From e73dbe98615588af8778a7a12a2eb259e6b9df99 Mon Sep 17 00:00:00 2001
From: Mikhail Shueb <mikhail.shueb@tecnico.ulisboa.pt>
Date: Fri, 7 Mar 2025 17:31:34 +0000
Subject: [PATCH] [Bug] Chilly Reception no longer replaces Legendary Weather
 (Primordial Sea, Desolate Land, Delta Stream) (#5484)

Co-authored-by: NightKev <34855794+DayKev@users.noreply.github.com>
---
 src/data/weather.ts | 12 ++++++++++++
 src/field/arena.ts  |  8 +++++++-
 2 files changed, 19 insertions(+), 1 deletion(-)

diff --git a/src/data/weather.ts b/src/data/weather.ts
index 7de4d93b398..587d46f0772 100644
--- a/src/data/weather.ts
+++ b/src/data/weather.ts
@@ -205,6 +205,18 @@ export function getWeatherClearMessage(weatherType: WeatherType): string | null
   return null;
 }
 
+export function getLegendaryWeatherContinuesMessage(weatherType: WeatherType): string | null {
+  switch (weatherType) {
+    case WeatherType.HARSH_SUN:
+      return i18next.t("weather:harshSunContinueMessage");
+    case WeatherType.HEAVY_RAIN:
+      return i18next.t("weather:heavyRainContinueMessage");
+    case WeatherType.STRONG_WINDS:
+      return i18next.t("weather:strongWindsContinueMessage");
+  }
+  return null;
+}
+
 export function getWeatherBlockMessage(weatherType: WeatherType): string {
   switch (weatherType) {
     case WeatherType.HARSH_SUN:
diff --git a/src/field/arena.ts b/src/field/arena.ts
index fe3e205bd2d..08ba3542fc2 100644
--- a/src/field/arena.ts
+++ b/src/field/arena.ts
@@ -5,7 +5,7 @@ import type { Constructor } from "#app/utils";
 import * as Utils from "#app/utils";
 import type PokemonSpecies from "#app/data/pokemon-species";
 import { getPokemonSpecies } from "#app/data/pokemon-species";
-import { getTerrainClearMessage, getTerrainStartMessage, getWeatherClearMessage, getWeatherStartMessage, Weather } from "#app/data/weather";
+import { getTerrainClearMessage, getTerrainStartMessage, getWeatherClearMessage, getWeatherStartMessage, getLegendaryWeatherContinuesMessage, Weather } from "#app/data/weather";
 import { CommonAnim } from "#app/data/battle-anims";
 import type { Type } from "#enums/type";
 import type Move from "#app/data/move";
@@ -274,6 +274,12 @@ export class Arena {
 
     const oldWeatherType = this.weather?.weatherType || WeatherType.NONE;
 
+    if (this.weather?.isImmutable() && ![ WeatherType.HARSH_SUN, WeatherType.HEAVY_RAIN, WeatherType.STRONG_WINDS, WeatherType.NONE ].includes(weather)) {
+      globalScene.unshiftPhase(new CommonAnimPhase(undefined, undefined, CommonAnim.SUNNY + (oldWeatherType - 1), true));
+      globalScene.queueMessage(getLegendaryWeatherContinuesMessage(oldWeatherType)!);
+      return false;
+    }
+
     this.weather = weather ? new Weather(weather, hasPokemonSource ? 5 : 0) : null;
     this.eventTarget.dispatchEvent(new WeatherChangedEvent(oldWeatherType, this.weather?.weatherType!, this.weather?.turnsLeft!)); // TODO: is this bang correct?