var mover = new function(){

	var base = this
	base.room = null

	base.init = function(){
		base.bind()
		base.update(scene.camera)
	}
	
	base.bind = function(){
		app.on("move", base.update)
	}
	
	base.update = function(pos){
		cam.y = pos.y
		
		// if we were in a room
		if (base.room) {
			// check if we're still in the room
			if (base.room.rect.contains(pos.x, pos.z)) {
				cam.x = pos.x
				cam.z = pos.z
				return
			}
			// check if we've crossed one of the walls.. clamp position if so
			var collision = base.room.collides(pos.x, pos.z)
			if (collision) {
				if (! (collision & LEFT || collision & RIGHT)) {
					cam.x = pos.x
				}
				if (! (collision & FRONT || collision & BACK)) {
					cam.z = pos.z
				}
				return
			}
		}
		
		// otherwise we've either entered into a new room, or broken free
		var intersects = clipper.rooms.filter(function(r){
			return r.rect.contains(pos.x, pos.z)
		})
		
		$(".face.active").removeClass("active")
		if (intersects.length) {
			base.room = intersects[0]
			base.room.$floor.addClass("active")
			base.room.$ceiling.addClass("active")
			base.room.$walls.addClass("active")
		}
		else {
			base.room = null
		}

				cam.x = pos.x
				cam.z = pos.z
	}

}