private void OnDestroy()
 {
     // If we were the singleton, then clear the reference as we are being destroyed:
     if (_instance == this)
     {
         _instance = null;
     }
 }
 private void Awake()
 {
     // Make sure we will only ever have one of these objects:
     if (_instance == null)
     {
         _instance = this;
     }
     else
     {
         Destroy(this);
     }
 }