layout test

src/assets/Assets.cpp

@@ -87,6 +87,9 @@ void Assets::extend(const Assets& assets) {
     for (auto entry : assets.atlases) {
         atlases[entry.first] = entry.second;
     }
+	for (auto entry : assets.layouts) {
+		layouts[entry.first] = entry.second;
+	}
     animations.clear();
 	for (auto entry : assets.animations) {
 		animations.emplace_back(entry);