AI move to doesn't work

Development Programming & Scripting
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1

I have some strange behaviour. My units are unable to go to some objects. I cannot figure out why it doesn’t work the way it should. Nav mesh is built and works around the level.
Here is the video, logs, and blueprint I’m using:


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image1467×484 109 KB

Logs:
[2024.05.22-03.10.47:717][744]PIE: Play in editor total start time 0.938 seconds.
[2024.05.22-03.10.47:724][744]LogScript: Warning: Script Msg: Attempted to access index 0 from array ‘CallFunc_GetAllActorsOfClassWithTag_OutActors’ of length 0 in ‘/Game/Blueprints/Units/RTS_MasterUnit.RTS_MasterUnit_C:ExecuteUbergraph_RTS_MasterUnit’!
[2024.05.22-03.10.47:727][744]LogScript: Warning: Script Msg: Attempted to access index 0 from array ‘CallFunc_GetAllActorsOfClassWithTag_OutActors’ of length 0 in ‘/Game/Blueprints/Units/RTS_MasterUnit.RTS_MasterUnit_C:ExecuteUbergraph_RTS_MasterUnit’!
[2024.05.22-03.10.47:737][744]LogAudio: Warning: Detected orphaned looping sound ‘Starter_Birds01’.
[2024.05.22-03.10.47:737][744]LogAudio: Warning: Detected orphaned looping sound ‘labyrinth-sky’.
[2024.05.22-03.11.56:530][829]LogBlueprintUserMessages: [PlayerUnit_C_1] Success
[2024.05.22-03.11.57:635][880]LogBlueprintUserMessages: [PlayerUnit_C_1] Aborted
[2024.05.22-03.11.59:437][962]LogBlueprintUserMessages: [PlayerUnit_C_1] Aborted
[2024.05.22-03.11.59:777][977]LogBlueprintUserMessages: [PlayerUnit_C_1] Aborted
[2024.05.22-03.12.00:251][998]LogBlueprintUserMessages: [PlayerUnit_C_1] Aborted
[2024.05.22-03.12.07:371][318]LogBlueprintUserMessages: [PlayerUnit_C_0] Success
[2024.05.22-03.12.08:565][369]LogBlueprintUserMessages: [PlayerUnit_C_0] Aborted
[2024.05.22-03.12.08:907][384]LogBlueprintUserMessages: [PlayerUnit_C_0] Aborted
[2024.05.22-03.12.09:274][400]LogBlueprintUserMessages: [PlayerUnit_C_0] Aborted
[2024.05.22-03.12.09:623][415]LogBlueprintUserMessages: [PlayerUnit_C_0] Aborted
[2024.05.22-03.12.11:374][493]LogSlate: Window 'Alpha Preview [NetMode: Standalone] (64-bit/Windows) ’ being destroyed
[2024.05.22-03.12.11:392][493]LogWorld: BeginTearingDown for /Game/Maps/UEDPIE_0_DemoMap

Can someone explain to me why it happens and how to fix it?

Thanks

2

You have a GetAllActorsOfClassWithTag node somewhere in RTS_MasterUnit blueprint that’s returning an empty array.

3

I know, but it is not related to the issue. Thanks

4

This is a bug as the same blueprint code works for all of my actors and only some of them don’t work, but it works if you click on a specific corner of the static mesh, then AI Move To executes successfully, otherwise, it fails.

But I’m sure opening a Bug request will do nothing as this is UE4.27.

Does anyone know how to resolve this or workaround for this issue? Maybe custom C++ code for AI move to with signal when the unit reaches the point?

Thanks