// Update is called once per frame
 void Update()
 {
     for (KeyCode keyCode = KeyCode.Alpha1; keyCode <= KeyCode.Alpha4; keyCode++)
     {
         if (Input.GetKeyDown(keyCode))
         {
             ui.OpenPanel(ui.transform.GetChild(keyCode - KeyCode.Alpha0 - 1).gameObject);
             return;
         }
     }
 }
 private void EscInput()
 {
     if (SceneManager.GetActiveScene().name == "SelectLevel")
     {
         SelectLevelUI ui = GameObject.Find("SelectPanel").GetComponent <SelectLevelUI>();
         ui.OpenPanel(ui.transform.Find("RootPanel").gameObject);
     }
     else
     {
         PlayScene.Instance.isSelectLevel  = true;
         GameManager.Instance.currentLevel = 1;
         GameManager.Instance.LoadScene();
     }
 }