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){
		var radius = scene.camera.radius
		
		cam.y = pos.y

		// if we were in a room already..
		if (base.room) {
			// check if we're still in the room
			if (base.room.rect.containsDisc(pos.x, pos.z, radius)) {
				cam.x = pos.x
				cam.z = pos.z
				return
			}

			// check if we've breached one of the walls.. clamp position if so
			var collision = base.room.collidesDisc(pos.x, pos.z, radius)

			if (collision) {
				if (! (collision & LEFT_RIGHT)) {
					cam.x = base.room.rect.x.clampDisc(pos.x, radius)
				}
				else {
					// cam.x = base.room.rect.x.clampDisc(pos.x, radius)
				}
				if (! (collision & FRONT_BACK)) {
					cam.z = base.room.rect.y.clampDisc(pos.z, radius)
				}
				return
			}

			// in this case, we appear to have left the room..
			$(".face.active").removeClass("active")
			base.room = null
		}

		// collision test failed, so update position
		cam.x = pos.x
		cam.z = pos.z
		
		// determine what room we are in now
		var intersects = clipper.rooms.filter(function(r){
			return r.rect.contains(pos.x, pos.z)
		})
		
		// did we actually enter a room?
		if (intersects.length) {
			base.room = intersects[0]
			base.room.mx_floor.forEach(function(w){ $(w.el).addClass("active") })
 			base.room.mx_ceiling.forEach(function(w){ $(w.el).addClass("active") })
			base.room.mx_walls.forEach(function(w){ $(w.el).addClass("active") })
		}

	}

}