Hi!
from the find path to loaction query… im not exactly sure what cost is supposed to be. the len seems to be pretty much exactly the lenght of the vector
idk tho how those 2 behave
You’ve probably figured this out but others might find this useful.
From what I understood “cost” of NavMesh is (1.000;0.000) by default [no idea why there are two numbers]. You can change cost of different areas of NavMesh by adding “Nav Modifier Volume” and choosing an “Area Class” [you can create a NavArea with custom cost].
Length is actual distance between two points on NavMesh.
Here is UE4 Documentation explaining what cost is useful for.
Here is Unity manual explaining what it is. Not sure if everything is applicable to UE4 but it explains things nicely.
Cost is not only decided by cost of the area, it takes length of path into consideration as well.
Please anyone feel free to correct me about any of these. These are just what I understood after a few minutes of searching on the net.