@Override
 public void handleEvent(PersonArrivalEvent event) {
   try {
     if (isTransitScenario) {
       if (transitDriverIds.contains(event.getPersonId())) return;
     }
     TravellerChain chain = chains.get(event.getPersonId());
     switch (event.getLegMode()) {
       case "walk":
       case "transit_walk":
         {
           Journey journey = chain.getJourneys().getLast();
           Walk walk = journey.getWalks().getLast();
           walk.setDest(network.getLinks().get(event.getLinkId()).getCoord());
           walk.setEndTime(event.getTime());
           walk.setDistance(walk.getDuration() * walkSpeed);
           break;
         }
       case TransportMode.car:
         {
           Journey journey = chain.getJourneys().getLast();
           journey.setDest(network.getLinks().get(event.getLinkId()).getCoord());
           journey.setEndTime(event.getTime());
           Trip trip = journey.getTrips().getLast();
           trip.setDistance(journey.getDistance());
           trip.setEndTime(event.getTime());
           chain.inCar = false;
           break;
         }
       case "pt":
         if (isTransitScenario) {
           Journey journey = chain.getJourneys().getLast();
           Trip trip = journey.getTrips().getLast();
           trip.setDest(network.getLinks().get(event.getLinkId()).getCoord());
           trip.setEndTime(event.getTime());
           journey.setPossibleTransfer(new Transfer());
           journey.getPossibleTransfer().setStartTime(event.getTime());
           journey.getPossibleTransfer().setFromTrip(trip);
         } else {
           Journey journey = chain.getJourneys().getLast();
           journey.setEndTime(event.getTime());
           journey.setDest(network.getLinks().get(event.getLinkId()).getCoord());
           journey.setEndTime(event.getTime());
         }
         break;
       default:
         Journey journey = chain.getJourneys().getLast();
         journey.setEndTime(event.getTime());
         journey.setDest(network.getLinks().get(event.getLinkId()).getCoord());
         journey.setEndTime(event.getTime());
         break;
     }
   } catch (Exception e) {
     System.err.println(e.getStackTrace());
     System.err.println(event.toString());
   }
 }
  @Override
  public void handleEvent(ActivityStartEvent event) {
    try {
      if (isTransitScenario) {
        if (transitDriverIds.contains(event.getPersonId())) return;
      }
      TravellerChain chain = chains.get(event.getPersonId());
      boolean beforeInPT = chain.isInPT();
      if (event.getActType().equals(PtConstants.TRANSIT_ACTIVITY_TYPE)) {
        chain.setInPT(true);

      } else {
        chain.setInPT(false);
        chain.traveling = false;
        Activity act = chain.addActivity();
        act.setCoord(network.getLinks().get(event.getLinkId()).getCoord());
        act.setFacility(event.getFacilityId());
        act.setStartTime(event.getTime());
        act.setType(event.getActType());
        // end the preceding journey
        Journey journey = chain.getJourneys().getLast();
        journey.setDest(act.getCoord());
        journey.setEndTime(event.getTime());
        journey.setToAct(act);
        if (beforeInPT) journey.getWalks().getLast().setEgressWalk(true);
      }
    } catch (Exception e) {
      System.err.println(e.getStackTrace());
      System.err.println(event.toString());
      ;
    }
  }