public void HashKey_FromInitialPosition(string[] moves, ulong expectedHashKey)
{
var polyglotBoard = new PolyglotBoard();
polyglotBoard.InitDefaultState();
foreach (var move in moves)
{
polyglotBoard.MakeMove(move);
}
Assert.Equal(expectedHashKey, polyglotBoard.CalculateHash());
}
public List <string> GetRandomOpening(int movesCount)
{
var movesList = new List <PolyglotBookEntry>();
var polyglotBoard = new PolyglotBoard();
polyglotBoard.InitDefaultState();
for (var moveIndex = 0; moveIndex < movesCount; moveIndex++)
{
var availableMoves = GetBookEntries(polyglotBoard.CalculateHash());
if (availableMoves.Count == 0)
{
break;
}
availableMoves = availableMoves.OrderBy(p => p.Weight).ToList();
var weightSum = availableMoves.Sum(p => p.Weight);
var probabilityArray = new double[availableMoves.Count];
for (var availableMoveIndex = 0; availableMoveIndex < availableMoves.Count; availableMoveIndex++)
{
probabilityArray[availableMoveIndex] = (double)availableMoves[availableMoveIndex].Weight / weightSum;
}
var randomValue = _random.NextDouble();
for (var availableMoveIndex = 0; availableMoveIndex < availableMoves.Count; availableMoveIndex++)
{
if (probabilityArray[availableMoveIndex] > randomValue || availableMoveIndex == availableMoves.Count - 1)
{
movesList.Add(availableMoves[availableMoveIndex]);
polyglotBoard.MakeMove(availableMoves[availableMoveIndex].Move.ToString());
break;
}
}
}
if (movesList.Count % 2 != 0)
{
movesList.Remove(movesList.Last());
}
return(movesList.Select(p => p.Move.ToString()).ToList());
}
