Bestow

asm/macros/battle_script.inc

@@ -1445,6 +1445,11 @@
 	.4byte \ptr
 	.endm
 	
+	.macro trybestow ptr
+	various BS_ATTACKER, VARIOUS_BESTOW
+	.4byte \ptr
+	.endm
+	
 	.macro invertstatstages battler
 	various \battler, VARIOUS_INVERT_STAT_STAGES
 	.endm

data/battle_scripts_1.s

@@ -325,6 +325,20 @@ gBattleScriptsForMoveEffects:: @ 82D86A8
 	.4byte BattleScript_EffectPowerTrick
 	.4byte BattleScript_EffectFlameBurst
 	.4byte BattleScript_EffectAfterYou
+	.4byte BattleScript_EffectBestow
+	
+BattleScript_EffectBestow:
+	attackcanceler
+	accuracycheck BattleScript_PrintMoveMissed, NO_ACC_CALC_CHECK_LOCK_ON
+	attackstring
+	ppreduce
+	jumpifsubstituteblocks BattleScript_ButItFailed
+	trybestow BattleScript_ButItFailed
+	attackanimation
+	waitanimation
+	printstring STRINGID_BESTOWITEMGIVING
+	waitmessage 0x40
+	goto BattleScript_MoveEnd
 	
 BattleScript_EffectAfterYou:
 	attackcanceler

include/battle_util.h

@@ -92,5 +92,6 @@ u16 GetMegaEvolutionSpecies(u16 preEvoSpecies, u16 heldItemId);
 bool32 CanMegaEvolve(u8 battlerId);
 void UndoMegaEvolution(u8 monId);
 bool32 DoBattlersShareType(u32 battler1, u32 battler2);
+bool32 CanBattlerGetOrLoseItem(u8 battlerId, u16 itemId);
 
 #endif // GUARD_BATTLE_UTIL_H

include/constants/battle_move_effects.h

@@ -314,5 +314,6 @@
 #define EFFECT_POWER_TRICK 308
 #define EFFECT_FLAME_BURST 309
 #define EFFECT_AFTER_YOU 310
+#define EFFECT_BESTOW 311
 
 #endif  // GUARD_CONSTANTS_BATTLE_MOVE_EFFECTS_H

include/constants/battle_script_commands.h

@@ -116,6 +116,7 @@
 #define VARIOUS_CURE_STATUS						62
 #define VARIOUS_POWER_TRICK						63
 #define VARIOUS_AFTER_YOU						64
+#define VARIOUS_BESTOW							65
 
 // atk80, dmg manipulation
 #define ATK80_DMG_CHANGE_SIGN                               0

include/constants/battle_string_ids.h

@@ -509,6 +509,7 @@
 #define	STRINGID_INFESTATION 506
 #define	STRINGID_NOEFFECTONTARGET 507
 #define	STRINGID_BURSTINGFLAMESHIT 508
+#define	STRINGID_BESTOWITEMGIVING 509
 
 #define BATTLESTRINGS_COUNT     521
 

src/battle_message.c

@@ -650,6 +650,7 @@ static const u8 sText_severely[] = _("severely ");
 static const u8 sText_Infestation[] = _("{B_DEF_NAME_WITH_PREFIX} has been afflicted\nwith an infestation by {B_ATK_NAME_WITH_PREFIX}!");
 static const u8 sText_NoEffectOnTarget[] = _("It had no effect\non {B_DEF_NAME_WITH_PREFIX}!");
 static const u8 sText_BurstingFlames[] = _("The bursting flames\nhit {B_SCR_ACTIVE_NAME_WITH_PREFIX}!");
+static const u8 sText_BestowItemGiving[] = _("{B_DEF_NAME_WITH_PREFIX} received {B_LAST_ITEM}\nfrom {B_ATK_NAME_WITH_PREFIX}!");
 
 const u8 *const gBattleStringsTable[BATTLESTRINGS_COUNT] =
 {
@@ -1151,6 +1152,7 @@ const u8 *const gBattleStringsTable[BATTLESTRINGS_COUNT] =
     sText_Infestation,
     sText_NoEffectOnTarget,
     sText_BurstingFlames,
+    sText_BestowItemGiving,
 };
 
 const u16 gTerrainStringIds[] =

src/battle_script_commands.c

@@ -7010,6 +7010,31 @@ static void atk76_various(void)
             gBattlescriptCurrInstr += 7;
         }
         return;
+    case VARIOUS_BESTOW:
+        if (gBattleMons[gBattlerAttacker].item == ITEM_NONE
+            || gBattleMons[gBattlerTarget].item != ITEM_NONE
+            || !CanBattlerGetOrLoseItem(gBattlerAttacker, gBattleMons[gBattlerAttacker].item)
+            || !CanBattlerGetOrLoseItem(gBattlerTarget, gBattleMons[gBattlerAttacker].item))
+        {
+            gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 3);
+        }
+        else
+        {
+            gLastUsedItem = gBattleMons[gBattlerAttacker].item;
+
+            gActiveBattler = gBattlerAttacker;
+            gBattleMons[gActiveBattler].item = ITEM_NONE;
+            BtlController_EmitSetMonData(0, REQUEST_HELDITEM_BATTLE, 0, 2, &gBattleMons[gActiveBattler].item);
+            MarkBattlerForControllerExec(gActiveBattler);
+
+            gActiveBattler = gBattlerTarget;
+            gBattleMons[gActiveBattler].item = gLastUsedItem;
+            BtlController_EmitSetMonData(0, REQUEST_HELDITEM_BATTLE, 0, 2, &gBattleMons[gActiveBattler].item);
+            MarkBattlerForControllerExec(gActiveBattler);
+
+            gBattlescriptCurrInstr += 7;
+        }
+        return;
     }
 
     gBattlescriptCurrInstr += 3;
@@ -9687,10 +9712,10 @@ static void atkD2_tryswapitems(void) // trick
         // can't swap if two pokemon don't have an item
         // or if either of them is an enigma berry or a mail
         else if ((gBattleMons[gBattlerAttacker].item == 0 && gBattleMons[gBattlerTarget].item == 0)
-                 || gBattleMons[gBattlerAttacker].item == ITEM_ENIGMA_BERRY
+                 || !CanBattlerGetOrLoseItem(gBattlerAttacker, gBattleMons[gBattlerAttacker].item)
-                 || gBattleMons[gBattlerTarget].item == ITEM_ENIGMA_BERRY
+                 || !CanBattlerGetOrLoseItem(gBattlerAttacker, gBattleMons[gBattlerTarget].item)
-                 || IS_ITEM_MAIL(gBattleMons[gBattlerAttacker].item)
+                 || !CanBattlerGetOrLoseItem(gBattlerTarget, gBattleMons[gBattlerTarget].item)
-                 || IS_ITEM_MAIL(gBattleMons[gBattlerTarget].item))
+                 || !CanBattlerGetOrLoseItem(gBattlerTarget, gBattleMons[gBattlerAttacker].item))
         {
             gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 1);
         }

src/battle_util.c

@@ -24,6 +24,7 @@
 #include "link.h"
 #include "berry.h"
 #include "pokedex.h"
+#include "mail.h"
 #include "constants/battle_config.h"
 
 extern u8 weather_get_current(void);
@@ -5680,3 +5681,21 @@ bool32 DoBattlersShareType(u32 battler1, u32 battler2)
     else
         return FALSE;
 }
+
+bool32 CanBattlerGetOrLoseItem(u8 battlerId, u16 itemId)
+{
+    u16 species = gBattleMons[battlerId].species;
+
+    if (IS_ITEM_MAIL(itemId))
+        return FALSE;
+    else if (itemId == ITEM_ENIGMA_BERRY)
+        return FALSE;
+    else if (species == SPECIES_KYOGRE && itemId == ITEM_BLUE_ORB)
+        return FALSE;
+    else if (species == SPECIES_GROUDON && itemId == ITEM_RED_ORB)
+        return FALSE;
+    else if (ItemId_GetHoldEffect(itemId) == HOLD_EFFECT_MEGA_STONE && GetMegaEvolutionSpecies(species, itemId) != SPECIES_NONE)
+        return FALSE;
+    else
+        return TRUE;
+}

src/data/battle_moves.h

@@ -6201,7 +6201,7 @@ const struct BattleMove gBattleMoves[MOVES_COUNT] =
 		.split = SPLIT_SPECIAL,
 	},
 	{ // MOVE_BESTOW
-		.effect = EFFECT_PLACEHOLDER, // Needs a custom move effect
+		.effect = EFFECT_BESTOW,
 		.power = 0,
 		.type = TYPE_NORMAL,
 		.accuracy = 0,