1/**
  2 * Modified from James Baicoianu's example at http://threejs.org/examples/js/controls/FlyControls.js
  3 * @author James Baicoianu / http://www.baicoianu.com/
  4 */
  5
  6THREE.FlyControls = function ( object, domElement ) {
  7	this.object = object;
  8
  9	this.domElement = ( domElement !== undefined ) ? domElement : document;
 10	if ( domElement ) this.domElement.setAttribute( 'tabindex', -1 );
 11
 12	this.movementSpeed = 8.0;
 13	this.rollSpeed = 0.005;
 14
 15	this.dragToLook = false;
 16	this.autoForward = false;
 17
 18	this.tmpQuaternion = new THREE.Quaternion();
 19
 20	this.moveState = { up: 0, down: 0, left: 0, right: 0, forward: 0, back: 0, pitchUp: 0, pitchDown: 0, yawLeft: 0, yawRight: 0, rollLeft: 0, rollRight: 0 };
 21	this.moveVector = new THREE.Vector3( 0, 0, 0 );
 22	this.rotationVector = new THREE.Vector3( 0, 0, 0 );
 23
 24	this.handleEvent = function ( event ) {
 25		if ( typeof this[ event.type ] == 'function' ) {
 26			this[ event.type ]( event );
 27		}
 28	};
 29
 30	this.keydown = function( event ) {
 31
 32		if ( event.altKey ) {
 33			return;
 34		}
 35
 36		//event.preventDefault();
 37
 38		switch ( event.keyCode ) {
 39			case 87: /*W*/ this.moveState.forward = 1; break;
 40			case 83: /*S*/ this.moveState.back = 1; break;
 41
 42			case 65: /*A*/ this.moveState.left = 1; break;
 43			case 68: /*D*/ this.moveState.right = 1; break;
 44
 45			case 82: /*R*/ this.moveState.up = 1; break;
 46			case 70: /*F*/ this.moveState.down = 1; break;
 47
 48			case 38: /*up*/ this.moveState.pitchUp = 1; break;
 49			case 40: /*down*/ this.moveState.pitchDown = 1; break;
 50
 51			case 37: /*left*/ this.moveState.yawLeft = 1; break;
 52			case 39: /*right*/ this.moveState.yawRight = 1; break;
 53
 54      case 84: this.reset = 1; break;
 55		}
 56
 57		this.updateMovementVector();
 58		this.updateRotationVector();
 59	};
 60
 61	this.keyup = function( event ) {
 62		switch( event.keyCode ) {
 63			case 87: /*W*/ this.moveState.forward = 0; break;
 64			case 83: /*S*/ this.moveState.back = 0; break;
 65
 66			case 65: /*A*/ this.moveState.left = 0; break;
 67			case 68: /*D*/ this.moveState.right = 0; break;
 68
 69			case 82: /*R*/ this.moveState.up = 0; break;
 70			case 70: /*F*/ this.moveState.down = 0; break;
 71
 72			case 38: /*up*/ this.moveState.pitchUp = 0; break;
 73			case 40: /*down*/ this.moveState.pitchDown = 0; break;
 74
 75			case 37: /*left*/ this.moveState.yawLeft = 0; break;
 76			case 39: /*right*/ this.moveState.yawRight = 0; break;
 77
 78      case 84: this.reset = 0; break;
 79		}
 80
 81		this.updateMovementVector();
 82		this.updateRotationVector();
 83	};
 84
 85	this.update = function( delta ) {
 86		var moveMult = delta * this.movementSpeed;
 87		var rotMult = delta * this.rollSpeed;
 88
 89    this.object.translateX( this.moveVector.x * moveMult );
 90    this.object.translateZ( this.moveVector.z * moveMult );
 91    
 92    this.object.position.y += this.moveVector.y *moveMult;
 93
 94    this.object.rotation.x += this.rotationVector.x * rotMult;
 95    this.object.rotation.y += this.rotationVector.y * rotMult;
 96    this.object.rotation.z = 0;
 97	};
 98
 99	this.updateMovementVector = function() {
100		var forward = ( this.moveState.forward || ( this.autoForward && !this.moveState.back ) ) ? 1 : 0;
101		this.moveVector.x = ( -this.moveState.left    + this.moveState.right );
102		this.moveVector.y = ( -this.moveState.down    + this.moveState.up );
103		this.moveVector.z = ( -forward + this.moveState.back );
104	};
105
106	this.updateRotationVector = function() {
107		this.rotationVector.x = ( -this.moveState.pitchDown + this.moveState.pitchUp );
108    this.rotationVector.y = ( -this.moveState.yawRight  + this.moveState.yawLeft );
109	};
110
111	this.getContainerDimensions = function() {
112		if ( this.domElement != document ) {
113			return {
114				size	: [ this.domElement.offsetWidth, this.domElement.offsetHeight ],
115				offset	: [ this.domElement.offsetLeft,  this.domElement.offsetTop ]
116			};
117		} else {
118			return {
119				size	: [ window.innerWidth, window.innerHeight ],
120				offset	: [ 0, 0 ]
121			};
122		}
123	};
124
125	function bind( scope, fn ) {
126		return function () {
127			fn.apply( scope, arguments );
128		};
129	};
130
131	this.domElement.addEventListener( 'contextmenu', function ( event ) { event.preventDefault(); }, false );
132	this.domElement.addEventListener( 'keydown', bind( this, this.keydown ), false );
133	this.domElement.addEventListener( 'keyup',   bind( this, this.keyup ), false );
134
135	this.updateMovementVector();
136	this.updateRotationVector();
137};