public Option <Move.Move> FindBestMove(Position.Position currentPosition)
{
evaluator.OnNewSearch(currentPosition);
Option <Move.Move> bestMove = Option.None <Move.Move>();
int bestMoveEvaluation = MinEvaluationValue;
foreach (var move in MoveGenerator.GenerateLegalMoves(currentPosition))
{
currentPosition.PlayMove(move);
var evaluation = -CalculateEvaluationRecursively(
currentPosition,
currentDepth: 1)
.ValueOr(-MinEvaluationValue);
if (!bestMove.HasValue || evaluation >= bestMoveEvaluation)
{
bestMove = Option.Some(move);
bestMoveEvaluation = evaluation;
}
currentPosition.UndoMove();
}
return(bestMove);
}
public Task <Option <Move.Move> > FindBestMove(Position.Position position)
{
var legalMoves = MoveGenerator.GenerateLegalMoves(position);
if (legalMoves.Count == 0)
{
return(Task.FromResult(Option.None <Move.Move>()));
}
else if (legalMoves.Count == 1)
{
return(Task.FromResult(Option.Some(legalMoves[0])));
}
var searchManager = new SearchManager(new Evaluator(), 2);
return(Task.Run(() => searchManager.FindBestMove(position)));
}