Nav Mesh problems/disappearing
On my project we are having some issues with navigation meshes. For example actors cannot navigate unless you regenerate the navigation mesh before playing in the editor, even though the navigation mesh looks fine in the editor.
I am under the impression that a lot of these problems are caused because we do not automatically generate the navigation meshes for our project. This did let me find some interesting problems. In some cases when saving a level the navigation mesh gets lost entirely. Here is the test case:
Under Editor Preferences → Level Editor → Disable Update Navigation Automatically
Running our project the debugger tells me that the AI fails to navigate because FPImplRecastNavMesh::ProjectPointToNavMesh fails on DetourNavMesh == NULL. Yet this doesn't explain why the nav mesh goes missing if you save the level without regenerating the nav mesh. So I really don't want to fix this problem as the problem seems to be elsewhere. It looks like not everything is being loaded properly in some cases.
Anyone have any ideas on what I can do to fix this?
asked Aug 13 '14 at 02:57 PM in Bug Reports
Thank you for your report. I was able to reproduce this exactly as you have described and have entered a report to our Navigation/AI team. Please let us know if you encounter any other unexpected behavior.
answered Aug 13 '14 at 10:12 PM
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