Warning - "The Grid Graph is not scanned, cannot update area" - is this a problem?

General Grid graph
1

I have a warning that maybe someone can give some info on.

In GridGenerator.cs, UpdateArea spits out a warning on a regular basis, does anyone know what would cause this? What does scanning the grid graph actually mean in this situation?

    void IUpdatableGraph.UpdateArea (GraphUpdateObject o) {
        if (nodes == null || nodes.Length != width*depth) {
            Debug.LogWarning("The Grid Graph is not scanned, cannot update area");
            //Not scanned
            return;
        }
2

When are you seeing this? Randomly or is there a consistent? And how often is regular?

“Scanning” in this context refers to the navigation grid/data being generated. Basically, it’s saying it doesn’t see the Grid Graph as “available” to do any changes on. Are you having any issues with pathfinding or is this error just showing up and not affecting anything?

3

This can happen if you are trying to issue a graph update before the graph has been scanned. Normally, the graph is scanned when the game starts, but you can also scan it manually by calling AstarPath.active.Scan().

4

“When are you seeing this? Randomly or is there a consistent? And how often is regular?”
It’s consistent, it happens about 50 times on startup.

What does the grid graph being ‘available’ mean in this context?

“This can happen if you are trying to issue a graph update before the graph has been scanned.”
I checked and I am manually calling AstarPath.active.Scan(), and I actually have it on a frame delay to occur after the objects of the room are spawned (chairs, desks etc) so that the grid graph accounts for those items. What things would cause a graph update?

5

For example, the GraphUpdateScene component, the DynamicObstacle component, or calling AstarPath.active.UpgradeGraphs manually.

That is has been scanned. Before that, there are only the graph settings, and no navigable surface that can be updated.