/// <summary>
/// Removes line connecting tiles, and clears the stack.
/// </summary>
public void ClearOrder()
{
canAdd = false;
int count = order.Count;
// int index = count;
for (int i = 0; i < count; i++)
{
TileBase tile = order.Last.Value;
order.RemoveLast();
tile.ResetLine();
}
canAdd = true;
}