public void SetNavigationMode(int iController)
 {
     if (iController < _controllers.Count)
     {
         //need to restart the navigation process
         //cant call stop navigation because that would set IsNavigating to false
         if (IsNavigating)
         {
             CurrentNavigationController.StopNavigation();
         }
         _selectedNav = iController;
         if (IsNavigating)
         {
             StartNavigation();
         }
     }
     else
     {
         Debug.Log("There aren't that many controllers in the manager");
     }
 }
 public void StopNavigation()
 {
     IsNavigating = false;
     CurrentNavigationController.StopNavigation();
 }