I'm developing first person shooter and want to integrate iAD (and maybe AdMob later). The problem is that all the ad systems that I know use simple UIView's for that and are based on tapping them. I want to use real 3d game objects as triggers, i.e. when you shot some special character an ad is invoked. The user would be notified about that (so if you don't want ads, just don't shot those objects).
I know how to do that from the technical point of view. But is it legal to do that from the ad provider point of view (and from the Apple review team POV)?
p.s. Or maybe someone knows ad system that could be integrated into my game like that.