I want zombies to have a fire fx on them. This looks like what I want but the fx finishes after some seconds:

playfxOnTag( fx, self, "j_neck" );

Is there a possibility of having the fx being played until the zombie dies?
I'm using this fx:

"env/fire/fx_fire_player_torso"

-use a looping fx / edit the fx and make it looping in EffectsEd

-make the script that plays the FX loop, so that once it's done it'll start over

Only thing to add to what blunt said would be you may want to spawn a tag_origin and link it to the zombie so when the zombie dies you can delete it and shut the fx off. Otherwise you will end up with a dead zombie on the ground with the fx still playing... Similar to zombie_eye_glow function in zombiemode_spawner. You may not want the extra ent though, in which I would go with the loop and just check if the zombie is still alive before playing the fx again.

I would also add a delay so it doesn't start immediately on spawn, cause I noticed some stray fx when the zombie gets killed too quickly, if that is even a possibility in your case.

-use a looping fx / edit the fx and make it looping in EffectsEd

-make the script that plays the FX loop, so that once it's done it'll start over

The fx was supposedly lopping, or at least that was what FxEditor said.

I'm using the second option and works well (I didn't think it before lol).

Only thing to add to what blunt said would be you may want to spawn a tag_origin and link it to the zombie so when the zombie dies you can delete it and shut the fx off. Otherwise you will end up with a dead zombie on the ground with the fx still playing... Similar to zombie_eye_glow function in zombiemode_spawner. You may not want the extra ent though, in which I would go with the loop and just check if the zombie is still alive before playing the fx again.

I would also add a delay so it doesn't start immediately on spawn, cause I noticed some stray fx when the zombie gets killed too quickly, if that is even a possibility in your case.

Thanks, but there's no need. I delete zombies when they die because they used to fall off the map after dying and to avoid having to move the corpses with the cubes. And I added to the function an endon("death") so the fx won't be played again when the zombie dies.
Also I start playing the fx after the zombie has completely risen. Otherwise I would have problems detecting the position of that zombie.

Thank you guys.

The fx was supposedly lopping, or at least that was what FxEditor said.

I'm using the second option and works well (I didn't think it before lol).

It can be looping, but when there's a loop-count set in effects editor, it will loop that amount and die out after that.

But good it's working anyway