public GameState(ICommand Command)
{
if (Command is null)
{
throw new ArgumentNullException("Command");
}
this.Command = Command;
//
//[ToDo]Allocate a separate Pool of positions for each thread:
//
PositionPool = new Pool <Position>();
Bound = new SearchBound();
Rule = new CastleRule();
Case = new PerfCase();
newBestMoves(wDepthMax);
newTimers();
SeededRandom = new Random(); // Variable seed based on Environment.TickCount
loadEndgameValue();
loadExtensionLimit();
#if KillerCompositionHash
var uBottleLength = 8191U;
#else
var uBottleLength = wPlyHistory;
#endif
#if UseKillers
Bottle = new MoveBottle(uBottleLength);
#endif // UseKillers
wireControls();
newNodeDelta(wDepthMax);
newEarlyMoveCounts(wPlyHistory);
newPVDoubleCounts(wPlyHistory);
#if MaterialBalance
newCXPMemo(uDefaultComposition2);
#else
newCXPMemo(uDefaultCompositions);
#endif
newPXPMemo(uDefaultPawnPositions);
//clear();
}
public Eval IteratePlies(SearchBound bound)
{
var mValue = EvalUndefined; // Return Value
var vDepthLimit = bound.Plies;
var wMovesToMate = bound.MovesToMate;
#if DisplayDepth
var sw = State.IterationTimer;
if (sw is null)
{
throw new PositionException("Null IterationTimer Stopwatch");
}
else
{
sw.Start();
}
var qTotal1 = (UInt64)State.NodeTotal;
#if DisplayPrediction
var qPredicted1 = 0UL;
#endif
#endif
var vStartDepth = vStartDepthDefault;
if (vDepthLimit.HasValue && vDepthLimit < vStartDepth)
{
vStartDepth = vDepthLimit.Value;
}
for (var vDepth = vStartDepth;
!vDepthLimit.HasValue || vDepth <= vDepthLimit;
vDepth++)
{
#if DisplayDepth
if (UCI.IsDebug)
{
LogInfoNewLine(Level.note);
LogInfo(Level.note, $"Depth = {vDepth} at {DateTime.Now:yyyy-MM-dd HH:mm:ss.ff}");
}
#endif
mValue = beginIteration(vDepth, mValue);
endIteration(vDepth);
#if DisplayDepth
if (UCI.IsDebug)
{
sw.Stop();
var dElapsedMS = (Double)sw.ElapsedMilliseconds;
var qTotal2 = (UInt64)State.NodeTotal;
var qNodeDelta = qTotal2 - qTotal1;
GameState.displayRate(dElapsedMS, qNodeDelta);
#if DisplayPrediction
var qPredicted2 =
#if !TestRegression // Elide final prediction
vDepth == vDepthLimit ? 0UL :
#endif
State.Predict(vStartDepth, vDepth, qNodeDelta);
GameState.DisplayPrediction(dElapsedMS, qNodeDelta, qPredicted1, qPredicted2);
qPredicted1 = qPredicted2;
#endif // DisplayPrediction
qTotal1 = qTotal2;
sw.Restart();
}
#endif // DisplayDepth
if (wMovesToMate.HasValue)
{
var mAbs = Abs(mValue);
if (MateMin <= mAbs && MateMax <= mAbs + wMovesToMate)
{
break; // End search early if a MovesToMate bound has been satisfied
}
}
}
return(mValue);
}
