This exact thing is something I've been wanting to do for a while. That's how Devil May Cry's Nightmare Beta behaves, and I always did want to emulate that behavior for the Nightmare in Psychic. Maybe I'll get my wish eventually.amv2k9 wrote:Let's say you want a reflective shot that homes, but only does so when bouncing off a surface. Have it call A_SeekerMissile on a bounce, then go back to Spawn.

Some other neat uses off the top of my head:
- Make a grenade that bounces multiple times and causes an explosion every bounce (e.g. Bulletstorm's charged Bouncer)
- An "Erratic," non-spherical bouncer can be made by tweaking its direction via A_SetAngle for every bounce
- Emulate Heretic's powered-up Mace shot, though that's basically what amv2k9 said
- Simply animating a projectile on bounce is one of the more useful (albeit simple) applications. Because why not?