Is it possible to dynamically create a new PointGraph and assign the Root Transform?

Beginner Questions
1

Hi,

Is it possible to dynamically create a new PointGraph and assign the Root Transform?

At the moment I am starting with the basics, so I have already added a PointGraph manually, and trying to tell it which transform to use as the Root Transform. So far I have had no luck. Here is the code I have written so far:

`import Pathfinding;

var aStar : AstarPath;
var waypointsParent : Transform;

function Start()
{
waypointsParent = GameObject.Find(“WayPoints”).transform;
aStar = GameObject.Find("_A*").GetComponent(AstarPath);
aStar.pointGraph.AddRoot(waypointsParent);
}`

I get the error:
NullReferenceException: Object reference not set to an instance of an object

I can see in the inspector that both the aStar component and the waypointsParent have been found.

Where am I going wrong?

Thanks

2

Never mind, after further digging around and looking at as many unityscript based questions I could find, I managed to work it out. For those who are still learning all aspects of Unity and A* this might help:

`import Pathfinding;

var aStar : AstarPath;
var waypointsParent : Transform;
var pointGraph = new PointGraph();

function Start()
{
waypointsParent = GameObject.Find(“WayPoints”).transform;
aStar = GameObject.Find("_A*").GetComponent(AstarPath);
aStar.astarData.AddGraph(pointGraph);
pointGraph.root = waypointsParent;
}

function Update()
{
pointGraph.Scan();
}`

Of course I do not recommend having the pointGraph.Scan running all the time in the Update function and it would be best to call when needed ect. I just put it there to show it working.

Good luck!

3

Great you managed to figure it out. And yes, it is much more performant to just call Scan right after you have constructed the graph in Start().