Did the new 41.00 update make any changes to nav mesh and NPC navigatable functions in the API?
After the most recent update none of my custom NPC guards can reach the desired navigation points I have set them to navigate towards, this did not happen before the update. All my waypoints are now unreachable.
I have turned on the nav mesh in debug mode and the patrolling area of the NPC is still all green like before and should be navigatable still.
Please select what you are reporting on:
Unreal Editor for Fortnite
What Type of Bug are you experiencing?
AI
Steps to Reproduce
Set custom npc to navigate towards a target (creative prop in my case) and make them navigate towards it with NavigateTo, but the npc wonāt move becuase target is unreachable.
I have been working on resolving the issue for several hours now but no success, here are some more details on the problem:
After the 41.00 update, custom NPC behaviors using the npc_actions_component no longer work. Specifically, NavigateTo always returns Invalid, meaning the nav system cannot locate the NPC on the nav mesh at all. The exact same map and code worked perfectly before 41.00.
After extensive debugging I confirmed that the action queue itself is functional and no built-in AI is interfering. The issue seems to be that 41.00 changed how the nav mesh is generated for UEFN projects, reducing coverage for surfaces that were previously included automatically, but Iām not sure. NPCs that used to spawn on valid nav mesh positions are now spawning off the nav mesh entirely, which causes every navigation call to fail immediately
Iām not sure what it is either, I think youāre probably correct, but I too have found navigation failing much more often now. Something in path finding or nav mesh has changed. Iām guessing it has something to do with them implementing scene graph more.
hope they fix it as soon as possible, it is currently ruining my main gameplay mechanic of my entire game and makes it unplayable.
I found this setting (se image) in world settings and wondering if it has something to do with it? I have tried with it on and off, nothing solves the issue.
I have spent the past 8 hours trying to solve the issue thinking I could solve it on my own but I think itās a fault on epics side on the new update. Hopefully they see this and fix it soon!
One of my custom NPCs āsort ofā works and is able to navigate towards ONE of its targets, but chooses a weird path towards it that it didnāt use before update. The remaining NPCs do not navigate at all what so ever. In debug mode with nav view turned on, everything is green, indicating it should be ok, but it is not.
Exactly the same issue here. Some NPCs work, but they occasionally choose very strange paths, while others get completely stuck. It seems almost random. During testing, you can also observe lag spikes after a few minutes, which appear to be caused by NPCs constantly trying to reach the player but failing for some reason.
