public void StartGame()
{
ball_x = 0;
counter = 0f;
btn_start.gameObject.SetActive(false);
map.BuildMap(Random.Range(0f, 0f));
_ball = Instantiate(ball, map.PosBoll, Quaternion.identity) as GameObject;
_ball.GetComponent <Ball>().gm = this;
_ball.GetComponent <Ball>().rope = _rope;
_ball.GetComponent <Ball>().Connect(new Vector3(0.3f, 1f, 0f));
ball_rb = _ball.GetComponent <Rigidbody>();
ball_x = _ball.transform.position.x;
}