Disguise ability (#258)

* Protection from attacks.

* Changes form when Busting Disguise.

* Ability changing moves set to fail.

- Simple Beam and Worry Seed now fail if the target has Disguise.
- Role Play and Skill Swap now fail if either the attacker or the target have Disguise.

* Disguise no longer triggers when transformed.

* Mimikyu reverts to Disguised

* No longer blocks from entry hazards and weather.

* Applied review changes

* Oops, new line

* yeah

data/battle_scripts_1.s

@@ -5903,6 +5903,19 @@ BattleScript_StanceChangeActivates::
 	waitanimation
 	handleformchange BS_ATTACKER, 2 
 	return
+	
+BattleScript_DisguiseBustedActivates::
+	pause 0x5
+	copybyte gBattlerAbility, gBattlerTarget
+	call BattleScript_AbilityPopUp
+	printstring STRINGID_EMPTYSTRING3
+	waitmessage 0x1
+	handleformchange BS_TARGET, 0
+	handleformchange BS_TARGET, 1
+	playanimation BS_TARGET, B_ANIM_FORM_CHANGE, NULL
+	waitanimation
+	handleformchange BS_TARGET, 2 
+	return
 
 BattleScript_IllusionOff::
 	spriteignore0hp TRUE

include/battle_script_commands.h

@@ -14,6 +14,7 @@ void BufferMoveToLearnIntoBattleTextBuff2(void);
 void HandleBattleWindow(u8 xStart, u8 yStart, u8 xEnd, u8 yEnd, u8 flags);
 bool8 UproarWakeUpCheck(u8 battlerId);
 bool32 DoesSubstituteBlockMove(u8 battlerAtk, u8 battlerDef, u32 move);
+bool32 DoesDisguiseBlockMove(u8 battlerAtk, u8 battlerDef, u32 move);
 bool32 CanUseLastResort(u8 battlerId);
 u32 IsFlowerVeilProtected(u32 battler);
 u32 IsLeafGuardProtected(u32 battler);

include/battle_scripts.h

@@ -329,5 +329,6 @@ extern const u8 BattleScript_IllusionOff[];
 extern const u8 BattleScript_DancerActivates[];
 extern const u8 BattleScript_AftermathDmg[];
 extern const u8 BattleScript_StanceChangeActivates[];
+extern const u8 BattleScript_DisguiseBustedActivates[];
 
 #endif // GUARD_BATTLE_SCRIPTS_H

include/constants/battle_config.h

@@ -11,6 +11,8 @@
 #define SPECIES_GENESECT 0
 #define SPECIES_AEGISLASH 0
 #define SPECIES_AEGISLASH_BLADE 10000
+#define SPECIES_MIMIKYU 0
+#define SPECIES_MIMIKYU_BUSTED 10001
 
 // Items with peculiar battle effects. Remove them if they're properly placed in constant/items.h
 #define ITEM_GRISEOUS_ORB 0

src/battle_script_commands.c

@@ -1532,6 +1532,8 @@ static void Cmd_adjustdamage(void)
 
     if (DoesSubstituteBlockMove(gBattlerAttacker, gBattlerTarget, gCurrentMove))
         goto END;
+    if (DoesDisguiseBlockMove(gBattlerAttacker, gBattlerTarget, gCurrentMove))
+        goto END;
     if (gBattleMons[gBattlerTarget].hp > gBattleMoveDamage)
         goto END;
 
@@ -1709,17 +1711,9 @@ static void Cmd_healthbarupdate(void)
         {
             PrepareStringBattle(STRINGID_SUBSTITUTEDAMAGED, gActiveBattler);
         }
-        else
+        else if (!DoesDisguiseBlockMove(gBattlerAttacker, gActiveBattler, gCurrentMove))
         {
-            s16 healthValue;
-
-            s32 currDmg = gBattleMoveDamage;
-            s32 maxPossibleDmgValue = 10000; // not present in R/S, ensures that huge damage values don't change sign
-
-            if (currDmg <= maxPossibleDmgValue)
-                healthValue = currDmg;
-            else
-                healthValue = maxPossibleDmgValue;
+            s16 healthValue = min(gBattleMoveDamage, 10000); // Max damage (10000) not present in R/S, ensures that huge damage values don't change sign
 
             BtlController_EmitHealthBarUpdate(0, healthValue);
             MarkBattlerForControllerExec(gActiveBattler);
@@ -1774,6 +1768,12 @@ static void Cmd_datahpupdate(void)
                 return;
             }
         }
+        else if (DoesDisguiseBlockMove(gBattlerAttacker, gActiveBattler, gCurrentMove))
+        {
+            gBattleMons[gActiveBattler].species = SPECIES_MIMIKYU_BUSTED;
+            BattleScriptPush(gBattlescriptCurrInstr + 2);
+            gBattlescriptCurrInstr = BattleScript_DisguiseBustedActivates;
+        }
         else
         {
             gHitMarker &= ~(HITMARKER_IGNORE_SUBSTITUTE);
@@ -7132,6 +7132,7 @@ static void Cmd_various(void)
         case ABILITY_SIMPLE:
         case ABILITY_TRUANT:
         case ABILITY_STANCE_CHANGE:
+        case ABILITY_DISGUISE:
         case ABILITY_MULTITYPE:
             gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 3);
             break;
@@ -10570,16 +10571,18 @@ static void Cmd_tryswapitems(void) // trick
 
 static void Cmd_trycopyability(void) // role play
 {
-    if (gBattleMons[gBattlerTarget].ability != 0
-        && gBattleMons[gBattlerTarget].ability != ABILITY_WONDER_GUARD)
+    switch (gBattleMons[gBattlerTarget].ability)
     {
-        gBattleMons[gBattlerAttacker].ability = gBattleMons[gBattlerTarget].ability;
-        gLastUsedAbility = gBattleMons[gBattlerTarget].ability;
-        gBattlescriptCurrInstr += 5;
-    }
-    else
-    {
-        gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 1);
+        case ABILITY_NONE:
+        case ABILITY_WONDER_GUARD:
+        case ABILITY_DISGUISE:
+            gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 1);
+            break;
+        default:
+            gBattleMons[gBattlerAttacker].ability = gBattleMons[gBattlerTarget].ability;
+            gLastUsedAbility = gBattleMons[gBattlerTarget].ability;
+            gBattlescriptCurrInstr += 5;
+            break;
     }
 }
 
@@ -10718,14 +10721,28 @@ static void Cmd_setroom(void)
 
 static void Cmd_tryswapabilities(void) // skill swap
 {
-    if ((gBattleMons[gBattlerAttacker].ability == 0
-         && gBattleMons[gBattlerTarget].ability == 0)
-     || gBattleMons[gBattlerAttacker].ability == ABILITY_WONDER_GUARD
-     || gBattleMons[gBattlerTarget].ability == ABILITY_WONDER_GUARD
-     || gMoveResultFlags & MOVE_RESULT_NO_EFFECT)
-     {
-         gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 1);
-     }
+    switch (gBattleMons[gBattlerAttacker].ability)
+    {
+    case ABILITY_NONE:
+    case ABILITY_WONDER_GUARD:
+    case ABILITY_DISGUISE:
+        gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 1);
+        return;
+    }
+
+    switch (gBattleMons[gBattlerTarget].ability)
+    {
+    case ABILITY_NONE:
+    case ABILITY_WONDER_GUARD:
+    case ABILITY_DISGUISE:
+        gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 1);
+        return;
+    }
+
+    if (!(gMoveResultFlags & MOVE_RESULT_NO_EFFECT))
+    {
+        gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 1);
+    }
     else
     {
         u8 abilityAtk = gBattleMons[gBattlerAttacker].ability;
@@ -11133,6 +11150,17 @@ bool32 DoesSubstituteBlockMove(u8 battlerAtk, u8 battlerDef, u32 move)
         return TRUE;
 }
 
+bool32 DoesDisguiseBlockMove(u8 battlerAtk, u8 battlerDef, u32 move)
+{
+    if (GetBattlerAbility(battlerDef) != ABILITY_DISGUISE
+        || gBattleMons[battlerDef].species != SPECIES_MIMIKYU
+        || gBattleMons[battlerDef].status2 & STATUS2_TRANSFORMED
+        || gBattleMoves[move].power == 0)
+        return FALSE;
+    else
+        return TRUE;
+}
+
 static void Cmd_jumpifsubstituteblocks(void)
 {
     if (DoesSubstituteBlockMove(gBattlerAttacker, gBattlerTarget, gCurrentMove))
@@ -11740,6 +11768,7 @@ static void Cmd_tryworryseed(void)
     case ABILITY_MULTITYPE:
     case ABILITY_TRUANT:
     case ABILITY_STANCE_CHANGE:
+    case ABILITY_DISGUISE:
         gBattlescriptCurrInstr = T1_READ_PTR(gBattlescriptCurrInstr + 1);
         break;
     default:

src/battle_util.c

@@ -6314,6 +6314,7 @@ void UndoFormChange(u32 monId, u32 side)
     static const u16 species[][2] = // changed form id, default form id
     {
         {SPECIES_AEGISLASH_BLADE, SPECIES_AEGISLASH},
+        {SPECIES_MIMIKYU_BUSTED, SPECIES_MIMIKYU},
     };
 
     currSpecies = GetMonData(&party[monId], MON_DATA_SPECIES, NULL);