public Syzygy(Chessboard board, String path)
{
this.board = board;
try { impl = new Fathom(path); }
catch (Exception e) when(
e is DllNotFoundException || e is SyzygyLoadException
)
{
System.Console.WriteLine(e.Message);
}
}
// Castling is not supported
public Ply getBestPly()
{
if (impl is null)
{
return(null);
}
if (board.CountMen > impl.Largest)
{
return(null);
}
Bitboard bitboard = board.ToBitboard();
uint res = impl.ProbeRoot(
bitboard.white,
bitboard.black,
bitboard.kings,
bitboard.queens,
bitboard.rooks,
bitboard.bishops,
bitboard.knights,
bitboard.pawns,
0, // 50-move clock
bitboard.castling,
bitboard.ep, // "En passant"
bitboard.turn,
UIntPtr.Zero // No more results
);
if (res == Fathom.TB_RESULT_FAILED)
{
return(null);
}
uint from = Fathom.GetFrom(res);
uint to = Fathom.GetTo(res);
uint promote = Fathom.GetPromotes(res);
uint ep = Fathom.GetEP(res);
Ply ply;
switch (promote)
{
case Fathom.TB_PROMOTES_ROOK:
ply = Ply.PromoteRook(from, to);
break;
case Fathom.TB_PROMOTES_KNIGHT:
ply = Ply.PromoteKnight(from, to);
break;
case Fathom.TB_PROMOTES_BISHOP:
ply = Ply.PromoteBishop(from, to);
break;
case Fathom.TB_PROMOTES_QUEEN:
ply = Ply.PromoteQueen(from, to);
break;
default:
if (ep == 0)
{
ply = Ply.Position(from, to);
}
else
{
ply = Ply.EnPassant(from, to, ep, false); //TODO <----- Qu'est ce qu'il se passe la ? Si capture effective mettre true, si generation d'une case EP mettre false
}
break;
}
// From here, it is just printf debugging
{
String status;
if (res == Fathom.TB_RESULT_CHECKMATE)
{
status = "Checkmate";
}
else if (res == Fathom.TB_RESULT_STALEMATE)
{
status = "Stalemate";
}
else if (res == Fathom.TB_RESULT_FAILED)
{
status = "Failed";
}
else
{
status = "Normal";
}
uint wdl = Fathom.GetWDL(res);
String wdlStr;
switch (wdl)
{
case Fathom.TB_WIN:
wdlStr = "WIN";
break;
case Fathom.TB_CURSED_WIN:
wdlStr = "CURSED WIN";
break;
case Fathom.TB_DRAW:
wdlStr = "DRAW";
break;
case Fathom.TB_BLESSED_LOSS:
wdlStr = "BLESSED LOSS";
break;
case Fathom.TB_LOSS:
wdlStr = "LOSS";
break;
default:
wdlStr = "N/A";
break;
}
uint dtz = Fathom.GetDTZ(res);
Console.Out.WriteLine(
"Status: " + status + "\n" +
"WDL: " + wdlStr + ", DTZ: " + dtz + "\n" +
"ply: " + ply.ToString() + "\n" +
"ep: " + ep + "\n"
);
}
return(ply);
}