public Move Query(Board board, MoveOrganizer moveOrganizer)
{
int totalQuaryVal = 0;
m_queryMoves.Clear();
foreach (Move move in moveOrganizer)
{
if (move.Execute(board))
{
int currentQueryVal = 0;
if (board.State.NonHitAndPawnMovesPlayed < 100 &&
board.BoardHistoryFrequency() < 3 &&
m_positionTable.TryGetValue(board.BoardHash(false), out currentQueryVal))
{
totalQuaryVal += currentQueryVal;
m_queryMoves.Add(new QueryEntry(move, currentQueryVal));
}
move.UnExecute(board);
}
}
//select a move using probabilety based on the quary value
int selectValueCurrent = 0;
int selectValueTarget = (int)Math.Round(m_moveSelector.NextDouble() * totalQuaryVal);
for (int i = 0; i < m_queryMoves.Count; ++i)
{
selectValueCurrent += m_queryMoves[i].QueryScore;
if (selectValueCurrent >= selectValueTarget)
{
OutputWriter.Write("Book moves: " + m_queryMoves.Count + ", Selecting: " + Math.Round((float)m_queryMoves[i].QueryScore / (float)totalQuaryVal, 6));
return m_queryMoves[i].QueryMove;
}
}
return null;
}
/// <summary>
/// Used to obtain if the game is a draw due to the current board has been represented tree times in the game.
/// </summary>
/// <returns>True if the current board has been repeated three times. False otherwise.</returns>
private bool IsDrawRepetitionOfMoves()
{
return(m_board.BoardHistoryFrequency() == 3);
}