Function NavGraph.GetNodes

void GetNodes<T> (

GraphNode.NodeActionWithData<T>	action
ref T	data

)

Calls a delegate with every node in the graph.

This is the primary way of iterating through all nodes in a graph.

In contrast to the other overload, this one allows you to pass in a custom reference type, which will be passed to your callback. This is useful to avoid allocating a new delegate for every call, thus reducing garbage collection pressure.

Do not change the graph structure inside the callback.

var graph = AstarPath.active.data.gridGraph;
int numWalkable = 0;

// Passes the number of walkable nodes as a reference parameter
// to avoid GC allocations due creating a closure.
graph.GetNodes((GraphNode node, ref int numWalkable) => {
if (node.Walkable) {
numWalkable++;
}
}, ref numWalkable);


void GetNodes (

System.Action<GraphNode>

action

)

Calls a delegate with every node in the graph.

This is the primary way of iterating through all nodes in a graph.

Do not change the graph structure inside the callback.

var gg = AstarPath.active.data.gridGraph;

gg.GetNodes(node => {
// Here is a node
Debug.Log("I found a node at position " + (Vector3)node.position);
});
If you want to store all nodes in a list you can do this

var gg = AstarPath.active.data.gridGraph;

List<GraphNode> nodes = new List<GraphNode>();

gg.GetNodes((System.Action<GraphNode>)nodes.Add);


void GetNodes (

System.Func<GraphNode, bool>

action

)

Calls a delegate with all nodes in the graph until the delegate returns false.