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RecastNavMesh changes Agent Height back to 144

I have set in the project navigation mesh setting that Agent Height is "2" which is the desired size. The RecastNavmesh-Default changes the setting back to 144 from time to time. It is very frustrating since navigation of small characters depends on it and the path is not navigable due to change of the Agent Height. Please fix this.

Product Version: UE 4.18
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asked Jan 09 '18 at 12:07 PM in Bug Reports

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avatar image Trey Z ♦♦ STAFF Jan 10 '18 at 01:02 PM


I was able to get the Agent Height to remain at 2 after I changed it and it stayed that way. How often are you noticing that it switches back to 144?

avatar image DExUS5 Jan 10 '18 at 02:03 PM

It is hard to say, at least 3 times per week, I had not linked any event to the change since it gets noticed after several hours when things dont work as intended. I will try to link the change from 2 to 144 to some event/change that was performed.

avatar image DExUS5 Jan 10 '18 at 02:48 PM

ok, just tested several things and found probably the triggering event for the change. Here is how to reproduce it:

1) create new project 2) add landscape 3) add new object collision channel (object type) any name 4) set object type of the landscape to the new one (change to custom collision) 5) add nav mesh bounds volume 6) set agent height to (any than 144) 7) save project 8) close project

9) open project 10) change the object type of the landscape

RESULT: the agent height will change back to 144

Funny thing is that sometimes it resets by it self when you open the project.

avatar image Trey Z ♦♦ STAFF Jan 12 '18 at 06:53 PM

Just to make sure are you in engine versio 4.18.2? I tried the new repro steps and the Agent Height stayed at 2 after loading back up the project and changing the object type of the landscape.

avatar image DExUS5 Jan 15 '18 at 07:40 AM

I am in 4.18.2 ... , I can share screen if needed.

avatar image Trey Z ♦♦ STAFF Jan 15 '18 at 01:32 PM

Can't do a screen share but if you can get me a gif or a video that could help out.

avatar image DExUS5 Jan 15 '18 at 01:47 PM

No problem, here is a video showing the exact issue : https://youtu.be/YqR0Q-yHoR8

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Thanks for the video that definitely helped me repro your issue. I have logged a JIRA ticket with the developers for them to address this. You can access UE-54086 at anytime to check the status of the bug.

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answered Jan 16 '18 at 05:02 PM

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Trey Z ♦♦ STAFF
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