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/// \file electromagnetic/TestEm8/src/StackingAction.cc
/// \brief Implementation of the StackingAction class
//
// $Id: StackingAction.cc,v 1.8 2009-03-06 18:04:23 maire Exp $
// GEANT4 tag $Name: not supported by cvs2svn $
//
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#include "StackingAction.hh"

#include "Run.hh"
#include "StackingMessenger.hh"

#include "G4Track.hh"
#include "G4Step.hh"
#include "G4RunManager.hh"

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StackingAction::StackingAction()
  : G4UserStackingAction(),
    fKillSecondary(false),
    fStackMessenger(0)
{
  fStackMessenger = new StackingMessenger(this);
}

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StackingAction::~StackingAction()
{
  delete fStackMessenger;
}

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G4ClassificationOfNewTrack
StackingAction::ClassifyNewTrack(const G4Track* aTrack)
{
  //stack or delete secondaries
  G4ClassificationOfNewTrack status = fUrgent;

  //keep primary particle
  if (aTrack->GetParentID() == 0 || !fKillSecondary) { return status; }
  
  Run* run
    = static_cast<Run*>(G4RunManager::GetRunManager()->GetNonConstCurrentRun());

  // charged tracks are killed only inside sensitive volumes
  if(aTrack->GetVolume()->GetLogicalVolume()->GetSensitiveDetector() &&
     aTrack->GetDefinition()->GetPDGCharge() != 0.0) 
    {
      run->AddEnergy(aTrack->GetKineticEnergy(), 0); 
      status = fKill;    
    }
  return status;
}

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