Fixes items preventing other switch in effects

data/battle_scripts_1.s

@@ -10079,14 +10079,18 @@ BattleScript_BerserkGeneRet_End:
 	end3
 
 BattleScript_BoosterEnergyEnd2::
+	call BattleScript_BoosterEnergyRet
+	end2
+
+BattleScript_BoosterEnergyRet::
 	playanimation BS_SCRIPTING, B_ANIM_HELD_ITEM_EFFECT, sB_ANIM_ARG1
 	call BattleScript_AbilityPopUpScripting
 	printstring STRINGID_BOOSTERENERGYACTIVATES
 	waitmessage B_WAIT_TIME_MED
 	printstring STRINGID_STATWASHEIGHTENED
 	waitmessage B_WAIT_TIME_MED
 	removeitem BS_SCRIPTING
-	end2
+	return
 
 BattleScript_EffectSnow::
 	attackcanceler

include/battle_scripts.h

@@ -518,6 +518,7 @@ extern const u8 BattleScript_AromaVeilProtectsRet[];
 extern const u8 BattleScript_LowerAtkSpAtk[];
 extern const u8 BattleScript_Terastallization[];
 extern const u8 BattleScript_BoosterEnergyEnd2[];
+extern const u8 BattleScript_BoosterEnergyRet[];
 extern const u8 BattleScript_TeraShellDistortingTypeMatchups[];
 extern const u8 BattleScript_TeraFormChange[];
 

include/battle_util.h

@@ -65,16 +65,20 @@ enum {
 #define ABILITYEFFECT_WATER_SPORT                253 // Only used if B_SPORT_TURNS >= GEN_6
 
 // For the first argument of ItemBattleEffects, to deteremine which block of item effects to try
-#define ITEMEFFECT_ON_SWITCH_IN                 0
-#define ITEMEFFECT_NORMAL                       1
-#define ITEMEFFECT_DUMMY                        2 // Unused, empty
-#define ITEMEFFECT_MOVE_END                     3
-#define ITEMEFFECT_KINGSROCK                    4
-#define ITEMEFFECT_TARGET                       5
-#define ITEMEFFECT_ORBS                         6
-#define ITEMEFFECT_LIFEORB_SHELLBELL            7
-#define ITEMEFFECT_USE_LAST_ITEM                8 // move end effects for just the battler, not whole field
-#define ITEMEFFECT_STATS_CHANGED                9 // For White Herb and Eject Pack
+enum ItemEffect
+{
+    ITEMEFFECT_NONE,
+    ITEMEFFECT_ON_SWITCH_IN,
+    ITEMEFFECT_ON_SWITCH_IN_FIRST_TURN,
+    ITEMEFFECT_NORMAL,
+    ITEMEFFECT_MOVE_END,
+    ITEMEFFECT_KINGSROCK,
+    ITEMEFFECT_TARGET,
+    ITEMEFFECT_ORBS,
+    ITEMEFFECT_LIFEORB_SHELLBELL,
+    ITEMEFFECT_USE_LAST_ITEM, // move end effects for just the battler, not whole field
+    ITEMEFFECT_STATS_CHANGED, // For White Herb and Eject Pack
+};
 
 #define WEATHER_HAS_EFFECT ((!IsAbilityOnField(ABILITY_CLOUD_NINE) && !IsAbilityOnField(ABILITY_AIR_LOCK)))
 
@@ -208,7 +212,7 @@ bool32 IsBattlerProtected(u32 battlerAtk, u32 battlerDef, u32 move);
 bool32 CanBattlerEscape(u32 battler); // no ability check
 void BattleScriptExecute(const u8 *BS_ptr);
 void BattleScriptPushCursorAndCallback(const u8 *BS_ptr);
-u8 ItemBattleEffects(u8 caseID, u32 battler, bool32 moveTurn);
+u32 ItemBattleEffects(enum ItemEffect, u32 battler, bool32 moveTurn);
 void ClearVariousBattlerFlags(u32 battler);
 void HandleAction_RunBattleScript(void);
 u32 SetRandomTarget(u32 battler);
@@ -265,7 +269,7 @@ void TryRestoreHeldItems(void);
 bool32 CanStealItem(u32 battlerStealing, u32 battlerItem, u16 item);
 void TrySaveExchangedItem(u32 battler, u16 stolenItem);
 bool32 IsPartnerMonFromSameTrainer(u32 battler);
-u8 TryHandleSeed(u32 battler, u32 terrainFlag, u8 statId, u16 itemId, bool32 execute);
+u32 TryHandleSeed(u32 battler, u32 terrainFlag, u32 statId, u32 itemId, enum ItemEffect caseID);
 bool32 IsBattlerAffectedByHazards(u32 battler, bool32 toxicSpikes);
 void SortBattlersBySpeed(u8 *battlers, bool32 slowToFast);
 bool32 CompareStat(u32 battler, u8 statId, u8 cmpTo, u8 cmpKind);

src/battle_main.c

@@ -3900,7 +3900,7 @@ static void TryDoEventsBeforeFirstTurn(void)
     case FIRST_TURN_EVENTS_ITEM_EFFECTS:
         while (gBattleStruct->switchInBattlerCounter < gBattlersCount) // From fastest to slowest
         {
-            if (ItemBattleEffects(ITEMEFFECT_ON_SWITCH_IN, gBattlerByTurnOrder[gBattleStruct->switchInBattlerCounter++], FALSE))
+            if (ItemBattleEffects(ITEMEFFECT_ON_SWITCH_IN_FIRST_TURN, gBattlerByTurnOrder[gBattleStruct->switchInBattlerCounter++], FALSE))
                 return;
         }
         gBattleStruct->switchInBattlerCounter = 0;

src/battle_script_commands.c

@@ -10410,16 +10410,16 @@ static void Cmd_various(void)
             switch (GetBattlerHoldEffectParam(battler))
             {
             case HOLD_EFFECT_PARAM_ELECTRIC_TERRAIN:
-                effect = TryHandleSeed(battler, STATUS_FIELD_ELECTRIC_TERRAIN, STAT_DEF, item, FALSE);
+                effect = TryHandleSeed(battler, STATUS_FIELD_ELECTRIC_TERRAIN, STAT_DEF, item, ITEMEFFECT_NONE);
                 break;
             case HOLD_EFFECT_PARAM_GRASSY_TERRAIN:
-                effect = TryHandleSeed(battler, STATUS_FIELD_GRASSY_TERRAIN, STAT_DEF, item, FALSE);
+                effect = TryHandleSeed(battler, STATUS_FIELD_GRASSY_TERRAIN, STAT_DEF, item, ITEMEFFECT_NONE);
                 break;
             case HOLD_EFFECT_PARAM_MISTY_TERRAIN:
-                effect = TryHandleSeed(battler, STATUS_FIELD_MISTY_TERRAIN, STAT_SPDEF, item, FALSE);
+                effect = TryHandleSeed(battler, STATUS_FIELD_MISTY_TERRAIN, STAT_SPDEF, item, ITEMEFFECT_NONE);
                 break;
             case HOLD_EFFECT_PARAM_PSYCHIC_TERRAIN:
-                effect = TryHandleSeed(battler, STATUS_FIELD_PSYCHIC_TERRAIN, STAT_SPDEF, item, FALSE);
+                effect = TryHandleSeed(battler, STATUS_FIELD_PSYCHIC_TERRAIN, STAT_SPDEF, item, ITEMEFFECT_NONE);
                 break;
             }