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/// \file F02PrimaryGeneratorAction.hh
/// \brief Definition of the F02PrimaryGeneratorAction class

#ifndef F02PrimaryGeneratorAction_h
#define F02PrimaryGeneratorAction_h 1

#include "G4VUserPrimaryGeneratorAction.hh"
#include "globals.hh"

class G4ParticleGun;
class G4Event;
class F02DetectorConstruction;
class F02PrimaryGeneratorMessenger;
class G4ParticleDefinition;

//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......

class F02PrimaryGeneratorAction : public G4VUserPrimaryGeneratorAction
{
  public:
    F02PrimaryGeneratorAction(F02DetectorConstruction*);
    ~F02PrimaryGeneratorAction() override;

  public:
    void GeneratePrimaries(G4Event*) override;
    void SetRndmFlag(G4String val) { fRndmFlag = val; }
    void SetXVertex(G4double x);
    void SetYVertex(G4double y);
    void SetZVertex(G4double z);

    static G4String GetPrimaryName();

  private:
    G4ParticleGun* fParticleGun = nullptr;  // pointer a to G4 service class
    F02DetectorConstruction* fDetector = nullptr;  // pointer to the geometry

    F02PrimaryGeneratorMessenger* fGunMessenger = nullptr;  // messenger of this class
    G4String fRndmFlag = "off";  // flag for random impact point

    static G4ParticleDefinition* fgPrimaryParticle;
    G4double fXVertex = 0.;
    G4double fYVertex = 0.;
    G4double fZVertex = 0.;
    G4bool fVertexDefined = false;
};

#endif
