Fixes Toxic Debris + CanTargetFaintAi index issue (#3306)

* Fixes Toxic Debris + CanTargetFaintAi index issue

* swap macro

data/battle_scripts_1.s

@@ -7333,6 +7333,9 @@ BattleScript_ToxicDebrisActivates::
 	printstring STRINGID_POISONSPIKESSCATTERED
 	waitmessage B_WAIT_TIME_LONG
 BattleScript_ToxicDebrisRet:
+	copybyte sBATTLER, gBattlerTarget
+	copybyte gBattlerTarget, gBattlerAttacker
+	copybyte gBattlerAttacker, sBATTLER
 	return
 
 BattleScript_EarthEaterActivates::

src/battle_ai_util.c

@@ -1154,7 +1154,7 @@ bool32 CanTargetFaintAi(u8 battlerDef, u8 battlerAtk)
     for (i = 0; i < MAX_MON_MOVES; i++)
     {
         if (moves[i] != MOVE_NONE && moves[i] != 0xFFFF && !(unusable & gBitTable[i])
-            && AI_DATA->simulatedDmg[battlerDef][battlerAtk][moves[i]] >= gBattleMons[battlerAtk].hp)
+            && AI_DATA->simulatedDmg[battlerDef][battlerAtk][i] >= gBattleMons[battlerAtk].hp)
         {
             return TRUE;
         }

src/battle_util.c

@@ -5710,10 +5710,10 @@ u8 AbilityBattleEffects(u8 caseID, u8 battler, u16 ability, u8 special, u16 move
              && !gProtectStructs[gBattlerAttacker].confusionSelfDmg
              && IS_MOVE_PHYSICAL(gCurrentMove)
              && TARGET_TURN_DAMAGED
-             && !(gSideStatuses[GetBattlerSide(gBattlerAttacker)] & SIDE_STATUS_TOXIC_SPIKES)
+             && (gSideTimers[gBattlerAttacker].toxicSpikesAmount != 2)
              && IsBattlerAlive(gBattlerTarget))
             {
-                gBattlerTarget = gBattlerAttacker;
+                SWAP(gBattlerAttacker, gBattlerTarget, i);
                 BattleScriptPushCursor();
                 gBattlescriptCurrInstr = BattleScript_ToxicDebrisActivates;
                 effect++;

test/battle/ability/toxic_debris.c

@@ -0,0 +1,96 @@
+#include "global.h"
+#include "test/battle.h"
+
+SINGLE_BATTLE_TEST("Toxic Debris sets Toxic Spikes on the opposing side if hit by a physical attack")
+{
+    u32 move;
+
+    PARAMETRIZE { move = MOVE_TACKLE;}
+    PARAMETRIZE { move = MOVE_SWIFT;}
+
+    GIVEN {
+        PLAYER(SPECIES_WOBBUFFET) { Ability(ABILITY_TOXIC_DEBRIS); }
+        OPPONENT(SPECIES_WOBBUFFET);
+    } WHEN {
+        TURN { MOVE(opponent, move); }
+    } SCENE {
+        if (move == MOVE_TACKLE) {
+            ABILITY_POPUP(player, ABILITY_TOXIC_DEBRIS);
+            MESSAGE("Poison Spikes were scattered all around the opposing team's feet!");
+        }
+        else {
+            NOT ABILITY_POPUP(player, ABILITY_TOXIC_DEBRIS);
+            NOT MESSAGE("Poison Spikes were scattered all around the opposing team's feet!");
+        }
+    }
+}
+
+SINGLE_BATTLE_TEST("Toxic Debris does not activate if two layers of Toxic Spikes are already up")
+{
+    GIVEN {
+        PLAYER(SPECIES_WOBBUFFET) { Ability(ABILITY_TOXIC_DEBRIS); }
+        OPPONENT(SPECIES_WOBBUFFET);
+    } WHEN {
+        TURN { MOVE(opponent, MOVE_TACKLE); }
+        TURN { MOVE(opponent, MOVE_TACKLE); }
+        TURN { MOVE(opponent, MOVE_TACKLE); }
+    } SCENE {
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_TACKLE, opponent);
+        ABILITY_POPUP(player, ABILITY_TOXIC_DEBRIS);
+        MESSAGE("Poison Spikes were scattered all around the opposing team's feet!");
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_TACKLE, opponent);
+        ABILITY_POPUP(player, ABILITY_TOXIC_DEBRIS);
+        MESSAGE("Poison Spikes were scattered all around the opposing team's feet!");
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_TACKLE, opponent);
+        NOT ABILITY_POPUP(player, ABILITY_TOXIC_DEBRIS);
+        NOT MESSAGE("Poison Spikes were scattered all around the opposing team's feet!");
+    }
+}
+
+SINGLE_BATTLE_TEST("If a Substitute is hit, Toxic Debris does not set Toxic Spikes")
+{
+    GIVEN {
+        PLAYER(SPECIES_WOBBUFFET) { Ability(ABILITY_TOXIC_DEBRIS); }
+        OPPONENT(SPECIES_WOBBUFFET);
+    } WHEN {
+        TURN { MOVE(player, MOVE_SUBSTITUTE); }
+        TURN { MOVE(opponent, MOVE_TACKLE); }
+    } SCENE {
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_SUBSTITUTE, player);
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_TACKLE, opponent);
+        NOT ABILITY_POPUP(player, ABILITY_TOXIC_DEBRIS);
+        NOT MESSAGE("Poison Spikes were scattered all around the opposing team's feet!");
+    }
+}
+
+SINGLE_BATTLE_TEST("Each hit of a Multi Hit move activates Toxic Debris")
+{
+    GIVEN {
+        PLAYER(SPECIES_WOBBUFFET) { Ability(ABILITY_TOXIC_DEBRIS); }
+        OPPONENT(SPECIES_WOBBUFFET);
+    } WHEN {
+        TURN { MOVE(opponent, MOVE_FURY_SWIPES); }
+    } SCENE {
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_FURY_SWIPES, opponent);
+        ABILITY_POPUP(player, ABILITY_TOXIC_DEBRIS);
+        MESSAGE("Poison Spikes were scattered all around the opposing team's feet!");
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_FURY_SWIPES, opponent);
+        ABILITY_POPUP(player, ABILITY_TOXIC_DEBRIS);
+        MESSAGE("Poison Spikes were scattered all around the opposing team's feet!");
+    }
+}
+
+SINGLE_BATTLE_TEST("Air Balloon is popped after Toxic Debris activates")
+{
+    GIVEN {
+        PLAYER(SPECIES_WOBBUFFET) { Ability(ABILITY_TOXIC_DEBRIS); Item(ITEM_AIR_BALLOON); }
+        OPPONENT(SPECIES_WOBBUFFET);
+    } WHEN {
+        TURN { MOVE(opponent, MOVE_TACKLE); }
+    } SCENE {
+        ANIMATION(ANIM_TYPE_MOVE, MOVE_TACKLE, opponent);
+        ABILITY_POPUP(player, ABILITY_TOXIC_DEBRIS);
+        MESSAGE("Poison Spikes were scattered all around the opposing team's feet!");
+        MESSAGE("Wobbuffet's Air Balloon popped!");
+    }
+}