internal void UndoMove(Move.Move move, Player player)
{
MovePiece(move.DestSquare, move.OriginSquare);
if (move.IsCapture)
{
var capturedPieceSquare = GetCapturedPieceSquare(move);
var pieceToRessurect = new PieceOnBoard(
Utils.GetOtherPlayer(player),
move.GetCapturedPiece(),
capturedPieceSquare);
_pieceTable.InsertPiece(pieceToRessurect);
_occupiedSquares.SetBit(capturedPieceSquare.IntValue);
}
if (move.IsPromotion)
{
_pieceTable.UpdatePiece(move.OriginSquare.IntValue, Piece.Pawn);
}
else if (move.IsShortCastle)
{
UndoMove(GetShortCastleRookMove(player), player);
}
else if (move.IsLongCastle)
{
UndoMove(GetLongCastleRookMove(player), player);
}
}
public void InsertPiece(PieceOnBoard pieceOnBoard)
{
var linkedList = _playerPieces[(int)pieceOnBoard.player];
var squareIndex = pieceOnBoard.square.IntValue;
if (pieceOnBoard.piece == Piece.King)
{
_table[squareIndex] = linkedList.AddFirst(pieceOnBoard);
}
else
{
_table[squareIndex] = linkedList.AddLast(pieceOnBoard);
}
}