PndPythia8Direct.h

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//****************************************************************************
//*                   This file is part of PandaRoot.                        *
//*                                                                          *
//*            PandaRoot is distributed under the terms of the               *
//*              GNU General Public License (GPL) version 3,                 *
//*                 copied verbatim in the file "LICENSE".                   *
//*                                                                          *
//*  Copyright (C) 2006 - 2024 FAIR GmbH and copyright holders of PandaRoot  *
//*     The copyright holders are listed in the file "COPYRIGHTHOLDERS".     *
//*               The authors are listed in the file "AUTHORS".              *
//****************************************************************************

#ifndef PNDP8DIRECT_H
#define PNDP8DIRECT_H 1

#include "TROOT.h"
#include "PndTargetGenerator.h"

#ifdef __CINT__
#define _DLFCN_H_
#define _DLFCN_H
#endif

#include "Pythia.h"
#include "TRandom1.h"
#include "TRandom.h"

#include <memory>

class FairPrimaryGenerator;
//using namespace Pythia8;

// Wrap gRandom to Pythia8
class PyTrGRng : public Pythia8::RndmEngine {
 public:
  PyTrGRng(){};
  virtual ~PyTrGRng(){};

  Double_t flat() { return gRandom->Rndm(); };
};

class PndPythia8Direct : public PndTargetGenerator {
 public:
  PndPythia8Direct();

  PndPythia8Direct(Double_t mom, const char *par = "");

  virtual ~PndPythia8Direct();

  Bool_t ReadEvent(FairPrimaryGenerator *);
  void AddParameter(const char *);
  void SetParameters(const char *);
  void Print(); 

  void SetMom(Double_t mom) { fMom = mom; };

  virtual Bool_t Init(); 


 private:
  Pythia8::Pythia fPythia;                            
#if (PYTHIA_VERSION_INTEGER >= 8310)                  // PYTHIA 8310 changed to shared_ptr
  std::shared_ptr<Pythia8::RndmEngine> fRandomEngine; 
#else
  Pythia8::RndmEngine *fRandomEngine; 
#endif

  const char *fParams[100];  

 protected:
  Double_t fMom;      // pbar momentum
  Int_t fPar_it;      // number of parameter lines

  ClassDef(PndPythia8Direct, 1);
};

#endif /* !PNDP8GENERATOR_H */