public void MakeThePlay(Position origin, Position destination)
{
Piece CapturedPiece = RunMovement(origin, destination);
if (IsItChecked(CurrentPlayer))
{
UndoMovement(origin, destination, CapturedPiece);
throw new BoardException("You Can't put yourself in check!");
}
Piece p = Brd.Piece(destination);
//#Special Play: Promotion
if (p is Pawn)
{
if (p.Color == Color.White && destination.Row == 0 || p.Color == Color.Black && destination.Row == 7)
{
p = Brd.RemovePiece(destination);
Pieces.Remove(p);
Piece queen = new Queen(Brd, p.Color);
Brd.PutPiece(queen, destination);
Pieces.Add(queen);
}
}
if (IsItChecked(Opponent(CurrentPlayer)))
{
Check = true;
}
else
{
Check = false;
}
if (CheckmateTest(Opponent(CurrentPlayer)))
{
Finished = true;
}
else
{
Turn++;
ChangePlayer();
}
//#Special Play: En Passant
if (p is Pawn && destination.Row == origin.Row - 2 || destination.Row == origin.Row + 2)
{
VulnerableEnPassant = p;
}
else
{
VulnerableEnPassant = null;
}
}
public Piece RunMovement(Position origin, Position destination)
{
Piece P = Brd.RemovePiece(origin);
P.IncreaseMovementsQty();
Piece CapturedPiece = Brd.RemovePiece(destination);
Brd.PutPiece(P, destination);
if (CapturedPiece != null)
{
Captured.Add(CapturedPiece);
}
//#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(originR);
R.IncreaseMovementsQty();
Brd.PutPiece(R, destinationR);
}
//#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(originR);
R.IncreaseMovementsQty();
Brd.PutPiece(R, destinationR);
}
//#Special Play: En Passant
if (P is Pawn)
{
if (origin.Column != destination.Column && CapturedPiece == null)
{
Position posP;
if (P.Color == Color.White)
{
posP = new Position(destination.Row + 1, destination.Column);
}
else
{
posP = new Position(destination.Row - 1, destination.Column);
}
CapturedPiece = Brd.RemovePiece(posP);
Captured.Add(CapturedPiece);
}
}
return(CapturedPiece);
}
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);
}
}
}