seems to work with different geometries

src/SteppingAction.cc

@@ -41,10 +41,8 @@ namespace B4a
 
 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
-SteppingAction::SteppingAction(const DetectorConstruction* detConstruction,
-                               EventAction* eventAction)
-  : fDetConstruction(detConstruction),
-    fEventAction(eventAction)
+SteppingAction::SteppingAction(EventAction* eventAction)
+  : fEventAction(eventAction)
 {}
 
 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
@@ -62,14 +60,14 @@ void SteppingAction::UserSteppingAction(const G4Step* step)
   //return;
   
   //find the layer through the constructionwrapper that corresponds to the volume
-  auto cw = fDetConstruction->getConstructionWrapper();
+  auto cw = DetectorConstruction::getDetectorConstruction()->getConstructionWrapper();
   if(cw == nullptr){
     G4cout << "ConstructionWrapper not found" << G4endl;
     throw std::runtime_error("ConstructionWrapper not found");
   }
 
   
-  auto sensor = fDetConstruction->getConstructionWrapper()->getSensorByVolume(volume);
+  auto sensor = DetectorConstruction::getDetectorConstruction()->getConstructionWrapper()->getSensorByVolume(volume);
   if(sensor == nullptr){
     //can simply be not an active volume, so no need to throw an error
     //G4cout << "Sensor not found in" << volume->GetName() << G4endl; //DEBUG