Not getting GraphUpdateObject to work right

Beginner Questions
#1

I have a scene that has an island in the middle with water all around it. I want to make the water tagged as unwalkable so AIs avoid it. I also want to be able to assign weights to water traversal (and swimming) later. In a simpler scene I was at one time working, but I have missed something in the more complex scene (with actual terrain).

I am using a recast graph to create the navmesh. Here are the settings:

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I have tried using a GraphUpdateScene object and given it the bounds of the whole scene with the y value locked to sea level. It looks like this:

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When I do the graph scan, everything seems in order. Normal pathing works great.

Here are my A* settings:

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And my AI settings:

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I have tried scripting it, but with no success. The following halts all AIs:

                GraphUpdateObject guo = new GraphUpdateObject(water.GetComponentInChildren().bounds);
                guo.setTag = 1;
                guo.modifyTag = true;
                guo.setWalkability = false;
                AstarPath.active.UpdateGraphs(guo);

I found a post about extending the GUO object, but It just processed a lot and never gave any indication it completed or worked.

using UnityEngine;
using Pathfinding;

namespace Assets._Code.AI
{
    public class WaterGUO : GraphUpdateObject
    {
        public float ylimit = 0;
        public override void Apply(GraphNode node)
        {
            if (((Vector3)node.position).y <= ylimit)
            {
                node.Tag = 1; //Set to use tag 1 (default tag is tag 0)
            }
        }
    }
}

Used that class with:

            WaterGUO guo = new WaterGUO();
            guo.bounds = water[0].GetComponentInChildren().bounds;
            guo.ylimit = 50;
            AstarPath.active.UpdateGraphs(guo);

I feel like I am going in circles. If the AIs move, they still go right into the water.

Any ideas are appreciated as it gets me thinking of other possibilities.

#2

I added some debug to my script (with the first snippet of code). I got all of the nodes and printed out their tag and walkability. For all nodes it is tag 0 and walkability True. I added AstarPath.active.FlushGraphUpdates() which take several minutes to run, but doesn’t change the node output. After the flush, there are no queued updates, and there is an update queued when I add the GUO to AstarPath.active.UpdateGraphs(guo).

Help, please. I am getting frustrated because I can’t see what I am doing wrong.

#3

Hi

You’ve got ‘Update Physics’ enabled on the GraphUpdateScene component. This will make it recalculate all tiles which it touches instead of just changing the existing nodes (see http://arongranberg.com/astar/docs/graph-updates.php). You probably want to disable that.

#4

That seems to be working.

Thank you very much!!!

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