Search Unity

  1. Unity Asset Manager is now available in public beta. Try it out now and join the conversation here in the forums.
    Dismiss Notice

Bugs in NavMeshBuilder

Discussion in '2017.3 Beta' started by snacktime, Dec 14, 2017.

  1. snacktime

    snacktime

    Joined:
    Apr 15, 2013
    Posts:
    3,356
    So I can create a test case for this with some amount of work, but unless it's actually going to get fixed, I really don't have the time.

    Basically building/updating is broken at runtime if the nav sources have any static geometry. Which really makes the entire system worthless.

    Specific error is:

    Source mesh Combined Mesh (root: scene) does not allow read access
     
    snacktime, Dec 14, 2017
    #1

  2. snacktime

    snacktime

    Joined:
    Apr 15, 2013
    Posts:
    3,356
    FYI this when you use render geometry so not nearly as bad as I thought at first.
     
    Last edited: Dec 14, 2017
    snacktime, Dec 14, 2017
    #2

  3. adriant

    adriant

    Unity Technologies

    Joined:
    Nov 1, 2016
    Posts:
    69
    This error pops up because one or more meshes are not read/write enabled so they cannot be taken into consideration when the NavMesh is built. It would be misleading to see that they have no effect in the NavMesh although they are there, in the scene. I see two solutions: either 1. enable read/write on those meshes when they are imported, or 2. ignore those meshes explicitly from the baking process.
     
    adriant, Dec 15, 2017
    #3

  4. superpig

    superpig

    Drink more water! Unity Technologies

    Joined:
    Jan 16, 2011
    Posts:
    4,659
    I'm guessing that the problem here is that the specific mesh in question is the one created by Static Batching, which doesn't offer any controls over the read/write flag.
     
    superpig, Dec 15, 2017
    #4
    Peter77 likes this.

  5. castor76

    castor76

    Joined:
    Dec 5, 2011
    Posts:
    2,517
    Interesting. @snacktime , does it happen only on 2017.3 beta? (ie : works for 2017.2) ?
     
    castor76, Dec 15, 2017
    #5

  6. snacktime

    snacktime

    Joined:
    Apr 15, 2013
    Posts:
    3,356
    @superpig ya that is the issue pretty sure. All the meshes in the navmesh sources were actually created in code.

    Only tested this on 2017.3
     
    snacktime, Dec 15, 2017
    #6