Nav mesh suddenly stops generating

Development Programming & Scripting AI
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1

Hello,

I’m working on a tower defense game project, and to help the enemys navigate the environment I have created modular walkable path actors using blueprints, these are just simple static meshes with box collisions at the sides set to block.

Once these modular paths are placed I then placed a nav mesh on top of them, these nav meshes were generating just fine but suddenly when i kept placing a few more of these actors aswell as nav meshes, the nav meshes suddenly stop generating.

So what I have is a path from start to end of the level but the nav mesh has stopped generating about half way through for no apparent reason. Please let me know if there is a better approach to this or if theres something i can do to fix this. Thanks!

2

Have you resolved this problem yet?

I fixed my jammed regeneration by saving all and closing the editor to reopen it again.

I can’t reproduce this apparent bug yet to test this. This jammed regeneration occurred to me at two occasions. One was when I imported a new model. And the other was when I changed the collision presets to “Character” and then back to another option (I can’t remember which).

3

Hey man I think I may have found a solution.

I seem to be in the exact boat as you on this one, but what I did was

  1. delete all nav mesh
  2. save project
  3. go and copy all the project files from where ever they are saved on your PC
  4. make a new project
  5. paste the project files from your last project into your new project
  6. apply nav mesh again (and dont forget to press P!)

I hope it works for you like it did for me!

4

It’s more simple to delete the save folder of your project