I did some testing on Live following these steps with a necromancer:
- Cast Dooming Darkness on the NPC from a distance.
- Waited for NPC to path to me and smack me once or twice.
- Feigned Death.
- Remained feigned until Dooming Darkness wore off.
The following NPCs Responded like this after I feigned death:
- Stood facing me for a random amount of time IF I was added to the mobs feign memory. (Zone dependant max duration. They stand there for over a minute in parts of LoY.)
- Changed heading, facing spawn point/next waypoint.
- Stood at a complete standstill until Dooming Darkness wore off.
- Walked back to spawn point/next waypoint after Dooming Darkness wore off.
Overthere
Roamers
a spiked succulent
a Kunark rhino
Skyfire
Roamers
a wyvern
a wurm
Burningwood
Roamers
A Sarnak zealot
a scoriae hornet
Fixed Spawn
A Sarnak extremist 6246.56, -3838.20, -238.39 (*This NPC was self buffed with SoW)
Chardok
Fixed Spawn
a Chokidai Whelp -38.28, 684.74, 105.62
Everfrost
Fixed Spawn
An ice giant 1840.21, -6865.84, -49.17
Permafrost
I trained myself so I'm not sure which were fixed and which roamed
a goblin evoker
An ice goblin
An elite goblin guard
The goblin sage
A goblin patriarch
A giant polar bear
Giant wooly spider
A giant dire wolf
I can test more zones but it's pretty consistant throughout every zone I visit. Exceptions being leashed mobs and raid targets. I depended on feign death to function this way to split pulls even in high level zones like Muramite Proving Grounds and Anguish when i played live full time.
I was unable to find a single NPC that Dooming Darkness stuck to that could move after I feigned until Dooming Darkness wore off or something aggro'd the NPC.
I'm going to start getting familiar with how NPC movement is handled in the current code base and see if I can come up with a way to mimic lives functionality.