public void UndoMove(Position origin, Position destination, Piece captured)
{
Piece piece = Board.RemovePiece(destination);
piece.DecrementMovimentsQuantity();
if (captured != null)
{
Board.InsertPiece(captured, destination);
_capturedPieces.Remove(captured);
}
Board.InsertPiece(piece, origin);
// #SpecialMove Castling Short
if (piece is King && destination.Column == origin.Column + 2)
{
Position RookOrigin = new Position(origin.Line, origin.Column + 3);
Position RookDestination = new Position(origin.Line, origin.Column + 1);
Piece Rook = Board.RemovePiece(RookDestination);
Rook.DecrementMovimentsQuantity();
Board.InsertPiece(Rook, RookOrigin);
}
// #SpecialMove Castling Long
if (piece is King && destination.Column == origin.Column - 2)
{
Position RookOrigin = new Position(origin.Line, origin.Column - 4);
Position RookDestination = new Position(origin.Line, origin.Column - 1);
Piece Rook = Board.RemovePiece(RookDestination);
Rook.DecrementMovimentsQuantity();
Board.InsertPiece(Rook, RookOrigin);
}
// #SpecialMove En Passant
if (piece is Pawn)
{
if (origin.Column != destination.Column && captured == EnPassantVulnerable)
{
Piece pawn = Board.RemovePiece(destination);
Position pawnPosition;
if (piece.Color == Color.White)
{
pawnPosition = new Position(3, destination.Column);
}
else
{
pawnPosition = new Position(4, destination.Column);
}
Board.InsertPiece(pawn, pawnPosition);
}
}
}
