/** Process all non-passive systems. */
public void process() {
check(added, addedPerformer);
check(changed, changedPerformer);
check(disable, disablePerformer);
check(enable, enablePerformer);
check(deleted, deletedPerformer);
cm.clean();
em.clean();
if (eventSystem != null) {
eventSystem.update();
}
for (int i = 0; i < systems.size; i++) {
EntitySystem system = systems.get(i);
if (!system.isPassive()) {
system.process();
}
}
}
