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//
// This is the modified version of the example electromagnetic/TestEm7/TestEm7.cc
// This code simulates monoenergetic photon pencil beam incident on water cube.   

#include "G4RunManager.hh"
#include "G4UImanager.hh"
#include "Randomize.hh"
#include "DetectorConstruction.hh"
#include "PhysicsList.hh"
#include "PrimaryGeneratorAction.hh"
#include "RunAction.hh"
#include "EventAction.hh"
#include "SteppingAction.hh"
#include "SteppingVerbose.hh"

#ifdef G4VIS_USE
 #include "G4VisExecutive.hh"
#endif

#ifdef G4UI_USE
#include "G4UIExecutive.hh"
#endif
 
int main(int argc,char** argv) {
 
  //choose the Random engine
  CLHEP::HepRandom::setTheEngine(new CLHEP::RanecuEngine);
  
  //my Verbose output class
  G4VSteppingVerbose::SetInstance(new SteppingVerbose);
    
  //Construct the default run manager
  G4RunManager * runManager = new G4RunManager;

  //set mandatory initialization classes
  DetectorConstruction*   det  = new DetectorConstruction();
  PhysicsList*            phys = new PhysicsList();
  
  runManager->SetUserInitialization(det);
  runManager->SetUserInitialization(phys);
  
  //set user action classes
  PrimaryGeneratorAction* kin   = new PrimaryGeneratorAction(det);  
  RunAction*              run   = new RunAction(det,phys,kin);
  EventAction*            event = new EventAction();
  SteppingAction*         step  = new SteppingAction(det,run);
  
  runManager->SetUserAction(kin); 
  runManager->SetUserAction(run); 
  runManager->SetUserAction(event);
  runManager->SetUserAction(step);

  #ifdef G4VIS_USE
   G4VisManager* visManager = new G4VisExecutive;
   visManager->Initialize();
  #endif

  //get the pointer to the User Interface manager 
  G4UImanager* UI = G4UImanager::GetUIpointer();  

  if (argc!=1)   // batch mode  
    {
     G4String command = "/control/execute ";
     G4String fileName = argv[1];
     UI->ApplyCommand(command+fileName);
    }
    
  else           //UI terminal for interactive mode
    {     
     
#ifdef G4UI_USE
      G4UIExecutive * ui = new G4UIExecutive(argc,argv);      
      ui->SessionStart();
      delete ui;
#endif
     }

#ifdef G4VIS_USE
     delete visManager;
#endif     
    
  //job termination
  delete runManager;

  return 0;
}