public List <Vector2> GetPath(int startIndex)
 {
     if (!Head)
     {
         List <Vector2> path = new List <Vector2>();
         for (int i = 0; i <= startIndex; i += 1)
         {
             path.Add(Path[i]);
         }
         return(path);
     }
     else
     {
         return(Head.GetPath(startIndex));
     }
 }