/// <summary>
 /// Resets the instance reference to null when the player is destroyed.
 /// Specifically, during scene loading, but also for any other reason.
 /// </summary>
 private void OnDestroy()
 {
     if (this == _instance)
     {
         _instance = null;
     }
 }
 /// <summary>
 /// Sets the instance reference to itself whenever a new instance is created.
 /// If another one exists, it will log an error and destroy itself.
 /// Note: We might want to change it so that it destroys the OTHER instance, if it turns out to be easier in practice.
 /// </summary>
 private void Awake()
 {
     if (_instance != null && _instance != this)
     {
         Debug.LogError("[PlayerInstance]: There should never be more than one PlayerInstance. Destroying new Instance.");
         Destroy(this.gameObject);
         return;
     }
     _instance = this;
 }