[SOLVED] Custom navmesh shape?

Unity Engine
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1

Im trying to bake a navmesh on my terrain but I do not want it to bake the whole terrain with walkable, only the white part as you can see in the bottom image:

I have tried making a tubeform mesh and placed it in the terrain and made that to a non walkable area but it still bakes the whole terrain to walkable.

The terrain is a total of 20 000 x 20 000 so baking takes some hours, so to see the wrong result after several hours of waitning is frustrating to say the least :slight_smile:

I have been baking this 4 times now and I think its about 3,5 hours every bake :frowning:

Do anyone know how I can fix this?

I do not have any money so paid third party addons is a no go sadly.

I need a AI to follow the player around and stop within a distance from the player. The IA must be able to go around obstacles.

Any help would be very appreciated

2

help? :slight_smile:

3

Tried disabling Navigation Static from terrain?
Or disable terrain while baking…

3185456--243081--upload_2017-8-16_18-23-54.png

4

If I disable Navigation Static from terrain, wont that mean that the navmesh wont work on the terrain?

5

oh yeah, it wouldnt probably work properly if terrain is not flat on that area…
(was thinking you just use the flat mesh as navmesh area)

maybe could export terrain as obj,
cut out unwanted parts from the mesh (with blender or others), then use that mesh for baking…

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6

Yes, I will try that again.
I tried it yesterday but the file was over 2 GB in size so it would not load into blender. Ill try to export it at a lower resolution.

7

So. it did not turn out as I hoped. lower res = not correct heights so some areas where under the terrain. So still no fix… I have no idea on how to even start with the coding to make it without a navmesh… :frowning:

8

you could still move them around with raycasts, waypoints…

or test some free navigation plugins, like
https://arongranberg.com/astar/features

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9

I think I have fixed the navmesh now. changed it some in Blender and it looks like it follows the terrain pretty well now.I just need to test it :slight_smile:

10

So I needed to export my terrain in half res using “http://wiki.unity3d.com/index.php?title=TerrainObjExporter”

I then import it into Blender. I cut away the parts that I did not want and then exported to “.obj”.

I imported it into Unity.

Placed the mesh at 0,0,0 and then tried to put it as close to the Terrain as I could “just enough to see it commin up of the terrain”

I then made the Terrain “not static” and made the mesh static and walkable.

Baked and then after it had baked I just took away the mesh.

I now have the navmesh that I wanted and it seem to work :slight_smile:

11

btw. check out 2017 with area/volume baking from 17min →

2 Likes
NavMesh ideas...
12

I’ll definitely do that tonight. Thanks :slight_smile: