pokeemmo/src/battle_util.c

#include "global.h"
#include "battle.h"
#include "battle_anim.h"
#include "battle_arena.h"
#include "battle_environment.h"
#include "battle_pyramid.h"
#include "battle_util.h"
#include "battle_controllers.h"
#include "battle_interface.h"
#include "battle_setup.h"
#include "battle_z_move.h"
#include "battle_gimmick.h"
#include "battle_hold_effects.h"
#include "generational_changes.h"
#include "party_menu.h"
#include "pokemon.h"
#include "international_string_util.h"
#include "item.h"
#include "util.h"
#include "battle_scripts.h"
#include "random.h"
#include "text.h"
#include "safari_zone.h"
#include "sound.h"
#include "sprite.h"
#include "string_util.h"
#include "task.h"
#include "test_runner.h"
#include "trig.h"
#include "trainer_slide.h"
#include "window.h"
#include "battle_message.h"
#include "battle_ai_main.h"
#include "battle_ai_util.h"
#include "event_data.h"
#include "link.h"
#include "malloc.h"
#include "berry.h"
#include "pokedex.h"
#include "mail.h"
#include "field_weather.h"
#include "constants/abilities.h"
#include "constants/battle_anim.h"
#include "constants/battle_move_effects.h"
#include "constants/battle_script_commands.h"
#include "constants/battle_string_ids.h"
#include "constants/items.h"
#include "constants/item_effects.h"
#include "constants/moves.h"
#include "constants/songs.h"
#include "constants/species.h"
#include "constants/trainers.h"
#include "constants/weather.h"
#include "constants/pokemon.h"

/*
NOTE: The data and functions in this file up until (but not including) sSoundMovesTable
are actually part of battle_main.c. They needed to be moved to this file in order to
match the ROM; this is also why sSoundMovesTable's declaration is in the middle of
functions instead of at the top of the file with the other declarations.
*/

static bool32 TryRemoveScreens(u32 battler);
static bool32 IsUnnerveAbilityOnOpposingSide(u32 battler);
static u32 GetFlingPowerFromItemId(u32 itemId);
static void SetRandomMultiHitCounter();
static bool32 IsNonVolatileStatusBlocked(u32 battlerDef, enum Ability abilityDef, enum Ability abilityAffected, const u8 *battleScript, enum FunctionCallOption option);
static bool32 CanSleepDueToSleepClause(u32 battlerAtk, u32 battlerDef, enum FunctionCallOption option);
static bool32 IsOpposingSideEmpty(u32 battler);
static bool32 CanBattlerFormChange(u32 battler, enum FormChanges method);

// Submoves
static u32 GetMirrorMoveMove(void);
static u32 GetMetronomeMove(void);
static u32 GetAssistMove(void);
static u32 GetSleepTalkMove(void);
static u32 GetCopyCatMove(void);
static u32 GetMeFirstMove(void);

ARM_FUNC NOINLINE static uq4_12_t PercentToUQ4_12(u32 percent);
ARM_FUNC NOINLINE static uq4_12_t PercentToUQ4_12_Floored(u32 percent);

extern const u8 *const gBattlescriptsForRunningByItem[];
extern const u8 *const gBattlescriptsForUsingItem[];
extern const u8 *const gBattlescriptsForSafariActions[];

static const u8 sPkblToEscapeFactor[][3] = {
    {
        [B_MSG_MON_CURIOUS]    = 0,
        [B_MSG_MON_ENTHRALLED] = 0,
        [B_MSG_MON_IGNORED]    = 0
    },{
        [B_MSG_MON_CURIOUS]    = 3,
        [B_MSG_MON_ENTHRALLED] = 5,
        [B_MSG_MON_IGNORED]    = 0
    },{
        [B_MSG_MON_CURIOUS]    = 2,
        [B_MSG_MON_ENTHRALLED] = 3,
        [B_MSG_MON_IGNORED]    = 0
    },{
        [B_MSG_MON_CURIOUS]    = 1,
        [B_MSG_MON_ENTHRALLED] = 2,
        [B_MSG_MON_IGNORED]    = 0
    },{
        [B_MSG_MON_CURIOUS]    = 1,
        [B_MSG_MON_ENTHRALLED] = 1,
        [B_MSG_MON_IGNORED]    = 0
    }
};
static const u8 sGoNearCounterToCatchFactor[] = {4, 3, 2, 1};
static const u8 sGoNearCounterToEscapeFactor[] = {4, 4, 4, 4};

struct BattleWeatherInfo
{
    u16 flag;
    u8 rock;
    u8 endMessage;
    u8 continuesMessage;
    u8 animation;
};

static const struct BattleWeatherInfo sBattleWeatherInfo[BATTLE_WEATHER_COUNT] =
{
    [BATTLE_WEATHER_RAIN] =
    {
        .flag = B_WEATHER_RAIN_NORMAL,
        .rock = HOLD_EFFECT_DAMP_ROCK,
        .endMessage = B_MSG_WEATHER_END_RAIN,
        .continuesMessage = B_MSG_WEATHER_TURN_RAIN,
        .animation = B_ANIM_RAIN_CONTINUES,
    },

    [BATTLE_WEATHER_RAIN_PRIMAL] =
    {
        .flag = B_WEATHER_RAIN_PRIMAL,
        .rock = HOLD_EFFECT_DAMP_ROCK,
        .endMessage = B_MSG_WEATHER_END_RAIN,
        .continuesMessage = B_MSG_WEATHER_TURN_RAIN,
        .animation = B_ANIM_RAIN_CONTINUES,
    },

    [BATTLE_WEATHER_RAIN_DOWNPOUR] =
    {
        .flag = B_WEATHER_RAIN_NORMAL,
        .rock = HOLD_EFFECT_DAMP_ROCK,
        .endMessage = B_MSG_WEATHER_END_RAIN,
        .continuesMessage = B_MSG_WEATHER_TURN_DOWNPOUR,
        .animation = B_ANIM_RAIN_CONTINUES,
    },

    [BATTLE_WEATHER_SUN] =
    {
        .flag = B_WEATHER_SUN_NORMAL,
        .rock = HOLD_EFFECT_HEAT_ROCK,
        .endMessage = B_MSG_WEATHER_END_SUN,
        .continuesMessage = B_MSG_WEATHER_TURN_SUN,
        .animation = B_ANIM_SUN_CONTINUES,
    },

    [BATTLE_WEATHER_SUN_PRIMAL] =
    {
        .flag = B_WEATHER_SUN_PRIMAL,
        .rock = HOLD_EFFECT_HEAT_ROCK,
        .endMessage = B_MSG_WEATHER_END_SUN,
        .continuesMessage = B_MSG_WEATHER_TURN_SUN,
        .animation = B_ANIM_SUN_CONTINUES,
    },

    [BATTLE_WEATHER_SANDSTORM] =
    {
        .flag = B_WEATHER_SANDSTORM,
        .rock = HOLD_EFFECT_SMOOTH_ROCK,
        .endMessage = B_MSG_WEATHER_END_SANDSTORM,
        .continuesMessage = B_MSG_WEATHER_TURN_SANDSTORM,
        .animation = B_ANIM_SANDSTORM_CONTINUES,
    },

    [BATTLE_WEATHER_HAIL] =
    {
        .flag = B_WEATHER_HAIL,
        .rock = HOLD_EFFECT_ICY_ROCK,
        .endMessage = B_MSG_WEATHER_END_HAIL,
        .continuesMessage = B_MSG_WEATHER_TURN_HAIL,
        .animation = B_ANIM_HAIL_CONTINUES,
    },

    [BATTLE_WEATHER_SNOW] =
    {
        .flag = B_WEATHER_SNOW,
        .rock = HOLD_EFFECT_ICY_ROCK,
        .endMessage = B_MSG_WEATHER_END_SNOW,
        .continuesMessage = B_MSG_WEATHER_TURN_SNOW,
        .animation = B_ANIM_SNOW_CONTINUES,
    },

    [BATTLE_WEATHER_FOG] =
    {
        .flag = B_WEATHER_FOG,
        .rock = HOLD_EFFECT_NONE,
        .endMessage = B_MSG_WEATHER_END_FOG,
        .continuesMessage = B_MSG_WEATHER_TURN_FOG,
        .animation = B_ANIM_FOG_CONTINUES,
    },

    [BATTLE_WEATHER_STRONG_WINDS] =
    {
        .flag = B_WEATHER_STRONG_WINDS,
        .rock = HOLD_EFFECT_NONE,
        .endMessage = B_MSG_WEATHER_END_STRONG_WINDS,
        .continuesMessage = B_MSG_WEATHER_TURN_STRONG_WINDS,
        .animation = B_ANIM_STRONG_WINDS,
    },
};

// Helper function for actual dmg calcs during battle. For simulated AI dmg, CalcTypeEffectivenessMultiplier should be used directly
// This should stay a static function. Ideally everything else is handled through CalcTypeEffectivenessMultiplier just like AI
static uq4_12_t CalcTypeEffectivenessMultiplierHelper(u32 move, enum Type moveType, u32 battlerAtk, u32 battlerDef, enum Ability abilityAtk, enum Ability abilityDef, bool32 recordAbilities)
{
    struct DamageContext ctx = {0};
    ctx.battlerAtk = battlerAtk;
    ctx.battlerDef = battlerDef;
    ctx.move = ctx.chosenMove = move;
    ctx.moveType = moveType;
    ctx.updateFlags = recordAbilities;
    ctx.abilityAtk = abilityAtk;
    ctx.abilityDef = abilityDef;
    ctx.holdEffectAtk = GetBattlerHoldEffect(battlerAtk);
    ctx.holdEffectDef = GetBattlerHoldEffect(battlerDef);

    return CalcTypeEffectivenessMultiplier(&ctx);
}

u32 GetCurrentBattleWeather(void)
{
    u32 currBattleWeather = 0xFF;

    for (u32 weather = 0; weather < ARRAY_COUNT(sBattleWeatherInfo); weather++)
    {
        if (gBattleWeather & sBattleWeatherInfo[weather].flag)
        {
            currBattleWeather = weather;
            break;
        }
    }

    return currBattleWeather;
}

bool32 EndOrContinueWeather(void)
{
    u32 currBattleWeather = GetCurrentBattleWeather();

    if (currBattleWeather == 0xFF)
        return FALSE;

    if (gWishFutureKnock.weatherDuration > 0 && --gWishFutureKnock.weatherDuration == 0)
    {
        gBattleWeather = B_WEATHER_NONE;
        for (u32 battler = 0; battler < gBattlersCount; battler++)
            gDisableStructs[battler].weatherAbilityDone = FALSE;
        gBattleCommunication[MULTISTRING_CHOOSER] = sBattleWeatherInfo[currBattleWeather].endMessage;
        BattleScriptExecute(BattleScript_WeatherFaded);
        return TRUE;
    }
    else
    {
        gBattleCommunication[MULTISTRING_CHOOSER] = sBattleWeatherInfo[currBattleWeather].continuesMessage;
        gBattleScripting.animArg1 = sBattleWeatherInfo[currBattleWeather].animation;
        BattleScriptExecute(BattleScript_WeatherContinues);
        return TRUE;
    }

    return FALSE;
}

static u32 CalcBeatUpPower(void)
{
    u32 species = gBattleStruct->beatUpSpecies[gBattleStruct->beatUpSlot++];
    return (GetSpeciesBaseAttack(species) / 10) + 5;
}

static bool32 ShouldTeraShellDistortTypeMatchups(u32 move, u32 battlerDef, enum Ability abilityDef)
{
    if (!gSpecialStatuses[battlerDef].distortedTypeMatchups
     && gBattleMons[battlerDef].species == SPECIES_TERAPAGOS_TERASTAL
     && gBattleMons[battlerDef].hp == gBattleMons[battlerDef].maxHP
     && !IsBattleMoveStatus(move)
     && abilityDef == ABILITY_TERA_SHELL)
        return TRUE;

    return FALSE;
}

static inline bool32 IsDragonDartsSecondHit(u32 effect)
{
    if (effect != EFFECT_DRAGON_DARTS)
        return FALSE;

    if (gMultiHitCounter == 1)
        return TRUE;

    return FALSE;
}

bool32 IsUnnerveBlocked(u32 battler, u32 itemId)
{
    if (GetItemPocket(itemId) != POCKET_BERRIES)
        return FALSE;

    if (gBattleScripting.overrideBerryRequirements > 0) // Berries that aren't eaten naturally ignore unnerve
        return FALSE;

    if (IsUnnerveAbilityOnOpposingSide(battler))
        return TRUE;

    return FALSE;
}

static bool32 IsUnnerveAbilityOnOpposingSide(u32 battler)
{
    for (u32 battlerDef = 0; battlerDef < gBattlersCount; battlerDef++)
    {
        if (battler == battlerDef || IsBattlerAlly(battler, battlerDef))
            continue;

        if (!IsBattlerAlive(battlerDef))
            continue;

        enum Ability ability = GetBattlerAbility(battlerDef);
        switch (ability)
        {
        case ABILITY_UNNERVE:
        case ABILITY_AS_ONE_ICE_RIDER:
        case ABILITY_AS_ONE_SHADOW_RIDER:
            return TRUE;
        default:
            break;
        }
    }

    return FALSE;
}

bool32 IsAffectedByFollowMe(u32 battlerAtk, u32 defSide, u32 move)
{
    enum Ability ability = GetBattlerAbility(battlerAtk);
    enum BattleMoveEffects effect = GetMoveEffect(move);

    if (gSideTimers[defSide].followmeTimer == 0
        || (!IsBattlerAlive(gSideTimers[defSide].followmeTarget) && !IsDragonDartsSecondHit(effect))
        || effect == EFFECT_SNIPE_SHOT
        || effect == EFFECT_SKY_DROP
        || IsAbilityAndRecord(battlerAtk, ability, ABILITY_PROPELLER_TAIL)
        || IsAbilityAndRecord(battlerAtk, ability, ABILITY_STALWART))
        return FALSE;

    if (effect == EFFECT_PURSUIT && IsPursuitTargetSet())
        return FALSE;

    if (gSideTimers[defSide].followmePowder && !IsAffectedByPowderMove(battlerAtk, ability, GetBattlerHoldEffect(battlerAtk)))
        return FALSE;

    return TRUE;
}

bool32 HandleMoveTargetRedirection(void)
{
    u32 redirectorOrderNum = MAX_BATTLERS_COUNT;
    u16 moveTarget = GetBattlerMoveTargetType(gBattlerAttacker, gCurrentMove);
    enum Type moveType = GetBattleMoveType(gCurrentMove);
    enum BattleMoveEffects moveEffect = GetMoveEffect(gCurrentMove);
    u32 side = BATTLE_OPPOSITE(GetBattlerSide(gBattlerAttacker));
    enum Ability ability = GetBattlerAbility(gBattleStruct->moveTarget[gBattlerAttacker]);

    if (IsAffectedByFollowMe(gBattlerAttacker, side, gCurrentMove)
     && moveTarget == MOVE_TARGET_SELECTED
     && !IsBattlerAlly(gBattlerAttacker, gSideTimers[side].followmeTarget))
    {
        gBattleStruct->moveTarget[gBattlerAttacker] = gBattlerTarget = gSideTimers[side].followmeTarget; // follow me moxie fix
        return TRUE;
    }
    else if (IsDoubleBattle()
           && gSideTimers[side].followmeTimer == 0
           && (!IsBattleMoveStatus(gCurrentMove) || (moveTarget != MOVE_TARGET_USER && moveTarget != MOVE_TARGET_ALL_BATTLERS))
           && ((ability != ABILITY_LIGHTNING_ROD && moveType == TYPE_ELECTRIC)
            || (ability != ABILITY_STORM_DRAIN && moveType == TYPE_WATER)))
    {
        // Find first battler that redirects the move (in turn order)
        enum Ability abilityAtk = GetBattlerAbility(gBattlerAttacker);
        u32 battler;
        for (battler = 0; battler < gBattlersCount; battler++)
        {
            ability = GetBattlerAbility(battler);
            if ((B_REDIRECT_ABILITY_ALLIES >= GEN_4 || !IsBattlerAlly(gBattlerAttacker, battler))
                && battler != gBattlerAttacker
                && gBattleStruct->moveTarget[gBattlerAttacker] != battler
                && ((ability == ABILITY_LIGHTNING_ROD && moveType == TYPE_ELECTRIC)
                 || (ability == ABILITY_STORM_DRAIN && moveType == TYPE_WATER))
                && GetBattlerTurnOrderNum(battler) < redirectorOrderNum
                && moveEffect != EFFECT_SNIPE_SHOT
                && moveEffect != EFFECT_PLEDGE
                && !IsAbilityAndRecord(gBattlerAttacker, abilityAtk, ABILITY_PROPELLER_TAIL)
                && !IsAbilityAndRecord(gBattlerAttacker, abilityAtk, ABILITY_STALWART))
            {
                redirectorOrderNum = GetBattlerTurnOrderNum(battler);
            }
        }
        if (redirectorOrderNum != MAX_BATTLERS_COUNT && gCurrentMove != MOVE_TEATIME)
        {
            enum Ability battlerAbility;
            battler = gBattlerByTurnOrder[redirectorOrderNum];
            battlerAbility = GetBattlerAbility(battler);
            RecordAbilityBattle(battler, battlerAbility);
            gSpecialStatuses[battler].abilityRedirected = TRUE;
            gBattlerTarget = battler;
            return TRUE;
        }
    }
    return FALSE;
}

// Functions
void HandleAction_UseMove(void)
{
    u32 i, moveTarget;

    gBattlerAttacker = gBattlerByTurnOrder[gCurrentTurnActionNumber];
    if (gAbsentBattlerFlags & 1u << gBattlerAttacker
     || gBattleStruct->battlerState[gBattlerAttacker].commandingDondozo
     || !IsBattlerAlive(gBattlerAttacker))
    {
        gCurrentActionFuncId = B_ACTION_FINISHED;
        return;
    }

    gBattleStruct->eventState.atkCanceler = 0;
    ClearDamageCalcResults();
    gMultiHitCounter = 0;
    gBattleScripting.savedDmg = 0;
    gBattleCommunication[MISS_TYPE] = 0;
    gCurrMovePos = gChosenMovePos = gBattleStruct->chosenMovePositions[gBattlerAttacker];

    // choose move
    if (gProtectStructs[gBattlerAttacker].noValidMoves)
    {
        gProtectStructs[gBattlerAttacker].noValidMoves = FALSE;
        gCurrentMove = gChosenMove = MOVE_STRUGGLE;
        gBattleStruct->moveTarget[gBattlerAttacker] = GetBattleMoveTarget(MOVE_STRUGGLE, NO_TARGET_OVERRIDE);
    }
    else if (gBattleMons[gBattlerAttacker].volatiles.multipleTurns || gDisableStructs[gBattlerAttacker].rechargeTimer > 0)
    {
        gCurrentMove = gChosenMove = gLockedMoves[gBattlerAttacker];
    }
    // encore forces you to use the same move
    else if (GetActiveGimmick(gBattlerAttacker) != GIMMICK_Z_MOVE && gDisableStructs[gBattlerAttacker].encoredMove != MOVE_NONE
             && gDisableStructs[gBattlerAttacker].encoredMove == gBattleMons[gBattlerAttacker].moves[gDisableStructs[gBattlerAttacker].encoredMovePos])
    {
        gCurrentMove = gChosenMove = gDisableStructs[gBattlerAttacker].encoredMove;
        gCurrMovePos = gChosenMovePos = gDisableStructs[gBattlerAttacker].encoredMovePos;
        if (GetGenConfig(GEN_CONFIG_ENCORE_TARGET) < GEN_5)
            gBattleStruct->moveTarget[gBattlerAttacker] = GetBattleMoveTarget(gCurrentMove, NO_TARGET_OVERRIDE);
    }
    // check if the encored move wasn't overwritten
    else if (GetActiveGimmick(gBattlerAttacker) != GIMMICK_Z_MOVE && gDisableStructs[gBattlerAttacker].encoredMove != MOVE_NONE
          && gDisableStructs[gBattlerAttacker].encoredMove != gBattleMons[gBattlerAttacker].moves[gDisableStructs[gBattlerAttacker].encoredMovePos])
    {
        gCurrMovePos = gChosenMovePos = gDisableStructs[gBattlerAttacker].encoredMovePos;
        gCurrentMove = gChosenMove = gBattleMons[gBattlerAttacker].moves[gCurrMovePos];
        gDisableStructs[gBattlerAttacker].encoredMove = MOVE_NONE;
        gDisableStructs[gBattlerAttacker].encoredMovePos = 0;
        gDisableStructs[gBattlerAttacker].encoreTimer = 0;
        gBattleStruct->moveTarget[gBattlerAttacker] = GetBattleMoveTarget(gCurrentMove, NO_TARGET_OVERRIDE);
    }
    else if (gBattleMons[gBattlerAttacker].moves[gCurrMovePos] != gChosenMoveByBattler[gBattlerAttacker])
    {
        gCurrentMove = gChosenMove = gBattleMons[gBattlerAttacker].moves[gCurrMovePos];
        gBattleStruct->moveTarget[gBattlerAttacker] = GetBattleMoveTarget(gCurrentMove, NO_TARGET_OVERRIDE);
    }
    else
    {
        gCurrentMove = gChosenMove = gBattleMons[gBattlerAttacker].moves[gCurrMovePos];
    }

    if (IsBattlerAlive(gBattlerAttacker))
    {
        if (IsOnPlayerSide(gBattlerAttacker))
            gBattleResults.lastUsedMovePlayer = gCurrentMove;
        else
            gBattleResults.lastUsedMoveOpponent = gCurrentMove;
    }

    // Set dynamic move type.
    SetTypeBeforeUsingMove(gChosenMove, gBattlerAttacker);

    // check Z-Move used
    if (GetActiveGimmick(gBattlerAttacker) == GIMMICK_Z_MOVE && !IsBattleMoveStatus(gCurrentMove) && !IsZMove(gCurrentMove))
    {
        gBattleStruct->categoryOverride = GetMoveCategory(gCurrentMove);
        gCurrentMove = gChosenMove = GetUsableZMove(gBattlerAttacker, gCurrentMove);
    }
    // check Max Move used
    else if (GetActiveGimmick(gBattlerAttacker) == GIMMICK_DYNAMAX)
    {
        gBattleStruct->categoryOverride = GetMoveCategory(gCurrentMove);
        gCurrentMove = gChosenMove = GetMaxMove(gBattlerAttacker, gCurrentMove);
    }

    moveTarget = GetBattlerMoveTargetType(gBattlerAttacker, gCurrentMove);

    if (!HandleMoveTargetRedirection())
    {
        if (IsDoubleBattle() && moveTarget & MOVE_TARGET_RANDOM)
        {
            gBattlerTarget = SetRandomTarget(gBattlerAttacker);
            if (gAbsentBattlerFlags & (1u << gBattlerTarget)
                && !IsBattlerAlly(gBattlerAttacker, gBattlerTarget))
            {
                gBattlerTarget = GetPartnerBattler(gBattlerTarget);
            }
        }
        else if (moveTarget == MOVE_TARGET_ALLY)
        {
            if (IsBattlerAlive(BATTLE_PARTNER(gBattlerAttacker)) && !gProtectStructs[BATTLE_PARTNER(gBattlerAttacker)].usedAllySwitch)
                gBattlerTarget = BATTLE_PARTNER(gBattlerAttacker);
            else
                gBattlerTarget = gBattlerAttacker;
        }
        else if (IsDoubleBattle() && moveTarget == MOVE_TARGET_FOES_AND_ALLY)
        {
            for (gBattlerTarget = 0; gBattlerTarget < gBattlersCount; gBattlerTarget++)
            {
                if (gBattlerTarget == gBattlerAttacker)
                    continue;
                if (IsBattlerAlive(gBattlerTarget))
                    break;
            }
        }
        else if (moveTarget == MOVE_TARGET_USER)
        {
            gBattlerTarget = gBattlerAttacker;
        }
        else
        {
            gBattlerTarget = gBattleStruct->moveTarget[gBattlerAttacker];
            if (!IsBattlerAlive(gBattlerTarget)
            && moveTarget != MOVE_TARGET_OPPONENTS_FIELD
            && IsDoubleBattle()
            && (!IsBattlerAlly(gBattlerAttacker, gBattlerTarget)))
            {
                gBattlerTarget = GetBattlerAtPosition(BATTLE_PARTNER(GetBattlerPosition(gBattlerTarget)));
            }
        }
    }

    if (gBattleTypeFlags & BATTLE_TYPE_PALACE && gProtectStructs[gBattlerAttacker].palaceUnableToUseMove)
    {
        // Battle Palace, select battle script for failure to use move
        if (!IsBattlerAlive(gBattlerAttacker))
        {
            gCurrentActionFuncId = B_ACTION_FINISHED;
            return;
        }
        else if (gPalaceSelectionBattleScripts[gBattlerAttacker] != NULL)
        {
            gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_INCAPABLE_OF_POWER;
            gBattlescriptCurrInstr = gPalaceSelectionBattleScripts[gBattlerAttacker];
            gPalaceSelectionBattleScripts[gBattlerAttacker] = NULL;
        }
        else
        {
            gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_INCAPABLE_OF_POWER;
            gBattlescriptCurrInstr = BattleScript_MoveUsedLoafingAround;
        }
    }
    else if (IsBattlerAlly(gBattlerAttacker, gBattlerTarget) && !IsBattlerAlive(gBattlerTarget))
    {
        gBattlescriptCurrInstr = BattleScript_FailedFromAtkCanceler;
    }
    // If originally targetting an ally but now targetting user due to Ally Switch
    else if (moveTarget & MOVE_TARGET_ALLY && gBattlerAttacker == gBattlerTarget
          && gProtectStructs[BATTLE_PARTNER(gBattlerAttacker)].usedAllySwitch)
    {
        gBattlescriptCurrInstr = BattleScript_FailedFromAtkCanceler;
    }
    else
    {
        gBattlescriptCurrInstr = GetMoveBattleScript(gCurrentMove);
    }

    if (gBattleTypeFlags & BATTLE_TYPE_ARENA)
        BattleArena_AddMindPoints(gBattlerAttacker);

    for (i = 0; i < MAX_BATTLERS_COUNT; i++)
        gBattleStruct->battlerState[i].wasAboveHalfHp = gBattleMons[i].hp > gBattleMons[i].maxHP / 2;

    gCurrentActionFuncId = B_ACTION_EXEC_SCRIPT;
}

void HandleAction_Switch(void)
{
    gBattlerAttacker = gBattlerByTurnOrder[gCurrentTurnActionNumber];

    // if switching to a mon that is already on field, cancel switch
    if (!(gAbsentBattlerFlags & (1u << BATTLE_PARTNER(gBattlerAttacker)))
     && IsBattlerAlive(BATTLE_PARTNER(gBattlerAttacker))
     && gBattlerPartyIndexes[BATTLE_PARTNER(gBattlerAttacker)] == gBattleStruct->monToSwitchIntoId[gBattlerAttacker])
    {
        gCurrentActionFuncId = B_ACTION_FINISHED;
        return;
    }

    gBattle_BG0_X = 0;
    gBattle_BG0_Y = 0;
    gActionSelectionCursor[gBattlerAttacker] = 0;
    gMoveSelectionCursor[gBattlerAttacker] = 0;

    PREPARE_MON_NICK_BUFFER(gBattleTextBuff1, gBattlerAttacker, gBattleStruct->battlerPartyIndexes[gBattlerAttacker]);

    gBattleScripting.battler = gBattlerAttacker;
    gBattlescriptCurrInstr = BattleScript_ActionSwitch;
    gCurrentActionFuncId = B_ACTION_EXEC_SCRIPT;

    if (gBattleResults.playerSwitchesCounter < 255)
        gBattleResults.playerSwitchesCounter++;

    TryBattleFormChange(gBattlerAttacker, FORM_CHANGE_BATTLE_SWITCH);
}

void HandleAction_UseItem(void)
{
    gBattlerAttacker = gBattlerByTurnOrder[gCurrentTurnActionNumber];
    gBattle_BG0_X = 0;
    gBattle_BG0_Y = 0;
    ClearVariousBattlerFlags(gBattlerAttacker);

    gLastUsedItem = gBattleResources->bufferB[gBattlerAttacker][1] | (gBattleResources->bufferB[gBattlerAttacker][2] << 8);
    if (X_ITEM_FRIENDSHIP_INCREASE > 0
        && GetItemEffectType(gLastUsedItem) == ITEM_EFFECT_X_ITEM
        && !ShouldSkipFriendshipChange())
        UpdateFriendshipFromXItem(gBattlerAttacker);

    gBattlescriptCurrInstr = gBattlescriptsForUsingItem[GetItemBattleUsage(gLastUsedItem) - 1];
    gCurrentActionFuncId = B_ACTION_EXEC_SCRIPT;
}

bool32 TryRunFromBattle(u32 battler)
{
    bool32 effect = FALSE;
    u8 holdEffect;
    u8 pyramidMultiplier;
    u8 speedVar;

    // If this flag is set, running will never be successful under any circumstances.
    if (FlagGet(B_FLAG_NO_RUNNING))
        return effect;

    if (gBattleMons[battler].item == ITEM_ENIGMA_BERRY_E_READER)
        holdEffect = gEnigmaBerries[battler].holdEffect;
    else
        holdEffect = GetItemHoldEffect(gBattleMons[battler].item);

    gPotentialItemEffectBattler = battler;

    if (holdEffect == HOLD_EFFECT_CAN_ALWAYS_RUN)
    {
        gLastUsedItem = gBattleMons[battler].item;
        gProtectStructs[battler].fleeType = FLEE_ITEM;
        effect++;
    }
    else if (B_GHOSTS_ESCAPE >= GEN_6 && IS_BATTLER_OF_TYPE(battler, TYPE_GHOST))
    {
        effect++;
    }
    else if (GetBattlerAbility(battler) == ABILITY_RUN_AWAY)
    {
        if (CurrentBattlePyramidLocation() != PYRAMID_LOCATION_NONE)
        {
            gBattleStruct->runTries++;
            pyramidMultiplier = GetPyramidRunMultiplier();
            speedVar = (gBattleMons[battler].speed * pyramidMultiplier) / (gBattleMons[BATTLE_OPPOSITE(battler)].speed) + (gBattleStruct->runTries * 30);
            if (speedVar > (Random() & 0xFF))
            {
                gLastUsedAbility = ABILITY_RUN_AWAY;
                gProtectStructs[battler].fleeType = FLEE_ABILITY;
                effect++;
            }
        }
        else
        {
            gLastUsedAbility = ABILITY_RUN_AWAY;
            gProtectStructs[battler].fleeType = FLEE_ABILITY;
            effect++;
        }
    }
    else if (gBattleTypeFlags & (BATTLE_TYPE_FRONTIER | BATTLE_TYPE_TRAINER_HILL) && gBattleTypeFlags & BATTLE_TYPE_TRAINER)
    {
        effect++;
    }
    else if (CanPlayerForfeitNormalTrainerBattle())
    {
        effect++;
    }
    else
    {
        u8 runningFromBattler = BATTLE_OPPOSITE(battler);
        if (!IsBattlerAlive(runningFromBattler))
            runningFromBattler |= BIT_FLANK;

        if (CurrentBattlePyramidLocation() != PYRAMID_LOCATION_NONE)
        {
            pyramidMultiplier = GetPyramidRunMultiplier();
            speedVar = (gBattleMons[battler].speed * pyramidMultiplier) / (gBattleMons[runningFromBattler].speed) + (gBattleStruct->runTries * 30);
            if (speedVar > (Random() & 0xFF))
                effect++;
        }
        else if (gBattleMons[battler].speed < gBattleMons[runningFromBattler].speed)
        {
            speedVar = (gBattleMons[battler].speed * 128) / (gBattleMons[runningFromBattler].speed) + (gBattleStruct->runTries * 30);
            if (speedVar > (Random() & 0xFF))
                effect++;
        }
        else // same speed or faster
        {
            effect++;
        }

        gBattleStruct->runTries++;
    }

    if (effect != 0)
    {
        gCurrentTurnActionNumber = gBattlersCount;
        gBattleOutcome = B_OUTCOME_RAN;
    }

    return effect;
}

void HandleAction_Run(void)
{
    s32 i;

    gBattlerAttacker = gBattlerByTurnOrder[gCurrentTurnActionNumber];
    if (gBattleTypeFlags & (BATTLE_TYPE_LINK | BATTLE_TYPE_RECORDED_LINK))
    {
        gCurrentTurnActionNumber = gBattlersCount;

        for (i = 0; i < gBattlersCount; i++)
        {
            if (IsOnPlayerSide(i))
            {
                if (gChosenActionByBattler[i] == B_ACTION_RUN)
                    gBattleOutcome |= B_OUTCOME_LOST;
            }
            else
            {
                if (gChosenActionByBattler[i] == B_ACTION_RUN)
                    gBattleOutcome |= B_OUTCOME_WON;
            }
        }

        gBattleOutcome |= B_OUTCOME_LINK_BATTLE_RAN;
        gSaveBlock2Ptr->frontier.disableRecordBattle = TRUE;
    }
    else
    {
        if (IsOnPlayerSide(gBattlerAttacker))
        {
            if (!TryRunFromBattle(gBattlerAttacker)) // failed to run away
            {
                ClearVariousBattlerFlags(gBattlerAttacker);
                gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_CANT_ESCAPE_2;
                gBattlescriptCurrInstr = BattleScript_PrintFailedToRunString;
                gCurrentActionFuncId = B_ACTION_EXEC_SCRIPT;
            }
        }
        else
        {
            if (GetBattlerHoldEffect(gBattlerAttacker) != HOLD_EFFECT_CAN_ALWAYS_RUN
             && GetBattlerAbility(gBattlerAttacker) != ABILITY_RUN_AWAY
             && !CanBattlerEscape(gBattlerAttacker))
            {
                gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_ATTACKER_CANT_ESCAPE;
                gBattlescriptCurrInstr = BattleScript_PrintFailedToRunString;
                gCurrentActionFuncId = B_ACTION_EXEC_SCRIPT;
            }
            else
            {
                gCurrentTurnActionNumber = gBattlersCount;
                gBattleOutcome = B_OUTCOME_MON_FLED;
            }
        }
    }
}

void HandleAction_WatchesCarefully(void)
{
    gBattlerAttacker = gBattlerByTurnOrder[gCurrentTurnActionNumber];
    gBattle_BG0_X = 0;
    gBattle_BG0_Y = 0;
    gBattlescriptCurrInstr = gBattlescriptsForSafariActions[0];
    gCurrentActionFuncId = B_ACTION_EXEC_SCRIPT;
}

void HandleAction_SafariZoneBallThrow(void)
{
    gBattlerAttacker = gBattlerByTurnOrder[gCurrentTurnActionNumber];
    gBattle_BG0_X = 0;
    gBattle_BG0_Y = 0;
    gNumSafariBalls--;
    gLastUsedItem = ITEM_SAFARI_BALL;
    gBattlescriptCurrInstr = BattleScript_SafariBallThrow;
    gCurrentActionFuncId = B_ACTION_EXEC_SCRIPT;
}

void HandleAction_ThrowBall(void)
{
    gBattlerAttacker = gBattlerByTurnOrder[gCurrentTurnActionNumber];
    gBattle_BG0_X = 0;
    gBattle_BG0_Y = 0;
    gLastUsedItem = gBallToDisplay;
    if (!GetItemImportance(gLastUsedItem))
    	RemoveBagItem(gLastUsedItem, 1);
    gBattlescriptCurrInstr = BattleScript_BallThrow;
    gCurrentActionFuncId = B_ACTION_EXEC_SCRIPT;
}

void HandleAction_ThrowPokeblock(void)
{
    gBattlerAttacker = gBattlerByTurnOrder[gCurrentTurnActionNumber];
    gBattle_BG0_X = 0;
    gBattle_BG0_Y = 0;
    gBattleCommunication[MULTISTRING_CHOOSER] = gBattleResources->bufferB[gBattlerAttacker][1] - 1;
    gLastUsedItem = gBattleResources->bufferB[gBattlerAttacker][2];

    if (gBattleResults.pokeblockThrows < 255)
        gBattleResults.pokeblockThrows++;
    if (gBattleStruct->safariPkblThrowCounter < 3)
        gBattleStruct->safariPkblThrowCounter++;
    if (gBattleStruct->safariEscapeFactor > 1)
    {
        // BUG: safariEscapeFactor can become 0 below. This causes the pokeblock throw glitch.
        #ifdef BUGFIX
        if (gBattleStruct->safariEscapeFactor <= sPkblToEscapeFactor[gBattleStruct->safariPkblThrowCounter][gBattleCommunication[MULTISTRING_CHOOSER]])
        #else
        if (gBattleStruct->safariEscapeFactor < sPkblToEscapeFactor[gBattleStruct->safariPkblThrowCounter][gBattleCommunication[MULTISTRING_CHOOSER]])
        #endif
            gBattleStruct->safariEscapeFactor = 1;
        else
            gBattleStruct->safariEscapeFactor -= sPkblToEscapeFactor[gBattleStruct->safariPkblThrowCounter][gBattleCommunication[MULTISTRING_CHOOSER]];
    }

    gBattlescriptCurrInstr = gBattlescriptsForSafariActions[2];
    gCurrentActionFuncId = B_ACTION_EXEC_SCRIPT;
}

void HandleAction_GoNear(void)
{
    gBattlerAttacker = gBattlerByTurnOrder[gCurrentTurnActionNumber];
    gBattle_BG0_X = 0;
    gBattle_BG0_Y = 0;

    gBattleStruct->safariCatchFactor += sGoNearCounterToCatchFactor[gBattleStruct->safariGoNearCounter];
    if (gBattleStruct->safariCatchFactor > 20)
        gBattleStruct->safariCatchFactor = 20;

    gBattleStruct->safariEscapeFactor += sGoNearCounterToEscapeFactor[gBattleStruct->safariGoNearCounter];
    if (gBattleStruct->safariEscapeFactor > 20)
        gBattleStruct->safariEscapeFactor = 20;

    if (gBattleStruct->safariGoNearCounter < 3)
    {
        gBattleStruct->safariGoNearCounter++;
        gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_CREPT_CLOSER;
    }
    else
    {
        gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_CANT_GET_CLOSER;
    }
    gBattlescriptCurrInstr = gBattlescriptsForSafariActions[1];
    gCurrentActionFuncId = B_ACTION_EXEC_SCRIPT;
}

void HandleAction_SafariZoneRun(void)
{
    gBattlerAttacker = gBattlerByTurnOrder[gCurrentTurnActionNumber];
    PlaySE(SE_FLEE);
    gCurrentTurnActionNumber = gBattlersCount;
    gBattleOutcome = B_OUTCOME_RAN;
}

void HandleAction_WallyBallThrow(void)
{
    gBattlerAttacker = gBattlerByTurnOrder[gCurrentTurnActionNumber];
    gBattle_BG0_X = 0;
    gBattle_BG0_Y = 0;

    PREPARE_MON_NICK_BUFFER(gBattleTextBuff1, gBattlerAttacker, gBattlerPartyIndexes[gBattlerAttacker])

    gBattlescriptCurrInstr = gBattlescriptsForSafariActions[3];
    gCurrentActionFuncId = B_ACTION_EXEC_SCRIPT;
    gActionsByTurnOrder[1] = B_ACTION_FINISHED;
}

void HandleAction_TryFinish(void)
{
    if (!HandleFaintedMonActions())
    {
        gBattleStruct->eventState.faintedAction = 0;
        gCurrentActionFuncId = B_ACTION_FINISHED;
    }
}

void HandleAction_NothingIsFainted(void)
{
    gCurrentTurnActionNumber++;
    gCurrentActionFuncId = gActionsByTurnOrder[gCurrentTurnActionNumber];
    gBattleStruct->synchronizeMoveEffect = MOVE_EFFECT_NONE;
    gHitMarker &= ~(HITMARKER_OBEYS);
}

void HandleAction_ActionFinished(void)
{
    u32 i, j;
    bool32 afterYouActive = gSpecialStatuses[gBattlerByTurnOrder[gCurrentTurnActionNumber + 1]].afterYou;
    gBattleStruct->monToSwitchIntoId[gBattlerByTurnOrder[gCurrentTurnActionNumber]] = gSelectedMonPartyId = PARTY_SIZE;
    gCurrentTurnActionNumber++;
    gCurrentActionFuncId = gActionsByTurnOrder[gCurrentTurnActionNumber];
    memset(&gSpecialStatuses, 0, sizeof(gSpecialStatuses));
    gHitMarker &= ~(HITMARKER_OBEYS);

    ClearDamageCalcResults();
    gCurrentMove = 0;
    gBattleScripting.animTurn = 0;
    gBattleScripting.animTargetsHit = 0;
    gBattleStruct->dynamicMoveType = 0;
    gBattleStruct->bouncedMoveIsUsed = FALSE;
    gBattleStruct->snatchedMoveIsUsed = FALSE;
    gBattleScripting.moveendState = 0;
    gBattleCommunication[3] = 0;
    gBattleCommunication[4] = 0;
    gBattleResources->battleScriptsStack->size = 0;
    gBattleStruct->synchronizeMoveEffect = MOVE_EFFECT_NONE;

    if (GetGenConfig(GEN_CONFIG_RECALC_TURN_AFTER_ACTIONS) >= GEN_8 && !afterYouActive && !gBattleStruct->pledgeMove && !IsPursuitTargetSet())
    {
        // i starts at `gCurrentTurnActionNumber` because we don't want to recalculate turn order for mon that have already
        // taken action. It's been previously increased, which we want in order to not recalculate the turn of the mon that just finished its action

        struct BattleContext ctx = {0};
        for (i = 0; i < gBattlersCount; i++)
        {
            ctx.abilities[i] = GetBattlerAbility(i);
            ctx.holdEffects[i] = GetBattlerHoldEffect(i);
        }
        for (i = gCurrentTurnActionNumber; i < gBattlersCount - 1; i++)
        {
            for (j = i + 1; j < gBattlersCount; j++)
            {
                ctx.battlerAtk = gBattlerByTurnOrder[i];
                ctx.battlerDef = gBattlerByTurnOrder[j];

                if (gProtectStructs[ctx.battlerAtk].quash || gProtectStructs[ctx.battlerDef].quash
                    || gProtectStructs[ctx.battlerAtk].shellTrap || gProtectStructs[ctx.battlerDef].shellTrap)
                    continue;

                // We recalculate order only for action of the same priority. If any action other than switch/move has been taken, they should
                // have been executed before. The only recalculation needed is for moves/switch. Mega evolution is handled in src/battle_main.c/TryChangeOrder
                if ((gActionsByTurnOrder[i] == B_ACTION_USE_MOVE && gActionsByTurnOrder[j] == B_ACTION_USE_MOVE))
                {
                    if (GetWhichBattlerFaster(&ctx, FALSE) == -1)
                        SwapTurnOrder(i, j);
                }
                else if ((gActionsByTurnOrder[i] == B_ACTION_SWITCH && gActionsByTurnOrder[j] == B_ACTION_SWITCH))
                {
                    if (GetWhichBattlerFaster(&ctx, TRUE) == -1) // If the actions chosen are switching, we recalc order but ignoring the moves
                        SwapTurnOrder(i, j);
                }
            }
        }
    }
}

// code

ARM_FUNC NOINLINE static uq4_12_t PercentToUQ4_12(u32 percent)
{
    return (4096 * percent + 50) / 100;
}

ARM_FUNC NOINLINE static uq4_12_t PercentToUQ4_12_Floored(u32 percent)
{
    return (4096 * percent) / 100;
}

u8 GetBattlerForBattleScript(u8 caseId)
{
    u8 ret = 0;
    switch (caseId)
    {
    case BS_TARGET:
        ret = gBattlerTarget;
        break;
    case BS_ATTACKER:
        ret = gBattlerAttacker;
        break;
    case BS_ATTACKER_PARTNER:
        ret = BATTLE_PARTNER(gBattlerAttacker);
        break;
    case BS_EFFECT_BATTLER:
        ret = gEffectBattler;
        break;
    case BS_BATTLER_0:
        ret = 0;
        break;
    case BS_SCRIPTING:
        ret = gBattleScripting.battler;
        break;
    case BS_FAINTED:
        ret = gBattlerFainted;
        break;
    case BS_FAINTED_MULTIPLE_1:
        ret = gBattlerFainted;
        break;
    case BS_ATTACKER_WITH_PARTNER:
    case BS_FAINTED_MULTIPLE_2:
    case BS_ATTACKER_SIDE:
    case BS_TARGET_SIDE:
    case BS_PLAYER1:
        ret = GetBattlerAtPosition(B_POSITION_PLAYER_LEFT);
        break;
    case BS_OPPONENT1:
        ret = GetBattlerAtPosition(B_POSITION_OPPONENT_LEFT);
        break;
    case BS_PLAYER2:
        ret = GetBattlerAtPosition(B_POSITION_PLAYER_RIGHT);
        break;
    case BS_OPPONENT2:
        ret = GetBattlerAtPosition(B_POSITION_OPPONENT_RIGHT);
        break;
    case BS_ABILITY_BATTLER:
        ret = gBattlerAbility;
        break;
    }
    return ret;
}

static void UNUSED MarkAllBattlersForControllerExec(void)
{
    int i;

    if (gBattleTypeFlags & BATTLE_TYPE_LINK)
    {
        for (i = 0; i < gBattlersCount; i++)
            MarkBattleControllerMessageOutboundOverLink(i);
    }
    else
    {
        for (i = 0; i < gBattlersCount; i++)
            MarkBattleControllerActiveOnLocal(i);
    }
}

bool32 IsBattlerMarkedForControllerExec(u32 battler)
{
    if (gBattleTypeFlags & BATTLE_TYPE_LINK)
        return IsBattleControllerMessageSynchronizedOverLink(battler);
    else
        return IsBattleControllerActiveOnLocal(battler);
}

void MarkBattlerForControllerExec(u32 battler)
{
    if (gBattleTypeFlags & BATTLE_TYPE_LINK)
        MarkBattleControllerMessageOutboundOverLink(battler);
    else
        MarkBattleControllerActiveOnLocal(battler);
}

void MarkBattlerReceivedLinkData(u32 battler)
{
    s32 i;

    for (i = 0; i < GetLinkPlayerCount(); i++)
        MarkBattleControllerActiveForPlayer(battler, i);

    MarkBattleControllerMessageSynchronizedOverLink(battler);
}

const u8 *CheckSkyDropState(u32 battler, enum SkyDropState skyDropState)
{
    const u8 *result = NULL;

    u8 otherSkyDropper = gBattleStruct->skyDropTargets[battler];
    gBattleMons[battler].volatiles.semiInvulnerable = STATE_NONE;

    // Makes both attacker and target's sprites visible
    gSprites[gBattlerSpriteIds[battler]].invisible = FALSE;
    gSprites[gBattlerSpriteIds[otherSkyDropper]].invisible = FALSE;

    // If target was sky dropped in the middle of Outrage/Thrash/Petal Dance,
    // confuse them upon release and display "confused by fatigue" message & animation.
    // Don't do this if this CancelMultiTurnMoves is caused by falling asleep via Yawn.
    if (gBattleMons[otherSkyDropper].volatiles.lockConfusionTurns && skyDropState != SKY_DROP_STATUS_YAWN)
    {
        gBattleMons[otherSkyDropper].volatiles.lockConfusionTurns = 0;

        // If the target can be confused, confuse them.
        // Don't use CanBeConfused, can cause issues in edge cases.
        enum Ability ability = GetBattlerAbility(otherSkyDropper);
        if (!(gBattleMons[otherSkyDropper].volatiles.confusionTurns > 0
            || IsAbilityAndRecord(otherSkyDropper, ability, ABILITY_OWN_TEMPO)
            || IsBattlerTerrainAffected(otherSkyDropper, ability, GetBattlerHoldEffect(otherSkyDropper), STATUS_FIELD_MISTY_TERRAIN)))
        {
            // Set confused status
            gBattleMons[otherSkyDropper].volatiles.confusionTurns = ((Random()) % 4) + 2;

            if (skyDropState == SKY_DROP_ATTACKCANCELER_CHECK)
            {
                gBattleStruct->skyDropTargets[battler] = SKY_DROP_RELEASED_TARGET;
            }
            else if (skyDropState == SKY_DROP_GRAVITY_ON_AIRBORNE)
            {
                // Reapplying STATE_SKY_DROPPED allows for avoiding unecessary messages when Gravity is applied to the target.
                gBattleStruct->skyDropTargets[battler] = SKY_DROP_RELEASED_TARGET;
                gBattleMons[otherSkyDropper].volatiles.semiInvulnerable = STATE_SKY_DROP;
            }
            else if (skyDropState == SKY_DROP_CANCEL_MULTI_TURN_MOVES)
            {
                gBattlerAttacker = otherSkyDropper;
                result = BattleScript_ThrashConfuses;
            }
            else if (skyDropState == SKY_DROP_STATUS_FREEZE_SLEEP)
            {
                gBattlerAttacker = otherSkyDropper;
                BattleScriptPush(gBattlescriptCurrInstr + 1);
                result = BattleScript_ThrashConfuses;
            }
        }
    }

    // Clear skyDropTargets data, unless this CancelMultiTurnMoves is caused by Yawn, attackcanceler, or VARIOUS_GRAVITY_ON_AIRBORNE_MONS
    if (!(gBattleMons[otherSkyDropper].volatiles.lockConfusionTurns) && gBattleStruct->skyDropTargets[battler] < 4)
    {
        gBattleStruct->skyDropTargets[battler] = SKY_DROP_NO_TARGET;
        gBattleStruct->skyDropTargets[otherSkyDropper] = SKY_DROP_NO_TARGET;
    }

    return result;
}

const u8 *CancelMultiTurnMoves(u32 battler, enum SkyDropState skyDropState)
{
    const u8 *result = NULL;
    gBattleMons[battler].volatiles.uproarTurns = 0;
    gBattleMons[battler].volatiles.bideTurns = 0;

    if (B_RAMPAGE_CANCELLING < GEN_5)
    {
        gBattleMons[battler].volatiles.multipleTurns = 0;
        gBattleMons[battler].volatiles.lockConfusionTurns = 0;
    }
    else if (!gBattleMons[battler].volatiles.lockConfusionTurns
     || gBattleMons[battler].volatiles.lockConfusionTurns > 1)
    {
        gBattleMons[battler].volatiles.multipleTurns = 0;
    }

    // Clear battler's semi-invulnerable bits if they are not held by Sky Drop.
    if (gBattleMons[battler].volatiles.semiInvulnerable != STATE_SKY_DROP)
        gBattleMons[battler].volatiles.semiInvulnerable = STATE_NONE;

    if (gBattleStruct->skyDropTargets[battler] != SKY_DROP_NO_TARGET && gBattleMons[battler].volatiles.semiInvulnerable != STATE_SKY_DROP)
        result = CheckSkyDropState(battler, skyDropState);

    gDisableStructs[battler].rolloutTimer = 0;
    gDisableStructs[battler].furyCutterCounter = 0;

    return result;
}

bool32 WasUnableToUseMove(u32 battler)
{
    if (gProtectStructs[battler].nonVolatileStatusImmobility
     || gProtectStructs[battler].unableToUseMove
     || gProtectStructs[battler].confusionSelfDmg)
        return TRUE;
    return FALSE;
}

bool32 ShouldDefiantCompetitiveActivate(u32 battler, enum Ability ability)
{
    u32 side = GetBattlerSide(battler);
    if (ability != ABILITY_DEFIANT && ability != ABILITY_COMPETITIVE)
        return FALSE;
    // if an ally dropped the stats (except for Sticky Web), don't activate
    if (IsBattlerAlly(gSpecialStatuses[battler].changedStatsBattlerId, battler) && !gBattleScripting.stickyWebStatDrop)
        return FALSE;

    if (GetGenConfig(GEN_CONFIG_DEFIANT_STICKY_WEB) >= GEN_9 || !gBattleScripting.stickyWebStatDrop)
        return TRUE;
    // only activate Defiant/Competitive if Web was setup by foe
    return gSideTimers[side].stickyWebBattlerSide != side;
}

void PrepareStringBattle(enum StringID stringId, u32 battler)
{
    u16 battlerAbility = GetBattlerAbility(battler);
    u16 targetAbility = GetBattlerAbility(gBattlerTarget);
    // Support for Contrary ability.
    // If a move attempted to raise stat - print "won't increase".
    // If a move attempted to lower stat - print "won't decrease".
    switch (stringId)
    {
    case STRINGID_ATTACKERSSTATROSE:
    case STRINGID_DEFENDERSSTATROSE:
    case STRINGID_STATSWONTINCREASE:
    case STRINGID_USINGITEMSTATOFPKMNROSE:
        if (gBattleScripting.statChanger & STAT_BUFF_NEGATIVE)
            stringId = gStatDownStringIds[gBattleCommunication[MULTISTRING_CHOOSER]];
        break;
    case STRINGID_ATTACKERSSTATFELL:
    case STRINGID_DEFENDERSSTATFELL:
    case STRINGID_STATSWONTDECREASE:
    case STRINGID_USINGITEMSTATOFPKMNFELL:
        if (!(gBattleScripting.statChanger & STAT_BUFF_NEGATIVE))
            stringId = gStatUpStringIds[gBattleCommunication[MULTISTRING_CHOOSER]];
        break;
    case STRINGID_STATSWONTINCREASE2:
        if (battlerAbility == ABILITY_CONTRARY)
            stringId = STRINGID_STATSWONTDECREASE2;
        break;
    case STRINGID_STATSWONTDECREASE2:
        if (battlerAbility == ABILITY_CONTRARY)
            stringId = STRINGID_STATSWONTINCREASE2;
        break;
    case STRINGID_PKMNCUTSATTACKWITH:
        if (GetGenConfig(GEN_CONFIG_UPDATED_INTIMIDATE) >= GEN_8
         && targetAbility == ABILITY_RATTLED
         && CompareStat(gBattlerTarget, STAT_SPEED, MAX_STAT_STAGE, CMP_LESS_THAN, targetAbility))
        {
            gBattlerAbility = gBattlerTarget;
            BattleScriptCall(BattleScript_AbilityRaisesDefenderStat);
            SET_STATCHANGER(STAT_SPEED, 1, FALSE);
        }
        else if (targetAbility == ABILITY_CONTRARY)
        {
            stringId = STRINGID_DEFENDERSSTATROSE;
        }
        break;
    case STRINGID_ITDOESNTAFFECT:
    case STRINGID_PKMNUNAFFECTED:
        TryInitializeTrainerSlideEnemyMonUnaffected(gBattlerTarget);
        break;
    default:
        break;
    }

    if ((stringId == STRINGID_PKMNCUTSATTACKWITH || stringId == STRINGID_DEFENDERSSTATFELL)
     && ShouldDefiantCompetitiveActivate(gBattlerTarget, targetAbility))
    {
        gBattlerAbility = gBattlerTarget;
        BattleScriptCall(BattleScript_AbilityRaisesDefenderStat);
        if (targetAbility == ABILITY_DEFIANT)
            SET_STATCHANGER(STAT_ATK, 2, FALSE);
        else
            SET_STATCHANGER(STAT_SPATK, 2, FALSE);
    }

    BtlController_EmitPrintString(battler, B_COMM_TO_CONTROLLER, stringId);
    MarkBattlerForControllerExec(battler);
}

void ResetSentPokesToOpponentValue(void)
{
    s32 i;
    u32 bits = 0;

    gSentPokesToOpponent[0] = 0;
    gSentPokesToOpponent[1] = 0;

    for (i = 0; i < gBattlersCount; i += 2)
        bits |= 1u << gBattlerPartyIndexes[i];

    for (i = 1; i < gBattlersCount; i += 2)
        gSentPokesToOpponent[(i & BIT_FLANK) >> 1] = bits;
}

void OpponentSwitchInResetSentPokesToOpponentValue(u32 battler)
{
    s32 i = 0;
    u32 bits = 0;

    if (!IsOnPlayerSide(battler))
    {
        u8 flank = ((battler & BIT_FLANK) >> 1);
        gSentPokesToOpponent[flank] = 0;

        for (i = 0; i < gBattlersCount; i += 2)
        {
            if (!(gAbsentBattlerFlags & (1u << i)))
                bits |= 1u << gBattlerPartyIndexes[i];
        }
        gSentPokesToOpponent[flank] = bits;
    }
}

void UpdateSentPokesToOpponentValue(u32 battler)
{
    if (!IsOnPlayerSide(battler))
    {
        OpponentSwitchInResetSentPokesToOpponentValue(battler);
    }
    else
    {
        s32 i;
        for (i = 1; i < gBattlersCount; i++)
            gSentPokesToOpponent[(i & BIT_FLANK) >> 1] |= 1u << gBattlerPartyIndexes[battler];
    }
}

void BattleScriptPush(const u8 *bsPtr)
{
    gBattleResources->battleScriptsStack->ptr[gBattleResources->battleScriptsStack->size++] = bsPtr;
}

void BattleScriptPushCursor(void)
{
    gBattleResources->battleScriptsStack->ptr[gBattleResources->battleScriptsStack->size++] = gBattlescriptCurrInstr;
}

void BattleScriptCall(const u8 *bsPtr)
{
    BattleScriptPushCursor();
    gBattlescriptCurrInstr = bsPtr;
}

void BattleScriptPop(void)
{
    if (gBattleResources->battleScriptsStack->size != 0)
        gBattlescriptCurrInstr = gBattleResources->battleScriptsStack->ptr[--gBattleResources->battleScriptsStack->size];
}

static bool32 IsGravityPreventingMove(u32 move)
{
    if (!(gFieldStatuses & STATUS_FIELD_GRAVITY))
        return FALSE;

    return IsMoveGravityBanned(move);
}

bool32 IsHealBlockPreventingMove(u32 battler, u32 move)
{
    if (!gBattleMons[battler].volatiles.healBlock)
        return FALSE;

    return IsHealingMove(move);
}

bool32 IsBelchPreventingMove(u32 battler, u32 move)
{
    if (GetMoveEffect(move) != EFFECT_BELCH)
        return FALSE;

    return !GetBattlerPartyState(battler)->ateBerry;
}

// Dynamax bypasses all selection prevention except Taunt and Assault Vest.
#define DYNAMAX_BYPASS_CHECK    (!IsGimmickSelected(battler, GIMMICK_DYNAMAX) && GetActiveGimmick(battler) != GIMMICK_DYNAMAX)

u32 TrySetCantSelectMoveBattleScript(u32 battler)
{
    u32 limitations = 0;
    u8 moveId = gBattleResources->bufferB[battler][2] & ~RET_GIMMICK;
    u32 move = gBattleMons[battler].moves[moveId];
    enum HoldEffect holdEffect = GetBattlerHoldEffect(battler);
    u16 *choicedMove = &gBattleStruct->choicedMove[battler];
    enum BattleMoveEffects moveEffect = GetMoveEffect(move);

    if (GetGenConfig(GEN_CONFIG_ENCORE_TARGET) >= GEN_5
     && DYNAMAX_BYPASS_CHECK && GetActiveGimmick(battler) != GIMMICK_Z_MOVE && gDisableStructs[battler].encoredMove != move && gDisableStructs[battler].encoredMove != MOVE_NONE)
    {
        gBattleScripting.battler = battler;
        gCurrentMove = gDisableStructs[battler].encoredMove;
        if (gBattleTypeFlags & BATTLE_TYPE_PALACE)
        {
            gPalaceSelectionBattleScripts[battler] = BattleScript_EncoredMoveInPalace;
            gProtectStructs[battler].palaceUnableToUseMove = TRUE;
        }
        else
        {
            gSelectionBattleScripts[battler] = BattleScript_EncoredMove;
            limitations++;
        }
        return limitations;
    }

    if (DYNAMAX_BYPASS_CHECK && GetActiveGimmick(battler) != GIMMICK_Z_MOVE && gDisableStructs[battler].disabledMove == move && move != MOVE_NONE)
    {
        gBattleScripting.battler = battler;
        gCurrentMove = move;
        if (gBattleTypeFlags & BATTLE_TYPE_PALACE)
        {
            gPalaceSelectionBattleScripts[battler] = BattleScript_SelectingDisabledMoveInPalace;
            gProtectStructs[battler].palaceUnableToUseMove = TRUE;
        }
        else
        {
            gSelectionBattleScripts[battler] = BattleScript_SelectingDisabledMove;
            limitations++;
        }
    }

    if (DYNAMAX_BYPASS_CHECK && GetActiveGimmick(battler) != GIMMICK_Z_MOVE && move == gLastMoves[battler] && move != MOVE_STRUGGLE && (gBattleMons[battler].volatiles.torment == TRUE))
    {
        CancelMultiTurnMoves(battler, SKY_DROP_IGNORE);
        if (gBattleTypeFlags & BATTLE_TYPE_PALACE)
        {
            gPalaceSelectionBattleScripts[battler] = BattleScript_SelectingTormentedMoveInPalace;
            gProtectStructs[battler].palaceUnableToUseMove = TRUE;
        }
        else
        {
            gSelectionBattleScripts[battler] = BattleScript_SelectingTormentedMove;
            limitations++;
        }
    }

    if (GetActiveGimmick(battler) != GIMMICK_Z_MOVE && gDisableStructs[battler].tauntTimer != 0 && IsBattleMoveStatus(move))
    {
        if ((GetActiveGimmick(battler) == GIMMICK_DYNAMAX))
            gCurrentMove = MOVE_MAX_GUARD;
        else
            gCurrentMove = move;
        if (gBattleTypeFlags & BATTLE_TYPE_PALACE)
        {
            gPalaceSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedMoveTauntInPalace;
            gProtectStructs[battler].palaceUnableToUseMove = TRUE;
        }
        else
        {
            gSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedMoveTaunt;
            limitations++;
        }
    }

    if (DYNAMAX_BYPASS_CHECK && GetActiveGimmick(battler) != GIMMICK_Z_MOVE && gDisableStructs[battler].throatChopTimer > 0 && IsSoundMove(move))
    {
        gCurrentMove = move;
        if (gBattleTypeFlags & BATTLE_TYPE_PALACE)
        {
            gPalaceSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedMoveThroatChopInPalace;
            gProtectStructs[battler].palaceUnableToUseMove = TRUE;
        }
        else
        {
            gSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedMoveThroatChop;
            limitations++;
        }
    }

    if (DYNAMAX_BYPASS_CHECK && GetActiveGimmick(battler) != GIMMICK_Z_MOVE && GetImprisonedMovesCount(battler, move))
    {
        gCurrentMove = move;
        if (gBattleTypeFlags & BATTLE_TYPE_PALACE)
        {
            gPalaceSelectionBattleScripts[battler] = BattleScript_SelectingImprisonedMoveInPalace;
            gProtectStructs[battler].palaceUnableToUseMove = TRUE;
        }
        else
        {
            gSelectionBattleScripts[battler] = BattleScript_SelectingImprisonedMove;
            limitations++;
        }
    }

    if (DYNAMAX_BYPASS_CHECK && GetActiveGimmick(battler) != GIMMICK_Z_MOVE && IsGravityPreventingMove(move))
    {
        gCurrentMove = move;
        if (gBattleTypeFlags & BATTLE_TYPE_PALACE)
        {
            gPalaceSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedMoveGravityInPalace;
            gProtectStructs[battler].palaceUnableToUseMove = TRUE;
        }
        else
        {
            gSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedMoveGravity;
            limitations++;
        }
    }

    if (DYNAMAX_BYPASS_CHECK && GetActiveGimmick(battler) != GIMMICK_Z_MOVE && IsHealBlockPreventingMove(battler, move))
    {
        gCurrentMove = move;
        if (gBattleTypeFlags & BATTLE_TYPE_PALACE)
        {
            gPalaceSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedMoveHealBlockInPalace;
            gProtectStructs[battler].palaceUnableToUseMove = TRUE;
        }
        else
        {
            gSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedMoveHealBlock;
            limitations++;
        }
    }

    if (DYNAMAX_BYPASS_CHECK && GetActiveGimmick(battler) != GIMMICK_Z_MOVE && IsBelchPreventingMove(battler, move))
    {
        gCurrentMove = move;
        if (gBattleTypeFlags & BATTLE_TYPE_PALACE)
        {
            gPalaceSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedBelchInPalace;
            gProtectStructs[battler].palaceUnableToUseMove = TRUE;
        }
        else
        {
            gSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedBelch;
            limitations++;
        }
    }

    if (DYNAMAX_BYPASS_CHECK && moveEffect == EFFECT_STUFF_CHEEKS && GetItemPocket(gBattleMons[battler].item) != POCKET_BERRIES)
    {
        gCurrentMove = move;
        if (gBattleTypeFlags & BATTLE_TYPE_PALACE)
        {
            gPalaceSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedStuffCheeksInPalace;
            gProtectStructs[battler].palaceUnableToUseMove = TRUE;
        }
        else
        {
            gSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedStuffCheeks;
            limitations++;
        }
    }

    if (MoveCantBeUsedTwice(move) && move == gLastResultingMoves[battler])
    {
        gCurrentMove = move;
        PREPARE_MOVE_BUFFER(gBattleTextBuff1, gCurrentMove);
        if (gBattleTypeFlags & BATTLE_TYPE_PALACE)
        {
            gPalaceSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedCurrentMoveInPalace;
            gProtectStructs[battler].palaceUnableToUseMove = TRUE;
        }
        else
        {
            gSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedCurrentMove;
            limitations++;
        }
    }

    gPotentialItemEffectBattler = battler;
    if (DYNAMAX_BYPASS_CHECK && IsHoldEffectChoice(holdEffect) && *choicedMove != MOVE_NONE && *choicedMove != MOVE_UNAVAILABLE && *choicedMove != move)
    {
        gCurrentMove = *choicedMove;
        gLastUsedItem = gBattleMons[battler].item;
        if (gBattleTypeFlags & BATTLE_TYPE_PALACE)
        {
            gPalaceSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedMoveChoiceItemInPalace;
            gProtectStructs[battler].palaceUnableToUseMove = TRUE;
        }
        else
        {
            gSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedMoveChoiceItem;
            limitations++;
        }
    }
    else if (holdEffect == HOLD_EFFECT_ASSAULT_VEST && IsBattleMoveStatus(move) && moveEffect != EFFECT_ME_FIRST)
    {
        if ((GetActiveGimmick(battler) == GIMMICK_DYNAMAX))
            gCurrentMove = MOVE_MAX_GUARD;
        else
            gCurrentMove = move;
        gLastUsedItem = gBattleMons[battler].item;
        if (gBattleTypeFlags & BATTLE_TYPE_PALACE)
        {
            gPalaceSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedMoveAssaultVestInPalace;
            gProtectStructs[battler].palaceUnableToUseMove = TRUE;
        }
        else
        {
            gSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedMoveAssaultVest;
            limitations++;
        }
    }
    if (DYNAMAX_BYPASS_CHECK && (GetBattlerAbility(battler) == ABILITY_GORILLA_TACTICS) && *choicedMove != MOVE_NONE
              && *choicedMove != MOVE_UNAVAILABLE && *choicedMove != move)
    {
        gCurrentMove = *choicedMove;
        gLastUsedItem = gBattleMons[battler].item;
        if (gBattleTypeFlags & BATTLE_TYPE_PALACE)
        {
            gPalaceSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedMoveGorillaTacticsInPalace;
            gProtectStructs[battler].palaceUnableToUseMove = TRUE;
        }
        else
        {
            gSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedMoveGorillaTactics;
            limitations++;
        }
    }

    if (gBattleMons[battler].pp[moveId] == 0)
    {
        if (gBattleTypeFlags & BATTLE_TYPE_PALACE)
        {
            gProtectStructs[battler].palaceUnableToUseMove = TRUE;
        }
        else
        {
            gSelectionBattleScripts[battler] = BattleScript_SelectingMoveWithNoPP;
            limitations++;
        }
    }

    if (moveEffect == EFFECT_PLACEHOLDER)
    {
        if (gBattleTypeFlags & BATTLE_TYPE_PALACE)
        {
            gPalaceSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedPlaceholderInPalace;
            gProtectStructs[battler].palaceUnableToUseMove = TRUE;
        }
        else
        {
            gSelectionBattleScripts[battler] = BattleScript_SelectingNotAllowedPlaceholder;
            limitations++;
        }
    }

    return limitations;
}

u32 CheckMoveLimitations(u32 battler, u8 unusableMoves, u16 check)
{
    u32 move;
    enum BattleMoveEffects moveEffect;
    enum HoldEffect holdEffect = GetBattlerHoldEffect(battler);
    u16 *choicedMove = &gBattleStruct->choicedMove[battler];
    s32 i;

    gPotentialItemEffectBattler = battler;

    for (i = 0; i < MAX_MON_MOVES; i++)
    {
        move = gBattleMons[battler].moves[i];
        moveEffect = GetMoveEffect(move);
        // No move
        if (check & MOVE_LIMITATION_ZEROMOVE && move == MOVE_NONE)
            unusableMoves |= 1u << i;
        // No PP
        else if (check & MOVE_LIMITATION_PP && gBattleMons[battler].pp[i] == 0)
            unusableMoves |= 1u << i;
        // Placeholder
        else if (check & MOVE_LIMITATION_PLACEHOLDER && moveEffect == EFFECT_PLACEHOLDER)
            unusableMoves |= 1u << i;
        // Disable
        else if (check & MOVE_LIMITATION_DISABLED && move == gDisableStructs[battler].disabledMove)
            unusableMoves |= 1u << i;
        // Torment
        else if (check & MOVE_LIMITATION_TORMENTED && move == gLastMoves[battler] && gBattleMons[battler].volatiles.torment == TRUE)
            unusableMoves |= 1u << i;
        // Taunt
        else if (check & MOVE_LIMITATION_TAUNT && gDisableStructs[battler].tauntTimer && IsBattleMoveStatus(move))
            unusableMoves |= 1u << i;
        // Imprison
        else if (check & MOVE_LIMITATION_IMPRISON && GetImprisonedMovesCount(battler, move))
            unusableMoves |= 1u << i;
        // Encore
        else if (check & MOVE_LIMITATION_ENCORE && gDisableStructs[battler].encoreTimer && gDisableStructs[battler].encoredMove != move)
            unusableMoves |= 1u << i;
        // Choice Items
        else if (check & MOVE_LIMITATION_CHOICE_ITEM && IsHoldEffectChoice(holdEffect) && *choicedMove != MOVE_NONE && *choicedMove != MOVE_UNAVAILABLE && *choicedMove != move)
            unusableMoves |= 1u << i;
        // Assault Vest
        else if (check & MOVE_LIMITATION_ASSAULT_VEST && holdEffect == HOLD_EFFECT_ASSAULT_VEST && IsBattleMoveStatus(move) && moveEffect != EFFECT_ME_FIRST)
            unusableMoves |= 1u << i;
        // Gravity
        else if (check & MOVE_LIMITATION_GRAVITY && IsGravityPreventingMove(move))
            unusableMoves |= 1u << i;
        // Heal Block
        else if (check & MOVE_LIMITATION_HEAL_BLOCK && IsHealBlockPreventingMove(battler, move))
            unusableMoves |= 1u << i;
        // Belch
        else if (check & MOVE_LIMITATION_BELCH && IsBelchPreventingMove(battler, move))
            unusableMoves |= 1u << i;
        // Throat Chop
        else if (check & MOVE_LIMITATION_THROAT_CHOP && gDisableStructs[battler].throatChopTimer > 0 && IsSoundMove(move))
            unusableMoves |= 1u << i;
        // Stuff Cheeks
        else if (check & MOVE_LIMITATION_STUFF_CHEEKS && moveEffect == EFFECT_STUFF_CHEEKS && GetItemPocket(gBattleMons[battler].item) != POCKET_BERRIES)
            unusableMoves |= 1u << i;
        // Gorilla Tactics
        else if (check & MOVE_LIMITATION_CHOICE_ITEM && GetBattlerAbility(battler) == ABILITY_GORILLA_TACTICS && *choicedMove != MOVE_NONE && *choicedMove != MOVE_UNAVAILABLE && *choicedMove != move)
            unusableMoves |= 1u << i;
        // Can't Use Twice flag
        else if (check & MOVE_LIMITATION_CANT_USE_TWICE && MoveCantBeUsedTwice(move) && move == gLastResultingMoves[battler])
            unusableMoves |= 1u << i;
    }
    return unusableMoves;
}

#define ALL_MOVES_MASK ((1 << MAX_MON_MOVES) - 1)
bool32 AreAllMovesUnusable(u32 battler)
{
    u32 unusable = CheckMoveLimitations(battler, 0, MOVE_LIMITATIONS_ALL);

    if (unusable == ALL_MOVES_MASK) // All moves are unusable.
    {
        gProtectStructs[battler].noValidMoves = TRUE;
        gSelectionBattleScripts[battler] = BattleScript_NoMovesLeft;
    }
    else
    {
        gProtectStructs[battler].noValidMoves = FALSE;
    }

    return (unusable == ALL_MOVES_MASK);
}

u8 GetImprisonedMovesCount(u32 battler, u16 move)
{
    s32 i;
    u8 imprisonedMoves = 0;
    u32 battlerSide = GetBattlerSide(battler);

    for (i = 0; i < gBattlersCount; i++)
    {
        if (battlerSide != GetBattlerSide(i) && gBattleMons[i].volatiles.imprison)
        {
            s32 j;
            for (j = 0; j < MAX_MON_MOVES; j++)
            {
                if (move == gBattleMons[i].moves[j])
                    break;
            }
            if (j < MAX_MON_MOVES)
                imprisonedMoves++;
        }
    }

    return imprisonedMoves;
}

u32 GetBattlerAffectionHearts(u32 battler)
{
    struct Pokemon *mon = GetBattlerMon(battler);
    u16 species = GetMonData(mon, MON_DATA_SPECIES);

    if (!IsOnPlayerSide(battler))
        return AFFECTION_NO_HEARTS;
    else if (gSpeciesInfo[species].isMegaEvolution
          || (gBattleTypeFlags & (BATTLE_TYPE_EREADER_TRAINER
                                | BATTLE_TYPE_FRONTIER
                                | BATTLE_TYPE_LINK
                                | BATTLE_TYPE_RECORDED_LINK
                                | BATTLE_TYPE_SECRET_BASE)))
        return AFFECTION_NO_HEARTS;

    return GetMonAffectionHearts(mon);
}

// gBattlerAttacker is the battler that's trying to raise their stats and due to limitations of RandomUniformExcept, cannot be an argument
bool32 MoodyCantRaiseStat(u32 stat)
{
    return CompareStat(gBattlerAttacker, stat, MAX_STAT_STAGE, CMP_EQUAL, GetBattlerAbility(gBattlerAttacker));
}

// gBattlerAttacker is the battler that's trying to lower their stats and due to limitations of RandomUniformExcept, cannot be an argument
bool32 MoodyCantLowerStat(u32 stat)
{
    return stat == GET_STAT_BUFF_ID(gBattleScripting.statChanger) || CompareStat(gBattlerAttacker, stat, MIN_STAT_STAGE, CMP_EQUAL, GetBattlerAbility(gBattlerAttacker));
}

void TryToRevertMimicryAndFlags(void)
{
    for (u32 battler = 0; battler < gBattlersCount; battler++)
    {
        gDisableStructs[battler].terrainAbilityDone = FALSE;
        if (IsAbilityAndRecord(battler, GetBattlerAbility(battler), ABILITY_MIMICRY))
            RESTORE_BATTLER_TYPE(battler);
    }
}

bool32 BattleArenaTurnEnd(void)
{
    if ((gBattleTypeFlags & BATTLE_TYPE_ARENA)
     && gBattleStruct->eventState.arenaTurn == 2
     && IsBattlerAlive(B_POSITION_PLAYER_LEFT) && IsBattlerAlive(B_POSITION_OPPONENT_LEFT))
    {
        for (u32 battler = 0; battler < 2; battler++)
            CancelMultiTurnMoves(battler, SKY_DROP_IGNORE);

        gBattlescriptCurrInstr = BattleScript_ArenaDoJudgment;
        BattleScriptExecute(BattleScript_ArenaDoJudgment);
        return TRUE;
    }
    return FALSE;
}

// Ingrain, Leech Seed, Strength Sap and Aqua Ring
s32 GetDrainedBigRootHp(u32 battler, s32 hp)
{
    if (GetBattlerHoldEffect(battler) == HOLD_EFFECT_BIG_ROOT)
        hp = (hp * 1300) / 1000;
    if (hp == 0)
        hp = 1;

    return hp;
}

// Should always be the last check. Otherwise the ability might be wrongly recorded.
bool32 IsAbilityAndRecord(u32 battler, enum Ability battlerAbility, enum Ability abilityToCheck)
{
    if (battlerAbility != abilityToCheck)
        return FALSE;

    RecordAbilityBattle(battler, abilityToCheck);
    return TRUE;
}

bool32 HandleFaintedMonActions(void)
{
    if (gBattleTypeFlags & BATTLE_TYPE_SAFARI)
        return FALSE;
    do
    {
        s32 i;
        switch (gBattleStruct->eventState.faintedAction)
        {
        case FAINTED_ACTIONS_NO_MONS_TO_SWITCH:
            gBattleStruct->eventState.faintedActionBattler = 0;
            gBattleStruct->eventState.faintedAction++;
            for (i = 0; i < gBattlersCount; i++)
            {
                if (gAbsentBattlerFlags & (1u << i) && !HasNoMonsToSwitch(i, PARTY_SIZE, PARTY_SIZE))
                    gAbsentBattlerFlags &= ~(1u << i);
            }
            // fall through
        case FAINTED_ACTIONS_GIVE_EXP:
            do
            {
                gBattlerFainted = gBattlerTarget = gBattleStruct->eventState.faintedActionBattler;
                if (gBattleMons[gBattleStruct->eventState.faintedActionBattler].hp == 0
                 && !(gBattleStruct->givenExpMons & (1u << gBattlerPartyIndexes[gBattleStruct->eventState.faintedActionBattler]))
                 && !(gAbsentBattlerFlags & (1u << gBattleStruct->eventState.faintedActionBattler)))
                {
                    BattleScriptExecute(BattleScript_GiveExp);
                    gBattleStruct->eventState.faintedAction = 2;
                    return TRUE;
                }
            } while (++gBattleStruct->eventState.faintedActionBattler != gBattlersCount);
            gBattleStruct->eventState.faintedAction = 3;
            break;
        case FAINTED_ACTIONS_SET_ABSENT_FLAGS:
            OpponentSwitchInResetSentPokesToOpponentValue(gBattlerFainted);
            if (++gBattleStruct->eventState.faintedActionBattler == gBattlersCount)
                gBattleStruct->eventState.faintedAction = 3;
            else
                gBattleStruct->eventState.faintedAction = 1;
            // Don't switch mons until all pokemon performed their actions or the battle's over.
            if (B_FAINT_SWITCH_IN >= GEN_4
                && gBattleOutcome == 0
                && !NoAliveMonsForEitherParty()
                && gCurrentTurnActionNumber != gBattlersCount)
            {
                gAbsentBattlerFlags |= 1u << gBattlerFainted;
                if (gBattleStruct->eventState.faintedAction != 1)
                    return FALSE;
            }
            break;
        case FAINTED_ACTIONS_WAIT_STATE:
            // Don't switch mons until all pokemon performed their actions or the battle's over.
            if (B_FAINT_SWITCH_IN >= GEN_4
                && gBattleOutcome == 0
                && !NoAliveMonsForEitherParty()
                && gCurrentTurnActionNumber != gBattlersCount)
            {
                return FALSE;
            }
            gBattleStruct->eventState.faintedActionBattler = 0;
            gBattleStruct->eventState.faintedAction++;
            // fall through
        case FAINTED_ACTIONS_HANDLE_FAINTED_MON:
            do
            {
                gBattlerFainted = gBattlerTarget = gBattleStruct->eventState.faintedActionBattler;
                if (gBattleMons[gBattleStruct->eventState.faintedActionBattler].hp == 0
                 && !(gAbsentBattlerFlags & (1u << gBattleStruct->eventState.faintedActionBattler)))
                {
                    BattleScriptExecute(BattleScript_HandleFaintedMon);
                    gBattleStruct->eventState.faintedAction = 5;
                    return TRUE;
                }
            } while (++gBattleStruct->eventState.faintedActionBattler != gBattlersCount);
            gBattleStruct->eventState.faintedAction = FAINTED_ACTIONS_MAX_CASE;
            break;
        case FAINTED_ACTIONS_HANDLE_NEXT_BATTLER:
            if (++gBattleStruct->eventState.faintedActionBattler == gBattlersCount)
                gBattleStruct->eventState.faintedAction = FAINTED_ACTIONS_MAX_CASE;
            else
                gBattleStruct->eventState.faintedAction = 4;
            break;
        case FAINTED_ACTIONS_MAX_CASE:
            break;
        }
    } while (gBattleStruct->eventState.faintedAction != FAINTED_ACTIONS_MAX_CASE);
    return FALSE;
}

void TryClearRageAndFuryCutter(void)
{
    s32 i;
    for (i = 0; i < gBattlersCount; i++)
    {
        if (gBattleMons[i].volatiles.rage && gChosenMoveByBattler[i] != MOVE_RAGE)
            gBattleMons[i].volatiles.rage = FALSE;
        if (gDisableStructs[i].furyCutterCounter != 0 && gChosenMoveByBattler[i] != MOVE_FURY_CUTTER)
            gDisableStructs[i].furyCutterCounter = 0;
    }
}

static inline bool32 TryFormChangeBeforeMove(void)
{
    bool32 result = TryBattleFormChange(gBattlerAttacker, FORM_CHANGE_BATTLE_BEFORE_MOVE);
    if (!result)
        result = TryBattleFormChange(gBattlerAttacker, FORM_CHANGE_BATTLE_BEFORE_MOVE_CATEGORY);
    if (!result)
        return FALSE;

    gBattleScripting.battler = gBattlerAttacker;
    BattleScriptCall(BattleScript_BattlerFormChange);
    return TRUE;
}

static inline bool32 TryActivatePowderStatus(u32 move)
{
    u32 partnerMove = GetChosenMoveFromPosition(BATTLE_PARTNER(gBattlerAttacker));
    if (!gBattleMons[gBattlerAttacker].volatiles.powder)
        return FALSE;
    if (GetBattleMoveType(move) == TYPE_FIRE && !gBattleStruct->pledgeMove)
        return TRUE;
    if (move == MOVE_FIRE_PLEDGE && partnerMove == MOVE_GRASS_PLEDGE)
        return TRUE;
    if (move == MOVE_GRASS_PLEDGE && partnerMove == MOVE_FIRE_PLEDGE && gBattleStruct->pledgeMove)
        return TRUE;
    return FALSE;
}

static enum MoveCanceler CancelerClearFlags(struct BattleContext *ctx)
{
    gBattleMons[ctx->battlerAtk].volatiles.grudge = FALSE;
    gBattleMons[ctx->battlerAtk].volatiles.glaiveRush = FALSE;
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerStanceChangeOne(struct BattleContext *ctx)
{
    if (B_STANCE_CHANGE_FAIL < GEN_7 && gChosenMove == ctx->currentMove && TryFormChangeBeforeMove())
        return MOVE_STEP_BREAK;
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerSkyDrop(struct BattleContext *ctx)
{
    // If Pokemon is being held in Sky Drop
    if (gBattleMons[ctx->battlerAtk].volatiles.semiInvulnerable == STATE_SKY_DROP)
    {
        gBattlescriptCurrInstr = BattleScript_MoveEnd;
        gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
        return MOVE_STEP_FAILURE;
    }
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerRecharge(struct BattleContext *ctx)
{
    if (gDisableStructs[ctx->battlerAtk].rechargeTimer > 0)
    {
        CancelMultiTurnMoves(ctx->battlerAtk, SKY_DROP_ATTACKCANCELER_CHECK);
        gBattlescriptCurrInstr = BattleScript_MoveUsedMustRecharge;
        gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
        return MOVE_STEP_FAILURE;
    }
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerAsleepOrFrozen(struct BattleContext *ctx)
{
    if (gBattleMons[ctx->battlerAtk].status1 & STATUS1_SLEEP)
    {
        if (UproarWakeUpCheck(ctx->battlerAtk))
        {
            TryDeactivateSleepClause(GetBattlerSide(ctx->battlerAtk), gBattlerPartyIndexes[ctx->battlerAtk]);
            gBattleMons[ctx->battlerAtk].status1 &= ~STATUS1_SLEEP;
            gBattleMons[ctx->battlerAtk].volatiles.nightmare = FALSE;
            gEffectBattler = ctx->battlerAtk;
            gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_WOKE_UP_UPROAR;
            BattleScriptCall(BattleScript_MoveUsedWokeUp);
            return MOVE_STEP_REMOVES_STATUS;
        }
        else
        {
            u8 toSub;
            if (IsAbilityAndRecord(ctx->battlerAtk, ctx->abilities[ctx->battlerAtk], ABILITY_EARLY_BIRD))
                toSub = 2;
            else
                toSub = 1;
            if ((gBattleMons[ctx->battlerAtk].status1 & STATUS1_SLEEP) < toSub)
                gBattleMons[ctx->battlerAtk].status1 &= ~STATUS1_SLEEP;
            else
                gBattleMons[ctx->battlerAtk].status1 -= toSub;

            enum BattleMoveEffects moveEffect = GetMoveEffect(ctx->currentMove);
            if (gBattleMons[ctx->battlerAtk].status1 & STATUS1_SLEEP)
            {
                if (moveEffect != EFFECT_SNORE && moveEffect != EFFECT_SLEEP_TALK)
                {
                    gProtectStructs[ctx->battlerAtk].nonVolatileStatusImmobility = TRUE;
                    gBattlescriptCurrInstr = BattleScript_MoveUsedIsAsleep;
                    gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
                    return MOVE_STEP_REMOVES_STATUS;
                }
            }
            else
            {
                TryDeactivateSleepClause(GetBattlerSide(ctx->battlerAtk), gBattlerPartyIndexes[ctx->battlerAtk]);
                gBattleMons[ctx->battlerAtk].volatiles.nightmare = FALSE;
                gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_WOKE_UP;
                BattleScriptCall(BattleScript_MoveUsedWokeUp);
                return MOVE_STEP_REMOVES_STATUS;
            }
        }
    }
    else if (gBattleMons[ctx->battlerAtk].status1 & STATUS1_FREEZE && !MoveThawsUser(ctx->currentMove))
    {
        if (!RandomPercentage(RNG_FROZEN, 20))
        {
            gProtectStructs[ctx->battlerAtk].nonVolatileStatusImmobility = TRUE;
            gBattlescriptCurrInstr = BattleScript_MoveUsedIsFrozen;
            gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
        }
        else // unfreeze
        {
            gBattleMons[ctx->battlerAtk].status1 &= ~STATUS1_FREEZE;
            BattleScriptCall(BattleScript_MoveUsedUnfroze);
            gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_DEFROSTED;
        }
        return MOVE_STEP_REMOVES_STATUS; // Move failure but also removes status
    }
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerObedience(struct BattleContext *ctx)
{
    if (!gBattleMons[ctx->battlerAtk].volatiles.multipleTurns)
    {
        enum Obedience obedienceResult = GetAttackerObedienceForAction();
        switch (obedienceResult)
        {
        case OBEYS:
            gHitMarker |= HITMARKER_OBEYS;
            return MOVE_STEP_SUCCESS;
        case DISOBEYS_LOAFS:
            // Randomly select, then print a disobedient string
            // B_MSG_LOAFING, B_MSG_WONT_OBEY, B_MSG_TURNED_AWAY, or B_MSG_PRETEND_NOT_NOTICE
            gBattleCommunication[MULTISTRING_CHOOSER] = MOD(Random(), NUM_LOAF_STRINGS);
            gBattlescriptCurrInstr = BattleScript_MoveUsedLoafingAround;
            gBattleStruct->moveResultFlags[ctx->battlerDef] |= MOVE_RESULT_MISSED;
            return MOVE_STEP_FAILURE;
        case DISOBEYS_HITS_SELF:
            gBattlerTarget = ctx->battlerAtk;
            struct DamageContext dmgCtx = {0};
            dmgCtx.battlerAtk = dmgCtx.battlerDef = ctx->battlerAtk;
            dmgCtx.move = dmgCtx.chosenMove = MOVE_NONE;
            dmgCtx.moveType = TYPE_MYSTERY;
            dmgCtx.isCrit = FALSE;
            dmgCtx.randomFactor = FALSE;
            dmgCtx.updateFlags = TRUE;
            dmgCtx.isSelfInflicted = TRUE;
            dmgCtx.fixedBasePower = 40;
            gBattleStruct->moveDamage[ctx->battlerAtk] = CalculateMoveDamage(&dmgCtx);
            gBattlescriptCurrInstr = BattleScript_IgnoresAndHitsItself;
            gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
            gHitMarker |= HITMARKER_OBEYS;
            return MOVE_STEP_FAILURE; // Move doesn't fail but mon hits itself
        case DISOBEYS_FALL_ASLEEP:
            if (IsSleepClauseEnabled())
                gBattleStruct->battlerState[ctx->battlerAtk].sleepClauseEffectExempt = TRUE;
            gBattlescriptCurrInstr = BattleScript_IgnoresAndFallsAsleep;
            gBattleStruct->moveResultFlags[ctx->battlerDef] |= MOVE_RESULT_MISSED;
            return MOVE_STEP_FAILURE;
            break;
        case DISOBEYS_WHILE_ASLEEP:
            gBattlescriptCurrInstr = BattleScript_IgnoresWhileAsleep;
            gBattleStruct->moveResultFlags[ctx->battlerDef] |= MOVE_RESULT_MISSED;
            return MOVE_STEP_FAILURE;
        case DISOBEYS_RANDOM_MOVE:
            gCurrentMove = gCalledMove = gBattleMons[ctx->battlerAtk].moves[gCurrMovePos];
            BattleScriptCall(BattleScript_IgnoresAndUsesRandomMove);
            gBattlerTarget = GetBattleMoveTarget(gCalledMove, NO_TARGET_OVERRIDE);
            gHitMarker |= HITMARKER_OBEYS;
            return MOVE_STEP_BREAK;
        }
    }
    gHitMarker |= HITMARKER_OBEYS;
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerPowerPoints(struct BattleContext *ctx)
{
    if (gBattleMons[ctx->battlerAtk].pp[gCurrMovePos] == 0
     && ctx->currentMove != MOVE_STRUGGLE
     && !gSpecialStatuses[ctx->battlerAtk].dancerUsedMove
     && !gBattleMons[ctx->battlerAtk].volatiles.multipleTurns)
    {
        gBattlescriptCurrInstr = BattleScript_NoPPForMove;
        gBattleStruct->moveResultFlags[ctx->battlerDef] |= MOVE_RESULT_MISSED;
        return MOVE_STEP_FAILURE;
    }

    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerTruant(struct BattleContext *ctx)
{
    if (GetBattlerAbility(ctx->battlerAtk) == ABILITY_TRUANT && gDisableStructs[ctx->battlerAtk].truantCounter)
    {
        CancelMultiTurnMoves(ctx->battlerAtk, SKY_DROP_ATTACKCANCELER_CHECK);
        gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
        gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_LOAFING;
        gBattlerAbility = ctx->battlerAtk;
        gBattlescriptCurrInstr = BattleScript_TruantLoafingAround;
        gBattleStruct->moveResultFlags[ctx->battlerDef] |= MOVE_RESULT_MISSED;
        return MOVE_STEP_FAILURE;
    }
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerFlinch(struct BattleContext *ctx)
{
    if (gBattleMons[ctx->battlerAtk].volatiles.flinched)
    {
        gProtectStructs[ctx->battlerAtk].unableToUseMove = TRUE;
        CancelMultiTurnMoves(ctx->battlerAtk, SKY_DROP_ATTACKCANCELER_CHECK);
        gBattlescriptCurrInstr = BattleScript_MoveUsedFlinched;
        gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
        return MOVE_STEP_FAILURE;
    }
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerDisabled(struct BattleContext *ctx)
{
    if (GetActiveGimmick(ctx->battlerAtk) != GIMMICK_Z_MOVE
     && gDisableStructs[ctx->battlerAtk].disabledMove == ctx->currentMove
     && gDisableStructs[ctx->battlerAtk].disabledMove != MOVE_NONE)
    {
        gProtectStructs[ctx->battlerAtk].unableToUseMove = TRUE;
        gBattleScripting.battler = ctx->battlerAtk;
        CancelMultiTurnMoves(ctx->battlerAtk, SKY_DROP_ATTACKCANCELER_CHECK);
        gBattlescriptCurrInstr = BattleScript_MoveUsedIsDisabled;
        gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
        return MOVE_STEP_FAILURE;
    }
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerVolatileBlocked(struct BattleContext *ctx)
{
    if (GetActiveGimmick(ctx->battlerAtk) != GIMMICK_Z_MOVE
     && gBattleMons[ctx->battlerAtk].volatiles.healBlock
     && IsHealBlockPreventingMove(ctx->battlerAtk, ctx->currentMove))
    {
        gProtectStructs[ctx->battlerAtk].unableToUseMove = TRUE;
        gBattleScripting.battler = ctx->battlerAtk;
        CancelMultiTurnMoves(ctx->battlerAtk, SKY_DROP_ATTACKCANCELER_CHECK);
        gBattlescriptCurrInstr = BattleScript_MoveUsedHealBlockPrevents;
        gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
        return MOVE_STEP_FAILURE;
    }
    else if (gFieldStatuses & STATUS_FIELD_GRAVITY && IsGravityPreventingMove(ctx->currentMove))
    {
        gProtectStructs[ctx->battlerAtk].unableToUseMove = TRUE;
        gBattleScripting.battler = ctx->battlerAtk;
        CancelMultiTurnMoves(ctx->battlerAtk, SKY_DROP_ATTACKCANCELER_CHECK);
        gBattlescriptCurrInstr = BattleScript_MoveUsedGravityPrevents;
        gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
        return MOVE_STEP_FAILURE;
    }
    else if (GetActiveGimmick(ctx->battlerAtk) != GIMMICK_Z_MOVE && gDisableStructs[ctx->battlerAtk].throatChopTimer > 0 && IsSoundMove(ctx->currentMove))
    {
        gProtectStructs[ctx->battlerAtk].unableToUseMove = TRUE;
        CancelMultiTurnMoves(ctx->battlerAtk, SKY_DROP_ATTACKCANCELER_CHECK);
        gBattlescriptCurrInstr = BattleScript_MoveUsedIsThroatChopPrevented;
        gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
        return MOVE_STEP_FAILURE;
    }
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerTaunted(struct BattleContext *ctx)
{
    if (GetActiveGimmick(ctx->battlerAtk) != GIMMICK_Z_MOVE && gDisableStructs[ctx->battlerAtk].tauntTimer && IsBattleMoveStatus(ctx->currentMove))
    {
        gProtectStructs[ctx->battlerAtk].unableToUseMove = TRUE;
        CancelMultiTurnMoves(ctx->battlerAtk, SKY_DROP_ATTACKCANCELER_CHECK);
        gBattlescriptCurrInstr = BattleScript_MoveUsedIsTaunted;
        gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
        return MOVE_STEP_BREAK;
    }
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerImprisoned(struct BattleContext *ctx)
{
    if (GetActiveGimmick(ctx->battlerAtk) != GIMMICK_Z_MOVE && GetImprisonedMovesCount(ctx->battlerAtk, ctx->currentMove))
    {
        gProtectStructs[ctx->battlerAtk].unableToUseMove = TRUE;
        CancelMultiTurnMoves(ctx->battlerAtk, SKY_DROP_ATTACKCANCELER_CHECK);
        gBattlescriptCurrInstr = BattleScript_MoveUsedIsImprisoned;
        gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
        return MOVE_STEP_FAILURE;
    }
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerConfused(struct BattleContext *ctx)
{
    if (gBattleMons[ctx->battlerAtk].volatiles.confusionTurns)
    {
        if (!gBattleMons[ctx->battlerAtk].volatiles.infiniteConfusion)
            gBattleMons[ctx->battlerAtk].volatiles.confusionTurns--;
        if (gBattleMons[ctx->battlerAtk].volatiles.confusionTurns)
        {
             // confusion dmg
            if (RandomPercentage(RNG_CONFUSION, (GetGenConfig(GEN_CONFIG_CONFUSION_SELF_DMG_CHANCE) >= GEN_7 ? 33 : 50)))
            {
                gBattleCommunication[MULTISTRING_CHOOSER] = TRUE;
                struct DamageContext dmgCtx = {0};
                dmgCtx.battlerAtk = dmgCtx.battlerDef = ctx->battlerAtk;
                dmgCtx.move = dmgCtx.chosenMove = MOVE_NONE;
                dmgCtx.moveType = TYPE_MYSTERY;
                dmgCtx.isCrit = FALSE;
                dmgCtx.randomFactor = FALSE;
                dmgCtx.updateFlags = TRUE;
                dmgCtx.isSelfInflicted = TRUE;
                dmgCtx.fixedBasePower = 40;
                gBattleStruct->passiveHpUpdate[ctx->battlerAtk] = CalculateMoveDamage(&dmgCtx);
                gProtectStructs[ctx->battlerAtk].confusionSelfDmg = TRUE;
                gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
                gBattlescriptCurrInstr = BattleScript_MoveUsedIsConfused;
            }
            else
            {
                gBattleCommunication[MULTISTRING_CHOOSER] = FALSE;
                BattleScriptCall(BattleScript_MoveUsedIsConfused);
            }
        }
        else // snapped out of confusion
        {
            BattleScriptCall(BattleScript_MoveUsedIsConfusedNoMore);
        }
        return MOVE_STEP_BREAK;
    }
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerParalysed(struct BattleContext *ctx)
{
    if (gBattleMons[ctx->battlerAtk].status1 & STATUS1_PARALYSIS
        && !(B_MAGIC_GUARD == GEN_4 && IsAbilityAndRecord(ctx->battlerAtk, ctx->abilities[ctx->battlerAtk], ABILITY_MAGIC_GUARD))
        && !RandomPercentage(RNG_PARALYSIS, 75))
    {
        gProtectStructs[ctx->battlerAtk].nonVolatileStatusImmobility = TRUE;
        // This is removed in FRLG and Emerald for some reason
        //CancelMultiTurnMoves(gBattlerAttacker, SKY_DROP_ATTACKCANCELER_CHECK);
        gBattlescriptCurrInstr = BattleScript_MoveUsedIsParalyzed;
        gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
        return MOVE_STEP_FAILURE;
    }
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerInfatuation(struct BattleContext *ctx)
{
    if (gBattleMons[ctx->battlerAtk].volatiles.infatuation)
    {
        gBattleScripting.battler = gBattleMons[ctx->battlerAtk].volatiles.infatuation - 1;
        if (!RandomPercentage(RNG_INFATUATION, 50))
        {
            BattleScriptCall(BattleScript_MoveUsedIsInLove);
            return MOVE_STEP_BREAK;
        }
        else
        {
            BattleScriptPush(BattleScript_MoveUsedIsInLoveCantAttack);
            gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
            gProtectStructs[ctx->battlerAtk].unableToUseMove = TRUE;
            CancelMultiTurnMoves(ctx->battlerAtk, SKY_DROP_ATTACKCANCELER_CHECK);
            gBattlescriptCurrInstr = BattleScript_MoveUsedIsInLove;
            return MOVE_STEP_FAILURE;
        }
    }
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerBide(struct BattleContext *ctx)
{
    if (gBattleMons[ctx->battlerAtk].volatiles.bideTurns)
    {
        if (--gBattleMons[ctx->battlerAtk].volatiles.bideTurns)
        {
            gBattlescriptCurrInstr = BattleScript_BideStoringEnergy;
        }
        else
        {
            // This is removed in FRLG and Emerald for some reason
            //gBattleMons[gBattlerAttacker].volatiles.multipleTurns = FALSE;
            if (gBideDmg[ctx->battlerAtk])
            {
                gCurrentMove = MOVE_BIDE;
                gBattlerTarget = gBideTarget[ctx->battlerAtk];
                if (gAbsentBattlerFlags & (1u << ctx->battlerDef))
                    gBattlerTarget = GetBattleMoveTarget(MOVE_BIDE, MOVE_TARGET_SELECTED + 1);
                gBattlescriptCurrInstr = BattleScript_BideAttack;
                return MOVE_STEP_BREAK; // Jumps to a different script but no failure
            }
            else
            {
                gBattlescriptCurrInstr = BattleScript_BideNoEnergyToAttack;
                return MOVE_STEP_FAILURE;
            }
        }
    }
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerZMoves(struct BattleContext *ctx)
{
    if (GetActiveGimmick(ctx->battlerAtk) == GIMMICK_Z_MOVE)
    {
        // attacker has a queued z move
        RecordItemEffectBattle(ctx->battlerAtk, HOLD_EFFECT_Z_CRYSTAL);
        SetGimmickAsActivated(ctx->battlerAtk, GIMMICK_Z_MOVE);

        gBattleScripting.battler = ctx->battlerAtk;
        if (GetMoveCategory(ctx->currentMove) == DAMAGE_CATEGORY_STATUS)
            BattleScriptCall(BattleScript_ZMoveActivateStatus);
        else
            BattleScriptCall(BattleScript_ZMoveActivateDamaging);

        return MOVE_STEP_BREAK;
    }
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerChoiceLock(struct BattleContext *ctx)
{
    u16 *choicedMoveAtk = &gBattleStruct->choicedMove[ctx->battlerAtk];
    enum HoldEffect holdEffect = GetBattlerHoldEffect(ctx->battlerAtk);

    if (gChosenMove != MOVE_STRUGGLE
     && (*choicedMoveAtk == MOVE_NONE || *choicedMoveAtk == MOVE_UNAVAILABLE)
     && (IsHoldEffectChoice(holdEffect) || ctx->abilities[ctx->battlerAtk] == ABILITY_GORILLA_TACTICS))
        *choicedMoveAtk = gChosenMove;

    u32 moveIndex;
    for (moveIndex = 0; moveIndex < MAX_MON_MOVES; moveIndex++)
    {
        if (gBattleMons[ctx->battlerAtk].moves[moveIndex] == *choicedMoveAtk)
            break;
    }

    if (moveIndex == MAX_MON_MOVES)
        *choicedMoveAtk = MOVE_NONE;

    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerCallSubmove(struct BattleContext *ctx)
{
    bool32 noEffect = FALSE;
    u32 calledMove = MOVE_NONE;
    const u8 *battleScript = NULL;
    battleScript = BattleScript_SubmoveAttackstring;

    switch(GetMoveEffect(ctx->currentMove))
    {
    case EFFECT_MIRROR_MOVE:
        calledMove = GetMirrorMoveMove();
        break;
    case EFFECT_METRONOME:
        calledMove = GetMetronomeMove();
        battleScript = BattleScript_MetronomeAttackstring;
        break;
    case EFFECT_ASSIST:
        calledMove = GetAssistMove();
        break;
    case EFFECT_NATURE_POWER:
        calledMove = GetNaturePowerMove(ctx->battlerAtk);
        battleScript = BattleScript_NaturePowerAttackstring;
        break;
    case EFFECT_SLEEP_TALK:
        calledMove = GetSleepTalkMove();
        battleScript = BattleScript_SleepTalkAttackstring;
        break;
    case EFFECT_COPYCAT:
        calledMove = GetCopyCatMove();
        break;
    case EFFECT_ME_FIRST:
        calledMove = GetMeFirstMove();
        break;
    default:
        noEffect = TRUE;
        break;
    }

    if (noEffect)
    {
        gBattleStruct->submoveAnnouncement = SUBMOVE_NO_EFFECT;
        return MOVE_STEP_SUCCESS;
    }

    if (calledMove != MOVE_NONE)
    {
        if (GetActiveGimmick(ctx->battlerAtk) == GIMMICK_Z_MOVE && !IsBattleMoveStatus(calledMove))
            calledMove = GetTypeBasedZMove(calledMove);
        if (GetMoveEffect(ctx->currentMove) == EFFECT_COPYCAT && IsMaxMove(calledMove))
            calledMove = gBattleStruct->dynamax.lastUsedBaseMove;

        gBattleStruct->submoveAnnouncement = SUBMOVE_SUCCESS;
        gCalledMove = calledMove;
        BattleScriptCall(battleScript);
        return MOVE_STEP_BREAK;
    }

    gBattleStruct->submoveAnnouncement = SUBMOVE_FAILURE;
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerThaw(struct BattleContext *ctx)
{
    if (gBattleMons[ctx->battlerAtk].status1 & STATUS1_FREEZE)
    {
        if (!(IsMoveEffectRemoveSpeciesType(ctx->currentMove, MOVE_EFFECT_REMOVE_ARG_TYPE, TYPE_FIRE) && !IS_BATTLER_OF_TYPE(ctx->battlerAtk, TYPE_FIRE)))
        {
            gBattleMons[ctx->battlerAtk].status1 &= ~STATUS1_FREEZE;
            BattleScriptCall(BattleScript_MoveUsedUnfroze);
            gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_DEFROSTED_BY_MOVE;
        }
        return MOVE_STEP_REMOVES_STATUS;
    }
    if (gBattleMons[ctx->battlerAtk].status1 & STATUS1_FROSTBITE && MoveThawsUser(ctx->currentMove))
    {
        if (!(IsMoveEffectRemoveSpeciesType(ctx->currentMove, MOVE_EFFECT_REMOVE_ARG_TYPE, TYPE_FIRE) && !IS_BATTLER_OF_TYPE(ctx->battlerAtk, TYPE_FIRE)))
        {
            gBattleMons[ctx->battlerAtk].status1 &= ~STATUS1_FROSTBITE;
            BattleScriptCall(BattleScript_MoveUsedUnfrostbite);
            gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_FROSTBITE_HEALED_BY_MOVE;
        }
        return MOVE_STEP_REMOVES_STATUS;
    }
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerStanceChangeTwo(struct BattleContext *ctx)
{
    if (B_STANCE_CHANGE_FAIL >= GEN_7 && gChosenMove == ctx->currentMove && TryFormChangeBeforeMove())
        return MOVE_STEP_BREAK;
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerAttackstring(struct BattleContext *ctx)
{
    BattleScriptCall(BattleScript_Attackstring);
    if (!gSpecialStatuses[gBattlerAttacker].dancerUsedMove)
        gLastPrintedMoves[gBattlerAttacker] = gChosenMove;
    return MOVE_STEP_BREAK;
}

static enum MoveCanceler CancelerPPDeduction(struct BattleContext *ctx)
{
    if (gBattleMons[ctx->battlerAtk].volatiles.multipleTurns
     || gSpecialStatuses[ctx->battlerAtk].dancerUsedMove
     || ctx->currentMove == MOVE_STRUGGLE)
        return MOVE_STEP_SUCCESS;

    s32 ppToDeduct = 1;
    u32 moveTarget = GetBattlerMoveTargetType(ctx->battlerAtk, ctx->currentMove);
    u32 movePosition = gCurrMovePos;

    if (gBattleStruct->submoveAnnouncement == SUBMOVE_SUCCESS)
        movePosition = gChosenMovePos;

    if (moveTarget == MOVE_TARGET_BOTH
     || moveTarget == MOVE_TARGET_FOES_AND_ALLY
     || moveTarget == MOVE_TARGET_ALL_BATTLERS
     || MoveForcesPressure(ctx->currentMove))
    {
        for (u32 i = 0; i < gBattlersCount; i++)
        {
            if (!IsBattlerAlly(i, ctx->battlerAtk) && IsBattlerAlive(i))
                ppToDeduct += (GetBattlerAbility(i) == ABILITY_PRESSURE);
        }
    }
    else if (moveTarget != MOVE_TARGET_OPPONENTS_FIELD)
    {
        if (ctx->battlerAtk != ctx->battlerDef && ctx->abilities[ctx->battlerDef] == ABILITY_PRESSURE)
             ppToDeduct++;
    }

    // For item Metronome, echoed voice
    if (ctx->currentMove != gLastResultingMoves[ctx->battlerAtk] || WasUnableToUseMove(ctx->battlerAtk))
        gBattleStruct->metronomeItemCounter[ctx->battlerAtk] = 0;

    if (gBattleMons[ctx->battlerAtk].pp[movePosition] > ppToDeduct)
        gBattleMons[ctx->battlerAtk].pp[movePosition] -= ppToDeduct;
    else
        gBattleMons[ctx->battlerAtk].pp[movePosition] = 0;

    if (MOVE_IS_PERMANENT(ctx->battlerAtk, movePosition))
    {
        BtlController_EmitSetMonData(
            ctx->battlerAtk,
            B_COMM_TO_CONTROLLER,
            REQUEST_PPMOVE1_BATTLE + movePosition,
            0,
            sizeof(gBattleMons[ctx->battlerAtk].pp[movePosition]),
            &gBattleMons[ctx->battlerAtk].pp[movePosition]);
        MarkBattlerForControllerExec(ctx->battlerAtk);
    }

    if (gBattleStruct->submoveAnnouncement != SUBMOVE_NO_EFFECT)
    {
        if (gBattleStruct->submoveAnnouncement == SUBMOVE_FAILURE)
        {
            gBattleStruct->submoveAnnouncement = SUBMOVE_NO_EFFECT;
            gBattlescriptCurrInstr = BattleScript_ButItFailed;
            return MOVE_STEP_FAILURE;
        }
        else if (CancelerVolatileBlocked(ctx) == MOVE_STEP_FAILURE) // Check Gravity/Heal Block/Throat Chop for Submove
        {
            gBattleStruct->submoveAnnouncement = SUBMOVE_NO_EFFECT;
            return MOVE_STEP_FAILURE;
        }
        else
        {
            gBattleStruct->submoveAnnouncement = SUBMOVE_NO_EFFECT;
            gBattlerTarget = GetBattleMoveTarget(ctx->currentMove, NO_TARGET_OVERRIDE);
            gBattleScripting.animTurn = 0;
            gBattleScripting.animTargetsHit = 0;

            // Possibly better to just move type setting and redirection to attackcanceler as a new case at this point
            SetTypeBeforeUsingMove(ctx->currentMove, ctx->battlerAtk);
            HandleMoveTargetRedirection();
            gBattlescriptCurrInstr = GetMoveBattleScript(ctx->currentMove);
            return MOVE_STEP_BREAK;
        }
    }

    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerWeatherPrimal(struct BattleContext *ctx)
{
    enum MoveCanceler effect = MOVE_STEP_SUCCESS;
    if (HasWeatherEffect() && GetMovePower(ctx->currentMove) > 0)
    {
        enum Type moveType = GetBattleMoveType(ctx->currentMove);
        if (moveType == TYPE_FIRE && (gBattleWeather & B_WEATHER_RAIN_PRIMAL) && (GetGenConfig(GEN_CONFIG_POWDER_RAIN) >= GEN_7 || !TryActivatePowderStatus(ctx->currentMove)))
        {
            gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_PRIMAL_WEATHER_FIZZLED_BY_RAIN;
            effect = MOVE_STEP_FAILURE;
        }
        else if (moveType == TYPE_WATER && (gBattleWeather & B_WEATHER_SUN_PRIMAL))
        {
            gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_PRIMAL_WEATHER_EVAPORATED_IN_SUN;
            effect = MOVE_STEP_FAILURE;
        }
        if (effect == MOVE_STEP_FAILURE)
        {
            gProtectStructs[ctx->battlerAtk].chargingTurn = FALSE;
            CancelMultiTurnMoves(ctx->battlerAtk, SKY_DROP_ATTACKCANCELER_CHECK);
            gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
            gBattlescriptCurrInstr = BattleScript_PrimalWeatherBlocksMove;
        }
    }
    return effect;
}

static enum MoveCanceler CancelerMoveFailure(struct BattleContext *ctx)
{
    const u8 *battleScript = NULL;

    switch (GetMoveEffect(ctx->currentMove))
    {
    case EFFECT_FAIL_IF_NOT_ARG_TYPE:
        if (!IS_BATTLER_OF_TYPE(ctx->battlerAtk, GetMoveArgType(ctx->currentMove)))
            battleScript = BattleScript_ButItFailed;
        break;
    case EFFECT_AURA_WHEEL:
        if (gBattleMons[ctx->battlerAtk].species != SPECIES_MORPEKO_FULL_BELLY
         && gBattleMons[ctx->battlerAtk].species != SPECIES_MORPEKO_HANGRY)
            battleScript = BattleScript_PokemonCantUseTheMove;
        break;
    case EFFECT_AURORA_VEIL:
        if (!(gBattleWeather & (B_WEATHER_HAIL | B_WEATHER_SNOW) && HasWeatherEffect()))
            battleScript = BattleScript_ButItFailed;
        break;
    case EFFECT_CLANGOROUS_SOUL:
        if (gBattleMons[ctx->battlerAtk].hp <= max(1, GetNonDynamaxMaxHP(ctx->battlerAtk) / 3))
            battleScript = BattleScript_ButItFailed;
        break;
    case EFFECT_COUNTER:
    case EFFECT_MIRROR_COAT:
    case EFFECT_METAL_BURST:
        // TODO: Needs a refactor because the moves currently don't work according to new gens
        break;
    case EFFECT_DESTINY_BOND:
        if (DoesDestinyBondFail(ctx->battlerAtk))
            battleScript = BattleScript_ButItFailed;
        break;
    case EFFECT_FIRST_TURN_ONLY:
        if (!gDisableStructs[ctx->battlerAtk].isFirstTurn || gSpecialStatuses[ctx->battlerAtk].instructedChosenTarget)
            battleScript = BattleScript_ButItFailed;
        break;
    case EFFECT_MAT_BLOCK:
        if (!gDisableStructs[ctx->battlerAtk].isFirstTurn || gSpecialStatuses[ctx->battlerAtk].instructedChosenTarget)
            battleScript = BattleScript_ButItFailed;
        break;
    case EFFECT_FLING:
        if (!CanFling(ctx->battlerAtk))
            battleScript = BattleScript_ButItFailed;
        break;
    case EFFECT_FOLLOW_ME:
        if (B_UPDATED_MOVE_DATA >= GEN_8 && !(gBattleTypeFlags & BATTLE_TYPE_DOUBLE))
            battleScript = BattleScript_ButItFailed;
        break;
    case EFFECT_FUTURE_SIGHT:
        if (gWishFutureKnock.futureSightCounter[ctx->battlerDef] > 0)
            battleScript = BattleScript_ButItFailed;
        break;
    case EFFECT_LAST_RESORT:
        if (!CanUseLastResort(ctx->battlerAtk))
            battleScript = BattleScript_ButItFailed;
        break;
    case EFFECT_NO_RETREAT:
        if (gBattleMons[ctx->battlerDef].volatiles.noRetreat)
            battleScript = BattleScript_ButItFailed;
        break;
    case EFFECT_POLTERGEIST:
        if (gBattleMons[ctx->battlerDef].item == ITEM_NONE
         || gFieldStatuses & STATUS_FIELD_MAGIC_ROOM
         || ctx->abilities[ctx->battlerDef] == ABILITY_KLUTZ)
            battleScript = BattleScript_ButItFailed;
        break;
    case EFFECT_PROTECT:
        // TODO
        break;
    case EFFECT_REST:
        if (gBattleMons[ctx->battlerAtk].status1 & STATUS1_SLEEP
         || ctx->abilities[ctx->battlerAtk] == ABILITY_COMATOSE)
            battleScript = BattleScript_RestIsAlreadyAsleep;
        else if (gBattleMons[ctx->battlerAtk].hp == gBattleMons[ctx->battlerAtk].maxHP)
            battleScript = BattleScript_AlreadyAtFullHp;
        else if (ctx->abilities[ctx->battlerAtk] == ABILITY_INSOMNIA
              || ctx->abilities[ctx->battlerAtk] == ABILITY_VITAL_SPIRIT
              || ctx->abilities[ctx->battlerAtk] == ABILITY_PURIFYING_SALT)
            battleScript = BattleScript_InsomniaProtects;
        break;
    case EFFECT_SUCKER_PUNCH:
        if (HasBattlerActedThisTurn(ctx->battlerDef)
         || (IsBattleMoveStatus(GetChosenMoveFromPosition(ctx->battlerDef)) && !gProtectStructs[ctx->battlerDef].noValidMoves))
            battleScript = BattleScript_ButItFailed;
        break;
    case EFFECT_SNORE:
        if (!(gBattleMons[ctx->battlerAtk].status1 & STATUS1_SLEEP)
         && ctx->abilities[ctx->battlerAtk] != ABILITY_COMATOSE)
            battleScript = BattleScript_ButItFailed;
        break;
    case EFFECT_STEEL_ROLLER:
        if (!(gFieldStatuses & STATUS_FIELD_TERRAIN_ANY))
            battleScript = BattleScript_ButItFailed;
        break;
    case EFFECT_STOCKPILE:
        if (gDisableStructs[ctx->battlerAtk].stockpileCounter >= 3)
            battleScript = BattleScript_ButItFailed;
        break;
    case EFFECT_STUFF_CHEEKS:
        if (GetItemPocket(gBattleMons[ctx->battlerAtk].item) != POCKET_BERRIES)
            battleScript = BattleScript_ButItFailed;
        break;
    case EFFECT_SWALLOW:
    case EFFECT_SPIT_UP:
        if (gDisableStructs[ctx->battlerAtk].stockpileCounter == 0 && !gBattleStruct->snatchedMoveIsUsed)
            battleScript = BattleScript_ButItFailed;
        break;
    case EFFECT_TELEPORT:
        // TODO: follow up: Can't make sense of teleport logic
        break;
    case EFFECT_LOW_KICK:
    case EFFECT_HEAT_CRASH:
        if (GetActiveGimmick(ctx->battlerDef) == GIMMICK_DYNAMAX)
            battleScript = BattleScript_MoveBlockedByDynamax;
        break;
    default:
        break;
    }

    if (battleScript != NULL)
    {
        gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
        gBattlescriptCurrInstr = battleScript;
        return MOVE_STEP_FAILURE;
    }

    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerPowderStatus(struct BattleContext *ctx)
{
    if (TryActivatePowderStatus(ctx->currentMove))
    {
        if (!IsAbilityAndRecord(ctx->battlerAtk, ctx->abilities[ctx->battlerAtk], ABILITY_MAGIC_GUARD))
            SetPassiveDamageAmount(ctx->battlerAtk, GetNonDynamaxMaxHP(ctx->battlerAtk) / 4);

        // This might be incorrect
        if (GetActiveGimmick(ctx->battlerAtk) != GIMMICK_Z_MOVE
         || HasTrainerUsedGimmick(ctx->battlerAtk, GIMMICK_Z_MOVE))
            gBattlescriptCurrInstr = BattleScript_MoveUsedPowder;
        gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
        return MOVE_STEP_BREAK;
    }
    return MOVE_STEP_SUCCESS;
}

bool32 IsDazzlingAbility(enum Ability ability)
{
    switch (ability)
    {
    case ABILITY_DAZZLING:        return TRUE;
    case ABILITY_QUEENLY_MAJESTY: return TRUE;
    case ABILITY_ARMOR_TAIL:      return TRUE;
    default: break;
    }
    return FALSE;
}

static enum MoveCanceler CancelerPriorityBlock(struct BattleContext *ctx)
{
    bool32 effect = FALSE;
    s32 priority = GetChosenMovePriority(ctx->battlerAtk, ctx->abilities[ctx->battlerAtk]);
    u32 blockAbility = ABILITY_NONE; // ability of battler who is blocking
    u32 blockedByBattler = ctx->battlerDef;

    if (priority <= 0 || IsBattlerAlly(ctx->battlerAtk, ctx->battlerDef))
        return MOVE_STEP_SUCCESS;

    if (IsDazzlingAbility(ctx->abilities[ctx->battlerDef]))
    {
        blockAbility = ctx->abilities[ctx->battlerDef];
        effect = TRUE;
    }
    else if (IsDoubleBattle() && IsBattlerAlive(BATTLE_PARTNER(ctx->battlerDef)))
    {
        blockAbility = GetBattlerAbility(BATTLE_PARTNER(ctx->battlerDef));
        if (IsDazzlingAbility(blockAbility))
        {
            blockedByBattler = BATTLE_PARTNER(ctx->battlerDef);
            effect = TRUE;
        }
    }

    if (effect)
    {
        gMultiHitCounter = 0; // Prevent multi-hit moves from hitting more than once after move has been absorbed.
        gLastUsedAbility = blockAbility;
        RecordAbilityBattle(blockedByBattler, blockAbility);
        gBattleScripting.battler = gBattlerAbility = blockedByBattler;
        gBattlescriptCurrInstr = BattleScript_DazzlingProtected;
        gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
        return MOVE_STEP_FAILURE;
    }

    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerProtean(struct BattleContext *ctx)
{
    enum Type moveType = GetBattleMoveType(ctx->currentMove);
    if (ProteanTryChangeType(ctx->battlerAtk, ctx->abilities[ctx->battlerAtk], ctx->currentMove, moveType))
    {
        if (GetGenConfig(GEN_PROTEAN_LIBERO) >= GEN_9)
            gDisableStructs[ctx->battlerAtk].usedProteanLibero = TRUE;
        PREPARE_TYPE_BUFFER(gBattleTextBuff1, moveType);
        gBattlerAbility = ctx->battlerAtk;
        PrepareStringBattle(STRINGID_EMPTYSTRING3, ctx->battlerAtk);
        gBattleCommunication[MSG_DISPLAY] = 1;
        BattleScriptCall(BattleScript_ProteanActivates);
        return MOVE_STEP_BREAK;
    }
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerExplodingDamp(struct BattleContext *ctx)
{
    u32 dampBattler = IsAbilityOnField(ABILITY_DAMP);
    if (dampBattler && IsMoveDampBanned(ctx->currentMove))
    {
        gBattleScripting.battler = dampBattler - 1;
        gBattlescriptCurrInstr = BattleScript_DampStopsExplosion;
        gHitMarker |= HITMARKER_UNABLE_TO_USE_MOVE;
        return MOVE_STEP_FAILURE;
    }
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerMultihitMoves(struct BattleContext *ctx)
{
    if (GetMoveEffect(ctx->currentMove) == EFFECT_MULTI_HIT)
    {
        enum Ability ability = ctx->abilities[ctx->battlerAtk];

        if (ability == ABILITY_SKILL_LINK)
        {
            gMultiHitCounter = 5;
        }
        else if (ability == ABILITY_BATTLE_BOND
              && ctx->currentMove == MOVE_WATER_SHURIKEN
              && gBattleMons[ctx->battlerAtk].species == SPECIES_GRENINJA_ASH)
        {
            gMultiHitCounter = 3;
        }
        else
        {
            SetRandomMultiHitCounter();
        }

        PREPARE_BYTE_NUMBER_BUFFER(gBattleScripting.multihitString, 1, 0)
    }
    else if (GetMoveStrikeCount(ctx->currentMove) > 1)
    {
        if (GetMoveEffect(ctx->currentMove) == EFFECT_POPULATION_BOMB && GetBattlerHoldEffect(ctx->battlerAtk) == HOLD_EFFECT_LOADED_DICE)
        {
            gMultiHitCounter = RandomUniform(RNG_LOADED_DICE, 4, 10);
        }
        else
        {
            gMultiHitCounter = GetMoveStrikeCount(ctx->currentMove);

            if (GetMoveEffect(ctx->currentMove) == EFFECT_DRAGON_DARTS
             && !IsAffectedByFollowMe(ctx->battlerAtk, GetBattlerSide(ctx->battlerDef), ctx->currentMove)
             && CanTargetPartner(ctx->battlerAtk, ctx->battlerDef)
             && TargetFullyImmuneToCurrMove(ctx->battlerAtk, ctx->battlerDef))
                gBattlerTarget = BATTLE_PARTNER(ctx->battlerDef);
        }

        PREPARE_BYTE_NUMBER_BUFFER(gBattleScripting.multihitString, 3, 0)
    }
    else if (B_BEAT_UP >= GEN_5 && GetMoveEffect(ctx->currentMove) == EFFECT_BEAT_UP)
    {
        struct Pokemon* party = GetBattlerParty(ctx->battlerAtk);
        int i;
        gBattleStruct->beatUpSlot = 0;

        for (i = 0; i < PARTY_SIZE; i++)
        {
            u32 species = GetMonData(&party[i], MON_DATA_SPECIES);
            if (species != SPECIES_NONE
             && GetMonData(&party[i], MON_DATA_HP)
             && !GetMonData(&party[i], MON_DATA_IS_EGG)
             && !GetMonData(&party[i], MON_DATA_STATUS))
            {
                gBattleStruct->beatUpSpecies[gBattleStruct->beatUpSlot++] = species;
                gMultiHitCounter++;
            }
        }

        gBattleStruct->beatUpSlot = 0;
        PREPARE_BYTE_NUMBER_BUFFER(gBattleScripting.multihitString, 1, 0)
    }
    else
    {
        gMultiHitCounter = 0;
    }

    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler CancelerMultiTargetMoves(struct BattleContext *ctx)
{
    u32 moveTarget = GetBattlerMoveTargetType(ctx->battlerAtk, ctx->currentMove);
    enum Ability abilityAtk = ctx->abilities[ctx->battlerAtk];

    if (IsSpreadMove(moveTarget))
    {
        for (u32 battlerDef = 0; battlerDef < gBattlersCount; battlerDef++)
        {
            if (gBattleStruct->bouncedMoveIsUsed && !IsOnPlayerSide(battlerDef))
                continue;

            enum Ability abilityDef = GetBattlerAbility(battlerDef);

            if (ctx->battlerAtk == battlerDef
             || !IsBattlerAlive(battlerDef)
             || (GetMoveEffect(ctx->currentMove) == EFFECT_SYNCHRONOISE && !DoBattlersShareType(ctx->battlerAtk, battlerDef))
             || (moveTarget == MOVE_TARGET_BOTH && ctx->battlerAtk == BATTLE_PARTNER(battlerDef))
             || IsBattlerProtected(ctx->battlerAtk, battlerDef, ctx->currentMove)) // Missing Invulnerable check
            {
                gBattleStruct->moveResultFlags[battlerDef] = MOVE_RESULT_NO_EFFECT;
                gBattleStruct->noResultString[battlerDef] = WILL_FAIL;
            }
            else if (CanAbilityBlockMove(ctx->battlerAtk, battlerDef, abilityAtk, abilityDef, ctx->currentMove, CHECK_TRIGGER))
            {
                gBattleStruct->moveResultFlags[battlerDef] = 0;
                gBattleStruct->noResultString[battlerDef] = WILL_FAIL;
            }
            else if (CanAbilityAbsorbMove(ctx->battlerAtk, battlerDef, abilityDef, ctx->currentMove, GetBattleMoveType(gCurrentMove), CHECK_TRIGGER))
            {
                gBattleStruct->moveResultFlags[battlerDef] = 0;
                gBattleStruct->noResultString[battlerDef] = CHECK_ACCURACY;
            }
            else
            {
                CalcTypeEffectivenessMultiplierHelper(ctx->currentMove, GetBattleMoveType(ctx->currentMove), ctx->battlerAtk, battlerDef, abilityAtk, abilityDef, TRUE); // Sets moveResultFlags
                gBattleStruct->noResultString[battlerDef] = CAN_DAMAGE;
            }
        }
        if (moveTarget == MOVE_TARGET_BOTH)
            gBattleStruct->numSpreadTargets = CountAliveMonsInBattle(BATTLE_ALIVE_EXCEPT_BATTLER_SIDE, ctx->battlerAtk);
        else
            gBattleStruct->numSpreadTargets = CountAliveMonsInBattle(BATTLE_ALIVE_EXCEPT_BATTLER, ctx->battlerAtk);
    }
    return MOVE_STEP_SUCCESS;
}

static enum MoveCanceler (*const sMoveSuccessOrderCancelers[])(struct BattleContext *ctx) =
{
    [CANCELER_CLEAR_FLAGS] = CancelerClearFlags,
    [CANCELER_STANCE_CHANGE_1] = CancelerStanceChangeOne,
    [CANCELER_SKY_DROP] = CancelerSkyDrop,
    [CANCELER_RECHARGE] = CancelerRecharge,
    [CANCELER_ASLEEP_OR_FROZEN] = CancelerAsleepOrFrozen,
    [CANCELER_OBEDIENCE] = CancelerObedience,
    [CANCELER_POWER_POINTS] = CancelerPowerPoints,
    [CANCELER_TRUANT] = CancelerTruant,
    [CANCELER_FLINCH] = CancelerFlinch,
    [CANCELER_DISABLED] = CancelerDisabled,
    [CANCELER_VOLATILE_BLOCKED] = CancelerVolatileBlocked,
    [CANCELER_TAUNTED] = CancelerTaunted,
    [CANCELER_IMPRISONED] = CancelerImprisoned,
    [CANCELER_CONFUSED] = CancelerConfused,
    [CANCELER_PARALYSED] = CancelerParalysed,
    [CANCELER_INFATUATION] = CancelerInfatuation,
    [CANCELER_BIDE] = CancelerBide,
    [CANCELER_Z_MOVES] = CancelerZMoves,
    [CANCELER_CHOICE_LOCK] = CancelerChoiceLock,
    [CANCELER_CALLSUBMOVE] = CancelerCallSubmove,
    [CANCELER_THAW] = CancelerThaw,
    [CANCELER_STANCE_CHANGE_2] = CancelerStanceChangeTwo,
    [CANCELER_ATTACKSTRING] = CancelerAttackstring,
    [CANCELER_PPDEDUCTION] = CancelerPPDeduction,
    [CANCELER_WEATHER_PRIMAL] = CancelerWeatherPrimal,
    [CANCELER_MOVE_FAILURE] = CancelerMoveFailure,
    [CANCELER_POWDER_STATUS] = CancelerPowderStatus,
    [CANCELER_PRIORITY_BLOCK] = CancelerPriorityBlock,
    [CANCELER_PROTEAN] = CancelerProtean,
    [CANCELER_EXPLODING_DAMP] = CancelerExplodingDamp,
    [CANCELER_MULTIHIT_MOVES] = CancelerMultihitMoves,
    [CANCELER_MULTI_TARGET_MOVES] = CancelerMultiTargetMoves,
};

enum MoveCanceler AtkCanceler_MoveSuccessOrder(struct BattleContext *ctx)
{
    enum MoveCanceler effect = MOVE_STEP_SUCCESS;

    while (gBattleStruct->eventState.atkCanceler < CANCELER_END && effect == MOVE_STEP_SUCCESS)
    {
        effect = sMoveSuccessOrderCancelers[gBattleStruct->eventState.atkCanceler](ctx);
        gBattleStruct->eventState.atkCanceler++;
    }

    if (effect == MOVE_STEP_REMOVES_STATUS)
    {
        BtlController_EmitSetMonData(
            ctx->battlerAtk,
            B_COMM_TO_CONTROLLER,
            REQUEST_STATUS_BATTLE,
            0,
            4,
            &gBattleMons[gBattlerAttacker].status1);
        MarkBattlerForControllerExec(ctx->battlerAtk);
    }

    return effect;
}

bool32 HasNoMonsToSwitch(u32 battler, u8 partyIdBattlerOn1, u8 partyIdBattlerOn2)
{
    u32 i, playerId, flankId;
    struct Pokemon *party;

    if (!IsDoubleBattle())
        return FALSE;

    bool32 isPlayerside = IsOnPlayerSide(battler);

    if (BATTLE_TWO_VS_ONE_OPPONENT && !isPlayerside)
    {
        flankId = GetBattlerAtPosition(B_POSITION_OPPONENT_LEFT);
        playerId = GetBattlerAtPosition(B_POSITION_OPPONENT_RIGHT);
        party = gEnemyParty;

        // Edge case: If both opposing Pokemon were knocked out on the same turn,
        // make sure opponent only sends out the final Pokemon once.
        if (battler == playerId
         && (gHitMarker & HITMARKER_FAINTED(flankId))
         && (gHitMarker & HITMARKER_FAINTED(playerId)))
        {
            u8 count = 0;
            for (i = 0; i < PARTY_SIZE; i++)
                if (IsValidForBattle(&party[i]))
                    count++;

            if (count < 2)
                return TRUE;
        }

        if (partyIdBattlerOn1 == PARTY_SIZE)
            partyIdBattlerOn1 = gBattlerPartyIndexes[flankId];
        if (partyIdBattlerOn2 == PARTY_SIZE)
            partyIdBattlerOn2 = gBattlerPartyIndexes[playerId];

        for (i = 0; i < PARTY_SIZE; i++)
        {
            if (IsValidForBattle(&party[i])
             && i != partyIdBattlerOn1 && i != partyIdBattlerOn2
             && i != gBattleStruct->monToSwitchIntoId[flankId] && i != playerId[gBattleStruct->monToSwitchIntoId])
                break;
        }
        return (i == PARTY_SIZE);
    }
    else if (gBattleTypeFlags & BATTLE_TYPE_INGAME_PARTNER)
    {
        party = GetBattlerParty(battler);
        if (!isPlayerside && WILD_DOUBLE_BATTLE)
        {
            flankId = GetBattlerAtPosition(B_POSITION_OPPONENT_LEFT);
            playerId = GetBattlerAtPosition(B_POSITION_OPPONENT_RIGHT);

            if (partyIdBattlerOn1 == PARTY_SIZE)
                partyIdBattlerOn1 = gBattlerPartyIndexes[flankId];
            if (partyIdBattlerOn2 == PARTY_SIZE)
                partyIdBattlerOn2 = gBattlerPartyIndexes[playerId];

            for (i = 0; i < PARTY_SIZE; i++)
            {
                if (IsValidForBattle(&party[i])
                 && i != partyIdBattlerOn1 && i != partyIdBattlerOn2
                 && i != gBattleStruct->monToSwitchIntoId[flankId] && i != playerId[gBattleStruct->monToSwitchIntoId])
                    break;
            }
            return (i == PARTY_SIZE);
        }
        else
        {
            playerId = ((battler & BIT_FLANK) / 2);
            for (i = playerId * MULTI_PARTY_SIZE; i < playerId * MULTI_PARTY_SIZE + MULTI_PARTY_SIZE; i++)
            {
                if (IsValidForBattle(&party[i]))
                    break;
            }
            return (i == playerId * MULTI_PARTY_SIZE + MULTI_PARTY_SIZE);
        }
    }
    else if (gBattleTypeFlags & BATTLE_TYPE_MULTI)
    {
        if (gBattleTypeFlags & BATTLE_TYPE_TOWER_LINK_MULTI)
        {
            if (isPlayerside)
            {
                party = gPlayerParty;
                flankId = GetBattlerMultiplayerId(battler);
                playerId = GetLinkTrainerFlankId(flankId);
            }
            else
            {
                party = gEnemyParty;
                if (battler == 1)
                    playerId = 0;
                else
                    playerId = 1;
            }
        }
        else
        {
            flankId = GetBattlerMultiplayerId(battler);
            party = GetBattlerParty(battler);
            playerId = GetLinkTrainerFlankId(flankId);
        }

        for (i = playerId * MULTI_PARTY_SIZE; i < playerId * MULTI_PARTY_SIZE + MULTI_PARTY_SIZE; i++)
        {
            if (IsValidForBattle(&party[i]))
                break;
        }
        return (i == playerId * MULTI_PARTY_SIZE + MULTI_PARTY_SIZE);
    }
    else if ((gBattleTypeFlags & BATTLE_TYPE_TWO_OPPONENTS) && !isPlayerside)
    {
        party = gEnemyParty;

        if (battler == 1)
            playerId = 0;
        else
            playerId = MULTI_PARTY_SIZE;

        for (i = playerId; i < playerId + MULTI_PARTY_SIZE; i++)
        {
            if (IsValidForBattle(&party[i]))
                break;
        }
        return (i == playerId + 3);
    }
    else
    {
        if (!isPlayerside)
        {
            flankId = GetBattlerAtPosition(B_POSITION_OPPONENT_LEFT);
            playerId = GetBattlerAtPosition(B_POSITION_OPPONENT_RIGHT);
            party = gEnemyParty;
        }
        else
        {
            flankId = GetBattlerAtPosition(B_POSITION_PLAYER_LEFT);
            playerId = GetBattlerAtPosition(B_POSITION_PLAYER_RIGHT);
            party = gPlayerParty;
        }

        if (partyIdBattlerOn1 == PARTY_SIZE)
            partyIdBattlerOn1 = gBattlerPartyIndexes[flankId];
        if (partyIdBattlerOn2 == PARTY_SIZE)
            partyIdBattlerOn2 = gBattlerPartyIndexes[playerId];

        for (i = 0; i < PARTY_SIZE; i++)
        {
            if (IsValidForBattle(&party[i])
             && i != partyIdBattlerOn1 && i != partyIdBattlerOn2
             && i != gBattleStruct->monToSwitchIntoId[flankId] && i != playerId[gBattleStruct->monToSwitchIntoId])
                break;
        }
        return (i == PARTY_SIZE);
    }
}

bool32 TryChangeBattleWeather(u32 battler, u32 battleWeatherId, u32 ability)
{
    if (gBattleWeather & sBattleWeatherInfo[battleWeatherId].flag)
    {
        return FALSE;
    }
    else if (gBattleWeather & B_WEATHER_PRIMAL_ANY
          && ability != ABILITY_DESOLATE_LAND
          && ability != ABILITY_PRIMORDIAL_SEA
          && ability != ABILITY_DELTA_STREAM)
    {
        return FALSE;
    }
    else if (GetGenConfig(GEN_CONFIG_ABILITY_WEATHER) < GEN_6 && ability != ABILITY_NONE)
    {
        gBattleWeather = sBattleWeatherInfo[battleWeatherId].flag;
        for (u32 i = 0; i < gBattlersCount; i++)
            gDisableStructs[i].weatherAbilityDone = FALSE;
        return TRUE;
    }
    else
    {
        u32 rock = sBattleWeatherInfo[battleWeatherId].rock;
        gBattleWeather = sBattleWeatherInfo[battleWeatherId].flag;
        if (gBattleWeather & B_WEATHER_PRIMAL_ANY)
            gWishFutureKnock.weatherDuration = 0;
        else if (rock != 0 && GetBattlerHoldEffect(battler) == rock)
            gWishFutureKnock.weatherDuration = 8;
        else
            gWishFutureKnock.weatherDuration = 5;
        for (u32 i = 0; i < gBattlersCount; i++)
            gDisableStructs[i].weatherAbilityDone = FALSE;
        return TRUE;
    }

    return FALSE;
}

bool32 TryChangeBattleTerrain(u32 battler, u32 statusFlag)
{
    if (gBattleStruct->isSkyBattle)
        return FALSE;

    if (!(gFieldStatuses & statusFlag))
    {
        gFieldStatuses &= ~STATUS_FIELD_TERRAIN_ANY;
        gFieldStatuses |= statusFlag;
        for (u32 i = 0; i < gBattlersCount; i++)
            gDisableStructs[i].terrainAbilityDone = FALSE;
        if (GetBattlerHoldEffect(battler) == HOLD_EFFECT_TERRAIN_EXTENDER)
            gFieldTimers.terrainTimer = 8;
        else
            gFieldTimers.terrainTimer = 5;
        gBattleScripting.battler = battler;
        return TRUE;
    }

    return FALSE;
}

static void ForewarnChooseMove(u32 battler)
{
    struct Forewarn {
        u8 battler;
        u8 power;
        u16 moveId;
    };
    u32 i, j, bestId, count;
    struct Forewarn *data = Alloc(sizeof(struct Forewarn) * MAX_BATTLERS_COUNT * MAX_MON_MOVES);

    // Put all moves
    for (count = 0, i = 0; i < MAX_BATTLERS_COUNT; i++)
    {
        if (IsBattlerAlive(i) && !IsBattlerAlly(i, battler))
        {
            for (j = 0; j < MAX_MON_MOVES; j++)
            {
                if (gBattleMons[i].moves[j] == MOVE_NONE)
                    continue;
                data[count].moveId = gBattleMons[i].moves[j];
                data[count].battler = i;
                switch (GetMoveEffect(data[count].moveId))
                {
                case EFFECT_OHKO:
                case EFFECT_SHEER_COLD:
                    data[count].power = 150;
                    break;
                case EFFECT_COUNTER:
                case EFFECT_MIRROR_COAT:
                case EFFECT_METAL_BURST:
                    data[count].power = 120;
                    break;
                default:
                {
                    u32 movePower = GetMovePower(data[count].moveId);
                    if (movePower == 1)
                        data[count].power = 80;
                    else
                        data[count].power = movePower;
                    break;
                }
                }
                count++;
            }
        }
    }

    for (bestId = 0, i = 1; i < count; i++)
    {
        if (data[i].power > data[bestId].power)
            bestId = i;
        else if (data[i].power == data[bestId].power && Random() & 1)
            bestId = i;
    }

    gEffectBattler = data[bestId].battler;
    PREPARE_MOVE_BUFFER(gBattleTextBuff1, data[bestId].moveId)
    RecordKnownMove(data[bestId].battler, data[bestId].moveId);

    Free(data);
}

bool32 ChangeTypeBasedOnTerrain(u32 battler)
{
    enum Type battlerType;

    if (gFieldStatuses & STATUS_FIELD_ELECTRIC_TERRAIN)
        battlerType = TYPE_ELECTRIC;
    else if (gFieldStatuses & STATUS_FIELD_GRASSY_TERRAIN)
        battlerType = TYPE_GRASS;
    else if (gFieldStatuses & STATUS_FIELD_MISTY_TERRAIN)
        battlerType = TYPE_FAIRY;
    else if (gFieldStatuses & STATUS_FIELD_PSYCHIC_TERRAIN)
        battlerType = TYPE_PSYCHIC;
    else // failsafe
        return FALSE;

    SET_BATTLER_TYPE(battler, battlerType);
    PREPARE_TYPE_BUFFER(gBattleTextBuff1, battlerType);
    return TRUE;
}

static inline u8 GetSideFaintCounter(enum BattleSide side)
{
    return (side == B_SIDE_PLAYER) ? gBattleResults.playerFaintCounter : gBattleResults.opponentFaintCounter;
}

static inline u8 GetBattlerSideFaintCounter(u32 battler)
{
    return GetSideFaintCounter(GetBattlerSide(battler));
}

// Supreme Overlord adds a x0.1 damage boost for each fainted ally.
static inline uq4_12_t GetSupremeOverlordModifier(u32 battler)
{
    return UQ_4_12(1.0) + (PercentToUQ4_12(gBattleStruct->supremeOverlordCounter[battler] * 10));
}

bool32 HadMoreThanHalfHpNowDoesnt(u32 battler)
{
    // Had more than half of hp before, now has less
    return gBattleStruct->battlerState[battler].wasAboveHalfHp
        && gBattleMons[battler].hp <= gBattleMons[battler].maxHP / 2;
}

#define ANIM_STAT_HP      0
#define ANIM_STAT_ATK     1
#define ANIM_STAT_DEF     2
#define ANIM_STAT_SPATK   3
#define ANIM_STAT_SPDEF   4
#define ANIM_STAT_SPEED   5
#define ANIM_STAT_ACC     6
#define ANIM_STAT_EVASION 7
void ChooseStatBoostAnimation(u32 battler)
{
    u32 stat;
    bool32 statBuffMoreThan1 = FALSE;
    u32 static const statsOrder[NUM_BATTLE_STATS] =
    {
        [ANIM_STAT_HP]      = STAT_HP,
        [ANIM_STAT_ATK]     = STAT_ATK,
        [ANIM_STAT_DEF]     = STAT_DEF,
        [ANIM_STAT_SPATK]   = STAT_SPATK,
        [ANIM_STAT_SPDEF]   = STAT_SPDEF,
        [ANIM_STAT_SPEED]   = STAT_SPEED,
        [ANIM_STAT_ACC]     = STAT_ACC,
        [ANIM_STAT_EVASION] = STAT_EVASION,
    };
    gBattleScripting.animArg1 = 0;

    for (stat = 1; stat < NUM_BATTLE_STATS; stat++) // Start loop at 1 to avoid STAT_HP
    {
        if ((gQueuedStatBoosts[battler].stats & (1 << statsOrder[stat])) == 0)
            continue;

        if (!statBuffMoreThan1)
            statBuffMoreThan1 = ((gQueuedStatBoosts[battler].stats & (1 << statsOrder[stat])) > 1);

        if (gBattleScripting.animArg1 != 0) // Already set in a different stat so now boosting multiple stats
            gBattleScripting.animArg1 = (statBuffMoreThan1 ? STAT_ANIM_MULTIPLE_PLUS2 : STAT_ANIM_MULTIPLE_PLUS1);
        else
            gBattleScripting.animArg1 = GET_STAT_BUFF_ID((statsOrder[stat] + 1)) + (statBuffMoreThan1 ? STAT_ANIM_PLUS2 : STAT_ANIM_PLUS1);
    }
}
#undef ANIM_STAT_HP
#undef ANIM_STAT_ATK
#undef ANIM_STAT_DEF
#undef ANIM_STAT_SPATK
#undef ANIM_STAT_SPDEF
#undef ANIM_STAT_SPEED
#undef ANIM_STAT_ACC
#undef ANIM_STAT_EVASION

bool32 CanAbilityBlockMove(u32 battlerAtk, u32 battlerDef, enum Ability abilityAtk, enum Ability abilityDef, u32 move, enum FunctionCallOption option)
{
    const u8 *battleScriptBlocksMove = NULL;

    switch (abilityDef)
    {
    case ABILITY_SOUNDPROOF:
        if (IsSoundMove(move) && !(GetBattlerMoveTargetType(battlerAtk, move) & MOVE_TARGET_USER))
            battleScriptBlocksMove = BattleScript_SoundproofProtected;
        break;
    case ABILITY_BULLETPROOF:
        if (IsBallisticMove(move))
            battleScriptBlocksMove = BattleScript_SoundproofProtected;
        break;
    case ABILITY_GOOD_AS_GOLD:
        if (IsBattleMoveStatus(move))
        {
            if (!(GetBattlerMoveTargetType(battlerAtk, move) & (MOVE_TARGET_OPPONENTS_FIELD | MOVE_TARGET_ALL_BATTLERS)))
                battleScriptBlocksMove = BattleScript_GoodAsGoldActivates;
        }
        break;
    default:
        break;
    }

    if (battleScriptBlocksMove == NULL)
    {
        s32 atkPriority = 0;
        if (option == AI_CHECK)
            atkPriority = GetBattleMovePriority(battlerAtk, abilityAtk, move);
        else
            atkPriority = GetChosenMovePriority(battlerAtk, abilityAtk);

        if (atkPriority <= 0)
        {
            // Not a priority move
        }
        else if (IsBattleMoveStatus(move)
              && BlocksPrankster(move, battlerAtk, battlerDef, TRUE)
              && !(IsBattleMoveStatus(move) && (abilityDef == ABILITY_MAGIC_BOUNCE || gProtectStructs[battlerDef].bounceMove)))
        {
            if (option == RUN_SCRIPT && !IsSpreadMove(GetBattlerMoveTargetType(battlerAtk, move)))
                CancelMultiTurnMoves(battlerAtk, SKY_DROP_ATTACKCANCELER_CHECK); // Don't cancel moves that can hit two targets bc one target might not be protected
            battleScriptBlocksMove = BattleScript_DoesntAffectTargetAtkString;
        }
        else if (IsBattlerTerrainAffected(battlerDef, abilityDef, GetBattlerHoldEffect(battlerDef), STATUS_FIELD_PSYCHIC_TERRAIN) // Not an ability but similar conditions
              && !IsBattlerAlly(battlerAtk, battlerDef)
              && GetMoveTarget(move) != MOVE_TARGET_ALL_BATTLERS
              && GetMoveTarget(move) != MOVE_TARGET_OPPONENTS_FIELD)
        {
            battleScriptBlocksMove = BattleScript_MoveUsedPsychicTerrainPrevents;
            if (option == RUN_SCRIPT)
            {
                gMultiHitCounter = 0; // Prevent multi-hit moves from hitting more than once after move has been absorbed.
                if (!IsSpreadMove(GetBattlerMoveTargetType(battlerAtk, move)))
                    CancelMultiTurnMoves(battlerAtk, SKY_DROP_ATTACKCANCELER_CHECK); // Don't cancel moves that can hit two targets bc one target might not be protected
                gBattlescriptCurrInstr = BattleScript_MoveUsedPsychicTerrainPrevents;
                return TRUE; // Early return since we don't want to set remaining values
            }
        }
    }

    if (battleScriptBlocksMove == NULL)
        return FALSE;

    if (option == RUN_SCRIPT)
    {
        gMultiHitCounter = 0; // Prevent multi-hit moves from hitting more than once after move has been absorbed.
        gLastUsedAbility = abilityDef;
        RecordAbilityBattle(battlerDef, abilityDef);
        gBattleScripting.battler = gBattlerAbility = battlerDef;
        gBattlescriptCurrInstr = battleScriptBlocksMove;
    }

    return TRUE;
}

bool32 CanAbilityAbsorbMove(u32 battlerAtk, u32 battlerDef, enum Ability abilityDef, u32 move, enum Type moveType, enum FunctionCallOption option)
{
    enum MoveAbsorbed effect = MOVE_ABSORBED_BY_NO_ABILITY;
    const u8 *battleScript = NULL;
    enum Stat statId = 0;
    u32 statAmount = 1;

    switch (abilityDef)
    {
    default:
        effect = MOVE_ABSORBED_BY_NO_ABILITY;
        break;
    case ABILITY_VOLT_ABSORB:
        if (moveType == TYPE_ELECTRIC && GetBattlerMoveTargetType(battlerAtk, move) != MOVE_TARGET_ALL_BATTLERS)
            effect = MOVE_ABSORBED_BY_DRAIN_HP_ABILITY;
        break;
    case ABILITY_WATER_ABSORB:
    case ABILITY_DRY_SKIN:
        if (moveType == TYPE_WATER)
            effect = MOVE_ABSORBED_BY_DRAIN_HP_ABILITY;
        break;
    case ABILITY_EARTH_EATER:
        if (moveType == TYPE_GROUND)
            effect = MOVE_ABSORBED_BY_DRAIN_HP_ABILITY;
        break;
    case ABILITY_MOTOR_DRIVE:
        if (moveType == TYPE_ELECTRIC && GetBattlerMoveTargetType(battlerAtk, move) != MOVE_TARGET_ALL_BATTLERS)
        {
            effect = MOVE_ABSORBED_BY_STAT_INCREASE_ABILITY;
            statId = STAT_SPEED;
        }
        break;
    case ABILITY_LIGHTNING_ROD:
        if (B_REDIRECT_ABILITY_IMMUNITY >= GEN_5 && moveType == TYPE_ELECTRIC && GetBattlerMoveTargetType(battlerAtk, move) != MOVE_TARGET_ALL_BATTLERS)
        {
            effect = MOVE_ABSORBED_BY_STAT_INCREASE_ABILITY;
            statId = STAT_SPATK;
        }
        break;
    case ABILITY_STORM_DRAIN:
        if (B_REDIRECT_ABILITY_IMMUNITY >= GEN_5 && moveType == TYPE_WATER)
        {
            effect = MOVE_ABSORBED_BY_STAT_INCREASE_ABILITY;
            statId = STAT_SPATK;
        }
        break;
    case ABILITY_SAP_SIPPER:
        if (moveType == TYPE_GRASS)
        {
            effect = MOVE_ABSORBED_BY_STAT_INCREASE_ABILITY;
            statId = STAT_ATK;
        }
        break;
    case ABILITY_WELL_BAKED_BODY:
        if (moveType == TYPE_FIRE)
        {
            effect = MOVE_ABSORBED_BY_STAT_INCREASE_ABILITY;
            statAmount = 2;
            statId = STAT_DEF;
        }
        break;
    case ABILITY_WIND_RIDER:
        if (IsWindMove(move) && !(GetBattlerMoveTargetType(battlerAtk, move) & MOVE_TARGET_USER))
        {
            effect = MOVE_ABSORBED_BY_STAT_INCREASE_ABILITY;
            statId = STAT_ATK;
        }
        break;
    case ABILITY_FLASH_FIRE:
        if (moveType == TYPE_FIRE && (B_FLASH_FIRE_FROZEN >= GEN_5 || !(gBattleMons[battlerDef].status1 & STATUS1_FREEZE)))
            effect = MOVE_ABSORBED_BY_BOOST_FLASH_FIRE;
        break;
    }

    if (effect == MOVE_ABSORBED_BY_NO_ABILITY || option != RUN_SCRIPT)
        return effect;

    switch (effect)
    {
    default:
        return FALSE;
    case MOVE_ABSORBED_BY_DRAIN_HP_ABILITY:
        gBattleStruct->pledgeMove = FALSE;
        if (IsBattlerAtMaxHp(battlerDef) || (B_HEAL_BLOCKING >= GEN_5 && gBattleMons[battlerDef].volatiles.healBlock))
        {
            battleScript = BattleScript_MonMadeMoveUseless;
        }
        else
        {
            battleScript = BattleScript_MoveHPDrain;
            SetHealAmount(battlerDef, GetNonDynamaxMaxHP(battlerDef) / 4);
        }
        break;
    case MOVE_ABSORBED_BY_STAT_INCREASE_ABILITY:
        gBattleStruct->pledgeMove = FALSE;
        if (!CompareStat(battlerDef, statId, MAX_STAT_STAGE, CMP_LESS_THAN, abilityDef))
        {
            battleScript = BattleScript_MonMadeMoveUseless;
        }
        else
        {
            battleScript = BattleScript_MoveStatDrain;
            SET_STATCHANGER(statId, statAmount, FALSE);
            if (B_ABSORBING_ABILITY_STRING < GEN_5)
                PREPARE_STAT_BUFFER(gBattleTextBuff1, statId);
        }
        break;
    case MOVE_ABSORBED_BY_BOOST_FLASH_FIRE:
        gBattleStruct->pledgeMove = FALSE;
        if (!gDisableStructs[battlerDef].flashFireBoosted)
        {
            gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_FLASH_FIRE_BOOST;
            battleScript = BattleScript_FlashFireBoost;
            gDisableStructs[battlerDef].flashFireBoosted = TRUE;
        }
        else
        {
            gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_FLASH_FIRE_NO_BOOST;
            battleScript = BattleScript_FlashFireBoost;
        }
        break;
    }

    if (battleScript != NULL)
    {
        gMultiHitCounter = 0;   // Prevent multi-hit moves from hitting more than once after move has been absorbed.
        gLastUsedAbility = abilityDef;
        RecordAbilityBattle(battlerDef, abilityDef);
        gBattleScripting.battler = gBattlerAbility = battlerDef;
        gBattlescriptCurrInstr = battleScript;
    }

    return effect;
}

static inline bool32 SetStartingFieldStatus(u32 flag, u32 message, u32 anim, u16 *timer)
{
    if (!(gFieldStatuses & flag))
    {
        gBattleCommunication[MULTISTRING_CHOOSER] = message;
        gFieldStatuses |= flag;
        gBattleScripting.animArg1 = anim;
        if (gBattleStruct->startingStatusTimer)
            *timer = gBattleStruct->startingStatusTimer;
        else
            *timer = 0; // Infinite

        return TRUE;
    }

    return FALSE;
}

static inline bool32 SetStartingSideStatus(u32 flag, u32 side, u32 message, u32 anim, u16 *timer)
{
    if (!(gSideStatuses[side] & flag))
    {
        gBattlerAttacker = gBattlerTarget = side;
        gBattleCommunication[MULTISTRING_CHOOSER] = message;
        gSideStatuses[side] |= flag;
        gBattleScripting.animArg1 = anim;
        if (gBattleStruct->startingStatusTimer)
            *timer = gBattleStruct->startingStatusTimer;
        else
            *timer = 0; // Infinite

        return TRUE;
    }

    return FALSE;
}

bool32 TryFieldEffects(enum FieldEffectCases caseId)
{
    bool32 effect = FALSE;
    bool32 isTerrain = FALSE;

    if (gBattleTypeFlags & BATTLE_TYPE_SAFARI)
        return FALSE;

    switch (caseId)
    {
    case FIELD_EFFECT_TRAINER_STATUSES:  // starting field/side/etc statuses with a variable
        switch ((enum StartingStatus) gBattleStruct->startingStatus)
        {
        case STARTING_STATUS_NONE:
            break;
        case STARTING_STATUS_ELECTRIC_TERRAIN:
            effect = SetStartingFieldStatus(
                        STATUS_FIELD_ELECTRIC_TERRAIN,
                        B_MSG_TERRAIN_SET_ELECTRIC,
                        0,
                        &gFieldTimers.terrainTimer);
            isTerrain = TRUE;
            break;
        case STARTING_STATUS_MISTY_TERRAIN:
            effect = SetStartingFieldStatus(
                        STATUS_FIELD_MISTY_TERRAIN,
                        B_MSG_TERRAIN_SET_MISTY,
                        0,
                        &gFieldTimers.terrainTimer);
            isTerrain = TRUE;
            break;
        case STARTING_STATUS_GRASSY_TERRAIN:
            effect = SetStartingFieldStatus(
                        STATUS_FIELD_GRASSY_TERRAIN,
                        B_MSG_TERRAIN_SET_GRASSY,
                        0,
                        &gFieldTimers.terrainTimer);
            isTerrain = TRUE;
            break;
        case STARTING_STATUS_PSYCHIC_TERRAIN:
            effect = SetStartingFieldStatus(
                        STATUS_FIELD_PSYCHIC_TERRAIN,
                        B_MSG_TERRAIN_SET_PSYCHIC,
                        0,
                        &gFieldTimers.terrainTimer);
            isTerrain = TRUE;
            break;
        case STARTING_STATUS_TRICK_ROOM:
            effect = SetStartingFieldStatus(
                        STATUS_FIELD_TRICK_ROOM,
                        B_MSG_SET_TRICK_ROOM,
                        B_ANIM_TRICK_ROOM,
                        &gFieldTimers.trickRoomTimer);
            break;
        case STARTING_STATUS_MAGIC_ROOM:
            effect = SetStartingFieldStatus(
                        STATUS_FIELD_MAGIC_ROOM,
                        B_MSG_SET_MAGIC_ROOM,
                        B_ANIM_MAGIC_ROOM,
                        &gFieldTimers.magicRoomTimer);
            break;
        case STARTING_STATUS_WONDER_ROOM:
            effect = SetStartingFieldStatus(
                        STATUS_FIELD_WONDER_ROOM,
                        B_MSG_SET_WONDER_ROOM,
                        B_ANIM_WONDER_ROOM,
                        &gFieldTimers.wonderRoomTimer);
            break;
        case STARTING_STATUS_TAILWIND_PLAYER:
            effect = SetStartingSideStatus(
                        SIDE_STATUS_TAILWIND,
                        B_SIDE_PLAYER,
                        B_MSG_SET_TAILWIND,
                        B_ANIM_TAILWIND,
                        &gSideTimers[B_SIDE_PLAYER].tailwindTimer);
            break;
        case STARTING_STATUS_TAILWIND_OPPONENT:
            effect = SetStartingSideStatus(
                        SIDE_STATUS_TAILWIND,
                        B_SIDE_OPPONENT,
                        B_MSG_SET_TAILWIND,
                        B_ANIM_TAILWIND,
                        &gSideTimers[B_SIDE_OPPONENT].tailwindTimer);
            break;
        case STARTING_STATUS_RAINBOW_PLAYER:
            effect = SetStartingSideStatus(
                        SIDE_STATUS_RAINBOW,
                        B_SIDE_PLAYER,
                        B_MSG_SET_RAINBOW,
                        B_ANIM_RAINBOW,
                        &gSideTimers[B_SIDE_PLAYER].rainbowTimer);
            break;
        case STARTING_STATUS_RAINBOW_OPPONENT:
            effect = SetStartingSideStatus(
                        SIDE_STATUS_RAINBOW,
                        B_SIDE_OPPONENT,
                        B_MSG_SET_RAINBOW,
                        B_ANIM_RAINBOW,
                        &gSideTimers[B_SIDE_OPPONENT].rainbowTimer);
            break;
        case STARTING_STATUS_SEA_OF_FIRE_PLAYER:
            effect = SetStartingSideStatus(
                        SIDE_STATUS_SEA_OF_FIRE,
                        B_SIDE_PLAYER,
                        B_MSG_SET_SEA_OF_FIRE,
                        B_ANIM_SEA_OF_FIRE,
                        &gSideTimers[B_SIDE_PLAYER].seaOfFireTimer);
            break;
        case STARTING_STATUS_SEA_OF_FIRE_OPPONENT:
            effect = SetStartingSideStatus(
                        SIDE_STATUS_SEA_OF_FIRE,
                        B_SIDE_OPPONENT,
                        B_MSG_SET_SEA_OF_FIRE,
                        B_ANIM_SEA_OF_FIRE,
                        &gSideTimers[B_SIDE_OPPONENT].seaOfFireTimer);
            break;
        case STARTING_STATUS_SWAMP_PLAYER:
            effect = SetStartingSideStatus(
                        SIDE_STATUS_SWAMP,
                        B_SIDE_PLAYER,
                        B_MSG_SET_SWAMP,
                        B_ANIM_SWAMP,
                        &gSideTimers[B_SIDE_PLAYER].swampTimer);
            break;
        case STARTING_STATUS_SWAMP_OPPONENT:
            effect = SetStartingSideStatus(
                        SIDE_STATUS_SWAMP,
                        B_SIDE_OPPONENT,
                        B_MSG_SET_SWAMP,
                        B_ANIM_SWAMP,
                        &gSideTimers[B_SIDE_OPPONENT].swampTimer);
            break;
        }
        if (effect)
        {
            if (isTerrain)
                BattleScriptPushCursorAndCallback(BattleScript_OverworldTerrain);
            else
                BattleScriptPushCursorAndCallback(BattleScript_OverworldStatusStarts);
        }
        break;
    case FIELD_EFFECT_OVERWORLD_TERRAIN:   // terrain starting from overworld weather
        if (B_THUNDERSTORM_TERRAIN == TRUE
         && !(gFieldStatuses & STATUS_FIELD_ELECTRIC_TERRAIN)
         && GetCurrentWeather() == WEATHER_RAIN_THUNDERSTORM)
        {
            // overworld weather started rain, so just do electric terrain anim
            gFieldStatuses = STATUS_FIELD_ELECTRIC_TERRAIN;
            gFieldTimers.terrainTimer = 0;
            gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_TERRAIN_SET_ELECTRIC;
            BattleScriptPushCursorAndCallback(BattleScript_OverworldTerrain);
            effect = TRUE;
        }
        else if (B_OVERWORLD_FOG >= GEN_8
              && (GetCurrentWeather() == WEATHER_FOG_HORIZONTAL || GetCurrentWeather() == WEATHER_FOG_DIAGONAL)
              && !(gFieldStatuses & STATUS_FIELD_MISTY_TERRAIN))
        {
            gFieldStatuses = STATUS_FIELD_MISTY_TERRAIN;
            gFieldTimers.terrainTimer = 0;
            gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_TERRAIN_SET_MISTY;
            BattleScriptPushCursorAndCallback(BattleScript_OverworldTerrain);
            effect = TRUE;
        }
        break;
    case FIELD_EFFECT_OVERWORLD_WEATHER:
        if (!(gBattleTypeFlags & BATTLE_TYPE_RECORDED))
        {
            switch (GetCurrentWeather())
            {
            case WEATHER_RAIN:
            case WEATHER_RAIN_THUNDERSTORM:
            case WEATHER_DOWNPOUR:
                if (!(gBattleWeather & B_WEATHER_RAIN))
                {
                    gBattleWeather = B_WEATHER_RAIN_NORMAL;
                    gBattleScripting.animArg1 = B_ANIM_RAIN_CONTINUES;
                    effect = TRUE;
                }
                break;
            case WEATHER_SANDSTORM:
                if (!(gBattleWeather & B_WEATHER_SANDSTORM))
                {
                    gBattleWeather = B_WEATHER_SANDSTORM;
                    gBattleScripting.animArg1 = B_ANIM_SANDSTORM_CONTINUES;
                    effect = TRUE;
                }
                break;
            case WEATHER_DROUGHT:
                if (!(gBattleWeather & B_WEATHER_SUN))
                {
                    gBattleWeather = B_WEATHER_SUN_NORMAL;
                    gBattleScripting.animArg1 = B_ANIM_SUN_CONTINUES;
                    effect = TRUE;
                }
                break;
            case WEATHER_SNOW:
                if (!(gBattleWeather & (B_WEATHER_HAIL | B_WEATHER_SNOW)))
                {
                    if (B_OVERWORLD_SNOW >= GEN_9)
                    {
                        gBattleWeather = B_WEATHER_SNOW;
                        gBattleScripting.animArg1 = B_ANIM_SNOW_CONTINUES;
                    }
                    else
                    {
                        gBattleWeather = B_WEATHER_HAIL;
                        gBattleScripting.animArg1 = B_ANIM_HAIL_CONTINUES;
                    }
                    effect = TRUE;
                }
                break;
            case WEATHER_FOG_DIAGONAL:
            case WEATHER_FOG_HORIZONTAL:
                if (B_OVERWORLD_FOG == GEN_4 && !(gBattleWeather & B_WEATHER_FOG))
                {
                    gBattleWeather = B_WEATHER_FOG;
                    gBattleScripting.animArg1 = B_ANIM_FOG_CONTINUES;
                    effect = TRUE;
                }
                break;
            }
        }
        if (effect)
        {
            gBattleCommunication[MULTISTRING_CHOOSER] = GetCurrentWeather();
            BattleScriptPushCursorAndCallback(BattleScript_OverworldWeatherStarts);
        }
        break;
    }

    return effect;
}

u32 AbilityBattleEffects(enum AbilityEffect caseID, u32 battler, enum Ability ability, u32 special, u32 moveArg)
{
    u32 effect = 0;
    enum Type moveType = 0;
    u32 move = 0;
    u32 side = 0;
    u32 i = 0, j = 0;
    u32 partner = 0;

    if (gBattleTypeFlags & BATTLE_TYPE_SAFARI)
        return 0;

    if (gBattlerAttacker >= gBattlersCount)
        gBattlerAttacker = battler;

    if (special)
        gLastUsedAbility = special;
    else if (ability)
        gLastUsedAbility = ability;
    else
        gLastUsedAbility = GetBattlerAbility(battler);

    if (moveArg)
        move = moveArg;
    else
        move = gCurrentMove;

    moveType = GetBattleMoveType(move);

    switch (caseID)
    {
    case ABILITYEFFECT_ON_SWITCHIN:
        gBattleScripting.battler = battler;
        switch (gLastUsedAbility)
        {
        case ABILITY_TRACE:
            {
                u32 chosenTarget;
                u32 target1;
                u32 target2;

                if (gSpecialStatuses[battler].switchInAbilityDone)
                    break;
                if (GetBattlerHoldEffectIgnoreAbility(battler) == HOLD_EFFECT_ABILITY_SHIELD)
                    break;

                side = (BATTLE_OPPOSITE(GetBattlerPosition(battler))) & BIT_SIDE;
                target1 = GetBattlerAtPosition(side);
                target2 = GetBattlerAtPosition(side + BIT_FLANK);
                if (IsDoubleBattle())
                {
                    if (!gAbilitiesInfo[gBattleMons[target1].ability].cantBeTraced && gBattleMons[target1].hp != 0
                        && !gAbilitiesInfo[gBattleMons[target2].ability].cantBeTraced && gBattleMons[target2].hp != 0)
                        chosenTarget = GetBattlerAtPosition((RandomPercentage(RNG_TRACE, 50) * 2) | side), effect++;
                    else if (!gAbilitiesInfo[gBattleMons[target1].ability].cantBeTraced && gBattleMons[target1].hp != 0)
                        chosenTarget = target1, effect++;
                    else if (!gAbilitiesInfo[gBattleMons[target2].ability].cantBeTraced && gBattleMons[target2].hp != 0)
                        chosenTarget = target2, effect++;
                }
                else
                {
                    if (!gAbilitiesInfo[gBattleMons[target1].ability].cantBeTraced && gBattleMons[target1].hp != 0)
                        chosenTarget = target1, effect++;
                }

                if (effect != 0)
                {
                    BattleScriptPushCursorAndCallback(BattleScript_TraceActivates);
                    gBattleStruct->tracedAbility[battler] = gLastUsedAbility = gBattleMons[chosenTarget].ability;
                    RecordAbilityBattle(chosenTarget, gLastUsedAbility); // Record the opposing battler has this ability
                    PREPARE_MON_NICK_WITH_PREFIX_LOWER_BUFFER(gBattleTextBuff1, chosenTarget, gBattlerPartyIndexes[chosenTarget])
                    PREPARE_ABILITY_BUFFER(gBattleTextBuff2, gLastUsedAbility)
                }
            }
            break;
        case ABILITY_IMPOSTER:
            {
                u32 diagonalBattler = BATTLE_OPPOSITE(battler);
                if (IsDoubleBattle())
                    diagonalBattler = BATTLE_PARTNER(diagonalBattler);

                // Imposter only activates when the battler first switches in
                if (gDisableStructs[battler].isFirstTurn == 2
                    && !gDisableStructs[battler].overwrittenAbility
                    && IsBattlerAlive(diagonalBattler)
                    && !gBattleMons[diagonalBattler].volatiles.substitute
                    && !gBattleMons[diagonalBattler].volatiles.transformed
                    && !gBattleMons[battler].volatiles.transformed
                    && gBattleStruct->illusion[diagonalBattler].state != ILLUSION_ON
                    && !IsSemiInvulnerable(diagonalBattler, EXCLUDE_COMMANDER))
                {
                    SaveBattlerAttacker(gBattlerAttacker);
                    SaveBattlerTarget(gBattlerTarget);
                    gBattlerAttacker = battler;
                    gBattlerTarget = diagonalBattler;
                    BattleScriptPushCursorAndCallback(BattleScript_ImposterActivates);
                    effect++;
                }
            }
            break;
        case ABILITY_MOLD_BREAKER:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_SWITCHIN_MOLDBREAKER;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_SwitchInAbilityMsg);
                effect++;
            }
            break;
        case ABILITY_TERAVOLT:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_SWITCHIN_TERAVOLT;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_SwitchInAbilityMsg);
                effect++;
            }
            break;
        case ABILITY_TURBOBLAZE:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_SWITCHIN_TURBOBLAZE;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_SwitchInAbilityMsg);
                effect++;
            }
            break;
        case ABILITY_SLOW_START:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                gDisableStructs[battler].slowStartTimer = 5;
                gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_SWITCHIN_SLOWSTART;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_SwitchInAbilityMsg);
                effect++;
            }
            break;
        case ABILITY_UNNERVE:
            if (!gSpecialStatuses[battler].switchInAbilityDone && !gDisableStructs[battler].unnerveActivated)
            {
                gEffectBattler = GetOppositeBattler(battler);
                gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_SWITCHIN_UNNERVE;
                gDisableStructs[battler].unnerveActivated = TRUE;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_SwitchInAbilityMsg);
                effect++;
            }
            break;
        case ABILITY_AS_ONE_ICE_RIDER:
        case ABILITY_AS_ONE_SHADOW_RIDER:
            if (!gSpecialStatuses[battler].switchInAbilityDone && !gDisableStructs[battler].unnerveActivated)
            {
                gEffectBattler = GetOppositeBattler(battler);
                gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_SWITCHIN_ASONE;
                gDisableStructs[battler].unnerveActivated = TRUE;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_ActivateAsOne);
                effect++;
            }
            break;
        case ABILITY_CURIOUS_MEDICINE:
            if (!gSpecialStatuses[battler].switchInAbilityDone && IsDoubleBattle()
              && IsBattlerAlive(BATTLE_PARTNER(battler)) && TryResetBattlerStatChanges(BATTLE_PARTNER(battler)))
            {
                gEffectBattler = BATTLE_PARTNER(battler);
                gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_SWITCHIN_CURIOUS_MEDICINE;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_SwitchInAbilityMsg);
                effect++;
            }
            break;
        case ABILITY_PASTEL_VEIL:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                SaveBattlerTarget(gBattlerTarget);
                gBattlerTarget = battler;
                gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_SWITCHIN_PASTEL_VEIL;
                BattleScriptPushCursorAndCallback(BattleScript_PastelVeilActivates);
                effect++;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
            }
            break;
        case ABILITY_ANTICIPATION:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                struct DamageContext ctx = {0};
                uq4_12_t modifier = UQ_4_12(1.0);
                for (i = 0; i < MAX_BATTLERS_COUNT; i++)
                {
                    if (IsBattlerAlive(i) && !IsBattlerAlly(i, battler))
                    {
                        for (j = 0; j < MAX_MON_MOVES; j++)
                        {
                            move = gBattleMons[i].moves[j];
                            enum BattleMoveEffects moveEffect = GetMoveEffect(move);
                            moveType = GetBattleMoveType(move);

                            ctx.battlerAtk = i;
                            ctx.battlerDef = battler;
                            ctx.move = ctx.chosenMove = move;
                            ctx.moveType = moveType;
                            ctx.isAnticipation = TRUE;
                            modifier = CalcTypeEffectivenessMultiplier(&ctx);

                            if (modifier >= UQ_4_12(2.0)
                             || moveEffect == EFFECT_OHKO
                             || moveEffect == EFFECT_SHEER_COLD)
                            {
                                effect++;
                                break;
                            }
                        }
                    }
                }

                if (effect != 0)
                {
                    gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_SWITCHIN_ANTICIPATION;
                    gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                    BattleScriptPushCursorAndCallback(BattleScript_SwitchInAbilityMsg);
                }
            }
            break;
        case ABILITY_FRISK:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_FriskActivates); // Try activate
                effect++;
            }
            return effect; // Note: It returns effect as to not record the ability if Frisk does not activate.
        case ABILITY_FOREWARN:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                ForewarnChooseMove(battler);
                gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_SWITCHIN_FOREWARN;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_SwitchInAbilityMsg);
                effect++;
            }
            break;
        case ABILITY_DOWNLOAD:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                enum Stat statId;
                u32 opposingBattler;
                u32 opposingDef = 0, opposingSpDef = 0;

                opposingBattler = BATTLE_OPPOSITE(battler);
                for (i = 0; i < 2; opposingBattler ^= BIT_FLANK, i++)
                {
                    if (IsBattlerAlive(opposingBattler))
                    {
                        opposingDef += gBattleMons[opposingBattler].defense
                                    * gStatStageRatios[gBattleMons[opposingBattler].statStages[STAT_DEF]][0]
                                    / gStatStageRatios[gBattleMons[opposingBattler].statStages[STAT_DEF]][1];
                        opposingSpDef += gBattleMons[opposingBattler].spDefense
                                      * gStatStageRatios[gBattleMons[opposingBattler].statStages[STAT_SPDEF]][0]
                                      / gStatStageRatios[gBattleMons[opposingBattler].statStages[STAT_SPDEF]][1];
                    }
                }

                if (opposingDef < opposingSpDef)
                    statId = STAT_ATK;
                else
                    statId = STAT_SPATK;

                gSpecialStatuses[battler].switchInAbilityDone = TRUE;

                if (CompareStat(battler, statId, MAX_STAT_STAGE, CMP_LESS_THAN, gLastUsedAbility))
                {
                    SET_STATCHANGER(statId, 1, FALSE);
                    SaveBattlerAttacker(gBattlerAttacker);
                    gBattlerAttacker = battler;
                    PREPARE_STAT_BUFFER(gBattleTextBuff1, statId);
                    BattleScriptPushCursorAndCallback(BattleScript_AttackerAbilityStatRaiseEnd3);
                    effect++;
                }
            }
            break;
        case ABILITY_PRESSURE:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_SWITCHIN_PRESSURE;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_SwitchInAbilityMsg);
                effect++;
            }
            break;
        case ABILITY_DARK_AURA:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_SWITCHIN_DARKAURA;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_SwitchInAbilityMsg);
                effect++;
            }
            break;
        case ABILITY_FAIRY_AURA:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_SWITCHIN_FAIRYAURA;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_SwitchInAbilityMsg);
                effect++;
            }
            break;
        case ABILITY_AURA_BREAK:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_SWITCHIN_AURABREAK;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_SwitchInAbilityMsg);
                effect++;
            }
            break;
        case ABILITY_COMATOSE:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_SWITCHIN_COMATOSE;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_SwitchInAbilityMsg);
                effect++;
            }
            break;
        case ABILITY_SCREEN_CLEANER:
            if (!gSpecialStatuses[battler].switchInAbilityDone && TryRemoveScreens(battler))
            {
                gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_SWITCHIN_SCREENCLEANER;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_SwitchInAbilityMsg);
                effect++;
            }
            break;
        case ABILITY_DRIZZLE:
            if (TryChangeBattleWeather(battler, BATTLE_WEATHER_RAIN, gLastUsedAbility))
            {
                BattleScriptPushCursorAndCallback(BattleScript_DrizzleActivates);
                effect++;
            }
            else if (gBattleWeather & B_WEATHER_PRIMAL_ANY && HasWeatherEffect() && !gSpecialStatuses[battler].switchInAbilityDone)
            {
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_BlockedByPrimalWeatherEnd3);
                effect++;
            }
            break;
        case ABILITY_SAND_STREAM:
            if (TryChangeBattleWeather(battler, BATTLE_WEATHER_SANDSTORM, gLastUsedAbility))
            {
                BattleScriptPushCursorAndCallback(BattleScript_SandstreamActivates);
                effect++;
            }
            else if (gBattleWeather & B_WEATHER_PRIMAL_ANY && HasWeatherEffect() && !gSpecialStatuses[battler].switchInAbilityDone)
            {
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_BlockedByPrimalWeatherEnd3);
                effect++;
            }
            break;
        case ABILITY_ORICHALCUM_PULSE:
        case ABILITY_DROUGHT:
            if (TryChangeBattleWeather(battler, BATTLE_WEATHER_SUN, gLastUsedAbility))
            {
                BattleScriptPushCursorAndCallback(BattleScript_DroughtActivates);
                effect++;
            }
            else if (gBattleWeather & B_WEATHER_PRIMAL_ANY && HasWeatherEffect() && !gSpecialStatuses[battler].switchInAbilityDone)
            {
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_BlockedByPrimalWeatherEnd3);
                effect++;
            }
            break;
        case ABILITY_SNOW_WARNING:
            if (GetGenConfig(GEN_SNOW_WARNING) >= GEN_9 && TryChangeBattleWeather(battler, BATTLE_WEATHER_SNOW, gLastUsedAbility))
            {
                BattleScriptPushCursorAndCallback(BattleScript_SnowWarningActivatesSnow);
                effect++;
            }
            else if (GetGenConfig(GEN_SNOW_WARNING) < GEN_9 && TryChangeBattleWeather(battler, BATTLE_WEATHER_HAIL, gLastUsedAbility))
            {
                BattleScriptPushCursorAndCallback(BattleScript_SnowWarningActivatesHail);
                effect++;
            }
            else if (gBattleWeather & B_WEATHER_PRIMAL_ANY && HasWeatherEffect() && !gSpecialStatuses[battler].switchInAbilityDone)
            {
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_BlockedByPrimalWeatherEnd3);
                effect++;
            }
            break;
        case ABILITY_ELECTRIC_SURGE:
        case ABILITY_HADRON_ENGINE:
            if (TryChangeBattleTerrain(battler, STATUS_FIELD_ELECTRIC_TERRAIN))
            {
                BattleScriptPushCursorAndCallback(BattleScript_ElectricSurgeActivates);
                effect++;
            }
            break;
        case ABILITY_GRASSY_SURGE:
            if (TryChangeBattleTerrain(battler, STATUS_FIELD_GRASSY_TERRAIN))
            {
                BattleScriptPushCursorAndCallback(BattleScript_GrassySurgeActivates);
                effect++;
            }
            break;
        case ABILITY_MISTY_SURGE:
            if (TryChangeBattleTerrain(battler, STATUS_FIELD_MISTY_TERRAIN))
            {
                BattleScriptPushCursorAndCallback(BattleScript_MistySurgeActivates);
                effect++;
            }
            break;
        case ABILITY_PSYCHIC_SURGE:
            if (TryChangeBattleTerrain(battler, STATUS_FIELD_PSYCHIC_TERRAIN))
            {
                BattleScriptPushCursorAndCallback(BattleScript_PsychicSurgeActivates);
                effect++;
            }
            break;
        case ABILITY_INTIMIDATE:
            if (!gSpecialStatuses[battler].switchInAbilityDone && !IsOpposingSideEmpty(battler))
            {
                SaveBattlerAttacker(gBattlerAttacker);
                gBattlerAttacker = battler;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                SET_STATCHANGER(STAT_ATK, 1, TRUE);
                BattleScriptPushCursorAndCallback(BattleScript_IntimidateActivates);
                effect++;
            }
            break;
        case ABILITY_SUPERSWEET_SYRUP:
            if (!gSpecialStatuses[battler].switchInAbilityDone
             && !GetBattlerPartyState(battler)->supersweetSyrup
             && !IsOpposingSideEmpty(battler))
            {
                SaveBattlerAttacker(gBattlerAttacker);
                gBattlerAttacker = battler;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                GetBattlerPartyState(battler)->supersweetSyrup = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_SupersweetSyrupActivates);
                effect++;
            }
            break;
        case ABILITY_CLOUD_NINE:
        case ABILITY_AIR_LOCK:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_AnnounceAirLockCloudNine);
                effect++;
            }
            break;
        case ABILITY_TERAFORM_ZERO:
            if (!gSpecialStatuses[battler].switchInAbilityDone
             && gBattleMons[battler].species == SPECIES_TERAPAGOS_STELLAR)
            {
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_ActivateTeraformZero);
                effect++;
            }
            break;
        case ABILITY_SCHOOLING:
            if (gBattleMons[battler].level < 20)
                break;
        // Fallthrough
        case ABILITY_ZEN_MODE:
        case ABILITY_SHIELDS_DOWN:
            if (TryBattleFormChange(battler, FORM_CHANGE_BATTLE_HP_PERCENT))
            {
                BattleScriptPushCursorAndCallback(BattleScript_BattlerFormChangeEnd3);
                effect++;
            }
            break;
        case ABILITY_INTREPID_SWORD:
            if (!gSpecialStatuses[battler].switchInAbilityDone
             && !GetBattlerPartyState(battler)->intrepidSwordBoost)
            {
                if (GetGenConfig(GEN_INTREPID_SWORD) == GEN_9)
                    GetBattlerPartyState(battler)->intrepidSwordBoost = TRUE;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                if (CompareStat(battler, STAT_ATK, MAX_STAT_STAGE, CMP_LESS_THAN, gLastUsedAbility))
                {
                    SET_STATCHANGER(STAT_ATK, 1, FALSE);
                    BattleScriptPushCursorAndCallback(BattleScript_BattlerAbilityStatRaiseOnSwitchIn);
                    effect++;
                }
            }
            break;
        case ABILITY_DAUNTLESS_SHIELD:
            if (!gSpecialStatuses[battler].switchInAbilityDone
             && !GetBattlerPartyState(battler)->dauntlessShieldBoost)
            {
                if (GetGenConfig(GEN_DAUNTLESS_SHIELD) == GEN_9)
                    GetBattlerPartyState(battler)->dauntlessShieldBoost = TRUE;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                if (CompareStat(battler, STAT_DEF, MAX_STAT_STAGE, CMP_LESS_THAN, gLastUsedAbility))
                {
                    SET_STATCHANGER(STAT_DEF, 1, FALSE);
                    BattleScriptPushCursorAndCallback(BattleScript_BattlerAbilityStatRaiseOnSwitchIn);
                    effect++;
                }
            }
            break;
        case ABILITY_WIND_RIDER:
            if (!gSpecialStatuses[battler].switchInAbilityDone
             && CompareStat(battler, STAT_ATK, MAX_STAT_STAGE, CMP_LESS_THAN, gLastUsedAbility)
             && gSideStatuses[GetBattlerSide(battler)] & SIDE_STATUS_TAILWIND)
            {
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                SET_STATCHANGER(STAT_ATK, 1, FALSE);
                BattleScriptPushCursorAndCallback(BattleScript_BattlerAbilityStatRaiseOnSwitchIn);
                effect++;
            }
            break;
        case ABILITY_DESOLATE_LAND:
            if (TryChangeBattleWeather(battler, BATTLE_WEATHER_SUN_PRIMAL, gLastUsedAbility))
            {
                BattleScriptPushCursorAndCallback(BattleScript_DesolateLandActivates);
                effect++;
            }
            break;
        case ABILITY_PRIMORDIAL_SEA:
            if (TryChangeBattleWeather(battler, BATTLE_WEATHER_RAIN_PRIMAL, gLastUsedAbility))
            {
                BattleScriptPushCursorAndCallback(BattleScript_PrimordialSeaActivates);
                effect++;
            }
            break;
        case ABILITY_DELTA_STREAM:
            if (TryChangeBattleWeather(battler, BATTLE_WEATHER_STRONG_WINDS, gLastUsedAbility))
            {
                BattleScriptPushCursorAndCallback(BattleScript_DeltaStreamActivates);
                effect++;
            }
            break;
        case ABILITY_VESSEL_OF_RUIN:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                gBattleMons[battler].volatiles.vesselOfRuin = TRUE;
                PREPARE_STAT_BUFFER(gBattleTextBuff1, STAT_SPATK);
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_RuinAbilityActivates);
                effect++;
            }
            break;
        case ABILITY_SWORD_OF_RUIN:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                gBattleMons[battler].volatiles.swordOfRuin = TRUE;
                PREPARE_STAT_BUFFER(gBattleTextBuff1, STAT_DEF);
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_RuinAbilityActivates);
                effect++;
            }
            break;
        case ABILITY_TABLETS_OF_RUIN:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                gBattleMons[battler].volatiles.tabletsOfRuin = TRUE;
                PREPARE_STAT_BUFFER(gBattleTextBuff1, STAT_ATK);
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_RuinAbilityActivates);
                effect++;
            }
            break;
        case ABILITY_BEADS_OF_RUIN:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                gBattleMons[battler].volatiles.beadsOfRuin = TRUE;
                PREPARE_STAT_BUFFER(gBattleTextBuff1, STAT_SPDEF);
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_RuinAbilityActivates);
                effect++;
            }
            break;
        case ABILITY_SUPREME_OVERLORD:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                gBattleStruct->supremeOverlordCounter[battler] = min(5, GetBattlerSideFaintCounter(battler));
                if (gBattleStruct->supremeOverlordCounter[battler] > 0)
                {
                    BattleScriptPushCursorAndCallback(BattleScript_SupremeOverlordActivates);
                    effect++;
                }
            }
            break;
        case ABILITY_COSTAR:
            if (!gSpecialStatuses[battler].switchInAbilityDone
             && IsDoubleBattle()
             && IsBattlerAlive(BATTLE_PARTNER(battler))
             && CountBattlerStatIncreases(BATTLE_PARTNER(battler), FALSE))
            {
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                for (i = 0; i < NUM_BATTLE_STATS; i++)
                    gBattleMons[battler].statStages[i] = gBattleMons[BATTLE_PARTNER(battler)].statStages[i];
                gEffectBattler = BATTLE_PARTNER(battler);
                BattleScriptPushCursorAndCallback(BattleScript_CostarActivates);
                effect++;
            }
            break;
        case ABILITY_ZERO_TO_HERO:
            if (!gSpecialStatuses[battler].switchInAbilityDone
             && GetMonData(GetBattlerMon(battler), MON_DATA_SPECIES) == SPECIES_PALAFIN_HERO
             && !GetBattlerPartyState(battler)->transformZeroToHero)
            {
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                GetBattlerPartyState(battler)->transformZeroToHero = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_ZeroToHeroActivates);
                effect++;
            }
            break;
        case ABILITY_HOSPITALITY:
            partner = BATTLE_PARTNER(battler);

            if (!gSpecialStatuses[battler].switchInAbilityDone
             && IsDoubleBattle()
             && !gBattleMons[partner].volatiles.healBlock
             && gBattleMons[partner].hp < gBattleMons[partner].maxHP
             && IsBattlerAlive(partner))
            {
                gEffectBattler = partner;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                SetHealAmount(partner, GetNonDynamaxMaxHP(partner) / 4);
                BattleScriptPushCursorAndCallback(BattleScript_HospitalityActivates);
                effect++;
            }
            break;
        case ABILITY_EMBODY_ASPECT_TEAL_MASK:
        case ABILITY_EMBODY_ASPECT_HEARTHFLAME_MASK:
        case ABILITY_EMBODY_ASPECT_WELLSPRING_MASK:
        case ABILITY_EMBODY_ASPECT_CORNERSTONE_MASK:
            if (!gSpecialStatuses[battler].switchInAbilityDone)
            {
                enum Stat stat;

                if (gLastUsedAbility == ABILITY_EMBODY_ASPECT_HEARTHFLAME_MASK)
                    stat = STAT_ATK;
                else if (gLastUsedAbility == ABILITY_EMBODY_ASPECT_WELLSPRING_MASK)
                    stat = STAT_SPDEF;
                else if (gLastUsedAbility == ABILITY_EMBODY_ASPECT_CORNERSTONE_MASK)
                    stat = STAT_DEF;
                else //ABILITY_EMBODY_ASPECT_TEAL_MASK
                    stat = STAT_SPEED;

                if (CompareStat(battler, stat, MAX_STAT_STAGE, CMP_EQUAL, gLastUsedAbility))
                    break;

                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                SET_STATCHANGER(stat, 1, FALSE);
                BattleScriptPushCursorAndCallback(BattleScript_BattlerAbilityStatRaiseOnSwitchIn);
                effect++;
            }
            break;
        case ABILITY_TERA_SHIFT:
            if (!gSpecialStatuses[battler].switchInAbilityDone
             && gBattleMons[battler].species == SPECIES_TERAPAGOS_NORMAL
             && TryBattleFormChange(battler, FORM_CHANGE_BATTLE_SWITCH))
            {
                gBattleScripting.abilityPopupOverwrite = gLastUsedAbility = ABILITY_TERA_SHIFT;
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_BattlerFormChangeWithStringEnd3);
                effect++;
            }
            break;
        case ABILITY_COMMANDER:
            partner = BATTLE_PARTNER(battler);
            if (!gSpecialStatuses[battler].switchInAbilityDone
             && IsBattlerAlive(partner)
             && IsBattlerAlive(battler)
             && gBattleStruct->battlerState[partner].commanderSpecies == SPECIES_NONE
             && gBattleMons[partner].species == SPECIES_DONDOZO
             && GET_BASE_SPECIES_ID(GetMonData(GetBattlerMon(battler), MON_DATA_SPECIES)) == SPECIES_TATSUGIRI)
            {
                SaveBattlerAttacker(gBattlerAttacker);
                gSpecialStatuses[battler].switchInAbilityDone = TRUE;
                gBattlerAttacker = partner;
                gBattleStruct->battlerState[battler].commandingDondozo = TRUE;
                gBattleStruct->battlerState[partner].commanderSpecies = gBattleMons[battler].species;
                gBattleMons[battler].volatiles.semiInvulnerable = STATE_COMMANDER;
                if (gBattleMons[battler].volatiles.confusionTurns > 0 && !gBattleMons[battler].volatiles.infiniteConfusion)
                    gBattleMons[battler].volatiles.confusionTurns--;
                BtlController_EmitSpriteInvisibility(battler, B_COMM_TO_CONTROLLER, TRUE);
                MarkBattlerForControllerExec(battler);
                BattleScriptPushCursorAndCallback(BattleScript_CommanderActivates);
                effect++;
            }
            break;
        default:
            break;
        }
        break;
    case ABILITYEFFECT_ENDTURN:
        if (IsBattlerAlive(battler))
        {
            gBattlerAttacker = battler;
            switch (gLastUsedAbility)
            {
            case ABILITY_PICKUP:
                if (gBattleMons[battler].item == ITEM_NONE
                 && gBattleStruct->changedItems[battler] == ITEM_NONE   // Will not inherit an item
                 && PickupHasValidTarget(battler))
                {
                    gBattlerTarget = RandomUniformExcept(RNG_PICKUP, 0, gBattlersCount - 1, CantPickupItem);
                    gLastUsedItem = GetBattlerPartyState(gBattlerTarget)->usedHeldItem;
                    BattleScriptExecute(BattleScript_PickupActivates);
                    effect++;
                }
                break;
            case ABILITY_HARVEST:
                if ((IsBattlerWeatherAffected(battler, B_WEATHER_SUN) || RandomPercentage(RNG_HARVEST, 50))
                 && gBattleMons[battler].item == ITEM_NONE
                 && gBattleStruct->changedItems[battler] == ITEM_NONE   // Will not inherit an item
                 && GetItemPocket(GetBattlerPartyState(battler)->usedHeldItem) == POCKET_BERRIES)
                {
                    gLastUsedItem = GetBattlerPartyState(battler)->usedHeldItem;
                    BattleScriptExecute(BattleScript_HarvestActivates);
                    effect++;
                }
                break;
            case ABILITY_ICE_BODY:
                if (IsBattlerWeatherAffected(battler, B_WEATHER_HAIL | B_WEATHER_SNOW)
                 && !IsBattlerAtMaxHp(battler)
                 && gBattleMons[battler].volatiles.semiInvulnerable != STATE_UNDERGROUND
                 && gBattleMons[battler].volatiles.semiInvulnerable != STATE_UNDERWATER
                 && !gBattleMons[battler].volatiles.healBlock)
                {
                    BattleScriptExecute(BattleScript_IceBodyHeal);
                    SetHealAmount(battler, GetNonDynamaxMaxHP(battler) / 16);
                    effect++;
                }
                break;
            case ABILITY_DRY_SKIN:
                if (IsBattlerWeatherAffected(battler, B_WEATHER_SUN))
                    goto SOLAR_POWER_HP_DROP;
            // Dry Skin works similarly to Rain Dish in Rain
            case ABILITY_RAIN_DISH:
                if (IsBattlerWeatherAffected(battler, B_WEATHER_RAIN)
                 && !IsBattlerAtMaxHp(battler)
                 && !gBattleMons[battler].volatiles.healBlock)
                {
                    s32 healAmount = gLastUsedAbility == ABILITY_RAIN_DISH ? 16 : 8;
                    SetHealAmount(battler, GetNonDynamaxMaxHP(battler) / healAmount);
                    BattleScriptExecute(BattleScript_RainDishActivates);
                    effect++;
                }
                break;
            case ABILITY_HYDRATION:
                if (IsBattlerWeatherAffected(battler, B_WEATHER_RAIN)
                 && gBattleMons[battler].status1 & STATUS1_ANY)
                {
                    goto ABILITY_HEAL_MON_STATUS;
                }
                break;
            case ABILITY_SHED_SKIN:
                if ((gBattleMons[battler].status1 & STATUS1_ANY)
                 && (B_ABILITY_TRIGGER_CHANCE == GEN_4 ? RandomPercentage(RNG_SHED_SKIN, 30) : RandomChance(RNG_SHED_SKIN, 1, 3)))
                {
                ABILITY_HEAL_MON_STATUS:
                    if (gBattleMons[battler].status1 & (STATUS1_POISON | STATUS1_TOXIC_POISON))
                        StringCopy(gBattleTextBuff1, gStatusConditionString_PoisonJpn);
                    if (gBattleMons[battler].status1 & STATUS1_SLEEP)
                    {
                        StringCopy(gBattleTextBuff1, gStatusConditionString_SleepJpn);
                        TryDeactivateSleepClause(GetBattlerSide(battler), gBattlerPartyIndexes[battler]);
                    }

                    if (gBattleMons[battler].status1 & STATUS1_PARALYSIS)
                        StringCopy(gBattleTextBuff1, gStatusConditionString_ParalysisJpn);
                    if (gBattleMons[battler].status1 & STATUS1_BURN)
                        StringCopy(gBattleTextBuff1, gStatusConditionString_BurnJpn);
                    if (gBattleMons[battler].status1 & (STATUS1_FREEZE | STATUS1_FROSTBITE))
                        StringCopy(gBattleTextBuff1, gStatusConditionString_IceJpn);

                    gBattleMons[battler].status1 = 0;
                    gBattleMons[battler].volatiles.nightmare = FALSE;
                    gBattleScripting.battler = battler;
                    BattleScriptExecute(BattleScript_ShedSkinActivates);
                    BtlController_EmitSetMonData(battler, B_COMM_TO_CONTROLLER, REQUEST_STATUS_BATTLE, 0, 4, &gBattleMons[battler].status1);
                    MarkBattlerForControllerExec(battler);
                    effect++;
                }
                break;
            case ABILITY_SPEED_BOOST:
                if (CompareStat(battler, STAT_SPEED, MAX_STAT_STAGE, CMP_LESS_THAN, gLastUsedAbility) && gDisableStructs[battler].isFirstTurn != 2)
                {
                    SaveBattlerAttacker(gBattlerAttacker);
                    SET_STATCHANGER(STAT_SPEED, 1, FALSE);
                    BattleScriptExecute(BattleScript_AttackerAbilityStatRaiseEnd2);
                    gBattleScripting.battler = battler;
                    effect++;
                }
                break;
            case ABILITY_MOODY:
                if (gDisableStructs[battler].isFirstTurn != 2)
                {
                    u32 validToRaise = 0, validToLower = 0;
                    u32 statsNum = GetGenConfig(GEN_CONFIG_MOODY_STATS) >= GEN_8 ? NUM_STATS : NUM_BATTLE_STATS;

                    for (i = STAT_ATK; i < statsNum; i++)
                    {
                        if (CompareStat(battler, i, MIN_STAT_STAGE, CMP_GREATER_THAN, gLastUsedAbility))
                            validToLower |= 1u << i;
                        if (CompareStat(battler, i, MAX_STAT_STAGE, CMP_LESS_THAN, gLastUsedAbility))
                            validToRaise |= 1u << i;
                    }

                    gBattleScripting.statChanger = gBattleScripting.savedStatChanger = 0; // for raising and lowering stat respectively
                    if (validToRaise) // Find stat to raise
                    {
                        i = RandomUniformExcept(RNG_MOODY_INCREASE, STAT_ATK, statsNum - 1, MoodyCantRaiseStat);
                        SET_STATCHANGER(i, 2, FALSE);
                        validToLower &= ~(1u << i); // Can't lower the same stat as raising.
                    }
                    if (validToLower) // Find stat to lower
                    {
                        // MoodyCantLowerStat already checks that both stats are different
                        i = RandomUniformExcept(RNG_MOODY_DECREASE, STAT_ATK, statsNum - 1, MoodyCantLowerStat);
                        SET_STATCHANGER2(gBattleScripting.savedStatChanger, i, 1, TRUE);
                    }
                    BattleScriptExecute(BattleScript_MoodyActivates);
                    effect++;
                }
                break;
            case ABILITY_TRUANT:
                gDisableStructs[gBattlerAttacker].truantCounter ^= 1;
                break;
            case ABILITY_SLOW_START:
                if (gDisableStructs[battler].slowStartTimer > 0 && --gDisableStructs[battler].slowStartTimer == 0)
                {
                    BattleScriptExecute(BattleScript_SlowStartEnds);
                    effect++;
                }
                break;
            case ABILITY_BAD_DREAMS:
                BattleScriptExecute(BattleScript_BadDreamsActivates);
                effect++;
                break;
            case ABILITY_SOLAR_POWER:
                if (IsBattlerWeatherAffected(battler, B_WEATHER_SUN))
                {
                SOLAR_POWER_HP_DROP:
                    SetPassiveDamageAmount(battler, GetNonDynamaxMaxHP(battler) / 8);
                    BattleScriptExecute(BattleScript_SolarPowerActivates);
                    effect++;
                }
                break;
            case ABILITY_HEALER:
                gBattleScripting.battler = BATTLE_PARTNER(battler);
                if (IsBattlerAlive(gBattleScripting.battler)
                    && gBattleMons[gBattleScripting.battler].status1 & STATUS1_ANY
                    && RandomPercentage(RNG_HEALER, 30))
                {
                    BattleScriptExecute(BattleScript_HealerActivates);
                    effect++;
                }
                break;
            case ABILITY_SCHOOLING:
                if (gBattleMons[battler].level < 20)
                    break;
            // Fallthrough
            case ABILITY_ZEN_MODE:
            case ABILITY_SHIELDS_DOWN:
                if (TryBattleFormChange(battler, FORM_CHANGE_BATTLE_HP_PERCENT))
                {
                    gBattleScripting.battler = battler;
                    BattleScriptExecute(BattleScript_BattlerFormChangeEnd2);
                    effect++;
                }
                break;
            case ABILITY_POWER_CONSTRUCT:
                if (TryBattleFormChange(battler, FORM_CHANGE_BATTLE_HP_PERCENT))
                {
                    gBattleScripting.battler = battler;
                    BattleScriptExecute(BattleScript_PowerConstruct);
                    effect++;
                }
                break;
            case ABILITY_BALL_FETCH:
                if (gBattleMons[battler].item == ITEM_NONE
                    && gBattleResults.catchAttempts[ItemIdToBallId(gLastUsedBall)] >= 1
                    && !gHasFetchedBall)
                {
                    gLastUsedItem = gLastUsedBall;
                    gBattleScripting.battler = battler;
                    gBattleMons[battler].item = gLastUsedItem;
                    BtlController_EmitSetMonData(battler, B_COMM_TO_CONTROLLER, REQUEST_HELDITEM_BATTLE, 0, 2, &gLastUsedItem);
                    MarkBattlerForControllerExec(battler);
                    gHasFetchedBall = TRUE;
                    BattleScriptExecute(BattleScript_BallFetch);
                    effect++;
                }
                break;
            case ABILITY_HUNGER_SWITCH:
                if (!gBattleMons[battler].volatiles.transformed
                 && GetActiveGimmick(battler) != GIMMICK_TERA
                 && TryBattleFormChange(battler, FORM_CHANGE_BATTLE_TURN_END))
                {
                    gBattleScripting.battler = battler;
                    BattleScriptExecute(BattleScript_BattlerFormChangeEnd3NoPopup);
                    effect++;
                }
                break;
            case ABILITY_CUD_CHEW:
                if (gDisableStructs[battler].cudChew == TRUE)
                {
                    gBattleScripting.battler = battler;
                    gDisableStructs[battler].cudChew = FALSE;
                    gLastUsedItem = GetBattlerPartyState(battler)->usedHeldItem;
                    GetBattlerPartyState(battler)->usedHeldItem = ITEM_NONE;
                    BattleScriptExecute(BattleScript_CudChewActivates);
                    effect++;
                }
                else if (!gDisableStructs[battler].cudChew && GetItemPocket(GetBattlerPartyState(battler)->usedHeldItem) == POCKET_BERRIES)
                {
                    gDisableStructs[battler].cudChew = TRUE;
                }
                break;
            default:
                break;
            }
        }
        break;
    case ABILITYEFFECT_COLOR_CHANGE:
        switch (gLastUsedAbility)
        {
        case ABILITY_COLOR_CHANGE:
            if (IsBattlerTurnDamaged(battler)
             && IsBattlerAlive(battler)
             && !IS_BATTLER_OF_TYPE(battler, moveType)
             && move != MOVE_STRUGGLE
             && moveType != TYPE_STELLAR
             && moveType != TYPE_MYSTERY)
            {
                gEffectBattler = gBattlerAbility = battler;
                SET_BATTLER_TYPE(battler, moveType);
                PREPARE_TYPE_BUFFER(gBattleTextBuff1, moveType);
                BattleScriptCall(BattleScript_ColorChangeActivates);
                effect++;
            }
            break;
        case ABILITY_BERSERK:
            if (IsBattlerTurnDamaged(battler)
             && IsBattlerAlive(battler)
             && HadMoreThanHalfHpNowDoesnt(battler)
             && CompareStat(battler, STAT_SPATK, MAX_STAT_STAGE, CMP_LESS_THAN, gLastUsedAbility))
            {
                gEffectBattler = gBattlerAbility = battler;
                SET_STATCHANGER(STAT_SPATK, 1, FALSE);
                BattleScriptCall(BattleScript_BerserkActivates);
                effect++;
            }
            break;
        case ABILITY_ANGER_SHELL:
            if (IsBattlerTurnDamaged(battler)
             && IsBattlerAlive(battler)
             && HadMoreThanHalfHpNowDoesnt(battler))
            {
                gEffectBattler = gBattlerAbility = battler;
                BattleScriptCall(BattleScript_AngerShellActivates);
                effect++;
            }
            break;
        default:
            break;
        }
        break;
    case ABILITYEFFECT_MOVE_END: // Think contact abilities.
        switch (gLastUsedAbility)
        {
        case ABILITY_JUSTIFIED:
            if (IsBattlerTurnDamaged(battler)
             && IsBattlerAlive(battler)
             && moveType == TYPE_DARK
             && CompareStat(battler, STAT_ATK, MAX_STAT_STAGE, CMP_LESS_THAN, gLastUsedAbility))
            {
                gEffectBattler = gBattlerAbility = battler;
                SET_STATCHANGER(STAT_ATK, 1, FALSE);
                BattleScriptCall(BattleScript_TargetAbilityStatRaiseRet);
                effect++;
            }
            break;
        case ABILITY_RATTLED:
            if (IsBattlerTurnDamaged(battler)
             && IsBattlerAlive(battler)
             && (moveType == TYPE_DARK || moveType == TYPE_BUG || moveType == TYPE_GHOST)
             && CompareStat(battler, STAT_SPEED, MAX_STAT_STAGE, CMP_LESS_THAN, gLastUsedAbility))
            {
                gEffectBattler = gBattlerAbility = battler;
                SET_STATCHANGER(STAT_SPEED, 1, FALSE);
                BattleScriptCall(BattleScript_TargetAbilityStatRaiseRet);
                effect++;
            }
            break;
        case ABILITY_WATER_COMPACTION:
            if (IsBattlerTurnDamaged(battler)
             && IsBattlerAlive(battler)
             && moveType == TYPE_WATER
             && CompareStat(battler, STAT_DEF, MAX_STAT_STAGE, CMP_LESS_THAN, gLastUsedAbility))
            {
                gEffectBattler = gBattlerAbility = battler;
                SET_STATCHANGER(STAT_DEF, 2, FALSE);
                BattleScriptCall(BattleScript_TargetAbilityStatRaiseRet);
                effect++;
            }
            break;
        case ABILITY_STAMINA:
            if (gBattlerAttacker != gBattlerTarget
             && IsBattlerTurnDamaged(gBattlerTarget)
             && IsBattlerAlive(battler)
             && CompareStat(battler, STAT_DEF, MAX_STAT_STAGE, CMP_LESS_THAN, gLastUsedAbility))
            {
                gEffectBattler = gBattlerAbility = battler;
                SET_STATCHANGER(STAT_DEF, 1, FALSE);
                BattleScriptCall(BattleScript_TargetAbilityStatRaiseRet);
                effect++;
            }
            break;
        case ABILITY_WEAK_ARMOR:
            if (IsBattlerTurnDamaged(battler)
             && IsBattlerAlive(battler)
             && IsBattleMovePhysical(gCurrentMove)
             && (CompareStat(battler, STAT_SPEED, MAX_STAT_STAGE, CMP_LESS_THAN, gLastUsedAbility) // Don't activate if both Speed and Defense cannot be raised.
               || CompareStat(battler, STAT_DEF, MIN_STAT_STAGE, CMP_GREATER_THAN, gLastUsedAbility)))
            {
                if (GetMoveEffect(gCurrentMove) == EFFECT_HIT_ESCAPE && CanBattlerSwitch(gBattlerAttacker))
                    gProtectStructs[battler].disableEjectPack = TRUE;  // Set flag for target

                BattleScriptCall(BattleScript_WeakArmorActivates);
                effect++;
            }
            break;
        case ABILITY_CURSED_BODY:
            if (IsBattlerTurnDamaged(gBattlerTarget)
             && gDisableStructs[gBattlerAttacker].disabledMove == MOVE_NONE
             && IsBattlerAlive(gBattlerAttacker)
             && !IsAbilityOnSide(gBattlerAttacker, ABILITY_AROMA_VEIL)
             && gChosenMove != MOVE_STRUGGLE
             && RandomPercentage(RNG_CURSED_BODY, 30))
            {
                gDisableStructs[gBattlerAttacker].disabledMove = gChosenMove;
                gDisableStructs[gBattlerAttacker].disableTimer = 4;
                PREPARE_MOVE_BUFFER(gBattleTextBuff1, gChosenMove);
                BattleScriptCall(BattleScript_CursedBodyActivates);
                effect++;
            }
            break;
        case ABILITY_LINGERING_AROMA:
        case ABILITY_MUMMY:
            if (IsBattlerAlive(gBattlerAttacker)
             && IsBattlerTurnDamaged(gBattlerTarget)
             && !CanBattlerAvoidContactEffects(gBattlerAttacker, gBattlerTarget, GetBattlerAbility(gBattlerAttacker), GetBattlerHoldEffect(gBattlerAttacker), move)
             && gDisableStructs[gBattlerAttacker].overwrittenAbility != GetBattlerAbility(gBattlerTarget)
             && gBattleMons[gBattlerAttacker].ability != ABILITY_MUMMY
             && gBattleMons[gBattlerAttacker].ability != ABILITY_LINGERING_AROMA
             && !gAbilitiesInfo[gBattleMons[gBattlerAttacker].ability].cantBeSuppressed)
            {
                if (GetBattlerHoldEffectIgnoreAbility(gBattlerAttacker) == HOLD_EFFECT_ABILITY_SHIELD)
                {
                    RecordItemEffectBattle(gBattlerAttacker, HOLD_EFFECT_ABILITY_SHIELD);
                    break;
                }

                RemoveAbilityFlags(gBattlerAttacker);
                gLastUsedAbility = gBattleMons[gBattlerAttacker].ability;
                gBattleMons[gBattlerAttacker].ability = gDisableStructs[gBattlerAttacker].overwrittenAbility = gBattleMons[gBattlerTarget].ability;
                BattleScriptCall(BattleScript_MummyActivates);
                effect++;
                break;
            }
            break;
        case ABILITY_WANDERING_SPIRIT:
            if (IsBattlerAlive(gBattlerAttacker)
             && IsBattlerTurnDamaged(gBattlerTarget)
             && !CanBattlerAvoidContactEffects(gBattlerAttacker, gBattlerTarget, GetBattlerAbility(gBattlerAttacker), GetBattlerHoldEffect(gBattlerAttacker), move)
             && !(GetActiveGimmick(gBattlerTarget) == GIMMICK_DYNAMAX)
             && !gAbilitiesInfo[gBattleMons[gBattlerAttacker].ability].cantBeSwapped)
            {
                if (GetBattlerHoldEffectIgnoreAbility(gBattlerAttacker) == HOLD_EFFECT_ABILITY_SHIELD)
                {
                    RecordItemEffectBattle(gBattlerAttacker, HOLD_EFFECT_ABILITY_SHIELD);
                    break;
                }
                if (GetBattlerHoldEffectIgnoreAbility(gBattlerTarget) == HOLD_EFFECT_ABILITY_SHIELD)
                {
                    RecordItemEffectBattle(gBattlerTarget, HOLD_EFFECT_ABILITY_SHIELD);
                    break;
                }

                RemoveAbilityFlags(gBattlerAttacker);
                gLastUsedAbility = gBattleMons[gBattlerAttacker].ability;
                gBattleMons[gBattlerAttacker].ability = gDisableStructs[gBattlerAttacker].overwrittenAbility = gBattleMons[gBattlerTarget].ability;
                gBattleMons[gBattlerTarget].ability = gDisableStructs[gBattlerTarget].overwrittenAbility = gLastUsedAbility;
                BattleScriptCall(BattleScript_WanderingSpiritActivates);
                effect++;
                break;
            }
            break;
        case ABILITY_ANGER_POINT:
            if (gSpecialStatuses[battler].criticalHit
             && IsBattlerTurnDamaged(battler)
             && IsBattlerAlive(battler)
             && CompareStat(battler, STAT_ATK, MAX_STAT_STAGE, CMP_LESS_THAN, gLastUsedAbility))
            {
                SET_STATCHANGER(STAT_ATK, MAX_STAT_STAGE - gBattleMons[battler].statStages[STAT_ATK], FALSE);
                BattleScriptCall(BattleScript_TargetsStatWasMaxedOut);
                effect++;
            }
            break;
        case ABILITY_GOOEY:
        case ABILITY_TANGLING_HAIR:
            if (IsBattlerAlive(gBattlerAttacker)
             && (CompareStat(gBattlerAttacker, STAT_SPEED, MIN_STAT_STAGE, CMP_GREATER_THAN, gLastUsedAbility) || GetBattlerAbility(gBattlerAttacker) == ABILITY_MIRROR_ARMOR)
             && !gProtectStructs[gBattlerAttacker].confusionSelfDmg
             && IsBattlerTurnDamaged(gBattlerTarget)
             && !CanBattlerAvoidContactEffects(gBattlerAttacker, gBattlerTarget, GetBattlerAbility(gBattlerAttacker), GetBattlerHoldEffect(gBattlerAttacker), move))
            {
                SET_STATCHANGER(STAT_SPEED, 1, TRUE);
                PREPARE_ABILITY_BUFFER(gBattleTextBuff1, gLastUsedAbility);
                BattleScriptCall(BattleScript_GooeyActivates);
                effect++;
            }
            break;
        case ABILITY_ROUGH_SKIN:
        case ABILITY_IRON_BARBS:
            if (IsBattlerAlive(gBattlerAttacker)
             && !gProtectStructs[gBattlerAttacker].confusionSelfDmg
             && IsBattlerTurnDamaged(gBattlerTarget)
             && !CanBattlerAvoidContactEffects(gBattlerAttacker, gBattlerTarget, GetBattlerAbility(gBattlerAttacker), GetBattlerHoldEffect(gBattlerAttacker), move))
            {
                SetPassiveDamageAmount(gBattlerAttacker, GetNonDynamaxMaxHP(gBattlerAttacker) / (B_ROUGH_SKIN_DMG >= GEN_4 ? 8 : 16));
                PREPARE_ABILITY_BUFFER(gBattleTextBuff1, gLastUsedAbility);
                BattleScriptCall(BattleScript_RoughSkinActivates);
                effect++;
            }
            break;
        case ABILITY_AFTERMATH:
            if (!(gBattleStruct->moveResultFlags[gBattlerTarget] & MOVE_RESULT_NO_EFFECT)
             && !IsBattlerAlive(gBattlerTarget)
             && IsBattlerAlive(gBattlerAttacker)
             && !CanBattlerAvoidContactEffects(gBattlerAttacker, gBattlerTarget, GetBattlerAbility(gBattlerAttacker), GetBattlerHoldEffect(gBattlerAttacker), move))
            {
                if ((battler = IsAbilityOnField(ABILITY_DAMP)))
                {
                    gBattleScripting.battler = battler - 1;
                    BattleScriptCall(BattleScript_DampPreventsAftermath);
                }
                else
                {
                    gBattleScripting.battler = gBattlerTarget;
                    SetPassiveDamageAmount(gBattlerAttacker, GetNonDynamaxMaxHP(gBattlerAttacker) / 4);
                    BattleScriptCall(BattleScript_AftermathDmg);
                }
                effect++;
            }
            break;
        case ABILITY_INNARDS_OUT:
            if (!(gBattleStruct->moveResultFlags[gBattlerTarget] & MOVE_RESULT_NO_EFFECT)
             && !IsBattlerAlive(gBattlerTarget)
             && IsBattlerAlive(gBattlerAttacker))
            {
                // Prevent Innards Out effect if Future Sight user is currently not on field
                if (IsFutureSightAttackerInParty(gBattlerAttacker, gBattlerTarget, gCurrentMove))
                    break;

                gBattleScripting.battler = gBattlerTarget;
                SetPassiveDamageAmount(gBattlerAttacker, gBattleStruct->moveDamage[gBattlerTarget]);
                BattleScriptCall(BattleScript_AftermathDmg);
                effect++;
            }
            break;
        case ABILITY_EFFECT_SPORE:
        {
            enum Ability abilityAtk = GetBattlerAbility(gBattlerAttacker);
            enum HoldEffect holdEffectAtk = GetBattlerHoldEffect(gBattlerAttacker);
            if (IsAffectedByPowderMove(gBattlerAttacker, abilityAtk, holdEffectAtk))
            {
                u32 poison, paralysis, sleep;

                if (B_ABILITY_TRIGGER_CHANCE >= GEN_5)
                {
                    poison = 9;
                    paralysis = 19;
                }
                else
                {
                    poison = 10;
                    paralysis = 20;
                }
                sleep = 30;

                i = RandomUniform(RNG_EFFECT_SPORE, 0, B_ABILITY_TRIGGER_CHANCE >= GEN_4 ? 99 : 299);
                if (i < poison)
                    goto POISON_POINT;
                if (i < paralysis)
                    goto STATIC;
                // Sleep
                if (i < sleep
                 && IsBattlerAlive(gBattlerAttacker)
                 && !gProtectStructs[gBattlerAttacker].confusionSelfDmg
                 && IsBattlerTurnDamaged(gBattlerTarget)
                 && CanBeSlept(gBattlerTarget, gBattlerAttacker, abilityAtk, NOT_BLOCKED_BY_SLEEP_CLAUSE)
                 && !CanBattlerAvoidContactEffects(gBattlerAttacker, gBattlerTarget, abilityAtk, holdEffectAtk, move))
                {
                    if (IsSleepClauseEnabled())
                        gBattleStruct->battlerState[gBattlerAttacker].sleepClauseEffectExempt = TRUE;
                    gEffectBattler = gBattlerAttacker;
                    gBattleScripting.battler = gBattlerTarget;
                    gBattleScripting.moveEffect = MOVE_EFFECT_SLEEP;
                    PREPARE_ABILITY_BUFFER(gBattleTextBuff1, gLastUsedAbility);
                    BattleScriptCall(BattleScript_AbilityStatusEffect);
                    effect++;
                }
            }
        }
            break;
        case ABILITY_POISON_POINT:
            if (B_ABILITY_TRIGGER_CHANCE >= GEN_4 ? RandomPercentage(RNG_POISON_POINT, 30) : RandomChance(RNG_POISON_POINT, 1, 3))
            {
            POISON_POINT:
            {
                enum Ability abilityAtk = GetBattlerAbility(gBattlerAttacker);
                if (IsBattlerAlive(gBattlerAttacker)
                && !gProtectStructs[gBattlerAttacker].confusionSelfDmg
                && IsBattlerTurnDamaged(gBattlerTarget)
                && CanBePoisoned(gBattlerTarget, gBattlerAttacker, gLastUsedAbility, abilityAtk)
                && !CanBattlerAvoidContactEffects(gBattlerAttacker, gBattlerTarget, abilityAtk, GetBattlerHoldEffect(gBattlerAttacker), move))
                {
                    gEffectBattler = gBattlerAttacker;
                    gBattleScripting.battler = gBattlerTarget;
                    gBattleScripting.moveEffect = MOVE_EFFECT_POISON;
                    PREPARE_ABILITY_BUFFER(gBattleTextBuff1, gLastUsedAbility);
                    BattleScriptCall(BattleScript_AbilityStatusEffect);
                    effect++;
                }
            }
            }
            break;
        case ABILITY_STATIC:
            if (B_ABILITY_TRIGGER_CHANCE >= GEN_4 ? RandomPercentage(RNG_STATIC, 30) : RandomChance(RNG_STATIC, 1, 3))
            {
            STATIC:
            {
                enum Ability abilityAtk = GetBattlerAbility(gBattlerAttacker);
                if (IsBattlerAlive(gBattlerAttacker)
                && !gProtectStructs[gBattlerAttacker].confusionSelfDmg
                && IsBattlerTurnDamaged(gBattlerTarget)
                && CanBeParalyzed(gBattlerTarget, gBattlerAttacker, abilityAtk)
                && !CanBattlerAvoidContactEffects(gBattlerAttacker, gBattlerTarget, abilityAtk, GetBattlerHoldEffect(gBattlerAttacker), move))
                {
                    gEffectBattler = gBattlerAttacker;
                    gBattleScripting.battler = gBattlerTarget;
                    gBattleScripting.moveEffect = MOVE_EFFECT_PARALYSIS;
                    PREPARE_ABILITY_BUFFER(gBattleTextBuff1, gLastUsedAbility);
                    BattleScriptCall(BattleScript_AbilityStatusEffect);
                    effect++;
                }
            }
            }
            break;
        case ABILITY_FLAME_BODY:
            if (IsBattlerAlive(gBattlerAttacker)
             && !gProtectStructs[gBattlerAttacker].confusionSelfDmg
             && !CanBattlerAvoidContactEffects(gBattlerAttacker, gBattlerTarget, GetBattlerAbility(gBattlerAttacker), GetBattlerHoldEffect(gBattlerAttacker), move)
             && IsBattlerTurnDamaged(gBattlerTarget)
             && CanBeBurned(gBattlerTarget, gBattlerAttacker, GetBattlerAbility(gBattlerAttacker))
             && (B_ABILITY_TRIGGER_CHANCE >= GEN_4 ? RandomPercentage(RNG_FLAME_BODY, 30) : RandomChance(RNG_FLAME_BODY, 1, 3)))
            {
                gEffectBattler = gBattlerAttacker;
                gBattleScripting.battler = gBattlerTarget;
                gBattleScripting.moveEffect = MOVE_EFFECT_BURN;
                PREPARE_ABILITY_BUFFER(gBattleTextBuff1, gLastUsedAbility);
                BattleScriptCall(BattleScript_AbilityStatusEffect);
                effect++;
            }
            break;
        case ABILITY_CUTE_CHARM:
            if (IsBattlerAlive(gBattlerAttacker)
             && !gProtectStructs[gBattlerAttacker].confusionSelfDmg
             && IsBattlerTurnDamaged(gBattlerTarget)
             && IsBattlerAlive(gBattlerTarget)
             && (B_ABILITY_TRIGGER_CHANCE >= GEN_4 ? RandomPercentage(RNG_CUTE_CHARM, 30) : RandomChance(RNG_CUTE_CHARM, 1, 3))
             && !(gBattleMons[gBattlerAttacker].volatiles.infatuation)
             && AreBattlersOfOppositeGender(gBattlerAttacker, gBattlerTarget)
             && !IsAbilityAndRecord(gBattlerAttacker, GetBattlerAbility(gBattlerAttacker), ABILITY_OBLIVIOUS)
             && !CanBattlerAvoidContactEffects(gBattlerAttacker, gBattlerTarget, GetBattlerAbility(gBattlerAttacker), GetBattlerHoldEffect(gBattlerAttacker), move)
             && !IsAbilityOnSide(gBattlerAttacker, ABILITY_AROMA_VEIL))
            {
                gBattleMons[gBattlerAttacker].volatiles.infatuation = INFATUATED_WITH(gBattlerTarget);
                BattleScriptCall(BattleScript_CuteCharmActivates);
                effect++;
            }
            break;
        case ABILITY_ILLUSION:
            if (gBattleStruct->illusion[gBattlerTarget].state == ILLUSION_ON && IsBattlerTurnDamaged(gBattlerTarget))
            {
                gBattleScripting.battler = gBattlerTarget;
                BattleScriptCall(BattleScript_IllusionOff);
                effect++;
            }
            break;
        case ABILITY_COTTON_DOWN:
            if (IsBattlerAlive(gBattlerAttacker)
             && !gProtectStructs[gBattlerAttacker].confusionSelfDmg
             && IsBattlerTurnDamaged(gBattlerTarget))
            {
                gEffectBattler = gBattlerTarget;
                BattleScriptCall(BattleScript_CottonDownActivates);
                effect++;
            }
            break;
        case ABILITY_STEAM_ENGINE:
            if (IsBattlerTurnDamaged(gBattlerTarget)
             && IsBattlerAlive(battler)
             && CompareStat(battler, STAT_SPEED, MAX_STAT_STAGE, CMP_LESS_THAN, gLastUsedAbility)
             && (moveType == TYPE_FIRE || moveType == TYPE_WATER))
            {
                gEffectBattler = gBattlerAbility = battler;
                SET_STATCHANGER(STAT_SPEED, 6, FALSE);
                BattleScriptCall(BattleScript_TargetAbilityStatRaiseRet);
                effect++;
            }
            break;
        case ABILITY_SAND_SPIT:
            if (!gProtectStructs[gBattlerAttacker].confusionSelfDmg
             && IsBattlerTurnDamaged(gBattlerTarget)
             && !(gBattleWeather & B_WEATHER_SANDSTORM && HasWeatherEffect()))
            {
                if (gBattleWeather & B_WEATHER_PRIMAL_ANY && HasWeatherEffect())
                {
                    BattleScriptCall(BattleScript_BlockedByPrimalWeatherRet);
                    effect++;
                }
                else if (TryChangeBattleWeather(battler, BATTLE_WEATHER_SANDSTORM, gLastUsedAbility))
                {
                    gBattleScripting.battler = battler;
                    BattleScriptCall(BattleScript_SandSpitActivates);
                    effect++;
                }
            }
            break;
        case ABILITY_PERISH_BODY:
            if (!gProtectStructs[gBattlerAttacker].confusionSelfDmg
             && IsBattlerTurnDamaged(gBattlerTarget)
             && IsBattlerAlive(battler)
             && !CanBattlerAvoidContactEffects(gBattlerAttacker, gBattlerTarget, GetBattlerAbility(gBattlerAttacker), GetBattlerHoldEffect(gBattlerAttacker), move)
             && !gBattleMons[gBattlerAttacker].volatiles.perishSong)
            {
                if (!gBattleMons[battler].volatiles.perishSong)
                {
                    gBattleMons[battler].volatiles.perishSong = TRUE;
                    gDisableStructs[battler].perishSongTimer = 3;
                }
                gBattleMons[gBattlerAttacker].volatiles.perishSong = TRUE;
                gDisableStructs[gBattlerAttacker].perishSongTimer = 3;
                BattleScriptCall(BattleScript_PerishBodyActivates);
                effect++;
            }
            break;
        case ABILITY_GULP_MISSILE:
            if (!gProtectStructs[gBattlerAttacker].confusionSelfDmg
             && IsBattlerTurnDamaged(gBattlerTarget)
             && IsBattlerAlive(gBattlerAttacker)
             && gBattleMons[gBattlerTarget].species != SPECIES_CRAMORANT)
            {
                if (!IsAbilityAndRecord(gBattlerAttacker, GetBattlerAbility(gBattlerAttacker), ABILITY_MAGIC_GUARD))
                    SetPassiveDamageAmount(gBattlerAttacker, GetNonDynamaxMaxHP(gBattlerAttacker) / 4);

                switch(gBattleMons[gBattlerTarget].species)
                {
                    case SPECIES_CRAMORANT_GORGING:
                        TryBattleFormChange(battler, FORM_CHANGE_HIT_BY_MOVE);
                        BattleScriptCall(BattleScript_GulpMissileGorging);
                        effect++;
                        break;
                    case SPECIES_CRAMORANT_GULPING:
                        TryBattleFormChange(battler, FORM_CHANGE_HIT_BY_MOVE);
                        BattleScriptCall(BattleScript_GulpMissileGulping);
                        effect++;
                        break;
                }
            }
            break;
        case ABILITY_SEED_SOWER:
            if (!gProtectStructs[gBattlerAttacker].confusionSelfDmg
             && IsBattlerTurnDamaged(gBattlerTarget)
             && IsBattlerAlive(gBattlerTarget)
             && TryChangeBattleTerrain(gBattlerTarget, STATUS_FIELD_GRASSY_TERRAIN))
            {
                BattleScriptCall(BattleScript_SeedSowerActivates);
                effect++;
            }
            break;
        case ABILITY_THERMAL_EXCHANGE:
            if (IsBattlerTurnDamaged(gBattlerTarget)
             && IsBattlerAlive(gBattlerTarget)
             && CompareStat(gBattlerTarget, STAT_ATK, MAX_STAT_STAGE, CMP_LESS_THAN, gLastUsedAbility)
             && moveType == TYPE_FIRE)
            {
                gEffectBattler = gBattlerAbility = gBattlerTarget;
                SET_STATCHANGER(STAT_ATK, 1, FALSE);
                BattleScriptCall(BattleScript_TargetAbilityStatRaiseRet);
                effect++;
            }
            break;
        case ABILITY_WIND_POWER:
            if (!IsWindMove(gCurrentMove))
                break;
            // fall through
        case ABILITY_ELECTROMORPHOSIS:
            if (!gProtectStructs[gBattlerAttacker].confusionSelfDmg
             && IsBattlerTurnDamaged(gBattlerTarget)
             && IsBattlerAlive(gBattlerTarget))
            {
                BattleScriptCall(BattleScript_WindPowerActivates);
                effect++;
            }
            break;
        case ABILITY_TOXIC_DEBRIS:
            if (!gBattleStruct->isSkyBattle
             && !gProtectStructs[gBattlerAttacker].confusionSelfDmg
             && IsBattleMovePhysical(gCurrentMove)
             && IsBattlerTurnDamaged(gBattlerTarget)
             && (gSideTimers[GetBattlerSide(gBattlerAttacker)].toxicSpikesAmount != 2))
            {
                SaveBattlerTarget(gBattlerTarget);
                SaveBattlerAttacker(gBattlerAttacker);
                gBattlerAttacker = gBattlerTarget;
                gBattlerTarget = BATTLE_OPPOSITE(gBattlerAttacker);
                BattleScriptCall(BattleScript_ToxicDebrisActivates);
                effect++;
            }
            break;
        default:
            break;
        }
        break;
    case ABILITYEFFECT_MOVE_END_ATTACKER: // Same as above, but for attacker
        switch (gLastUsedAbility)
        {
        case ABILITY_POISON_TOUCH:
            if (IsBattlerAlive(gBattlerTarget)
             && !gProtectStructs[gBattlerAttacker].confusionSelfDmg
             && CanBePoisoned(gBattlerAttacker, gBattlerTarget, gLastUsedAbility, GetBattlerAbility(gBattlerTarget))
             && !CanBattlerAvoidContactEffects(gBattlerAttacker, gBattlerTarget, GetBattlerAbility(gBattlerAttacker), GetBattlerHoldEffect(gBattlerAttacker), move)
             && IsBattlerTurnDamaged(gBattlerTarget) // Need to actually hit the target
             && RandomPercentage(RNG_POISON_TOUCH, 30))
            {
                gEffectBattler = gBattlerTarget;
                gBattleScripting.battler = gBattlerAttacker;
                gBattleScripting.moveEffect = MOVE_EFFECT_POISON;
                PREPARE_ABILITY_BUFFER(gBattleTextBuff1, gLastUsedAbility);
                BattleScriptCall(BattleScript_AbilityStatusEffect);
                effect++;
            }
            break;
        case ABILITY_TOXIC_CHAIN:
            if (gBattleStruct->toxicChainPriority)
            {
                gBattleStruct->toxicChainPriority = FALSE;
                gEffectBattler = gBattlerTarget;
                gBattleScripting.battler = gBattlerAttacker;
                gBattleScripting.moveEffect = MOVE_EFFECT_TOXIC;
                PREPARE_ABILITY_BUFFER(gBattleTextBuff1, gLastUsedAbility);
                BattleScriptCall(BattleScript_AbilityStatusEffect);
                effect++;
            }
            break;
        case ABILITY_STENCH:
            if (IsBattlerAlive(gBattlerTarget)
             && !gProtectStructs[gBattlerAttacker].confusionSelfDmg
             && RandomChance(RNG_STENCH, 1, 10)
             && IsBattlerTurnDamaged(gBattlerTarget)
             && !MoveHasAdditionalEffect(gCurrentMove, MOVE_EFFECT_FLINCH))
            {
                SetMoveEffect(gBattlerAttacker, gBattlerTarget, MOVE_EFFECT_FLINCH, gBattlescriptCurrInstr, EFFECT_PRIMARY);
                effect++;
            }
            break;
        case ABILITY_GULP_MISSILE:
            if ((gBattleMons[gBattlerAttacker].species == SPECIES_CRAMORANT)
             && ((gCurrentMove == MOVE_SURF && IsBattlerTurnDamaged(gBattlerTarget)) || gBattleMons[gBattlerAttacker].volatiles.semiInvulnerable == STATE_UNDERWATER)
             && TryBattleFormChange(gBattlerAttacker, FORM_CHANGE_BATTLE_HP_PERCENT))
            {
                gBattleScripting.battler = gBattlerAttacker;
                BattleScriptCall(BattleScript_BattlerFormChange);
                effect++;
            }
            break;
        case ABILITY_POISON_PUPPETEER:
            if (gBattleMons[gBattlerAttacker].species == SPECIES_PECHARUNT
             && gBattleStruct->poisonPuppeteerConfusion == TRUE
             && CanBeConfused(gBattlerTarget))
            {
                gBattleStruct->poisonPuppeteerConfusion = FALSE;
                gBattleScripting.moveEffect = MOVE_EFFECT_CONFUSION;
                PREPARE_ABILITY_BUFFER(gBattleTextBuff1, gLastUsedAbility);
                BattleScriptCall(BattleScript_AbilityStatusEffect);
                effect++;
            }
            break;
        default:
            break;
        }
        break;
    case ABILITYEFFECT_MOVE_END_OTHER: // Abilities that activate on *another* battler's moveend: Dancer, Soul-Heart, Receiver, Symbiosis
        switch (GetBattlerAbility(battler))
        {
        case ABILITY_DANCER:
            if (IsBattlerAlive(battler)
             && IsDanceMove(move)
             && !gSpecialStatuses[battler].dancerUsedMove
             && gBattlerAttacker != battler)
            {
                // Set bit and save Dancer mon's original target
                gSpecialStatuses[battler].dancerUsedMove = TRUE;
                gSpecialStatuses[battler].dancerOriginalTarget = gBattleStruct->moveTarget[battler] | 0x4;
                gBattlerAttacker = gBattlerAbility = battler;
                gCalledMove = move;

                // Set the target to the original target of the mon that first used a Dance move
                gBattlerTarget = gBattleScripting.savedBattler & 0x3;

                // Make sure that the target isn't an ally - if it is, target the original user
                if (IsBattlerAlly(gBattlerTarget, gBattlerAttacker))
                    gBattlerTarget = (gBattleScripting.savedBattler & 0xF0) >> 4;
                BattleScriptExecute(BattleScript_DancerActivates);
                effect++;
            }
            break;
        default:
            break;
        }
        break;
    case ABILITYEFFECT_OPPORTUNIST:
    case ABILITYEFFECT_OPPORTUNIST_FIRST_TURN:
        switch (ability)
        {
        case ABILITY_OPPORTUNIST:
            if (gProtectStructs[battler].activateOpportunist == 2)
            {
                gBattleScripting.battler = battler;
                gProtectStructs[battler].activateOpportunist--;
                ChooseStatBoostAnimation(battler);
                if (caseID == ABILITYEFFECT_OPPORTUNIST_FIRST_TURN)
                    BattleScriptPushCursorAndCallback(BattleScript_OpportunistCopyStatChangeEnd3);
                else
                    BattleScriptCall(BattleScript_OpportunistCopyStatChange);
                effect = 1;
            }
            break;
        default:
            break;
        }
        break;
    case ABILITYEFFECT_IMMUNITY:
        effect = TryImmunityAbilityHealStatus(battler, caseID);
        if (effect)
            return effect;
        break;
    case ABILITYEFFECT_ON_SWITCHIN_IMMUNITIES:
        effect = TryImmunityAbilityHealStatus(battler, caseID);
        break;
    case ABILITYEFFECT_SYNCHRONIZE:
        if (gLastUsedAbility == ABILITY_SYNCHRONIZE && gBattleStruct->synchronizeMoveEffect != MOVE_EFFECT_NONE)
        {
            gBattleScripting.battler = gBattlerAbility = gBattlerTarget;
            RecordAbilityBattle(gBattlerTarget, ABILITY_SYNCHRONIZE);

            if (B_SYNCHRONIZE_TOXIC < GEN_5 && gBattleStruct->synchronizeMoveEffect == MOVE_EFFECT_TOXIC)
                gBattleStruct->synchronizeMoveEffect = MOVE_EFFECT_POISON;

            if (CanSetNonVolatileStatus(
                    gBattlerTarget,
                    gBattlerAttacker,
                    gLastUsedAbility,
                    GetBattlerAbility(gBattlerAttacker),
                    gBattleStruct->synchronizeMoveEffect,
                    CHECK_TRIGGER))
            {
                gEffectBattler = gBattlerAttacker;
                gBattleScripting.moveEffect = gBattleStruct->synchronizeMoveEffect;
                PREPARE_ABILITY_BUFFER(gBattleTextBuff1, ABILITY_SYNCHRONIZE);
                BattleScriptCall(BattleScript_SynchronizeActivates);
                effect++;
            }
            else // Synchronize ability pop up still shows up even if status fails
            {
                BattleScriptCall(BattleScript_AbilityPopUp);
            }
            gBattleStruct->synchronizeMoveEffect = MOVE_EFFECT_NONE;
        }
        break;
    case ABILITYEFFECT_ATK_SYNCHRONIZE:
        if (gLastUsedAbility == ABILITY_SYNCHRONIZE && gBattleStruct->synchronizeMoveEffect != MOVE_EFFECT_NONE)
        {
            gBattleScripting.battler = gBattlerAbility = gBattlerAttacker;
            RecordAbilityBattle(gBattlerAttacker, ABILITY_SYNCHRONIZE);

            if (B_SYNCHRONIZE_TOXIC < GEN_5 && gBattleStruct->synchronizeMoveEffect == MOVE_EFFECT_TOXIC)
                gBattleStruct->synchronizeMoveEffect = MOVE_EFFECT_POISON;

            if (CanSetNonVolatileStatus(
                    gBattlerAttacker,
                    gBattlerTarget,
                    gLastUsedAbility,
                    GetBattlerAbility(gBattlerAttacker),
                    gBattleStruct->synchronizeMoveEffect,
                    CHECK_TRIGGER))
            {
                if (gBattleStruct->synchronizeMoveEffect == MOVE_EFFECT_TOXIC)
                    gBattleStruct->synchronizeMoveEffect = MOVE_EFFECT_POISON;

                gEffectBattler = gBattlerTarget;
                gBattleScripting.moveEffect = gBattleStruct->synchronizeMoveEffect;
                PREPARE_ABILITY_BUFFER(gBattleTextBuff1, ABILITY_SYNCHRONIZE);
                BattleScriptCall(BattleScript_SynchronizeActivates);
                effect++;
            }
            else // Synchronize ability pop up still shows up even if status fails
            {
                BattleScriptCall(BattleScript_AbilityPopUp);
            }
            gBattleStruct->synchronizeMoveEffect = MOVE_EFFECT_NONE;
        }
        break;

    case ABILITYEFFECT_NEUTRALIZINGGAS:
    case ABILITYEFFECT_NEUTRALIZINGGAS_FIRST_TURN:
        // Prints message only. separate from ABILITYEFFECT_ON_SWITCHIN bc activates before entry hazards
        if (gBattleMons[battler].ability == ABILITY_NEUTRALIZING_GAS && !gDisableStructs[battler].neutralizingGas)
        {
            gDisableStructs[battler].neutralizingGas = TRUE;
            gBattlerAbility = battler;
            gBattleCommunication[MULTISTRING_CHOOSER] = B_MSG_SWITCHIN_NEUTRALIZING_GAS;
            if (caseID == ABILITYEFFECT_NEUTRALIZINGGAS_FIRST_TURN)
                BattleScriptPushCursorAndCallback(BattleScript_SwitchInAbilityMsg);
            else
                BattleScriptCall(BattleScript_SwitchInAbilityMsgRet);
            effect++;
        }
        break;
    case ABILITYEFFECT_ON_WEATHER: // For ability effects that activate when the battle weather changes.
        gLastUsedAbility = GetBattlerAbility(battler);
        switch (gLastUsedAbility)
        {
        case ABILITY_FORECAST:
        case ABILITY_FLOWER_GIFT:
        case ABILITY_ICE_FACE:
        {
            u32 battlerWeatherAffected = IsBattlerWeatherAffected(battler, gBattleWeather);
            if (battlerWeatherAffected && !CanBattlerFormChange(battler, FORM_CHANGE_BATTLE_WEATHER))
            {
                // If Hail/Snow activates when in Eiscue is in base, prevent reversion when Eiscue Noice gets broken
                gDisableStructs[battler].weatherAbilityDone = TRUE;
            }

            if (((!gDisableStructs[battler].weatherAbilityDone && battlerWeatherAffected)
             || gBattleWeather == B_WEATHER_NONE
             || !HasWeatherEffect()) // Air Lock active
             && TryBattleFormChange(battler, FORM_CHANGE_BATTLE_WEATHER))
            {
                gBattleScripting.battler = battler;
                gDisableStructs[battler].weatherAbilityDone = TRUE;
                BattleScriptPushCursorAndCallback(BattleScript_BattlerFormChangeWithStringEnd3);
                effect++;
            }
            break;
        }
        case ABILITY_PROTOSYNTHESIS:
            if (!gDisableStructs[battler].weatherAbilityDone
             && (gBattleWeather & B_WEATHER_SUN) && HasWeatherEffect()
             && !gBattleMons[battler].volatiles.transformed
             && !gDisableStructs[battler].boosterEnergyActivated)
            {
                gDisableStructs[battler].weatherAbilityDone = TRUE;
                PREPARE_STAT_BUFFER(gBattleTextBuff1, GetHighestStatId(battler));
                gBattleScripting.battler = battler;
                BattleScriptPushCursorAndCallback(BattleScript_ProtosynthesisActivates);
                effect++;
            }
            break;
        default:
            break;
        }
        break;
    case ABILITYEFFECT_ON_TERRAIN:  // For ability effects that activate when the field terrain changes.
        gLastUsedAbility = GetBattlerAbility(battler);
        switch (gLastUsedAbility)
        {
        case ABILITY_MIMICRY:
            if (!gDisableStructs[battler].terrainAbilityDone && ChangeTypeBasedOnTerrain(battler))
            {
                gDisableStructs[battler].terrainAbilityDone = TRUE;
                ChangeTypeBasedOnTerrain(battler);
                gBattlerAbility = gBattleScripting.battler = battler;
                BattleScriptPushCursorAndCallback(BattleScript_MimicryActivates);
                effect++;
            }
            break;
        case ABILITY_QUARK_DRIVE:
            if (!gDisableStructs[battler].terrainAbilityDone
             && gFieldStatuses & STATUS_FIELD_ELECTRIC_TERRAIN
             && !gBattleMons[battler].volatiles.transformed
             && !gDisableStructs[battler].boosterEnergyActivated)
            {
                gDisableStructs[battler].terrainAbilityDone = TRUE;
                PREPARE_STAT_BUFFER(gBattleTextBuff1, GetHighestStatId(battler));
                gBattlerAbility = gBattleScripting.battler = battler;
                BattleScriptPushCursorAndCallback(BattleScript_QuarkDriveActivates);
                effect++;
            }
            break;
        default:
            break;
        }
        break;
    }

    if (effect && gLastUsedAbility != 0xFFFF)
        RecordAbilityBattle(battler, gLastUsedAbility);
    if (effect && caseID <= ABILITYEFFECT_MOVE_END)
        gBattlerAbility = battler;

    return effect;
}

bool32 TryPrimalReversion(u32 battler)
{
    if (GetBattlerHoldEffectIgnoreNegation(battler) == HOLD_EFFECT_PRIMAL_ORB
     && GetBattleFormChangeTargetSpecies(battler, FORM_CHANGE_BATTLE_PRIMAL_REVERSION) != gBattleMons[battler].species)
    {
        gBattleScripting.battler = battler;
        BattleScriptPushCursorAndCallback(BattleScript_PrimalReversion);
        return TRUE;
    }
    return FALSE;
}

bool32 IsNeutralizingGasOnField(void)
{
    u32 i;

    for (i = 0; i < gBattlersCount; i++)
    {
        if (gDisableStructs[i].neutralizingGas && !gBattleMons[i].volatiles.gastroAcid)
            return TRUE;
    }

    return FALSE;
}

bool32 IsMoldBreakerTypeAbility(u32 battler, enum Ability ability)
{
    if (gBattleMons[battler].volatiles.gastroAcid)
        return FALSE;

    if (ability == ABILITY_MOLD_BREAKER
     || ability == ABILITY_TERAVOLT
     || ability == ABILITY_TURBOBLAZE
     || (ability == ABILITY_MYCELIUM_MIGHT && IsBattleMoveStatus(gCurrentMove)))
    {
        RecordAbilityBattle(battler, ability);
        return TRUE;
    }

    return FALSE;
}

static inline bool32 CanBreakThroughAbility(u32 battlerAtk, u32 battlerDef, enum Ability ability, u32 hasAbilityShield, u32 ignoreMoldBreaker)
{
    if (hasAbilityShield || ignoreMoldBreaker)
        return FALSE;

    return ((IsMoldBreakerTypeAbility(battlerAtk, ability) || MoveIgnoresTargetAbility(gCurrentMove))
         && battlerDef != battlerAtk
         && gAbilitiesInfo[gBattleMons[battlerDef].ability].breakable
         && gBattlerByTurnOrder[gCurrentTurnActionNumber] == battlerAtk
         && gActionsByTurnOrder[gCurrentTurnActionNumber] == B_ACTION_USE_MOVE
         && gCurrentTurnActionNumber < gBattlersCount);
}

u32 GetBattlerAbilityNoAbilityShield(u32 battler)
{
    return GetBattlerAbilityInternal(battler, FALSE, TRUE);
}

u32 GetBattlerAbilityIgnoreMoldBreaker(u32 battler)
{
    return GetBattlerAbilityInternal(battler, TRUE, FALSE);
}

enum Ability GetBattlerAbility(u32 battler)
{
    return GetBattlerAbilityInternal(battler, FALSE, FALSE);
}

u32 GetBattlerAbilityInternal(u32 battler, u32 ignoreMoldBreaker, u32 noAbilityShield)
{
    bool32 hasAbilityShield = !noAbilityShield && GetBattlerHoldEffectIgnoreAbility(battler) == HOLD_EFFECT_ABILITY_SHIELD;
    bool32 abilityCantBeSuppressed = gAbilitiesInfo[gBattleMons[battler].ability].cantBeSuppressed;

    if (abilityCantBeSuppressed)
    {
        // Edge case: pokemon under the effect of gastro acid transforms into a pokemon with Comatose (Todo: verify how other unsuppressable abilities behave)
        if (gBattleMons[battler].volatiles.transformed
            && gBattleMons[battler].volatiles.gastroAcid
            && gBattleMons[battler].ability == ABILITY_COMATOSE)
                return ABILITY_NONE;

        if (CanBreakThroughAbility(gBattlerAttacker, battler, gBattleMons[gBattlerAttacker].ability, hasAbilityShield, ignoreMoldBreaker))
            return ABILITY_NONE;

        return gBattleMons[battler].ability;
    }

    if (gBattleMons[battler].volatiles.gastroAcid)
        return ABILITY_NONE;

    if (!hasAbilityShield
     && IsNeutralizingGasOnField()
     && !gDisableStructs[battler].neutralizingGas)
        return ABILITY_NONE;

    if (CanBreakThroughAbility(gBattlerAttacker, battler, gBattleMons[gBattlerAttacker].ability, hasAbilityShield, ignoreMoldBreaker))
        return ABILITY_NONE;

    return gBattleMons[battler].ability;
}

u32 IsAbilityOnSide(u32 battler, enum Ability ability)
{
    if (IsBattlerAlive(battler) && GetBattlerAbility(battler) == ability)
        return battler + 1;
    else if (IsBattlerAlive(BATTLE_PARTNER(battler)) && GetBattlerAbility(BATTLE_PARTNER(battler)) == ability)
        return BATTLE_PARTNER(battler) + 1;
    else
        return 0;
}

u32 IsAbilityOnOpposingSide(u32 battler, enum Ability ability)
{
    return IsAbilityOnSide(BATTLE_OPPOSITE(battler), ability);
}

u32 IsAbilityOnField(enum Ability ability)
{
    u32 i;

    for (i = 0; i < gBattlersCount; i++)
    {
        if (IsBattlerAlive(i) && GetBattlerAbility(i) == ability)
            return i + 1;
    }

    return 0;
}

u32 IsAbilityOnFieldExcept(u32 battler, enum Ability ability)
{
    u32 i;

    for (i = 0; i < gBattlersCount; i++)
    {
        if (i != battler && IsBattlerAlive(i) && GetBattlerAbility(i) == ability)
            return i + 1;
    }

    return 0;
}

u32 IsAbilityPreventingEscape(u32 battler)
{
    if (B_GHOSTS_ESCAPE >= GEN_6 && IS_BATTLER_OF_TYPE(battler, TYPE_GHOST))
        return 0;

    bool32 isBattlerGrounded = IsBattlerGrounded(battler, GetBattlerAbility(battler), GetBattlerHoldEffect(battler));
    for (u32 battlerDef = 0; battlerDef < gBattlersCount; battlerDef++)
    {
        if (battler == battlerDef || IsBattlerAlly(battler, battlerDef))
            continue;

        enum Ability ability = GetBattlerAbility(battlerDef);

        if (ability == ABILITY_SHADOW_TAG && (B_SHADOW_TAG_ESCAPE <= GEN_3 || GetBattlerAbility(battler) != ABILITY_SHADOW_TAG))
            return battlerDef + 1;

        if (ability == ABILITY_ARENA_TRAP && isBattlerGrounded)
            return battlerDef + 1;

        if (ability == ABILITY_MAGNET_PULL && IS_BATTLER_OF_TYPE(battler, TYPE_STEEL))
            return battlerDef + 1;
    }

    return 0;
}

bool32 CanBattlerEscape(u32 battler) // no ability check
{
    if (gBattleStruct->battlerState[battler].commanderSpecies != SPECIES_NONE)
        return FALSE;
    else if (B_GHOSTS_ESCAPE >= GEN_6 && IS_BATTLER_OF_TYPE(battler, TYPE_GHOST))
        return TRUE;
    else if (gBattleMons[battler].volatiles.escapePrevention)
        return FALSE;
    else if (gBattleMons[battler].volatiles.wrapped)
        return FALSE;
    else if (gBattleMons[battler].volatiles.root)
        return FALSE;
    else if (gFieldStatuses & STATUS_FIELD_FAIRY_LOCK)
        return FALSE;
    else if (gBattleMons[battler].volatiles.semiInvulnerable == STATE_SKY_DROP)
        return FALSE;
    else
        return TRUE;
}

void BattleScriptExecute(const u8 *BS_ptr)
{
    gBattlescriptCurrInstr = BS_ptr;
    gBattleResources->battleCallbackStack->function[gBattleResources->battleCallbackStack->size++] = gBattleMainFunc;
    gBattleMainFunc = RunBattleScriptCommands_PopCallbacksStack;
    gCurrentActionFuncId = 0;
}

void BattleScriptPushCursorAndCallback(const u8 *BS_ptr)
{
    BattleScriptCall(BS_ptr);
    gBattleResources->battleCallbackStack->function[gBattleResources->battleCallbackStack->size++] = gBattleMainFunc;
    gBattleMainFunc = RunBattleScriptCommands;
}

bool32 IsBattlerTerrainAffected(u32 battler, enum Ability ability, enum HoldEffect holdEffect, u32 terrainFlag)
{
    if (!(gFieldStatuses & terrainFlag))
        return FALSE;
    if (IsSemiInvulnerable(battler, CHECK_ALL))
        return FALSE;

    return IsBattlerGrounded(battler, ability, holdEffect);
}

bool32 CanBeSlept(u32 battlerAtk, u32 battlerDef, enum Ability abilityDef, enum SleepClauseBlock isBlockedBySleepClause)
{
    if (IsSleepClauseActiveForSide(GetBattlerSide(battlerDef)) && isBlockedBySleepClause != NOT_BLOCKED_BY_SLEEP_CLAUSE)
        return FALSE;

    if (isBlockedBySleepClause == NOT_BLOCKED_BY_SLEEP_CLAUSE)
        gBattleStruct->sleepClauseNotBlocked = TRUE;

    bool32 effect = FALSE;
    if (CanSetNonVolatileStatus(
            battlerAtk,
            battlerDef,
            ABILITY_NONE, // attacker ability does not matter
            abilityDef,
            MOVE_EFFECT_SLEEP, // also covers yawn
            CHECK_TRIGGER))
        effect = TRUE;

    gBattleStruct->sleepClauseNotBlocked = FALSE;
    return effect;
}

bool32 CanBePoisoned(u32 battlerAtk, u32 battlerDef, enum Ability abilityAtk, enum Ability abilityDef)
{
    if (CanSetNonVolatileStatus(
            battlerAtk,
            battlerDef,
            abilityAtk,
            abilityDef,
            MOVE_EFFECT_TOXIC, // also covers poison
            CHECK_TRIGGER))
        return TRUE;
    return FALSE;
}

// TODO: check order of battlerAtk and battlerDef
bool32 CanBeBurned(u32 battlerAtk, u32 battlerDef, enum Ability abilityDef)
{
    if (CanSetNonVolatileStatus(
            battlerAtk,
            battlerDef,
            ABILITY_NONE, // attacker ability does not matter
            abilityDef,
            MOVE_EFFECT_BURN,
            CHECK_TRIGGER))
        return TRUE;
    return FALSE;
}

bool32 CanBeParalyzed(u32 battlerAtk, u32 battlerDef, enum Ability abilityDef)
{
    if (CanSetNonVolatileStatus(
            battlerAtk,
            battlerDef,
            ABILITY_NONE, // attacker ability does not matter
            abilityDef,
            MOVE_EFFECT_PARALYSIS,
            CHECK_TRIGGER))
        return TRUE;
    return FALSE;
}

bool32 CanBeFrozen(u32 battlerAtk, u32 battlerDef, enum Ability abilityDef)
{
    if (CanSetNonVolatileStatus(
            battlerAtk,
            battlerDef,
            ABILITY_NONE, // attacker ability does not matter
            abilityDef,
            MOVE_EFFECT_FREEZE,
            CHECK_TRIGGER))
        return TRUE;
    return FALSE;
}
// Unused, technically also redundant because it is just a copy of CanBeFrozen
bool32 CanGetFrostbite(u32 battlerAtk, u32 battlerDef, enum Ability abilityDef)
{
    if (CanSetNonVolatileStatus(
            battlerAtk,
            battlerDef,
            ABILITY_NONE, // attacker ability does not matter
            abilityDef,
            MOVE_EFFECT_FREEZE_OR_FROSTBITE, // also covers frostbite
            CHECK_TRIGGER))
        return TRUE;
    return FALSE;
}

bool32 CanSetNonVolatileStatus(u32 battlerAtk, u32 battlerDef, enum Ability abilityAtk, enum Ability abilityDef, enum MoveEffect effect, enum FunctionCallOption option)
{
    const u8 *battleScript = NULL;
    u32 sideBattler = ABILITY_NONE;
    bool32 abilityAffected = FALSE;

    // Move specific checks
    switch (effect)
    {
    case MOVE_EFFECT_POISON:
    case MOVE_EFFECT_TOXIC:
        if (gBattleMons[battlerDef].status1 & (STATUS1_POISON | STATUS1_TOXIC_POISON))
        {
            battleScript = BattleScript_AlreadyPoisoned;
        }
        else if (abilityAtk != ABILITY_CORROSION && IS_BATTLER_ANY_TYPE(battlerDef, TYPE_POISON, TYPE_STEEL))
        {
            battleScript = BattleScript_NotAffected;
        }
        else if ((sideBattler = IsAbilityOnSide(battlerDef, ABILITY_PASTEL_VEIL)))
        {
            abilityAffected = TRUE;
            battlerDef = sideBattler - 1;
            abilityDef = ABILITY_PASTEL_VEIL;
            battleScript = BattleScript_ImmunityProtected;
        }
        else if (abilityDef == ABILITY_IMMUNITY)
        {
            abilityAffected = TRUE;
            battleScript = BattleScript_ImmunityProtected;
        }
        break;
    case MOVE_EFFECT_PARALYSIS:
        if (gBattleMons[battlerDef].status1 & STATUS1_PARALYSIS)
        {
            battleScript = BattleScript_AlreadyParalyzed;
        }
        else if (GetGenConfig(GEN_CONFIG_PARALYZE_ELECTRIC) >= GEN_6 && IS_BATTLER_OF_TYPE(battlerDef, TYPE_ELECTRIC))
        {
            battleScript = BattleScript_NotAffected;
        }
        else if (option == RUN_SCRIPT // Check only important during battle execution for moves
              && CalcTypeEffectivenessMultiplierHelper(gCurrentMove, GetBattleMoveType(gCurrentMove), battlerAtk, battlerDef, abilityAtk, abilityDef, TRUE)
              && gBattleStruct->moveResultFlags[battlerDef] & MOVE_RESULT_NO_EFFECT)
        {
            battleScript = BattleScript_ButItFailed;
        }
        else if (abilityDef == ABILITY_LIMBER)
        {
            abilityAffected = TRUE;
            battleScript = BattleScript_ImmunityProtected;
        }
        break;
    case MOVE_EFFECT_BURN:
        if (gBattleMons[battlerDef].status1 & STATUS1_BURN)
        {
            battleScript = BattleScript_AlreadyBurned;
        }
        else if (IS_BATTLER_OF_TYPE(battlerDef, TYPE_FIRE))
        {
            battleScript = BattleScript_NotAffected;
        }
        else if (abilityDef == ABILITY_WATER_VEIL || abilityDef == ABILITY_WATER_BUBBLE)
        {
            abilityAffected = TRUE;
            battleScript = BattleScript_ImmunityProtected;
        }
        else if (abilityDef == ABILITY_THERMAL_EXCHANGE)
        {
            abilityAffected = TRUE;
            battleScript = BattleScript_AbilityProtectsDoesntAffect;
        }
        break;
    case MOVE_EFFECT_SLEEP:
        if (gBattleMons[battlerDef].status1 & STATUS1_SLEEP)
        {
            battleScript = BattleScript_AlreadyAsleep;
        }
        else if (UproarWakeUpCheck(battlerDef))
        {
            battleScript = BattleScript_CantMakeAsleep;
        }
        else if (!gBattleStruct->sleepClauseNotBlocked && CanSleepDueToSleepClause(battlerAtk, battlerDef, option))
        {
            battleScript = BattleScript_SleepClauseBlocked;
        }
        else if (IsBattlerTerrainAffected(battlerDef, abilityDef, GetBattlerHoldEffect(battlerDef), STATUS_FIELD_ELECTRIC_TERRAIN))
        {
            battleScript = BattleScript_ElectricTerrainPrevents;
        }
        else if ((sideBattler = IsAbilityOnSide(battlerDef, ABILITY_SWEET_VEIL)))
        {
            abilityAffected = TRUE;
            battlerDef = sideBattler - 1;
            abilityDef = ABILITY_SWEET_VEIL;
            battleScript = BattleScript_ImmunityProtected;
        }
        else if (abilityDef == ABILITY_VITAL_SPIRIT || abilityDef == ABILITY_INSOMNIA)
        {
            abilityAffected = TRUE;
            battleScript = BattleScript_PrintAbilityMadeIneffective;
        }
        break;
    case MOVE_EFFECT_FREEZE:
    case MOVE_EFFECT_FROSTBITE:
        if (gBattleMons[battlerDef].status1 & (STATUS1_FREEZE | STATUS1_FROSTBITE))
        {
            battleScript = BattleScript_AlreadyBurned;
        }
        else if (IS_BATTLER_OF_TYPE(battlerDef, TYPE_ICE) || IsBattlerWeatherAffected(battlerDef, B_WEATHER_SUN))
        {
            battleScript = BattleScript_NotAffected;
        }
        else if (abilityDef == ABILITY_MAGMA_ARMOR)
        {
            abilityAffected = TRUE;
            battleScript = BattleScript_NotAffected;
        }
        break;
    default:
        break;
    }

    if (IsNonVolatileStatusBlocked(battlerDef, abilityDef, abilityAffected, battleScript, option))
        return FALSE;

    // Checks that apply to all non volatile statuses
    if (abilityDef == ABILITY_COMATOSE
     || abilityDef == ABILITY_PURIFYING_SALT)
    {
        abilityAffected = TRUE;
        battleScript = BattleScript_AbilityProtectsDoesntAffect;
    }
    else if (IsBattlerTerrainAffected(battlerDef, abilityDef, GetBattlerHoldEffect(battlerDef), STATUS_FIELD_MISTY_TERRAIN))
    {
        battleScript = BattleScript_MistyTerrainPrevents;
    }
    else if (IsLeafGuardProtected(battlerDef, abilityDef))
    {
        abilityAffected = TRUE;
        battleScript = BattleScript_AbilityProtectsDoesntAffect;
    }
    else if (IsShieldsDownProtected(battlerDef, abilityDef))
    {
        abilityAffected = TRUE;
        battleScript = BattleScript_AbilityProtectsDoesntAffect;
    }
    else if ((sideBattler = IsFlowerVeilProtected(battlerDef)))
    {
        abilityAffected = TRUE;
        battlerDef = sideBattler - 1;
        abilityDef = ABILITY_FLOWER_VEIL;
        battleScript = BattleScript_FlowerVeilProtects;
    }
    else if (gSideStatuses[GetBattlerSide(battlerDef)] & SIDE_STATUS_SAFEGUARD)
    {
        battleScript = BattleScript_SafeguardProtected;
    }
    else if (gBattleMons[battlerDef].status1 & STATUS1_ANY)
    {
        battleScript = BattleScript_ButItFailed;
    }

    if (IsNonVolatileStatusBlocked(battlerDef, abilityDef, abilityAffected, battleScript, option))
        return FALSE;

    return TRUE;
}

static bool32 IsNonVolatileStatusBlocked(u32 battlerDef, enum Ability abilityDef, enum Ability abilityAffected, const u8 *battleScript, enum FunctionCallOption option)
{
    if (battleScript != NULL)
    {
        if (option == RUN_SCRIPT)
        {
            if (battleScript != BattleScript_NotAffected)
                gBattleStruct->moveResultFlags[battlerDef] |= MOVE_RESULT_FAILED;

            if (abilityAffected)
            {
                gLastUsedAbility = abilityDef;
                gBattleScripting.battler = gBattlerAbility = battlerDef;
                RecordAbilityBattle(battlerDef, abilityDef);
            }

            gBattlescriptCurrInstr = battleScript;
        }

        return TRUE;
    }

    return FALSE;
}

static bool32 CanSleepDueToSleepClause(u32 battlerAtk, u32 battlerDef, enum FunctionCallOption option)
{
    // Can freely sleep own partner
    if (IsDoubleBattle() && IsSleepClauseEnabled() && IsBattlerAlly(battlerAtk, battlerDef))
    {
        if (option == RUN_SCRIPT)
            gBattleStruct->battlerState[battlerDef].sleepClauseEffectExempt = TRUE;
        return FALSE;
    }

    if (option == RUN_SCRIPT)
        gBattleStruct->battlerState[battlerDef].sleepClauseEffectExempt = FALSE;
    // Can't sleep if clause is active otherwise
    if (IsSleepClauseActiveForSide(GetBattlerSide(battlerDef)))
        return TRUE;

    return FALSE;
}

bool32 CanBeConfused(u32 battler)
{
    enum Ability ability = GetBattlerAbility(battler);
    if (gBattleMons[battler].volatiles.confusionTurns > 0
     || IsBattlerTerrainAffected(battler, ability, GetBattlerHoldEffect(battler), STATUS_FIELD_MISTY_TERRAIN)
     || IsAbilityAndRecord(battler, ability, ABILITY_OWN_TEMPO))
        return FALSE;
    return TRUE;
}

// second argument is 1/X of current hp compared to max hp
bool32 HasEnoughHpToEatBerry(u32 battler, enum Ability ability, u32 hpFraction, u32 itemId)
{
    if (!IsBattlerAlive(battler))
        return FALSE;
    if (gBattleScripting.overrideBerryRequirements)
        return TRUE;
    if (gBattleMons[battler].hp <= gBattleMons[battler].maxHP / hpFraction)
        return TRUE;

    if (hpFraction <= 4 && GetItemPocket(itemId) == POCKET_BERRIES
         && gBattleMons[battler].hp <= gBattleMons[battler].maxHP / 2
         && IsAbilityAndRecord(battler, GetBattlerAbility(battler), ABILITY_GLUTTONY))
        return TRUE;

    return FALSE;
}

void ClearVariousBattlerFlags(u32 battler)
{
    gDisableStructs[battler].furyCutterCounter = 0;
    gBattleMons[battler].volatiles.destinyBond = 0;
    gBattleMons[battler].volatiles.glaiveRush = FALSE;
    gBattleMons[battler].volatiles.grudge = FALSE;
}

void HandleAction_RunBattleScript(void) // identical to RunBattleScriptCommands
{
    if (gBattleControllerExecFlags == 0)
        gBattleScriptingCommandsTable[*gBattlescriptCurrInstr]();
}

u32 SetRandomTarget(u32 battlerAtk)
{
    u32 target;
    static const u8 targets[2][2] =
    {
        [B_SIDE_PLAYER] = {B_POSITION_OPPONENT_LEFT, B_POSITION_OPPONENT_RIGHT},
        [B_SIDE_OPPONENT] = {B_POSITION_PLAYER_LEFT, B_POSITION_PLAYER_RIGHT},
    };

    if (IsDoubleBattle())
    {
        target = GetBattlerAtPosition(targets[GetBattlerSide(battlerAtk)][RandomUniform(RNG_RANDOM_TARGET, 0, 1)]);
        if (!IsBattlerAlive(target))
            target ^= BIT_FLANK;
    }
    else
    {
        target = GetBattlerAtPosition(targets[GetBattlerSide(battlerAtk)][0]);
    }

    return target;
}

u32 GetBattleMoveTarget(u16 move, u8 setTarget)
{
    u8 targetBattler = 0;
    u32 moveTarget, side;
    enum Type moveType = GetBattleMoveType(move);

    if (setTarget != NO_TARGET_OVERRIDE)
        moveTarget = setTarget - 1;
    else
        moveTarget = GetBattlerMoveTargetType(gBattlerAttacker, move);

    switch (moveTarget)
    {
    case MOVE_TARGET_SELECTED:
    case MOVE_TARGET_OPPONENT:
        side = BATTLE_OPPOSITE(GetBattlerSide(gBattlerAttacker));
        if (IsAffectedByFollowMe(gBattlerAttacker, side, move))
        {
            targetBattler = gSideTimers[side].followmeTarget;
        }
        else
        {
            enum Ability battlerAbilityOnField = 0;

            targetBattler = SetRandomTarget(gBattlerAttacker);
            if (moveType == TYPE_ELECTRIC && GetBattlerAbility(targetBattler) != ABILITY_LIGHTNING_ROD)
            {
                if (B_REDIRECT_ABILITY_ALLIES >= GEN_4)
                    battlerAbilityOnField = IsAbilityOnField(ABILITY_LIGHTNING_ROD);
                else
                    battlerAbilityOnField = IsAbilityOnOpposingSide(targetBattler, ABILITY_LIGHTNING_ROD);

                if (battlerAbilityOnField > 0 && (battlerAbilityOnField - 1) != gBattlerAttacker)
                {
                    targetBattler = battlerAbilityOnField - 1;
                    RecordAbilityBattle(targetBattler, gBattleMons[targetBattler].ability);
                    gSpecialStatuses[targetBattler].abilityRedirected = TRUE;
                }
            }
            else if (moveType == TYPE_WATER && GetBattlerAbility(targetBattler) != ABILITY_STORM_DRAIN)
            {
                if (B_REDIRECT_ABILITY_ALLIES >= GEN_4)
                    battlerAbilityOnField = IsAbilityOnField(ABILITY_STORM_DRAIN);
                else
                    battlerAbilityOnField = IsAbilityOnOpposingSide(targetBattler, ABILITY_STORM_DRAIN);

                if (battlerAbilityOnField > 0 && (battlerAbilityOnField - 1) != gBattlerAttacker)
                {
                    targetBattler = battlerAbilityOnField - 1;
                    RecordAbilityBattle(targetBattler, gBattleMons[targetBattler].ability);
                    gSpecialStatuses[targetBattler].abilityRedirected = TRUE;
                }
            }
        }
        break;
    case MOVE_TARGET_DEPENDS:
    case MOVE_TARGET_BOTH:
    case MOVE_TARGET_FOES_AND_ALLY:
        targetBattler = GetOpposingSideBattler(gBattlerAttacker);
        if (IsDoubleBattle() && !IsBattlerAlive(targetBattler))
            targetBattler ^= BIT_FLANK;
        break;
    case MOVE_TARGET_OPPONENTS_FIELD:
        targetBattler = GetOpposingSideBattler(gBattlerAttacker);
        break;
    case MOVE_TARGET_RANDOM:
        side = BATTLE_OPPOSITE(GetBattlerSide(gBattlerAttacker));
        if (IsAffectedByFollowMe(gBattlerAttacker, side, move))
            targetBattler = gSideTimers[side].followmeTarget;
        else if (IsDoubleBattle() && moveTarget & MOVE_TARGET_RANDOM)
            targetBattler = SetRandomTarget(gBattlerAttacker);
        else
            targetBattler = GetOpposingSideBattler(gBattlerAttacker);
        break;
    case MOVE_TARGET_USER:
    default:
        targetBattler = gBattlerAttacker;
        break;
    case MOVE_TARGET_ALLY:
        if (IsBattlerAlive(BATTLE_PARTNER(gBattlerAttacker)))
            targetBattler = BATTLE_PARTNER(gBattlerAttacker);
        else
            targetBattler = gBattlerAttacker;
        break;
    }

    gBattleStruct->moveTarget[gBattlerAttacker] = targetBattler;

    return targetBattler;
}

u8 GetAttackerObedienceForAction()
{
    s32 rnd;
    s32 calc;
    u8 obedienceLevel = 0;
    u8 levelReferenced;

    if (gBattleTypeFlags & (BATTLE_TYPE_LINK | BATTLE_TYPE_RECORDED_LINK))
        return OBEYS;
    if (BattlerHasAi(gBattlerAttacker))
        return OBEYS;

    if (gBattleTypeFlags & BATTLE_TYPE_INGAME_PARTNER && GetBattlerPosition(gBattlerAttacker) == B_POSITION_PLAYER_RIGHT)
        return OBEYS;
    if (gBattleTypeFlags & BATTLE_TYPE_FRONTIER)
        return OBEYS;
    if (gBattleTypeFlags & BATTLE_TYPE_RECORDED)
        return OBEYS;
    if (B_OBEDIENCE_MECHANICS < GEN_8 && !IsOtherTrainer(gBattleMons[gBattlerAttacker].otId, gBattleMons[gBattlerAttacker].otName))
        return OBEYS;
    if (FlagGet(FLAG_BADGE08_GET)) // Rain Badge, ignore obedience altogether
        return OBEYS;

    obedienceLevel = 10;

    if (FlagGet(FLAG_BADGE01_GET)) // Stone Badge
        obedienceLevel = 20;
    if (FlagGet(FLAG_BADGE02_GET)) // Knuckle Badge
        obedienceLevel = 30;
    if (FlagGet(FLAG_BADGE03_GET)) // Dynamo Badge
        obedienceLevel = 40;
    if (FlagGet(FLAG_BADGE04_GET)) // Heat Badge
        obedienceLevel = 50;
    if (FlagGet(FLAG_BADGE05_GET)) // Balance Badge
        obedienceLevel = 60;
    if (FlagGet(FLAG_BADGE06_GET)) // Feather Badge
        obedienceLevel = 70;
    if (FlagGet(FLAG_BADGE07_GET)) // Mind Badge
        obedienceLevel = 80;

    if (B_OBEDIENCE_MECHANICS >= GEN_8
     && !IsOtherTrainer(gBattleMons[gBattlerAttacker].otId, gBattleMons[gBattlerAttacker].otName))
        levelReferenced = gBattleMons[gBattlerAttacker].metLevel;
    else
        levelReferenced = gBattleMons[gBattlerAttacker].level;

    if (levelReferenced <= obedienceLevel)
        return OBEYS;

    rnd = Random();
    calc = (levelReferenced + obedienceLevel) * (rnd & 255) >> 8;
    if (calc < obedienceLevel)
        return OBEYS;

    //  Clear the Z-Move flags if the battler is disobedient as to not waste the Z-Move
    if (GetActiveGimmick(gBattlerAttacker) == GIMMICK_Z_MOVE)
    {
        gBattleStruct->gimmick.activated[gBattlerAttacker][GIMMICK_Z_MOVE] = FALSE;
        gBattleStruct->gimmick.activeGimmick[GetBattlerSide(gBattlerAttacker)][gBattlerPartyIndexes[gBattlerAttacker]] = GIMMICK_NONE;
    }

    // is not obedient
    enum BattleMoveEffects moveEffect = GetMoveEffect(gCurrentMove);
    if (moveEffect == EFFECT_RAGE)
        gBattleMons[gBattlerAttacker].volatiles.rage = FALSE;
    if (gBattleMons[gBattlerAttacker].status1 & STATUS1_SLEEP && (moveEffect == EFFECT_SNORE || moveEffect == EFFECT_SLEEP_TALK))
        return DISOBEYS_WHILE_ASLEEP;

    calc = (levelReferenced + obedienceLevel) * ((rnd >> 8) & 255) >> 8;
    if (calc < obedienceLevel)
    {
        calc = CheckMoveLimitations(gBattlerAttacker, 1u << gCurrMovePos, MOVE_LIMITATIONS_ALL);
        if (calc == ALL_MOVES_MASK) // all moves cannot be used
            return DISOBEYS_LOAFS;
        else // use a random move
            do
                gCurrMovePos = gChosenMovePos = MOD(Random(), MAX_MON_MOVES);
            while ((1u << gCurrMovePos) & calc);
        return DISOBEYS_RANDOM_MOVE;
    }
    else
    {
        obedienceLevel = levelReferenced - obedienceLevel;

        calc = ((rnd >> 16) & 255);
        if (calc < obedienceLevel && CanBeSlept(gBattlerAttacker, gBattlerAttacker, GetBattlerAbility(gBattlerAttacker), NOT_BLOCKED_BY_SLEEP_CLAUSE))
        {
            // try putting asleep
            int i;
            for (i = 0; i < gBattlersCount; i++)
                if (gBattleMons[i].volatiles.uproarTurns)
                    break;
            if (i == gBattlersCount)
                return DISOBEYS_FALL_ASLEEP;
        }
        calc -= obedienceLevel;
        if (calc < obedienceLevel)
            return DISOBEYS_HITS_SELF;
        else
            return DISOBEYS_LOAFS;
    }
}

enum HoldEffect GetBattlerHoldEffect(u32 battler)
{
    return GetBattlerHoldEffectInternal(battler, GetBattlerAbility(battler));
}

enum HoldEffect GetBattlerHoldEffectIgnoreAbility(u32 battler)
{
    return GetBattlerHoldEffectInternal(battler, ABILITY_NONE);
}

enum HoldEffect GetBattlerHoldEffectInternal(u32 battler, u32 ability)
{
    if (gBattleMons[battler].volatiles.embargo)
        return HOLD_EFFECT_NONE;
    if (gFieldStatuses & STATUS_FIELD_MAGIC_ROOM)
        return HOLD_EFFECT_NONE;
    if (ability == ABILITY_KLUTZ && !gBattleMons[battler].volatiles.gastroAcid)
        return HOLD_EFFECT_NONE;

    gPotentialItemEffectBattler = battler;

    if (gBattleMons[battler].item == ITEM_ENIGMA_BERRY_E_READER)
        return gEnigmaBerries[battler].holdEffect;
    else
        return GetItemHoldEffect(gBattleMons[battler].item);
}

enum HoldEffect GetBattlerHoldEffectIgnoreNegation(u32 battler)
{
    gPotentialItemEffectBattler = battler;
    if (gBattleMons[battler].item == ITEM_ENIGMA_BERRY_E_READER)
        return gEnigmaBerries[battler].holdEffect;
    else
        return GetItemHoldEffect(gBattleMons[battler].item);
}

u32 GetBattlerHoldEffectParam(u32 battler)
{
    if (gBattleMons[battler].item == ITEM_ENIGMA_BERRY_E_READER)
        return gEnigmaBerries[battler].holdEffectParam;
    else
        return GetItemHoldEffectParam(gBattleMons[battler].item);
}

bool32 CanBattlerAvoidContactEffects(u32 battlerAtk, u32 battlerDef, enum Ability abilityAtk, enum HoldEffect holdEffectAtk, u32 move)
{
    if (holdEffectAtk == HOLD_EFFECT_PROTECTIVE_PADS)
    {
        RecordItemEffectBattle(battlerAtk, HOLD_EFFECT_PROTECTIVE_PADS);
        return TRUE;
    }

    return !IsMoveMakingContact(battlerAtk, battlerDef, abilityAtk, holdEffectAtk, move);
}

bool32 IsMoveMakingContact(u32 battlerAtk, u32 battlerDef, enum Ability abilityAtk, enum HoldEffect holdEffectAtk, u32 move)
{
    if (!(MoveMakesContact(move) || (GetMoveEffect(move) == EFFECT_SHELL_SIDE_ARM
                                  && gBattleStruct->shellSideArmCategory[battlerAtk][battlerDef] == DAMAGE_CATEGORY_PHYSICAL)))
    {
        return FALSE;
    }
    else if (holdEffectAtk == HOLD_EFFECT_PUNCHING_GLOVE && IsPunchingMove(move))
    {
        RecordItemEffectBattle(battlerAtk, HOLD_EFFECT_PUNCHING_GLOVE);
        return FALSE;
    }
    else if (abilityAtk == ABILITY_LONG_REACH)
    {
        RecordAbilityBattle(battlerAtk, ABILITY_LONG_REACH);
        return FALSE;
    }
    return TRUE;
}

static inline bool32 IsSideProtected(u32 battler, enum ProtectMethod method)
{
    return gProtectStructs[battler].protected == method
        || gProtectStructs[BATTLE_PARTNER(battler)].protected == method;
}

bool32 IsBattlerProtected(u32 battlerAtk, u32 battlerDef, u32 move)
{
    if (gProtectStructs[battlerDef].protected == PROTECT_NONE
     && gProtectStructs[BATTLE_PARTNER(battlerDef)].protected == PROTECT_NONE)
        return FALSE;

    if (gProtectStructs[battlerDef].protected != PROTECT_MAX_GUARD && !MoveIgnoresProtect(move))
    {
        if (IsZMove(move) || IsMaxMove(move))
            return FALSE; // Z-Moves and Max Moves bypass protection (except Max Guard).
        if (GetBattlerAbility(battlerAtk) == ABILITY_UNSEEN_FIST
         && IsMoveMakingContact(battlerAtk, battlerDef, ABILITY_UNSEEN_FIST, GetBattlerHoldEffect(battlerAtk), move))
            return FALSE;
    }

    bool32 isProtected = FALSE;

    if (IsSideProtected(battlerDef, PROTECT_CRAFTY_SHIELD)
     && IsBattleMoveStatus(move)
     && GetMoveEffect(move) != EFFECT_COACHING)
        isProtected = TRUE;
    else if (MoveIgnoresProtect(move))
        isProtected = FALSE;
    else if (IsSideProtected(battlerDef, PROTECT_WIDE_GUARD) && IsSpreadMove(GetBattlerMoveTargetType(battlerAtk, move)))
        isProtected = TRUE;
    else if (gProtectStructs[battlerDef].protected == PROTECT_NORMAL)
        isProtected = TRUE;
    else if (gProtectStructs[battlerDef].protected == PROTECT_SPIKY_SHIELD)
        isProtected = TRUE;
    else if (gProtectStructs[battlerDef].protected == PROTECT_MAX_GUARD)
        isProtected = TRUE;
    else if (gProtectStructs[battlerDef].protected == PROTECT_BANEFUL_BUNKER)
        isProtected = TRUE;
    else if (gProtectStructs[battlerDef].protected == PROTECT_BURNING_BULWARK)
        isProtected = TRUE;
    else if (gProtectStructs[battlerDef].protected == PROTECT_OBSTRUCT && !IsBattleMoveStatus(move))
        isProtected = TRUE;
    else if (gProtectStructs[battlerDef].protected == PROTECT_SILK_TRAP && !IsBattleMoveStatus(move))
        isProtected = TRUE;
    else if (gProtectStructs[battlerDef].protected == PROTECT_KINGS_SHIELD && !IsBattleMoveStatus(move))
        isProtected = TRUE;
    else if (IsSideProtected(battlerDef, PROTECT_QUICK_GUARD) && GetChosenMovePriority(battlerAtk, GetBattlerAbility(battlerAtk)) > 0)
        isProtected = TRUE;
    else if (IsSideProtected(battlerDef, PROTECT_MAT_BLOCK) && !IsBattleMoveStatus(move))
        isProtected = TRUE;
    else
        isProtected = FALSE;

    if (isProtected)
        gBattleStruct->missStringId[battlerDef] = gBattleCommunication[MISS_TYPE] = B_MSG_PROTECTED;

    return isProtected;
}

u32 GetProtectType(enum ProtectMethod method)
{
    switch (method)
    {
    case PROTECT_NONE:
        return PROTECT_TYPE_NONE;
    case PROTECT_NORMAL:
    case PROTECT_SPIKY_SHIELD:
    case PROTECT_KINGS_SHIELD:
    case PROTECT_BANEFUL_BUNKER:
    case PROTECT_BURNING_BULWARK:
    case PROTECT_OBSTRUCT:
    case PROTECT_SILK_TRAP:
    case PROTECT_MAX_GUARD:
        return PROTECT_TYPE_SINGLE;
    case PROTECT_WIDE_GUARD:
    case PROTECT_QUICK_GUARD:
    case PROTECT_CRAFTY_SHIELD:
    case PROTECT_MAT_BLOCK:
        return PROTECT_TYPE_SIDE;
    }

    return FALSE;
}

enum InverseBattleCheck
{
    INVERSE_BATTLE,
    NOT_INVERSE_BATTLE
};

enum IronBallCheck
{
    CHECK_IRON_BALL,
    IGNORE_IRON_BALL
};

// Only called directly when calculating damage type effectiveness, and Iron Ball's type effectiveness mechanics
static bool32 IsBattlerGroundedInverseCheck(u32 battler, enum Ability ability, enum HoldEffect holdEffect, enum InverseBattleCheck checkInverse, bool32 isAnticipation)
{
    if (holdEffect == HOLD_EFFECT_IRON_BALL)
        return TRUE;
    if (gFieldStatuses & STATUS_FIELD_GRAVITY && isAnticipation == FALSE)
        return TRUE;
    if (B_ROOTED_GROUNDING >= GEN_4 && gBattleMons[battler].volatiles.root)
        return TRUE;
    if (gBattleMons[battler].volatiles.smackDown)
        return TRUE;
    if (gBattleMons[battler].volatiles.telekinesis)
        return FALSE;
    if (gBattleMons[battler].volatiles.magnetRise)
        return FALSE;
    if (holdEffect == HOLD_EFFECT_AIR_BALLOON)
        return FALSE;
    if (ability == ABILITY_LEVITATE)
        return FALSE;
    if (IS_BATTLER_OF_TYPE(battler, TYPE_FLYING) && (checkInverse != INVERSE_BATTLE || !FlagGet(B_FLAG_INVERSE_BATTLE)))
        return FALSE;
    return TRUE;
}

bool32 IsBattlerGrounded(u32 battler, enum Ability ability, enum HoldEffect holdEffect)
{
    return IsBattlerGroundedInverseCheck(battler, ability, holdEffect, NOT_INVERSE_BATTLE, FALSE);
}

u32 GetMoveSlot(u16 *moves, u32 move)
{
    u32 i;

    for (i = 0; i < MAX_MON_MOVES; i++)
    {
        if (moves[i] == move)
            break;
    }
    return i;
}

u32 GetBattlerWeight(u32 battler)
{
    u32 i;
    u32 weight = GetSpeciesWeight(gBattleMons[battler].species);
    enum Ability ability = GetBattlerAbility(battler);
    enum HoldEffect holdEffect = GetBattlerHoldEffect(battler);

    if (ability == ABILITY_HEAVY_METAL)
        weight *= 2;
    else if (ability == ABILITY_LIGHT_METAL)
        weight /= 2;

    if (holdEffect == HOLD_EFFECT_FLOAT_STONE)
        weight /= 2;

    for (i = 0; i < gDisableStructs[battler].autotomizeCount; i++)
    {
        if (weight > 1000)
        {
            weight -= 1000;
        }
        else if (weight <= 1000)
        {
            weight = 1;
            break;
        }
    }

    if (weight == 0)
        weight = 1;

    return weight;
}

u32 CountBattlerStatIncreases(u32 battler, bool32 countEvasionAcc)
{
    enum Stat i;
    u32 count = 0;

    for (i = 0; i < NUM_BATTLE_STATS; i++)
    {
        if ((i == STAT_ACC || i == STAT_EVASION) && !countEvasionAcc)
            continue;
        if (gBattleMons[battler].statStages[i] > DEFAULT_STAT_STAGE) // Stat is increased.
            count += gBattleMons[battler].statStages[i] - DEFAULT_STAT_STAGE;
    }

    return count;
}

u32 GetMoveTargetCount(struct DamageContext *ctx)
{
    u32 battlerAtk = ctx->battlerAtk;
    u32 battlerDef = ctx->battlerDef;
    u32 move = ctx->move;

    switch (GetBattlerMoveTargetType(battlerAtk, move))
    {
    case MOVE_TARGET_BOTH:
        return !(gAbsentBattlerFlags & (1u << battlerDef))
             + !(gAbsentBattlerFlags & (1u << BATTLE_PARTNER(battlerDef)));
    case MOVE_TARGET_FOES_AND_ALLY:
        return !(gAbsentBattlerFlags & (1u << battlerDef))
             + !(gAbsentBattlerFlags & (1u << BATTLE_PARTNER(battlerDef)))
             + !(gAbsentBattlerFlags & (1u << BATTLE_PARTNER(battlerAtk)));
    case MOVE_TARGET_OPPONENTS_FIELD:
        return 1;
    case MOVE_TARGET_DEPENDS:
    case MOVE_TARGET_SELECTED:
    case MOVE_TARGET_RANDOM:
    case MOVE_TARGET_OPPONENT:
        return IsBattlerAlive(battlerDef);
    case MOVE_TARGET_USER:
        return IsBattlerAlive(battlerAtk);
    default:
        return 0;
    }
}

static const u8 sFlailHpScaleToPowerTable[] =
{
    1, 200,
    4, 150,
    9, 100,
    16, 80,
    32, 40,
    48, 20
};

// format: min. weight (hectograms), base power
static const u16 sWeightToDamageTable[] =
{
    100, 20,
    250, 40,
    500, 60,
    1000, 80,
    2000, 100,
    0xFFFF, 0xFFFF
};

static const u8 sSpeedDiffPowerTable[] = {40, 60, 80, 120, 150};
static const u8 sHeatCrashPowerTable[] = {40, 40, 60, 80, 100, 120};
static const u8 sTrumpCardPowerTable[] = {200, 80, 60, 50, 40};

const struct TypePower gNaturalGiftTable[] =
{
    [ITEM_TO_BERRY(ITEM_CHERI_BERRY)] = {TYPE_FIRE, 80},
    [ITEM_TO_BERRY(ITEM_CHESTO_BERRY)] = {TYPE_WATER, 80},
    [ITEM_TO_BERRY(ITEM_PECHA_BERRY)] = {TYPE_ELECTRIC, 80},
    [ITEM_TO_BERRY(ITEM_RAWST_BERRY)] = {TYPE_GRASS, 80},
    [ITEM_TO_BERRY(ITEM_ASPEAR_BERRY)] = {TYPE_ICE, 80},
    [ITEM_TO_BERRY(ITEM_LEPPA_BERRY)] = {TYPE_FIGHTING, 80},
    [ITEM_TO_BERRY(ITEM_ORAN_BERRY)] = {TYPE_POISON, 80},
    [ITEM_TO_BERRY(ITEM_PERSIM_BERRY)] = {TYPE_GROUND, 80},
    [ITEM_TO_BERRY(ITEM_LUM_BERRY)] = {TYPE_FLYING, 80},
    [ITEM_TO_BERRY(ITEM_SITRUS_BERRY)] = {TYPE_PSYCHIC, 80},
    [ITEM_TO_BERRY(ITEM_FIGY_BERRY)] = {TYPE_BUG, 80},
    [ITEM_TO_BERRY(ITEM_WIKI_BERRY)] = {TYPE_ROCK, 80},
    [ITEM_TO_BERRY(ITEM_MAGO_BERRY)] = {TYPE_GHOST, 80},
    [ITEM_TO_BERRY(ITEM_AGUAV_BERRY)] = {TYPE_DRAGON, 80},
    [ITEM_TO_BERRY(ITEM_IAPAPA_BERRY)] = {TYPE_DARK, 80},
    [ITEM_TO_BERRY(ITEM_RAZZ_BERRY)] = {TYPE_STEEL, 80},
    [ITEM_TO_BERRY(ITEM_OCCA_BERRY)] = {TYPE_FIRE, 80},
    [ITEM_TO_BERRY(ITEM_PASSHO_BERRY)] = {TYPE_WATER, 80},
    [ITEM_TO_BERRY(ITEM_WACAN_BERRY)] = {TYPE_ELECTRIC, 80},
    [ITEM_TO_BERRY(ITEM_RINDO_BERRY)] = {TYPE_GRASS, 80},
    [ITEM_TO_BERRY(ITEM_YACHE_BERRY)] = {TYPE_ICE, 80},
    [ITEM_TO_BERRY(ITEM_CHOPLE_BERRY)] = {TYPE_FIGHTING, 80},
    [ITEM_TO_BERRY(ITEM_KEBIA_BERRY)] = {TYPE_POISON, 80},
    [ITEM_TO_BERRY(ITEM_SHUCA_BERRY)] = {TYPE_GROUND, 80},
    [ITEM_TO_BERRY(ITEM_COBA_BERRY)] = {TYPE_FLYING, 80},
    [ITEM_TO_BERRY(ITEM_PAYAPA_BERRY)] = {TYPE_PSYCHIC, 80},
    [ITEM_TO_BERRY(ITEM_TANGA_BERRY)] = {TYPE_BUG, 80},
    [ITEM_TO_BERRY(ITEM_CHARTI_BERRY)] = {TYPE_ROCK, 80},
    [ITEM_TO_BERRY(ITEM_KASIB_BERRY)] = {TYPE_GHOST, 80},
    [ITEM_TO_BERRY(ITEM_HABAN_BERRY)] = {TYPE_DRAGON, 80},
    [ITEM_TO_BERRY(ITEM_COLBUR_BERRY)] = {TYPE_DARK, 80},
    [ITEM_TO_BERRY(ITEM_BABIRI_BERRY)] = {TYPE_STEEL, 80},
    [ITEM_TO_BERRY(ITEM_CHILAN_BERRY)] = {TYPE_NORMAL, 80},
    [ITEM_TO_BERRY(ITEM_ROSELI_BERRY)] = {TYPE_FAIRY, 80},
    [ITEM_TO_BERRY(ITEM_BLUK_BERRY)] = {TYPE_FIRE, 90},
    [ITEM_TO_BERRY(ITEM_NANAB_BERRY)] = {TYPE_WATER, 90},
    [ITEM_TO_BERRY(ITEM_WEPEAR_BERRY)] = {TYPE_ELECTRIC, 90},
    [ITEM_TO_BERRY(ITEM_PINAP_BERRY)] = {TYPE_GRASS, 90},
    [ITEM_TO_BERRY(ITEM_POMEG_BERRY)] = {TYPE_ICE, 90},
    [ITEM_TO_BERRY(ITEM_KELPSY_BERRY)] = {TYPE_FIGHTING, 90},
    [ITEM_TO_BERRY(ITEM_QUALOT_BERRY)] = {TYPE_POISON, 90},
    [ITEM_TO_BERRY(ITEM_HONDEW_BERRY)] = {TYPE_GROUND, 90},
    [ITEM_TO_BERRY(ITEM_GREPA_BERRY)] = {TYPE_FLYING, 90},
    [ITEM_TO_BERRY(ITEM_TAMATO_BERRY)] = {TYPE_PSYCHIC, 90},
    [ITEM_TO_BERRY(ITEM_CORNN_BERRY)] = {TYPE_BUG, 90},
    [ITEM_TO_BERRY(ITEM_MAGOST_BERRY)] = {TYPE_ROCK, 90},
    [ITEM_TO_BERRY(ITEM_RABUTA_BERRY)] = {TYPE_GHOST, 90},
    [ITEM_TO_BERRY(ITEM_NOMEL_BERRY)] = {TYPE_DRAGON, 90},
    [ITEM_TO_BERRY(ITEM_SPELON_BERRY)] = {TYPE_DARK, 90},
    [ITEM_TO_BERRY(ITEM_PAMTRE_BERRY)] = {TYPE_STEEL, 90},
    [ITEM_TO_BERRY(ITEM_WATMEL_BERRY)] = {TYPE_FIRE, 100},
    [ITEM_TO_BERRY(ITEM_DURIN_BERRY)] = {TYPE_WATER, 100},
    [ITEM_TO_BERRY(ITEM_BELUE_BERRY)] = {TYPE_ELECTRIC, 100},
    [ITEM_TO_BERRY(ITEM_LIECHI_BERRY)] = {TYPE_GRASS, 100},
    [ITEM_TO_BERRY(ITEM_GANLON_BERRY)] = {TYPE_ICE, 100},
    [ITEM_TO_BERRY(ITEM_SALAC_BERRY)] = {TYPE_FIGHTING, 100},
    [ITEM_TO_BERRY(ITEM_PETAYA_BERRY)] = {TYPE_POISON, 100},
    [ITEM_TO_BERRY(ITEM_APICOT_BERRY)] = {TYPE_GROUND, 100},
    [ITEM_TO_BERRY(ITEM_LANSAT_BERRY)] = {TYPE_FLYING, 100},
    [ITEM_TO_BERRY(ITEM_STARF_BERRY)] = {TYPE_PSYCHIC, 100},
    [ITEM_TO_BERRY(ITEM_ENIGMA_BERRY)] = {TYPE_BUG, 100},
    [ITEM_TO_BERRY(ITEM_MICLE_BERRY)] = {TYPE_ROCK, 100},
    [ITEM_TO_BERRY(ITEM_CUSTAP_BERRY)] = {TYPE_GHOST, 100},
    [ITEM_TO_BERRY(ITEM_JABOCA_BERRY)] = {TYPE_DRAGON, 100},
    [ITEM_TO_BERRY(ITEM_ROWAP_BERRY)] = {TYPE_DARK, 100},
    [ITEM_TO_BERRY(ITEM_KEE_BERRY)] = {TYPE_FAIRY, 100},
    [ITEM_TO_BERRY(ITEM_MARANGA_BERRY)] = {TYPE_DARK, 100},
};

u32 CalcRolloutBasePower(u32 battlerAtk, u32 basePower, u32 rolloutTimer)
{
    u32 i;
    for (i = 1; i < (5 - rolloutTimer); i++)
        basePower *= 2;
    if (gBattleMons[battlerAtk].volatiles.defenseCurl)
        basePower *= 2;
    return basePower;
}

u32 CalcFuryCutterBasePower(u32 basePower, u32 furyCutterCounter)
{
    u32 i;
    for (i = 1; i < furyCutterCounter; i++)
        basePower *= 2;
    return basePower;
}

static inline u32 IsFieldMudSportAffected(enum Type moveType)
{
    if (moveType == TYPE_ELECTRIC && (gFieldStatuses & STATUS_FIELD_MUDSPORT))
        return TRUE;

    if (B_SPORT_TURNS < GEN_6)
    {
        for (u32 battler = 0; battler < gBattlersCount; battler++)
        {
            if (gBattleMons[battler].volatiles.mudSport)
                return TRUE;
        }
    }

    return FALSE;
}

static inline u32 IsFieldWaterSportAffected(enum Type moveType)
{
    if (moveType == TYPE_FIRE && (gFieldStatuses & STATUS_FIELD_WATERSPORT))
        return TRUE;

    if (B_SPORT_TURNS < GEN_6)
    {
        for (u32 battler = 0; battler < gBattlersCount; battler++)
        {
            if (gBattleMons[battler].volatiles.waterSport)
                return TRUE;
        }
    }

    return FALSE;
}

static inline u32 CalcMoveBasePower(struct DamageContext *ctx)
{
    u32 battlerAtk = ctx->battlerAtk;
    u32 battlerDef = ctx->battlerDef;
    u32 move = ctx->move;

    u32 i;
    u32 basePower = GetMovePower(move);
    u32 moveEffect = GetMoveEffect(move);
    u32 weight, hpFraction, speed;

    if (GetActiveGimmick(battlerAtk) == GIMMICK_Z_MOVE)
        return GetZMovePower(gCurrentMove);

    if (GetActiveGimmick(battlerAtk) == GIMMICK_DYNAMAX)
        return GetMaxMovePower(move);

    switch (moveEffect)
    {
    case EFFECT_PLEDGE:
        if (gBattleStruct->pledgeMove)
            basePower = 150;
        break;
    case EFFECT_FLING:
        basePower = GetFlingPowerFromItemId(gBattleMons[battlerAtk].item);
        break;
    case EFFECT_POWER_BASED_ON_USER_HP:
        basePower = gBattleMons[battlerAtk].hp * basePower / gBattleMons[battlerAtk].maxHP;
        break;
    case EFFECT_FLAIL:
        hpFraction = GetScaledHPFraction(gBattleMons[battlerAtk].hp, gBattleMons[battlerAtk].maxHP, 48);
        for (i = 0; i < sizeof(sFlailHpScaleToPowerTable); i += 2)
        {
            if (hpFraction <= sFlailHpScaleToPowerTable[i])
                break;
        }
        basePower = sFlailHpScaleToPowerTable[i + 1];
        break;
    case EFFECT_RETURN:
        basePower = 10 * (gBattleMons[battlerAtk].friendship) / 25;
        break;
    case EFFECT_FRUSTRATION:
        basePower = 10 * (MAX_FRIENDSHIP - gBattleMons[battlerAtk].friendship) / 25;
        break;
    case EFFECT_FURY_CUTTER:
        basePower = CalcFuryCutterBasePower(basePower, gDisableStructs[battlerAtk].furyCutterCounter);
        break;
    case EFFECT_ROLLOUT:
        basePower = CalcRolloutBasePower(battlerAtk, basePower, gDisableStructs[battlerAtk].rolloutTimer);
        break;
    case EFFECT_MAGNITUDE:
        basePower = gBattleStruct->magnitudeBasePower;
        break;
    case EFFECT_PRESENT:
        basePower = gBattleStruct->presentBasePower;
        break;
    case EFFECT_TRIPLE_KICK:
        basePower *= 1 + GetMoveStrikeCount(move) - gMultiHitCounter;
        break;
    case EFFECT_SPIT_UP:
        basePower = 100 * gDisableStructs[battlerAtk].stockpileCounter;
        break;
    case EFFECT_REVENGE:
        if ((gProtectStructs[battlerAtk].physicalDmg
                && gProtectStructs[battlerAtk].physicalBattlerId == battlerDef)
            || (gProtectStructs[battlerAtk].specialDmg
                && gProtectStructs[battlerAtk].specialBattlerId == battlerDef))
            basePower *= 2;
        break;
    case EFFECT_WEATHER_BALL:
        if (ctx->weather & B_WEATHER_ANY)
            basePower *= 2;
        break;
    case EFFECT_PURSUIT:
        if (gBattleStruct->battlerState[battlerDef].pursuitTarget)
            basePower *= 2;
        break;
    case EFFECT_NATURAL_GIFT:
        basePower = gNaturalGiftTable[ITEM_TO_BERRY(gBattleMons[battlerAtk].item)].power;
        break;
    case EFFECT_DOUBLE_POWER_ON_ARG_STATUS:
        // Comatose targets treated as if asleep
        if ((gBattleMons[battlerDef].status1 | (STATUS1_SLEEP * (ctx->abilityDef == ABILITY_COMATOSE))) & GetMoveEffectArg_Status(move)
         && !((GetMoveAdditionalEffectById(move, 0)->moveEffect == MOVE_EFFECT_REMOVE_STATUS) && DoesSubstituteBlockMove(battlerAtk, battlerDef, move)))
            basePower *= 2;
        break;
    case EFFECT_POWER_BASED_ON_TARGET_HP:
        basePower = gBattleMons[battlerDef].hp * basePower / gBattleMons[battlerDef].maxHP;
        break;
    case EFFECT_ASSURANCE:
        if (gProtectStructs[battlerDef].assuranceDoubled)
            basePower *= 2;
        break;
    case EFFECT_TRUMP_CARD:
        i = GetMoveSlot(gBattleMons[battlerAtk].moves, move);
        if (i != MAX_MON_MOVES)
        {
            if (gBattleMons[battlerAtk].pp[i] >= ARRAY_COUNT(sTrumpCardPowerTable))
                basePower = sTrumpCardPowerTable[ARRAY_COUNT(sTrumpCardPowerTable) - 1];
            else
                basePower = sTrumpCardPowerTable[gBattleMons[battlerAtk].pp[i]];
        }
        break;
    case EFFECT_ACROBATICS:
        if (gBattleMons[battlerAtk].item == ITEM_NONE
            // Edge case, because removal of items happens after damage calculation.
            || (gSpecialStatuses[battlerAtk].gemBoost && GetBattlerHoldEffect(battlerAtk) == HOLD_EFFECT_GEMS))
            basePower *= 2;
        break;
    case EFFECT_LOW_KICK:
        weight = GetBattlerWeight(battlerDef);
        for (i = 0; sWeightToDamageTable[i] != 0xFFFF; i += 2)
        {
            if (sWeightToDamageTable[i] > weight)
                break;
        }
        if (sWeightToDamageTable[i] != 0xFFFF)
            basePower = sWeightToDamageTable[i + 1];
        else
            basePower = 120;
        break;
    case EFFECT_HEAT_CRASH:
        weight = GetBattlerWeight(battlerAtk) / GetBattlerWeight(battlerDef);
        if (weight >= ARRAY_COUNT(sHeatCrashPowerTable))
            basePower = sHeatCrashPowerTable[ARRAY_COUNT(sHeatCrashPowerTable) - 1];
        else
            basePower = sHeatCrashPowerTable[weight];
        break;
    case EFFECT_PUNISHMENT:
        basePower = 60 + (CountBattlerStatIncreases(battlerDef, FALSE) * 20);
        if (basePower > 200)
            basePower = 200;
        break;
    case EFFECT_STORED_POWER:
        basePower += (CountBattlerStatIncreases(battlerAtk, TRUE) * 20);
        break;
    case EFFECT_ELECTRO_BALL:
        speed = GetBattlerTotalSpeedStat(battlerAtk, ctx->abilityAtk, ctx->holdEffectAtk) / GetBattlerTotalSpeedStat(battlerDef, ctx->abilityDef, ctx->holdEffectDef);
        if (speed >= ARRAY_COUNT(sSpeedDiffPowerTable))
            speed = ARRAY_COUNT(sSpeedDiffPowerTable) - 1;
        basePower = sSpeedDiffPowerTable[speed];
        break;
    case EFFECT_GYRO_BALL:
        {
            u32 attackerSpeed = GetBattlerTotalSpeedStat(battlerAtk, ctx->abilityAtk, ctx->holdEffectAtk);
            if (attackerSpeed == 0)
            {
                basePower = 1;
            }
            else
            {
                basePower = ((25 * GetBattlerTotalSpeedStat(battlerDef, ctx->abilityDef, ctx->holdEffectDef)) / attackerSpeed) + 1;
                if (basePower > 150)
                    basePower = 150;
            }
            break;
        }
    case EFFECT_ECHOED_VOICE:
        // gBattleStruct->echoedVoiceCounter incremented in EndTurnVarious called by DoEndTurnEffects
        if (gBattleStruct->echoedVoiceCounter != 0)
        {
            basePower += (basePower * gBattleStruct->echoedVoiceCounter);
            if (basePower > 200)
                basePower = 200;
        }
        break;
    case EFFECT_PAYBACK:
        if (HasBattlerActedThisTurn(battlerDef)
            && (B_PAYBACK_SWITCH_BOOST < GEN_5 || gDisableStructs[battlerDef].isFirstTurn != 2))
            basePower *= 2;
        break;
    case EFFECT_BOLT_BEAK:
        if (!HasBattlerActedThisTurn(battlerDef)
            || gDisableStructs[battlerDef].isFirstTurn == 2)
            basePower *= 2;
        break;
    case EFFECT_FUSION_COMBO:
        if (move == gLastUsedMove)
            break;
        // fallthrough
    case EFFECT_ROUND:
        // don't double power due to previous turn's Round/Fusion move
        if (gCurrentTurnActionNumber != 0
         && gActionsByTurnOrder[gCurrentTurnActionNumber - 1] == B_ACTION_USE_MOVE
         && GetMoveEffect(gLastUsedMove) == moveEffect)
            basePower *= 2;
        break;
    case EFFECT_LASH_OUT:
        if (gProtectStructs[battlerAtk].lashOutAffected)
            basePower *= 2;
        break;
    case EFFECT_MISTY_EXPLOSION:
        if (IsBattlerTerrainAffected(battlerAtk, ctx->abilityAtk, ctx->holdEffectAtk, STATUS_FIELD_MISTY_TERRAIN))
            basePower = uq4_12_multiply(basePower, UQ_4_12(1.5));
        break;
    case EFFECT_DYNAMAX_DOUBLE_DMG:
        if (GetActiveGimmick(battlerDef) == GIMMICK_DYNAMAX)
            basePower *= 2;
        break;
    case EFFECT_HIDDEN_POWER:
    {
        if (B_HIDDEN_POWER_DMG < GEN_6)
        {
            u8 powerBits = ((gBattleMons[battlerAtk].hpIV & 2) >> 1)
                         | ((gBattleMons[battlerAtk].attackIV & 2) << 0)
                         | ((gBattleMons[battlerAtk].defenseIV & 2) << 1)
                         | ((gBattleMons[battlerAtk].speedIV & 2) << 2)
                         | ((gBattleMons[battlerAtk].spAttackIV & 2) << 3)
                         | ((gBattleMons[battlerAtk].spDefenseIV & 2) << 4);

            basePower = (40 * powerBits) / 63 + 30;
        }
        break;
    }
    case EFFECT_GRAV_APPLE:
        if (gFieldStatuses & STATUS_FIELD_GRAVITY)
            basePower = uq4_12_multiply(basePower, UQ_4_12(1.5));
        break;
    case EFFECT_TERRAIN_PULSE:
        if (IsBattlerTerrainAffected(battlerAtk, ctx->abilityAtk, ctx->holdEffectAtk, STATUS_FIELD_TERRAIN_ANY))
            basePower *= 2;
        break;
    case EFFECT_EXPANDING_FORCE:
        if (IsBattlerTerrainAffected(battlerAtk, ctx->abilityAtk, ctx->holdEffectAtk, STATUS_FIELD_PSYCHIC_TERRAIN))
            basePower = uq4_12_multiply(basePower, UQ_4_12(1.5));
        break;
    case EFFECT_RISING_VOLTAGE:
        if (IsBattlerTerrainAffected(battlerDef, ctx->abilityDef, ctx->holdEffectDef, STATUS_FIELD_ELECTRIC_TERRAIN))
            basePower *= 2;
        break;
    case EFFECT_BEAT_UP:
        if (B_BEAT_UP >= GEN_5)
            basePower = CalcBeatUpPower();
        break;
    case EFFECT_PSYBLADE:
        if (gFieldStatuses & STATUS_FIELD_ELECTRIC_TERRAIN)
            basePower = uq4_12_multiply(basePower, UQ_4_12(1.5));
        break;
    case EFFECT_MAX_MOVE:
        basePower = GetMaxMovePower(GetChosenMoveFromPosition(battlerAtk));
        break;
    case EFFECT_RAGE_FIST:
        basePower += 50 * GetBattlerPartyState(battlerAtk)->timesGotHit;
        basePower = (basePower > 350) ? 350 : basePower;
        break;
    case EFFECT_FICKLE_BEAM:
        if (gBattleStruct->fickleBeamBoosted)
            basePower *= 2;
        break;
    case EFFECT_TERA_BLAST:
        if (GetActiveGimmick(battlerAtk) == GIMMICK_TERA && GetBattlerTeraType(battlerAtk) == TYPE_STELLAR)
            basePower = 100;
        break;
    case EFFECT_LAST_RESPECTS:
        basePower += (basePower * min(100, GetBattlerSideFaintCounter(battlerAtk)));
        break;
    default:
        break;
    }

    // Move-specific base power changes
    switch (move)
    {
    case MOVE_WATER_SHURIKEN:
        if (gBattleMons[battlerAtk].species == SPECIES_GRENINJA_ASH)
            basePower = 20;
        break;
    }

    if (basePower == 0)
        basePower = 1;
    return basePower;
}

static inline u32 CalcMoveBasePowerAfterModifiers(struct DamageContext *ctx)
{
    u32 holdEffectParamAtk;
    u32 basePower = CalcMoveBasePower(ctx);
    u32 battlerAtk = ctx->battlerAtk;
    u32 battlerDef = ctx->battlerDef;
    u32 move = ctx->move;
    enum Type moveType = ctx->moveType;
    enum BattleMoveEffects moveEffect = GetMoveEffect(move);

    uq4_12_t holdEffectModifier;
    uq4_12_t modifier = UQ_4_12(1.0);
    u32 atkSide = GetBattlerSide(battlerAtk);

    // move effect
    switch (moveEffect)
    {
    case EFFECT_FACADE:
        if (gBattleMons[battlerAtk].status1 & (STATUS1_BURN | STATUS1_PSN_ANY | STATUS1_PARALYSIS | STATUS1_FROSTBITE))
            modifier = uq4_12_multiply(modifier, UQ_4_12(2.0));
        break;
    case EFFECT_BRINE:
        if (gBattleMons[battlerDef].hp <= (gBattleMons[battlerDef].maxHP / 2))
            modifier = uq4_12_multiply(modifier, UQ_4_12(2.0));
        break;
    case EFFECT_RETALIATE:
        if (gSideTimers[atkSide].retaliateTimer == 1)
            modifier = uq4_12_multiply(modifier, UQ_4_12(2.0));
        break;
    case EFFECT_SOLAR_BEAM:
        if (IsBattlerWeatherAffected(battlerAtk, (B_WEATHER_HAIL | B_WEATHER_SANDSTORM | B_WEATHER_RAIN | B_WEATHER_SNOW | B_WEATHER_FOG)))
            modifier = uq4_12_multiply(modifier, UQ_4_12(0.5));
        break;
    case EFFECT_STOMPING_TANTRUM:
        if (gBattleStruct->battlerState[battlerAtk].stompingTantrumTimer == 1)
            modifier = uq4_12_multiply(modifier, UQ_4_12(2.0));
        break;
    case EFFECT_MAGNITUDE:
    case EFFECT_EARTHQUAKE:
        if (gFieldStatuses & STATUS_FIELD_GRASSY_TERRAIN && !IsSemiInvulnerable(battlerDef, CHECK_ALL))
            modifier = uq4_12_multiply(modifier, UQ_4_12(0.5));
        break;
    case EFFECT_KNOCK_OFF:
        if (B_KNOCK_OFF_DMG >= GEN_6
            && gBattleMons[battlerDef].item != ITEM_NONE
            && CanBattlerGetOrLoseItem(battlerDef, gBattleMons[battlerDef].item))
            modifier = uq4_12_multiply(modifier, UQ_4_12(1.5));
        break;
    default:
        break;
    }

    // various effects
    for (u32 i = 0; i < gProtectStructs[battlerAtk].helpingHand; i++)
        modifier = uq4_12_multiply(modifier, UQ_4_12(1.5));

    if (gSpecialStatuses[battlerAtk].gemBoost)
        modifier = uq4_12_multiply(modifier, uq4_12_add(UQ_4_12(1.0), PercentToUQ4_12(gSpecialStatuses[battlerAtk].gemParam)));
    if (gBattleMons[battlerAtk].volatiles.charge && moveType == TYPE_ELECTRIC)
        modifier = uq4_12_multiply(modifier, UQ_4_12(2.0));
    if (GetMoveEffect(ctx->chosenMove) == EFFECT_ME_FIRST)
        modifier = uq4_12_multiply(modifier, UQ_4_12(1.5));
    if (IsBattlerTerrainAffected(battlerAtk, ctx->abilityAtk, ctx->holdEffectAtk, STATUS_FIELD_GRASSY_TERRAIN) && moveType == TYPE_GRASS)
        modifier = uq4_12_multiply(modifier, (B_TERRAIN_TYPE_BOOST >= GEN_8 ? UQ_4_12(1.3) : UQ_4_12(1.5)));
    if (IsBattlerTerrainAffected(battlerDef, ctx->abilityDef, ctx->holdEffectDef, STATUS_FIELD_MISTY_TERRAIN) && moveType == TYPE_DRAGON)
        modifier = uq4_12_multiply(modifier, UQ_4_12(0.5));
    if (IsBattlerTerrainAffected(battlerAtk, ctx->abilityAtk, ctx->holdEffectAtk, STATUS_FIELD_ELECTRIC_TERRAIN) && moveType == TYPE_ELECTRIC)
        modifier = uq4_12_multiply(modifier, (B_TERRAIN_TYPE_BOOST >= GEN_8 ? UQ_4_12(1.3) : UQ_4_12(1.5)));
    if (IsBattlerTerrainAffected(battlerAtk, ctx->abilityAtk, ctx->holdEffectAtk, STATUS_FIELD_PSYCHIC_TERRAIN) && moveType == TYPE_PSYCHIC)
        modifier = uq4_12_multiply(modifier, (B_TERRAIN_TYPE_BOOST >= GEN_8 ? UQ_4_12(1.3) : UQ_4_12(1.5)));
    if (IsFieldMudSportAffected(ctx->moveType))
        modifier = uq4_12_multiply(modifier, UQ_4_12(B_SPORT_DMG_REDUCTION >= GEN_5 ? 0.33 : 0.5));
    if (IsFieldWaterSportAffected(ctx->moveType))
        modifier = uq4_12_multiply(modifier, UQ_4_12(B_SPORT_DMG_REDUCTION >= GEN_5 ? 0.33 : 0.5));

    // attacker's abilities
    switch (ctx->abilityAtk)
    {
    case ABILITY_TECHNICIAN:
        if (basePower <= 60)
           modifier = uq4_12_multiply(modifier, UQ_4_12(1.5));
        break;
    case ABILITY_FLARE_BOOST:
        if (gBattleMons[battlerAtk].status1 & STATUS1_BURN && IsBattleMoveSpecial(move))
           modifier = uq4_12_multiply(modifier, UQ_4_12(1.5));
        break;
    case ABILITY_TOXIC_BOOST:
        if (gBattleMons[battlerAtk].status1 & STATUS1_PSN_ANY && IsBattleMovePhysical(move))
           modifier = uq4_12_multiply(modifier, UQ_4_12(1.5));
        break;
    case ABILITY_RECKLESS:
        if (moveEffect == EFFECT_RECOIL || moveEffect == EFFECT_RECOIL_IF_MISS)
           modifier = uq4_12_multiply(modifier, UQ_4_12(1.2));
        break;
    case ABILITY_IRON_FIST:
        if (IsPunchingMove(move))
           modifier = uq4_12_multiply(modifier, UQ_4_12(1.2));
        break;
    case ABILITY_SHEER_FORCE:
        if (MoveIsAffectedBySheerForce(move))
           modifier = uq4_12_multiply(modifier, UQ_4_12(1.3));
        break;
    case ABILITY_SAND_FORCE:
        if ((moveType == TYPE_STEEL || moveType == TYPE_ROCK || moveType == TYPE_GROUND)
            && ctx->weather & B_WEATHER_SANDSTORM)
           modifier = uq4_12_multiply(modifier, UQ_4_12(1.3));
        break;
    case ABILITY_RIVALRY:
        if (AreBattlersOfSameGender(battlerAtk, battlerDef))
            modifier = uq4_12_multiply(modifier, UQ_4_12(1.25));
        else if (AreBattlersOfOppositeGender(battlerAtk, battlerDef))
            modifier = uq4_12_multiply(modifier, UQ_4_12(0.75));
        break;
    case ABILITY_ANALYTIC:
        if (GetBattlerTurnOrderNum(battlerAtk) == gBattlersCount - 1 && move != MOVE_FUTURE_SIGHT && move != MOVE_DOOM_DESIRE)
           modifier = uq4_12_multiply(modifier, UQ_4_12(1.3));
        break;
    case ABILITY_TOUGH_CLAWS:
        if (IsMoveMakingContact(battlerAtk, battlerDef, ctx->abilityAtk, ctx->holdEffectAtk, ctx->move))
           modifier = uq4_12_multiply(modifier, UQ_4_12(1.3));
        break;
    case ABILITY_STRONG_JAW:
        if (IsBitingMove(move))
           modifier = uq4_12_multiply(modifier, UQ_4_12(1.5));
        break;
    case ABILITY_MEGA_LAUNCHER:
        if (IsPulseMove(move))
           modifier = uq4_12_multiply(modifier, UQ_4_12(1.5));
        break;
    case ABILITY_WATER_BUBBLE:
        if (moveType == TYPE_WATER)
           modifier = uq4_12_multiply(modifier, UQ_4_12(2.0));
        break;
    case ABILITY_STEELWORKER:
        if (moveType == TYPE_STEEL)
           modifier = uq4_12_multiply(modifier, UQ_4_12(1.5));
        break;
    case ABILITY_PIXILATE:
        if (moveType == TYPE_FAIRY && gBattleStruct->battlerState[battlerAtk].ateBoost)
            modifier = uq4_12_multiply(modifier, UQ_4_12(GetGenConfig(GEN_CONFIG_ATE_MULTIPLIER) >= GEN_7 ? 1.2 : 1.3));
        break;
    case ABILITY_GALVANIZE:
        if (moveType == TYPE_ELECTRIC && gBattleStruct->battlerState[battlerAtk].ateBoost)
            modifier = uq4_12_multiply(modifier, UQ_4_12(GetGenConfig(GEN_CONFIG_ATE_MULTIPLIER) >= GEN_7 ? 1.2 : 1.3));
        break;
    case ABILITY_REFRIGERATE:
        if (moveType == TYPE_ICE && gBattleStruct->battlerState[battlerAtk].ateBoost)
            modifier = uq4_12_multiply(modifier, UQ_4_12(GetGenConfig(GEN_CONFIG_ATE_MULTIPLIER) >= GEN_7 ? 1.2 : 1.3));
        break;
    case ABILITY_AERILATE:
        if (moveType == TYPE_FLYING && gBattleStruct->battlerState[battlerAtk].ateBoost)
            modifier = uq4_12_multiply(modifier, UQ_4_12(GetGenConfig(GEN_CONFIG_ATE_MULTIPLIER) >= GEN_7 ? 1.2 : 1.3));
        break;
    case ABILITY_NORMALIZE:
        if (moveType == TYPE_NORMAL && gBattleStruct->battlerState[battlerAtk].ateBoost && GetGenConfig(GEN_CONFIG_ATE_MULTIPLIER) >= GEN_7)
            modifier = uq4_12_multiply(modifier, UQ_4_12(1.2));
        break;
    case ABILITY_PUNK_ROCK:
        if (IsSoundMove(move))
            modifier = uq4_12_multiply(modifier, UQ_4_12(1.3));
        break;
    case ABILITY_STEELY_SPIRIT:
        if (moveType == TYPE_STEEL)
            modifier = uq4_12_multiply(modifier, UQ_4_12(1.5));
        break;
    case ABILITY_SHARPNESS:
        if (IsSlicingMove(move))
           modifier = uq4_12_multiply(modifier, UQ_4_12(1.5));
        break;
    case ABILITY_SUPREME_OVERLORD:
        modifier = uq4_12_multiply(modifier, GetSupremeOverlordModifier(battlerAtk));
        break;
    default:
        break;
    }

    // field abilities
    if ((IsAbilityOnField(ABILITY_DARK_AURA) && moveType == TYPE_DARK)
     || (IsAbilityOnField(ABILITY_FAIRY_AURA) && moveType == TYPE_FAIRY))
    {
        if (IsAbilityOnField(ABILITY_AURA_BREAK))
            modifier = uq4_12_multiply(modifier, UQ_4_12(0.75));
        else
            modifier = uq4_12_multiply(modifier, UQ_4_12(1.33));
    }

    // attacker partner's abilities
    if (IsBattlerAlive(BATTLE_PARTNER(battlerAtk)))
    {
        switch (GetBattlerAbility(BATTLE_PARTNER(battlerAtk)))
        {
        case ABILITY_BATTERY:
            if (IsBattleMoveSpecial(move))
                modifier = uq4_12_multiply(modifier, UQ_4_12(1.3));
            break;
        case ABILITY_POWER_SPOT:
            modifier = uq4_12_multiply(modifier, UQ_4_12(1.3));
            break;
        case ABILITY_STEELY_SPIRIT:
            if (moveType == TYPE_STEEL)
                modifier = uq4_12_multiply(modifier, UQ_4_12(1.5));
            break;
        default:
            break;
        }
    }

    // target's abilities
    switch (ctx->abilityDef)
    {
    case ABILITY_HEATPROOF:
    case ABILITY_WATER_BUBBLE:
        if (moveType == TYPE_FIRE)
        {
            modifier = uq4_12_multiply(modifier, UQ_4_12(0.5));
            if (ctx->updateFlags)
                RecordAbilityBattle(battlerDef, ctx->abilityDef);
        }
        break;
    case ABILITY_DRY_SKIN:
        if (moveType == TYPE_FIRE)
            modifier = uq4_12_multiply(modifier, UQ_4_12(1.25));
        break;
    case ABILITY_PROTOSYNTHESIS:
        {
            enum Stat defHighestStat = GetHighestStatId(battlerDef);
            if (((ctx->weather & B_WEATHER_SUN && HasWeatherEffect()) || gDisableStructs[battlerDef].boosterEnergyActivated)
             && ((IsBattleMovePhysical(move) && defHighestStat == STAT_DEF) || (IsBattleMoveSpecial(move) && defHighestStat == STAT_SPDEF))
             && !(gBattleMons[battlerDef].volatiles.transformed))
                modifier = uq4_12_multiply(modifier, UQ_4_12(0.7));
        }
        break;
    case ABILITY_QUARK_DRIVE:
        {
            u8 defHighestStat = GetHighestStatId(battlerDef);
            if ((gFieldStatuses & STATUS_FIELD_ELECTRIC_TERRAIN || gDisableStructs[battlerDef].boosterEnergyActivated)
             && ((IsBattleMovePhysical(move) && defHighestStat == STAT_DEF) || (IsBattleMoveSpecial(move) && defHighestStat == STAT_SPDEF))
             && !(gBattleMons[battlerDef].volatiles.transformed))
                modifier = uq4_12_multiply(modifier, UQ_4_12(0.7));
        }
        break;
    default:
        break;
    }

    holdEffectParamAtk = GetBattlerHoldEffectParam(battlerAtk);
    if (holdEffectParamAtk > 100)
        holdEffectParamAtk = 100;

    holdEffectModifier = uq4_12_add(UQ_4_12(1.0), PercentToUQ4_12(holdEffectParamAtk));

    // attacker's hold effect
    switch (ctx->holdEffectAtk)
    {
    case HOLD_EFFECT_MUSCLE_BAND:
        if (IsBattleMovePhysical(move))
            modifier = uq4_12_multiply(modifier, uq4_12_add(UQ_4_12(1.0), PercentToUQ4_12_Floored(holdEffectParamAtk)));
        break;
    case HOLD_EFFECT_WISE_GLASSES:
        if (IsBattleMoveSpecial(move))
            modifier = uq4_12_multiply(modifier, uq4_12_add(UQ_4_12(1.0), PercentToUQ4_12_Floored(holdEffectParamAtk)));
        break;
    case HOLD_EFFECT_LUSTROUS_ORB:
        if (GET_BASE_SPECIES_ID(gBattleMons[battlerAtk].species) == SPECIES_PALKIA && (moveType == TYPE_WATER || moveType == TYPE_DRAGON))
            modifier = uq4_12_multiply(modifier, holdEffectModifier);
        break;
    case HOLD_EFFECT_ADAMANT_ORB:
        if (GET_BASE_SPECIES_ID(gBattleMons[battlerAtk].species) == SPECIES_DIALGA && (moveType == TYPE_STEEL || moveType == TYPE_DRAGON))
            modifier = uq4_12_multiply(modifier, holdEffectModifier);
        break;
    case HOLD_EFFECT_GRISEOUS_ORB:
        if (GET_BASE_SPECIES_ID(gBattleMons[battlerAtk].species) == SPECIES_GIRATINA && (moveType == TYPE_GHOST || moveType == TYPE_DRAGON))
            modifier = uq4_12_multiply(modifier, holdEffectModifier);
        break;
    case HOLD_EFFECT_SOUL_DEW:
        if ((gBattleMons[battlerAtk].species == SPECIES_LATIAS || gBattleMons[battlerAtk].species == SPECIES_LATIOS)
            && ((B_SOUL_DEW_BOOST >= GEN_7 && (moveType == TYPE_PSYCHIC || moveType == TYPE_DRAGON))
             || (B_SOUL_DEW_BOOST < GEN_7 && !(gBattleTypeFlags & BATTLE_TYPE_FRONTIER) && IsBattleMoveSpecial(move))))
            modifier = uq4_12_multiply(modifier, holdEffectModifier);
        break;
    case HOLD_EFFECT_TYPE_POWER:
    case HOLD_EFFECT_PLATE:
        if (moveType == GetItemSecondaryId(gBattleMons[battlerAtk].item))
            modifier = uq4_12_multiply(modifier, holdEffectModifier);
        break;
    case HOLD_EFFECT_PUNCHING_GLOVE:
        if (IsPunchingMove(move))
           modifier = uq4_12_multiply(modifier, UQ_4_12(1.1));
        break;
    case HOLD_EFFECT_OGERPON_MASK:
        if (GET_BASE_SPECIES_ID(gBattleMons[battlerAtk].species) == SPECIES_OGERPON)
           modifier = uq4_12_multiply(modifier, UQ_4_12(1.2));
        break;
    default:
        break;
    }

    // Terastallization boosts weak, non-priority, non-multi hit moves after modifiers to 60 BP.
    if (GetActiveGimmick(battlerAtk) == GIMMICK_TERA
        && (moveType == GetBattlerTeraType(battlerAtk)
        || (GetBattlerTeraType(battlerAtk) == TYPE_STELLAR && IsTypeStellarBoosted(battlerAtk, moveType)))
        && uq4_12_multiply_by_int_half_down(modifier, basePower) < 60
        && GetMovePower(move) > 1
        && GetMoveStrikeCount(move) < 2
        && moveEffect != EFFECT_POWER_BASED_ON_USER_HP
        && moveEffect != EFFECT_POWER_BASED_ON_TARGET_HP
        && moveEffect != EFFECT_MULTI_HIT
        && GetMovePriority(move) == 0)
    {
        return 60;
    }

    return uq4_12_multiply_by_int_half_down(modifier, basePower);
}

static bool32 IsRuinStatusActive(u32 fieldEffect)
{
    bool32 isNeutralizingGasOnField = IsNeutralizingGasOnField();
    for (u32 battler = 0; battler < gBattlersCount; battler++)
    {
        // Mold Breaker doesn't ignore Ruin field status but Gastro Acid and Neutralizing Gas do
        if (gBattleMons[battler].volatiles.gastroAcid)
            continue;
        if (GetBattlerHoldEffectIgnoreAbility(battler) != HOLD_EFFECT_ABILITY_SHIELD
         && isNeutralizingGasOnField
         && gBattleMons[battler].ability != ABILITY_NEUTRALIZING_GAS)
            continue;

        if (GetBattlerVolatile(battler, fieldEffect))
            return TRUE;
    }

    return FALSE;
}

static inline uq4_12_t ApplyOffensiveBadgeBoost(uq4_12_t modifier, u32 battler, u32 move)
{
    if (ShouldGetStatBadgeBoost(B_FLAG_BADGE_BOOST_ATTACK, battler) && IsBattleMovePhysical(move))
        modifier = uq4_12_multiply_half_down(modifier, GetBadgeBoostModifier());
    if (ShouldGetStatBadgeBoost(B_FLAG_BADGE_BOOST_SPATK, battler) && IsBattleMoveSpecial(move))
        modifier = uq4_12_multiply_half_down(modifier, GetBadgeBoostModifier());
    return modifier;
}

static inline uq4_12_t ApplyDefensiveBadgeBoost(uq4_12_t modifier, u32 battler, u32 move)
{
    if (ShouldGetStatBadgeBoost(B_FLAG_BADGE_BOOST_DEFENSE, battler) && IsBattleMovePhysical(move))
        modifier = uq4_12_multiply_half_down(modifier, GetBadgeBoostModifier());
    if (ShouldGetStatBadgeBoost(B_FLAG_BADGE_BOOST_SPDEF, battler) && IsBattleMoveSpecial(move))
        modifier = uq4_12_multiply_half_down(modifier, GetBadgeBoostModifier());
    return modifier;
}

static inline u32 CalcAttackStat(struct DamageContext *ctx)
{
    u8 atkStage;
    u32 atkStat;
    uq4_12_t modifier;
    u16 atkBaseSpeciesId;
    u32 battlerAtk = ctx->battlerAtk;
    u32 battlerDef = ctx->battlerDef;
    u32 move = ctx->move;
    enum Type moveType = ctx->moveType;
    enum BattleMoveEffects moveEffect = GetMoveEffect(move);

    atkBaseSpeciesId = GET_BASE_SPECIES_ID(gBattleMons[battlerAtk].species);

    if (moveEffect == EFFECT_FOUL_PLAY)
    {
        if (IsBattleMovePhysical(move))
        {
            atkStat = gBattleMons[battlerDef].attack;
            atkStage = gBattleMons[battlerDef].statStages[STAT_ATK];
        }
        else
        {
            atkStat = gBattleMons[battlerDef].spAttack;
            atkStage = gBattleMons[battlerDef].statStages[STAT_SPATK];
        }
    }
    else if (moveEffect == EFFECT_BODY_PRESS)
    {
        if (IsBattleMovePhysical(move))
        {
            atkStat = gBattleMons[battlerAtk].defense;
            // Edge case: Body Press used during Wonder Room. For some reason, it still uses Defense over Sp.Def, but uses Sp.Def stat changes
            if (gFieldStatuses & STATUS_FIELD_WONDER_ROOM)
                atkStage = gBattleMons[battlerAtk].statStages[STAT_SPDEF];
            else
                atkStage = gBattleMons[battlerAtk].statStages[STAT_DEF];
        }
        else
        {
            atkStat = gBattleMons[battlerAtk].spDefense;
            atkStage = gBattleMons[battlerAtk].statStages[STAT_SPDEF];
        }
    }
    else
    {
        if (IsBattleMovePhysical(move))
        {
            atkStat = gBattleMons[battlerAtk].attack;
            atkStage = gBattleMons[battlerAtk].statStages[STAT_ATK];
        }
        else
        {
            atkStat = gBattleMons[battlerAtk].spAttack;
            atkStage = gBattleMons[battlerAtk].statStages[STAT_SPATK];
        }
    }

    // critical hits ignore attack stat's stage drops
    if (ctx->isCrit && atkStage < DEFAULT_STAT_STAGE)
        atkStage = DEFAULT_STAT_STAGE;
    // pokemon with unaware ignore attack stat changes while taking damage
    if (ctx->abilityDef == ABILITY_UNAWARE)
        atkStage = DEFAULT_STAT_STAGE;

    atkStat *= gStatStageRatios[atkStage][0];
    atkStat /= gStatStageRatios[atkStage][1];

    // apply attack stat modifiers
    modifier = UQ_4_12(1.0);

    if (ctx->isSelfInflicted)
        return uq4_12_multiply_by_int_half_down(ApplyOffensiveBadgeBoost(modifier, battlerAtk, move), atkStat);

    // attacker's abilities
    switch (ctx->abilityAtk)
    {
    case ABILITY_HUGE_POWER:
    case ABILITY_PURE_POWER:
        if (IsBattleMovePhysical(move))
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(2.0));
        break;
    case ABILITY_SLOW_START:
        if (gDisableStructs[battlerAtk].slowStartTimer > 0)
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(0.5));
        break;
    case ABILITY_SOLAR_POWER:
        if (IsBattleMoveSpecial(move) && IsBattlerWeatherAffected(battlerAtk, B_WEATHER_SUN))
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
        break;
    case ABILITY_DEFEATIST:
        if (gBattleMons[battlerAtk].hp <= (gBattleMons[battlerAtk].maxHP / 2))
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(0.5));
        break;
    case ABILITY_FLASH_FIRE:
        if (moveType == TYPE_FIRE && gDisableStructs[battlerAtk].flashFireBoosted)
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
        break;
    case ABILITY_SWARM:
        if (moveType == TYPE_BUG && gBattleMons[battlerAtk].hp <= (gBattleMons[battlerAtk].maxHP / 3))
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
        break;
    case ABILITY_TORRENT:
        if (moveType == TYPE_WATER && gBattleMons[battlerAtk].hp <= (gBattleMons[battlerAtk].maxHP / 3))
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
        break;
    case ABILITY_BLAZE:
        if (moveType == TYPE_FIRE && gBattleMons[battlerAtk].hp <= (gBattleMons[battlerAtk].maxHP / 3))
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
        break;
    case ABILITY_OVERGROW:
        if (moveType == TYPE_GRASS && gBattleMons[battlerAtk].hp <= (gBattleMons[battlerAtk].maxHP / 3))
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
        break;
    case ABILITY_PLUS:
        if (IsBattleMoveSpecial(move) && IsBattlerAlive(BATTLE_PARTNER(battlerAtk)))
        {
            enum Ability partnerAbility = GetBattlerAbility(BATTLE_PARTNER(battlerAtk));
            if (partnerAbility == ABILITY_MINUS
            || (B_PLUS_MINUS_INTERACTION >= GEN_5 && partnerAbility == ABILITY_PLUS))
                modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
        }
        break;
    case ABILITY_MINUS:
        if (IsBattleMoveSpecial(move) && IsBattlerAlive(BATTLE_PARTNER(battlerAtk)))
        {
            enum Ability partnerAbility = GetBattlerAbility(BATTLE_PARTNER(battlerAtk));
            if (partnerAbility == ABILITY_PLUS
            || (B_PLUS_MINUS_INTERACTION >= GEN_5 && partnerAbility == ABILITY_MINUS))
                modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
        }
        break;
    case ABILITY_FLOWER_GIFT:
        if (gBattleMons[battlerAtk].species == SPECIES_CHERRIM_SUNSHINE && IsBattlerWeatherAffected(battlerAtk, B_WEATHER_SUN) && IsBattleMovePhysical(move))
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
        break;
    case ABILITY_HUSTLE:
        if (IsBattleMovePhysical(move))
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
        break;
    case ABILITY_STAKEOUT:
        if (gDisableStructs[battlerDef].isFirstTurn == 2) // just switched in
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(2.0));
        break;
    case ABILITY_GUTS:
        if (gBattleMons[battlerAtk].status1 & STATUS1_ANY && IsBattleMovePhysical(move))
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
        break;
    case ABILITY_TRANSISTOR:
        if (moveType == TYPE_ELECTRIC)
        {
            if (GetGenConfig(GEN_CONFIG_TRANSISTOR_BOOST) >= GEN_9)
                modifier = uq4_12_multiply(modifier, UQ_4_12(1.3));
            else
                modifier = uq4_12_multiply(modifier, UQ_4_12(1.5));
        }
        break;
    case ABILITY_DRAGONS_MAW:
        if (moveType == TYPE_DRAGON)
            modifier = uq4_12_multiply(modifier, UQ_4_12(1.5));
        break;
    case ABILITY_GORILLA_TACTICS:
        if (IsBattleMovePhysical(move))
            modifier = uq4_12_multiply(modifier, UQ_4_12(1.5));
        break;
    case ABILITY_ROCKY_PAYLOAD:
        if (moveType == TYPE_ROCK)
            modifier = uq4_12_multiply(modifier, UQ_4_12(1.5));
        break;
    case ABILITY_PROTOSYNTHESIS:
        if (!(gBattleMons[battlerAtk].volatiles.transformed))
        {
            enum Stat atkHighestStat = GetHighestStatId(battlerAtk);
            if (((ctx->weather & B_WEATHER_SUN) && HasWeatherEffect()) || gDisableStructs[battlerAtk].boosterEnergyActivated)
            {
                if ((IsBattleMovePhysical(move) && atkHighestStat == STAT_ATK) || (IsBattleMoveSpecial(move) && atkHighestStat == STAT_SPATK))
                    modifier = uq4_12_multiply(modifier, UQ_4_12(1.3));
            }
        }
        break;
    case ABILITY_QUARK_DRIVE:
        if (!(gBattleMons[battlerAtk].volatiles.transformed))
        {
            enum Stat atkHighestStat = GetHighestStatId(battlerAtk);
            if (gFieldStatuses & STATUS_FIELD_ELECTRIC_TERRAIN || gDisableStructs[battlerAtk].boosterEnergyActivated)
            {
                if ((IsBattleMovePhysical(move) && atkHighestStat == STAT_ATK) || (IsBattleMoveSpecial(move) && atkHighestStat == STAT_SPATK))
                    modifier = uq4_12_multiply(modifier, UQ_4_12(1.3));
            }
        }
        break;
    case ABILITY_ORICHALCUM_PULSE:
        if ((ctx->weather & B_WEATHER_SUN) && HasWeatherEffect() && IsBattleMovePhysical(move))
           modifier = uq4_12_multiply(modifier, UQ_4_12(1.3333));
        break;
    case ABILITY_HADRON_ENGINE:
        if (gFieldStatuses & STATUS_FIELD_ELECTRIC_TERRAIN && IsBattleMoveSpecial(move))
           modifier = uq4_12_multiply(modifier, UQ_4_12(1.3333));
        break;
    default:
        break;
    }

    // target's abilities
    switch (ctx->abilityDef)
    {
    case ABILITY_THICK_FAT:
        if (moveType == TYPE_FIRE || moveType == TYPE_ICE)
        {
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(0.5));
            if (ctx->updateFlags)
                RecordAbilityBattle(battlerDef, ABILITY_THICK_FAT);
        }
        break;
    case ABILITY_PURIFYING_SALT:
        if (moveType == TYPE_GHOST)
        {
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(0.5));
            if (ctx->updateFlags)
                RecordAbilityBattle(battlerDef, ABILITY_PURIFYING_SALT);
        }
        break;
    default:
        break;
    }

    // ally's abilities
    if (IsBattlerAlive(BATTLE_PARTNER(battlerAtk)))
    {
        switch (GetBattlerAbility(BATTLE_PARTNER(battlerAtk)))
        {
        case ABILITY_FLOWER_GIFT:
            if (gBattleMons[BATTLE_PARTNER(battlerAtk)].species == SPECIES_CHERRIM_SUNSHINE && IsBattlerWeatherAffected(BATTLE_PARTNER(battlerAtk), B_WEATHER_SUN) && IsBattleMovePhysical(move))
                modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
            break;
        default:
            break;
        }
    }

    // Ruin field effects
    if (IsBattleMoveSpecial(move) && !gBattleMons[ctx->battlerAtk].volatiles.vesselOfRuin && IsRuinStatusActive(VOLATILE_VESSEL_OF_RUIN))
        modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(0.75));

    if (IsBattleMovePhysical(move) && !gBattleMons[ctx->battlerAtk].volatiles.tabletsOfRuin && IsRuinStatusActive(VOLATILE_TABLETS_OF_RUIN))
        modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(0.75));

    // attacker's hold effect
    switch (ctx->holdEffectAtk)
    {
    case HOLD_EFFECT_THICK_CLUB:
        if ((atkBaseSpeciesId == SPECIES_CUBONE || atkBaseSpeciesId == SPECIES_MAROWAK) && IsBattleMovePhysical(move))
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(2.0));
        break;
    case HOLD_EFFECT_DEEP_SEA_TOOTH:
        if (gBattleMons[battlerAtk].species == SPECIES_CLAMPERL && IsBattleMoveSpecial(move))
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(2.0));
        break;
    case HOLD_EFFECT_LIGHT_BALL:
        if (atkBaseSpeciesId == SPECIES_PIKACHU && (B_LIGHT_BALL_ATTACK_BOOST >= GEN_4 || IsBattleMoveSpecial(move)))
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(2.0));
        break;
    case HOLD_EFFECT_CHOICE_BAND:
        if (IsBattleMovePhysical(move) && GetActiveGimmick(battlerAtk) != GIMMICK_DYNAMAX)
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
        break;
    case HOLD_EFFECT_CHOICE_SPECS:
        if (IsBattleMoveSpecial(move) && GetActiveGimmick(battlerAtk) != GIMMICK_DYNAMAX)
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
        break;
    default:
        break;
    }

    modifier = ApplyOffensiveBadgeBoost(modifier, battlerAtk, move);

    return uq4_12_multiply_by_int_half_down(modifier, atkStat);
}

static bool32 CanEvolve(u32 species)
{
    u32 i;
    const struct Evolution *evolutions = GetSpeciesEvolutions(species);

    if (evolutions != NULL)
    {
        for (i = 0; evolutions[i].method != EVOLUTIONS_END; i++)
        {
            if (evolutions[i].method
             && SanitizeSpeciesId(evolutions[i].targetSpecies) != SPECIES_NONE)
                return TRUE;
        }
    }
    return FALSE;
}

static inline u32 CalcDefenseStat(struct DamageContext *ctx)
{
    bool32 usesDefStat;
    u8 defStage;
    u32 defStat, def, spDef;
    uq4_12_t modifier;
    u32 battlerDef = ctx->battlerDef;
    u32 move = ctx->move;
    enum BattleMoveEffects moveEffect = GetMoveEffect(move);

    def = gBattleMons[battlerDef].defense;
    spDef = gBattleMons[battlerDef].spDefense;

    if (moveEffect == EFFECT_PSYSHOCK || IsBattleMovePhysical(move)) // uses defense stat instead of sp.def
    {
        if (gFieldStatuses & STATUS_FIELD_WONDER_ROOM) // the defense stats are swapped
        {
            defStat = spDef;
            usesDefStat = FALSE;
        }
        else
        {
            defStat = def;
            usesDefStat = TRUE;
        }
        defStage = gBattleMons[battlerDef].statStages[STAT_DEF];
    }
    else // is special
    {
        if (gFieldStatuses & STATUS_FIELD_WONDER_ROOM) // the defense stats are swapped
        {
            defStat = def;
            usesDefStat = TRUE;
        }
        else
        {
            defStat = spDef;
            usesDefStat = FALSE;
        }
        defStage = gBattleMons[battlerDef].statStages[STAT_SPDEF];
    }

    // Self-destruct / Explosion cut defense in half
    if (B_EXPLOSION_DEFENSE < GEN_5 && (moveEffect == EFFECT_EXPLOSION
                                     || moveEffect == EFFECT_MISTY_EXPLOSION))
        defStat /= 2;

    // critical hits ignore positive stat changes
    if (ctx->isCrit && defStage > DEFAULT_STAT_STAGE)
        defStage = DEFAULT_STAT_STAGE;
    // pokemon with unaware ignore defense stat changes while dealing damage
    if (ctx->abilityAtk == ABILITY_UNAWARE)
        defStage = DEFAULT_STAT_STAGE;
    // certain moves also ignore stat changes
    if (MoveIgnoresDefenseEvasionStages(move))
        defStage = DEFAULT_STAT_STAGE;

    defStat *= gStatStageRatios[defStage][0];
    defStat /= gStatStageRatios[defStage][1];

    // apply defense stat modifiers
    modifier = UQ_4_12(1.0);

    if (ctx->isSelfInflicted)
        return uq4_12_multiply_by_int_half_down(ApplyDefensiveBadgeBoost(modifier, battlerDef, move), defStat);

    // target's abilities
    switch (ctx->abilityDef)
    {
    case ABILITY_MARVEL_SCALE:
        if (gBattleMons[battlerDef].status1 & STATUS1_ANY && usesDefStat)
        {
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
            if (ctx->updateFlags)
                RecordAbilityBattle(battlerDef, ABILITY_MARVEL_SCALE);
        }
        break;
    case ABILITY_FUR_COAT:
        if (usesDefStat)
        {
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(2.0));
            if (ctx->updateFlags)
                RecordAbilityBattle(battlerDef, ABILITY_FUR_COAT);
        }
        break;
    case ABILITY_GRASS_PELT:
        if (gFieldStatuses & STATUS_FIELD_GRASSY_TERRAIN && usesDefStat)
        {
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
            if (ctx->updateFlags)
                RecordAbilityBattle(battlerDef, ABILITY_GRASS_PELT);
        }
        break;
    case ABILITY_FLOWER_GIFT:
        if (gBattleMons[battlerDef].species == SPECIES_CHERRIM_SUNSHINE && IsBattlerWeatherAffected(battlerDef, B_WEATHER_SUN) && !usesDefStat)
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
        break;
    default:
        break;
    }

    // ally's abilities
    if (IsBattlerAlive(BATTLE_PARTNER(battlerDef)))
    {
        switch (GetBattlerAbility(BATTLE_PARTNER(battlerDef)))
        {
        case ABILITY_FLOWER_GIFT:
            if (gBattleMons[BATTLE_PARTNER(battlerDef)].species == SPECIES_CHERRIM_SUNSHINE && IsBattlerWeatherAffected(BATTLE_PARTNER(battlerDef), B_WEATHER_SUN) && !usesDefStat)
                modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
            break;
        default:
            break;
        }
    }

    // Ruin field effects
    if (usesDefStat && !gBattleMons[ctx->battlerDef].volatiles.swordOfRuin && IsRuinStatusActive(VOLATILE_SWORD_OF_RUIN))
        modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(0.75));

    if (!usesDefStat && !gBattleMons[ctx->battlerDef].volatiles.beadsOfRuin && IsRuinStatusActive(VOLATILE_BEADS_OF_RUIN))
        modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(0.75));

    // target's hold effects
    switch (ctx->holdEffectDef)
    {
    case HOLD_EFFECT_DEEP_SEA_SCALE:
        if (gBattleMons[battlerDef].species == SPECIES_CLAMPERL && !usesDefStat)
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(2.0));
        break;
    case HOLD_EFFECT_METAL_POWDER:
        if (gBattleMons[battlerDef].species == SPECIES_DITTO && usesDefStat && !(gBattleMons[battlerDef].volatiles.transformed))
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(2.0));
        break;
    case HOLD_EFFECT_EVIOLITE:
        if (CanEvolve(gBattleMons[battlerDef].species))
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
        break;
    case HOLD_EFFECT_ASSAULT_VEST:
        if (!usesDefStat)
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
        break;
    case HOLD_EFFECT_SOUL_DEW:
        if (B_SOUL_DEW_BOOST < GEN_7
         && (gBattleMons[battlerDef].species == SPECIES_LATIAS || gBattleMons[battlerDef].species == SPECIES_LATIOS)
         && !(gBattleTypeFlags & BATTLE_TYPE_FRONTIER)
         && !usesDefStat)
            modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
        break;
    default:
        break;
    }

    // sandstorm sp.def boost for rock types
    if (B_SANDSTORM_SPDEF_BOOST >= GEN_4 && IS_BATTLER_OF_TYPE(battlerDef, TYPE_ROCK) && IsBattlerWeatherAffected(battlerDef, B_WEATHER_SANDSTORM) && !usesDefStat)
        modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));
    // snow def boost for ice types
    if (IS_BATTLER_OF_TYPE(battlerDef, TYPE_ICE) && IsBattlerWeatherAffected(battlerDef, B_WEATHER_SNOW) && usesDefStat)
        modifier = uq4_12_multiply_half_down(modifier, UQ_4_12(1.5));

    modifier = ApplyDefensiveBadgeBoost(modifier, battlerDef, move);

    return uq4_12_multiply_by_int_half_down(modifier, defStat);
}

// base damage formula before adding any modifiers
static inline s32 CalculateBaseDamage(u32 power, u32 userFinalAttack, u32 level, u32 targetFinalDefense)
{
    return power * userFinalAttack * (2 * level / 5 + 2) / targetFinalDefense / 50 + 2;
}

static inline uq4_12_t GetTargetDamageModifier(struct DamageContext *ctx)
{
    if (IsDoubleBattle() && GetMoveTargetCount(ctx) >= 2)
        return B_MULTIPLE_TARGETS_DMG >= GEN_4 ? UQ_4_12(0.75) : UQ_4_12(0.5);
    return UQ_4_12(1.0);
}

static inline uq4_12_t GetParentalBondModifier(u32 battlerAtk)
{
    if (gSpecialStatuses[battlerAtk].parentalBondState != PARENTAL_BOND_2ND_HIT)
        return UQ_4_12(1.0);
    return B_PARENTAL_BOND_DMG >= GEN_7 ? UQ_4_12(0.25) : UQ_4_12(0.5);
}

static inline uq4_12_t GetSameTypeAttackBonusModifier(struct DamageContext *ctx)
{
    if (ctx->moveType == TYPE_MYSTERY)
        return UQ_4_12(1.0);
    else if (gBattleStruct->pledgeMove && IS_BATTLER_OF_TYPE(BATTLE_PARTNER(ctx->battlerAtk), ctx->moveType))
        return (ctx->abilityAtk == ABILITY_ADAPTABILITY) ? UQ_4_12(2.0) : UQ_4_12(1.5);
    else if (!IS_BATTLER_OF_TYPE(ctx->battlerAtk, ctx->moveType) || ctx->move == MOVE_STRUGGLE || ctx->move == MOVE_NONE)
        return UQ_4_12(1.0);
    return (ctx->abilityAtk == ABILITY_ADAPTABILITY) ? UQ_4_12(2.0) : UQ_4_12(1.5);
}

// Utility Umbrella holders take normal damage from what would be rain- and sun-weakened attacks.
static uq4_12_t GetWeatherDamageModifier(struct DamageContext *ctx)
{
    if (ctx->weather == B_WEATHER_NONE)
        return UQ_4_12(1.0);
    if (GetMoveEffect(ctx->move) == EFFECT_HYDRO_STEAM && (ctx->weather & B_WEATHER_SUN) && ctx->holdEffectAtk != HOLD_EFFECT_UTILITY_UMBRELLA)
        return UQ_4_12(1.5);
    if (ctx->holdEffectDef == HOLD_EFFECT_UTILITY_UMBRELLA)
        return UQ_4_12(1.0);

    if (ctx->weather & B_WEATHER_RAIN)
    {
        if (ctx->moveType != TYPE_FIRE && ctx->moveType != TYPE_WATER)
            return UQ_4_12(1.0);
        return (ctx->moveType == TYPE_FIRE) ? UQ_4_12(0.5) : UQ_4_12(1.5);
    }
    if (ctx->weather & B_WEATHER_SUN)
    {
        if (ctx->moveType != TYPE_FIRE && ctx->moveType != TYPE_WATER)
            return UQ_4_12(1.0);
        return (ctx->moveType == TYPE_WATER) ? UQ_4_12(0.5) : UQ_4_12(1.5);
    }
    return UQ_4_12(1.0);
}

static inline uq4_12_t GetBurnOrFrostBiteModifier(struct DamageContext *ctx)
{
    enum BattleMoveEffects moveEffect = GetMoveEffect(ctx->move);

    if (gBattleMons[ctx->battlerAtk].status1 & STATUS1_BURN
        && IsBattleMovePhysical(ctx->move)
        && (B_BURN_FACADE_DMG < GEN_6 || moveEffect != EFFECT_FACADE)
        && ctx->abilityAtk != ABILITY_GUTS)
        return UQ_4_12(0.5);
    if (gBattleMons[ctx->battlerAtk].status1 & STATUS1_FROSTBITE
        && IsBattleMoveSpecial(ctx->move)
        && (B_BURN_FACADE_DMG < GEN_6 || moveEffect != EFFECT_FACADE))
        return UQ_4_12(0.5);
    return UQ_4_12(1.0);
}

static inline uq4_12_t GetCriticalModifier(bool32 isCrit)
{
    if (isCrit)
        return GetGenConfig(GEN_CONFIG_CRIT_MULTIPLIER) >= GEN_6 ? UQ_4_12(1.5) : UQ_4_12(2.0);
    return UQ_4_12(1.0);
}

static inline uq4_12_t GetGlaiveRushModifier(u32 battlerDef)
{
    if (gBattleMons[battlerDef].volatiles.glaiveRush)
        return UQ_4_12(2.0);
    return UQ_4_12(1.0);
}

static inline uq4_12_t GetZMaxMoveAgainstProtectionModifier(struct DamageContext *ctx)
{
    if (!IsZMove(ctx->move) && !IsMaxMove(ctx->move))
        return UQ_4_12(1.0);

    u32 protected = gProtectStructs[ctx->battlerDef].protected;
    if (GetProtectType(protected) == PROTECT_TYPE_SINGLE && protected != PROTECT_MAX_GUARD)
        return UQ_4_12(0.25);
    return UQ_4_12(1.0);
}

static inline uq4_12_t GetMinimizeModifier(u32 move, u32 battlerDef)
{
    if (MoveIncreasesPowerToMinimizedTargets(move) && gBattleMons[battlerDef].volatiles.minimize)
        return UQ_4_12(2.0);
    return UQ_4_12(1.0);
}

static inline uq4_12_t GetUndergroundModifier(u32 move, u32 battlerDef)
{
    if (MoveDamagesUnderground(move) && gBattleMons[battlerDef].volatiles.semiInvulnerable == STATE_UNDERGROUND)
        return UQ_4_12(2.0);
    return UQ_4_12(1.0);
}

static inline uq4_12_t GetDiveModifier(u32 move, u32 battlerDef)
{
    if (MoveDamagesUnderWater(move) && gBattleMons[battlerDef].volatiles.semiInvulnerable == STATE_UNDERWATER)
        return UQ_4_12(2.0);
    return UQ_4_12(1.0);
}

static inline uq4_12_t GetAirborneModifier(u32 move, u32 battlerDef)
{
    if (MoveDamagesAirborneDoubleDamage(move) && gBattleMons[battlerDef].volatiles.semiInvulnerable == STATE_ON_AIR)
        return UQ_4_12(2.0);
    return UQ_4_12(1.0);
}

static inline uq4_12_t GetScreensModifier(struct DamageContext *ctx)
{
    u32 sideStatus = gSideStatuses[GetBattlerSide(ctx->battlerDef)];
    bool32 lightScreen = (sideStatus & SIDE_STATUS_LIGHTSCREEN) && IsBattleMoveSpecial(ctx->move);
    bool32 reflect = (sideStatus & SIDE_STATUS_REFLECT) && IsBattleMovePhysical(ctx->move);
    bool32 auroraVeil = sideStatus & SIDE_STATUS_AURORA_VEIL;

    if (ctx->isCrit || gProtectStructs[ctx->battlerAtk].confusionSelfDmg)
    {
        return UQ_4_12(1.0);
    }
    if (ctx->abilityAtk == ABILITY_INFILTRATOR)
    {
        if (ctx->updateFlags)
            RecordAbilityBattle(ctx->battlerAtk, ctx->abilityDef);
        return UQ_4_12(1.0);
    }
    if (reflect || lightScreen || auroraVeil)
    {
        return (IsDoubleBattle()) ? UQ_4_12(0.667) : UQ_4_12(0.5);
    }
    return UQ_4_12(1.0);
}

static inline uq4_12_t GetCollisionCourseElectroDriftModifier(u32 move, uq4_12_t typeEffectivenessModifier)
{
    if (GetMoveEffect(move) == EFFECT_COLLISION_COURSE && typeEffectivenessModifier >= UQ_4_12(2.0))
        return UQ_4_12(1.3333);
    return UQ_4_12(1.0);
}

static inline uq4_12_t GetAttackerAbilitiesModifier(u32 battlerAtk, uq4_12_t typeEffectivenessModifier, bool32 isCrit, enum Ability abilityAtk)
{
    switch (abilityAtk)
    {
    case ABILITY_NEUROFORCE:
        if (typeEffectivenessModifier >= UQ_4_12(2.0))
            return UQ_4_12(1.25);
        break;
    case ABILITY_SNIPER:
        if (isCrit)
            return UQ_4_12(1.5);
        break;
    case ABILITY_TINTED_LENS:
        if (typeEffectivenessModifier <= UQ_4_12(0.5))
            return UQ_4_12(2.0);
        break;
    default:
        break;
    }
    return UQ_4_12(1.0);
}

static inline uq4_12_t GetDefenderAbilitiesModifier(struct DamageContext *ctx)
{
    bool32 recordAbility = FALSE;
    uq4_12_t modifier = UQ_4_12(1.0);

    switch (ctx->abilityDef)
    {
    case ABILITY_MULTISCALE:
    case ABILITY_SHADOW_SHIELD:
        if (IsBattlerAtMaxHp(ctx->battlerDef))
        {
            modifier = UQ_4_12(0.5);
            recordAbility = TRUE;
        }
        break;
    case ABILITY_FILTER:
    case ABILITY_SOLID_ROCK:
    case ABILITY_PRISM_ARMOR:
        if (ctx->typeEffectivenessModifier >= UQ_4_12(2.0))
        {
            modifier = UQ_4_12(0.75);
            recordAbility = TRUE;
        }
        break;
    case ABILITY_FLUFFY:
        if (ctx->moveType == TYPE_FIRE && !IsMoveMakingContact(ctx->battlerAtk, ctx->battlerDef, ABILITY_NONE, ctx->holdEffectAtk, ctx->move))
        {
            modifier = UQ_4_12(2.0);
            recordAbility = TRUE;
        }
        if (ctx->moveType != TYPE_FIRE && IsMoveMakingContact(ctx->battlerAtk, ctx->battlerDef, ABILITY_NONE, ctx->holdEffectAtk, ctx->move))
        {
            modifier = UQ_4_12(0.5);
            recordAbility = TRUE;
        }
        break;
    case ABILITY_PUNK_ROCK:
        if (IsSoundMove(ctx->move))
        {
            modifier = UQ_4_12(0.5);
            recordAbility = TRUE;
        }
        break;
    case ABILITY_ICE_SCALES:
        if (IsBattleMoveSpecial(ctx->move))
        {
            modifier =  UQ_4_12(0.5);
            recordAbility = TRUE;
        }
        break;
    default:
        break;
    }

    if (recordAbility && ctx->updateFlags)
        RecordAbilityBattle(ctx->battlerAtk, ctx->abilityDef);

    return modifier;
}

static inline uq4_12_t GetDefenderPartnerAbilitiesModifier(u32 battlerPartnerDef)
{
    if (!IsBattlerAlive(battlerPartnerDef))
        return UQ_4_12(1.0);

    switch (GetBattlerAbility(battlerPartnerDef))
    {
    case ABILITY_FRIEND_GUARD:
        return UQ_4_12(0.75);
        break;
    default:
        break;
    }
    return UQ_4_12(1.0);
}

static inline uq4_12_t GetAttackerItemsModifier(u32 battlerAtk, uq4_12_t typeEffectivenessModifier, enum HoldEffect holdEffectAtk)
{
    u32 metronomeTurns;
    uq4_12_t metronomeBoostBase;
    switch (holdEffectAtk)
    {
    case HOLD_EFFECT_METRONOME:
        metronomeBoostBase = PercentToUQ4_12(GetBattlerHoldEffectParam(battlerAtk));
        metronomeTurns = min(gBattleStruct->metronomeItemCounter[battlerAtk], 5);
        // according to bulbapedia this is the "correct" way to calculate the metronome boost
        // due to the limited domain of damage numbers it will never really matter whether this is off by one
        return uq4_12_add(UQ_4_12(1.0), metronomeBoostBase * metronomeTurns);
        break;
    case HOLD_EFFECT_EXPERT_BELT:
        if (typeEffectivenessModifier >= UQ_4_12(2.0))
            return UQ_4_12(1.2);
        break;
    case HOLD_EFFECT_LIFE_ORB:
        return UQ_4_12_FLOORED(1.3);
        break;
    default:
        break;
    }
    return UQ_4_12(1.0);
}

static inline uq4_12_t GetDefenderItemsModifier(struct DamageContext *ctx)
{
    switch (ctx->holdEffectDef)
    {
    case HOLD_EFFECT_RESIST_BERRY:
        if (IsUnnerveBlocked(ctx->battlerDef, gBattleMons[ctx->battlerDef].item))
            return UQ_4_12(1.0);
        if (ctx->moveType == GetBattlerHoldEffectParam(ctx->battlerDef) && (ctx->moveType == TYPE_NORMAL || ctx->typeEffectivenessModifier >= UQ_4_12(2.0)))
        {
            if (ctx->updateFlags)
                gSpecialStatuses[ctx->battlerDef].berryReduced = TRUE;
            return (ctx->abilityDef == ABILITY_RIPEN) ? UQ_4_12(0.25) : UQ_4_12(0.5);
        }
        break;
    default:
        break;
    }
    return UQ_4_12(1.0);
}

#define DAMAGE_MULTIPLY_MODIFIER(modifier) do {                     \
    finalModifier = uq4_12_multiply_half_down(modifier, finalModifier); \
} while (0)

// Calculates the "other" modifier which accounts for held items, abilities,
// or very specific interactions of moves that are not handled in the basic
// damage calculation. It is implemented as described by bulbapedia:
// https://bulbapedia.bulbagarden.net/wiki/Damage#Generation_V_onward
// Please Note: Fixed Point Multiplication is not associative.
// The order of operations is relevant.
static inline uq4_12_t GetOtherModifiers(struct DamageContext *ctx)
{
    uq4_12_t finalModifier = UQ_4_12(1.0);
    u32 battlerDefPartner = BATTLE_PARTNER(ctx->battlerDef);
    u32 unmodifiedAttackerSpeed = gBattleMons[ctx->battlerAtk].speed;
    u32 unmodifiedDefenderSpeed = gBattleMons[ctx->battlerDef].speed;

    //TODO: Behemoth Blade, Behemoth Bash, Dynamax Cannon (Dynamax)
    DAMAGE_MULTIPLY_MODIFIER(GetMinimizeModifier(ctx->move, ctx->battlerDef));
    DAMAGE_MULTIPLY_MODIFIER(GetUndergroundModifier(ctx->move, ctx->battlerDef));
    DAMAGE_MULTIPLY_MODIFIER(GetDiveModifier(ctx->move, ctx->battlerDef));
    DAMAGE_MULTIPLY_MODIFIER(GetAirborneModifier(ctx->move, ctx->battlerDef));
    DAMAGE_MULTIPLY_MODIFIER(GetScreensModifier(ctx));
    DAMAGE_MULTIPLY_MODIFIER(GetCollisionCourseElectroDriftModifier(ctx->move, ctx->typeEffectivenessModifier));

    if (unmodifiedAttackerSpeed >= unmodifiedDefenderSpeed)
    {
        DAMAGE_MULTIPLY_MODIFIER(GetAttackerAbilitiesModifier(ctx->battlerAtk, ctx->typeEffectivenessModifier, ctx->isCrit, ctx->abilityAtk));
        DAMAGE_MULTIPLY_MODIFIER(GetDefenderAbilitiesModifier(ctx));
        DAMAGE_MULTIPLY_MODIFIER(GetDefenderPartnerAbilitiesModifier(battlerDefPartner));
        DAMAGE_MULTIPLY_MODIFIER(GetAttackerItemsModifier(ctx->battlerAtk, ctx->typeEffectivenessModifier, ctx->holdEffectAtk));
        DAMAGE_MULTIPLY_MODIFIER(GetDefenderItemsModifier(ctx));
    }
    else
    {
        DAMAGE_MULTIPLY_MODIFIER(GetDefenderAbilitiesModifier(ctx));
        DAMAGE_MULTIPLY_MODIFIER(GetDefenderPartnerAbilitiesModifier(battlerDefPartner));
        DAMAGE_MULTIPLY_MODIFIER(GetAttackerAbilitiesModifier(ctx->battlerAtk, ctx->typeEffectivenessModifier, ctx->isCrit, ctx->abilityAtk));
        DAMAGE_MULTIPLY_MODIFIER(GetDefenderItemsModifier(ctx));
        DAMAGE_MULTIPLY_MODIFIER(GetAttackerItemsModifier(ctx->battlerAtk, ctx->typeEffectivenessModifier, ctx->holdEffectAtk));
    }
    return finalModifier;
}

#undef DAMAGE_ACCUMULATE_MULTIPLIER

#define DAMAGE_APPLY_MODIFIER(modifier) do {               \
    dmg = uq4_12_multiply_by_int_half_down(modifier, dmg); \
} while (0)

static inline s32 DoMoveDamageCalcVars(struct DamageContext *ctx)
{
    s32 dmg;
    u32 userFinalAttack;
    u32 targetFinalDefense;

    if (ctx->fixedBasePower)
        gBattleMovePower = ctx->fixedBasePower;
    else
        gBattleMovePower = CalcMoveBasePowerAfterModifiers(ctx);

    userFinalAttack = CalcAttackStat(ctx);
    targetFinalDefense = CalcDefenseStat(ctx);

    dmg = CalculateBaseDamage(gBattleMovePower, userFinalAttack, gBattleMons[ctx->battlerAtk].level, targetFinalDefense);
    DAMAGE_APPLY_MODIFIER(GetTargetDamageModifier(ctx));
    DAMAGE_APPLY_MODIFIER(GetParentalBondModifier(ctx->battlerAtk));
    DAMAGE_APPLY_MODIFIER(GetWeatherDamageModifier(ctx));
    DAMAGE_APPLY_MODIFIER(GetCriticalModifier(ctx->isCrit));
    DAMAGE_APPLY_MODIFIER(GetGlaiveRushModifier(ctx->battlerDef));

    if (ctx->randomFactor)
    {
        dmg *= DMG_ROLL_PERCENT_HI - RandomUniform(RNG_DAMAGE_MODIFIER, 0, DMG_ROLL_PERCENT_HI - DMG_ROLL_PERCENT_LO);
        dmg /= 100;
    }
    else // Apply rest of modifiers in the ai function
    {
        if (dmg == 0)
            dmg = 1;
        return dmg;
    }

    dmg = ApplyModifiersAfterDmgRoll(ctx, dmg);

    if (dmg == 0)
        dmg = 1;
    return dmg;
}

s32 ApplyModifiersAfterDmgRoll(struct DamageContext *ctx, s32 dmg)
{
    if (GetActiveGimmick(ctx->battlerAtk) == GIMMICK_TERA)
        DAMAGE_APPLY_MODIFIER(GetTeraMultiplier(ctx));
    else
        DAMAGE_APPLY_MODIFIER(GetSameTypeAttackBonusModifier(ctx));
    DAMAGE_APPLY_MODIFIER(ctx->typeEffectivenessModifier);
    DAMAGE_APPLY_MODIFIER(GetBurnOrFrostBiteModifier(ctx));
    DAMAGE_APPLY_MODIFIER(GetZMaxMoveAgainstProtectionModifier(ctx));
    DAMAGE_APPLY_MODIFIER(GetOtherModifiers(ctx));

    return dmg;
}

s32 DoFixedDamageMoveCalc(struct DamageContext *ctx)
{
    s32 dmg = 0;
    s32 randDamage;

    switch (GetMoveEffect(ctx->move))
    {
    case EFFECT_LEVEL_DAMAGE:
        dmg = gBattleMons[ctx->battlerAtk].level;
        break;
    case EFFECT_PSYWAVE:
        randDamage = B_PSYWAVE_DMG >= GEN_5 ? (Random() % 101) : ((Random() % 11) * 10);
        dmg = gBattleMons[ctx->battlerAtk].level * (randDamage + 50) / 100;
        break;
    case EFFECT_FIXED_HP_DAMAGE:
        dmg = GetMoveFixedHPDamage(ctx->move);
        break;
    case EFFECT_FIXED_PERCENT_DAMAGE:
        dmg = GetNonDynamaxHP(ctx->battlerDef) * GetMoveDamagePercentage(ctx->move) / 100;
        break;
    case EFFECT_FINAL_GAMBIT:
        dmg = GetNonDynamaxHP(ctx->battlerAtk);
        break;
    default:
        return INT32_MAX;
    }

    gBattleStruct->moveResultFlags[ctx->battlerDef] &= ~(MOVE_RESULT_NOT_VERY_EFFECTIVE | MOVE_RESULT_SUPER_EFFECTIVE);

    if (dmg == 0)
        dmg = 1;

    return dmg;
}

static inline s32 DoMoveDamageCalc(struct DamageContext *ctx)
{
    if (ctx->typeEffectivenessModifier == UQ_4_12(0.0))
        return 0;

    s32 dmg = DoFixedDamageMoveCalc(ctx);
    if (dmg != INT32_MAX)
        return dmg;

    ctx->abilityAtk = GetBattlerAbility(ctx->battlerAtk);
    ctx->abilityDef = GetBattlerAbility(ctx->battlerDef);
    ctx->holdEffectDef = GetBattlerHoldEffect(ctx->battlerDef);
    ctx->holdEffectAtk = GetBattlerHoldEffect(ctx->battlerAtk);

    return DoMoveDamageCalcVars(ctx);
}

static inline s32 DoFutureSightAttackDamageCalcVars(struct DamageContext *ctx)
{
    s32 dmg;
    u32 userFinalAttack;
    u32 targetFinalDefense;
    u32 battlerAtk = ctx->battlerAtk;
    u32 battlerDef = ctx->battlerDef;
    u32 move = ctx->move;
    enum Type moveType = ctx->moveType;

    struct Pokemon *party = GetBattlerParty(battlerAtk);
    struct Pokemon *partyMon = &party[gWishFutureKnock.futureSightPartyIndex[battlerDef]];
    u32 partyMonLevel = GetMonData(partyMon, MON_DATA_LEVEL, NULL);
    u32 partyMonSpecies = GetMonData(partyMon, MON_DATA_SPECIES, NULL);
    gBattleMovePower = GetMovePower(move);

    if (IsBattleMovePhysical(move))
        userFinalAttack = GetMonData(partyMon, MON_DATA_ATK, NULL);
    else
        userFinalAttack = GetMonData(partyMon, MON_DATA_SPATK, NULL);

    targetFinalDefense = CalcDefenseStat(ctx);
    dmg = CalculateBaseDamage(gBattleMovePower, userFinalAttack, partyMonLevel, targetFinalDefense);

    DAMAGE_APPLY_MODIFIER(GetCriticalModifier(ctx->isCrit));

    if (ctx->randomFactor)
    {
        dmg *= DMG_ROLL_PERCENT_HI - RandomUniform(RNG_DAMAGE_MODIFIER, 0, DMG_ROLL_PERCENT_HI - DMG_ROLL_PERCENT_LO);
        dmg /= 100;
    }

    // Same type attack bonus
    if (GetSpeciesType(partyMonSpecies, 0) == moveType || GetSpeciesType(partyMonSpecies, 1) == moveType)
        DAMAGE_APPLY_MODIFIER(UQ_4_12(1.5));
    else
        DAMAGE_APPLY_MODIFIER(UQ_4_12(1.0));
    DAMAGE_APPLY_MODIFIER(ctx->typeEffectivenessModifier);

    if (dmg == 0)
        dmg = 1;

    return dmg;
}

static inline s32 DoFutureSightAttackDamageCalc(struct DamageContext *ctx)
{
    if (ctx->typeEffectivenessModifier == UQ_4_12(0.0))
        return 0;

    return DoFutureSightAttackDamageCalcVars(ctx);
}

#undef DAMAGE_APPLY_MODIFIER

static u32 GetWeather(void)
{
    if (gBattleWeather == B_WEATHER_NONE || !HasWeatherEffect())
        return B_WEATHER_NONE;
    else
        return gBattleWeather;
}

bool32 IsFutureSightAttackerInParty(u32 battlerAtk, u32 battlerDef, u32 move)
{
    if (GetMoveEffect(move) != EFFECT_FUTURE_SIGHT)
        return FALSE;

    struct Pokemon *party = GetBattlerParty(battlerAtk);
    if (IsDoubleBattle())
    {
        return &party[gWishFutureKnock.futureSightPartyIndex[battlerDef]] != &party[gBattlerPartyIndexes[battlerAtk]]
            && &party[gWishFutureKnock.futureSightPartyIndex[battlerDef]] != &party[gBattlerPartyIndexes[BATTLE_PARTNER(battlerAtk)]];
    }

    return &party[gWishFutureKnock.futureSightPartyIndex[battlerDef]] != &party[gBattlerPartyIndexes[battlerAtk]];
}

s32 CalculateMoveDamage(struct DamageContext *ctx)
{
    ctx->weather = GetWeather();
    ctx->abilityAtk = GetBattlerAbility(ctx->battlerAtk);
    ctx->abilityDef = GetBattlerAbility(ctx->battlerDef);
    ctx->holdEffectAtk = GetBattlerHoldEffect(ctx->battlerAtk);
    ctx->holdEffectDef = GetBattlerHoldEffect(ctx->battlerDef);

    ctx->typeEffectivenessModifier = CalcTypeEffectivenessMultiplier(ctx);

    if (IsFutureSightAttackerInParty(ctx->battlerAtk, ctx->battlerDef, ctx->move))
        return DoFutureSightAttackDamageCalc(ctx);

    return DoMoveDamageCalc(ctx);
}

// for AI so that typeEffectivenessModifier, weather, abilities and holdEffects are calculated only once
s32 CalculateMoveDamageVars(struct DamageContext *ctx)
{
    s32 dmg = DoFixedDamageMoveCalc(ctx);
    if (dmg != INT32_MAX)
        return dmg;

    return DoMoveDamageCalcVars(ctx);
}

static inline void MulByTypeEffectiveness(struct DamageContext *ctx, uq4_12_t *modifier, enum Type defType)
{
    uq4_12_t mod = GetTypeModifier(ctx->moveType, defType);

    if (mod == UQ_4_12(0.0) && ctx->holdEffectDef == HOLD_EFFECT_RING_TARGET)
    {
        mod = UQ_4_12(1.0);
        if (ctx->updateFlags)
            RecordItemEffectBattle(ctx->battlerDef, HOLD_EFFECT_RING_TARGET);
    }
    else if ((ctx->moveType == TYPE_FIGHTING || ctx->moveType == TYPE_NORMAL) && defType == TYPE_GHOST && gBattleMons[ctx->battlerDef].volatiles.foresight && mod == UQ_4_12(0.0))
    {
        mod = UQ_4_12(1.0);
    }
    else if ((ctx->moveType == TYPE_FIGHTING || ctx->moveType == TYPE_NORMAL) && defType == TYPE_GHOST
        && (ctx->abilityAtk == ABILITY_SCRAPPY || ctx->abilityAtk == ABILITY_MINDS_EYE)
        && mod == UQ_4_12(0.0))
    {
        mod = UQ_4_12(1.0);
        if (ctx->updateFlags)
            RecordAbilityBattle(ctx->battlerAtk, ctx->abilityAtk);
    }

    if (ctx->moveType == TYPE_PSYCHIC && defType == TYPE_DARK && gBattleMons[ctx->battlerDef].volatiles.miracleEye && mod == UQ_4_12(0.0))
        mod = UQ_4_12(1.0);
    if (GetMoveEffect(ctx->move) == EFFECT_SUPER_EFFECTIVE_ON_ARG && defType == GetMoveArgType(ctx->move) && !ctx->isAnticipation)
        mod = UQ_4_12(2.0);
    if (ctx->moveType == TYPE_GROUND && defType == TYPE_FLYING && IsBattlerGrounded(ctx->battlerDef, ctx->abilityDef, ctx->holdEffectDef) && mod == UQ_4_12(0.0))
        mod = UQ_4_12(1.0);
    if (ctx->moveType == TYPE_STELLAR && GetActiveGimmick(ctx->battlerDef) == GIMMICK_TERA)
        mod = UQ_4_12(2.0);

    // B_WEATHER_STRONG_WINDS weakens Super Effective moves against Flying-type Pokémon
    if (gBattleWeather & B_WEATHER_STRONG_WINDS && HasWeatherEffect() && !ctx->isAnticipation)
    {
        if (defType == TYPE_FLYING && mod >= UQ_4_12(2.0))
            mod = UQ_4_12(1.0);
    }

    if (gSpecialStatuses[ctx->battlerDef].distortedTypeMatchups || (mod > UQ_4_12(0.0) && ShouldTeraShellDistortTypeMatchups(ctx->move, ctx->battlerDef, ctx->abilityDef)))
    {
        mod = UQ_4_12(0.5);
        if (ctx->updateFlags)
        {
            RecordAbilityBattle(ctx->battlerDef, ctx->abilityDef);
            gSpecialStatuses[ctx->battlerDef].distortedTypeMatchups = TRUE;
            gSpecialStatuses[ctx->battlerDef].teraShellAbilityDone = TRUE;
        }
    }

    *modifier = uq4_12_multiply(*modifier, mod);
}

static inline void TryNoticeIllusionInTypeEffectiveness(u32 move, enum Type moveType, u32 battlerAtk, u32 battlerDef, uq4_12_t resultingModifier, u32 illusionSpecies)
{
    // Check if the type effectiveness would've been different if the pokemon really had the types as the disguise.
    uq4_12_t presumedModifier = UQ_4_12(1.0);

    struct DamageContext ctx = {0};
    ctx.battlerAtk = battlerAtk;
    ctx.battlerDef = battlerDef;
    ctx.move = ctx.chosenMove = move;
    ctx.moveType = moveType;
    ctx.updateFlags = FALSE;
    ctx.abilityAtk = GetBattlerAbility(battlerAtk);
    ctx.abilityDef = ABILITY_ILLUSION;
    ctx.holdEffectAtk = GetBattlerHoldEffect(battlerAtk);
    ctx.holdEffectDef = GetBattlerHoldEffect(battlerDef);

    MulByTypeEffectiveness(&ctx, &presumedModifier, GetSpeciesType(illusionSpecies, 0));
    if (GetSpeciesType(illusionSpecies, 1) != GetSpeciesType(illusionSpecies, 0))
        MulByTypeEffectiveness(&ctx, &presumedModifier, GetSpeciesType(illusionSpecies, 1));

    if (presumedModifier != resultingModifier)
        RecordAbilityBattle(ctx.battlerDef, ABILITY_ILLUSION);
}

void UpdateMoveResultFlags(uq4_12_t modifier, u16 *resultFlags)
{
    if (modifier == UQ_4_12(0.0))
    {
        *resultFlags |= MOVE_RESULT_DOESNT_AFFECT_FOE;
        *resultFlags &= ~(MOVE_RESULT_NOT_VERY_EFFECTIVE | MOVE_RESULT_SUPER_EFFECTIVE);
        gBattleStruct->blunderPolicy = FALSE; // Don't activate if missed
    }
    else if (modifier == UQ_4_12(1.0))
    {
        *resultFlags &= ~(MOVE_RESULT_NOT_VERY_EFFECTIVE | MOVE_RESULT_SUPER_EFFECTIVE | MOVE_RESULT_DOESNT_AFFECT_FOE);
    }
    else if (modifier > UQ_4_12(1.0))
    {
        *resultFlags |= MOVE_RESULT_SUPER_EFFECTIVE;
        *resultFlags &= ~(MOVE_RESULT_NOT_VERY_EFFECTIVE | MOVE_RESULT_DOESNT_AFFECT_FOE);
    }
    else //if (modifier < UQ_4_12(1.0))
    {
        *resultFlags |= MOVE_RESULT_NOT_VERY_EFFECTIVE;
        *resultFlags &= ~(MOVE_RESULT_SUPER_EFFECTIVE | MOVE_RESULT_DOESNT_AFFECT_FOE);
    }
}

static inline uq4_12_t CalcTypeEffectivenessMultiplierInternal(struct DamageContext *ctx, uq4_12_t modifier)
{
    u32 illusionSpecies;
    enum Type types[3];
    GetBattlerTypes(ctx->battlerDef, FALSE, types);

    MulByTypeEffectiveness(ctx, &modifier, types[0]);
    if (types[1] != types[0])
        MulByTypeEffectiveness(ctx, &modifier, types[1]);
    if (types[2] != TYPE_MYSTERY && types[2] != types[1] && types[2] != types[0])
        MulByTypeEffectiveness(ctx, &modifier, types[2]);
    if (ctx->moveType == TYPE_FIRE && gDisableStructs[ctx->battlerDef].tarShot)
        modifier = uq4_12_multiply(modifier, UQ_4_12(2.0));

    if (ctx->updateFlags && (illusionSpecies = GetIllusionMonSpecies(ctx->battlerDef)))
        TryNoticeIllusionInTypeEffectiveness(ctx->move, ctx->moveType, ctx->battlerAtk, ctx->battlerDef, modifier, illusionSpecies);

    if (GetMoveCategory(ctx->move) == DAMAGE_CATEGORY_STATUS && ctx->move != MOVE_THUNDER_WAVE)
    {
        modifier = UQ_4_12(1.0);
        if (B_GLARE_GHOST < GEN_4 && ctx->move == MOVE_GLARE && IS_BATTLER_OF_TYPE(ctx->battlerDef, TYPE_GHOST))
            modifier = UQ_4_12(0.0);
    }
    else if (ctx->moveType == TYPE_GROUND && !IsBattlerGroundedInverseCheck(ctx->battlerDef, ctx->abilityDef, ctx->holdEffectDef, INVERSE_BATTLE, ctx->isAnticipation) && !(MoveIgnoresTypeIfFlyingAndUngrounded(ctx->move)))
    {
        modifier = UQ_4_12(0.0);
        if (ctx->updateFlags && ctx->abilityDef == ABILITY_LEVITATE)
        {
            gBattleStruct->moveResultFlags[ctx->battlerDef] |= (MOVE_RESULT_MISSED | MOVE_RESULT_DOESNT_AFFECT_FOE);
            gLastUsedAbility = ABILITY_LEVITATE;
            gLastLandedMoves[ctx->battlerDef] = 0;
            gBattleStruct->missStringId[ctx->battlerDef] = B_MSG_GROUND_MISS;
            RecordAbilityBattle(ctx->battlerDef, ABILITY_LEVITATE);
        }
    }
    else if (GetGenConfig(GEN_CONFIG_SHEER_COLD_IMMUNITY) >= GEN_7 && GetMoveEffect(ctx->move) == EFFECT_SHEER_COLD && IS_BATTLER_OF_TYPE(ctx->battlerDef, TYPE_ICE))
    {
        modifier = UQ_4_12(0.0);
    }

    // Thousand Arrows ignores type modifiers for flying mons
    if (MoveIgnoresTypeIfFlyingAndUngrounded(ctx->move)
     && !IsBattlerGrounded(ctx->battlerDef, ctx->abilityDef, ctx->holdEffectDef)
     && IS_BATTLER_OF_TYPE(ctx->battlerDef, TYPE_FLYING))
    {
        modifier = UQ_4_12(1.0);
    }

    // Iron Ball ignores type modifiers for flying-type mons if it is the only source of grounding
    if (B_IRON_BALL >= GEN_5
        && ctx->moveType == TYPE_GROUND
        && ctx->holdEffectDef == HOLD_EFFECT_IRON_BALL
        && IS_BATTLER_OF_TYPE(ctx->battlerDef, TYPE_FLYING)
        && !IsBattlerGrounded(ctx->battlerDef, ctx->abilityDef, HOLD_EFFECT_NONE) // We want to ignore Iron Ball so skip item check
        && !FlagGet(B_FLAG_INVERSE_BATTLE))
    {
        modifier = UQ_4_12(1.0);
    }

    if (((ctx->abilityDef == ABILITY_WONDER_GUARD && modifier <= UQ_4_12(1.0))
        || (ctx->abilityDef == ABILITY_TELEPATHY && ctx->battlerDef == BATTLE_PARTNER(ctx->battlerAtk)))
        && GetMovePower(ctx->move) != 0)
    {
        modifier = UQ_4_12(0.0);
        if (ctx->updateFlags)
        {
            gLastUsedAbility = gBattleMons[ctx->battlerDef].ability;
            gBattleStruct->moveResultFlags[ctx->battlerDef] |= MOVE_RESULT_MISSED;
            gLastLandedMoves[ctx->battlerDef] = 0;
            gBattleStruct->missStringId[ctx->battlerDef] = B_MSG_AVOIDED_DMG;
            RecordAbilityBattle(ctx->battlerDef, gBattleMons[ctx->battlerDef].ability);
        }
    }

    if (ctx->updateFlags)
        TryInitializeFirstSTABMoveTrainerSlide(ctx->battlerDef, ctx->battlerAtk, ctx->moveType);

    return modifier;
}

uq4_12_t CalcTypeEffectivenessMultiplier(struct DamageContext *ctx)
{
    uq4_12_t modifier = UQ_4_12(1.0);

    if (ctx->move != MOVE_STRUGGLE && ctx->moveType != TYPE_MYSTERY)
    {
        modifier = CalcTypeEffectivenessMultiplierInternal(ctx, modifier);
        if (GetMoveEffect(ctx->move) == EFFECT_TWO_TYPED_MOVE && !ctx->isAnticipation)
        {
            ctx->moveType = GetMoveArgType(ctx->move);
            modifier = CalcTypeEffectivenessMultiplierInternal(ctx, modifier);
        }
    }

    if (ctx->updateFlags)
        UpdateMoveResultFlags(modifier, &gBattleStruct->moveResultFlags[ctx->battlerDef]);
    return modifier;
}

uq4_12_t CalcPartyMonTypeEffectivenessMultiplier(u16 move, u16 speciesDef, enum Ability abilityDef)
{
    uq4_12_t modifier = UQ_4_12(1.0);
    enum Type moveType = GetBattleMoveType(move);

    if (move != MOVE_STRUGGLE && moveType != TYPE_MYSTERY)
    {
        struct DamageContext ctx = {0};
        ctx.move = ctx.chosenMove = move;
        ctx.moveType = moveType;
        ctx.updateFlags = FALSE;
        ctx.abilityDef = abilityDef;

        MulByTypeEffectiveness(&ctx, &modifier, GetSpeciesType(speciesDef, 0));
        if (GetSpeciesType(speciesDef, 1) != GetSpeciesType(speciesDef, 0))
            MulByTypeEffectiveness(&ctx, &modifier, GetSpeciesType(speciesDef, 1));

        if (ctx.moveType == TYPE_GROUND && abilityDef == ABILITY_LEVITATE && !(gFieldStatuses & STATUS_FIELD_GRAVITY))
            modifier = UQ_4_12(0.0);
        if (abilityDef == ABILITY_WONDER_GUARD && modifier <= UQ_4_12(1.0) && GetMovePower(move) != 0)
            modifier = UQ_4_12(0.0);
    }

    return modifier;
}

static uq4_12_t GetInverseTypeMultiplier(uq4_12_t multiplier)
{
    switch (multiplier)
    {
    case UQ_4_12(0.0):
    case UQ_4_12(0.5):
        return UQ_4_12(2.0);
    case UQ_4_12(2.0):
        return UQ_4_12(0.5);
    case UQ_4_12(1.0):
    default:
        return UQ_4_12(1.0);
    }
}

uq4_12_t GetOverworldTypeEffectiveness(struct Pokemon *mon, enum Type moveType)
{
    uq4_12_t modifier = UQ_4_12(1.0);
    enum Ability abilityDef = GetMonAbility(mon);
    u16 speciesDef = GetMonData(mon, MON_DATA_SPECIES);
    enum Type type1 = GetSpeciesType(speciesDef, 0);
    enum Type type2 = GetSpeciesType(speciesDef, 1);

    if (moveType == TYPE_MYSTERY)
        return modifier;

    struct DamageContext ctx = {0};
    ctx.move = ctx.chosenMove = MOVE_POUND;
    ctx.moveType = moveType;
    ctx.updateFlags = FALSE;

    MulByTypeEffectiveness(&ctx, &modifier, type1);
    if (type2 != type1)
        MulByTypeEffectiveness(&ctx, &modifier, type2);

    if ((modifier <= UQ_4_12(1.0) && abilityDef == ABILITY_WONDER_GUARD)
     || CanAbilityAbsorbMove(0, 0, abilityDef, MOVE_NONE, moveType, CHECK_TRIGGER))
        modifier = UQ_4_12(0.0);

    return modifier;
}

uq4_12_t GetTypeModifier(enum Type atkType, enum Type defType)
{
    if (B_FLAG_INVERSE_BATTLE != 0 && FlagGet(B_FLAG_INVERSE_BATTLE))
        return GetInverseTypeMultiplier(gTypeEffectivenessTable[atkType][defType]);
    return gTypeEffectivenessTable[atkType][defType];
}

s32 GetStealthHazardDamageByTypesAndHP(enum TypeSideHazard hazardType, enum Type type1, enum Type type2, u32 maxHp)
{
    s32 dmg = 0;
    uq4_12_t modifier = UQ_4_12(1.0);

    modifier = uq4_12_multiply(modifier, GetTypeModifier((u8)hazardType, type1));
    if (type2 != type1)
        modifier = uq4_12_multiply(modifier, GetTypeModifier((u8)hazardType, type2));

    switch (modifier)
    {
    case UQ_4_12(0.0):
        dmg = 0;
        break;
    case UQ_4_12(0.25):
        dmg = maxHp / 32;
        if (dmg == 0)
            dmg = 1;
        break;
    case UQ_4_12(0.5):
        dmg = maxHp / 16;
        if (dmg == 0)
            dmg = 1;
        break;
    case UQ_4_12(1.0):
        dmg = maxHp / 8;
        if (dmg == 0)
            dmg = 1;
        break;
    case UQ_4_12(2.0):
        dmg = maxHp / 4;
        if (dmg == 0)
            dmg = 1;
        break;
    case UQ_4_12(4.0):
        dmg = maxHp / 2;
        if (dmg == 0)
            dmg = 1;
        break;
    }

    return dmg;
}

s32 GetStealthHazardDamage(enum TypeSideHazard hazardType, u32 battler)
{
    enum Type types[3];
    GetBattlerTypes(battler, FALSE, types);
    u32 maxHp = gBattleMons[battler].maxHP;

    return GetStealthHazardDamageByTypesAndHP(hazardType, types[0], types[1], maxHp);
}

bool32 IsPartnerMonFromSameTrainer(u32 battler)
{
    if (!IsOnPlayerSide(battler) && gBattleTypeFlags & BATTLE_TYPE_TWO_OPPONENTS)
        return FALSE;
    else if (IsOnPlayerSide(battler) && gBattleTypeFlags & BATTLE_TYPE_INGAME_PARTNER)
        return FALSE;
    else if (gBattleTypeFlags & BATTLE_TYPE_MULTI)
        return FALSE;
    else
        return TRUE;
}

bool32 DoesSpeciesUseHoldItemToChangeForm(u16 species, u16 heldItemId)
{
    u32 i;
    const struct FormChange *formChanges = GetSpeciesFormChanges(species);

    for (i = 0; formChanges != NULL && formChanges[i].method != FORM_CHANGE_TERMINATOR; i++)
    {
        enum FormChanges method = formChanges[i].method;
        switch (method)
        {
        case FORM_CHANGE_BATTLE_MEGA_EVOLUTION_ITEM:
        case FORM_CHANGE_BATTLE_PRIMAL_REVERSION:
        case FORM_CHANGE_BATTLE_ULTRA_BURST:
        case FORM_CHANGE_ITEM_HOLD:
        case FORM_CHANGE_BEGIN_BATTLE:
            if (formChanges[i].param1 == heldItemId)
                return TRUE;
            break;
        default:
            break;
        }
    }
    return FALSE;
}

bool32 CanMegaEvolve(u32 battler)
{
    enum HoldEffect holdEffect = GetBattlerHoldEffectIgnoreNegation(battler);

    // Check if Player has a Mega Ring.
    if (!TESTING
        && (GetBattlerPosition(battler) == B_POSITION_PLAYER_LEFT || (!(gBattleTypeFlags & BATTLE_TYPE_MULTI) && GetBattlerPosition(battler) == B_POSITION_PLAYER_RIGHT))
        && !CheckBagHasItem(ITEM_MEGA_RING, 1))
        return FALSE;

    // Check if Trainer has already Mega Evolved.
    if (HasTrainerUsedGimmick(battler, GIMMICK_MEGA))
        return FALSE;

    // Check if battler has another gimmick active.
    if (GetActiveGimmick(battler) != GIMMICK_NONE)
        return FALSE;

    // Check if battler is currently held by Sky Drop.
    if (gBattleMons[battler].volatiles.semiInvulnerable == STATE_SKY_DROP)
        return FALSE;

    // Check if battler is holding a Z-Crystal.
    if (holdEffect == HOLD_EFFECT_Z_CRYSTAL)
        return FALSE;

    // Check if there is an entry in the form change table for regular Mega Evolution and battler is holding Mega Stone.
    if (GetBattleFormChangeTargetSpecies(battler, FORM_CHANGE_BATTLE_MEGA_EVOLUTION_ITEM) != gBattleMons[battler].species && holdEffect == HOLD_EFFECT_MEGA_STONE)
        return TRUE;

    // Check if there is an entry in the form change table for Wish Mega Evolution.
    if (GetBattleFormChangeTargetSpecies(battler, FORM_CHANGE_BATTLE_MEGA_EVOLUTION_MOVE) != gBattleMons[battler].species)
        return TRUE;

    // No checks passed, the mon CAN'T mega evolve.
    return FALSE;
}

bool32 CanUltraBurst(u32 battler)
{
    enum HoldEffect holdEffect = GetBattlerHoldEffectIgnoreNegation(battler);

    // Check if Player has a Z-Ring
    if (!TESTING && (GetBattlerPosition(battler) == B_POSITION_PLAYER_LEFT
        || (!(gBattleTypeFlags & BATTLE_TYPE_MULTI) && GetBattlerPosition(battler) == B_POSITION_PLAYER_RIGHT))
        && !CheckBagHasItem(ITEM_Z_POWER_RING, 1))
        return FALSE;

    // Check if Trainer has already Ultra Bursted.
    if (HasTrainerUsedGimmick(battler, GIMMICK_ULTRA_BURST))
        return FALSE;

    // Check if battler has another gimmick active.
    if (GetActiveGimmick(battler) != GIMMICK_NONE)
        return FALSE;

    // Check if mon is currently held by Sky Drop
    if (gBattleMons[battler].volatiles.semiInvulnerable == STATE_SKY_DROP)
        return FALSE;

    // Check if there is an entry in the form change table for Ultra Burst and battler is holding a Z-Crystal.
    if (GetBattleFormChangeTargetSpecies(battler, FORM_CHANGE_BATTLE_ULTRA_BURST) != gBattleMons[battler].species && holdEffect == HOLD_EFFECT_Z_CRYSTAL)
        return TRUE;

    // No checks passed, the mon CAN'T ultra burst.
    return FALSE;
}

void ActivateMegaEvolution(u32 battler)
{
    gLastUsedItem = gBattleMons[battler].item;
    SetActiveGimmick(battler, GIMMICK_MEGA);
    if (GetBattleFormChangeTargetSpecies(battler, FORM_CHANGE_BATTLE_MEGA_EVOLUTION_MOVE) != gBattleMons[battler].species)
        BattleScriptExecute(BattleScript_WishMegaEvolution);
    else
        BattleScriptExecute(BattleScript_MegaEvolution);
}

void ActivateUltraBurst(u32 battler)
{
    gLastUsedItem = gBattleMons[battler].item;
    SetActiveGimmick(battler, GIMMICK_ULTRA_BURST);
    BattleScriptExecute(BattleScript_UltraBurst);
}

bool32 IsBattlerMegaEvolved(u32 battler)
{
    // While Transform does copy stats and visuals, it shouldn't be counted as true Mega Evolution.
    if (gBattleMons[battler].volatiles.transformed)
        return FALSE;
    return (gSpeciesInfo[gBattleMons[battler].species].isMegaEvolution);
}

bool32 IsBattlerPrimalReverted(u32 battler)
{
    // While Transform does copy stats and visuals, it shouldn't be counted as true Primal Revesion.
    if (gBattleMons[battler].volatiles.transformed)
        return FALSE;
    return (gSpeciesInfo[gBattleMons[battler].species].isPrimalReversion);
}

bool32 IsBattlerUltraBursted(u32 battler)
{
    // While Transform does copy stats and visuals, it shouldn't be counted as true Ultra Burst.
    if (gBattleMons[battler].volatiles.transformed)
        return FALSE;
    return (gSpeciesInfo[gBattleMons[battler].species].isUltraBurst);
}

bool32 IsBattlerInTeraForm(u32 battler)
{
    // While Transform does copy stats and visuals, it shouldn't be counted as a true Tera Form.
    if (gBattleMons[battler].volatiles.transformed)
        return FALSE;
    return (gSpeciesInfo[gBattleMons[battler].species].isTeraForm);
}

// Returns SPECIES_NONE if no form change is possible
u16 GetBattleFormChangeTargetSpecies(u32 battler, enum FormChanges method)
{
    u32 i;
    u32 species = gBattleMons[battler].species;
    u32 targetSpecies = species;
    const struct FormChange *formChanges = GetSpeciesFormChanges(species);
    struct Pokemon *mon = GetBattlerMon(battler);
    u16 heldItem = gBattleMons[battler].item;

    for (i = 0; formChanges != NULL && formChanges[i].method != FORM_CHANGE_TERMINATOR; i++)
    {
        if (method == formChanges[i].method && species != formChanges[i].targetSpecies)
        {
            switch (method)
            {
            case FORM_CHANGE_BATTLE_MEGA_EVOLUTION_ITEM:
            case FORM_CHANGE_BATTLE_PRIMAL_REVERSION:
            case FORM_CHANGE_BATTLE_ULTRA_BURST:
                if (heldItem == formChanges[i].param1)
                    targetSpecies = formChanges[i].targetSpecies;
                break;
            case FORM_CHANGE_BATTLE_MEGA_EVOLUTION_MOVE:
                if (gBattleMons[battler].moves[0] == formChanges[i].param1
                    || gBattleMons[battler].moves[1] == formChanges[i].param1
                    || gBattleMons[battler].moves[2] == formChanges[i].param1
                    || gBattleMons[battler].moves[3] == formChanges[i].param1)
                    targetSpecies = formChanges[i].targetSpecies;
                break;
            case FORM_CHANGE_BATTLE_SWITCH:
                if (formChanges[i].param1 == GetBattlerAbility(battler) || formChanges[i].param1 == ABILITY_NONE)
                    targetSpecies = formChanges[i].targetSpecies;
                break;
            case FORM_CHANGE_BATTLE_HP_PERCENT:
                if (formChanges[i].param1 == GetBattlerAbility(battler))
                {
                    // We multiply by 100 to make sure that integer division doesn't mess with the health check.
                    u32 hpCheck = gBattleMons[battler].hp * 100 * 100 / gBattleMons[battler].maxHP;
                    switch(formChanges[i].param2)
                    {
                    case HP_HIGHER_THAN:
                        if (hpCheck > formChanges[i].param3 * 100)
                            targetSpecies = formChanges[i].targetSpecies;
                        break;
                    case HP_LOWER_EQ_THAN:
                        if (hpCheck <= formChanges[i].param3 * 100)
                            targetSpecies = formChanges[i].targetSpecies;
                        break;
                    }
                }
                break;
            case FORM_CHANGE_BATTLE_GIGANTAMAX:
                if (GetMonData(mon, MON_DATA_GIGANTAMAX_FACTOR))
                    targetSpecies = formChanges[i].targetSpecies;
                break;
            case FORM_CHANGE_BATTLE_WEATHER:
                // Check if there is a required ability and if the battler's ability does not match it
                // or is suppressed. If so, revert to the no weather form.
                if (formChanges[i].param2
                    && GetBattlerAbility(battler) != formChanges[i].param2
                    && formChanges[i].param1 == B_WEATHER_NONE)
                {
                    targetSpecies = formChanges[i].targetSpecies;
                }
                // We need to revert the weather form if the field is under Air Lock, too.
                else if (!HasWeatherEffect() && formChanges[i].param1 == B_WEATHER_NONE)
                {
                    targetSpecies = formChanges[i].targetSpecies;
                }
                // Otherwise, just check for a match between the weather and the form change table.
                // Added a check for whether the weather is in effect to prevent end-of-turn soft locks with Cloud Nine / Air Lock
                else if (((gBattleWeather & formChanges[i].param1) && HasWeatherEffect())
                    || (gBattleWeather == B_WEATHER_NONE && formChanges[i].param1 == B_WEATHER_NONE))
                {
                    targetSpecies = formChanges[i].targetSpecies;
                }
                break;
            case FORM_CHANGE_BATTLE_TURN_END:
            case FORM_CHANGE_HIT_BY_MOVE:
                if (formChanges[i].param1 == GetBattlerAbility(battler))
                    targetSpecies = formChanges[i].targetSpecies;
                break;
            case FORM_CHANGE_STATUS:
                if (gBattleMons[battler].status1 & formChanges[i].param1)
                    targetSpecies = formChanges[i].targetSpecies;
                break;
            case FORM_CHANGE_BATTLE_TERASTALLIZATION:
                if (GetBattlerTeraType(battler) == formChanges[i].param1)
                    targetSpecies = formChanges[i].targetSpecies;
                break;
            case FORM_CHANGE_BATTLE_BEFORE_MOVE:
            case FORM_CHANGE_BATTLE_AFTER_MOVE:
                if (formChanges[i].param1 == gCurrentMove
                    && (formChanges[i].param2 == ABILITY_NONE || formChanges[i].param2 == GetBattlerAbility(battler)))
                    targetSpecies = formChanges[i].targetSpecies;
                break;
            case FORM_CHANGE_BATTLE_BEFORE_MOVE_CATEGORY:
                if (formChanges[i].param1 == GetBattleMoveCategory(gCurrentMove)
                    && (formChanges[i].param2 == ABILITY_NONE || formChanges[i].param2 == GetBattlerAbility(battler)))
                    targetSpecies = formChanges[i].targetSpecies;
                break;
            default:
                break;
            }
        }
    }

    return targetSpecies;
}

static bool32 CanBattlerFormChange(u32 battler, enum FormChanges method)
{
    // Can't change form if transformed.
    if (gBattleMons[battler].volatiles.transformed
        && B_TRANSFORM_FORM_CHANGES >= GEN_5)
        return FALSE;

    switch (method)
    {
    case FORM_CHANGE_END_BATTLE:
        if (IsBattlerPrimalReverted(battler))
            return TRUE;
        // Fallthrough
    case FORM_CHANGE_FAINT:
        if (IsBattlerMegaEvolved(battler) || IsBattlerUltraBursted(battler) || IsBattlerInTeraForm(battler) || IsGigantamaxed(battler))
            return TRUE;
        break;
    case FORM_CHANGE_BATTLE_SWITCH:
        if (IsGigantamaxed(battler))
            return TRUE;
        else if (GetActiveGimmick(battler) == GIMMICK_TERA && GetBattlerAbility(battler) == ABILITY_HUNGER_SWITCH)
            return FALSE;
        break;
    default:
        break;
    }
    return DoesSpeciesHaveFormChangeMethod(gBattleMons[battler].species, method);
}

bool32 TryRevertPartyMonFormChange(u32 partyIndex)
{
     bool32 changedForm = FALSE;

    // Appeared in battle and didn't faint
    if (gBattleStruct->partyState[B_SIDE_PLAYER][partyIndex].sentOut && GetMonData(&gPlayerParty[partyIndex], MON_DATA_HP, NULL) != 0)
        changedForm = TryFormChange(partyIndex, B_SIDE_PLAYER, FORM_CHANGE_END_BATTLE_ENVIRONMENT);

    if (!changedForm)
        changedForm = TryFormChange(partyIndex, B_SIDE_PLAYER, FORM_CHANGE_END_BATTLE);

    // Clear original species field
    gBattleStruct->partyState[B_SIDE_PLAYER][partyIndex].changedSpecies = SPECIES_NONE;

    return changedForm;
}

bool32 TryBattleFormChange(u32 battler, enum FormChanges method)
{
    u32 monId = gBattlerPartyIndexes[battler];
    struct Pokemon *party = GetBattlerParty(battler);
    u32 currentSpecies = GetMonData(&party[monId], MON_DATA_SPECIES);
    u32 targetSpecies;

    if (!CanBattlerFormChange(battler, method))
        return FALSE;

    targetSpecies = GetBattleFormChangeTargetSpecies(battler, method);
    if (targetSpecies == currentSpecies)
        targetSpecies = GetFormChangeTargetSpecies(&party[monId], method, 0);
    if (targetSpecies != currentSpecies && targetSpecies != SPECIES_NONE)
    {
        // Saves the original species on the first form change.

        if (GetBattlerPartyState(battler)->changedSpecies == SPECIES_NONE)
            GetBattlerPartyState(battler)->changedSpecies = gBattleMons[battler].species;

        TryToSetBattleFormChangeMoves(&party[monId], method);
        SetMonData(&party[monId], MON_DATA_SPECIES, &targetSpecies);
        gBattleMons[battler].species = targetSpecies;
        RecalcBattlerStats(battler, &party[monId], method == FORM_CHANGE_BATTLE_GIGANTAMAX);
        return TRUE;
    }
    else if (GetBattlerPartyState(battler)->changedSpecies != SPECIES_NONE)
    {
        bool32 restoreSpecies = FALSE;

        switch (method)
        {
        case FORM_CHANGE_END_BATTLE:
            restoreSpecies = TRUE;
            break;
        case FORM_CHANGE_FAINT:
            if (IsBattlerMegaEvolved(battler) || IsBattlerUltraBursted(battler) || IsBattlerInTeraForm(battler) || IsGigantamaxed(battler))
                restoreSpecies = TRUE;
            break;
        case FORM_CHANGE_BATTLE_SWITCH:
            if (IsGigantamaxed(battler))
                restoreSpecies = TRUE;
            break;
        default:
            break;
        }

        if (restoreSpecies)
        {
            enum Ability abilityForm = gBattleMons[battler].ability;
            // Reverts the original species
            TryToSetBattleFormChangeMoves(&party[monId], method);
            u32 changedSpecies = GetBattlerPartyState(battler)->changedSpecies;
            SetMonData(&party[monId], MON_DATA_SPECIES, &changedSpecies);
            RecalcBattlerStats(battler, &party[monId], method == FORM_CHANGE_BATTLE_GIGANTAMAX);
            // Battler data is not updated with regular form's ability, not doing so could cause wrong ability activation.
            if (method == FORM_CHANGE_FAINT)
                gBattleMons[battler].ability = abilityForm;
            return TRUE;
        }
    }

    return FALSE;
}

bool32 DoBattlersShareType(u32 battler1, u32 battler2)
{
    s32 i;
    enum Type types1[3], types2[3];
    GetBattlerTypes(battler1, FALSE, types1);
    GetBattlerTypes(battler2, FALSE, types2);

    if (types1[2] == TYPE_MYSTERY)
        types1[2] = types1[0];
    if (types2[2] == TYPE_MYSTERY)
        types2[2] = types2[0];

    for (i = 0; i < 3; i++)
    {
        if (types1[i] == types2[0] || types1[i] == types2[1] || types1[i] == types2[2])
            return TRUE;
    }

    return FALSE;
}

bool32 CanBattlerGetOrLoseItem(u32 battler, u16 itemId)
{
    u16 species = gBattleMons[battler].species;
    enum HoldEffect holdEffect = GetItemHoldEffect(itemId);

    if (ItemIsMail(itemId))
        return FALSE;
    else if (itemId == ITEM_ENIGMA_BERRY_E_READER)
        return FALSE;
    else if (DoesSpeciesUseHoldItemToChangeForm(species, itemId))
        return FALSE;
    else if (holdEffect == HOLD_EFFECT_Z_CRYSTAL)
        return FALSE;
    else if (holdEffect == HOLD_EFFECT_BOOSTER_ENERGY
         && (gSpeciesInfo[gBattleMons[battler].species].isParadox || gSpeciesInfo[gBattleMons[gBattlerTarget].species].isParadox))
        return FALSE;
    else
        return TRUE;
}

u32 GetBattlerVisualSpecies(u32 battler)
{
    u32 illusionSpecies = GetIllusionMonSpecies(battler);
    if (illusionSpecies != SPECIES_NONE)
        return illusionSpecies;
    return gBattleMons[battler].species;
}

bool32 TryClearIllusion(u32 battler, enum AbilityEffect caseID)
{
    if (gBattleStruct->illusion[battler].state != ILLUSION_ON)
        return FALSE;
    if (GetBattlerAbility(battler) == ABILITY_ILLUSION && IsBattlerAlive(battler))
        return FALSE;

    gBattleScripting.battler = battler;
    if (caseID == ABILITYEFFECT_ON_SWITCHIN)
        BattleScriptPushCursorAndCallback(BattleScript_IllusionOffEnd3);
    else
        BattleScriptCall(BattleScript_IllusionOff);
    return TRUE;
}

struct Pokemon *GetIllusionMonPtr(u32 battler)
{
    if (gBattleStruct->illusion[battler].state == ILLUSION_NOT_SET)
        SetIllusionMon(GetBattlerMon(battler), battler);
    if (gBattleStruct->illusion[battler].state != ILLUSION_ON)
        return NULL;

    return gBattleStruct->illusion[battler].mon;
}

void ClearIllusionMon(u32 battler)
{
    memset(&gBattleStruct->illusion[battler], 0, sizeof(gBattleStruct->illusion[battler]));
}

u32 GetIllusionMonSpecies(u32 battler)
{
    struct Pokemon *illusionMon = GetIllusionMonPtr(battler);
    if (illusionMon != NULL)
        return GetMonData(illusionMon, MON_DATA_SPECIES);
    return SPECIES_NONE;
}

u32 GetIllusionMonPartyId(struct Pokemon *party, struct Pokemon *mon, struct Pokemon *partnerMon, u32 battler)
{
    s32 partyEnd=6;
    s32 partyStart=0;

    // Adjust party search range for Multibattles and Player vs two-trainers
    if ((GetBattlerSide(battler) == B_SIDE_PLAYER && (gBattleTypeFlags & BATTLE_TYPE_MULTI))
        || (GetBattlerSide(battler) == B_SIDE_OPPONENT && (gBattleTypeFlags & BATTLE_TYPE_TWO_OPPONENTS)))
        {
            if ((GetBattlerPosition(battler) == B_POSITION_PLAYER_LEFT) || (GetBattlerPosition(battler) == B_POSITION_OPPONENT_LEFT))
            {
                partyEnd = 3;
                partyStart = 0;
            }
            else
            {
                partyEnd = 6;
                partyStart = 3;
            }
        }

    // Find last alive non-egg pokemon.
    for (s32 id = partyEnd - 1; id >= partyStart; id--)
    {
        if (GetMonData(&party[id], MON_DATA_SANITY_HAS_SPECIES)
            && GetMonData(&party[id], MON_DATA_HP)
            && !GetMonData(&party[id], MON_DATA_IS_EGG))
        {
            u32 species = GetMonData(&party[id], MON_DATA_SPECIES);
            if (species == SPECIES_TERAPAGOS_STELLAR || (species >= SPECIES_OGERPON_TEAL_TERA && species <= SPECIES_OGERPON_CORNERSTONE_TERA))
                continue;
            if (&party[id] != mon && &party[id] != partnerMon)
                return id;
            else // If this pokemon or its partner is last in the party, ignore Illusion.
                return PARTY_SIZE;
        }
    }
    return PARTY_SIZE;
}

bool32 SetIllusionMon(struct Pokemon *mon, u32 battler)
{
    struct Pokemon *party, *partnerMon;
    u32 id;

    gBattleStruct->illusion[battler].state = ILLUSION_OFF;
    if (GetMonAbility(mon) != ABILITY_ILLUSION)
        return FALSE;

    party = GetBattlerParty(battler);

    if (IsBattlerAlive(BATTLE_PARTNER(battler)))
        partnerMon = &party[gBattlerPartyIndexes[BATTLE_PARTNER(battler)]];
    else
        partnerMon = mon;

    id = GetIllusionMonPartyId(party, mon, partnerMon, battler);
    if (id != PARTY_SIZE)
    {
        gBattleStruct->illusion[battler].state = ILLUSION_ON;
        gBattleStruct->illusion[battler].mon = &party[id];
        return TRUE;
    }

    return FALSE;
}

u32 TryImmunityAbilityHealStatus(u32 battler, enum AbilityEffect caseID)
{
    u32 effect = 0;
    switch (GetBattlerAbilityIgnoreMoldBreaker(battler))
    {
    case ABILITY_IMMUNITY:
    case ABILITY_PASTEL_VEIL:
        if (gBattleMons[battler].status1 & (STATUS1_POISON | STATUS1_TOXIC_POISON | STATUS1_TOXIC_COUNTER))
        {
            StringCopy(gBattleTextBuff1, gStatusConditionString_PoisonJpn);
            effect = 1;
        }
        break;
    case ABILITY_OWN_TEMPO:
        if (gBattleMons[battler].volatiles.confusionTurns > 0)
        {
            StringCopy(gBattleTextBuff1, gStatusConditionString_ConfusionJpn);
            effect = 2;
        }
        break;
    case ABILITY_LIMBER:
        if (gBattleMons[battler].status1 & STATUS1_PARALYSIS)
        {
            StringCopy(gBattleTextBuff1, gStatusConditionString_ParalysisJpn);
            effect = 1;
        }
        break;
    case ABILITY_INSOMNIA:
    case ABILITY_VITAL_SPIRIT:
        if (gBattleMons[battler].status1 & STATUS1_SLEEP)
        {
            TryDeactivateSleepClause(GetBattlerSide(battler), gBattlerPartyIndexes[battler]);
            gBattleMons[battler].volatiles.nightmare = FALSE;
            StringCopy(gBattleTextBuff1, gStatusConditionString_SleepJpn);
            effect = 1;
        }
        break;
    case ABILITY_WATER_VEIL:
    case ABILITY_WATER_BUBBLE:
    case ABILITY_THERMAL_EXCHANGE:
        if (gBattleMons[battler].status1 & STATUS1_BURN)
        {
            StringCopy(gBattleTextBuff1, gStatusConditionString_BurnJpn);
            effect = 1;
        }
        break;
    case ABILITY_MAGMA_ARMOR:
        if (gBattleMons[battler].status1 & (STATUS1_FREEZE | STATUS1_FROSTBITE))
        {
            StringCopy(gBattleTextBuff1, gStatusConditionString_IceJpn);
            effect = 1;
        }
        break;
    case ABILITY_OBLIVIOUS:
        if (gBattleMons[battler].volatiles.infatuation)
            effect = 3;
        else if (GetGenConfig(GEN_CONFIG_OBLIVIOUS_TAUNT) >= GEN_6 && gDisableStructs[battler].tauntTimer != 0)
            effect = 4;
        break;
    }

    if (effect != 0)
    {
        switch (effect)
        {
        case 1: // status cleared
            gBattleMons[battler].status1 = 0;
            if (caseID == ABILITYEFFECT_ON_SWITCHIN_IMMUNITIES)
                BattleScriptExecute(BattleScript_AbilityCuredStatusEnd3);
            else
                BattleScriptCall(BattleScript_AbilityCuredStatus);
            break;
        case 2: // get rid of confusion
            RemoveConfusionStatus(battler);
            if (caseID == ABILITYEFFECT_ON_SWITCHIN_IMMUNITIES)
                BattleScriptExecute(BattleScript_AbilityCuredStatusEnd3);
            else
                BattleScriptCall(BattleScript_AbilityCuredStatus);
            break;
        case 3: // get rid of infatuation
            gBattleMons[battler].volatiles.infatuation = 0;
            if (caseID == ABILITYEFFECT_ON_SWITCHIN_IMMUNITIES)
                BattleScriptExecute(BattleScript_AbilityCuredStatusEnd3);
            else
                BattleScriptCall(BattleScript_AbilityCuredStatus);
            break;
        case 4: // get rid of taunt
            gDisableStructs[battler].tauntTimer = 0;
            if (caseID == ABILITYEFFECT_ON_SWITCHIN_IMMUNITIES)
                BattleScriptExecute(BattleScript_AbilityCuredStatusEnd3);
            else
                BattleScriptCall(BattleScript_AbilityCuredStatus);
            break;
        }

        gBattleScripting.battler = gBattlerAbility = battler;
        BtlController_EmitSetMonData(battler, B_COMM_TO_CONTROLLER, REQUEST_STATUS_BATTLE, 0, 4, &gBattleMons[battler].status1);
        MarkBattlerForControllerExec(battler);
        return effect;
    }

    return 0;
}

uq4_12_t GetBadgeBoostModifier(void)
{
    if (GetGenConfig(GEN_CONFIG_BADGE_BOOST) < GEN_3)
        return UQ_4_12(1.125);
    else
        return UQ_4_12(1.1);
}

bool32 ShouldGetStatBadgeBoost(u16 badgeFlag, u32 battler)
{
    if (GetGenConfig(GEN_CONFIG_BADGE_BOOST) <= GEN_3 && badgeFlag != 0)
    {
        if (gBattleTypeFlags & (BATTLE_TYPE_LINK | BATTLE_TYPE_EREADER_TRAINER | BATTLE_TYPE_RECORDED_LINK | BATTLE_TYPE_FRONTIER))
            return FALSE;
        else if (!IsOnPlayerSide(battler))
            return FALSE;
        else if (gBattleTypeFlags & BATTLE_TYPE_TRAINER && TRAINER_BATTLE_PARAM.opponentA == TRAINER_SECRET_BASE)
            return FALSE;
        else if (FlagGet(badgeFlag))
            return TRUE;
    }
    return FALSE;
}

static enum DamageCategory SwapMoveDamageCategory(u32 move)
{
    if (GetMoveCategory(move) == DAMAGE_CATEGORY_PHYSICAL)
        return DAMAGE_CATEGORY_SPECIAL;
    return DAMAGE_CATEGORY_PHYSICAL;
}

/*
    The Global States gBattleStruct->categoryOverride and gBattleStruct->swapDamageCategory
    can be removed but a lot of function arguments (battlerAtk and battlerDef) have to be added for this, about 50+.
    This is potentially a good change because it is less likely to cause bugs in the future.
*/
enum DamageCategory GetBattleMoveCategory(u32 move)
{
    if (gMain.inBattle)
    {
        if (gBattleStruct->swapDamageCategory) // Photon Geyser, Shell Side Arm, Light That Burns the Sky, Tera Blast
            return SwapMoveDamageCategory(move);
        if (IsZMove(move) || IsMaxMove(move)) // TODO: Might be buggy depending on when this is called.
            return gBattleStruct->categoryOverride;
        if (IsBattleMoveStatus(move))
            return DAMAGE_CATEGORY_STATUS;
    }

    if (B_PHYSICAL_SPECIAL_SPLIT <= GEN_4)
        return gTypesInfo[GetBattleMoveType(move)].damageCategory;

    return GetMoveCategory(move);
}

void SetDynamicMoveCategory(u32 battlerAtk, u32 battlerDef, u32 move)
{
    switch (GetMoveEffect(move))
    {
    case EFFECT_PHOTON_GEYSER:
        gBattleStruct->swapDamageCategory = (GetCategoryBasedOnStats(battlerAtk) == DAMAGE_CATEGORY_PHYSICAL);
        break;
    case EFFECT_SHELL_SIDE_ARM:
        if (gBattleStruct->shellSideArmCategory[battlerAtk][battlerDef] == DAMAGE_CATEGORY_PHYSICAL)
            gBattleStruct->swapDamageCategory = TRUE;
        break;
    case EFFECT_TERA_BLAST:
        if (GetActiveGimmick(battlerAtk) == GIMMICK_TERA)
            gBattleStruct->swapDamageCategory = GetCategoryBasedOnStats(battlerAtk) == DAMAGE_CATEGORY_PHYSICAL;
        break;
    case EFFECT_TERA_STARSTORM:
        if (GetActiveGimmick(battlerAtk) == GIMMICK_TERA && GET_BASE_SPECIES_ID(GetMonData(GetBattlerMon(battlerAtk), MON_DATA_SPECIES)) == SPECIES_TERAPAGOS)
            gBattleStruct->swapDamageCategory = GetCategoryBasedOnStats(battlerAtk) == DAMAGE_CATEGORY_PHYSICAL;
        break;
    default:
        gBattleStruct->swapDamageCategory = FALSE;
        break;
    }
}

static bool32 TryRemoveScreens(u32 battler)
{
    bool32 removed = FALSE;
    u32 battlerSide = GetBattlerSide(battler);
    u8 enemySide = GetBattlerSide(BATTLE_OPPOSITE(battler));

    // try to remove from battler's side
    if (gSideStatuses[battlerSide] & SIDE_STATUS_SCREEN_ANY)
    {
        gSideStatuses[battlerSide] &= ~SIDE_STATUS_SCREEN_ANY;
        removed = TRUE;
    }

    // try to remove from battler opponent's side
    if (gSideStatuses[enemySide] & SIDE_STATUS_SCREEN_ANY)
    {
        gSideStatuses[enemySide] &= ~SIDE_STATUS_SCREEN_ANY;
        removed = TRUE;
    }

    return removed;
}

// Photon Geyser, Light That Burns the Sky, Tera Blast
enum DamageCategory GetCategoryBasedOnStats(u32 battler)
{
    u32 attack = gBattleMons[battler].attack;
    u32 spAttack = gBattleMons[battler].spAttack;

    attack = attack * gStatStageRatios[gBattleMons[battler].statStages[STAT_ATK]][0];
    attack = attack / gStatStageRatios[gBattleMons[battler].statStages[STAT_ATK]][1];

    spAttack = spAttack * gStatStageRatios[gBattleMons[battler].statStages[STAT_SPATK]][0];
    spAttack = spAttack / gStatStageRatios[gBattleMons[battler].statStages[STAT_SPATK]][1];

    if (spAttack >= attack)
        return DAMAGE_CATEGORY_SPECIAL;
    else
        return DAMAGE_CATEGORY_PHYSICAL;
}

static u32 GetFlingPowerFromItemId(u32 itemId)
{
    if (gItemsInfo[itemId].pocket == POCKET_TM_HM)
    {
        u32 power = GetMovePower(ItemIdToBattleMoveId(itemId));
        if (power > 1)
            return power;
        return 10; // Status moves and moves with variable power always return 10 power.
    }
    else
        return GetItemFlingPower(itemId);
}

bool32 CanFling(u32 battler)
{
    u16 item = gBattleMons[battler].item;

    if (item == ITEM_NONE
      || (B_KLUTZ_FLING_INTERACTION >= GEN_5 && GetBattlerAbility(battler) == ABILITY_KLUTZ)
      || gFieldStatuses & STATUS_FIELD_MAGIC_ROOM
      || gBattleMons[battler].volatiles.embargo
      || GetFlingPowerFromItemId(item) == 0
      || !CanBattlerGetOrLoseItem(battler, item))
        return FALSE;

    return TRUE;
}

// Sort an array of battlers by speed
// Useful for effects like pickpocket, eject button, red card, dancer
void SortBattlersBySpeed(u8 *battlers, bool32 slowToFast)
{
    int i, j, currSpeed, currBattler;
    u16 speeds[MAX_BATTLERS_COUNT] = {0};

    for (i = 0; i < gBattlersCount; i++)
    {
        u32 battler = battlers[i];
        speeds[i] = GetBattlerTotalSpeedStat(battler, GetBattlerAbility(battler), GetBattlerHoldEffect(battler));
    }

    for (i = 1; i < gBattlersCount; i++)
    {
        currBattler = battlers[i];
        currSpeed = speeds[i];
        j = i - 1;

        if (slowToFast)
        {
            while (j >= 0 && speeds[j] > currSpeed)
            {
                battlers[j + 1] = battlers[j];
                speeds[j + 1] = speeds[j];
                j = j - 1;
            }
        }
        else
        {
            while (j >= 0 && speeds[j] < currSpeed)
            {
                battlers[j + 1] = battlers[j];
                speeds[j + 1] = speeds[j];
                j = j - 1;
            }
        }

        battlers[j + 1] = currBattler;
        speeds[j + 1] = currSpeed;
    }
}

void TryRestoreHeldItems(void)
{
    u32 i;
    bool32 returnNPCItems = B_RETURN_STOLEN_NPC_ITEMS >= GEN_5 && gBattleTypeFlags & BATTLE_TYPE_TRAINER;

    for (i = 0; i < PARTY_SIZE; i++)
    {
        // Check if held items should be restored after battle based on generation
        if (B_RESTORE_HELD_BATTLE_ITEMS >= GEN_9 || gBattleStruct->itemLost[B_SIDE_PLAYER][i].stolen || returnNPCItems)
        {
            u16 lostItem = gBattleStruct->itemLost[B_SIDE_PLAYER][i].originalItem;

            // Check if the lost item is a berry and the mon is not holding it
            if (GetItemPocket(lostItem) == POCKET_BERRIES && GetMonData(&gPlayerParty[i], MON_DATA_HELD_ITEM) != lostItem)
                lostItem = ITEM_NONE;

            // Check if the lost item should be restored
            if ((lostItem != ITEM_NONE || returnNPCItems) && GetItemPocket(lostItem) != POCKET_BERRIES)
                SetMonData(&gPlayerParty[i], MON_DATA_HELD_ITEM, &lostItem);
        }
    }
}

bool32 CanStealItem(u32 battlerStealing, u32 battlerItem, u16 item)
{
    enum BattleSide stealerSide = GetBattlerSide(battlerStealing);

    if (gBattleTypeFlags & BATTLE_TYPE_TRAINER_HILL)
        return FALSE;

    // Check if the battler trying to steal should be able to
    if (stealerSide == B_SIDE_OPPONENT
        && !(gBattleTypeFlags &
             (BATTLE_TYPE_EREADER_TRAINER
              | BATTLE_TYPE_FRONTIER
              | BATTLE_TYPE_LINK
              | BATTLE_TYPE_RECORDED_LINK
              | BATTLE_TYPE_SECRET_BASE
              | (B_TRAINERS_KNOCK_OFF_ITEMS == TRUE ? BATTLE_TYPE_TRAINER : 0)
              )))
    {
        return FALSE;
    }
    else if (!(gBattleTypeFlags &
          (BATTLE_TYPE_EREADER_TRAINER
           | BATTLE_TYPE_FRONTIER
           | BATTLE_TYPE_LINK
           | BATTLE_TYPE_RECORDED_LINK
           | BATTLE_TYPE_SECRET_BASE))
        && (gWishFutureKnock.knockedOffMons[stealerSide] & (1u << gBattlerPartyIndexes[battlerStealing])))
    {
        return FALSE;
    }

    // It's supposed to pop before trying to steal but this also works
    if (GetItemHoldEffect(item) == HOLD_EFFECT_AIR_BALLOON)
        return FALSE;

    if (!CanBattlerGetOrLoseItem(battlerItem, item)      // Battler with item cannot have it stolen
     || !CanBattlerGetOrLoseItem(battlerStealing, item)) // Stealer cannot take the item
        return FALSE;

    return TRUE;
}

void TrySaveExchangedItem(u32 battler, u16 stolenItem)
{
    // Because BtlController_EmitSetMonData does SetMonData, we need to save the stolen item only if it matches the battler's original
    // So, if the player steals an item during battle and has it stolen from it, it will not end the battle with it (naturally)
    if (B_TRAINERS_KNOCK_OFF_ITEMS == FALSE)
        return;
    // If regular trainer battle and mon's original item matches what is being stolen, save it to be restored at end of battle
    if (gBattleTypeFlags & BATTLE_TYPE_TRAINER
      && !(gBattleTypeFlags & BATTLE_TYPE_FRONTIER)
      && IsOnPlayerSide(battler)
      && stolenItem == gBattleStruct->itemLost[B_SIDE_PLAYER][gBattlerPartyIndexes[battler]].originalItem)
        gBattleStruct->itemLost[B_SIDE_PLAYER][gBattlerPartyIndexes[battler]].stolen = TRUE;
}

bool32 IsBattlerAffectedByHazards(u32 battler, bool32 toxicSpikes)
{
    bool32 ret = TRUE;
    enum HoldEffect holdEffect = GetBattlerHoldEffect(battler);
    if (toxicSpikes && holdEffect == HOLD_EFFECT_HEAVY_DUTY_BOOTS && !IS_BATTLER_OF_TYPE(battler, TYPE_POISON))
    {
        ret = FALSE;
        RecordItemEffectBattle(battler, holdEffect);
    }
    else if (holdEffect == HOLD_EFFECT_HEAVY_DUTY_BOOTS)
    {
        ret = FALSE;
        RecordItemEffectBattle(battler, holdEffect);
    }
    return ret;
}

bool32 TestIfSheerForceAffected(u32 battler, u16 move)
{
    return GetBattlerAbility(battler) == ABILITY_SHEER_FORCE && MoveIsAffectedBySheerForce(move);
}

// This function is the body of "jumpifstat", but can be used dynamically in a function
bool32 CompareStat(u32 battler, enum Stat statId, u8 cmpTo, u8 cmpKind, enum Ability ability)
{
    bool32 ret = FALSE;
    u8 statValue = gBattleMons[battler].statStages[statId];

    // Because this command is used as a way of checking if a stat can be lowered/raised,
    // we need to do some modification at run-time.
    if (ability == ABILITY_CONTRARY)
    {
        if (cmpKind == CMP_GREATER_THAN)
            cmpKind = CMP_LESS_THAN;
        else if (cmpKind == CMP_LESS_THAN)
            cmpKind = CMP_GREATER_THAN;

        if (cmpTo == MIN_STAT_STAGE)
            cmpTo = MAX_STAT_STAGE;
        else if (cmpTo == MAX_STAT_STAGE)
            cmpTo = MIN_STAT_STAGE;
    }

    switch (cmpKind)
    {
    case CMP_EQUAL:
        if (statValue == cmpTo)
            ret = TRUE;
        break;
    case CMP_NOT_EQUAL:
        if (statValue != cmpTo)
            ret = TRUE;
        break;
    case CMP_GREATER_THAN:
        if (statValue > cmpTo)
            ret = TRUE;
        break;
    case CMP_LESS_THAN:
        if (statValue < cmpTo)
            ret = TRUE;
        break;
    case CMP_COMMON_BITS:
        if (statValue & cmpTo)
            ret = TRUE;
        break;
    case CMP_NO_COMMON_BITS:
        if (!(statValue & cmpTo))
            ret = TRUE;
        break;
    }

    return ret;
}

bool32 BlocksPrankster(u16 move, u32 battlerPrankster, u32 battlerDef, bool32 checkTarget)
{
    if (GetGenConfig(GEN_CONFIG_PRANKSTER_DARK_TYPES) < GEN_7)
        return FALSE;
    if (!gProtectStructs[battlerPrankster].pranksterElevated)
        return FALSE;
    if (IsBattlerAlly(battlerPrankster, battlerDef))
        return FALSE;
    if (checkTarget && (GetBattlerMoveTargetType(battlerPrankster, move) & (MOVE_TARGET_OPPONENTS_FIELD | MOVE_TARGET_DEPENDS)))
        return FALSE;
    if (!IS_BATTLER_OF_TYPE(battlerDef, TYPE_DARK))
        return FALSE;
    if (IsSemiInvulnerable(battlerDef, CHECK_ALL))
        return FALSE;

    return TRUE;
}

bool32 CantPickupItem(u32 battler)
{
    // Used by RandomUniformExcept() for RNG_PICKUP
    if (battler == gBattlerAttacker && (GetGenConfig(GEN_PICKUP_WILD) < GEN_9 || gBattleTypeFlags & (BATTLE_TYPE_TRAINER | BATTLE_TYPE_LINK)))
        return TRUE;
    return !(IsBattlerAlive(battler) && GetBattlerPartyState(battler)->usedHeldItem && gBattleStruct->battlerState[battler].canPickupItem);
}

bool32 PickupHasValidTarget(u32 battler)
{
    u32 i;
    for (i = 0; i < gBattlersCount; i++)
    {
        if (!CantPickupItem(i))
            return TRUE;
    }
    return FALSE;
}

bool32 IsBattlerWeatherAffected(u32 battler, u32 weatherFlags)
{
    if (gBattleWeather & weatherFlags && HasWeatherEffect())
    {
        // given weather is active -> check if its sun, rain against utility umbrella (since only 1 weather can be active at once)
        if (gBattleWeather & (B_WEATHER_SUN | B_WEATHER_RAIN) && GetBattlerHoldEffect(battler) == HOLD_EFFECT_UTILITY_UMBRELLA)
            return FALSE; // utility umbrella blocks sun, rain effects

        return TRUE;
    }
    return FALSE;
}

// Gets move target before redirection effects etc. are applied
// Possible return values are defined in battle.h following MOVE_TARGET_SELECTED
// TODO: Add args: ability and hold effect
u32 GetBattlerMoveTargetType(u32 battler, u32 move)
{
    enum BattleMoveEffects effect = GetMoveEffect(move);
    if (effect == EFFECT_CURSE && !IS_BATTLER_OF_TYPE(battler, TYPE_GHOST))
        return MOVE_TARGET_USER;
    if (effect == EFFECT_EXPANDING_FORCE && IsBattlerTerrainAffected(battler, GetBattlerAbility(battler), GetBattlerHoldEffect(battler), STATUS_FIELD_PSYCHIC_TERRAIN))
        return MOVE_TARGET_BOTH;
    if (effect == EFFECT_TERA_STARSTORM && gBattleMons[battler].species == SPECIES_TERAPAGOS_STELLAR)
        return MOVE_TARGET_BOTH;

    return GetMoveTarget(move);
}

bool32 CanTargetBattler(u32 battlerAtk, u32 battlerDef, u16 move)
{
    if (GetMoveEffect(move) == EFFECT_HIT_ENEMY_HEAL_ALLY
    &&  IsBattlerAlly(battlerAtk, battlerDef)
    &&  gBattleMons[battlerAtk].volatiles.healBlock)
        return FALSE;   // Pokémon affected by Heal Block cannot target allies with Pollen Puff
    if (IsBattlerAlly(battlerAtk, battlerDef) && (GetActiveGimmick(battlerAtk) == GIMMICK_DYNAMAX
                                               || IsGimmickSelected(battlerAtk, GIMMICK_DYNAMAX)))
        return FALSE;

    return TRUE;
}

static void SetRandomMultiHitCounter()
{
    if (GetBattlerHoldEffect(gBattlerAttacker) == HOLD_EFFECT_LOADED_DICE)
        gMultiHitCounter = RandomUniform(RNG_LOADED_DICE, 4, 5);
    else if (GetGenConfig(GEN_CONFIG_MULTI_HIT_CHANCE) >= GEN_5)
        gMultiHitCounter = RandomWeighted(RNG_HITS, 0, 0, 7, 7, 3, 3); // 35%: 2 hits, 35%: 3 hits, 15% 4 hits, 15% 5 hits.
    else
        gMultiHitCounter = RandomWeighted(RNG_HITS, 0, 0, 3, 3, 1, 1); // 37.5%: 2 hits, 37.5%: 3 hits, 12.5% 4 hits, 12.5% 5 hits.
}

void CopyMonLevelAndBaseStatsToBattleMon(u32 battler, struct Pokemon *mon)
{
    gBattleMons[battler].level = GetMonData(mon, MON_DATA_LEVEL);
    gBattleMons[battler].hp = GetMonData(mon, MON_DATA_HP);
    gBattleMons[battler].maxHP = GetMonData(mon, MON_DATA_MAX_HP);
    gBattleMons[battler].attack = GetMonData(mon, MON_DATA_ATK);
    gBattleMons[battler].defense = GetMonData(mon, MON_DATA_DEF);
    gBattleMons[battler].speed = GetMonData(mon, MON_DATA_SPEED);
    gBattleMons[battler].spAttack = GetMonData(mon, MON_DATA_SPATK);
    gBattleMons[battler].spDefense = GetMonData(mon, MON_DATA_SPDEF);
}

void CopyMonAbilityAndTypesToBattleMon(u32 battler, struct Pokemon *mon)
{
    gBattleMons[battler].ability = GetMonAbility(mon);
    gBattleMons[battler].types[0] = GetSpeciesType(gBattleMons[battler].species, 0);
    gBattleMons[battler].types[1] = GetSpeciesType(gBattleMons[battler].species, 1);
    gBattleMons[battler].types[2] = TYPE_MYSTERY;
}

void RecalcBattlerStats(u32 battler, struct Pokemon *mon, bool32 isDynamaxing)
{
    u32 hp = GetMonData(mon, MON_DATA_HP);
    u32 oldMaxHp = GetMonData(mon, MON_DATA_MAX_HP);
    CalculateMonStats(mon);
    if (GetActiveGimmick(battler) == GIMMICK_DYNAMAX && gChosenActionByBattler[battler] != B_ACTION_SWITCH)
    {
        ApplyDynamaxHPMultiplier(mon);
        u32 newMaxHp = GetMonData(mon, MON_DATA_MAX_HP);
        if (!isDynamaxing)
        {
            if (newMaxHp > oldMaxHp) // restore hp gained from changing form, without this, dynamaxed form changes are calculated incorrectly
            {
                hp += (newMaxHp - oldMaxHp);
                SetMonData(mon, MON_DATA_HP, &hp);
            }
            else
            {
                SetMonData(mon, MON_DATA_HP, &hp);
            }
        }
    }
    CopyMonLevelAndBaseStatsToBattleMon(battler, mon);
    CopyMonAbilityAndTypesToBattleMon(battler, mon);
}

void RemoveConfusionStatus(u32 battler)
{
    gBattleMons[battler].volatiles.confusionTurns = 0;
    gBattleMons[battler].volatiles.infiniteConfusion = FALSE;
}

u8 GetBattlerGender(u32 battler)
{
    return GetGenderFromSpeciesAndPersonality(gBattleMons[battler].species,
                                              gBattleMons[battler].personality);
}

bool32 AreBattlersOfOppositeGender(u32 battler1, u32 battler2)
{
    u8 gender1 = GetBattlerGender(battler1);
    u8 gender2 = GetBattlerGender(battler2);

    return (gender1 != MON_GENDERLESS && gender2 != MON_GENDERLESS && gender1 != gender2);
}

bool32 AreBattlersOfSameGender(u32 battler1, u32 battler2)
{
    u8 gender1 = GetBattlerGender(battler1);
    u8 gender2 = GetBattlerGender(battler2);

    return (gender1 != MON_GENDERLESS && gender2 != MON_GENDERLESS && gender1 == gender2);
}

u32 CalcSecondaryEffectChance(u32 battler, enum Ability battlerAbility, const struct AdditionalEffect *additionalEffect)
{
    bool8 hasSereneGrace = (battlerAbility == ABILITY_SERENE_GRACE);
    bool8 hasRainbow = (gSideStatuses[GetBattlerSide(battler)] & SIDE_STATUS_RAINBOW) != 0;
    u16 secondaryEffectChance = additionalEffect->chance;

    if (hasRainbow && hasSereneGrace && additionalEffect->moveEffect == MOVE_EFFECT_FLINCH)
        return secondaryEffectChance * 2;

    if (hasSereneGrace)
        secondaryEffectChance *= 2;
    if (hasRainbow && additionalEffect->moveEffect != MOVE_EFFECT_SECRET_POWER)
        secondaryEffectChance *= 2;

    return secondaryEffectChance;
}

bool32 MoveEffectIsGuaranteed(u32 battler, enum Ability battlerAbility, const struct AdditionalEffect *additionalEffect)
{
    return additionalEffect->chance == 0 || CalcSecondaryEffectChance(battler, battlerAbility, additionalEffect) >= 100;
}

bool32 IsGen6ExpShareEnabled(void)
{
    if (I_EXP_SHARE_FLAG <= TEMP_FLAGS_END)
        return FALSE;

    return FlagGet(I_EXP_SHARE_FLAG);
}


bool32 MoveHasAdditionalEffect(u32 move, u32 moveEffect)
{
    u32 i;
    u32 numAdditionalEffects = GetMoveAdditionalEffectCount(move);
    for (i = 0; i < numAdditionalEffects; i++)
    {
        const struct AdditionalEffect *additionalEffect = GetMoveAdditionalEffectById(move, i);
        if (additionalEffect->moveEffect == moveEffect && additionalEffect->self == FALSE)
            return TRUE;
    }
    return FALSE;
}

bool32 MoveHasAdditionalEffectWithChance(u32 move, u32 moveEffect, u32 chance)
{
    u32 i;
    u32 numAdditionalEffects = GetMoveAdditionalEffectCount(move);
    for (i = 0; i < numAdditionalEffects; i++)
    {
        const struct AdditionalEffect *additionalEffect = GetMoveAdditionalEffectById(move, i);
        if (additionalEffect->moveEffect == moveEffect && additionalEffect->chance == chance)
            return TRUE;
    }
    return FALSE;
}

bool32 MoveHasAdditionalEffectSelf(u32 move, u32 moveEffect)
{
    u32 i;
    u32 numAdditionalEffects = GetMoveAdditionalEffectCount(move);
    for (i = 0; i < numAdditionalEffects; i++)
    {
        const struct AdditionalEffect *additionalEffect = GetMoveAdditionalEffectById(move, i);
        if (additionalEffect->moveEffect == moveEffect && additionalEffect->self == TRUE)
            return TRUE;
    }
    return FALSE;
}

bool32 IsMoveEffectRemoveSpeciesType(u32 move, u32 moveEffect, u32 argument)
{
    return (GetMoveArgType(move) == argument) && MoveHasAdditionalEffectSelf(move, moveEffect);
}

bool32 MoveHasChargeTurnAdditionalEffect(u32 move)
{
    u32 i;
    u32 numAdditionalEffects = GetMoveAdditionalEffectCount(move);
    for (i = 0; i < numAdditionalEffects; i++)
    {
        if (GetMoveAdditionalEffectById(move, i)->onChargeTurnOnly)
            return TRUE;
    }
    return FALSE;
}

bool32 MoveIsAffectedBySheerForce(u32 move)
{
    u32 i;
    u32 numAdditionalEffects = GetMoveAdditionalEffectCount(move);
    for (i = 0; i < numAdditionalEffects; i++)
    {
        const struct AdditionalEffect *additionalEffect = GetMoveAdditionalEffectById(move, i);
        if ((additionalEffect->chance > 0) != additionalEffect->sheerForceOverride)
            return TRUE;
    }
    return FALSE;
}

bool8 CanMonParticipateInSkyBattle(struct Pokemon *mon)
{
    u16 species = GetMonData(mon, MON_DATA_SPECIES);
    u16 monAbilityNum = GetMonData(mon, MON_DATA_ABILITY_NUM, NULL);

    bool8 hasLevitateAbility = GetSpeciesAbility(species, monAbilityNum) == ABILITY_LEVITATE;
    bool8 isFlyingType = GetSpeciesType(species, 0) == TYPE_FLYING || GetSpeciesType(species, 1) == TYPE_FLYING;
    bool8 monIsValidAndNotEgg = GetMonData(mon, MON_DATA_SANITY_HAS_SPECIES) && !GetMonData(mon, MON_DATA_IS_EGG);

    if (monIsValidAndNotEgg)
    {
        if ((hasLevitateAbility || isFlyingType) && !IsMonBannedFromSkyBattles(species))
            return TRUE;
    }
    return FALSE;
}

bool8 IsMonBannedFromSkyBattles(u16 species)
{
    switch (species)
    {
#if B_SKY_BATTLE_STRICT_ELIGIBILITY == TRUE
        case SPECIES_SPEAROW:
        case SPECIES_FARFETCHD:
        case SPECIES_DODUO:
        case SPECIES_DODRIO:
        case SPECIES_HOOTHOOT:
        case SPECIES_NATU:
        case SPECIES_MURKROW:
        case SPECIES_DELIBIRD:
        case SPECIES_TAILLOW:
        case SPECIES_STARLY:
        case SPECIES_CHATOT:
        case SPECIES_SHAYMIN:
        case SPECIES_PIDOVE:
        case SPECIES_ARCHEN:
        case SPECIES_DUCKLETT:
        case SPECIES_RUFFLET:
        case SPECIES_VULLABY:
        case SPECIES_FLETCHLING:
        case SPECIES_HAWLUCHA:
        case SPECIES_ROWLET:
        case SPECIES_PIKIPEK:
#endif
        case SPECIES_EGG:
            return TRUE;
        default:
            return FALSE;
    }
}

void GetBattlerTypes(u32 battler, bool32 ignoreTera, enum Type types[static 3])
{
    // Terastallization.
    bool32 isTera = GetActiveGimmick(battler) == GIMMICK_TERA;
    if (!ignoreTera && isTera)
    {
        enum Type teraType = GetBattlerTeraType(battler);
        if (teraType != TYPE_STELLAR)
        {
            types[0] = types[1] = types[2] = teraType;
            return;
        }
    }

    types[0] = gBattleMons[battler].types[0];
    types[1] = gBattleMons[battler].types[1];
    types[2] = gBattleMons[battler].types[2];

    // Roost.
    if (!isTera && gDisableStructs[battler].roostActive)
    {
        if (types[0] == TYPE_FLYING && types[1] == TYPE_FLYING)
            types[0] = types[1] = B_ROOST_PURE_FLYING >= GEN_5 ? TYPE_NORMAL : TYPE_MYSTERY;
        else if (types[0] == TYPE_FLYING)
            types[0] = TYPE_MYSTERY;
        else if (types[1] == TYPE_FLYING)
            types[1] = TYPE_MYSTERY;
    }
}

enum Type GetBattlerType(u32 battler, u32 typeIndex, bool32 ignoreTera)
{
    enum Type types[3];
    GetBattlerTypes(battler, ignoreTera, types);
    return types[typeIndex];
}

void RemoveBattlerType(u32 battler, enum Type type)
{
    u32 i;
    if (GetActiveGimmick(battler) == GIMMICK_TERA) // don't remove type if Terastallized
        return;
    for (i = 0; i < 3; i++)
    {
        if (*(u8 *)(&gBattleMons[battler].types[0] + i) == type)
            *(u8 *)(&gBattleMons[battler].types[0] + i) = TYPE_MYSTERY;
    }
}

void SetShellSideArmCategory(void)
{
    u32 battlerAtk, battlerDef;
    u32 attackerAtkStat;
    u32 targetDefStat;
    u32 attackerSpAtkStat;
    u32 targetSpDefStat;
    u8 statStage;
    u32 physical;
    u32 special;
    u32 power = GetMovePower(MOVE_SHELL_SIDE_ARM);

    // Don't run this check for Safari Battles. Because player's stats are zeroed out, this performs division by zero which previously would crash on certain emulators in Safari Zone.
    if (gBattleTypeFlags & BATTLE_TYPE_SAFARI)
        return;

    for (battlerAtk = 0; battlerAtk < gBattlersCount; battlerAtk++)
    {
        attackerAtkStat = gBattleMons[battlerAtk].attack;
        statStage = gBattleMons[battlerAtk].statStages[STAT_ATK];
        attackerAtkStat *= gStatStageRatios[statStage][0];
        attackerAtkStat /= gStatStageRatios[statStage][1];

        attackerSpAtkStat = gBattleMons[battlerAtk].spAttack;
        statStage = gBattleMons[battlerAtk].statStages[STAT_SPATK];
        attackerSpAtkStat *= gStatStageRatios[statStage][0];
        attackerSpAtkStat /= gStatStageRatios[statStage][1];

        for (battlerDef = 0; battlerDef < gBattlersCount; battlerDef++)
        {
            if (battlerAtk == battlerDef)
                continue;

            targetDefStat = gBattleMons[battlerDef].defense;
            statStage = gBattleMons[battlerDef].statStages[STAT_DEF];
            targetDefStat *= gStatStageRatios[statStage][0];
            targetDefStat /= gStatStageRatios[statStage][1];
            if (targetDefStat == 0)
                targetDefStat = 1;

            physical = ((((2 * gBattleMons[battlerAtk].level / 5 + 2) * power * attackerAtkStat) / targetDefStat) / 50);

            targetSpDefStat = gBattleMons[battlerDef].spDefense;
            statStage = gBattleMons[battlerDef].statStages[STAT_SPDEF];
            targetSpDefStat *= gStatStageRatios[statStage][0];
            targetSpDefStat /= gStatStageRatios[statStage][1];
            if (targetSpDefStat == 0)
                targetSpDefStat = 1;

            special = ((((2 * gBattleMons[battlerAtk].level / 5 + 2) * power * attackerSpAtkStat) / targetSpDefStat) / 50);

            if ((physical > special) || (physical == special && RandomPercentage(RNG_SHELL_SIDE_ARM, 50)))
                gBattleStruct->shellSideArmCategory[battlerAtk][battlerDef] = DAMAGE_CATEGORY_PHYSICAL;
            else
                gBattleStruct->shellSideArmCategory[battlerAtk][battlerDef] = DAMAGE_CATEGORY_SPECIAL;
        }
    }
}

bool32 CanTargetPartner(u32 battlerAtk, u32 battlerDef)
{
    return (IsDoubleBattle()
         && IsBattlerAlive(BATTLE_PARTNER(battlerDef))
         && battlerDef != BATTLE_PARTNER(battlerAtk));
}

static inline bool32 DoesBattlerHaveAbilityImmunity(u32 battlerAtk, u32 battlerDef, enum Type moveType)
{
    enum Ability abilityDef = GetBattlerAbility(battlerDef);

    return CanAbilityBlockMove(battlerAtk, battlerDef, GetBattlerAbility(battlerAtk), abilityDef, gCurrentMove, CHECK_TRIGGER)
        || CanAbilityAbsorbMove(battlerAtk, battlerDef, abilityDef, gCurrentMove, moveType, CHECK_TRIGGER);
}

bool32 TargetFullyImmuneToCurrMove(u32 battlerAtk, u32 battlerDef)
{
    enum Type moveType = GetBattleMoveType(gCurrentMove);
    return ((CalcTypeEffectivenessMultiplierHelper(gCurrentMove, moveType, battlerAtk, battlerDef, GetBattlerAbility(battlerAtk), GetBattlerAbility(battlerDef), FALSE) == UQ_4_12(0.0))
         || IsBattlerProtected(battlerAtk, battlerDef, gCurrentMove)
         || !BreaksThroughSemiInvulnerablity(battlerDef, gCurrentMove)
         || DoesBattlerHaveAbilityImmunity(battlerAtk, battlerDef, moveType));
}

enum Type GetBattleMoveType(u32 move)
{
    if (gMain.inBattle && gBattleStruct->dynamicMoveType)
        return gBattleStruct->dynamicMoveType & DYNAMIC_TYPE_MASK;
    else if (B_UPDATED_MOVE_TYPES < GEN_5
         && (move == MOVE_BEAT_UP
          || move == MOVE_FUTURE_SIGHT
          || move == MOVE_DOOM_DESIRE))
          return TYPE_MYSTERY;
    return GetMoveType(move);
}

void TryActivateSleepClause(u32 battler, u32 indexInParty)
{
    if (gBattleStruct->battlerState[battler].sleepClauseEffectExempt)
    {
        gBattleStruct->battlerState[battler].sleepClauseEffectExempt = FALSE;
        return;
    }

    if (IsSleepClauseEnabled())
        gBattleStruct->monCausingSleepClause[GetBattlerSide(battler)] = indexInParty;
}

void TryDeactivateSleepClause(u32 battlerSide, u32 indexInParty)
{
    // If the pokemon on the given side at the given index in the party is the one causing Sleep Clause to be active,
    // set monCausingSleepClause[battlerSide] = PARTY_SIZE, which means Sleep Clause is not active for the given side
    if (IsSleepClauseEnabled() && gBattleStruct->monCausingSleepClause[battlerSide] == indexInParty)
        gBattleStruct->monCausingSleepClause[battlerSide] = PARTY_SIZE;
}

bool32 IsSleepClauseActiveForSide(u32 battlerSide)
{
    // If monCausingSleepClause[battlerSide] == PARTY_SIZE, Sleep Clause is not active for the given side.
    // If monCausingSleepClause[battlerSide] < PARTY_SIZE, it means it is storing the index of the mon that is causing Sleep Clause to be active,
    // from which it follows that Sleep Clause is active.
    return (IsSleepClauseEnabled() && (gBattleStruct->monCausingSleepClause[battlerSide] < PARTY_SIZE));
}

bool32 IsSleepClauseEnabled()
{
    if (B_SLEEP_CLAUSE)
        return TRUE;
    if (FlagGet(B_FLAG_SLEEP_CLAUSE))
        return TRUE;
    return FALSE;
}

void ClearDamageCalcResults(void)
{
    for (u32 battler = 0; battler < MAX_BATTLERS_COUNT; battler++)
    {
        gBattleStruct->moveDamage[battler] = 0;
        gBattleStruct->critChance[battler] = 0;
        gBattleStruct->moveResultFlags[battler] = CAN_DAMAGE;
        gBattleStruct->noResultString[battler] = 0;
        gBattleStruct->missStringId[battler] = 0;
        gSpecialStatuses[battler].criticalHit = FALSE;
    }

    gBattleStruct->doneDoublesSpreadHit = FALSE;
    gBattleStruct->calculatedDamageDone = FALSE;
    gBattleStruct->calculatedSpreadMoveAccuracy = FALSE;
    gBattleStruct->printedStrongWindsWeakenedAttack = FALSE;
    gBattleStruct->numSpreadTargets = 0;
}

bool32 DoesDestinyBondFail(u32 battler)
{
    return GetGenConfig(GEN_CONFIG_DESTINY_BOND_FAIL) >= GEN_7 && gBattleMons[battler].volatiles.destinyBond;
}

// This check has always to be the last in a condtion statement because of the recording of AI data.
bool32 IsMoveEffectBlockedByTarget(enum Ability ability)
{
    if (ability == ABILITY_SHIELD_DUST)
    {
        RecordAbilityBattle(gBattlerTarget, ability);
        return TRUE;
    }
    else if (GetBattlerHoldEffect(gBattlerTarget) == HOLD_EFFECT_COVERT_CLOAK)
    {
        RecordItemEffectBattle(gBattlerTarget, HOLD_EFFECT_COVERT_CLOAK);
        return TRUE;
    }

    return FALSE;
}

bool32 IsPursuitTargetSet(void)
{
    for (u32 battler = 0; battler < gBattlersCount; battler++)
    {
        if (gBattleStruct->battlerState[battler].pursuitTarget)
            return TRUE;
    }
    return FALSE;
}

void ClearPursuitValues(void)
{
    for (u32 i = 0; i < gBattlersCount; i++)
        gBattleStruct->battlerState[i].pursuitTarget = FALSE;
    gBattleStruct->pursuitStoredSwitch = PARTY_SIZE;
}

void ClearPursuitValuesIfSet(u32 battler)
{
    if (gBattleStruct->battlerState[battler].pursuitTarget)
        ClearPursuitValues();
}

bool32 HasWeatherEffect(void)
{
    for (u32 battler = 0; battler < gBattlersCount; battler++)
    {
        if (!IsBattlerAlive(battler))
            continue;

        enum Ability ability = GetBattlerAbility(battler);
        switch (ability)
        {
        case ABILITY_CLOUD_NINE:
        case ABILITY_AIR_LOCK:
            return FALSE;
        default:
            break;
        }
    }

    return TRUE;
}

void UpdateStallMons(void)
{
    if (IsBattlerTurnDamaged(gBattlerTarget) || IsBattlerProtected(gBattlerAttacker, gBattlerTarget, gCurrentMove) || GetMoveCategory(gCurrentMove) == DAMAGE_CATEGORY_STATUS)
        return;
    if (!IsDoubleBattle() || GetMoveTarget(gCurrentMove) == MOVE_TARGET_SELECTED)
    {
        enum Type moveType = GetBattleMoveType(gCurrentMove); //  Probably doesn't handle dynamic move types right now
        enum Ability abilityAtk = GetBattlerAbility(gBattlerAttacker);
        enum Ability abilityDef = GetBattlerAbility(gBattlerTarget);
        if (CanAbilityAbsorbMove(gBattlerAttacker, gBattlerTarget, abilityDef, gCurrentMove, moveType, CHECK_TRIGGER))
        {
            gAiBattleData->playerStallMons[gBattlerPartyIndexes[gBattlerTarget]]++;
        }
        else if (CanAbilityBlockMove(gBattlerAttacker, gBattlerTarget, abilityAtk, abilityDef, gCurrentMove, CHECK_TRIGGER))
        {
            gAiBattleData->playerStallMons[gBattlerPartyIndexes[gBattlerTarget]]++;
        }
        else if (AI_GetMoveEffectiveness(gCurrentMove, gBattlerAttacker, gBattlerTarget) == 0)
        {
            gAiBattleData->playerStallMons[gBattlerPartyIndexes[gBattlerTarget]]++;
        }
    }
    //  Handling for moves that target multiple opponents in doubles not handled currently
}

bool32 TrySwitchInEjectPack(enum EjectPackTiming timing)
{
    // Because sorting the battlers by speed takes lots of cycles, it's better to just check if any of the battlers has the Eject items.
    u32 ejectPackBattlers = 0;
    u32 numEjectPackBattlers = 0;

    for (u32 i = 0; i < gBattlersCount; i++)
    {
        if (gDisableStructs[i].tryEjectPack
         && GetBattlerHoldEffect(i) == HOLD_EFFECT_EJECT_PACK
         && IsBattlerAlive(i)
         && CountUsablePartyMons(i) > 0)
        {
            ejectPackBattlers |= 1u << i;
            numEjectPackBattlers++;
        }
    }

    if (numEjectPackBattlers == 0)
        return FALSE;

    u8 battlers[4] = {0, 1, 2, 3};
    if (numEjectPackBattlers > 1)
        SortBattlersBySpeed(battlers, FALSE);

    for (u32 i = 0; i < gBattlersCount; i++)
        gDisableStructs[i].tryEjectPack = FALSE;

    for (u32 i = 0; i < gBattlersCount; i++)
    {
        u32 battler = battlers[i];

        if (!(ejectPackBattlers & 1u << battler))
            continue;

        gBattleScripting.battler = battler;
        gLastUsedItem = gBattleMons[battler].item;
        if (timing == FIRST_TURN)
            BattleScriptPushCursorAndCallback(BattleScript_EjectPackActivate_End3);
        else if (timing == END_TURN)
            BattleScriptExecute(BattleScript_EjectPackActivate_End2);
        else
            BattleScriptCall(BattleScript_EjectPackActivate_Ret);
        gAiLogicData->ejectPackSwitch = TRUE;
        return TRUE;
    }

    return FALSE;
}

#define UNPACK_VOLATILE_GETTERS(_enum, _fieldName, _typeMaxValue, ...) case _enum: return gBattleMons[battler].volatiles._fieldName;

// Gets the value of a volatile status flag for a certain battler
// Primarily used for the debug menu and scripts. Outside of it explicit references are preferred
u32 GetBattlerVolatile(u32 battler, enum Volatile _volatile)
{
    switch (_volatile)
    {
        VOLATILE_DEFINITIONS(UNPACK_VOLATILE_GETTERS)
        /* Expands to:
        case VOLATILE_CONFUSION:
            return gBattleMons[battler].volatiles.confusionTurns;
        */
        default: // Invalid volatile status
            return 0;
    }
}

#define UNPACK_VOLATILE_SETTERS(_enum, _fieldName, _typeMaxValue, ...) case _enum: gBattleMons[battler].volatiles._fieldName = min(GET_VOLATILE_MAXIMUM(_typeMaxValue), newValue); break;

// Sets the value of a volatile status flag for a certain battler
// Primarily used for the debug menu and scripts. Outside of it explicit references are preferred
void SetMonVolatile(u32 battler, enum Volatile _volatile, u32 newValue)
{
    switch (_volatile)
    {
        VOLATILE_DEFINITIONS(UNPACK_VOLATILE_SETTERS)
        /* Expands to:
        case VOLATILE_CONFUSION:
            gBattleMons[battler].volatiles.confusionTurns = min(MAX_BITS(3), newValue);
            break;
        */
        default: // Invalid volatile status
            return;
    }
}

bool32 ItemHealMonVolatile(u32 battler, u16 itemId)
{
    bool32 statusChanged = FALSE;
    const u8 *effect = GetItemEffect(itemId);
    if (effect[3] & ITEM3_STATUS_ALL)
    {
        statusChanged = (gBattleMons[battler].volatiles.infatuation || gBattleMons[battler].volatiles.confusionTurns > 0);
        gBattleMons[battler].volatiles.infatuation = 0;
        gBattleMons[battler].volatiles.confusionTurns = 0;
    }
    else if (effect[0] & ITEM0_INFATUATION)
    {
        statusChanged = !!gBattleMons[battler].volatiles.infatuation;
        gBattleMons[battler].volatiles.infatuation = 0;
    }
    else if (effect[3] & ITEM3_CONFUSION)
    {
        statusChanged = gBattleMons[battler].volatiles.confusionTurns > 0;
        gBattleMons[battler].volatiles.confusionTurns = 0;
    }

    return statusChanged;
}

// Hazards are added to a queue and applied based in order (FIFO)
void PushHazardTypeToQueue(u32 side, enum Hazards hazardType)
{
    if (!IsHazardOnSide(side, hazardType)) // Failsafe
        gBattleStruct->hazardsQueue[side][gBattleStruct->numHazards[side]++] = hazardType;
}

bool32 IsHazardOnSide(u32 side, enum Hazards hazardType)
{
    for (u32 i = 0; i < HAZARDS_MAX_COUNT; i++)
    {
        if (gBattleStruct->hazardsQueue[side][i] == hazardType)
            return TRUE;
    }
    return FALSE;
}

bool32 AreAnyHazardsOnSide(u32 side)
{
    return gBattleStruct->numHazards[side] > 0;
}

bool32 IsHazardOnSideAndClear(u32 side, enum Hazards hazardType)
{
    for (u32 i = 0; i < HAZARDS_MAX_COUNT; i++)
    {
        if (gBattleStruct->hazardsQueue[side][i] == hazardType)
        {
            gBattleStruct->hazardsQueue[side][i] = HAZARDS_NONE;
            if (hazardType == HAZARDS_SPIKES)
                gSideTimers[side].spikesAmount = 0;
            else if (hazardType == HAZARDS_TOXIC_SPIKES)
                gSideTimers[side].toxicSpikesAmount = 0;
            return TRUE;
        }
    }
    return FALSE;
}

void RemoveAllHazardsFromField(u32 side)
{
    gSideTimers[side].spikesAmount = 0;
    gSideTimers[side].toxicSpikesAmount = 0;
    gBattleStruct->numHazards[side] = 0;
    for (u32 i = 0; i < HAZARDS_MAX_COUNT; i++)
        gBattleStruct->hazardsQueue[side][i] = HAZARDS_NONE;
}

void RemoveHazardFromField(u32 side, enum Hazards hazardType)
{
    u32 i;
    for (i = 0; i < HAZARDS_MAX_COUNT; i++)
    {
        if (gBattleStruct->hazardsQueue[side][i] == hazardType)
        {
            gBattleStruct->hazardsQueue[side][i] = HAZARDS_NONE;
            gBattleStruct->numHazards[side]--;
            if (hazardType == HAZARDS_SPIKES)
                gSideTimers[side].spikesAmount = 0;
            else if (hazardType == HAZARDS_TOXIC_SPIKES)
                gSideTimers[side].toxicSpikesAmount = 0;
            break;
        }
    }
    while (i < HAZARDS_MAX_COUNT)
    {
        if (i+1 == HAZARDS_MAX_COUNT)
        {
            gBattleStruct->hazardsQueue[side][i] = HAZARDS_NONE;
            break;
        }
        gBattleStruct->hazardsQueue[side][i] = gBattleStruct->hazardsQueue[side][i+1];
        i++;
    }
}

bool32 CanMoveSkipAccuracyCalc(u32 battlerAtk, u32 battlerDef, enum Ability abilityAtk, enum Ability abilityDef, u32 move, enum FunctionCallOption option)
{
    bool32 effect = FALSE;
    enum Ability ability = ABILITY_NONE;
    enum BattleMoveEffects moveEffect = GetMoveEffect(move);
    u32 nonVolatileStatus = GetMoveNonVolatileStatus(move);

    if ((gBattleMons[battlerDef].volatiles.lockOn && gDisableStructs[battlerDef].battlerWithSureHit == battlerAtk)
     || (GetGenConfig(GEN_CONFIG_TOXIC_NEVER_MISS) >= GEN_6 && nonVolatileStatus == MOVE_EFFECT_TOXIC && IS_BATTLER_OF_TYPE(battlerAtk, TYPE_POISON))
     || gBattleMons[battlerDef].volatiles.glaiveRush)
    {
        effect = TRUE;
    }
    // If the attacker has the ability No Guard and they aren't targeting a Pokemon involved in a Sky Drop with the move Sky Drop, move hits.
    else if (abilityAtk == ABILITY_NO_GUARD
          && gBattleMons[battlerDef].volatiles.semiInvulnerable != STATE_COMMANDER
          && (moveEffect != EFFECT_SKY_DROP || gBattleStruct->skyDropTargets[battlerDef] == SKY_DROP_NO_TARGET))
    {
        effect = TRUE;
        ability = ABILITY_NO_GUARD;
    }
    // If the target has the ability No Guard and they aren't involved in a Sky Drop or the current move isn't Sky Drop, move hits.
    else if (abilityDef == ABILITY_NO_GUARD
          && (moveEffect != EFFECT_SKY_DROP || gBattleStruct->skyDropTargets[battlerDef] == SKY_DROP_NO_TARGET))
    {
        effect = TRUE;
        ability = ABILITY_NO_GUARD;
    }
    // If the target is under the effects of Telekinesis, and the move isn't a OH-KO move, move hits.
    else if (gBattleMons[battlerDef].volatiles.telekinesis
          && !IsSemiInvulnerable(battlerDef, CHECK_ALL)
          && moveEffect != EFFECT_OHKO
          && moveEffect != EFFECT_SHEER_COLD)
    {
        effect = TRUE;
    }
    else if (gBattleStruct->battlerState[battlerDef].pursuitTarget)
    {
        effect = TRUE;
    }
    else if (GetActiveGimmick(battlerAtk) == GIMMICK_Z_MOVE && !IsSemiInvulnerable(battlerDef, CHECK_ALL))
    {
        effect = TRUE;
    }
    else if (!BreaksThroughSemiInvulnerablity(battlerDef, move))
    {
        if (option == RUN_SCRIPT)
        {
            gBattleStruct->moveResultFlags[battlerDef] |= MOVE_RESULT_MISSED;
            effect = TRUE;
        }
        else
        {
            effect = FALSE;
        }
    }
    else if (B_MINIMIZE_DMG_ACC >= GEN_6
     && gBattleMons[battlerDef].volatiles.minimize
     && MoveIncreasesPowerToMinimizedTargets(move))
    {
        effect = TRUE;
    }
    else if (GetMoveAccuracy(move) == 0)
    {
        effect = TRUE;
    }

    if (!effect && HasWeatherEffect())
    {
        if (MoveAlwaysHitsInRain(move) && IsBattlerWeatherAffected(battlerDef, B_WEATHER_RAIN))
            effect = TRUE;
        else if ((gBattleWeather & (B_WEATHER_HAIL | B_WEATHER_SNOW)) && MoveAlwaysHitsInHailSnow(move))
            effect = TRUE;

        if (effect)
            return effect;
    }

    if (ability != ABILITY_NONE && option == RUN_SCRIPT)
        RecordAbilityBattle(battlerAtk, ABILITY_NO_GUARD);

    return effect;
}

u32 GetTotalAccuracy(u32 battlerAtk, u32 battlerDef, u32 move, enum Ability atkAbility, enum Ability defAbility, enum HoldEffect atkHoldEffect, enum HoldEffect defHoldEffect)
{
    u32 calc, moveAcc;
    s8 buff, accStage, evasionStage;
    u32 atkParam = GetBattlerHoldEffectParam(battlerAtk);
    u32 defParam = GetBattlerHoldEffectParam(battlerDef);

    gPotentialItemEffectBattler = battlerDef;
    accStage = gBattleMons[battlerAtk].statStages[STAT_ACC];
    evasionStage = gBattleMons[battlerDef].statStages[STAT_EVASION];
    if (atkAbility == ABILITY_UNAWARE || atkAbility == ABILITY_KEEN_EYE || atkAbility == ABILITY_MINDS_EYE
            || (GetGenConfig(GEN_ILLUMINATE_EFFECT) >= GEN_9 && atkAbility == ABILITY_ILLUMINATE))
        evasionStage = DEFAULT_STAT_STAGE;
    if (MoveIgnoresDefenseEvasionStages(move))
        evasionStage = DEFAULT_STAT_STAGE;
    if (defAbility == ABILITY_UNAWARE)
        accStage = DEFAULT_STAT_STAGE;

    if (gBattleMons[battlerDef].volatiles.foresight || gBattleMons[battlerDef].volatiles.miracleEye)
        buff = accStage;
    else
        buff = accStage + DEFAULT_STAT_STAGE - evasionStage;

    if (buff < MIN_STAT_STAGE)
        buff = MIN_STAT_STAGE;
    if (buff > MAX_STAT_STAGE)
        buff = MAX_STAT_STAGE;

    moveAcc = GetMoveAccuracy(move);
    // Check Thunder and Hurricane on sunny weather.
    if (IsBattlerWeatherAffected(battlerDef, B_WEATHER_SUN) && MoveHas50AccuracyInSun(move))
        moveAcc = 50;
    // Check Wonder Skin.
    if (defAbility == ABILITY_WONDER_SKIN && IsBattleMoveStatus(move) && moveAcc > 50)
        moveAcc = 50;

    calc = gAccuracyStageRatios[buff].dividend * moveAcc;
    calc /= gAccuracyStageRatios[buff].divisor;

    // Attacker's ability
    switch (atkAbility)
    {
    case ABILITY_COMPOUND_EYES:
        calc = (calc * 130) / 100; // 1.3 compound eyes boost
        break;
    case ABILITY_VICTORY_STAR:
        calc = (calc * 110) / 100; // 1.1 victory star boost
        break;
    case ABILITY_HUSTLE:
        if (IsBattleMovePhysical(move))
            calc = (calc * 80) / 100; // 1.2 hustle loss
        break;
    default:
        break;
    }

    // Target's ability
    switch (defAbility)
    {
    case ABILITY_SAND_VEIL:
        if (gBattleWeather & B_WEATHER_SANDSTORM && HasWeatherEffect())
            calc = (calc * 80) / 100; // 1.2 sand veil loss
        break;
    case ABILITY_SNOW_CLOAK:
        if ((gBattleWeather & (B_WEATHER_HAIL | B_WEATHER_SNOW)) && HasWeatherEffect())
            calc = (calc * 80) / 100; // 1.2 snow cloak loss
        break;
    case ABILITY_TANGLED_FEET:
        if (gBattleMons[battlerDef].volatiles.confusionTurns)
            calc = (calc * 50) / 100; // 1.5 tangled feet loss
        break;
    default:
        break;
    }

    // Attacker's ally's ability
    u32 atkAlly = BATTLE_PARTNER(battlerAtk);
    switch (GetBattlerAbility(atkAlly))
    {
    case ABILITY_VICTORY_STAR:
        if (IsBattlerAlive(atkAlly))
            calc = (calc * 110) / 100; // 1.1 ally's victory star boost
        break;
    default:
        break;
    }

    // Attacker's hold effect
    switch (atkHoldEffect)
    {
    case HOLD_EFFECT_WIDE_LENS:
        calc = (calc * (100 + atkParam)) / 100;
        break;
    case HOLD_EFFECT_ZOOM_LENS:
        if (HasBattlerActedThisTurn(battlerDef))
            calc = (calc * (100 + atkParam)) / 100;
        break;
    default:
        break;
    }

    // Target's hold effect
    switch (defHoldEffect)
    {
    case HOLD_EFFECT_EVASION_UP:
        calc = (calc * (100 - defParam)) / 100;
        break;
    default:
        break;
    }

    if (gBattleStruct->battlerState[battlerAtk].usedMicleBerry)
    {
        // TODO: Is this true?
        if (atkAbility == ABILITY_RIPEN)
            calc = (calc * 140) / 100;  // ripen gives 40% acc boost
        else
            calc = (calc * 120) / 100;  // 20% acc boost
    }

    if (gFieldStatuses & STATUS_FIELD_GRAVITY)
        calc = (calc * 5) / 3; // 1.66 Gravity acc boost

    if (B_AFFECTION_MECHANICS == TRUE && GetBattlerAffectionHearts(battlerDef) == AFFECTION_FIVE_HEARTS)
        calc = (calc * 90) / 100;

    if (HasWeatherEffect() && gBattleWeather & B_WEATHER_FOG)
        calc = (calc * 60) / 100; // modified by 3/5

    return calc;
}

bool32 IsSemiInvulnerable(u32 battler, enum SemiInvulnerableExclusion excludeCommander)
{
    if (gBattleMons[battler].volatiles.semiInvulnerable == STATE_COMMANDER)
        return excludeCommander != EXCLUDE_COMMANDER;
    return gBattleMons[battler].volatiles.semiInvulnerable != STATE_NONE;
}

bool32 BreaksThroughSemiInvulnerablity(u32 battler, u32 move)
{
    switch (gBattleMons[battler].volatiles.semiInvulnerable)
    {
    case STATE_UNDERGROUND:
        return MoveDamagesUnderground(move);
    case STATE_UNDERWATER:
        return MoveDamagesUnderWater(move);
    case STATE_ON_AIR:
    case STATE_SKY_DROP:
        return MoveDamagesAirborne(move) || MoveDamagesAirborneDoubleDamage(move);
    case STATE_PHANTOM_FORCE:
        return FALSE;
    case STATE_COMMANDER:
        return FALSE;
    case STATE_NONE:
        return TRUE;
    }

    return FALSE;
}

bool32 HasPartnerTrainer(u32 battler)
{
    if ((GetBattlerSide(battler) == B_SIDE_PLAYER && gBattleTypeFlags & BATTLE_TYPE_PLAYER_HAS_PARTNER)
     || (GetBattlerSide(battler) == B_SIDE_OPPONENT && gBattleTypeFlags & BATTLE_TYPE_TWO_OPPONENTS))
        return TRUE;
    else
        return FALSE;
}

static bool32 IsOpposingSideEmpty(u32 battler)
{
    u32 oppositeBattler = BATTLE_OPPOSITE(battler);

    if (IsBattlerAlive(oppositeBattler))
        return FALSE;

    if (!IsDoubleBattle())
        return TRUE;

    if (IsBattlerAlive(BATTLE_PARTNER(oppositeBattler)))
        return FALSE;
    return TRUE;
}

bool32 IsAffectedByPowderMove(u32 battler, u32 ability, enum HoldEffect holdEffect)
{
    if ((GetGenConfig(GEN_CONFIG_POWDER_OVERCOAT) >= GEN_6 && ability == ABILITY_OVERCOAT)
        || (GetGenConfig(GEN_CONFIG_POWDER_GRASS) >= GEN_6 && IS_BATTLER_OF_TYPE(battler, TYPE_GRASS))
        || holdEffect == HOLD_EFFECT_SAFETY_GOGGLES)
        return FALSE;
    return TRUE;
}

static u32 GetMirrorMoveMove(void)
{
    s32 i, validMovesCount;
    u16 move = MOVE_NONE;
    u16 validMoves[MAX_BATTLERS_COUNT] = {0};

    for (validMovesCount = 0, i = 0; i < gBattlersCount; i++)
    {
        if (i != gBattlerAttacker)
        {
            move = gBattleStruct->lastTakenMoveFrom[gBattlerAttacker][i];
            if (move != MOVE_NONE && move != MOVE_UNAVAILABLE)
            {
                validMoves[validMovesCount] = move;
                validMovesCount++;
            }
        }
    }

    move = gBattleStruct->lastTakenMove[gBattlerAttacker];
    if ((move == MOVE_NONE || move == MOVE_UNAVAILABLE) && validMovesCount != 0)
        move = validMoves[Random() % validMovesCount];

    if (GetActiveGimmick(gBattlerAttacker) == GIMMICK_Z_MOVE && !IsBattleMoveStatus(move))
        move = GetTypeBasedZMove(move);

    return move;
}

static bool32 InvalidMetronomeMove(u32 move)
{
    return GetMoveEffect(move) == EFFECT_PLACEHOLDER
        || IsMoveMetronomeBanned(move);
}

static u32 GetMetronomeMove(void)
{
    u32 move = MOVE_NONE;

#if B_METRONOME_MOVES >= GEN_9
    u32 moveCount = MOVES_COUNT_GEN9;
#elif B_METRONOME_MOVES >= GEN_8
    u32 moveCount = MOVES_COUNT_GEN8;
#elif B_METRONOME_MOVES >= GEN_7
    u32 moveCount = MOVES_COUNT_GEN7;
#elif B_METRONOME_MOVES >= GEN_6
    u32 moveCount = MOVES_COUNT_GEN6;
#elif B_METRONOME_MOVES >= GEN_5
    u32 moveCount = MOVES_COUNT_GEN5;
#elif B_METRONOME_MOVES >= GEN_4
    u32 moveCount = MOVES_COUNT_GEN4;
#elif B_METRONOME_MOVES >= GEN_3
    u32 moveCount = MOVES_COUNT_GEN3;
#elif B_METRONOME_MOVES >= GEN_2
    u32 moveCount = MOVES_COUNT_GEN2;
#else
    u32 moveCount = MOVES_COUNT_GEN1;
#endif

    move = RandomUniformExcept(RNG_METRONOME, 1, moveCount - 1, InvalidMetronomeMove);
    return move;
}

static u32 GetAssistMove(void)
{
    u32 move = MOVE_NONE;
    s32 chooseableMovesNo = 0;
    struct Pokemon *party;
    u16 *validMoves = Alloc(sizeof(u16) * PARTY_SIZE * MAX_MON_MOVES);

    if (validMoves != NULL)
    {
        party = GetBattlerParty(gBattlerAttacker);

        for (u32 monId = 0; monId < PARTY_SIZE; monId++)
        {
            if (monId == gBattlerPartyIndexes[gBattlerAttacker])
                continue;
            if (GetMonData(&party[monId], MON_DATA_SPECIES_OR_EGG) == SPECIES_NONE)
                continue;
            if (GetMonData(&party[monId], MON_DATA_SPECIES_OR_EGG) == SPECIES_EGG)
                continue;

            for (u32 moveId = 0; moveId < MAX_MON_MOVES; moveId++)
            {
                u16 move = GetMonData(&party[monId], MON_DATA_MOVE1 + moveId);

                if (IsMoveAssistBanned(move))
                    continue;

                validMoves[chooseableMovesNo++] = move;
            }
        }
    }

    if (chooseableMovesNo)
        move = validMoves[Random() % chooseableMovesNo];

    TRY_FREE_AND_SET_NULL(validMoves);

    return move;
}

u32 GetNaturePowerMove(u32 battler)
{
    u32 move = gBattleEnvironmentInfo[gBattleEnvironment].naturePower;
    if (gFieldStatuses & STATUS_FIELD_MISTY_TERRAIN)
        move = MOVE_MOONBLAST;
    else if (gFieldStatuses & STATUS_FIELD_ELECTRIC_TERRAIN)
        move = MOVE_THUNDERBOLT;
    else if (gFieldStatuses & STATUS_FIELD_GRASSY_TERRAIN)
        move = MOVE_ENERGY_BALL;
    else if (gFieldStatuses & STATUS_FIELD_PSYCHIC_TERRAIN)
        move = MOVE_PSYCHIC;
    else if (gBattleEnvironmentInfo[gBattleEnvironment].naturePower == MOVE_NONE)
        move = MOVE_TRI_ATTACK;

    return move;
}

static u32 GetSleepTalkMove(void)
{
    u32 move = MOVE_NONE;

    u32 i, unusableMovesBits = 0, movePosition;

    if (GetBattlerAbility(gBattlerAttacker) != ABILITY_COMATOSE
     && !(gBattleMons[gBattlerAttacker].status1 & STATUS1_SLEEP))
        return move;

    for (i = 0; i < MAX_MON_MOVES; i++)
    {
        if (IsMoveSleepTalkBanned(gBattleMons[gBattlerAttacker].moves[i])
            || gBattleMoveEffects[GetMoveEffect(gBattleMons[gBattlerAttacker].moves[i])].twoTurnEffect)
            unusableMovesBits |= (1 << (i));
    }

    unusableMovesBits = CheckMoveLimitations(gBattlerAttacker, unusableMovesBits, ~(MOVE_LIMITATION_PP | MOVE_LIMITATION_CHOICE_ITEM));
    if (unusableMovesBits == ALL_MOVES_MASK) // all 4 moves cannot be chosen
        return move;

    // Set Sleep Talk as used move, so it works with Last Resort.
    gDisableStructs[gBattlerAttacker].usedMoves |= 1u << gCurrMovePos;
    do
    {
        movePosition = MOD(Random(), MAX_MON_MOVES);
    } while ((1u << movePosition) & unusableMovesBits);

    move = gBattleMons[gBattlerAttacker].moves[movePosition];
    gCurrMovePos = movePosition;

    return move;
}

static u32 GetCopyCatMove(void)
{
    if (gLastUsedMove == MOVE_NONE
     || gLastUsedMove == MOVE_UNAVAILABLE
     || IsMoveCopycatBanned(gLastUsedMove)
     || IsZMove(gLastUsedMove))
        return MOVE_NONE;

    return gLastUsedMove;
}

static u32 GetMeFirstMove(void)
{
    u32 move = GetChosenMoveFromPosition(gBattlerTarget);

    if (IsBattleMoveStatus(move)
     || IsMoveMeFirstBanned(move)
     || HasBattlerActedThisTurn(gBattlerTarget))
        return MOVE_NONE;

    return move;
}

void RemoveAbilityFlags(u32 battler)
{
    switch (GetBattlerAbility(battler))
    {
    case ABILITY_FLASH_FIRE:
        gDisableStructs[battler].flashFireBoosted = FALSE;
        break;
    case ABILITY_VESSEL_OF_RUIN:
        gBattleMons[battler].volatiles.vesselOfRuin = FALSE;
        break;
    case ABILITY_TABLETS_OF_RUIN:
        gBattleMons[battler].volatiles.tabletsOfRuin = FALSE;
        break;
    case ABILITY_SWORD_OF_RUIN:
        gBattleMons[battler].volatiles.swordOfRuin = FALSE;
        break;
    case ABILITY_BEADS_OF_RUIN:
        gBattleMons[battler].volatiles.beadsOfRuin = FALSE;
        break;
    default:
       break;
    }
}

bool32 IsAnyTargetTurnDamaged(u32 battlerAtk)
{
    for (u32 battlerDef = 0; battlerDef < gBattlersCount; battlerDef++)
    {
        if (battlerDef == battlerAtk)
            continue;
        if (IsBattlerTurnDamaged(battlerDef))
            return TRUE;
    }
    return FALSE;
}

bool32 IsAllowedToUseBag(void)
{
    switch(VarGet(B_VAR_NO_BAG_USE))
    {
    case NO_BAG_RESTRICTION:
        return TRUE;
    case NO_BAG_AGAINST_TRAINER: //True in wild battle; False in trainer battle
        return (!(gBattleTypeFlags & BATTLE_TYPE_TRAINER));
    case NO_BAG_IN_BATTLE:
        return FALSE;
    default:
        return TRUE; // Undefined Behavior
    }
}

bool32 IsMimikyuDisguised(u32 battler)
{
    return gBattleMons[battler].species == SPECIES_MIMIKYU_DISGUISED
        || gBattleMons[battler].species == SPECIES_MIMIKYU_TOTEM_DISGUISED;
}