SteppingAction.h

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#ifndef SimG4Core_SteppingAction_H
#define SimG4Core_SteppingAction_H

#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "SimG4Core/Notification/interface/SimActivityRegistry.h"

#include "G4LogicalVolume.hh"
#include "G4Region.hh"
#include "G4UserSteppingAction.hh"
#include "G4VPhysicalVolume.hh"
#include "G4VTouchable.hh"
#include "G4Track.hh"

#include <string>
#include <vector>

class EventAction;
class CMSSteppingVerbose;

enum TrackStatus { 
  sAlive = 0, 
  sKilledByProcess = 1, 
  sDeadRegion = 2, 
  sOutOfTime = 3, 
  sLowEnergy = 4, 
  sLowEnergyInVacuum = 5
};

class SteppingAction: public G4UserSteppingAction {

public:
  explicit SteppingAction(EventAction * ea, const edm::ParameterSet & ps, 
              const CMSSteppingVerbose*, bool hasW);
  ~SteppingAction() override;

  void UserSteppingAction(const G4Step * aStep) final;
  
  SimActivityRegistry::G4StepSignal m_g4StepSignal;

private:

  bool initPointer();

  bool isInsideDeadRegion(const G4Region* reg) const;
  bool isOutOfTimeWindow(G4Track* theTrack, const G4Region* reg) const;
  bool isThisVolume(const G4VTouchable* touch, const G4VPhysicalVolume* pv) const;

  bool isLowEnergy(const G4Step * aStep) const;
  void PrintKilledTrack(const G4Track*, const TrackStatus&) const;

  EventAction                   *eventAction_;
  const G4VPhysicalVolume       *tracker, *calo;
  const CMSSteppingVerbose*     steppingVerbose;
  double                        theCriticalEnergyForVacuum;
  double                        theCriticalDensity;
  double                        maxTrackTime;
  std::vector<double>           maxTrackTimes, ekinMins;
  std::vector<std::string>      maxTimeNames, ekinNames, ekinParticles;
  std::vector<std::string>      deadRegionNames;
  std::vector<const G4Region*>  maxTimeRegions;
  std::vector<const G4Region*>  deadRegions;
  std::vector<G4LogicalVolume*> ekinVolumes;
  std::vector<int>              ekinPDG;
  unsigned int                  numberTimes;
  unsigned int                  numberEkins;
  unsigned int                  numberPart;
  unsigned int                  ndeadRegions;

  bool                          initialized;
  bool                          killBeamPipe;
  bool                          hasWatcher;
};

inline bool SteppingAction::isInsideDeadRegion(const G4Region* reg) const
{
  bool res = false;
  for(unsigned int i=0; i<ndeadRegions; ++i) {
    if(reg == deadRegions[i]) {
      res = true;
      break;
    }
  }
  return res;
}

inline bool 
SteppingAction::isOutOfTimeWindow(G4Track* theTrack, const G4Region* reg) const
{
  double tofM = maxTrackTime;
  for (unsigned int i=0; i<numberTimes; ++i) {
    if (reg == maxTimeRegions[i]) {
      tofM = maxTrackTimes[i];
      break;
    }
  }
  return (theTrack->GetGlobalTime() > tofM) ? true : false;
}

inline bool SteppingAction::isThisVolume(const G4VTouchable* touch, 
                     const G4VPhysicalVolume* pv) const
{
  int level = (touch->GetHistoryDepth())+1;
  return (level >= 3) ? (touch->GetVolume(level - 3) == pv) : false; 
}

#endif