private void OnTriggerEnter2D(Collider2D collision)
 {
     if (collision.GetComponent <PlayerBehavior>() != null)
     {
         float totalRoomCompletion = 0;
         foreach (RoomEndButton room in rooms)
         {
             totalRoomCompletion += room.percentageComplete;
         }
         floorCompletion = totalRoomCompletion / rooms.Count;
         winScreen.InputScore(floorCompletion);
         SceneManager.LoadScene(nextFloor);
     }
 }