I have a static (non-moving) camera view and a bunch of physics enabled spheres that bounce around inside the view. What I would like to have happen, is for the spheres that pass the left boundary of the screen to "wrap" around to the right boundary of the screen, and vice-versa.

Now I'm fairly confident I could do this with non-physics objects, but not sure if it's possible to do it seamlessly with physics objects. Do I need to get their velocity & direction when they pass the boundary, remove them, and create a new physics entity on the other side of the screen? Is there another more reasonable way?

Set off the objects physical behavior (phent_enable ( entity, var enableEntity );) if it reaches the border.
Then replace it (e.g. obj.x-=1000 or obj.x=[new value]).
At least switch on the objects physical behavior again.

mercuryus

I believe what mercuryus is trying to say is make the walls passable, and after the ball first enters the (now passable) boundary, make a ball spawn at the other side with the same offset as the ball entering the other side (something like newball.x = rightBound.x + (ball.x-leftBound.x) vise versa with the opposite side)

Now transfer all settings of the first ball to the other (speed, trajectory, ect.)
Once the first ball is outside of sight, delete it from the level (you could just say any ball outside a certain area beyond the boundary is to be deleted). Hope this helps

Hey, thanks to both of you for your help. Mercuryus' solution worked perfectly and kept me from having to remove and recreate the physics object. So simple, I'm a little embarrassed I didn't think of it myself :).