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// @Author Chad Lantz

#include "AirSD.hh"
#include "AirHit.hh"

#include "G4HCofThisEvent.hh"
#include "G4Step.hh"
#include "G4ThreeVector.hh"
#include "G4SDManager.hh"
#include "G4ios.hh"
#include "G4Poisson.hh"
#include "G4ParticleTypes.hh"
#include "G4ParticleDefinition.hh"

#include "TString.h"

#include <string>
#include <iostream>
#include <cmath>


/*
 *
 */
AirSD::AirSD(G4String sdName)
  :G4VSensitiveDetector(sdName){
  collectionName.insert(sdName);
  HCID = -1;

}


/*
 *
 */
AirSD::~AirSD(){

}


/* Mandatory method
 *
 */
void AirSD::Initialize(G4HCofThisEvent* HCE){

  hitCollection = new HitsCollection(SensitiveDetectorName,
					      m_modNum);

  std::string name = GetName();

  if(HCID<0)
    { HCID = G4SDManager::GetSDMpointer()->GetCollectionID( name );}

  HCE->AddHitsCollection( HCID, hitCollection );
  G4cout << " HCID " << HCID << " name " << name << G4endl;
}


/* Mandatory method
 *
 */
G4bool AirSD::ProcessHits(G4Step* aStep,G4TouchableHistory*){

  G4Track* theTrack = aStep->GetTrack();

  G4double energy = aStep->GetPreStepPoint()->GetTotalEnergy();
  G4ThreeVector momentum = aStep->GetPreStepPoint()->GetMomentum();

  AirHit* newHit = new AirHit();

  newHit->setTrackID       (aStep->GetTrack()->GetTrackID() );
  newHit->setPos           (aStep->GetTrack()->GetVertexPosition() );
  newHit->setEnergy        (energy);
  newHit->setMomentum      (momentum);

  hitCollection->insert( newHit );

  return true;
}

/* Mandatory method
 *
 */
void AirSD::EndOfEvent(G4HCofThisEvent*){


}