feat: initialize project with core dependencies and game entry point

node_modules/three/examples/jsm/misc/Gyroscope.js

@@ -0,0 +1,78 @@
+import {
+	Object3D,
+	Quaternion,
+	Vector3
+} from 'three';
+
+const _translationObject = new Vector3();
+const _quaternionObject = new Quaternion();
+const _scaleObject = new Vector3();
+
+const _translationWorld = new Vector3();
+const _quaternionWorld = new Quaternion();
+const _scaleWorld = new Vector3();
+
+/**
+ * A special type of 3D object that takes a position from the scene graph hierarchy
+ * but uses its local rotation as world rotation. It works like real-world gyroscope -
+ * you can move it around using hierarchy while its orientation stays fixed with
+ * respect to the world.
+ *
+ * @augments Object3D
+ * @three_import import { Gyroscope } from 'three/addons/misc/Gyroscope.js';
+ */
+class Gyroscope extends Object3D {
+
+	/**
+	 * Constructs a new gyroscope.
+	 */
+	constructor() {
+
+		super();
+
+	}
+
+	updateMatrixWorld( force ) {
+
+		this.matrixAutoUpdate && this.updateMatrix();
+
+		// update matrixWorld
+
+		if ( this.matrixWorldNeedsUpdate || force ) {
+
+			if ( this.parent !== null ) {
+
+				this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );
+
+				this.matrixWorld.decompose( _translationWorld, _quaternionWorld, _scaleWorld );
+				this.matrix.decompose( _translationObject, _quaternionObject, _scaleObject );
+
+				this.matrixWorld.compose( _translationWorld, _quaternionObject, _scaleWorld );
+
+
+			} else {
+
+				this.matrixWorld.copy( this.matrix );
+
+			}
+
+
+			this.matrixWorldNeedsUpdate = false;
+
+			force = true;
+
+		}
+
+		// update children
+
+		for ( let i = 0, l = this.children.length; i < l; i ++ ) {
+
+			this.children[ i ].updateMatrixWorld( force );
+
+		}
+
+	}
+
+}
+
+export { Gyroscope };