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/// \file RE01SteppingAction.cc
/// \brief Implementation of the RE01SteppingAction class

#include "RE01SteppingAction.hh"

#include "RE01RegionInformation.hh"
#include "RE01TrackInformation.hh"

#include "G4LogicalVolume.hh"
#include "G4Region.hh"
#include "G4Step.hh"
#include "G4StepPoint.hh"
#include "G4SteppingManager.hh"
#include "G4Track.hh"
#include "G4TrackStatus.hh"
#include "G4VPhysicalVolume.hh"

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
RE01SteppingAction::RE01SteppingAction() : G4UserSteppingAction()
{
  ;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
RE01SteppingAction::~RE01SteppingAction()
{
  ;
}

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
void RE01SteppingAction::UserSteppingAction(const G4Step* theStep)
{
  // Suspend a track if it is entering into the calorimeter

  // check if it is alive
  G4Track* theTrack = theStep->GetTrack();
  if (theTrack->GetTrackStatus() != fAlive) {
    return;
  }

  // get region information
  G4StepPoint* thePrePoint = theStep->GetPreStepPoint();
  G4LogicalVolume* thePreLV = thePrePoint->GetPhysicalVolume()->GetLogicalVolume();
  RE01RegionInformation* thePreRInfo =
    (RE01RegionInformation*)(thePreLV->GetRegion()->GetUserInformation());
  G4StepPoint* thePostPoint = theStep->GetPostStepPoint();
  G4LogicalVolume* thePostLV = thePostPoint->GetPhysicalVolume()->GetLogicalVolume();
  RE01RegionInformation* thePostRInfo =
    (RE01RegionInformation*)(thePostLV->GetRegion()->GetUserInformation());

  // check if it is entering to the calorimeter volume
  if (!(thePreRInfo->IsCalorimeter()) && (thePostRInfo->IsCalorimeter())) {
    // if the track had already been suspended at the previous step, let it go.
    RE01TrackInformation* trackInfo =
      static_cast<RE01TrackInformation*>(theTrack->GetUserInformation());
    if (trackInfo->GetSuspendedStepID() > -1) {
      if (fpSteppingManager->GetverboseLevel() > 0) {
        G4cout << "++++ This track had already been suspended at step #"
               << trackInfo->GetSuspendedStepID() << ". Tracking resumed." << G4endl;
      }
    }
    else {
      trackInfo->SetSuspendedStepID(theTrack->GetCurrentStepNumber());
      theTrack->SetTrackStatus(fSuspend);
    }
  }
}
