private Node getNodeToPlay(BasicChessboard chessboard, int totalPlayedTimes)
{
Node nodeToPlay = null;
if (PositionsAvailable.Count > 0)
{
nextNodeLock.EnterWriteLock();
if (PositionsAvailable.Count > 0)
{
nodeToPlay = new Node(PositionsAvailable.Dequeue(), chessboard.NextMoveKind);
NextNodes.Add(nodeToPlay);
}
nextNodeLock.ExitWriteLock();
}
if (nodeToPlay == null)
{
nextNodeLock.EnterReadLock();
nodeToPlay = NextNodes.Aggregate((n1, n2) =>
{
return(n1.GetUCB(totalPlayedTimes) > n2.GetUCB(totalPlayedTimes) ? n1 : n2);
});
nextNodeLock.ExitReadLock();
}
return(nodeToPlay);
}
public static SearchingChessboard MakeCopy(this BasicChessboard chessboard)
{
SearchingChessboard newChessboard = new SearchingChessboard();
chessboard.CopyTo(newChessboard);
newChessboard.GenerateAvailablePositions();
return(newChessboard);
}
public void CopyTo(BasicChessboard chessboard)
{
for (int i = 0; i < LineNum; i++)
{
for (int j = 0; j < LineNum; j++)
{
chessboard.positions[i, j] = positions[i, j];
}
}
chessboard.NextMoveKind = NextMoveKind;
chessboard.Result = Result;
}