QuirkWatcher.cxx

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/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
 
#include "G4TrackStatus.hh"
#include "G4LorentzVector.hh"
 
#include "Quirk.h"
#include "InfracolorForce.h"
#include "QuirkWatcher.h"
 
#include "CxxUtils/checker_macros.h"
 
QuirkWatcher::QuirkWatcher() : G4VProcess(G4String("QuirkWatcher")) {
    enableAtRestDoIt = false;
    enableAlongStepDoIt = false;
}
 
QuirkWatcher::~QuirkWatcher() {}
 
G4double QuirkWatcher::PostStepGetPhysicalInteractionLength(
    const G4Track&, //track
    G4double, //previousStepSize
    G4ForceCondition* condition
) {
    *condition = StronglyForced;
    return DBL_MAX;
}
 
G4VParticleChange* QuirkWatcher::PostStepDoIt(
    const G4Track& track,
    const G4Step& //stepData
) {
    // Get infracolor string
    auto part_nc ATLAS_THREAD_SAFE = // track should really be non-const in Geant4 interface
      const_cast<G4ParticleDefinition*>(track.GetParticleDefinition());
    Quirk* quirkDef = dynamic_cast<Quirk*>(part_nc);
    if (quirkDef == 0) {
        G4Exception("QuirkWatcher::PostStepDoIt", "NonQuirk", FatalErrorInArgument, "QuirkWatcher run on non-quirk particle");
        std::abort();
    }
    InfracolorForce& string = quirkDef->GetStringIn();
 
    if (track.GetCurrentStepNumber() > 1 && !string.IsSourceInitialized()) {
        // if the partner quirk is still alive, clear its string state too so that it
        // doesn't try to push a string vector to the orphan quirk and crash
        // leave as just a warning so that the event can continue and the hits recorded so far are kept, like for looperKiller'd tracks
        string.Clear();
        string.GetReactionForce()->Clear();
        G4Exception(
            "QuirkWatcher::PostStepDoIt",
            "QuirkMissingPartner",
            JustWarning,
            "QuirkWatcher: missing partner for quirk; killing orphan track"
        );
        m_particleChange.Initialize(track);
        m_particleChange.ProposeTrackStatus(fStopAndKill);
        return &m_particleChange;
    }
 
    // Update track status
    G4TrackStatus stat = track.GetTrackStatus();
    if (stat == fStopButAlive) {
        stat = fAlive;
    }
    if (stat == fAlive || stat == fSuspend) {
        G4bool passControl = !string.HasNextStringVector();
        //G4bool passControl = !string.HasNextStringVector() || (string.GetSumStrings().t() < string.GetReactionForce()->GetSumStrings().t());
        if (passControl) {
            if (string.IsSourceAlive()) {
                stat = fSuspend;
            } else {
                stat = fStopAndKill;
            }
        }
    }
    if (stat == fStopAndKill || stat == fKillTrackAndSecondaries) {
        string.TrackKilled();
    }
 
    m_particleChange.Initialize(track);
    m_particleChange.ProposeTrackStatus(stat);
    return &m_particleChange;
}