This is a question for the devs, though if any players have figured it out, I'd like to hear it.

What does the game use to decide whether to fire at a target using AutoFire or not? It doesn't seem to work on players and some NPCs (war convoy bots, for example.) even if they're showing red on your radar.

I'd like to know the answer too. It only seems to work on hive bots, never had it work on even a tri-kos player. I kind of consider this a bug, because even Inc said in one of his interviews that on mobile, the player should only need two thumbs.

it doesn't work til you're hit in my experience.

So you have to set yourself up to die before it'll even start shooting

Anybody else?

Autofire works on Android, iOS, and WinRT only.
It is enabled/disabled with the 'autofire' cvar and with the /toggleautofire command (which toggles the cvar). It only works when autoaim is also enabled.

It decides when to auto-fire if the last weapon in your primary weapon group is calculated to be able to hit the target, you are outside the No-Fire Zone, and your target is an enemy (GetFriendlyStatus(target)==0).

So rockets/missiles/mines won't auto-fire very well, as wouldn't charge weapons.

Thanks Ray!