internal void UndoMove(Move move)
{
//ARRAY
this.pieceSet[move.FromSquare] = this.pieceSet[move.ToSquare]; // muove il pezzo
this.pieceSet[move.ToSquare] = move.IsCapture() ? new Piece(SideToMove, move.PieceCaptured) : new Piece(PieceColor.None, PieceType.None); // svuota o riempie la casella di partenza
//BITBOARDS
BitBoard From = Constants.SquareMask[move.FromSquare];
BitBoard To = Constants.SquareMask[move.ToSquare];
BitBoard FromTo = From | To;
this.SideToMove = this.SideToMove.GetOpposite();
// aggiorna la bitboard
this.bitBoardSet[this.SideToMove][move.PieceMoved] ^= FromTo;
if (this.SideToMove == PieceColor.White)
this.WhitePieces ^= FromTo;
else
this.BlackPieces ^= FromTo;
if (move.PieceMoved == PieceType.King)
this.kingSquare[this.SideToMove] = move.FromSquare;
if (move.IsCapture())
{
this.bitBoardSet[this.SideToMove.GetOpposite()][move.PieceCaptured] ^= To;
//aggiorna i pezzi dell'avversario
if (this.SideToMove == PieceColor.White)
this.BlackPieces ^= To;
else
this.WhitePieces ^= To;
this.OccupiedSquares ^= From;
this.EmptySquares ^= From;
}
else
{
this.OccupiedSquares ^= FromTo;
this.EmptySquares ^= FromTo;
}
}
