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/// \file B4bRunData.hh
/// \brief Definition of the B4bRunData class

#ifndef B4bRunData_h
#define B4bRunData_h 1

#include "G4Run.hh"
#include "globals.hh"

#include <array>

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const G4int kAbs = 0;
const G4int kGap = 1;
const G4int kDim = 2;

///  Run data class
///
/// It defines data members to hold the energy deposit and track lengths
/// of charged particles in Absober and Gap layers.
/// 
/// In order to reduce the number of data members a 2-dimensions array 
/// is introduced for each quantity:
/// - fEdep[], fTrackLength[].
///
/// The data are collected step by step in B4bSteppingAction, and
/// the accumulated values are filled in histograms and entuple
/// event by event in B4EventAction.

class B4bRunData : public G4Run
{
public:
  B4bRunData();
  virtual ~B4bRunData();

  void Add(G4int id, G4double de, G4double dl);
  void FillPerEvent();

  void Reset();

  // Get methods
  G4String  GetVolumeName(G4int id) const;
  G4double  GetEdep(G4int id) const;
  G4double  GetTrackLength(G4int id) const; 

private:
  std::array<G4String, kDim>  fVolumeNames;
  std::array<G4double, kDim>  fEdep;
  std::array<G4double, kDim>  fTrackLength; 
};

// inline functions

inline void B4bRunData::Add(G4int id, G4double de, G4double dl) {
  fEdep[id] += de; 
  fTrackLength[id] += dl;
}

inline G4String  B4bRunData::GetVolumeName(G4int id) const {
  return fVolumeNames[id];
}

inline G4double  B4bRunData::GetEdep(G4int id) const {
  return fEdep[id];
}   

inline G4double  B4bRunData::GetTrackLength(G4int id) const {
  return fTrackLength[id];
}

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#endif

