3. make a transparent actor and put it at the bottom of your chest where you want the stars to collide and destroy or move then Set it to collide to star.

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I have four actors, one actor in the scene to start off, that spawns another actor in a random place when pressed, then destroys itself.

position on and offscreen instead of spawn and destroy

Not possible m8...the camera effects all layers and actors.

I'm trying to get the camera rotating whilst only affecting certain layers?

like, destroy the enemy power core in onslaught in UT2004? (Image)

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And Game Center shouldn't be absolutely first priority but memory issues GS obviously has.. if i can't spawn and destroy as much as i want cause spawned stuff remains in memory.. hmm.. that should be

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And Game Center shouldn't be absolutely first priority but memory issues GS obviously has.. if i can't spawn and destroy as much as i want cause spawned stuff remains in memory.. hmm.. that should be

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that will work for as many platforms as you want. Putting a collide behaviro in them to collide with themselves should stop them from spawning on top of each other

Just use seperate background layer to make scroll effect and i think it will turn out great.