/// <summary>
/// Evaluates a position with stop parameters.
/// </summary>
/// <param name="evalReq">The eval request.</param>
public void Evaluate(StartEvaluationRequest evalReq)
{
if (evalReq.EngineOptions != null)
{
foreach (var op in evalReq.EngineOptions)
{
this.SetOption(op.Key, op.Value.ToUciValueString());
}
}
var position = StartPositionExtrapolator.ExtrapolateStartingPosition(evalReq.Position);
this.SetPosition(position.Fen);
var goCmd = evalReq.ToGoString();
this.bridgeLogger.LogInformation($"Using gocmd: '{goCmd}'.");
this.engineProcess.WriteCommand(goCmd);
if (evalReq?.CompletionCriteria?.Infinite ?? false)
{
// infinite
}
else
{
this.engineProcess.WaitForText("bestmove", int.MaxValue);
}
this.engineProcess.PopOutputBuffer();
}
/// <summary>
/// Gets the move filter string for "searchmoves".
/// </summary>
/// <param name="req">The evaluation request.</param>
/// <returns>The "searchmoves" string.</returns>
/// <exception cref="ArgumentException">If an invalid SAN move is given.</exception>
internal static string GetMoveFilterString(this StartEvaluationRequest req)
{
var sb = new StringBuilder();
sb.Append("searchmoves ");
var startFen = StartPositionExtrapolator.ExtrapolateStartingPosition(req.Position).Fen;
var board = Board.NewFromFen(startFen);
var moves = board.GetPossibleMoves(board.MoveHistory.Count % 2 == 0 ? PieceColor.White : PieceColor.Black);
foreach (var m in req.SearchMoves)
{
if (!string.IsNullOrEmpty(m.UCI))
{
sb.Append($"{m.UCI} ");
}
else if (!string.IsNullOrEmpty(m.SAN))
{
var correspondingMove = moves.FirstOrDefault(mov => mov.ToContextualSANString(board) == m.SAN);
if (correspondingMove == default(Move))
{
throw new ArgumentException($"Cannot create go string with move filter with SAN '{m.SAN}' as no corresponding UCI move can be found.");
}
sb.Append($"{correspondingMove.ToUciString()} ");
}
}
return(sb.ToString().TrimEnd());
}