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#include "SteppingAction.hh"
#include "Run.hh"
#include "EventAction.hh"
#include "HistoManager.hh"

#include "G4RunManager.hh"

#include "G4ParticleDefinition.hh"
#include "G4Gamma.hh"
                           
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SteppingAction::SteppingAction(EventAction* event)
: G4UserSteppingAction(), fEventAction(event)
{ }

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SteppingAction::~SteppingAction()
{ }

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void SteppingAction::UserSteppingAction(const G4Step* aStep)
{
  // count processes
  // 
  const G4StepPoint* endPoint = aStep->GetPostStepPoint();
  const G4VProcess* process   = endPoint->GetProcessDefinedStep();
  Run* run = static_cast<Run*>(
        G4RunManager::GetRunManager()->GetNonConstCurrentRun());
  run->CountProcesses(process);
  
  //kill particles leaving graphite
  const G4Track* aTrack = aStep->GetTrack();
  const G4ParticleDefinition* particle = aTrack->GetParticleDefinition();
  if (particle != G4Gamma::Gamma()) {
    const G4StepPoint* point1 = aStep->GetPreStepPoint();
    const G4StepPoint* point2 = aStep->GetPostStepPoint();
    G4String volumeName = point1->GetPhysicalVolume()->GetName();
    if ((volumeName == "graphite")&&(point2->GetStepStatus() == fGeomBoundary)) 
      { G4Track* track = (G4Track*)aTrack;
        track->SetTrackStatus(fStopAndKill); };
  };
  
  // energy deposit
  //
  G4double edepStep = aStep->GetTotalEnergyDeposit();
  if (edepStep <= 0.) return; 
  fEventAction->AddEdep(edepStep);
  
 //longitudinal profile of deposited energy
 //        
 G4ThreeVector prePoint  = aStep->GetPreStepPoint() ->GetPosition();
 G4ThreeVector postPoint = aStep->GetPostStepPoint()->GetPosition();
 G4ThreeVector point = prePoint + G4UniformRand()*(postPoint - prePoint);
 G4double r = point.mag();
 G4AnalysisManager* analysisManager = G4AnalysisManager::Instance();
 analysisManager->FillH1(2, r, edepStep);   
}

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