How to get a random point from NavigationServer3d with respect to NavigationLayers

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1

Godot Version

4.4

Question

How to get a random point from NavigationServer3d with respect to NavigationLayers

Hello i am using C# an Godot 4.4.

In my scene i have
→ Main
→→World
→→NavigationRegion3D
→→→GridMap

My GridMap use a MeshLib with multiple tiles. There are 2 tiles called floor_a and floor_b. In the GridMap i have set the NavigationLayers for floor_a and floor_b to be 2 and removed them from 1.

I tried:
var mapRid = GetWorld3D().NavigationMap;
spawnPosNav = NavigationServer3D.MapGetRandomPoint(mapRid, 2, false);

This just gives (0, 0, 0)

  1. GetWorld3D().NavigationMapDoes this get NavMesh that is in the GridMap?
  2. How can i use NavigationServer3D.map_get_random_point to get a point that is on guaranteed to be in layer 2?
2

When are you trying to get that point? The NavigationServer3D does not update until the next physics frame. From the documentation:

Note: Most NavigationServer3D changes take effect after the next physics frame and not immediately. This includes all changes made to maps, regions or agents by navigation-related nodes in the scene tree or made through scripts.

3

I didnt know that, but i dont think thats the issue i am running into

This is called repeatedly every ~2s. in the _Ready of one of my nodes. The nav mesh does not change once the GridMap is setup.