public void tick(int dt) {
if (fo != null) {
for (Collection<Gob> fol : fo) {
for (Gob fo : fol) fo.ctick(dt);
}
}
}
public void ctick() {
long now;
int dt;
now = System.currentTimeMillis();
if (lastctick == 0) dt = 0;
else dt = (int) (System.currentTimeMillis() - lastctick);
synchronized (this) {
for (Gob g : objs.values()) g.ctick(dt);
}
lastctick = now;
}