What exactly does the VULNERABLE flag do/mean?

[rollingcrow]

The description says on the wiki, "An actor with this flag can be affected by area-of-effect damage." Does this mean sector damage, falling, or what?

[Shadelight]

The damage that's caused by the effects of something like A_Explode.

[Gez]

An example of use: destructible decoration like a tech lamp. You can't break it with a gun shot, but a rocket will destroy it.

Another example: pipe bombs like in Duke Nukem.

The interest is that they don't need to have the SHOOTABLE flag, so they don't "snag" your autoaim.

[NeuralStunner]

The interest is that they don't need to have the SHOOTABLE flag, so they don't "snag" your autoaim.

Does the "Never Friends" AutoAim setting imply "Monsters Only"? The latter, I'd guess, means only actors with the +ISMONSTER flag... In which case +VULNERABLE is a poor substitute, assuming you want an object that can be attacked at all.

[CaptainToenail]

Wait, this creates a similiar effect to the bugged 'ghost' monsters (crushed monsters revived by Vile) without the clipping?

[NeuralStunner]

Wait, this creates a similiar effect to the bugged 'ghost' monsters (crushed monsters revived by Vile) without the clipping?

Pretty much.

[Gez]

Not really. The ghost monster bug gives monsters a height of 0. This allows them to noclip through walls, and makes them impossible to hit for the player. They're still vulnerable to area-of-effect attacks, yes, but also to melee attacks from infighting monsters (and I think to archvile flames).

On the other hand, +VULNERABLE -SHOOTABLE means that the actor cannot be attacked by monsters at all, but it doesn't give noclipping. So it is somewhat similar, but actually very different.

Note that if you want ghost monsters in ZDoom, all you have to do in DECORATE is set their height to 0.

[Ceeb]

Note that if you want ghost monsters in ZDoom, all you have to do in DECORATE is set their height to 0.

Just don't tell you-know-who...

So anyway, using this flag, I could make an actor that, with some scripts, could be used to simulate destructable walls in DN3D and other Build games? Is that right?

[Gez]

Yeah I suppose so. If you want a dummy actor to be there to detect blast damage and trigger a script when it dies, that flag will do the job nicely.