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//
/// \file TrackingAction.cc
/// \brief Implementation of the TrackingAction class
//
// 
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#include "TrackingAction.hh"
#include "B1EventAction.hh"
#include "TrackingMessenger.hh"

#include "G4Track.hh"
#include "G4ParticleTypes.hh"
#include "G4IonTable.hh"
#include "G4RunManager.hh"

#include "G4SystemOfUnits.hh"
#include "G4UnitsTable.hh"

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TrackingAction::TrackingAction(B1EventAction* eventAction)
:G4UserTrackingAction(),
 fEvent(eventAction),fTrackMessenger(0),
 fFullChain(true)
 
{
  fTrackMessenger = new TrackingMessenger(this);   
  
}

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TrackingAction::~TrackingAction()
{
  delete fTrackMessenger;
}

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void TrackingAction::PreUserTrackingAction(const G4Track* track)
{
  
         
  G4ParticleDefinition* particle = track->GetDefinition();
  G4String name   = particle->GetParticleName();
  fCharge = particle->GetPDGCharge();
  fMass   = particle->GetPDGMass();  
    
  G4double Ekin = track->GetKineticEnergy();
  G4int ID      = track->GetTrackID();
  
  G4bool condition = false;
  
  // check LifeTime
  //
  G4double meanLife = particle->GetPDGLifeTime();
  
  
 
  //Ion
  //
  if (fCharge > 2.) {
    //build decay chain
    if (ID == 1) fEvent->AddDecayChain(name);
      else       fEvent->AddDecayChain(" ---> " + name);
    // 
    //full chain: put at rest; if not: kill secondary      
    G4Track* tr = (G4Track*) track;
    if (fFullChain) { tr->SetKineticEnergy(0.);
                      tr->SetTrackStatus(fStopButAlive);}
      else if (ID>1) tr->SetTrackStatus(fStopAndKill);
    //
    
  }
  
  //example of saving random number seed of this fEvent, under condition
  //
  ////condition = (ih == 3);
  //if (condition) G4RunManager::GetRunManager()->rndmSaveThisEvent();
}

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