Shubh Rai - JS BootCamp Submission

projects/shubh/PointerLockControls.js

@@ -0,0 +1,156 @@
+/**
+ * @author mrdoob / http://mrdoob.com/
+ * @author Mugen87 / https://github.com/Mugen87 
+ */
+
+THREE.PointerLockControls = function ( camera, domElement ) {
+
+	if ( domElement === undefined ) {
+
+		console.warn( 'THREE.PointerLockControls: The second parameter "domElement" is now mandatory.' );
+		domElement = document.body;
+
+	}
+
+	this.domElement = domElement;
+	this.isLocked = false;
+
+	//
+	// internals
+	//
+
+	var scope = this;
+
+	var changeEvent = { type: 'change' };
+	var lockEvent = { type: 'lock' };
+	var unlockEvent = { type: 'unlock' };
+
+	var euler = new THREE.Euler( 0, 0, 0, 'YXZ' );
+
+	var PI_2 = Math.PI / 2;
+
+	var vec = new THREE.Vector3();
+
+	function onMouseMove( event ) {
+
+		if ( scope.isLocked === false ) return;
+
+		var movementX = event.movementX || event.mozMovementX || event.webkitMovementX || 0;
+		var movementY = event.movementY || event.mozMovementY || event.webkitMovementY || 0;
+
+		euler.setFromQuaternion( camera.quaternion );
+
+		euler.y -= movementX * 0.002;
+		euler.x -= movementY * 0.002;
+
+		euler.x = Math.max( - PI_2, Math.min( PI_2, euler.x ) );
+
+		camera.quaternion.setFromEuler( euler );
+
+		scope.dispatchEvent( changeEvent );
+
+	}
+
+	function onPointerlockChange() {
+
+		if ( document.pointerLockElement === scope.domElement ) {
+
+			scope.dispatchEvent( lockEvent );
+
+			scope.isLocked = true;
+
+		} else {
+
+			scope.dispatchEvent( unlockEvent );
+
+			scope.isLocked = false;
+
+		}
+
+	}
+
+	function onPointerlockError() {
+
+		console.error( 'THREE.PointerLockControls: Unable to use Pointer Lock API' );
+
+	}
+
+	this.connect = function () {
+
+		document.addEventListener( 'mousemove', onMouseMove, false );
+		document.addEventListener( 'pointerlockchange', onPointerlockChange, false );
+		document.addEventListener( 'pointerlockerror', onPointerlockError, false );
+
+	};
+
+	this.disconnect = function () {
+
+		document.removeEventListener( 'mousemove', onMouseMove, false );
+		document.removeEventListener( 'pointerlockchange', onPointerlockChange, false );
+		document.removeEventListener( 'pointerlockerror', onPointerlockError, false );
+
+	};
+
+	this.dispose = function () {
+
+		this.disconnect();
+
+	};
+
+	this.getObject = function () { // retaining this method for backward compatibility
+
+		return camera;
+
+	};
+
+	this.getDirection = function () {
+
+		var direction = new THREE.Vector3( 0, 0, - 1 );
+
+		return function ( v ) {
+
+			return vec.copy( direction ).applyQuaternion( camera.quaternion );
+
+		};
+
+	}();
+
+	this.moveForward = function ( distance ) {
+
+		// move forward parallel to the xz-plane
+		// assumes camera.up is y-up
+
+		vec.setFromMatrixColumn( camera.matrix, 0 );
+
+		vec.crossVectors( camera.up, vec );
+
+		camera.position.addScaledVector( vec, distance );
+
+	};
+
+	this.moveRight = function ( distance ) {
+
+		vec.setFromMatrixColumn( camera.matrix, 0 );
+
+		camera.position.addScaledVector( vec, distance );
+
+	};
+
+	this.lock = function () {
+
+		this.domElement.requestPointerLock();
+
+	};
+
+	this.unlock = function () {
+
+		document.exitPointerLock();
+
+	};
+
+	this.connect();
+
+};
+
+THREE.PointerLockControls.prototype = Object.create( THREE.EventDispatcher.prototype );
+THREE.PointerLockControls.prototype.constructor = THREE.PointerLockControls;