How does an AI determine the bearing to follow within a nav mesh? I've done some reading on nav meshes, and I understand how to generate a path of polygons to reach a goal. However, what I don't understand is how you determine the bearing to follow within each polygon. Without a central node to aim for, what do you aim for? I suppose you could cast a ray to the goal and then head to the point where that ray crosses into the next cell but that would only work if that next cell is actually on your path. If your ray doesn't cross the edge into the next cell, do you instead plot a path to whichever corner of the edge is closest to the goal? I think that would get you the path shown in the 3rd diagram, but would it work in all cases? http udn.epicgames.com Three NavigationMeshReference.html