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Arma 3 >  Workshop > Ryan's Workshop > Zombies and Demons > Discussions
Zombies and Demons
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Thoreaufare 24 Oct, 2018 @ 5:39pm
Zombies eventually stop moving
Forgive me if this has been posted before, but I couldn't find anyone else describing this issue recently.

I continually run into an issue where zombies will eventually stop moving. More specifically, zombies that have acquired a target or have been given a waypoint will inevitably stop dead in their tracks, though they continue to face targets. It usually takes a few minutes before this behaviour emerges. Get close enough, and they may continue chasing and attacking but if you move about 20m away they stand in place.

Removing their waypoints, adding new ones, editing the type of waypoint does nothing. Very rarely the zombie will decide to start moving again to a target. More often than not, the zombie will stand in place until it is killed.

Anyone else run into this issue? I've tested this running only this mod on Stratis using pre-placed units through the editor and placing zombies on the fly with Zeus. Before you ask, I'm using OPFOR zombies and BLUFOR humans to test.

Any ideas or remedies?

EDIT:
I have found a personal solution.

From my testing, you can help mitigate this bug by doing this fix. Here's a rough but concrete example assuming you have a zombie group named zAmbientGroup:

[] spawn { while {true} do { _lastZombiePos = getPos (leader zAmbientGroup); sleep 10; if ((_lastZombiePos distance2D (getPos (leader zAmbientGroup))) < 1) then { doStop (leader zAmbientGroup); }; } }

This will continually check every 10 seconds if the zombie group leader has moved less than 1 meter since the last check. If it hasn't moved and is seemingly stuck, we give the group leader a doStop command. Then, when the mod calls its engageTarget function again it will automatically issue another doMove command.

See my comment for more info. https://steamhost.cn/steamcommunity_com/workshop/filedetails/discussion/501966277/1734342793781632134/?ctp=2#c1640919103677959944
Last edited by Thoreaufare; 15 Dec, 2019 @ 8:08am
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Showing 16-22 of 22 comments
Thoreaufare 9 Aug, 2019 @ 2:51pm 
Originally posted by SirVicio:
I have not played for some time, but i think i can remember how to fix that. Just spawn Z´s one by one, not in a unit. That solved the issue for me some time ago.

I have recently revisited this issue and I believe this does help. I've noticed that when zombies group together, all will stop (eventually) when the group leader stops.

I believe the root of this issue stems from the use of the doMove command in the mod's engageTarget function. This same issue of units not moving has been discussed in this thread on the Bohemia Forums: https://forums.bohemia.net/forums/topic/169852-issues-with-domove-commands/

If this bug is still present, it may be what's causing the zombies to stop moving. Now I'm not entirely sure why this bug would make zombies in their own group more reliable than multiple zombies in one big group. It may have to do with how doMove command on a squad leader tells the group to form up.

From my testing, you can help mitigate this bug by doing the fix described in that forum post. Here's a rough but concrete example assuming you have a zombie group named zAmbientGroup:

[] spawn { while {true} do { _lastZombiePos = getPos (leader zAmbientGroup); sleep 10; if ((_lastZombiePos distance2D (getPos (leader zAmbientGroup))) < 1) then { doStop (leader zAmbientGroup); }; } }

This will continually check every 10 seconds if the zombie group leader has moved less than 1 meter since the last check. If it hasn't moved and is seemingly stuck, we give the group leader a doStop command. Then, when the mod calls the engageTarget function again it will automatically issue another doMove command.
#16
baby kicker 15 Dec, 2019 @ 5:14am 
If this post is still relevant, I believe I have discovered the problem.

In short, the problem is that you have too many zombies placed down in a map, I found that with 6 large mobs of zombies the problem became more and more apparent, however with 1-2 there were literally no problems whatsoever.

You are still able to place modules down for roaming, feeding, etc however there is a limit to how many entities the game engine can run which means higher entity counts will make you game run like a cheese grater that has broken both of it's legs and is currently in a coma and will also break the zombies AI, thus the stopping.

And to be fair, a single large group of zombies has the same amount of units as 4 rifle/ assault squads which explains why the game gets so bogged down.

If you just stick to what your server/ pc can handle you should be OK

P.S. Spawners are really good at mitigating this problem as you can still get large amounts of zombies but since they are all spawned in at different times it runs better.

P.S.S. When zombies die it allows other units to become active.
Last edited by baby kicker; 15 Dec, 2019 @ 5:18am
#17
jacknorrisuk 15 Feb, 2020 @ 12:18pm 
I didn't have this problem for a while, and everything was running like clockwork - even with roaming, jumping, hordes, on large maps, loads of obstacles, vehicles, even AI mods, the lot...and then, out of nowhere, they all start standing still again!

Sadly I have missions which were working brilliantly now unplayable, with all fast zombies taken out before they get anywhere near a human!

I have tried just about everything suggested here to remedy it, with no success. I also tried removing additional mods one by one, creating new scenarios from scratch, and still with no success. It makes no sense, almost like the mod itself gets corrupted.

Perhaps it's relevant - I have noticed other behaviour changes that go alongside the standing still bug:
- They seem to struggle with targeting - even when they know where you are and are very close, you will see them slowly spinning round on the spot, looking in all directions - they didn't do this before the bug starts
- Even when directly attacking a single human, they tend to run straight past the victim before/after an attack, getting as far as 15-ish metres before they awkwardly turn around and come in for another 'fly by' attack...?
- With a handful of standing-still zombies trying to edge closer to you and your squad, I notice a significant performance drop, with chunky frame freezes every few seconds

Can anyone else verify that their issue has the same symptoms as this?
Next up I guess I will try reinstalling some files...



#18
Olly Otter 21 Jan, 2022 @ 7:11pm 
Not sure where to go for this but here will do. My problem is that resurrected zombies wont charge at other people (Civilians, Blufor, Independent) unless said side walks up to the zombie to which the zombie will attack then just stand there. Anyone know how to fix this?
I have set the zombies to careless, set waypoints, setup the zombie setting module and they still just stand there.
Last edited by Olly Otter; 21 Jan, 2022 @ 7:12pm
#19
Volsung 14 Sep, 2022 @ 2:31pm 
forgive me if im saying something obvious, have you all tried setting zombie target range to 5000m or 10000m? have you all set zombies to Roaming, with Feeding turned OFF? have you all set zombie spawn zone to 500m or 1000m or greater?
have you all set the zombie horde spawn distance to 250m or greater?
have you all set zombies as independent went into general settings and turned independent hostile to blufor and opfor?

im only asking because thats what i do and i haven't experienced any issues with this mod at all. sorry if i stated obvious things there. hope that helps someone.
#20
LeonidasSparta 21 Sep, 2022 @ 12:04am 
Yes same with Me I already try all modules is not working, the zombie just stand still in some areas and they don't move. if I approach to them, they start walking to me
#21
LeonidasSparta 21 Sep, 2022 @ 12:05am 
I didn't have this problem for a while, and everything was running like clockwork - even with roaming, jumping, hordes, on large maps, loads of obstacles, vehicles, even AI mods, the lot...and then, out of nowhere, they all start standing still again!

Sadly I have missions which were working brilliantly now unplayable, with all fast zombies taken out before they get anywhere near a human!

I have tried just about everything suggested here to remedy it, with no success. I also tried removing additional mods one by one, creating new scenarios from scratch, and still with no success. It makes no sense, almost like the mod itself gets corrupted.

Perhaps it's relevant - I have noticed other behaviour changes that go alongside the standing still bug:
- They seem to struggle with targeting - even when they know where you are and are very close, you will see them slowly spinning round on the spot, looking in all directions - they didn't do this before the bug starts
- Even when directly attacking a single human, they tend to run straight past the victim before/after an attack, getting as far as 15-ish metres before they awkwardly turn around and come in for another 'fly by' attack...?
- With a handful of standing-still zombies trying to edge closer to you and your squad, I notice a significant performance drop, with chunky frame freezes every few seconds

Can anyone else verify that their issue has the same symptoms as this?
Next up I guess I will try reinstalling some files..
yeah me too
#22
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