feat: initialize project with core dependencies and game entry point

node_modules/three/examples/jsm/loaders/XYZLoader.js

@@ -0,0 +1,143 @@
+import {
+	BufferGeometry,
+	Color,
+	FileLoader,
+	Float32BufferAttribute,
+	Loader,
+	SRGBColorSpace
+} from 'three';
+
+/**
+ * A loader for the XYZ format.
+ *
+ * XYZ is a very simple format for storing point clouds. The layouts
+ * `XYZ` (points) and `XYZRGB` (points + colors) are supported.
+ *
+ * ```js
+ * const loader = new XYZLoader();
+ * const geometry = await loader.loadAsync( 'models/xyz/helix_201.xyz' );
+ * geometry.center();
+ *
+ * const vertexColors = ( geometry.hasAttribute( 'color' ) === true );
+ * const material = new THREE.PointsMaterial( { size: 0.1, vertexColors: vertexColors } );
+ *
+ * const points = new THREE.Points( geometry, material );
+ * scene.add( points );
+ * ```
+ *
+ * @augments Loader
+ * @three_import import { XYZLoader } from 'three/addons/loaders/XYZLoader.js';
+ */
+class XYZLoader extends Loader {
+
+	/**
+	 * Starts loading from the given URL and passes the loaded XYZ asset
+	 * to the `onLoad()` callback.
+	 *
+	 * @param {string} url - The path/URL of the file to be loaded. This can also be a data URI.
+	 * @param {function(BufferGeometry)} onLoad - Executed when the loading process has been finished.
+	 * @param {onProgressCallback} onProgress - Executed while the loading is in progress.
+	 * @param {onErrorCallback} onError - Executed when errors occur.
+	 */
+	load( url, onLoad, onProgress, onError ) {
+
+		const scope = this;
+
+		const loader = new FileLoader( this.manager );
+		loader.setPath( this.path );
+		loader.setRequestHeader( this.requestHeader );
+		loader.setWithCredentials( this.withCredentials );
+		loader.load( url, function ( text ) {
+
+			try {
+
+				onLoad( scope.parse( text ) );
+
+			} catch ( e ) {
+
+				if ( onError ) {
+
+					onError( e );
+
+				} else {
+
+					console.error( e );
+
+				}
+
+				scope.manager.itemError( url );
+
+			}
+
+		}, onProgress, onError );
+
+	}
+
+	/**
+	 * Parses the given XYZ data and returns the resulting geometry.
+	 *
+	 * @param {string} text - The raw XYZ data as a string.
+	 * @return {BufferGeometry} The geometry representing the point cloud.
+	 */
+	parse( text ) {
+
+		const lines = text.split( '\n' );
+
+		const vertices = [];
+		const colors = [];
+		const color = new Color();
+
+		for ( let line of lines ) {
+
+			line = line.trim();
+
+			if ( line.charAt( 0 ) === '#' ) continue; // skip comments
+
+			const lineValues = line.split( /\s+/ );
+
+			if ( lineValues.length === 3 ) {
+
+				// XYZ
+
+				vertices.push( parseFloat( lineValues[ 0 ] ) );
+				vertices.push( parseFloat( lineValues[ 1 ] ) );
+				vertices.push( parseFloat( lineValues[ 2 ] ) );
+
+			}
+
+			if ( lineValues.length === 6 ) {
+
+				// XYZRGB
+
+				vertices.push( parseFloat( lineValues[ 0 ] ) );
+				vertices.push( parseFloat( lineValues[ 1 ] ) );
+				vertices.push( parseFloat( lineValues[ 2 ] ) );
+
+				const r = parseFloat( lineValues[ 3 ] ) / 255;
+				const g = parseFloat( lineValues[ 4 ] ) / 255;
+				const b = parseFloat( lineValues[ 5 ] ) / 255;
+
+				color.setRGB( r, g, b, SRGBColorSpace );
+
+				colors.push( color.r, color.g, color.b );
+
+			}
+
+		}
+
+		const geometry = new BufferGeometry();
+		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+
+		if ( colors.length > 0 ) {
+
+			geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
+
+		}
+
+		return geometry;
+
+	}
+
+}
+
+export { XYZLoader };