/// <summary>
/// Synchronizes the Moves and MoveStack lists if the specified move
/// is not already in both lists.
/// </summary>
/// <param name="move">The move to check.</param>
private void SyncMoveStack(ISpace move)
{
// If the move diverges from the move stack, synchronize
// the Moves and MoveStack lists.
if (Moves.Count > MoveStack.Count)
{
// The move goes beyond the MoveStack, so add
// the move to the MoveStack.
MoveStack.Add(move);
}
else
{
var stackMove = MoveStack[Moves.Count - 1];
if ((stackMove == null && stackMove != move) ||
(stackMove != null && !stackMove.Equals(move)))
{
// The move is different from same position in
// the MoveStack, so reset the MoveStack to match
// the Moves list.
MoveStack = new List <ISpace>(Moves);
}
}
}
