Baking NavMesh at runtine

Hello,
My map is procedurally generated, and I want to use the navigation system. I'm trying to bake the NavMesh at runtime. But my code isn't working.

Code (CSharp):

1. private int planeScale = 5;
2.     private List<NavMeshBuildSource> sources;
3.  
4.     public GameObject prefab;
5.  
6.     void Start () {
7.         Vector3 scale = transform.localScale * planeScale;
8.         sources = new List<NavMeshBuildSource> ();
9.  
10.         for (int i = 0; i < (int) scale.x; i++) {
11.             for (int j = 0; j < (int) scale.z; j++) {
12.                 if (Random.value > seuil) {
13.                     Vector3 pos = new Vector3 (2f * i - scale.x, 1.0f, 2f * j - scale.z);
14.                     Instantiate (prefab, pos, Quaternion.identity);
15.                     NavMeshBuildSource src = new NavMeshBuildSource ();
16.                     src.transform = transform.localToWorldMatrix;
17.                     src.shape = NavMeshBuildSourceShape.Box;
18.                     src.size = prefab.transform.localScale;
19.                     sources.Add (src);
20.                 }
21.             }
22.         }
23.         NavMeshBuildSettings settings = new NavMeshBuildSettings ();
24.         string[] res = settings.ValidationReport (GetComponent<MeshCollider>().bounds);
25.         Debug.Log (res); // Return an empty String array
26.  
27.         NavMeshData data = NavMeshBuilder.BuildNavMeshData(settings, sources, new Bounds(), Vector3.zero, Quaternion.identity);
28.         Debug.Log (data); // Isn't null
29.         NavMeshDataInstance inst = NavMesh.AddNavMeshData (data);
30.         Debug.Log (inst.valid); // Display true
31.     }

If in the editor I first bake the nav mesh manually the previous code doesn't modify the nav mesh.
But if I don't bake it first, I got this warning :
Failed to create agent because it is not close enough to the NavMesh
UnityEngine.AI.NavMesh:AddNavMeshData(NavMeshData)

I'm missing something?
Thanks for help.

EDIT: I'm using Unity 5.6.0b11

 

Have you tried calling the Bake() function on the NavMeshSurface component?

 

I can't seem to find such a function, although it is mentioned in the documentation. Has it not been implemented yet?

 

If you're using the latest version of the repository, you have to use BuildNavMesh() instead of Bake(). Again, located in the NavMeshSurface component. And just in case you didn't know. Even though they said that new NavMesh features would be included in 5.6, these features aren't actually available without downloading the files from GitHub.