From 427d528ad5eaaf4205d863327fa007969efe5ed7 Mon Sep 17 00:00:00 2001
From: Sirz Benjie <142067137+SirzBenjie@users.noreply.github.com>
Date: Fri, 7 Feb 2025 02:08:02 -0600
Subject: [PATCH] Fix super-niche edgecase with mega gengar and telekinesis

---
 src/field/pokemon.ts               |  2 +-
 src/test/moves/telekinesis.test.ts | 14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/field/pokemon.ts b/src/field/pokemon.ts
index 8caa78aa7c9..16af8364502 100644
--- a/src/field/pokemon.ts
+++ b/src/field/pokemon.ts
@@ -3234,7 +3234,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
     }
 
     for (const tag of source.summonData.tags) {
-      if (!tag.isBatonPassable) {
+      if (!tag.isBatonPassable || (tag.tagType === BattlerTagType.TELEKINESIS && this.species.speciesId === Species.GENGAR && this.getFormKey() === "mega")) {
         continue;
       }
 
diff --git a/src/test/moves/telekinesis.test.ts b/src/test/moves/telekinesis.test.ts
index 76c0d001f00..ba2bc40a189 100644
--- a/src/test/moves/telekinesis.test.ts
+++ b/src/test/moves/telekinesis.test.ts
@@ -7,6 +7,7 @@ import { MoveResult } from "#app/field/pokemon";
 import GameManager from "#test/utils/gameManager";
 import Phaser from "phaser";
 import { afterEach, beforeAll, beforeEach, describe, it, expect, vi } from "vitest";
+import { BattlerIndex } from "#app/battle";
 
 describe("Moves - Telekinesis", () => {
   let phaserGame: Phaser.Game;
@@ -121,4 +122,17 @@ describe("Moves - Telekinesis", () => {
     expect(enemyOpponent.getTag(BattlerTagType.FLOATING)).toBeUndefined();
     expect(playerPokemon.getLastXMoves()[0].result).toBe(MoveResult.SUCCESS);
   });
+
+  it("should not be baton passed onto a mega gengar", async () => {
+    game.override.moveset([ Moves.BATON_PASS ])
+      .enemyMoveset([ Moves.TELEKINESIS ])
+      .starterForms({ [Species.GENGAR]: 1 });
+
+    await game.classicMode.startBattle([ Species.MAGIKARP, Species.GENGAR ]);
+    game.move.select(Moves.BATON_PASS);
+    game.doSelectPartyPokemon(1);
+    await game.setTurnOrder([ BattlerIndex.ENEMY, BattlerIndex.PLAYER ]);
+    await game.phaseInterceptor.to("BerryPhase");
+    expect(game.scene.getPlayerPokemon()!.getTag(BattlerTagType.TELEKINESIS)).toBeUndefined();
+  });
 });