public void UndoMovement(Position origin, Position destination, Piece capturedPiece)
{
Piece P = Brd.RemovePiece(destination);
P.DecreaseMovementsQty();
if (capturedPiece != null)
{
Brd.PutPiece(capturedPiece, destination);
Captured.Remove(capturedPiece);
}
Brd.PutPiece(P, origin);
//#Special Play: Castling short
if (P is King && destination.Column == origin.Column + 2)
{
Position originR = new Position(origin.Row, origin.Column + 3);
Position destinationR = new Position(origin.Row, origin.Column + 1);
Piece R = Brd.RemovePiece(destinationR);
R.DecreaseMovementsQty();
Brd.PutPiece(R, originR);
}
//#Special Play: Castling long
if (P is King && destination.Column == origin.Column - 2)
{
Position originR = new Position(origin.Row, origin.Column - 4);
Position destinationR = new Position(origin.Row, origin.Column - 1);
Piece R = Brd.RemovePiece(destinationR);
R.DecreaseMovementsQty();
Brd.PutPiece(R, originR);
}
//#Special Play: En Passant
if (P is Pawn)
{
if (origin.Column != destination.Column && capturedPiece == VulnerableEnPassant)
{
Piece pawn = Brd.RemovePiece(destination);
Position posP;
if (P.Color == Color.White)
{
posP = new Position(3, destination.Column);
}
else
{
posP = new Position(4, destination.Column);
}
Brd.PutPiece(pawn, posP);
}
}
}