BLKillTrack.hh

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//      BLKillTrack.hh
/*
This source file is part of G4beamline, http://g4beamline.muonsinc.com
Copyright (C) 2003,2004,2005,2006 by Tom Roberts, all rights reserved.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

http://www.gnu.org/copyleft/gpl.html
*/

#ifndef BLKILLTRACK_HH
#define BLKILLTRACK_HH

#include "BLParam.hh"

/**     class BLKillTrack - class to kill tracks.
 *
 *      Any BLElement that wants to kill tracks that enter a given physical 
 *      volume (e.g. a box command with kill=1) should register an
 *      instance of this class with the BLManager, associated with the
 *      physical volume.
 **/
class BLKillTrack : public BLManager::SteppingAction {
        bool verbose;
        G4String name;
public:
        BLKillTrack(G4String &_name) : BLManager::SteppingAction(), name(_name)
        { 
                verbose = Param.getInt("steppingVerbose") != 0;
        }
        void UserSteppingAction(const G4Step *step) {
                G4Track *track = step->GetTrack();
                track->SetTrackStatus(fStopAndKill);
                if(verbose) printf("Track killed by '%s' with kill=1\n",
                        name.c_str());
        }
};

#endif // BLKILLTRACK_HH