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

#include "TrackingAction.hh"

#include "HistoManager.hh"
#include "Run.hh"

#include "G4RunManager.hh"
#include "G4SystemOfUnits.hh"
#include "G4Track.hh"

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void TrackingAction::PreUserTrackingAction(const G4Track*)
{
  fNbStep1 = fNbStep2 = 0;
  fTrackLen1 = fTrackLen2 = 0.;
  fTime1 = fTime2 = 0.;
}

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void TrackingAction::UpdateTrackInfo(G4double ekin, G4double trackl, G4double time)
{
  const G4double thermal = 1 * eV;
  if (ekin > thermal) {
    fNbStep1++;
    fTrackLen1 = trackl;
    fTime1 = time;
  }
  else {
    fNbStep2++;
    fTrackLen2 = trackl - fTrackLen1;
    fTime2 = time - fTime1;
  }
}

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void TrackingAction::PostUserTrackingAction(const G4Track* track)
{
  // keep only primary neutron
  //
  G4int trackID = track->GetTrackID();
  if (trackID > 1) return;

  Run* run = static_cast<Run*>(G4RunManager::GetRunManager()->GetNonConstCurrentRun());
  run->SumTrackLength(fNbStep1, fNbStep2, fTrackLen1, fTrackLen2, fTime1, fTime2);

  // histograms
  //
  G4AnalysisManager* analysisManager = G4AnalysisManager::Instance();
  analysisManager->FillH1(1, fNbStep1);
  analysisManager->FillH1(2, fTrackLen1);
  analysisManager->FillH1(3, fTime1);
  analysisManager->FillH1(4, fNbStep2);
  analysisManager->FillH1(5, fTrackLen2);
  analysisManager->FillH1(6, fTime2);
}

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