public NoeudP(NoeudP pere, Position p, int N)
{
this.pere = pere;
this.p = p;
fils = new NoeudP[this.p.NbCoups];
cross = new int[N];
win = new int[N];
}
public NoeudP MeilleurFils()
{
if (fils[indiceMeilleurFils] != null)
{
return(this.fils[indiceMeilleurFils]);
}
Position q = p.Clone();
q.EffectuerCoup(indiceMeilleurFils);
fils[indiceMeilleurFils] = new NoeudP(this, q, cross.Length);
return(this.fils[indiceMeilleurFils]);
}
public override int Jouer(Position p)
{
Func <int, int, float> phi = (W, C) => (a + W) / (b + C);
racine = null;
int j = 0;
while (racine == null)
{
if (memoire == null)
{
racine = new NoeudP(null, p, NbrThreads); break;
}
if (memoire[j] == null)
{
racine = new NoeudP(null, p, NbrThreads); break;
}
if (p.Equals((object)memoire[j].p))
{
racine = memoire[j];
}
j++;
}
int iter = j;
sw.Restart();
Task <int>[] tblthread = new Task <int> [NbrThreads];
for (int k = 0; k < NbrThreads; k++)
{
int indiceThread = k;
tblthread[indiceThread] = Task.Run(() => Thread(phi, indiceThread));
iter = tblthread[indiceThread].Result + iter;
}
Task.WaitAll(tblthread);
racine.CalculMeilleurFils(phi);
Console.WriteLine("{0} itérations", iter);
//Console.WriteLine(racine.fils);
memoire = racine.fils[racine.indiceMeilleurFils].fils;
return(racine.indiceMeilleurFils);
}
public int Thread(Func <int, int, float> phi, int iff)
{
lock (verrou)
{
int iter = 0;
while (sw.ElapsedMilliseconds < temps)
{
NoeudP no = racine;
int SommeDesCross = 0;
do // Sélection
{
no.CalculMeilleurFils(phi);
no = no.MeilleurFils();
SommeDesCross = 0;
for (int j = 0; j < no.cross.Length; j++)
{
SommeDesCross = SommeDesCross + no.cross[j];
}
} while (SommeDesCross > 0 && no.fils.Length > 0);
int re = JeuHasard(no.p); // Simulation
while (no != null) // Rétropropagation
{
no.cross[iff] += 2;
no.win[iff] += re;
no = no.pere;
}
iter++;
}
return(iter);
}
}
