Hello, I'm attempting to make an actor with a jetpack that is possible to shoot off, and have explode. The problem I face as of yet is that my actor, when the jetpack is removed, is completely unable to even simply jump, and as such can't really get around any more. I was wondering if it would be possible to have a "jump" (jetpack) replace the normal one when the normal one is destroyed.

YOu'd have to do some sort of magic involving Lua to get them to jump after that sort of ordeal.

That shouldn't be so hard, I just need to attach a script to the jetpack to find and then set the sharpness of the Actor wearing it, 1 sharpness for jetpack attached, 2 for not attached, and then attach a script to the actor to switch between the two... I just can't figure out specifics. Is it even possible to set jetpacks with Lua?

Have a script on the actor that checks the actor's attached parts. If the jetpack is not found, make the actor do a jump via velocity change in the script whenever the jump key is pressed.

That would work, and on a completely unrelated note, is it also possible to check for the sharpness of an object, say the head, of an actor?

Yes, it is. Just have the pointer to the actor and then the Sharpness variable.

thisIsAHead.Sharpness