/// <summary>
/// Merge the tiles and Remove everything from the LinkedList.
/// </summary>
public IEnumerator MergeTiles()
{
canAdd = false;
int count = order.Count;
int index = count;
for (int i = 0; i < count; i++, index--)
{
//Start Removing from the first to the last
TileBase tile = order.First.Value;
order.RemoveFirst();
tile.OnMerge(i);
//remove from board
board[tile.row, tile.col].tile = null;
yield return(new WaitForSeconds(timeMerge));
}
canAdd = true;
StartCoroutine(Collapse());
}