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Standalone Mode Crashes during level loading

Hi guys,

This bug is relacted with Navigation System.

First, my game open the Main Menu Level and when i click in "Start game Button" load level called "Loader"

alt text

"Loader" level have 8 sub-levels and based in last save game, loads the last

alt text

Here is the problem...

When i set Runtime generation to Static in sub-level, show this message

alt text

alt text

But, when i set Runtime generation to Dynamic, standalone game crashes during level load

alt text

=====

Unknown exception - code 00000001 (first/second chance not available)

"Assertion failed: NavigationOctree [File:D:\BuildFarm\buildmachine_+

UE4Editor_Core!FDebug::AssertFailed() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\core\private\misc\outputdevice.cpp:355] UE4Editor_Engine!FRecastTileGenerator::GatherGeometry() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\ai\navigation\recastnavmeshgenerator.cpp:1797] UE4Editor_Engine!FRecastTileGenerator::Setup() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\ai\navigation\recastnavmeshgenerator.cpp:1629] UE4Editor_Engine!FRecastNavMeshGenerator::CreateTileGenerator() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\ai\navigation\recastnavmeshgenerator.cpp:3937] UE4Editor_Engine!FRecastNavMeshGenerator::ProcessTileTasks() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\ai\navigation\recastnavmeshgenerator.cpp:3961] UE4Editor_Engine!FRecastNavMeshGenerator::TickAsyncBuild() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\ai\navigation\recastnavmeshgenerator.cpp:3355] UE4Editor_Engine!ANavigationData::TickAsyncBuild() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\ai\navigation\navigationdata.cpp:490] UE4Editor_Engine!UNavigationSystem::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\ai\navigation\navigationsystem.cpp:763] UE4Editor_Engine!UWorld::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\leveltick.cpp:1152] UE4Editor_Engine!UGameEngine::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\engine\private\gameengine.cpp:897] UE4Editor!FEngineLoop::Tick() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\launchengineloop.cpp:2359] UE4Editor!GuardedMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\launch.cpp:142] UE4Editor!GuardedMainWrapper() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\windows\launchwindows.cpp:126] UE4Editor!WinMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]

Product Version: UE 4.8
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asked Jul 31 '15 at 04:28 PM in Bug Reports

avatar image

jasielmacedo
26 2 4 5

avatar image Adam Davis STAFF Jul 31 '15 at 07:52 PM

Hi jasielmacedo,

Can you post your crash logs here so we can take a look? Additionally, does this occur in a clean, blank project with no additional content or is it limited to your project specifically?

avatar image jasielmacedo Aug 03 '15 at 05:00 PM

link text

Yes, happens in a blank project too. But one detail, this crack happens when i mark "Auto create navigation data" to true

alt text

BUT, if i set FALSE, not crash, but nobody moves and navigation system not works for anybody

This happens after server travel to any level with navigation system.

avatar image Adam Davis STAFF Aug 04 '15 at 08:31 PM

Do you have a sample project or a set of repro steps I can follow to reproduce this on my end?

avatar image jasielmacedo Aug 04 '15 at 08:46 PM

Yes,

  1. create a blank project

  2. create one blank map called "Menu"

  3. create another blank map called "Loader" or something else

  4. create another level with basic pack called "Level 1"

  5. in "Level 1" create a ground if haven't and put "Nav Mesh Bounds Volume" on ground

  6. create a simple nav agent to walk for any location in this ground put on level

  7. build all and save

  8. open "Loader" map and Add "Level 1" as sub level

  9. open level blueprint and call load stream level "Level 1" on Begin Play Event

  10. open "Menu" level and in begin play on level blueprint call openLevel("Loader")

  11. Press play of play in standalone

avatar image Adam Davis STAFF Aug 05 '15 at 05:36 PM

Hi jasielmacedo,

I'm attempting to reproduce this on my end, however I'm running into a few complications with your steps.

On 4., What do you mean when you say "basic pack"? On 6., Do you mean an AI that walks on the navmesh or do you mean a supported agent within the settings>navigation menus?

If I could get clarification on these I can continue attempting to reproduce this on my end. Thank you!

avatar image jasielmacedo Aug 05 '15 at 05:56 PM

HI Adam,

On 4. means when you click in new level, show 2 options, blank or default (Basic Pack) of you select default option create a level with, ground, sky, one directional light, and player start point, this is what i mean, sorry

I uploaded on dropbox a blank project (2MB) with all steps maded link text

avatar image Adam Davis STAFF Aug 05 '15 at 06:58 PM

Hi jasielmacedo,

I tested the project you sent and did not see any crash. Are there any additional steps I need to take to be able to reproduce this on my end?

avatar image jasielmacedo Aug 05 '15 at 07:33 PM

Hi Adam,

First of all, thanks for your attention,

If you set Runtime generation to Static in Nav Mesh Config, Build and play, you will see (if not crash (my shame)) "NAV MESH NEEDS TO BE REBUILD" and AIController not walk

But I discovered something about that problem,

Static not work, just say "NAV MESH NEEDS TO BE REBUILD"

When i set dynamic and put many AIControllers starting patrolling in Begin Play Event, Editor or Standalone crashes because Nav Mesh is building, i guest

Is this right? or Is this a strange behavior?

avatar image Adam Davis STAFF Aug 10 '15 at 07:57 PM

Hi jasielmacedo,

Can you post your dxdiag here so I can take a look?

avatar image jasielmacedo Aug 10 '15 at 08:09 PM

this is it,

link text

And diagnostics file too link text

diagnostics.txt (37.9 kB)
dxdiag.txt (30.1 kB)
avatar image Adam Davis STAFF Aug 11 '15 at 03:05 PM

Hi jasielmacedo,

I don't see anything there that could be linked to this error. Unfortunately I still haven't seen the crash on my end. Do you have any other steps I can take to reproduce this on my end?

avatar image jasielmacedo Aug 11 '15 at 03:44 PM

Sorry, but i haven't no more steps.

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Hi jasielmacedo,

I haven't been able to reproduce this with the steps provided above. I'm going to mark this as answered for tracking purposes. If you manage to find another set of repro steps or any additional information that can help lead to reproducing this error, please comment back and I'll be happy to take another look.

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answered Aug 12 '15 at 05:59 PM

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