public JungGraphObserver(String name) {
    this.name = name;
    this.hyphadataPid = Configuration.getPid(PAR_HYPHADATA_PROTO);
    this.hyphalinkPid = Configuration.getPid(PAR_HYPHALINK_PROTO);
    this.mycocastPid = Configuration.getPid(PAR_MYCOCAST_PROTO);
    this.period = Configuration.getInt(name + "." + PAR_PERIOD);

    this.walkDelay = Configuration.getInt(name + "." + PAR_WALK_DELAY);
    mainThread = Thread.currentThread();
    this.changeListeners = new HashSet<ChangeListener>();

    visualizer = null;

    // HyphaData.addHyphaDataListener(this);
    // HyphaLink.addHyphaLinkListener(this);
  }
  public PopulateVirtualWorld(String prefix) {
    distribution = Configuration.getInt(prefix + "." + PAR_DISTRIB);
    applicativeLayerId = Configuration.getPid(prefix + "." + APPLICATIVE_LAYER);
    Globals.mapSize = Configuration.getLong(prefix + "." + MAP_SIZE);
    Globals.zoneSize = Configuration.getLong(prefix + "." + ZONE_SIZE);
    Globals.zoneNb = Configuration.getInt(prefix + "." + ZONE_NB);
    Globals.outOfZoneNb = Configuration.getInt(prefix + "." + OUT_OF_ZONE_NB);
    Globals.wSpeed = Configuration.getInt(prefix + "." + WSPEED);
    Globals.tSpeed = Configuration.getInt(prefix + "." + TSPEED);
    Globals.smallZoneSize = Configuration.getInt(prefix + "." + SMALL_ZONE_SIZE);
    Globals.smallZoneNb = Configuration.getInt(prefix + "." + SMALL_ZONE_NB);

    Globals.haltedToHalted = Configuration.getInt(prefix + "." + HTH);
    Globals.haltedToTravelling = Configuration.getInt(prefix + "." + HTT);
    Globals.haltedToWandering = Configuration.getInt(prefix + "." + HTW);

    Globals.travellingToTravelling = Configuration.getInt(prefix + "." + TTT);
    Globals.travellingToHalted = Configuration.getInt(prefix + "." + TTH);
    Globals.travellingToWandering = Configuration.getInt(prefix + "." + TTW);

    Globals.wanderingToWandering = Configuration.getInt(prefix + "." + WTW);
    Globals.wanderingToTravelling = Configuration.getInt(prefix + "." + WTT);
    Globals.wanderingToHalted = Configuration.getInt(prefix + "." + WTH);
    Globals.changeWanderingDirection = Configuration.getInt(prefix + "." + CWD);

    Globals.quiet = Configuration.getBoolean(prefix + "." + QUIET);
  }