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AI doesn't move in packaged game

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Hello guys. I've recently upgraded my project to 4.8 from 4.7 and now my ai character just doesn't want to move in the packaged game. There is no problem when playing in the editor. I tried to visualize the navmesh in the packaged game by executing the blueprint node "Execute Console Command" with command "show navigation" but doesn't show anything (btw I don't know if this is available in a game packaged with shipping configuration).

Thanks,

Gabor

Product Version: UE 4.8
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asked Aug 06 '15 at 09:33 PM in Packaging & Deployment

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Gabor D.
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avatar image Samantha Sutton ♦♦ STAFF Aug 07 '15 at 03:28 PM

Hey EasternWize,

Thank you for bringing this to our attention. Are you using custom AI or are you using AI from one of the templates or learning projects we have available? Are you able to replicate this AI issue with a regular Unreal Engine 4 template? Have you tried copying your project to a 4.9 Preview 2 version to see if the same issue persists?

Looking forward to hearing back from you, thanks!

avatar image Gabor D. Aug 07 '15 at 08:08 PM

Hi Samantha,

Thanks for the quick response! I'm using custom AI. Tried it with 4.9 preview 2 with same results. Works in editor, doesn't work in packaged game. I also tried packaging the example project posted here: Behaviour trees support stream and it seems that it's fine. I think I'm gonna check my behaviour tree.

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So, in the project settings under Navigation Mesh I checked Forced Rebuild on Load and changed Runtime Generation to Dynamic (same as in my RecastNavMesh-Default) and tadaaaa... now my AI started to move in the packaged project.

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answered Aug 07 '15 at 09:13 PM

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Gabor D.
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avatar image Samantha Sutton ♦♦ STAFF Aug 11 '15 at 06:08 PM

Glad to see that your AI is finally working. If you happen to have any further questions, let us know!

Have a great day!

avatar image TonyCrusher Dec 18 '18 at 06:09 PM

I did the sam ething but did'nt worked for me and I'm using UE4 4.21

avatar image dark marvado Oct 24 '18 at 03:51 AM

I might have a similar issue, AI moves fine on editor, but when I launch the game the issue comes, sometimes in the first level, but sometimes the first level works, then the AI will be freezed on the second level, if I change the project settings, Runtime Generation to Dynamic and check forced rebuild on load, the AI moves, but spinning like crazy, with difficult to continue towards the player as it does fine in the editor. I need help!

avatar image DaGaffer Nov 24 '18 at 07:36 PM

There is apparently a bug with Navmeshes in packaged builds in 4.21.0 that may be what you are seeing.

There are gaps on the edges of every tile that the AIs cannot path over. One hopes this will get fixed rapidly - unfortunately there is apparently no way to see the bugs that have been submitted on this right now, but you can see the problem discussed here:

https://answers.unrealengine.com/questions/847685/view.html

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