Gigantamax Flag

include/pokemon.h

@@ -333,6 +333,7 @@ struct SpeciesInfo /*0x24*/
  /* 0x1F */ u8 bodyColor : 7;
             u8 noFlip : 1;
  /* 0x20 */ u16 flags;
+ /* 0x22 */ u8 gigantamax:1;
 };
 
 struct BattleMove

src/battle_dynamax.c

@@ -150,8 +150,7 @@ bool32 CanDynamax(u16 battlerId)
 // Returns whether a battler is transformed into a Gigantamax form.
 bool32 IsGigantamaxed(u16 battlerId) {
     // TODO: Incorporate Gigantamax factor.
-    if (gBattleMons[battlerId].species >= (SPECIES_VENUSAUR_GMAX)
-        && gBattleMons[battlerId].species <= (SPECIES_URSHIFU_RAPID_STRIKE_STYLE_GMAX))
+    if ((gSpeciesInfo[gBattleMons[battlerId].species].gigantamax))
         return TRUE;
     return FALSE;
 }