/// <summary>
/// Determine whether a position is threatened.
/// </summary>
/// <param name="position">Position to check</param>
/// <param name="board">Board to reference</param>
/// <param name="inactivePlayerBoardState">Used to only check opponent's pieces</param>
/// <returns></returns>
private bool IsPositionThreatened(ChessPosition position, IBoard board, IBoardState inactivePlayerBoardState)
{
foreach (IPiece enemyPiece in InactivePlayerPieces.Where(p => p.Location != ChessPosition.None))
{
enemyPiece.GenerateThreatened(board.State, inactivePlayerBoardState);
if (enemyPiece.IsThreateningAt(position))
{
return(true);
}
}
return(false);
}
/// <summary>
/// Returns all pieces that are threatening the passed in King
/// </summary>
/// <param name="king"></param>
/// <returns></returns>
private List <IPiece> GetPiecesThreateningKing(IKing king)
{
var piecesThreateningKing = new List <IPiece>();
InactivePlayerPieces.ForEach(p =>
{
p.GenerateThreatened(GameBoard.State, InactivePlayerBoardState);
if (p.IsThreateningAt(king.Location))
{
piecesThreateningKing.Add(p);
}
});
return(piecesThreateningKing);
}
