From bc263cf42a272d298f9efec6232f99fb33c0be17 Mon Sep 17 00:00:00 2001
From: Martin Rosen <mzrosen@umich.edu>
Date: Fri, 26 Apr 2024 18:00:53 -0400
Subject: [PATCH] Implement Gastro Acid

---
 src/data/move.ts | 26 ++++++++++++++++++++++++--
 1 file changed, 24 insertions(+), 2 deletions(-)

diff --git a/src/data/move.ts b/src/data/move.ts
index 4b80908ea54..0c47a236e52 100644
--- a/src/data/move.ts
+++ b/src/data/move.ts
@@ -12,7 +12,7 @@ import * as Utils from "../utils";
 import { WeatherType } from "./weather";
 import { ArenaTagSide, ArenaTrapTag } from "./arena-tag";
 import { ArenaTagType } from "./enums/arena-tag-type";
-import { UnswappableAbilityAbAttr, UncopiableAbilityAbAttr, UnsuppressableAbilityAbAttr, NoTransformAbilityAbAttr, BlockRecoilDamageAttr, BlockOneHitKOAbAttr, IgnoreContactAbAttr, MaxMultiHitAbAttr, applyAbAttrs, BlockNonDirectDamageAbAttr, applyPreSwitchOutAbAttrs, PreSwitchOutAbAttr, applyPostDefendAbAttrs, PostDefendContactApplyStatusEffectAbAttr, MoveAbilityBypassAbAttr, ReverseDrainAbAttr } from "./ability";
+import { UnswappableAbilityAbAttr, UncopiableAbilityAbAttr, UnsuppressableAbilityAbAttr, NoTransformAbilityAbAttr, BlockRecoilDamageAttr, BlockOneHitKOAbAttr, IgnoreContactAbAttr, MaxMultiHitAbAttr, applyAbAttrs, BlockNonDirectDamageAbAttr, applyPreSwitchOutAbAttrs, PreSwitchOutAbAttr, applyPostDefendAbAttrs, PostDefendContactApplyStatusEffectAbAttr, MoveAbilityBypassAbAttr, ReverseDrainAbAttr, SuppressFieldAbilitiesAbAttr } from "./ability";
 import { Abilities } from "./enums/abilities";
 import { allAbilities } from './ability';
 import { PokemonHeldItemModifier } from "../modifier/modifier";
@@ -3530,6 +3530,28 @@ export class SwitchAbilitiesAttr extends MoveEffectAttr {
   }
 }
 
+export class SupressAbilityAttr extends MoveEffectAttr {
+  apply(user: Pokemon, target: Pokemon, move: Move, args: any[]): boolean {
+    if (!super.apply(user, target, move, args))
+      return false;
+
+    if (target.getAbility().hasAttr(SuppressFieldAbilitiesAbAttr)) {
+      user.scene.queueMessage('But it failed!');
+      return false;
+    }
+
+    target.getAbility().attr(SuppressFieldAbilitiesAbAttr);
+
+    user.scene.queueMessage(getPokemonMessage(user, ` neutralized its target's ability!`));
+
+    return true;
+  }
+
+  getCondition(): MoveConditionFunc {
+    return (user, target, move) => !user.getAbility().hasAttr(UnswappableAbilityAbAttr) && !target.getAbility().hasAttr(UnswappableAbilityAbAttr);
+  }
+}
+
 export class TransformAttr extends MoveEffectAttr {
   apply(user: Pokemon, target: Pokemon, move: Move, args: any[]): Promise<boolean> {
     return new Promise(resolve => {
@@ -4734,7 +4756,7 @@ export function initMoves() {
     new SelfStatusMove(Moves.POWER_TRICK, Type.PSYCHIC, -1, 10, -1, 0, 4)
       .unimplemented(),
     new StatusMove(Moves.GASTRO_ACID, Type.POISON, 100, 10, -1, 0, 4)
-      .unimplemented(),
+      .attr(SupressAbilityAttr),
     new StatusMove(Moves.LUCKY_CHANT, Type.NORMAL, -1, 30, -1, 0, 4)
       .attr(AddBattlerTagAttr, BattlerTagType.NO_CRIT, false, false, 5)
       .target(MoveTarget.USER_SIDE)