From 53370d42129c8d42bd5f7f272c6f6ca5ea43d11f Mon Sep 17 00:00:00 2001
From: Victor Giers <mail@victorgiers.com>
Date: Wed, 13 May 2026 00:49:06 +0200
Subject: [PATCH] Use selected terrain's layer count for paint layer index
 calculation

---
 src/app/App.tsx | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/app/App.tsx b/src/app/App.tsx
index 4c43af33..7453c49a 100644
--- a/src/app/App.tsx
+++ b/src/app/App.tsx
@@ -3379,7 +3379,8 @@ export function App({
             terrainId: selectedTerrain.id,
             tool: "paint",
             layerIndex: clampTerrainPaintLayerIndex(
-              activeTerrainPaintLayerIndex
+              activeTerrainPaintLayerIndex,
+              selectedTerrain.layers.length
             ),
             radius: terrainBrushSettings.radius,
             strength: terrainBrushSettings.strength,
@@ -3405,7 +3406,8 @@ export function App({
               falloff: terrainBrushSettings.falloff
             };
   const resolvedTerrainPaintLayerIndex = clampTerrainPaintLayerIndex(
-    activeTerrainPaintLayerIndex
+    activeTerrainPaintLayerIndex,
+    selectedTerrain?.layers.length
   );
   const selectedTerrainActivePaintLayer =
     selectedTerrain?.layers[resolvedTerrainPaintLayerIndex] ?? null;