void tile_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            if (isMoving)
                return;
            saveTile = sender as Tile;

            savePoint = e.GetPosition(Tiles);

        }
 public Tile FindTile(int x, int y, Tile origin)
 {
     foreach (Tile item in Tiles.Children)
     {
         if (item.IndexX == x && item.IndexY == y)
         {
             if (origin == item)
                 continue;
             return item;
         }
     }
     return null;
 }