feat: initialize project with core dependencies and game entry point

node_modules/three/examples/jsm/environments/DebugEnvironment.js

@@ -0,0 +1,102 @@
+import {
+	BackSide,
+	BoxGeometry,
+	Mesh,
+	MeshLambertMaterial,
+	MeshStandardMaterial,
+	PointLight,
+	Scene,
+} from 'three';
+
+/**
+ * This class represents a scene with a very basic room setup that can be used as
+ * input for {@link PMREMGenerator#fromScene}. The resulting PMREM represents the room's
+ * lighting and can be used for Image Based Lighting by assigning it to {@link Scene#environment}
+ * or directly as an environment map to PBR materials.
+ *
+ * This class uses a simple room setup and should only be used for development purposes.
+ * A more appropriate setup for production is {@link RoomEnvironment}.
+ *
+ * ```js
+ * const environment = new DebugEnvironment();
+ * const pmremGenerator = new THREE.PMREMGenerator( renderer );
+ *
+ * const envMap = pmremGenerator.fromScene( environment ).texture;
+ * scene.environment = envMap;
+ * ```
+ *
+ * @augments Scene
+ * @three_import import { DebugEnvironment } from 'three/addons/environments/DebugEnvironment.js';
+ */
+class DebugEnvironment extends Scene {
+
+	/**
+	 * Constructs a new debug environment.
+	 */
+	constructor() {
+
+		super();
+
+		const geometry = new BoxGeometry();
+		geometry.deleteAttribute( 'uv' );
+		const roomMaterial = new MeshStandardMaterial( { metalness: 0, side: BackSide } );
+		const room = new Mesh( geometry, roomMaterial );
+		room.scale.setScalar( 10 );
+		this.add( room );
+
+		const mainLight = new PointLight( 0xffffff, 50, 0, 2 );
+		this.add( mainLight );
+
+		const material1 = new MeshLambertMaterial( { color: 0xff0000, emissive: 0xffffff, emissiveIntensity: 10 } );
+
+		const light1 = new Mesh( geometry, material1 );
+		light1.position.set( - 5, 2, 0 );
+		light1.scale.set( 0.1, 1, 1 );
+		this.add( light1 );
+
+		const material2 = new MeshLambertMaterial( { color: 0x00ff00, emissive: 0xffffff, emissiveIntensity: 10 } );
+
+		const light2 = new Mesh( geometry, material2 );
+		light2.position.set( 0, 5, 0 );
+		light2.scale.set( 1, 0.1, 1 );
+		this.add( light2 );
+
+		const material3 = new MeshLambertMaterial( { color: 0x0000ff, emissive: 0xffffff, emissiveIntensity: 10 } );
+
+		const light3 = new Mesh( geometry, material3 );
+		light3.position.set( 2, 1, 5 );
+		light3.scale.set( 1.5, 2, 0.1 );
+		this.add( light3 );
+
+	}
+
+	/**
+	 * Frees internal resources. This method should be called
+	 * when the environment is no longer required.
+	 */
+	dispose() {
+
+		const resources = new Set();
+
+		this.traverse( ( object ) => {
+
+			if ( object.isMesh ) {
+
+				resources.add( object.geometry );
+				resources.add( object.material );
+
+			}
+
+		} );
+
+		for ( const resource of resources ) {
+
+			resource.dispose();
+
+		}
+
+	}
+
+}
+
+export { DebugEnvironment };