From 5c2bc9bd9494bcb37d59ca1ac7eb6dd1faafef67 Mon Sep 17 00:00:00 2001
From: Victor Giers <mail@victorgiers.com>
Date: Sat, 2 May 2026 03:47:59 +0200
Subject: [PATCH] Support foliage layers in project scene creation and validate
 layer enabled status

---
 src/document/scene-document.ts | 9 +++++++--
 src/foliage/foliage.ts         | 4 ++++
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/document/scene-document.ts b/src/document/scene-document.ts
index 017c9957..40675ba8 100644
--- a/src/document/scene-document.ts
+++ b/src/document/scene-document.ts
@@ -270,7 +270,12 @@ export function createEmptyProjectScene(
   overrides: Partial<
     Pick<
       ProjectScene,
-      "id" | "name" | "loadingScreen" | "editorPreferences" | "world"
+      | "id"
+      | "name"
+      | "loadingScreen"
+      | "editorPreferences"
+      | "world"
+      | "foliageLayers"
     >
   > = {}
 ): ProjectScene {
@@ -286,7 +291,7 @@ export function createEmptyProjectScene(
     world: overrides.world ?? createDefaultWorldSettings(),
     brushes: {},
     terrains: {},
-    foliageLayers: createEmptyFoliageLayerRegistry(),
+    foliageLayers: overrides.foliageLayers ?? createEmptyFoliageLayerRegistry(),
     paths: {},
     modelInstances: {},
     entities: {},
diff --git a/src/foliage/foliage.ts b/src/foliage/foliage.ts
index cff395fe..2a4a7554 100644
--- a/src/foliage/foliage.ts
+++ b/src/foliage/foliage.ts
@@ -318,6 +318,10 @@ export function cloneFoliageLayer(layer: FoliageLayer): FoliageLayer {
     );
   }
 
+  if (typeof layer.enabled !== "boolean") {
+    throw new Error("Foliage layer enabled must be a boolean.");
+  }
+
   return {
     id: normalizeNonEmptyString(layer.id, "Foliage layer id"),
     name: normalizeNonEmptyString(layer.name, "Foliage layer name"),