but it failed check for rototiller

asm/macros/battle_script.inc

@@ -1776,6 +1776,16 @@
 	.macro pickpocketsteal
 	various 0, VARIOUS_PICKPOCKET
 	.endm
+	
+	.macro getrototillertargets ptr:req
+	various BS_ATTACKER, VARIOUS_GET_ROTOTILLER_TARGETS
+	.4byte \ptr
+	.endm
+	
+	.macro jumpifnotrototilleraffected battler:req, ptr:req
+	various \battler, VARIOUS_JUMP_IF_NOT_ROTOTILLER_AFFECTED
+	.4byte \ptr
+	.endm
 
 @ helpful macros
 	.macro setstatchanger stat:req, stages:req, down:req

data/battle_scripts_1.s

@@ -814,27 +814,28 @@ BattleScript_FlowerShieldMoveTargetEnd:
 	moveendto MOVEEND_NEXT_TARGET
 	jumpifnexttargetvalid BattleScript_FlowerShieldLoop
 	end
+	
+BattleScript_RototillerRet::
+	
+	return
 
 BattleScript_EffectRototiller:
 	attackcanceler
 	attackstring
 	ppreduce
-	selectfirstvalidtarget
+	getrototillertargets BattleScript_ButItFailed
-BattleScript_RototillerLoop:
+	@ at least one battler is affected
-	movevaluescleanup
-	jumpifnotgrounded BS_TARGET, BattleScript_RototillerNoEffect
-	jumpiftype BS_TARGET, TYPE_GRASS, BattleScript_RototillerLoop2
-BattleScript_RototillerNoEffect:
-	pause B_WAIT_TIME_SHORT
-	printstring STRINGID_NOEFFECTONTARGET
-	waitmessage B_WAIT_TIME_LONG
-	goto BattleScript_RototillerMoveTargetEnd
-BattleScript_RototillerLoop2:
-	jumpifstat BS_TARGET, CMP_LESS_THAN, STAT_ATK, MAX_STAT_STAGE, BattleScript_RototillerDoMoveAnim
-	jumpifstat BS_TARGET, CMP_EQUAL, STAT_SPATK, MAX_STAT_STAGE, BattleScript_RototillerCantRaiseMultipleStats
-BattleScript_RototillerDoMoveAnim::
 	attackanimation
 	waitanimation
+	savetarget
+	setbyte gBattlerTarget, 0
+BattleScript_RototillerLoop:
+	movevaluescleanup
+	jumpifstat BS_TARGET, CMP_LESS_THAN, STAT_ATK, MAX_STAT_STAGE, BattleScript_RototillerCheckAffected
+	jumpifstat BS_TARGET, CMP_EQUAL, STAT_SPATK, MAX_STAT_STAGE, BattleScript_RototillerCantRaiseMultipleStats
+BattleScript_RototillerCheckAffected:
+	jumpifnotrototilleraffected BS_TARGET, BattleScript_RototillerNoEffect
+BattleScript_RototillerAffected:
 	setbyte sSTAT_ANIM_PLAYED, FALSE
 	playstatchangeanimation BS_TARGET, BIT_ATK | BIT_SPATK, 0
 	setstatchanger STAT_ATK, 1, FALSE
@@ -850,13 +851,22 @@ BattleScript_RototillerTrySpAtk::
 	waitmessage B_WAIT_TIME_LONG
 BattleScript_RototillerMoveTargetEnd:
 	moveendto MOVEEND_NEXT_TARGET
-	jumpifnexttargetvalid BattleScript_RototillerLoop
+	addbyte gBattlerTarget, 1
+	jumpifbytenotequal gBattlerTarget, gBattlersCount, BattleScript_RototillerLoop
 	end
+
 BattleScript_RototillerCantRaiseMultipleStats:
+	copybyte gBattlerAttacker, gBattlerTarget
 	printstring STRINGID_STATSWONTINCREASE2
 	waitmessage B_WAIT_TIME_LONG
 	goto BattleScript_RototillerMoveTargetEnd
 
+BattleScript_RototillerNoEffect:
+	pause B_WAIT_TIME_SHORT
+	printstring STRINGID_NOEFFECTONTARGET
+	waitmessage B_WAIT_TIME_LONG
+	goto BattleScript_RototillerMoveTargetEnd
+
 BattleScript_EffectBestow:
 	attackcanceler
 	accuracycheck BattleScript_PrintMoveMissed, NO_ACC_CALC_CHECK_LOCK_ON

include/battle.h

@@ -169,6 +169,7 @@ struct SpecialStatus
     u8 instructedChosenTarget:3;
     u8 berryReduced:1;
     u8 gemBoost:1;
+    u8 rototillerAffected:1;  // to be affected by rototiller
     u8 gemParam;
     u8 damagedMons:4; // Mons that have been damaged directly by using a move, includes substitute.
     u8 dancerUsedMove:1;

include/constants/battle_script_commands.h

@@ -174,6 +174,8 @@
 #define VARIOUS_TOTEM_BOOST                     103
 #define VARIOUS_TRY_ACTIVATE_GRIM_NEIGH         104
 #define VARIOUS_MOVEEND_ITEM_EFFECTS            105
+#define VARIOUS_GET_ROTOTILLER_TARGETS          106
+#define VARIOUS_JUMP_IF_NOT_ROTOTILLER_AFFECTED 107
 
 // Cmd_manipulatedamage
 #define DMG_CHANGE_SIGN            0

src/battle_script_commands.c

@@ -7246,6 +7246,21 @@ static u32 GetHighestStatId(u32 battlerId)
     return highestId;
 }
 
+static bool32 IsRototillerAffected(u32 battlerId)
+{
+    if (!IsBattlerAlive(battlerId))
+        return FALSE;
+    if (!IsBattlerGrounded(battlerId))
+        return FALSE;   // Only grounded battlers affected
+    if (!IS_BATTLER_OF_TYPE(battlerId, TYPE_GRASS))
+        return FALSE;   // Only grass types affected
+    if (gStatuses3[battlerId] & STATUS3_SEMI_INVULNERABLE)
+        return FALSE;   // Rototiller doesn't affected semi-invulnerable battlers
+    //if (!CompareStat(battlerId, STAT_ATK, MAX_STAT_STAGE, CMP_LESS_THAN) && !CompareStat(battlerId, STAT_SPATK, MAX_STAT_STAGE, CMP_LESS_THAN))
+        //return FALSE;   // Battler unaffected if atk and spatk are maxed
+    return TRUE;
+}
+
 static void Cmd_various(void)
 {
     struct Pokemon *mon;
@@ -8498,6 +8513,36 @@ static void Cmd_various(void)
         if (ItemBattleEffects(1, gActiveBattler, FALSE))
             return;
         break;
+    case VARIOUS_GET_ROTOTILLER_TARGETS:
+        // Gets the battlers to be affected by rototiller. If there are none, print 'But it failed!'
+        {
+            u32 count = 0;
+            for (i = 0; i < gBattlersCount; i++)
+            {
+                if (IsRototillerAffected(i))
+                {
+                    gSpecialStatuses[i].rototillerAffected = 1;
+                    count++;
+                }
+            }
+            
+            if (count == 0)
+                gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 3);   // Rototiller fails
+            else
+                gBattlescriptCurrInstr += 7;
+        }
+        return;
+    case VARIOUS_JUMP_IF_NOT_ROTOTILLER_AFFECTED:
+        if (gSpecialStatuses[gActiveBattler].rototillerAffected)
+        {
+            gSpecialStatuses[gActiveBattler].rototillerAffected = 0;
+            gBattlescriptCurrInstr += 7;
+        }
+        else
+        {
+            gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 3);   // Unaffected by rototiller - print STRINGID_NOEFFECTONTARGET
+        }
+        return;
     }
 
     gBattlescriptCurrInstr += 3;