#ifndef TMBMCevtInfo_H
#define TMBMCevtInfo_H

//////////////////////////////////////////////////////////////////////////
//                                                                      //
//   file: TMBMCevtInfo.hpp                                                  //
//   TMBTree MCevt class 
//     has MCevt information
//
//   created: 23-Nov-2002  Wade Fisher                                 
//                                                                      //
//////////////////////////////////////////////////////////////////////////

#ifndef ROOT_TObject
#include "TObject.h"
#endif

class TMBMCevtInfo : public TObject {

private:
 
  Int_t            _run;
  Int_t          _evtid;
  Int_t          _nreac;      // reactiob number
  Float_t        _xsect;      //cross section in microbarns
  Float_t       _weight;
  Float_t          _qsq;
  Float_t         _shat;
  Float_t         _that;
  Float_t         _uhat;

  //  Note that the output chunk (Geant) is not counted
  Int_t           _nchunks;  // original number of input chunks
  Int_t           _nvtx[20]; // number of vertices in chunk i 
  Int_t           _npart[20]; // number of particles in chunk i 
   

public:
  TMBMCevtInfo();
  
  TMBMCevtInfo(Int_t run, Int_t evtid, Int_t nreac, Float_t xsect, Float_t weight, Float_t qsq,  Float_t shat, Float_t that, Float_t uhat,Int_t nchunks, Int_t nvtx[20], Int_t npar[20] ); 
  
  TMBMCevtInfo ( const TMBMCevtInfo & evt ); // copy constructor
     
  void Set(Int_t run, Int_t evtid, Int_t nreac, Float_t xsect, Float_t weight, Float_t qsq,  Float_t shat, Float_t that, Float_t uhat,Int_t nchunks, Int_t nvtx[20], Int_t npar[20]);

  ~TMBMCevtInfo();
  
  Int_t          run() const { return _run; }
  Int_t          evtid() const { return _evtid; }
  Int_t          nreac() const { return _nreac; }
  Float_t        xsect() const { return _xsect; }
  Float_t       weight() const { return _weight; }
  Float_t          qsq() const { return _qsq; }
  Float_t         shat() const { return _shat; }
  Float_t         that() const { return _that; }
  Float_t         uhat() const { return _uhat; }
  Int_t           nchunks() const{return _nchunks;}
  Int_t          nvtx(int i)const {return _nvtx[i];}
  Int_t          npart(int i)const {return _npart[i];}

   ClassDef(TMBMCevtInfo, 2)   //TMBTree MCevt class
};

#endif