How To Use Navigation Invokers In Unreal Engine 4 and 5 (Tutorial) How To Use Nav Mesh On Large Maps

[@alexkerasidis]

Nice. Gongrats on 40 thousand Subscribers!

[@MattAspland]

Thank you!! :)

[@alexkerasidis]

@@MattAspland No problem! :D

[@the__jive]

Nice video!

[@MattAspland]

Thanks!

[@ZimCrusher]

this is super helpful, but what if you are making an infinite runner? You can't extend the navmeshvolume forever, correct? Can you move the navemsh volume, if you character gets close to the edge?

[@MartKart8]

So by following this the characters I built will only roam, when my character is in range, I like that, they all use the random roam code, apart from the chasing spiders and guardians, that use behaviour trees.

[@MattAspland]

Yep exactly!

[@PatrickTheDM]

Great tool! I just wonder about if you need to link nav meshes. Can you set that up first and then change the settings to invoke? The way I handled this in my Skyrim mods was to set up trigger boxes to spawn the enemy NPCs that would be close to the player as they explored. This prevented them from using any processing power/being rendered until they were close enough to be needed/seen. Oh, and you could spawn them behind the player to give the feel that they were followed or missed a hiding NPC as well.

[@wolfiedgr8t]

Wow, didn’t know about this Matt. Nice one 👍

[@MattAspland]

Happy to show off a great new feature to you!

[@unsolvedbc]

Perfect for a large open world! thank you!

[@RiverFox_YT]

fantastic video. i have a question though. i want my ai to be able to move anywhere within my open world, and essentially chase me for a certain time until im out of its range, is it better to set this up on the character or on the ai? there will be random spawns of the ai around the map but they will go into like a sleep state untill i awaken them by going near them

[@hawkeyes4768]

currently build a game for fun on unreal (useing all the free assets)at a intermated lv and messing around with what u were teaching u on a roll u taken these complex things and explained and made them easy for anyone to follow keep up the great work do u have any cheats for AI world creating or Ai characters attacking player

[@MattAspland]

Thanks for the support, that's great to hear! This video might help for having an armed AI attack the player: kzbin.info/www/bejne/bGXWloyIpqeMhLM

[@LimitedPerfection]

Yep. Works. Lowered overhead on loading SIGNIFICANTLY and resolved an bug where I had to reload the nav mesh when generating new PCG terrain.

[@kmtsvetanov]

Question. Can I have a Navigation for the AI without a landscape? I'm building rooms and use static meshes for floor. Thank you!

[@knightofbrokenglass9237]

You Are A Life Saver!!!

[@knightofbrokenglass9237]

Bro - you are building my game

[@jasonheilig5312]

Wow this is Awesome

[@ZimCrusher]

QUESTION: Once the navInvoker is out of range of the AI character, they stop moving, but they do not stop thinking. Is there a way to turn them off, when out of bounds? Even the characters who I have as a 50/50 chance of moving, or standing still (when they select stand still) start constantly rechecking their move option, once the navInvoker moves away. Using more CPU.

[@SaltHuman]

use a trigger volume to spawn you ai char and then a distance variable which you hook up to both you trigger volume and your invoker , that way you can unload the ai char when you're far from it.

[@justsam4546]

Welp guess no team based ai vs ai , was worth a try Awesome vid as always btw thanks

[@RobVicars]

One of the only videos I've seen on this! So thank you. But do you know how you can do also include the movement of the navmesh bounds in this? I'm working on a prototype that adds procedural pieces of terrain - so it could stretch on infinitely, too big to have a navmesh bounds volume cover it. Looked all over and can't find any solution for this!

[@AkitaMix]

Have you found a solution for that?

[@HiraethGame]

Thanks, nice tutorial. Works perfect on normal level, but how to setup with partitioned world?

[@Enderking394]

The nav mesh ignores trees and rocks I placed with the foliage tool even though collision is BlockAll. How do I fix (unreal 5)

[@xlukasz123x8]

Amazing tutorial. I just ca from lmms (a free daw software) and i decided to switch since it didn’t offer enough convenience. It was

[@tldmbruno]

?? Did you switch to what? Isn't LMMS a music composing software, like FLStudio?

[@SamuelHale-fk9ij]

Hi Matt, thanks for this amazing tutorial. I have been trying to find out if there is an extra cost to in game performance for every invoker that is added? I want my enemy ai to have an invoker, but i can have 15 to 30 enemies at once pursuing or attacking the player. Will this cause a performance hit as there are obviously multiple invokers running at once and overlapping? Or doesn't it matter much? Regards, Samuel. I also have friendly ai supporting the player who also have invokers. My map is huge, so this seems to be the only way i can do ai navigation on my level.

[@ChengliangPan]

I found a problem the NavMeshBoundVolume will disappear when Character move too far, it's said about WorldPartioning, but I cannot solve this problem, please help

[@TheeScienceExplained]

Would this affect your Animal AI from the series you made? I mean would those values for roaming around be affected or anything else? Thanks and great content as always :)

[@MattAspland]

If you have those values set to a higher radius than your navigation invoker from this video, then they won’t move as they can’t reach their destination. To fix this you can either increase the radius of your navigation invoker, or decrease the radius of your animal AI movement. Great question!

[@TheeScienceExplained]

@@MattAspland Hey thanks for response! I've been working on this entire day, and yes your are right. Either increase player radius or decrease animal radius. None of these work for me. It is a too big of a performance hit. 50frames in editor, 25 in play. All because of a too large NavVolume. So I've decided to look into the Spawn System that was free recently, and trying to make it work with Animal AI. It seems to be very cheap and spawns all the animals, but they don't move? I guess it is since they require a navigation. I'm just wondering is it possible to keep all the animal behaviour while working with a spawn system? I think this is the answer for anyone having to spawn many AI on a larger world. Thanks again! :)

[@imaginaryconception]

how do you make sure the AI never strays too far from the player? That it stays within a specific radius?

[@StarieSki]

Could you do a dont move / keep calm Tutorial? from games such as until dawn man of Medan and ect. I Can’t find one anywhere

[@digimikeh]

hi!, thanks for this, while using invoker, do you still need to have NavMeshBoundsVolume covering the whole area?

[@AresWorlds]

yes

[@tastysnak]

I notice in the thumbnail the navigation area is a circle, but in the video its a square. Is there a way to change the shape of the area in Unreal? Having an equidistant nav area in all directions would be good to achieve.

[@MattAspland]

As far as I'm aware there is no way to change the shape of this no, at least in blueprints anyway. There may be in C++, but I haven't looked into it. The squares will try and stay as equidistant as possible, but even with a circle it will be slightly off due to it updating and spawning/removing them. The circle in the thumbnail was just for ease of showcasing the idea visually.

[@redgeciccone8218]

For a large world like 4033x4033 a boundery of this large will affect your FPS... I stuggle with that right now and decide to place many boundery small volume every where the player should go.

[@magegames6202]

can you add to player and AI so they can roam around a little but if you get close and they end up in your invoker they will chase instead of roaming and then go back to roam if player gets far enough?

[@engebionordeste6587]

You could make a basic template to start with every ti you start a new .

[@doblajesimberbe1966]

Nice video! I didn't know about navigation invokers an this is super useful. I have one question though, what can I do if my level is generated on runtime and everytime the player approaches to the edge of the world another chunk is created? What should I do with the navmesh volume?

[@draicor]

I think I read somewhere you need to have a persistent area on your world, one that never despawns, an dplace the navmesh bounds volume there

[@TorQueMoD]

Is updating the navigation volume in real-time actually more efficient though? Sure, disabling the AI is more efficient, but I'm not sure that the nav mesh is actually taking up any kind of resources. It's something that's baked when you build the level isn't it?

[@TorQueMoD]

@@Sammyhale30I thought the navmesh was baked though the same as lighting. So shouldn't it just be calculated once and culled from the renderer the same as any other geometry?

[@unrealdevop]

Oddly enough this isn't working for me, maybe it's a bug? Idk but it appears to work in the editor I can see it updating as I move the player around but when I play the character won't move and the invoker doesn't seem to be working. If I eject and press P to show the navigation mesh nothing is visible.

[@unrealdevop]

I solved it...I had enabled a World Partition setting and had forgotten about it.

[@cheemayt1530]

Bro You are Legend. You know that?

[@Jr-Mind]

Can you make a Splatoon shooting tutorial

[@Jr-Mind]

Make this

[@wesss9353]

Good video.

[@sarahlynn7807]

When I do this my fps drops to nothing with no ai in the world even. Any ideas?

[@Utopia2023Game2]

Thanks useFull Video

[@DeftlyJ]

If there is no Nav mesh, wouldn't the AI keep trying to move and fail? Wouldn't that cause issues?

[@carlosrivadulla8903]

how is this in terms of performance?. I mean, by not generating the navmesh on the entire map permanently it should save some performance but on the other side a real time generation may be worse

[@ThirstyThursten]

Fo me Dynamic is definitely worse.. Insane amount of FrameSkips and Drops.. I'm looking at setting up the invokers on static areas right now..

[@MarioMurkl]

You just same my whole project, thy mate!

[@AresWorlds]

it wont work on 2d flipbook characters

[@boombyte8849]

Actually UE nav system is far far away from food level.

[@intelligence-8007]