How to check the destination can be reached?

#1

@aron_granberg
AstarPath.active.GetNearest(point1, NNConstraint.Default).node;

this function always returns a node, is there a function that the point is not on the navmesh, it will return null.

#2

Hi

This depends on what graph type you are using and what you mean by “on the navmesh”.
If you are using a grid graph, the easiest is to do

bool isOnNavmesh = AstarPath.active.GetNearest(point, NNConstraint.None).node.Walkable;

Which gets the closest node and checks if it is walkable.

If you are using a recast/navmesh graph you can use the PointOnNavmesh method.

var node = AstarPath.active.data.recastGraph.PointOnNavmesh(point, NNConstraint.Default);
if (node != null) Debug.Log("On the navmesh when seen from above");