How do I prevent AI bots from leaving the layout?

How do I prevent AI bots from leaving the layout?

What are AI bots and why are they leaving the layout?

AI = Artificial intelligence^^ So its some sort of an enemy but it just moves around and doesnt hurt you (to be exact little white cute bugs that fly around) :]

I know what AI is, thanks..

Any answer on why they are leaving the layout?

Other information that could be usefull:

What kind of behaviour do they have?

What kind of events are attached?

How big is the layout?

Why shouldn't they leave?

Would creating a new one outside the viewport be enough if they leave the layout?

If not, why not?

Etcetera..

I mean, you could have them not leaving the layout if you prevent them from moving, but I guess that's not the answer you are looking for..

Behaviors: Bullet, Solid, Pathfinding, Sine.

Events: On start of layout|Set Bullet angle of motion to random(360) degress - I wanted to give them a pathfinding movement but this was just fine.

Layout size: 1708, 14000

Reason to not leave the layout: I want them to fly around forever and not to all exit the layer because it get's so empty and sad than :[ I guess creating a new one outside the viewport could work fine.. I hope that doesn't affect performance bcuz there are many of them flying around..