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/// \file ExN04SteppingAction.cc
/// \brief Implementation of the ExN04SteppingAction class

#include "ExN04SteppingAction.hh"

#include "G4ParticleDefinition.hh"
#include "G4ParticleTypes.hh"
#include "G4Step.hh"
#include "G4StepPoint.hh"
#include "G4SteppingManager.hh"
#include "G4Track.hh"
#include "G4TrackStatus.hh"
#include "G4VPhysicalVolume.hh"

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
ExN04SteppingAction::ExN04SteppingAction() : G4UserSteppingAction() {}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
ExN04SteppingAction::~ExN04SteppingAction() {}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
void ExN04SteppingAction::UserSteppingAction(const G4Step* theStep)
{
  G4Track* theTrack = theStep->GetTrack();

  // check if it is alive
  if (theTrack->GetTrackStatus() != fAlive) {
    return;
  }

  // check if it is primary
  if (theTrack->GetParentID() != 0) {
    return;
  }

  // check if it is NOT muon
  G4ParticleDefinition* particleType = theTrack->GetDefinition();
  if ((particleType == G4MuonPlus::MuonPlusDefinition())
      || (particleType == G4MuonMinus::MuonMinusDefinition()))
  {
    return;
  }

  // check if it is entering to the calorimeter volume
  G4StepPoint* thePrePoint = theStep->GetPreStepPoint();
  G4VPhysicalVolume* thePrePV = thePrePoint->GetPhysicalVolume();
  G4String thePrePVname = thePrePV->GetName();
  if (thePrePVname.substr(0, 4) == "calo") {
    return;
  }
  G4StepPoint* thePostPoint = theStep->GetPostStepPoint();
  G4VPhysicalVolume* thePostPV = thePostPoint->GetPhysicalVolume();
  G4String thePostPVname = thePostPV->GetName();
  if (thePostPVname.substr(0, 4) != "calo") {
    return;
  }

  // then suspend the track
  theTrack->SetTrackStatus(fSuspend);
}
