private async Task TreeStrapAsync(GameBoard gameBoard, int maxDepth, TimeSpan maxTime, int maxHelperThreads, CancellationToken token)
{
if (null == gameBoard)
{
throw new ArgumentNullException(nameof(gameBoard));
}
if (maxDepth < 0)
{
throw new ArgumentOutOfRangeException("maxDepth");
}
if (maxTime < TimeSpan.Zero)
{
throw new ArgumentOutOfRangeException("maxTime");
}
if (maxHelperThreads < 0)
{
throw new ArgumentOutOfRangeException("maxHelperThreads");
}
// Make sure we have a clean state
ResetCaches();
List <ulong> boardKeys = new List <ulong>();
while (gameBoard.GameInProgress)
{
if (token.IsCancellationRequested)
{
break;
}
boardKeys.Add(gameBoard.ZobristKey);
if (boardKeys.Count >= 6)
{
int lastIndex = boardKeys.Count - 1;
if (boardKeys[lastIndex] == boardKeys[lastIndex - 4] && boardKeys[lastIndex - 1] == boardKeys[lastIndex - 5])
{
// We're in a loop, exit now
break;
}
}
CancellationTokenSource searchCancelationToken = new CancellationTokenSource();
if (maxTime < TimeSpan.MaxValue)
{
searchCancelationToken.CancelAfter(maxTime);
}
// Get best move
Move bestMove = await GetBestMoveAsync(gameBoard, maxDepth, maxTime, maxHelperThreads, searchCancelationToken.Token);
HashSet <ulong> visitedKeys = new HashSet <ulong>();
DeltaFromTransTable(gameBoard, visitedKeys, token, out MetricWeights deltaStart, out MetricWeights deltaEnd);
// Update metric weights with delta
StartMetricWeights.Add(deltaStart);
EndMetricWeights.Add(deltaEnd);
// Play best move and reset caches
gameBoard.TrustedPlay(bestMove);
ResetCaches();
}
}
public void WriteXml(Stream outputStream)
{
if (null == outputStream)
{
throw new ArgumentNullException(nameof(outputStream));
}
XmlWriterSettings settings = new XmlWriterSettings
{
Indent = true
};
using (XmlWriter writer = XmlWriter.Create(outputStream, settings))
{
writer.WriteStartElement("Profile");
writer.WriteStartElement("Id");
writer.WriteValue(Id.ToString());
writer.WriteEndElement();
if (!string.IsNullOrWhiteSpace(_name))
{
writer.WriteStartElement("Name");
writer.WriteValue(_name.Trim());
writer.WriteEndElement();
}
writer.WriteStartElement("Generation");
writer.WriteValue(Generation);
writer.WriteEndElement();
if (ParentA.HasValue)
{
writer.WriteStartElement("ParentA");
writer.WriteValue(ParentA.ToString());
writer.WriteEndElement();
}
if (ParentB.HasValue)
{
writer.WriteStartElement("ParentB");
writer.WriteValue(ParentB.ToString());
writer.WriteEndElement();
}
writer.WriteStartElement("Records");
for (int i = 0; i < Records.Length; i++)
{
writer.WriteStartElement("Record");
writer.WriteAttributeString("GameType", EnumUtils.GetExpansionPiecesString((ExpansionPieces)i));
writer.WriteAttributeString("EloRating", Records[i].EloRating.ToString());
writer.WriteAttributeString("Wins", Records[i].Wins.ToString());
writer.WriteAttributeString("Losses", Records[i].Losses.ToString());
writer.WriteAttributeString("Draws", Records[i].Draws.ToString());
writer.WriteAttributeString("AutoTrains", Records[i].AutoTrains.ToString());
writer.WriteEndElement();
}
writer.WriteEndElement();
writer.WriteStartElement("Creation");
writer.WriteValue(CreationTimestamp);
writer.WriteEndElement();
writer.WriteStartElement("LastUpdated");
writer.WriteValue(LastUpdatedTimestamp);
writer.WriteEndElement();
StartMetricWeights.WriteMetricWeightsXml(writer, "StartMetricWeights");
EndMetricWeights.WriteMetricWeightsXml(writer, "EndMetricWeights");
writer.WriteEndElement(); // </Profile>
}
}
public void WriteXml(Stream outputStream)
{
if (null == outputStream)
{
throw new ArgumentNullException("outputStream");
}
XmlWriterSettings settings = new XmlWriterSettings
{
Indent = true
};
using (XmlWriter writer = XmlWriter.Create(outputStream, settings))
{
writer.WriteStartElement("Profile");
writer.WriteStartElement("Id");
writer.WriteValue(Id.ToString());
writer.WriteEndElement();
if (!string.IsNullOrWhiteSpace(_name))
{
writer.WriteStartElement("Name");
writer.WriteValue(_name.Trim());
writer.WriteEndElement();
}
writer.WriteStartElement("Generation");
writer.WriteValue(Generation);
writer.WriteEndElement();
if (ParentA.HasValue)
{
writer.WriteStartElement("ParentA");
writer.WriteValue(ParentA.ToString());
writer.WriteEndElement();
}
if (ParentB.HasValue)
{
writer.WriteStartElement("ParentB");
writer.WriteValue(ParentB.ToString());
writer.WriteEndElement();
}
writer.WriteStartElement("EloRating");
writer.WriteValue(EloRating);
writer.WriteEndElement();
writer.WriteStartElement("Wins");
writer.WriteValue(Wins);
writer.WriteEndElement();
writer.WriteStartElement("Losses");
writer.WriteValue(Losses);
writer.WriteEndElement();
writer.WriteStartElement("Draws");
writer.WriteValue(Draws);
writer.WriteEndElement();
writer.WriteStartElement("Creation");
writer.WriteValue(CreationTimestamp);
writer.WriteEndElement();
writer.WriteStartElement("LastUpdated");
writer.WriteValue(LastUpdatedTimestamp);
writer.WriteEndElement();
writer.WriteStartElement("StartMetricWeights");
MetricWeights.IterateOverWeights((bugType, bugTypeWeight) =>
{
string key = MetricWeights.GetKeyName(bugType, bugTypeWeight);
double value = StartMetricWeights.Get(bugType, bugTypeWeight);
writer.WriteStartElement(key);
writer.WriteValue(value);
writer.WriteEndElement();
});
writer.WriteEndElement(); // </StartMetricWeights>
writer.WriteStartElement("EndMetricWeights");
MetricWeights.IterateOverWeights((bugType, bugTypeWeight) =>
{
string key = MetricWeights.GetKeyName(bugType, bugTypeWeight);
double value = EndMetricWeights.Get(bugType, bugTypeWeight);
writer.WriteStartElement(key);
writer.WriteValue(value);
writer.WriteEndElement();
});
writer.WriteEndElement(); // </EndMetricWeights>
writer.WriteEndElement(); // </Profile>
}
}
