public void tick(Point2D whereIAm) {
PointOfInterest poi;
for (Iterator<PointOfInterest> i = goals.iterator(); i.hasNext(); ) {
poi = i.next();
poi.age();
if (poi.getAge() > AGE_THRESHOLD
|| StaticDiver.getDistanceFromCreature(poi.getLocation(), whereIAm)
< DISTANCE_THRESHOLD) {
i.remove();
}
}
}
