From bb540b62368f3eec54c9bf4bcc3cafc2c10769ac Mon Sep 17 00:00:00 2001
From: Evan <eroelke@gmail.com>
Date: Sun, 10 Jan 2021 08:58:41 -0700
Subject: [PATCH] fix AI_WeatherHasEffect to handle unknown abilities

---
 src/battle_ai_util.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/battle_ai_util.c b/src/battle_ai_util.c
index 5e7cbadf7..b43599f7b 100644
--- a/src/battle_ai_util.c
+++ b/src/battle_ai_util.c
@@ -1128,10 +1128,18 @@ bool32 DoesBattlerIgnoreAbilityChecks(u16 atkAbility, u16 move)
 
 bool32 AI_WeatherHasEffect(void)
 {
+    u32 i;
     if (AI_THINKING_STRUCT->aiFlags & AI_FLAG_NEGATE_UNAWARE)
-        return FALSE;   // AI doesn't understand ability suppression concept
+        return FALSE;   // AI doesn't understand weather supression (handicap)
     
-    return WEATHER_HAS_EFFECT;
+    // need to manually check since we don't necessarily know opponent ability
+    for (i = 0; i < gBattlersCount; i++)
+    {
+        if (IsBattlerAlive(i)
+          && (AI_GetAbility(i) == ABILITY_AIR_LOCK || AI_GetAbility(i) == ABILITY_CLOUD_NINE)
+            return TRUE;
+    }
+    return FALSE;
 }
 
 bool32 IsAromaVeilProtectedMove(u16 move)