/// <summary>
/// Is a move legal?
/// </summary>
/// <returns></returns>
private bool IsMoveLegal(IPiece piece, IMove move, IBoardState state)
{
piece.GenerateMoves(state);
bool canPieceMove = piece.CanMoveTo(move.EndingPosition);
bool doesMoveLeaveKingInCheck = DoesPotentialMoveLeaveKingInCheck(move);
return(canPieceMove && !doesMoveLeaveKingInCheck);
}
/// <summary>
/// Returns whether the piece has any possible legal moves.
/// </summary>
/// <param name="piece"></param>
/// <returns></returns>
private bool DoesPieceHaveLegalMove(IPiece piece)
{
piece.GenerateMoves(GameBoard.State);
IMove move = ModelLocator.Move;
move.StartingPosition = piece.Location;
IBoardState moveSet = ModelLocator.BoardState;
moveSet.Add(piece.MoveSet);
foreach (ChessPosition position in moveSet)
{
move.EndingPosition = position;
if (IsMoveLegal(piece, move, GameBoard.State))
{
return(true);
}
}
if (!(piece is IKing))
{
return(false);
}
IEnumerable <ChessPosition> moves = ModelLocator.CastlingHelper.GetCastleMovesForKing((IKing)piece);
foreach (ChessPosition castleMove in moves)
{
move.EndingPosition = castleMove;
if (IsCastleLegal(piece, move, GameBoard))
{
return(true);
}
}
return(false);
}
