public string Export(Game game)
{
Board currentBoard = game.BoardTimeline.Current;
GameConditions currentGameConditions = game.StartingConditions.CalculateEndingGameConditions(currentBoard, game.PreviousMoves.GetStartToCurrent());
return(ConvertCurrentGameStateToFEN(currentBoard, currentGameConditions));
}
/// <summary>Creates a Game instance of a given mode with a standard starting Board.</summary>
/// <param name="mode">Describes which players are human or AI.</param>
/// <param name="startingConditions">Conditions at the time the board was set up.</param>
public Game(Mode mode, GameConditions startingConditions)
{
Mode = mode;
CurrentTurnSide = Side.White;
StartingConditions = startingConditions;
BoardTimeline = new Timeline <Board>();
PreviousMoves = new Timeline <HalfMove>();
enPassantCaptureSquareTimeline = new Timeline <Square>();
BoardTimeline.AddNext(new Board());
enPassantCaptureSquareTimeline.AddNext(Square.Invalid);
UpdateAllPiecesLegalMoves(BoardTimeline.Current, enPassantCaptureSquareTimeline.Current, Side.White);
}
private static string ConvertCurrentGameStateToFEN(Board currentBoard, GameConditions currentGameConditions)
{
string toMoveString = currentGameConditions.WhiteToMove ? "w" : "b";
bool areAnyCastlingsAvailable = currentGameConditions.WhiteCanCastleKingside || currentGameConditions.WhiteCanCastleQueenside || currentGameConditions.BlackCanCastleKingside || currentGameConditions.BlackCanCastleQueenside;
string castlingInfoString = areAnyCastlingsAvailable ?
$"{(currentGameConditions.WhiteCanCastleKingside ? "K" : "")}{(currentGameConditions.WhiteCanCastleQueenside ? "Q" : "")}{(currentGameConditions.BlackCanCastleKingside ? "k" : "")}{(currentGameConditions.BlackCanCastleQueenside ? "q" : "")}" :
"-";
string enPassantSquareString = currentGameConditions.EnPassantSquare.IsValid ?
SquareUtil.SquareToString(currentGameConditions.EnPassantSquare) :
"-";
return($"{CalculateRankStrings(currentBoard)} {toMoveString} {castlingInfoString} {enPassantSquareString} {currentGameConditions.HalfMoveClock} {currentGameConditions.TurnNumber}");
}
