public void OnButtonPlayAgainClick()
{
score.GetComponentInChildren <Text>().text = "0";
Tube.DeleteAll();
character.SetDefaultValues(true);
character.rigidbody2D.constraints = RigidbodyConstraints2D.FreezeAll;
character.gameObject.transform.position = Vector3.zero;
character.rigidbody2D.velocity = Vector3.zero;
character.gameObject.transform.rotation = Quaternion.identity;
character.rigidbody2D.constraints = RigidbodyConstraints2D.None;
deadMenu.SetActive(false);
score.SetActive(true);
// remove button focus
EventSystem.current.SetSelectedGameObject(null);
}