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

#include "TrackingAction.hh"

#include "DetectorConstruction.hh"
#include "Run.hh"
#include "EventAction.hh"

#include "G4RunManager.hh"
#include "G4Positron.hh"
#include "G4PhysicalConstants.hh"

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TrackingAction::TrackingAction(DetectorConstruction* det,EventAction* evt)
:fDetector(det),fEventAct(evt)
{ }
 
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void TrackingAction::PreUserTrackingAction(const G4Track* track )
{
  //get Run
  Run* run = static_cast<Run*>(
             G4RunManager::GetRunManager()->GetNonConstCurrentRun());
             
  // Energy flow initialisation for primary particle
  //
  if (track->GetTrackID() == 1) {
    G4int Idnow = 1;
    if (track->GetVolume() != fDetector->GetphysiWorld()) {
      // unique identificator of layer+absorber
      const G4VTouchable* touchable = track->GetTouchable();
      G4int absorNum = touchable->GetCopyNumber();
      G4int layerNum = touchable->GetReplicaNumber(1);
      Idnow = (fDetector->GetNbOfAbsor())*layerNum + absorNum;
    }
    
    G4double Eflow = track->GetKineticEnergy();
    if (track->GetDefinition() == G4Positron::Positron()) {
      Eflow += 2*electron_mass_c2;
    }
         
    //flux artefact, if primary vertex is inside the calorimeter   
    for (G4int pl=1; pl<=Idnow; ++pl) {run->SumEnergyFlow(pl, Eflow);}
  } else {
    run->AddSecondaryTrack(track);
  }
}

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void TrackingAction::PostUserTrackingAction(const G4Track* track )
{
 // energy leakage
 G4StepStatus status = track->GetStep()->GetPostStepPoint()->GetStepStatus();
 if (status == fWorldBoundary) {
    G4double eleak = track->GetKineticEnergy();
    if (track->GetDefinition() == G4Positron::Positron()) {
      eleak += 2*electron_mass_c2;
    }
    fEventAct->SumEnergyLeak(eleak);
 }
}

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