else if(action === Types.Messages.MOVE) {
                if(self.move_callback) {
                    var x = message[1],
                        y = message[2];

                    if(self.server.isValidPosition(x, y)) {
                        self.setPosition(x, y);
                        self.clearTarget();

                        self.broadcast(new Messages.Move(self));
                        self.move_callback(self.x, self.y);
                    }
                }
            }