private void ponderingWorker_DoWork(object sender, DoWorkEventArgs e)
{
//TODO: Kolla så ställningen inte förändrats.
//TODO: Bli av med denna worker?
//Flytta motorn hit?
blobFish.cancelFlag.setValue(0);
EvalResult resultPlace = new EvalResult();
resultPlace.bestMove = null;
if (depthAutoToolStripMenuItem.Checked)
{
minDepth = -1;
}
Thread thread = new Thread(delegate()
{
engineStart(minDepth, game.currentPosition.boardCopy(), resultPlace);
});
thread.Name = "engineThread";
thread.Start();
while (thread.IsAlive)
{
if (ponderingWorker.CancellationPending)
{
blobFish.cancelFlag.setValue(1);
e.Cancel = true;
break;
}
Thread.Sleep(50);
}
e.Result = resultPlace;
}
private void engineStart(int minDepth, Position pos, EvalResult resultPlace)
{
//TODO: Hitta något bättre sätt att göra detta på.
EvalResult res = blobFish.eval(pos, minDepth);
resultPlace.bestMove = res.bestMove;
resultPlace.allMoves = res.allMoves;
resultPlace.allEvals = res.allEvals;
resultPlace.evaluation = res.evaluation;
return;
}
private void ponderingWorker_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
if (e.Error != null)
{
MessageBox.Show(e.Error.Message);
}
else if (e.Cancelled)
{
//Vidtag lämplig åtgärd
}
else
{
try
{
EvalResult res = (EvalResult)e.Result;
if (res.bestMove == null)
{
//blobFish.cancelFlag.setValue(0);
//takeback(1);
setPonderingMode(false);
//throw new Exception("Inget bästa drag!");
}
else
{
setPonderingMode(false);
printEval(res);
if (engineIsToMove())
{
this.playMove(res.bestMove);
}
}
}
catch (Exception exc)
{
MessageBox.Show(exc.Message);
scoresheetBox.Text = "Ett fel inträffade.";
takeback(1);
setPonderingMode(false);
}
//Samlar upp skräp då UI väntar på att användaren skall dra.
if (!engineIsToMove())
{
GC.Collect();
GC.WaitForPendingFinalizers();
}
}
}
static private string testForcedMates()
{
string testName = "Forcerad matt-tester";
string detailedResult = testName + ": " + Environment.NewLine;
int testCounter = 1;
bool testFailed = false;
Engine blobfish = new Engine();
bool makeTest(string FEN, int movesToMate)
{
Position pos = new Position(FEN);
EvalResult result = blobfish.eval(pos, movesToMate + 1);
int plysToMate = (movesToMate * 2) - 1;
bool success = result.evaluation == (pos.whiteToMove ? (2001 - plysToMate) : (-2001 + plysToMate));
if (success)
{
detailedResult += " Test " + testCounter.ToString() + ": Lyckades" + Environment.NewLine;
}
else
{
detailedResult += " Test " + testCounter.ToString() + ": Misslyckades" + Environment.NewLine;
testFailed = true;
}
testCounter++;
return(success);
}
makeTest("r1bqkb1r/pppp1ppp/2n2n2/4p2Q/2B1P3/8/PPPP1PPP/RNB1K1NR w KQkq - 4 4", 1); //Skolmatt
makeTest("r1b1k2r/ppppqppp/2n5/4n3/1PP2B2/5N2/1P1NPPPP/R2QKB1R b KQkq - 0 8", 1); //Budapestmatten
makeTest("8/8/8/8/8/8/6R1/1k2K2R w K - 0 1", 1); //Matt genom rockad
makeTest("3r4/8/8/8/8/8/6R1/k3K2R w K - 0 1", 2); //Matt genom rockad
makeTest("8/5P1k/5K2/8/8/8/8/8 w - - 0 1", 2); //Underpromotering
//5
makeTest("8/6k1/R7/1R6/8/8/8/4K3 w - - 0 1", 2); //Trappstegsmatt
makeTest("r7/ppp2kpp/2nb4/5K2/2PP1P1q/2N5/PP1Q2PP/R4BNR b - - 0 16", 2); //Portugisiskt
makeTest("r4rk1/pp3Npp/1b6/8/2Q5/P6P/1q3PP1/R4RK1 w - - 0 1", 3); //Kvävmatt
makeTest("6k1/ppp3pp/6r1/8/4nP1K/N1Pr4/PP5P/R4R2 b - - 8 26", 3); //Inte lika forcerande matt i tre.
makeTest("8/8/8/5B2/8/6K1/6N1/5k2 w - - 0 1", 5); //Matt med springare och löpare.
if (testFailed)
{
return(detailedResult);
}
else
{
return(testName + ": Felfritt!");
}
}
private void printEval(EvalResult result)
{
int decisiveResult = blobFish.decisiveResult(game.currentPosition, currentMoves);
if (decisiveResult != -2)
{
resultPopUp(decisiveResult);
}
else if (!blobFish.mateableMaterial(game.currentPosition.board))
{
resultPopUp(-1);
}
else if (result.bestMove != null)
{
float eval = result.evaluation;
string textEval;
if (eval > 1000)
{
int plysToMate = (int)(2002 - eval);
textEval = "M" + (plysToMate / 2).ToString();
}
else if (eval < -1000)
{
int plysToMate = (int)(2002 + eval);
textEval = "m-" + (plysToMate / 2).ToString();
}
else
{
textEval = Math.Round(eval, 2).ToString();
}
computerMoveStatusLabel.Text = "Datorn spelade: " + result.bestMove.toString(game.currentPosition);
evalStatusLabel.Text = "Datorns evaluering: " + textEval;
timeSpentStatusLabel.Text = "Förbrukad tid: " + ponderingTime.ToString(@"mm\:ss");
}
else
{
throw new Exception("Odefinierat bästa drag.");
}
}
public EvalResult eval(Position pos, int minDepth)
{
//Om minDepth är -1, skall datorn själv bestämma djup.
if (minDepth == -1)
{
minDepth = automaticDepth(pos);
}
List <Move> moves = allValidMoves(pos, true);
EvalResult result = new EvalResult();
int gameResult = decisiveResult(pos, moves);
if (gameResult != -2)
{
result.evaluation = gameResult;
result.allMoves = new List <Move>();
result.allEvals = null;
return(result); //Ställningen är avgjord.
}
else
{
List <SecureFloat> allEvals = new List <SecureFloat>();
float bestValue = pos.whiteToMove ? float.NegativeInfinity : float.PositiveInfinity;
if (moves.Count == 1)
{
//Spela forcerande drag omedelbart?
EvalResult res = eval(moves[0].execute(pos), minDepth - 1);
result.evaluation = evaluationStep(res.evaluation);
result.allMoves = moves;
result.bestMove = moves[0];
return(result);
}
// Ökar minimum-djupet om antalet tillgängliga drag är färre än de som anges
// i moveIncreaseLimits, vilka återfinns i EngineData.
foreach (int item in moveIncreaseLimits)
{
if (moves.Count <= item)
{
minDepth++;
}
else
{
break;
}
}
SecureFloat globalAlpha = new SecureFloat();
globalAlpha.setValue(float.NegativeInfinity);
SecureFloat globalBeta = new SecureFloat();
globalBeta.setValue(float.PositiveInfinity);
List <Thread> threadList = new List <Thread>();
SecureFloat bestMove = new SecureFloat(0);
for (int i = 0; i < moves.Count; i++)
//foreach (Move currentMove in moves)
{
Move currentMove = moves[i];
SecureFloat newFloat = new SecureFloat();
int iCopy = i;
allEvals.Add(newFloat);
Thread thread = new Thread(delegate()
{
threadStart(currentMove.execute(pos), (sbyte)(minDepth - 1), iCopy, bestMove, newFloat, globalAlpha, globalBeta);
});
thread.Name = currentMove.toString(pos);
thread.Start();
threadList.Add(thread);
}
//result.bestMove = moves[0];
Thread.Sleep(sleepTime);
for (int i = 0; i < allEvals.Count; i++)
{
SecureFloat threadResult = allEvals[i];
float value = threadResult.getValue();
#pragma warning disable CS1718 // Comparison made to same variable
if (value != value) //Kollar om talet är odefinierat.
#pragma warning restore CS1718 // Comparison made to same variable
{
//Om resultatet inte hunnit beräknas.
if (cancelFlag.getValue() != 0)
{
abortAll(threadList);
result.bestMove = null;
result.evaluation = float.NaN;
result.allEvals = null;
Thread.Sleep(10); //För att ge övriga trådar chans att stanna.
return(result);
}
else if (this.moveNowFlag.getValue() != 0)
{
abortAll(threadList);
Thread.Sleep(10); //För att ge övriga trådar chans att stanna.
result.bestMove = moves[(int)bestMove.getValue()];
return(result);
}
Thread.Sleep(sleepTime);
i--;
}
else
{
//Om resultatet är klart.
result.bestMove = moves[(int)bestMove.getValue()];
}
}
if (pos.whiteToMove)
{
result.evaluation = globalAlpha.getValue();
}
else
{
result.evaluation = globalBeta.getValue();
}
result.allEvals = allEvals;
}
result.allMoves = moves;
return(result);
}
