Monster resistances

[Flaming Corpse]

Hi, I'm trying to expand the monster pages on the wiki with more info, and I'm trying to work up a list of which monster classes have innate resistance or vulnerability to different effects. I'm talking about stuff that doesn't show up in the monster definitions in mon-data.h. For instance, no undead monsters are listed as having "MR_RES_POISON", but they're all poison resistant regardless.

Here's what I've got so far: correct me if I'm wrong, add what you can.

All non-natural monsters (plants, undead, demonic, nonliving, holy) :
negative energy+++

Undead:
pain/torment
poison
suffocation
rotting+++ (zombies only have rotting+)
holy--

Nonliving (golems, etc.):
pain/torment
confusion
suffocation
curare

Plants:
pain/torment
suffocation
confusion

Demons:
negative energy
pain/torment
rotting+++
vulnerable: holy--

Jellies/slimes:
curare
most, but not all, acid (for instance, the amoeba)

Holy monsters:
rotting+
holy

Insubstantial monsters:
rotting

(non-demon or undead) evil monsters:
vulnerable: holy-

Profane Servitor:
holy

Serpent of Hell:
hellfire (in Gehenna)
cold+++ (in Cocytus)

[Stormphoenix]

Yeah, looking at the code, undead have no poison resist, it just checks when poisoning if the target is alive:

beam.cc line 2035:

  Code:

bool poison_monster(monster* mons, const actor *who, int levels,
                    bool force, bool verbose)
{
    if (!mons->alive())
        return (false);

<snip>


I imagine other "resistances" not mentioned in the data file are hardcoded like this, so might be tricky to easily find.