If you fire the nailgun at large objects such as the palm tree or moveable sectors such as a lift or door you will be left with nails floating in mid-air which looks really naff. It's a shame because it's a cool idea to see nails imbedded in the wall.

Standard bullet puffs, while not as exciting would probably be the best way to prevent this happening.

I'm currently at a loss for how to do this while keeping the stuck nails, since things like trees are solid but non-shootable (meaning only the projectile's standard Death state will ever be called). I wonder if there's some sort of reliable way to check if the actor's still attached to a wall or something and fall off if it's not.

Hmm, maybe I can spawn an actor with +THRUACTORS and see if it's stuck on something...

Also, solving the problem with trees still wouldn't address the nails floating in the void after opening a door (normal or polyobject) or lowering a lift.

As nails are now disappearing after some time, this can be considered as... well, semi-fixed