Demon spawn fire's A_Fire (Dehacked)

[SuperGiantNinjaYeti]

Does anyone know what, if anything, does the A_Fire function do for the Icon of Sin's spawn fire effect thingy?

If I'm reading the code correctly, A_Fire is responsible for the archvile's fire tracking its target, and doesn't seem to do anything relevant to the stationary fire effect of a landing spawn cube.

 

Is that correct? I've been working on a deh patch were I ended up recreating that fire animation with actionless states and using the free code pointers for other stuff. It seems to work fine, at least the way I intend to use it, but I'm curious if there is some barely noticeable difference I'm not seeing or some niche case were it would make a bigger difference.