From c675c4789b069a59a087c5982b1951a0b219bbf8 Mon Sep 17 00:00:00 2001
From: kd8lvt <redunderpant@gmail.com>
Date: Sat, 6 Apr 2024 19:34:15 -0400
Subject: [PATCH] Implement Rough Skin

---
 src/data/ability.ts | 32 ++++++++++++++++++++++++++++++--
 1 file changed, 30 insertions(+), 2 deletions(-)

diff --git a/src/data/ability.ts b/src/data/ability.ts
index cb9cd098bb6..09fb8016ed4 100644
--- a/src/data/ability.ts
+++ b/src/data/ability.ts
@@ -5,7 +5,7 @@ import { BattleStat, getBattleStatName } from "./battle-stat";
 import { PokemonHealPhase, ShowAbilityPhase, StatChangePhase } from "../phases";
 import { getPokemonMessage } from "../messages";
 import { Weather, WeatherType } from "./weather";
-import { BattlerTag } from "./battler-tags";
+import { BattlerTag, getBattlerTag } from "./battler-tags";
 import { BattlerTagType } from "./enums/battler-tag-type";
 import { StatusEffect, getStatusEffectDescriptor } from "./status-effect";
 import Move, { AttackMove, MoveCategory, MoveFlags, MoveTarget, RecoilAttr, StatusMoveTypeImmunityAttr, allMoves } from "./move";
@@ -528,6 +528,32 @@ export class PostDefendCritStatChangeAbAttr extends PostDefendAbAttr {
   }
 }
 
+export class PostDefendContactDamageAttackerAbAttr extends PostDefendAbAttr {
+  percentMaxHealthDamage: number;
+  constructor(percentMaxHealthDamage: number) {
+    super();
+    this.percentMaxHealthDamage = percentMaxHealthDamage;
+  }
+  
+  applyPostDefend(pokemon: Pokemon, attacker: Pokemon, move: PokemonMove, hitResult: HitResult, args: any[]): boolean {
+    if (move.getMove().checkFlag(MoveFlags.MAKES_CONTACT, attacker, pokemon)) {
+      attacker.damageAndUpdate(attacker.getMaxHp()*(this.percentMaxHealthDamage),HitResult.EFFECTIVE,false,false,false);
+      return true;
+    }
+    return false;
+  }
+}
+
+export class RoughSkinAbAttr extends PostDefendContactDamageAttackerAbAttr {
+  constructor() {
+    super(1/8);
+  }
+
+  getTriggerMessage(pokemon: Pokemon, ...args: any[]): string {
+    return `${pokemon.name}${(pokemon.name.endsWith('s')?`'`:`'s`)} Rough Skin hurt its attacker!`;
+  }
+}
+
 export class PreAttackAbAttr extends AbAttr {
   applyPreAttack(pokemon: Pokemon, defender: Pokemon, move: PokemonMove, args: any[]): boolean | Promise<boolean> {
     return false;
@@ -2107,7 +2133,9 @@ export function initAbilities() {
       .attr(PostSummonStatChangeAbAttr, BattleStat.ATK, -1),
     new Ability(Abilities.SHADOW_TAG, "Shadow Tag", "This Pokémon steps on the opposing Pokémon's shadow to prevent it from escaping.", 3)
       .attr(ArenaTrapAbAttr),
-    new Ability(Abilities.ROUGH_SKIN, "Rough Skin (N)", "This Pokémon inflicts damage with its rough skin to the attacker on contact.", 3),
+    new Ability(Abilities.ROUGH_SKIN, "Rough Skin", "This Pokémon inflicts damage with its rough skin to the attacker on contact.", 3)
+      .attr(RoughSkinAbAttr)
+      .ignorable(),
     new Ability(Abilities.WONDER_GUARD, "Wonder Guard", "Its mysterious power only lets supereffective moves hit the Pokémon.", 3)
       .attr(NonSuperEffectiveImmunityAbAttr)
       .attr(ProtectAbilityAbAttr)