ZDoom

[quote="Spleen"]You could call an ACS script from the projectile, which calls [wiki]SetActivatorToTarget[/wiki], then returns [wiki]ActivatorTID[/wiki], returning the TID of the actor the projectile hit.[/quote]
A projectile's Target field is the shooter. Tracer is used for the actual aimed-for thing, but I'm not sure if that's used outside of SeekerMissiles.

You could call an ACS script from the projectile, which calls [wiki]SetActivatorToTarget[/wiki], then returns [wiki]ActivatorTID[/wiki], returning the TID of the actor the projectile hit. I don't know if you have a system that assigns TIDs to everything as part of your mutator, but you could use A_JumpIf to have different behavior depending on whether a particular actor actually has a nonzero TID.

I made a flamethrower weapon with 'fire' using A_Fire, and it's even worse in multiplayer, because somehow the fire warps to the target when he respawns. I'd really like a feature like this.

This is currently the only problem that's stopping me from releasing my mutator. Any more help with this would be very appreciated. :(

After some experimentation, none of those parameters seem to help. :(

[wiki]A_JumpIfTargetInLOS[/wiki]

extra parameter yo

Adding A_JumpIfTargetInLOS("RealDeath") [i]always[/i] kills the projectile before it has the chance to do any lasting damage to the monster. :(

Maybe try use A_JumpIfTargetInLOS? Just a thought..

A_Fire is great for pulling off certain effects, but these [i]can[/i] be ruined when the target dies inexplicably.

One particular effect I'm shooting for is a projectile that latches onto its target, fixing it in place and doing radius damage to it until the projectile explodes (after a set number of tics). If the target dies before the projectile does, the projectile remains there, which produces an undesirable visual oddity - it's still fixed in place, latched onto the target which it just killed!

Unless there's a way to fix this that I've overlooked, I think a flag called CHECKTARGETDEAD (or something), which kills the projectile when its target dies, would be a fairly useful addition.