From 72c7e9c194d453bd6ac9d1ad567463bc6ae6a93c Mon Sep 17 00:00:00 2001
From: Xavion3 <xavion333@gmail.com>
Date: Mon, 27 May 2024 09:14:38 +1000
Subject: [PATCH] Prevent duplicate evolutions crashing the game (#1416)

---
 src/data/pokemon-species.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/data/pokemon-species.ts b/src/data/pokemon-species.ts
index e809893aedc..144c03d1d5d 100644
--- a/src/data/pokemon-species.ts
+++ b/src/data/pokemon-species.ts
@@ -736,7 +736,7 @@ export default class PokemonSpecies extends PokemonSpeciesForm implements Locali
     const allEvolvingPokemon = Object.keys(pokemonEvolutions);
     for (const p of allEvolvingPokemon) {
       for (const e of pokemonEvolutions[p]) {
-        if (e.speciesId === this.speciesId && (!this.forms.length || !e.evoFormKey || e.evoFormKey === this.forms[this.formIndex].formKey)) {
+        if (e.speciesId === this.speciesId && (!this.forms.length || !e.evoFormKey || e.evoFormKey === this.forms[this.formIndex].formKey) && prevolutionLevels.every(pe => pe[0] !== parseInt(p))) {
           const speciesId = parseInt(p) as Species;
           const level = e.level;
           prevolutionLevels.push([ speciesId, level ]);