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

// This example is provided by the Geant4-DNA collaboration
// Any report or published results obtained using the Geant4-DNA software
// shall cite the following Geant4-DNA collaboration publication:
// Med. Phys. 37 (2010) 4692-4708
// J. Comput. Phys. 274 (2014) 841-882
// The Geant4-DNA web site is available at http://geant4-dna.org
//
//

#ifndef CHEM5_PrimaryKiller_h
#define CHEM5_PrimaryKiller_h 1

#include <G4THitsMap.hh>
#include <G4UImessenger.hh>
#include <G4VPrimitiveScorer.hh>

class G4UIcmdWithADoubleAndUnit;

/** \file PrimaryKiller.hh*/

// Description:
//   Kill the primary particle:
//   - either after a given energy loss
//   - or after the primary particle has reached a given energy

class PrimaryKiller : public G4VPrimitiveScorer, public G4UImessenger
{
  private:
    G4double fELoss = 0;  // cumulated energy loss by the primary

    G4double fELossRange_Min = DBL_MAX;  // fELoss from which the primary is killed
    G4double fELossRange_Max = DBL_MAX;  // fELoss from which the event is aborted
    G4double fKineticE_Min = 0;  // kinetic energy below which the primary is killed
    G4UIcmdWithADoubleAndUnit* fpELossUI = nullptr;
    G4UIcmdWithADoubleAndUnit* fpAbortEventIfELossUpperThan = nullptr;

  public:
    explicit PrimaryKiller(G4String name, G4int depth = 0);

    ~PrimaryKiller() override = default;

    /** Set energy under which the particle should be
     killed*/
    inline void SetEnergyThreshold(G4double energy) { fKineticE_Min = energy; }

    /** Set the energy loss from which the primary is
     killed*/
    inline void SetMinLossEnergyLimit(G4double energy) { fELossRange_Min = energy; }

    /** Set the energy loss from which the event is
     aborted*/
    inline void SetMaxLossEnergyLimit(G4double energy) { fELossRange_Max = energy; }

    /** Method related to G4UImessenger
        used to control energy cuts through macro file
     */
    void SetNewValue(G4UIcommand* command, G4String newValue) override;

  protected:
    G4bool ProcessHits(G4Step*, G4TouchableHistory*) override;

  public:
    void Initialize(G4HCofThisEvent*) override;
    inline void Clear(){ fELoss = 0;}
};
#endif
