#ifndef ALIGENHIJINGEVENTHEADER_H
#define ALIGENHIJINGEVENTHEADER_H

/* Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 * See cxx source for full Copyright notice                               */

/* $Id$ */

#include "AliGenEventHeader.h"
#include <TLorentzVector.h>

class AliGenHijingEventHeader : public AliGenEventHeader
{
 public:

  AliGenHijingEventHeader(const char* name){;}
  AliGenHijingEventHeader(){;}
  virtual ~AliGenHijingEventHeader() {}
  // Getters
  Float_t TotalEnergy()  {return fTotalEnergy;} 
  Int_t   HardScatters() {return fNHardScatters;}
  Int_t   ProjectileParticipants()  {return fNProjectileParticipants;}
  Int_t   TargetParticipants()      {return fNTargetParticipants;}
  Int_t   Spectatorsn()	{return fSpecn;}
  Int_t   Spectatorsp()	{return fSpecp;}
  Int_t   NN()    {return fNNColl;}
  Int_t   NNw()   {return fNNwColl;}
  Int_t   NwN()   {return fNwNColl;}
  Int_t   NwNw()  {return fNwNwColl;}
  Int_t   Trials() {return fTrials;}
  
	  
  // Setters
  void SetTotalEnergy(Float_t energy)  {fTotalEnergy=energy;}
  void SetHardScatters(Int_t n)  {fNHardScatters=n;}
  void SetParticipants(Int_t np, Int_t nt)
      {fNProjectileParticipants=np, fNTargetParticipants=nt;}
  void SetCollisions(Int_t nn, Int_t nnw, Int_t nwn, Int_t nwnw)
      {fNNColl=nn, fNNwColl=nnw, fNwNColl=nwn,  fNwNwColl=nwnw;}
  void SetSpectators(Int_t nspecn, Int_t nspecp)
      {fSpecn=nspecn, fSpecp=nspecp;}
  void SetJets(TLorentzVector* jet1, TLorentzVector* jet2,
	       TLorentzVector* jet3, TLorentzVector* jet4)
      {fJet1 = *jet1; fJet2 = *jet2; fJetFsr1 = *jet3; fJetFsr2 = *jet4;}
  void GetJets(TLorentzVector& jet1, TLorentzVector& jet2,
	       TLorentzVector& jet3, TLorentzVector& jet4)  
      {jet1 = fJet1; jet2 = fJet2; jet3 = fJetFsr1; jet4 = fJetFsr2;}
  void SetTrials(Int_t trials) {fTrials = trials;}
	  
protected:
  Float_t fTotalEnergy;              // Total energy of produced particles
  Int_t   fNHardScatters;            // Number of hard scatterings
  Int_t   fNProjectileParticipants;  // Number of projectiles participants
  Int_t   fNTargetParticipants;      // Number of target participants
  Int_t   fNNColl;                   // Number of N-N collisions
  Int_t   fNNwColl;                  // Number of N-Nwounded collisions
  Int_t   fNwNColl;                  // Number of Nwounded-N collisons
  Int_t   fNwNwColl;                 // Number of Nwounded-Nwounded collisions
  Int_t   fSpecn;                    // Number of spectators neutrons
  Int_t   fSpecp;                    // Number of spectators protons
  Int_t   fTrials;                   // Number of trials to fulfill trigger condition
  
  TLorentzVector  fJet1;             // 4-Momentum-Vector of first   triggered jet  
  TLorentzVector  fJet2;             // 4-Momentum-Vector of second  triggered jet     
  TLorentzVector  fJetFsr1;          // 4-Momentum-Vector of first   triggered jet  
  TLorentzVector  fJetFsr2;          // 4-Momentum-Vector of second  triggered jet     
  
  ClassDef(AliGenHijingEventHeader,4) // Event header for hijing event
};

#endif