/// <summary>
/// Null if moves are not part any known opening
/// </summary>
/// <param name="previousMoves"></param>
/// <returns></returns>
public SingleMove?NextMove(IList <SingleMove> previousMoves)
{
if (!previousMoves.Any())
{
// Pick random opening strategy, white move
var index = _random.Next(Openings.Count);
var strategy = Openings[index];
Diagnostics.AddMessage($"Chosen opening strategy: {strategy.Name}. ");
return(strategy.Moves.First());
}
else
{
// Check if there is one or many possible opening strategies and pick random
var similarOpenings = OpeningsWithSameMoves(previousMoves);
if (similarOpenings.Count == 0)
{
return(null);
}
// Pick random continuation
var index = _random.Next(similarOpenings.Count);
var strategy = similarOpenings[index];
Diagnostics.AddMessage($"Using opening strategy {strategy.Name}. ");
return(strategy.Moves[previousMoves.Count]);
}
}
private static void AddIterativeDeepeningResultDiagnostics(int depthUsed, int totalMoveCount, int searchMoveCount, double evaluation, SingleMove?move = null, Board?board = null)
{
if (searchMoveCount < totalMoveCount)
{
Diagnostics.AddMessage($" Iterative deepening search depth was {depthUsed - 1} [partial {depthUsed}: ({searchMoveCount}/{totalMoveCount})].");
}
else
{
Diagnostics.AddMessage($" Iterative deepening search depth was {depthUsed} ({searchMoveCount}/{totalMoveCount}).");
}
Diagnostics.AddMessage($" Move evaluation: {evaluation}.");
// DEBUG
if (move != null && board != null && board.Strategic.EndGameWeight > 0.50)
{
var newBoard = new Board(board, move);
var isWhite = newBoard.ValueAtDefinitely(move.NewPos).IsWhite;
Diagnostics.AddMessage(" EndGameKingToCornerEvaluation: " + newBoard.EndGameKingToCornerEvaluation(isWhite));
}
}