is it ok to add an env map?

index.html

@@ -430,25 +430,36 @@
             
             // Loader
             loader = new THREE.GLTFLoader();
-            
-            // Add lights
-            const ambientLight = new THREE.AmbientLight(0xffffff, 0.6);
-            scene.add(ambientLight);
-            
-            const directionalLight = new THREE.DirectionalLight(0xffffff, 0.8);
-            directionalLight.position.set(10, 20, 15);
-            directionalLight.castShadow = true;
-            directionalLight.shadow.mapSize.width = 2048;
-            directionalLight.shadow.mapSize.height = 2048;
-            directionalLight.shadow.camera.near = 0.5;
-            directionalLight.shadow.camera.far = 50;
-            directionalLight.shadow.camera.left = -20;
-            directionalLight.shadow.camera.right = 20;
-            directionalLight.shadow.camera.top = 20;
-            directionalLight.shadow.camera.bottom = -20;
-            scene.add(directionalLight);
-            
-            // Create ground
+        // Add environment map
+        const envMapLoader = new THREE.CubeTextureLoader();
+        const envMap = envMapLoader.load([
+            'https://threejs.org/examples/textures/cube/SwedishRoyalCastle/px.jpg',
+            'https://threejs.org/examples/textures/cube/SwedishRoyalCastle/nx.jpg',
+            'https://threejs.org/examples/textures/cube/SwedishRoyalCastle/py.jpg',
+            'https://threejs.org/examples/textures/cube/SwedishRoyalCastle/ny.jpg',
+            'https://threejs.org/examples/textures/cube/SwedishRoyalCastle/pz.jpg',
+            'https://threejs.org/examples/textures/cube/SwedishRoyalCastle/nz.jpg'
+        ]);
+        scene.background = envMap;
+        scene.environment = envMap;
+
+        // Add lights
+        const ambientLight = new THREE.AmbientLight(0xffffff, 0.6);
+        scene.add(ambientLight);
+        
+        const directionalLight = new THREE.DirectionalLight(0xffffff, 0.8);
+        directionalLight.position.set(10, 20, 15);
+        directionalLight.castShadow = true;
+        directionalLight.shadow.mapSize.width = 2048;
+        directionalLight.shadow.mapSize.height = 2048;
+        directionalLight.shadow.camera.near = 0.5;
+        directionalLight.shadow.camera.far = 50;
+        directionalLight.shadow.camera.left = -20;
+        directionalLight.shadow.camera.right = 20;
+        directionalLight.shadow.camera.top = 20;
+        directionalLight.shadow.camera.bottom = -20;
+        scene.add(directionalLight);
+// Create ground
             const groundGeometry = new THREE.PlaneGeometry(100, 100);
             const groundMaterial = new THREE.MeshStandardMaterial({ 
                 color: 0x4ade80,