/// <summary>
/// Returns whether the piece has any possible legal captures.
/// </summary>
/// <param name="piece"></param>
/// <returns></returns>
private bool DoesPieceHaveLegalCapture(IPiece piece)
{
piece.GenerateCaptures(GameBoard.State, ActivePlayerBoardState);
ICapture capture = ModelLocator.Capture;
capture.StartingPosition = piece.Location;
IBoardState captureSet = ModelLocator.BoardState;
captureSet.Add(piece.CaptureSet);
foreach (ChessPosition position in captureSet)
{
capture.EndingPosition = position;
if (IsCaptureLegal(piece, capture, GameBoard.State))
{
return(true);
}
if (piece is IPawn && IsCaptureLegalEnPassant(piece, capture, GameBoard))
{
return(true);
}
}
return(false);
}
/// <summary>
/// Is a capture legal?
/// </summary>
/// <returns></returns>
private bool IsCaptureLegal(IPiece piece, ICapture capture, IBoardState state)
{
piece.GenerateCaptures(state, ActivePlayerBoardState);
bool canPieceCapture = piece.CanCaptureAt(capture.EndingPosition);
bool doesCaptureLeaveKingInCheck = DoesPotentialMoveLeaveKingInCheck(capture);
return(canPieceCapture && !doesCaptureLeaveKingInCheck);
}
