Errors in Running the client

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NavMesh (Navigation Mesh) doesnt show

In Editor press P to see the navigation mesh

In game use console -> show navigation

If you dont see the navigation mesh, try to edit the size slightly, and it will automatically recalculate it. There is no need to do "Calculate Navigation Paths".

I had these in my DefaultEngine.ini and were causing the problem:

 [/Script/NavigationSystem.RecastNavMesh]
 AgentMaxSlope=69.428574
 AgentMaxStepHeight=78.338669
 CellHeight=1.000000
 AgentMaxHeight=400.000000
 RuntimeGeneration=Dynamic
 bDrawPolyEdges=True

I left only this one and it started to work:

 RuntimeGeneration=Dynamic

NavMesh (Navigation Mesh) creates roof, character flies

I had a problem where the sewer level was imported as a single object and the collition mesh was very big, this was messing up the navmesh calculations, and so a "fictional" roof was created, this made my character walk on an invisible roof in game. I had to change the sewers mesh to have "Use complex collision as simple".


Couldn't find file for package

Had an issue with InteractableActors/InteractableActor when I reparented the class, and for some reason the reference was still in some files, even if the class was not referenced anymore in the editor. I was getting a Couldn't find file for package.

Solution was to search the references by enabling extensive logging to DefaultEngine.ini:

 [Core.Log]
 LogStreaming=Verbose
 LogConfig=Verbose
 LogProperty=Verbose 

After you know which bp is responsible, open it with editor, File -> "refresh all nodes". This worked also with map levels, open the level BP and refresh nodes.