From bc6bbb1bc5a89ae1f0a5b7f87dad2be52cb4c42b Mon Sep 17 00:00:00 2001
From: FosterProgramming <jamiefosterandco@gmail.com>
Date: Tue, 17 Feb 2026 13:54:36 +0100
Subject: [PATCH] Make sure grass effect palette ignore fog when time blended
 (#9235)

---
 include/field_effect_helpers.h |  2 ++
 src/field_effect.c             | 10 +++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/include/field_effect_helpers.h b/include/field_effect_helpers.h
index 65dce3dfda..7f772c0c6c 100644
--- a/include/field_effect_helpers.h
+++ b/include/field_effect_helpers.h
@@ -43,4 +43,6 @@ void UpdateSparkleFieldEffect(struct Sprite *sprite);
 void SetSpriteInvisible(u8 spriteId);
 void ShowWarpArrowSprite(u8 spriteId, u8 direction, s16 x, s16 y);
 
+u32 FldEff_TallGrass(void);
+
 #endif //GUARD_FIELD_EFFECT_HELPERS_H
diff --git a/src/field_effect.c b/src/field_effect.c
index 9127e6b0ea..14194c8ac2 100644
--- a/src/field_effect.c
+++ b/src/field_effect.c
@@ -803,14 +803,22 @@ void FieldEffectScript_LoadTiles(u8 **script)
     (*script) += 4;
 }
 
+static bool32 ShouldFieldEffectBeFogBlended(u8 *script)
+{
+    u32 ptr = FieldEffectScript_ReadWord(&script);
+    if (ptr == (u32)FldEff_TallGrass)
+        return FALSE;
+    return TRUE;
+}
+
 void FieldEffectScript_LoadFadedPalette(u8 **script)
 {
     struct SpritePalette *palette = (struct SpritePalette *)FieldEffectScript_ReadWord(script);
     u32 paletteSlot = LoadSpritePalette(palette);
     (*script) += 4;
     SetPaletteColorMapType(paletteSlot + 16, T1_READ_8(*script));
-    UpdateSpritePaletteWithWeather(paletteSlot, TRUE);
     (*script)++;
+    UpdateSpritePaletteWithWeather(paletteSlot, ShouldFieldEffectBeFogBlended(*script));
 }
 
 void FieldEffectScript_LoadPalette(u8 **script)