protected override void OnDestroy()
 {
     this.DestroyRender3DRT();
     this.DestroyBackground();
     CMD_DigiGarden.instance = null;
     base.OnDestroy();
 }
 protected override void Awake()
 {
     base.Awake();
     CMD_DigiGarden.instance = this;
     this.endDateTime        = ServerDateTime.Now;
 }