+ entry->Generator()->FinishRun();
+ }
+}
+
+ void AliGenCocktail::Generate()
+{
+//
+// Generate event
+ TIter next(fEntries);
+ AliGenCocktailEntry *entry = 0;
+ AliGenCocktailEntry *preventry = 0;
+ AliGenerator* gen = 0;
+ if (fHeader) delete fHeader;
+
+
+ fHeader = new AliGenCocktailEventHeader("Cocktail Header");
+
+ TObjArray *partArray = gAlice->GetMCApp()->Particles();
+
+//
+// Generate the vertex position used by all generators
+//
+ if(fVertexSmear == kPerEvent) Vertex();
+
+ TArrayF eventVertex;
+ eventVertex.Set(3);
+ for (Int_t j=0; j < 3; j++) eventVertex[j] = fVertex[j];
+
+ if (!fRandom) {
+ //
+ // Loop over generators and generate events
+ Int_t igen=0;
+ while((entry = (AliGenCocktailEntry*)next())) {
+ if (fUsePerEventRate && (gRandom->Rndm() > entry->Rate())) continue;
+
+ igen++;
+ if (igen ==1) {
+ entry->SetFirst(0);
+ } else {
+ entry->SetFirst((partArray->GetEntriesFast())+1);
+ }
+//
+// Handle case in which current generator needs collision geometry from previous generator
+//
+ gen = entry->Generator();
+ if (gen->NeedsCollisionGeometry())
+ {
+ if (preventry && preventry->Generator()->ProvidesCollisionGeometry())
+ {
+ gen->SetCollisionGeometry(preventry->Generator()->CollisionGeometry());
+ } else {
+ Fatal("Generate()", "No Collision Geometry Provided");
+ }
+ }
+ entry->Generator()->SetVertex(fVertex.At(0), fVertex.At(1), fVertex.At(2));
+ entry->Generator()->Generate();
+ entry->SetLast(partArray->GetEntriesFast());
+ preventry = entry;
+ }
+ } else if (fRandom) {
+ //
+ // Select a generator randomly
+ //
+ Int_t i;
+ Float_t p0 = gRandom->Rndm();
+
+ for (i = 0; i < fNGenerators; i++) {
+ if (p0 < fProb[i]) break;