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//
// Hadrontherapy advanced example for Geant4
// See more at: https://twiki.cern.ch/twiki/bin/view/Geant4/AdvancedExamplesHadrontherapy

#include "G4SystemOfUnits.hh"
#include "G4Event.hh"
#include "G4EventManager.hh"
#include "G4HCofThisEvent.hh"
#include "G4VHitsCollection.hh"
#include "G4SDManager.hh"
#include "G4VVisManager.hh"

#include "HadrontherapyEventAction.hh"
#include "HadrontherapyDetectorHit.hh"
#include "HadrontherapyDetectorSD.hh"
#include "HadrontherapyDetectorConstruction.hh"
#include "HadrontherapyMatrix.hh"
#include "HadrontherapyEventActionMessenger.hh"

/////////////////////////////////////////////////////////////////////////////
HadrontherapyEventAction::HadrontherapyEventAction() :
  drawFlag("all" ),printModulo(10), pointerEventMessenger(0)
{ 
  hitsCollectionID = -1;
  pointerEventMessenger = new HadrontherapyEventActionMessenger(this);
}

/////////////////////////////////////////////////////////////////////////////
HadrontherapyEventAction::~HadrontherapyEventAction()
{
 delete pointerEventMessenger;
}  

/////////////////////////////////////////////////////////////////////////////
void HadrontherapyEventAction::BeginOfEventAction(const G4Event* evt)
{ 
  G4int evtNb = evt->GetEventID();
  //printing survey
  if (evtNb%printModulo == 0)
     G4cout << "\n---> Begin of Event: " << evtNb << G4endl;
   
  G4SDManager* pSDManager = G4SDManager::GetSDMpointer();
  if(hitsCollectionID == -1)
    hitsCollectionID = pSDManager -> GetCollectionID("HadrontherapyDetectorHitsCollection");
  
}

/////////////////////////////////////////////////////////////////////////////
void HadrontherapyEventAction::EndOfEventAction(const G4Event* evt)
{ 
  if(hitsCollectionID < 0)
  return;
  G4HCofThisEvent* HCE = evt -> GetHCofThisEvent();

  // Clear voxels hit list 
  HadrontherapyMatrix* matrix = HadrontherapyMatrix::GetInstance();
  if (matrix) matrix -> ClearHitTrack(); 

  if(HCE)
  {
    HadrontherapyDetectorHitsCollection* CHC = (HadrontherapyDetectorHitsCollection*)(HCE -> GetHC(hitsCollectionID));
    if(CHC)
     {
       if(matrix)
	  { 
	      // Fill the matrix with the information: voxel and associated energy deposit 
          // in the detector at the end of the event

	  G4int HitCount = CHC -> entries();
	  for (G4int h=0; h<HitCount; h++)
	    {
	      G4int i = ((*CHC)[h]) -> GetXID();
	      G4int j = ((*CHC)[h]) -> GetYID();
	      G4int k = ((*CHC)[h]) -> GetZID();
              G4double energyDeposit = ((*CHC)[h]) -> GetEdep();
              matrix -> Fill(i, j, k, energyDeposit/MeV);              
	    }
	  }
    }
  }
}

