threex/src/threex.minecraft/threex.minecraftcontrols.js

Game Extensions for three.js http://www.threejsgames.com/extensions/

var THREEx	= THREEx || {};

THREEx.MinecraftControls	= function(object3d, input){
	// arguments default values
	input		= input	|| {}

	// handle arguments default values
	this.speed		= 2;
	this.angularSpeed	= 0.2 * Math.PI * 2;
	this.input	= input;
	this.object3d	= object3d;
	
	// user control
	this.update	= function(delta, now){
		var prevPosition	= object3d.position.clone();
		// rotation
		if( input.left )	object3d.rotation.y += this.angularSpeed*delta
		if( input.right )	object3d.rotation.y -= this.angularSpeed*delta

		// strafe
		var distance	= 0;
		if( input.strafeLeft )	distance	= +this.speed * delta;
		if( input.strafeRight )	distance	= -this.speed * delta;
		if( distance ){
			var velocity	= new THREE.Vector3(distance, 0, 0);
			var matrix	= new THREE.Matrix4().makeRotationY(object3d.rotation.y);
			velocity.applyMatrix4( matrix );
			object3d.position.add(velocity);
		}

		// up/down
		var distance	= 0;
		if( input.up )		distance	= +this.speed * delta;
		if( input.down )	distance	= -this.speed * delta;
		if( distance ){
			var velocity	= new THREE.Vector3(0, 0, distance);
			var matrix	= new THREE.Matrix4().makeRotationY(object3d.rotation.y);
			velocity.applyMatrix4( matrix );
			object3d.position.add(velocity);
		}
	}
}