leftWorldBoundaries called multiple times when entity leaves the world.

[Stef569]

Is it by design that the leftWorldBoundaries is called multiple times on leaving the world? I would expect that it is invoked once.

In World update: for (Entity e : entities) { e.updateAlarms(delta); if (e.active) e.update(container, delta); // check for wrapping or out of world entities e.checkWorldBoundaries(); }

in Entity The javadoc says 'act on leaving'. That sounds like a single event? /* * Overload if you want to act on leaving world boundaries / public void leftWorldBoundaries() { }

[thaaks]

Hi Stefan, I would say it's not by design but by code ;-) The behavior that it can be called multiple times in one update is definitely wrong (for example if x > width AND y > height it is triggered twice).

Additionally I would indeed tend to say that leftWorldBoundaries() only triggers once at all but obviously we haven't discussed this yet. Right now it would trigger as long as the entity is active but outside the world boundaries.

So if Gornova doesn't disagree I would modify the code to trigger leftWorldBoundaries() only once as long as it stays outside the world boundaries.

Question rises: do we want to trigger again if entity enters the world boundaries again or for the first time?

[Gornova]

My idea is to assure every entity in one update must exit or enter left boundaries, make sense ?

[thaaks]

What happens if an entity is added to the world but outside the boundaries? Would leftWorldBoundaries() be triggered on it's first update or not?

And Gornova, we only have leftWorldBoundaries(). Should we add enteredWorldBoundaries()? I don't think it is required...

[Gornova]

If is outside of boundaries is not "left" now, so is okay (IMHO) if leftWorldBoundaries() is not called. enteredWordlBoundaries could be an idea, but not for now (I never had to use it, you ?)

[thaaks]

No, I think enteredWorldBoundaries() is not really required at all...

[Stef569]

What happens if an entity is added to the world but outside the boundaries? Would leftWorldBoundaries() be triggered on it's first update or not?

That makes no sense. I still like to think of it as an event. The event(method call) is fired once when an entity leaves the world. Like to remove a bullet from the world when it is outside the world.

[thaaks]

Yes Stefan, that's how it will beimplemented.