// 게임오버 팝업
 protected override void GameOver()
 {
     Time.timeScale = 0;
     PopupGameOver.SetActive(true);
 }
 // 재시작
 public void ReTry()
 {
     PopupGameOver.SetActive(false);
     Time.timeScale = 1;
     Application.LoadLevel(Application.loadedLevelName);
 }