public override void Undo()
{
if (executed)
{
TargetTile.DetachPiece();
SelectedTile.AttachPiece(Piece, PieceHasMoved);
if (Piece is IEnPassantable)
{
IEnPassantable enPassantablePiece = Piece as IEnPassantable;
enPassantablePiece.CurrentlyEnPassantable = false;
}
executed = false;
}
}
public override void Execute()
{
if (!executed)
{
SelectedTile.DetachPiece();
TargetTile.AttachPiece(Piece, true);
if (Piece is IEnPassantable)
{
IEnPassantable enPassantablePiece = Piece as IEnPassantable;
enPassantablePiece.CurrentlyEnPassantable = true;
}
executed = true;
}
}
public void DisableEnPassantables(Alliance alliance)
{
foreach (Tile tile in Board.CurrentState.Tiles)
{
if (!tile.IsVacant)
{
if (tile.Piece is IEnPassantable)
{
if (tile.Piece.Alliance == alliance)
{
IEnPassantable enPassantablePiece = tile.Piece as IEnPassantable;
enPassantablePiece.CurrentlyEnPassantable = false;
}
}
}
}
}
public override ReadOnlyCollection <Move> GetCandidateMoves(BoardState board, ChessPiece piece)
{
ReadOnlyCollection <Tile> CandidateTiles = GetCandidateTiles(board, piece);
List <Move> CandidateMoves = new List <Move>();
foreach (Tile tile in CandidateTiles)
{
if (tile.Piece is IEnPassantable)
{
IEnPassantable enPassantablePiece = tile.Piece as IEnPassantable;
if (enPassantablePiece.CurrentlyEnPassantable)
{
CandidateMoves.Add(new EnPassantMove(board[piece.Row, piece.Column], board[piece.Row + MovementBaseStepY, piece.Column + MovementBaseStepX], tile));
}
}
}
return(CandidateMoves.AsReadOnly());
}
