gameplay-ai

[lyric flint]

I could do that. I'd really rather have the navmesh just update when the doors move since that's significantly less work on a level that is 100% in-doors

[simple crest]

hmm. you and i have opposite ideas of what is significantly less work 😄

though there could be good cases for dynamic navmesh usage instead... imagining a really "w i d e" door where you need characters to run across naturally such as diagonal

[lyric flint]

? I click a boolean on the doors problem solved. Alternatively I am placing down hundreds of nav link proxies

[simple crest]

cpu work is a thing too...

[crimson galleon]

navmesh update is relatively cheap, one way or another - doesn't seem like something thats done a lot, just on door opening, even then it could be set to lazily update every second and probably be fine. Funny enough, Death Stranding had to hand place a ton of nav link proxies over all cliff drops so the Ai could traverse down.

[simple crest]

i mean...

• I would not personally ever call navmesh generation "relatively cheap". we might be agreeing that it's far from a death sentence, but it's not something you should just casually use. you could make it async so at least it won't hit the gamethread, but then it might incur a small delay before it takes effect now. I'll admit though it may not be a problem if your game is simple and you have ample CPU budget to throw away.
• unless you keep updating the navmesh while an animating door moves (expensive), you may have to wait for an animating door to fully open or close before you can actually invoke an update. that might cause weird AI behaviour, i.e. walking into a door that's closing or not choosing to go through door that is opening. with a nav link you could update it instantly when the door starts changing state. can maybe work around it a bit if you just have a collider for the door you turn on/off and the visual representation doesn't really do anything.

pros and cons anyway, do what you think is best

[viscid oasis]

Any clever ways I can force a pawn off a ledge?

Not trying to get the AI to jump down to the ground - I want them to walk straight off the ledge.

[celest python]

If bNotifyTick set to true, what could be the reason to a decorator not calling it's tick function?

[ocean wren]

When you reach the end of a path, just keep going in the last direction you were facing?

[simple crest]

AddMovementInput(FVector(towardsdeath));

[celest python]

😄

[crimson galleon]

might be able to get somewhere adjusting some of these values. Perching, for example, reduces the "hang over" look and drops them instead, might need a generous navmesh though. Zoombapup and HoJo bring up good points. You could also change your navmesh generation so steeper areas are still valid

[ocean wren]

it could be sweet release! MovementComponent::GoTowardsTheLight(FVector(m_vYourAncestorsAreWaiting));

Well, you get notified as you change path points and the final path point to go to just goes in that direction until its reached, so you could fudge that part to just... overshoot a bit 🙂 which seems like a very bad idea to me 🙂

But it'd look funny

Just be sure to post a video here

[viscid oasis]

lol TBH that's what I'm thinking

Thinking lemmings going over a cliff!

[ocean wren]

Do you ALWAYS want things to overshoot the paths though?

Is this something the player selects? i.e. a point to go to?

Or is it meant to be automated?

[viscid oasis]

Automated, only when there's no alternative created

So, additionally, the nav is generated at runtime

(but that may not really matter.)

[ocean wren]

I'm just thinking that if the path itself is trimmed to the navmesh bounds, then you'll have to check if the last nav path point to see if its near an edge of the navmesh (i.e. a side of a navpoly without a connecting poly)

[misty gale]

Aahh, lemmings. Good times.

[viscid oasis]

I was also thinking of using nav link and making it jump to a point way below the ground and making em die over a collision box

[ocean wren]

That does sound sensible, use the functionality that's there

Or you could do a Rama and automate it 🙂

Just launch yourself over any navpoly edge that isn't bordered by another navpoly

That sounds fun, I might try that 🙂

[gaunt pilot]

hi. how can cast to player AI in player controller?

[viscid oasis]

GetAIController()

[gaunt pilot]

its not work

[viscid oasis]

You're in the pawn, yeah?

Dumb Q but is your character using an AIController?

[gaunt pilot]

my main player character have ai and i wanna cast to ai in the player controller

[viscid oasis]

Okay, so where you cast to AIController and pop that into the playercharacterAI, that doesn't work?

Is it possible to disable AI Navmesh temporarily? Maybe that's my solution?

[misty gale]

Its not the navmesh itself blocking your character from walking of the ledge

Its whatever movement component you use along with the path obtained

Disabling the navmesh wouldnt give you a new location beyond some random edge :)

[viscid oasis]

hmm couldn't I override the character movement with just pure input?

[misty wharf]

if you just give the character movement input it will go where ever

only navigation movement locks into navmesh

[viscid oasis]

Noooooooooooooooo

[simple crest]

^ @viscid oasis

[viscid oasis]

Not working unfortunately.

[simple crest]

probably fighting against the AI which is in control of it or something

[viscid oasis]

Hmmmmm yeah

[simple crest]

reject ai controller return to lemminge

[viscid oasis]

Hold up.

Yep yep.

[gaunt pilot]

yes, you're right

[viscid oasis]

Had to run it on tick, but aside from a little blend hop worked like a charm.

[simple crest]

https://tenor.com/ba02F.gif

[viscid oasis]

lol

It looks to get to the edge and then I override it. The challenging bit is my navmesh is generated over a voxel of instanced meshes

[misty gale]

How so?

How does that change it ?

[celest python]

lmao 😄

[viscid oasis]

Mainly with debugging, tbh.

It's really weird. My first character attempts to stop and the movement input kicks in, and over it goes

but the subsequent characters just walk straight over.

[misty gale]

Herd mentality 🤔 or perhaps hive mind ai...

[viscid oasis]

... my god

BP_Skynet

I wonder if I don't bother with an AI Movement toward a goal at all. I can just have it run as an input in a certain direction, and override that whenever I need em to do something else.

It's a 2D plane anyway, so there's no real pathfinding tbh.

[misty gale]

Input or interp

Input sound better

[viscid oasis]

yeah input is working fine.

[celest python]

Anyone knows about this? nevermind

[viscid oasis]

Thanks for the help everyone

[sharp light]

I'm using FindPathToLocationSynchronously to get a predicted movement for my characters but I've noticed an issue. The character (cylinder) on the left is possessed by another player and the one on the right is just a character placed in the world. When I try to path through the character on the right, the pathing avoids the character properly. When I try to path through the character on the left the pathing wants to move right through.

If I run show Navigation I can see that the un-possessed character on the right is affecting the navmesh and the possessed character on the left is not. It's the same character actor in both instances with their mesh set to Can Ever Affect Navigation = True. Any idea what might be causing this?

If I enable Runtime Generation I see players now affect the navmesh .. but the pathing behavior becomes erratic with the movement trying to correct itself repeatedly. It's important that my characters follow the predicted path from FindPathToLocationSynchronously. Players will move only on their own turn so I don't need to worry about players pathing into eachother

[misty gale]

Are you calling move to several times?

[simple crest]

You're updating nav mesh data for dynamically moving characters... Simply stop doing this, it's a bad idea. Use detour or rvo or implement some other way for characters to avoid each other

Oh wait.

Sorry I missed the turn bit reading too fast on phone

Even still, you're going to have to do a bunch of weird messing around with this method

Like setting the currently active player to not affect navmesh gen, and setting all other characters to affect it, and update the mesh at the start of every turn

[sharp light]

I'm ok with this and I appreciate the suggestion!

[simple crest]

As for your original Q I didn't help at all for that, sorry :(

[sharp light]

My original Q?

[simple crest]

Like "Why are some characters affecting nav mesh and some aren't" ?

[celest python]

If an agent affects the navigation it causes issues

It wont be able to move properly or even fail to find a stable path for the goal

Because the point it's standing on wont have a navigation

I dont know if get the question right but

iirc you can also try to get the 'current path' from AI Controller instead of trying to predict it

And alter the process

[sharp light]

I think I'm gonna try disabling affecting navmesh for current player and updating the nav mesh after every move. Just gotta find where to trigger the navmesh update/rebuild in c++

I know I've done it before somewhere (I think in BP) but can't remember where or how

Ahh, right it's a console command Rebuild Navigation

Which .. doesn't seem to work anymore. hm

[sharp light]

Well, I'm calling UNavigationSystemV1::Build every time a player moves. I can't tell if it's actually DOING anything, the output log tells me
LogNavigationDataBuild: Display: UNavigationSystemV1::Build total execution time: 0.00s so either it's doing nothing or it's doing it really quickly.

My characters still aren't affecting the navigation mesh though even though I have them set to "Can ever affect navigation". I'm just waiting to see the navmesh update to show they are considered to be in the way then I'll deal with the tweaking of making sure the current player doesn't affect itself.

I'm thinking my navigation build isn't doing anything

[small gazelle]

how can i display AIPerception debugging?
I am in a laptop and cant press numpad 4

[sharp light]

I'm thinking Runtime Generation = Static completely prevents rebuilding, even when you try to force it

[sharp light]

it can't be rebound, as far as I know. You could turn on the on-screen keyboard and press it that way

[small gazelle]

it can be shown in editor?

like my upper image

[sharp light]

It will show above your other windows

you have to turn on numpad in the options button though

[small gazelle]

I made it

though i mean in blueprint view

[small gazelle]

here

[sharp light]

You want to show AI perception debugging in the blueprint editor?

[small gazelle]

right here, in the viewport

to adjust angles

[sharp light]

I think it can only run in in game - the component is not active when not playing

[small gazelle]

ok tyvm

[sharp light]

Np

[ocean wren]

wow, updating old UE code from really old versions of UE to 4.27 is a real chore 🙂

[tardy talon]

Whats better to use, pawnsensing or perception?

[small gazelle]

the boilerplate chatacter is not beign deteted by AIPerception sight what am doing wrong?

this was the issue

[ocean wren]

Well hell, I finally managed to get this damn thing compiling!

Kind of need an analytical method of getting closest point on the spline now though. Sampling it is not going to work out 🙂

Man, its a long time since I messed with Unreal character movement.. anyone know if there's a default air movement velocity? I need some aftertouch when launched in the air.. I'm pretty sure there was?

[misty gale]

isnt there a standard function for it?

[ocean wren]

Think so... but can't recall the name 🙂 haven't touched this stuff in many years 🙂

Same with the movement.. I know it exists, just don't have it saved in main memory anymore 🙂

[misty gale]

FindInputKeyClosestToWorldLocation

[ocean wren]

Hmm, doesn't that find the vertex and not the point on the spline?

[misty gale]

There's a ton of options 😛

I found Input key to be the one i was after atleast ^^

[ocean wren]

Thanks, I'll take a look tomorrow

Technically, I want the distance along the spline in spline 0..1 space that is closest to a world location.. 🙂

[misty gale]

Knowing the total diatance of the spline, all thats left in my original function is to divide by it

I think distance had to be updated manually when creating it tho? Didnt play to much around with it once my setup was working

[ocean wren]

Thinking of how to minimize the number of "closest" splines I need to check..

Imagine I've got say 1000 spline paths

[misty gale]

Need some rework aswell... some custom stuff .. where i can combine intersections etc

Probably some cached vector array of sorts

[sour fable]

anyone can help with ai vs ai?

[ocean wren]

Probably fudge it and have a large collision sphere to enable the spline checking for overlapping splines.. then do the checks for those

then the physics sweep and prune can at least minimize the spline checks

[misty gale]

I dont really need to know about the splines beyond the collision of them,

So that might be my best bet towards goal

[ocean wren]

Yeah, I'm riding them, so need to be able to check where to aim for etc

[misty gale]

Im simply fomlowing them, the navmesh handles the pathing already so

Riding them - rollercoaster kinda thing?

[ocean wren]

jet set radio kinda thing

or jet grind radio if you're in US I guess 🙂 for some reason they changed the name

[tardy talon]

wish me luck imma implement some flying AI

[lyric flint]

Hi all anyone know how I could have it so a For Loop from array dosen't fire the next loop until it's done one it is one ?

I'm trying to have it that the AI will got to array item 0 then on next loop on success item 1 and so one

[crimson crown]

In short, how would I make it so one AI pushes another out of the way?

What I've got right now is a series of AI characters moving towards a target location. When the first AI character gets to the target location, its 'AI Goto' node returns a success and it stops moving as if it were a static object. When subsequent AI characters get to the target location, they try to move around the first AI character so they can get within the acceptance range of the target location. If they manage to do so, it looks like they basically turn into a static object.

After enough time, there's too many AI characters sitting "statically" over the target location, the ones that have yet to reach within the acceptance radius are basically stuck perpetually trying to get there. What do I need to do with the AI that have already succeeded in their movement command so that they can get moved by those that have not?

[crimson crown]

Add another node following the delay. As far as the loop is concerned, the loop is done when it runs the last node in the body. Either that, or move the delay to before the move to node.

[lyric flint]

so I tried that it seemed to break the AI when it reached the first entry it kinda broke didn't really know whether it had succeed or failed etc so I scraped For loop for now trying a bit of a manual way of doing it

[high cedar]

I am using a tile grid system of my own design, and I have a job system for when I tell my workers to, say, build walls or furniture. How can I prevent my units from walking into a tile that has a pending job attached to it?

[high cedar]

I was thinking of using a grid EQS, but wasn't sure how to implement it

[crimson galleon]

That would be wise. For loop wont execute latently. What you are after is more along the lines of a recursive function that decides to continue executing after a given time.

[crimson galleon]

make your pending job nullify that are of navmesh

[high cedar]

should I do this by spawning ANavModifierVolume's?

[crimson galleon]

what is currently spawned/defined for the pending job area?

[high cedar]

my jobs are UObjects, which are added to my UTiles which are handled by my AGridWorldController. the gridworldcontroller has multiple ISM's to manage the in world meshes for the tiles. the Tiles know about their location in the world, and have a pointer back to the gridworld managing them

so when the job for making a wall is finished, the job is deleted -> tile gets a new UInstalledObject -> the ISM manager for walls places the mesh in that location which updates the nav area

so my first instinct is to place a ANavModifierVolume at that job's location, but the default ones that get spawned don't have a brush made

[crimson galleon]

i guess that works, unless you're saying it doesnt 😛 but i was wondering what was there because of there is already a mesh object to mark the pending job area, then it could just have a collision that affects the navmesh area, for example, first set it to obstacle just in case AI are current in or set to path through it, then to null to remove it (hopefully safely enough that any AI in that area have left it by the time it is nullified)

[high cedar]

only saying it doesnt right out of the box because newly spawned ANavModifierVolume has no UBrush x3x

just need to fix that I think

[crimson galleon]

ah, well if that doesnt work, maybe you can handle it with a simple mesh box that is hidden since collision can still work on hidden meshes

[high cedar]

hmmm, ok

[crimson galleon]

i know it sounds weird, im thinking of games where the area gets marked by a flag or the building framework or construction tape to show where it is to the player and that seems to double as a way to handle navmesh updating

[high cedar]

oh, that. I'm going to be using a decal actor that references a 100x100 size canvas render target to "color" the ISM meshes for what's going on. namely used for my marquee selection

[crimson galleon]

so the ISM gets creating after the pending job completes right? its not there during the pending job?

[high cedar]

yeah

for now, I might place a ghost model of what is to be placed later

[crimson galleon]

i think its a good visual call out, but also means you can handle the navmesh problem with that same mesh

[high cedar]

I think I'd still need to block the nav area if I change floor tile types

[crimson galleon]

most likely, but the pending area can handle the transition from normal to obstacle to null so that the thing built can already be null

i wouldn't think nullifying right away would be good for the rare occasion something is there already or is going through it, i guess if its turned based its probably not an issue

[high cedar]

definitely not turned based, more like a base builder like rimworld

[crimson galleon]

then i think it better to make it high cost (obstacle) first before nullifying

it would cover some situations, but i figure there still might be a problem where an AI decides to go through the high cost area because it's the only way to get through - then it nullifies, and now they are stuck, so i guess this needs a better solution regardless

[misty gale]

Would you need a new nav modifier when you already have the mesh instance? With collision it surely can affect nav aswell

[high cedar]

mesh hasn't been placed yet

[misty gale]

Ah , and ISMs cant be set invisible per instance i think... guess you need a placeholder

[high cedar]

yeah

[misty gale]

Another ISM

😄

which basically is just an invisible cube for doing this^^

[high cedar]

right now I'm trying to spawn an AActor with a UBoxComponent at the location

[crimson galleon]

i did recommend this 😛

[high cedar]

I mean.....

[misty gale]

guess my reading was to fast 😛

[crimson galleon]

but would ISM even be necessary? its a temporary thing

[misty gale]

true, it could be anything really

but walls?

there's a lot of questions i guess

if its a 1000 block wall, perhaps?

[crimson galleon]

i think its like rimworld

[misty gale]

if its 1 by 1? perhaps not

never player

[crimson galleon]

never played, so if you are familiar, then maybe ISM is applicable

well then

[high cedar]

I can definitely confirm spawning 1000 actors just to block off an area isn't a good idea

[misty gale]

reminds me of that other game... dont starve?

[crimson galleon]

well, its up to the player isnt it?

[high cedar]

I guess I'll make a ISM for this

[crimson galleon]

dont starve is more 1 by 1 as you mention

[misty gale]

thats what i was thinking. Either block the player from doing this in the first place, or atleast dont crash to 1 fps if they do 😄

[crimson galleon]

i think in rimworld you can cue up several tiles

[high cedar]

yeah

[crimson galleon]

so yeah, i guess limit the player there

i was actually thinking of 1 tile at a time

[high cedar]

well the AI units can only work on one tile at a time, but right now if they stand in tiles that have pending jobs then another unit builds a wall on top of them

[crimson galleon]

well... couldnt you tell the AI to get the hell outta there at some point?

[high cedar]

which I could either A: teleport them out, or B: prevent them from standing where a pending job is

[misty gale]

before "completing" the building, get all units in volume, and tell them to gth out

[crimson galleon]

the issue i can think of, is a situation where multiple tiles are already built on and then building another makes it very limiting to where the AI can path to, but i still think its better to try to tell the AI to move somewhere then solve for teleport

[misty gale]

Try to move -> if failed -> teleport

[crimson galleon]

i think there is a degree of player-made problem, like boxing in their own units, but aside from that, the AI should obviously try to get out of that area

[ocean wren]

Have a "reserved" flag on the tile, so that pending work disables new workers going there?

[misty gale]

That wouldnt directly work with existing solution I think , since the ai is already using the nav system

[ocean wren]

Oh, so you already have an object.. so my advice, would be to disable collision on the builders and tiles entirely

[misty gale]

atleast, as i understood it..

[ocean wren]

nobody ever collides the builders with the tiles 🙂

use the pathfinding to avoid the tiles sure.. but collide? nope

[high cedar]

yeah, using it instead of doing something like adding A* pathing 🙃

[ocean wren]

don't do that 🙂

A* is easy man

collision is way too bloody harsh and has tons of edge cases

[high cedar]

like preventing the unit from standing on a tile with a pending job

[ocean wren]

There's even an A* pathfinder in the codebase, built for Fortnite back when it had builder mode

yeah, but a pending job shouldn't block a unit right? so having collision on it is weird

seriously, play almost any builder game and you'll see, the units path through "pending" builds.. they path around built items

[misty gale]

semi built is also blocking, isnt it ? in games where there are stages of build progress

[crimson galleon]

i was thinking of when the job completes and several other jobs have been cued, how the AI could path out but then has to continue to find a place to move to until it can find a free space - though again, i feel part of this is caused by the player - meaning the AI could still get boxed in

i dont play many builder games though 😦

[ocean wren]

Well, yeah, players can always be idiots.. but you can always teleport in those extreme cases, or just let the builder die (timberborn kills em)

[crimson galleon]

the ones im thinking of usually have a buffer around the built structure

[ocean wren]

Its different between completely unbuilt but planned and building-in-progress

[misty gale]

Ye

[crimson galleon]

it would seem better to make the area high cost before nullifying it to get AI out of that area and hopefully keep them out, but even then, its not 100%

[ocean wren]

Yeah, this is the kind of fun project where you have to playtest what happens

See what you find acceptable

But for my part, I'd try and avoid physics interactions on objects as much as possible, both for performance and for AI reasons

[high cedar]

haven't really seen many 3d ones, tho xD

[midnight scroll]

The earlier conversation with building around AI is amusing. I play Oxygen Not Included.. They didn't bother fixing it, they just mark the ai as "Entombed". Suffocating til death or release. 😄

[high cedar]

yeah

[ocean wren]

Timberborn kills your builders for all sorts of reasons 🙂

[misty gale]

Not sure there's a proper fix for it anyways 😛

[crimson galleon]

well i think boxing in your own AI is the fault of the player

[ocean wren]

I don't think there is

[crimson galleon]

im just thinking of how to get the AI the hell out of build areas in particular cases

[ocean wren]

I think its fine to kill players boxing in builders... its another mechanism the player can learn

[misty gale]

heck even The Sims kills the npc if the player blocks them 😛

[crimson galleon]

i agree, or maybe the player tears down what they built to free them

[ocean wren]

You don't, you just don't collide them and hope the pathing has reduced the chances

[misty gale]

teleporting could open you up to much worse things anyways

all these bugs, edge cases and whatnot

[crimson galleon]

lol, still sounds like the same problem of trying to get them to a free space somehow

[ocean wren]

I guess the teleporting thing depends a lot on the game style

[midnight scroll]

Anyone who plays a builder game more than five minutes pretty much understands that you have to build things up in tiers. And as a developer, you really shouldn't fix all the player's problems or you're making an ant farm more than a sandbox game. Player still needs to play the game.

[crimson galleon]

i still like having a buffer, but only if that works for the design obviously, then the AI can always move between built tiles

[high cedar]

well in my case it might work, since it's going to be a robot themed game, so teleporting them out of stuck situations may work

[ocean wren]

Not really, I mean they're meant to be doing something, so they shouldn't be hanging around on a tile in progress anyway

[crimson galleon]

i agree, the AI will probably be doing something, though in some cases and AI might want to path through a built area and then gets stuck ( i guess they die ) or the player builds a clustered area of stuff all packed together making it limiting where the AI can move out to

[misty gale]

Deploy "escape" jet-packs!

[crimson galleon]

i think it would work to have them "ghost" through until they can get to a navigable spot

just b-line to nearest place

[ocean wren]

I think most games get around it by not building things immediately. So if you build an enclosure, most of the AI will be able to pathfind out of it by the time its complete

[crimson galleon]

and if worst case, put a timer that kills them if they take too long

[ocean wren]

I guess this is something you should test per-game

[crimson galleon]

im thinking of blizzard rts games where there is a buffer between buildings so builders and similar sized units can always move between them

[ocean wren]

Build rates and number of builder units etc.. probably impacts this a lot

[crimson galleon]

pretty sure the buffers are high cost

[high cedar]

can't really do that, remember this is a base builder like rimworld or dwarf fortress, but in 3d

[crimson galleon]

games ive not played 😜 but if it doesnt work it doesnt work

kill em, kill em all

[misty gale]

robots would just run out of jucie , stop working

[celest python]

Is it normal my KeyID is 255 from the beginning?

I guess this is causing the issue I'm trying to solve since yesterday

Same blackboard key on another BTTask is not 255

[simple crest]

that's an invalid key though

[celest python]

Isnt invalid is -1?

[simple crest]

no

[celest python]

lol Epic setting a negative value for uint8

        typedef uint8 FKey;
    const FKey InvalidKey = FKey(-1);

It'll be 255 if set to -1 i guess

[simple crest]

so the obvious hope is that you just didn't pick a key with your FBlackboardKeySelector

and the non-hope is that you found another bug in the least maintained systems in UE4

[celest python]

I guess I found a bug or I discovered something else

Because I solved now

TargetGoal.ResolveSelectedKey(*OwnerComp.GetBlackboardComponent()->GetBlackboardAsset());

I needed to call this manually

Why would I have to* resolve the key by myself on ExecuteTask?

Anyway in the end it appears to be fixed, thanks for showing interest in my issue HoJo 😊

[round jungle]

how to make ai?

im new here

[tardy talon]

Yiure gonna need more specific questions as well as do some research yourself

Try to figure out how to make AI and if you get stuck on a specific problem then you can ask here and get a useful answer

[sharp light]

Sounds like you might be better off using waypoints than the ai pathing. I feel like it will be tough to get that level of accuracy. I think the biggest thing will be making sure your agent radius keeps the ai an accurate number of units away from the walls

(this coming from someone not super experienced with this)

Hit "show > navigation" in the editor to see the effects of increased agent radius

Yeaaah, I've had similar experiences with inconsistencies in the AI movement. Actually very similar to what you pasted there except my problem was the AI would slow down around corners https://www.youtube.com/watch?v=X2X5gexrugo

Hmm maybe try tweaking the "Max Simplification Error"? If I see to recall, that will affect how complex the shapes are

Might me able to tweak it to make the corners more .. corner-y

Hmm, try tweaking the character movement's acceleration too. Possibly if it's high enough you won't see the slowdown?

but it might just kinda jitter around .

You're welcome!

In the characters make sure "Can ever affect navigation" is disabled for the class defaults, capsule (if there is one), meshes, etc

Oh wait, are they TRYING to walk through eachother but they collide?

Ok, that's just normal collision that needs to be tweaked. Gotta be either capsule or your mesh that collides with others of the same type

What is the "proper" way to change navmesh generation? (Cell size + agent radius). I see I have these properties directly on my RecastNavMesh in the world but editing them gives the error

LogNavigation: Warning: Changing AgentRadius directly on RecastNavMesh instance is unsupported. Please use Project Settings > NavigationSystem > SupportedAgents to change AgentRadius

If I go to NavigationSystem > SupportedAgents, I can add a supported agent but what exactly does that DO? Define defaults to be used for RecastNavMesh instances? I deleted my recastnavmesh to force it to regenerate and now I get

LogNavigation: Warning: NavData RegistrationFailed_AgentNotValid, NavData instance contains navmesh that doesn't support any of expected agent types.

Really unsure what the proper process is here.

Oh, I see.. it's weird. You gotta change params in the Navigation System settings, then delete your RecastNavMesh, then click your NavMeshBoundsVolume, uncheck "Supported Agents > Default" (or whatever your agent name is), then check it again.

I get some REALLY weird navmesh generation though. I mean, look at this. With an agent radius of 20, it generated the mesh so it literally clips into the object

Ok so that ⬆️ is a result of the Max Simplification Error. It simplified the shape so much that it clipped the object.

Do you have the mesh set to no collision?

Hmmmm are you sure there's no other component on them that might be colliding?

I guess it's POSSIBLE it's the AI movement doing this. The movement finds it can't go around the enemy so it completes a partial movement that just leads up to the enemy ..

For testing, maybe make the path wide enough so that one COULD go around the other and if you could just plop an enemy down and keep it stationary

make sure that the moving enemy goes around instead of trying to go through

that should at least tell you if it's the AI pathing or something weird with collision channels

Ok, so it is an AI pathing thing

Somehow your enemies are still affecting navigation

It's weird because they should not affect nav generation by default

What plugin? Just out of curiosity

[sharp light]

When an AI move is blocked, it will sit there trying to move for 4-5 seconds without success. Is there any way to lower this timeout?

[sharp light]

⬆️ Found my answer

UPathFollowingComponent* PFComp = GetPathFollowingComponent();
PFComp->SetBlockDetection(5.0f, 0.2f, 3);

These numbers are for BlockDetectionDistance (default 10.0), BlockDetectionInterval (defaut 0.5) and BlockDetectionSampleCount (Default 10). By lowering the detection distance and sample count, my AI will timeout within a second if it is blocked

[glass onyx]

Question; for static navmesh level streaming, when building a path to an area that is not loaded, does the path building job handle loading in the sublevels?

[ocean wren]

Doubt it

[sharp light]

Anyone have success with the crowd avoidance? My AI keep running into eachother .. it's like the agent radius is too small, but I see no place to configure that. It doesn't seem to use the same agent radius as normal pathing

[sharp light]

Here's what my crowd detour currently looks like. Often the player will correct themselves multiple times, sometimes they will get stuck on other players. I really don't care if they take the FASTEST path but I definitely want it to work cleaner than this, ESPECIALLY since there aren't even any other moving actors.

[pastel drift]

Is there no way to retrieve which "CanBeSeenFrom" point the AI saw the perception stimuli? Currently my working solution is to do those traces myself to retrieve that data.

[old adder]

Does behaviour tree has a OnEnd/OnFinish event that i can bind to?

[crimson galleon]

there might be this of a specific task or condition, but not the tree itself, BT executes as soon as it is told to run

[old adder]

It does have an OnTaskFinish

But that is quite specific

[crimson galleon]

well BT's dont really finish

a task within a BT can though

[old adder]

but it does know what is loop or runonce

[crimson galleon]

BT's can loop

[old adder]

anyway I can get an event when it restart from root?

[crimson galleon]

there is a loop condition

i dont really understand

[old adder]

Ah I mean, it does know where root is to return to it

any event indicating a restart/end that I can get?

There seem to be no composite node event.

[crimson galleon]

i still dont get it, i think you're trying to do something that doesn't fundamentally work with how BTs operate. I believe BTs execute from the root each time and will change to a different branch based on how conditions change

you start from root, then a selector to decide which branch, even if there is only one, are you trying to check something from the root level every time it executes? I guess there might be a way to run a task at the very beginning of the BT each time as a way to determine when it restarted, but again, im pretty sure that's every frame

[modest totem]

Hello, I'm working on City, i want create traffic with simple cars (color boxes/pawns). I know i can use splines but I don't know what to start with. Then i want to spawn car and tell him to go to this location and he will go along the splines. Any help

[astral sail]

Hey ! I followed a Youtube tutorial to start with IA, i'm quite happy with the result
My wolf is chasing me and attacking me when in melee range.
Issue is, because of the 1.2 second delay, he is not moving anymore when he's attacking. It's waiting his attack to finish before allowing him to move again.
I'd like to copy the WoW mechanism on that matter. But if i change the Parallel finish mode, it wont even wait for the attack to be finished.
How to make him finish the attack animation while chasing me if i start moving during his attack ?

[viscid oasis]

Look into anim notifies.

You using montages?

[astral sail]

yes i use a anim montage

upper body

i think ive done like the tutorial says

in the tutorial, result is the same

the character is attacking without moving xD

he set up so he can attack while moving with the player character

but the AI doesnt

[viscid oasis]

So, if I understand correctly, you don'

t want the wolf to move until the animation attack has finished, yeah?

[astral sail]

no no, that is what is happening right now

I do want him to be able to move whatever he's attacking or not

right now, attacking makes him stop moving

[viscid oasis]

ohhh

Yeah, sorry

[astral sail]

🙂

[viscid oasis]

So, two things obviously to check. 1. the actor is allowed to both move and attack at the same time. By the sounds of it, that's working.

Now you want to ensure the animation blend is able to work with the wolf attack animation + whatever locomotion?

[astral sail]

yeah

thing is

i feel like right now

even if he's attacking while not moving

only upper body attacks

i mean im fine with that

but maybe thats a hint

regarding how the logic is right now

[viscid oasis]

Yeah

[astral sail]

maybe i did the blend wrong or smth

[viscid oasis]

okay, and locomotion is a blend 1D from idle (X=0) to full movement (X=400) or something like that?

[astral sail]

yeah

simple BS

[viscid oasis]

yeah cool cool.

So from what I can see your instincts are right - you want to blend between the two animation from a certain bone and up / down

[astral sail]

i guess yeah

[viscid oasis]

Okay, I'm a bit rusty but try a blend depth on your wolf neck of 1, not 0.

And see what happens.

And triple check if that bone is called what you're referencing there.

[astral sail]

yeah i copy-pasted it

[viscid oasis]

yeah nice

[astral sail]

let me try depth

it doesnt change anything

i mean im actually unsure

thing is he is attacking while "finishing" movement

or if you prefer

he's starting the attack before stoping movement

but attacking leads to stop movement

i feel like this main issue is related to the Behavior Tree

[viscid oasis]

Show me the BT?

[astral sail]

removing the delay will cause him to not have a cooldown

the 1.2s delay is in MeleeAttack

[viscid oasis]

That's okay. Would it work if his attack animation had to take into account he's ready to attack again?

Ahh

Ok, first reverse what I've done JIC.

[astral sail]

yep

set to 0

[viscid oasis]

Cool

So, in your attack montage, you want to create a notify

that signals the end of the animation.

What you wanna do is have a way for your BT to check if the wolf is ready to attack again. This is different to your cooldown and is more about the animation has completed.

[astral sail]

so its too soon in the anim

i thought it was to be used later

to trigger the damage

[viscid oasis]

Yeah, but you also want to notify that the montage is over.

[astral sail]

i guess its another notify ?

ok yes

makes sens

[viscid oasis]

yep.

[astral sail]

let me put it at the end of anim

but the anim itself

[viscid oasis]

There's a few ways to do this, TBH, but this is a way I prefer since it's more event-driven.

[astral sail]

is shorter than the time between attacks

that im thinking of

[viscid oasis]

Yeah like 'AttackFinish' or something.

[astral sail]

i want his cooldown to be longer

[viscid oasis]

I reckon start your cooldown after the animation has finished, but up to you.

[astral sail]

sure

so, how do i link

this "notify"

to the behavior

^^

[viscid oasis]

Great question

ok, so your anim notify can be signalled from your animation instance.

AKA animation blueprint.

If I recall correctly, this can also be called on your Pawn BP too.

Either way, you want to then get a reference to your AIController -> BT -> SetBlackboardKey(Bool) bWolfAnimationReady (or something).

So, first create the key in your BT.

[astral sail]

bool ?

[viscid oasis]

yeah true / false.

Boolean value.

There's different types of Blackboard keys you can set. One of them is a bool. You still have to feed in the name of the key.

[astral sail]

ofc ofc

i already have few BB keys

[viscid oasis]

Ah nice

[astral sail]

Then we need to programm a new task ? or service ?

[viscid oasis]

Ah you can add it as a task I think

[astral sail]

(I can share screen in pm if you want)

[viscid oasis]

Add to the 'CanSeePlayer' task stack you got there

As another check.

[astral sail]

those are decorators

shall i create a service ?

no ok

but its a service i mean ^^ not a task, right ?

started this :

wonder if its the right positioning

[viscid oasis]

Close. But I'd treat the 'wolf animation ready' as just a value.

And I'd set it off and on via the animation BP.

[astral sail]

with a cast, then

[viscid oasis]

Yeah a few levels deep, I'm afraid.

We need to tell the BB about the new value.

This is how I'd do it, but there's other ways naturally.

so I'd image it'd be a chain like Blackboard->AIC->Pawn->AnimBP

[astral sail]

oh i was starting in the event graph from the animBP

but ok

ok, where do you create that chain exactly ?

in the AI blueprint ?

[viscid oasis]

Two places - up to you.

Pawn.

Or Animation BP

[astral sail]

(a bit lost tbh)

ok lets go with anim bp

[viscid oasis]

Cool

[astral sail]

do i use the notify there

[viscid oasis]

So Animation Blueprint is a class that sits under Pawn.

Yep

[astral sail]

yes

I've created a bool : "IsAttackFinished"

[viscid oasis]

Great

[astral sail]

How do I set it ?

[viscid oasis]

Where have you created that bool?

[astral sail]

AnimBP

🙃

[viscid oasis]

Ah, no create it on your Blackboard.

[astral sail]

oh we're using this one

its there

ok

already done

[viscid oasis]

Great great

So, now you have to reference your blackboard via your animation blueprint.

[astral sail]

this i fail to

[viscid oasis]

Well, how do you think you'd go about it?

[astral sail]

with a cast ?

i cant cast to Blackboard_wolf

also tried cast to BB component

dunno what to put in there

[viscid oasis]

Why can't you?

[astral sail]

dunno 😶

[viscid oasis]

heh

[astral sail]

trying this

[viscid oasis]

Lemme show you

oh, paste what you've got

[viscid oasis]

Ah, good idea but our blueprint doesn't know how to reference that.

You've gotta move up the chain, so to speak.

[astral sail]

so, AI

[viscid oasis]

So if you wanted to reference your pawn, how would you do that?

[astral sail]

but then it needs something

wait i try again

[viscid oasis]

You know where the AI lives?

[astral sail]

well there will be multiple wolfs in the game

so im unsure on how to use the animBP

[viscid oasis]

I mean, your AI Blackboard / Behaviour Tree.

[astral sail]

"self" ?

[viscid oasis]

hmm kinda.

[astral sail]

self actor ?

[viscid oasis]

Let's talk about inheritance for a second. That'll help.

You know how inheritance works?

[astral sail]

i kind of understand it regarding parent/child blueprints

thats about it

[viscid oasis]

Okay. Well, basically things inherit from a base class. This is kinda fundamental to OOP but whatever.

[astral sail]

okay

[viscid oasis]

Okay, so in a typical game

PlayerController
---- Pawn
---- SkelatonMesh
--- AnimationBlueprint

[astral sail]

right

[viscid oasis]

Ah, technically the pawn doesn't live under the player controller.

The Player Controller just possess the Pawn - makes a reference to it.

But I digress.

[astral sail]

yes true

[viscid oasis]

When you have AI
AI Controller
---Pawn
---- SkeltonMesh
---AnimBP
--Blackboard
--Behavioural Tree

Same deal - pawn doesn't technically inherit.

[astral sail]

okay yes

makes sense with the previous image

[viscid oasis]

So, in most cases, you have to tell the blueprint what you want to access and see.

[astral sail]

so in this case

we want to access the blackboard from the animBP

[viscid oasis]

Yep, but we need to go up the tree.

[astral sail]

cast to AI_wolf ?

[viscid oasis]

Gotta up the tree

AI Controller
---Pawn
---- SkeltonMesh
---AnimBP (start here)
--Blackboard
--Behavioural Tree

[astral sail]

isn't AI controller the top ?

[viscid oasis]

Yep, correct.

AH

[astral sail]

my AI controller for wolf is AI_wolf

[viscid oasis]

No no

Sorry

ugh, lemme draw this.

[astral sail]

Yeah ?

[viscid oasis]

Okay, so you're at the blueprint animation.

[astral sail]

i dont get it xD

i want to access behavior tree

[viscid oasis]

That's okay. This is a new mental model

[astral sail]

blackboard *

no i mean i get your model !

i dont get what im missing

[viscid oasis]

You're at the Animation Blueprint. You have to go up.

Here

[astral sail]

oooke

ok so a lot of get

let me try

tried get skeletal mesh

[viscid oasis]

I'll give you a hint

[astral sail]

<

wanted to start climbing your model

[viscid oasis]

The AnimBP is directly accessible by the pawn.

BP_Char is my pawn.

Unreal, understandably, has some things under the hood to make accessing parent objects easier / safer etc.

[astral sail]

ok let me try

[viscid oasis]

Good! BUT! How does the blueprint know what sort of controller you're referencing?

[astral sail]

still cant access blackboard_wolf

[astral sail]

oh

didnt see

[viscid oasis]

Clooooose

Get a little more specific and you're there.

[astral sail]

yeah, one cast per action

makes sense

[viscid oasis]

yep; you're just saying 'Hey, blueprint, I want THIS specific class."

[astral sail]

by the way

would the cast work if i put get AI controller instead

?

[viscid oasis]

Great question.

[astral sail]

controller will work with both i guess ?

[viscid oasis]

I'll be honest, AI Controller for me doesn't work for some reason, despite my having an AI Controller.

[astral sail]

where get AI controller is only working if its AI

ok ok

[viscid oasis]

Controller for me works. I'll dig into the code.

[astral sail]

using the normal one

[viscid oasis]

Defs if it's a Player Controller ,it's controller.

So, with how AIs and stuff work, you won't get access specifically to a Wolf_Blackboard.

So we gotta use a name reference to that specific key.

[astral sail]

the name we used

we'll use make litteral namer

right ?

[viscid oasis]

Yeah.

[astral sail]

ok thats why

[astral sail]

this is what i was missing

[viscid oasis]

In this case, it's a name.

And it's VERY specific, so be careful

I've had issues in the past with conversions of strings to name, or enum to literal bits etc.

Strings you should be fine, but JIC, use names.

[astral sail]

yeah is a name

let me screen

[viscid oasis]

nice.

[astral sail]

so now

i dont really know if it will actually help in the behaviour tree

what i mean is

2 things :

1. should not this one be elsewhere ?

and 2) We need to untick that boolean at some point, right ?

just in case :

[viscid oasis]

Good questions

Q1. Should that be elsewhere? Well.. it's up to you.

Basically, if you don't want your wolf to do anything until that animation is true, then put it there.

but entirely up to how you want to approach it.

In answer to Q2; Yeah, you want to have a trigger for when the animation starts and when it stops.

And it's almost identical to the animationstart - you just need an animation notify for when the animation should be finished.

[astral sail]

well i feel like i dont want to interfere the MOVEMENT with my IsAnimFinished

as i said i want him to be able to move freely no matter what

if a wolf chases you, he wont stop when he has to bite ^^

[astral sail]

alright, so again another notify

aaand another question to myself on where to put the decorator

[astral sail]

the other way around, right ? We just did that, setting animfinish

[round sand]

Hey,
I have used a single blackboard for two behavior tree but the boolean keys seem to have different instances for both the boards. Any way I can use the same instance of the board?

[viscid oasis]

@round sand yeah, should be a setting on the blackboard that says sync. (or something like that)

@astral sail Yeah, pretty much you're just setting the bool value the other way.

This might just be a UE5 thing, but in my test I had access errors if I didn't reference the component directly.

[round sand]

in my cpp I think i have made objects of blackboard instead of using the one which is already been instantiated

[viscid oasis]

@astral sail might cause you issues -

[astral sail]

what do you mean ?

[viscid oasis]

Looks good - run a breakpoint on that 'Get Blackboard' JIC.

[astral sail]

oh

yeah no we use the GET

right ?

[viscid oasis]

There's a func called 'GetBlackboard', and there's the component itself.

[astral sail]

yes, i'm not touching that

[viscid oasis]

Try GET and if you have issues, reference the other one.

[viscid oasis]

It'd be pointing to exactly the same one. My AI Controller is a bit modified

[astral sail]

we re using this one

[viscid oasis]

You -should- be okay with that.

Well see!

[astral sail]

yeah

okay

run a breakpoint ?

[viscid oasis]

Right click on that node

er.. component.

And 'Toggle break'

Basically the system will stop and take you to that when it's triggered. Handy for debugging.

[astral sail]

works on the cast

but not on the function

[viscid oasis]

Yeah, fine.

Cool cool.

[astral sail]

that will debug what ?

[viscid oasis]

Ah. Debug as in if you have a bug in your game

It can help you get rid of that bug - debug.

[astral sail]

nevermind

i mean

i understand this helps debugging

without having to print string or wtv

but i dont know how you get notified

that, i.e., this castTo failed

[viscid oasis]

The editor will literally stop and take you there

[astral sail]

oh

ok

[viscid oasis]

When that point gets highlighted. You can hover on the end points and it'll say stuff

Yeah, it's fine for small things, like 'is this running?'

[astral sail]

okay

[viscid oasis]

Don't worry too much about it.

[astral sail]

so now

that i have my 2 events

i dont know where to put the IsAnimFinished decoration

in melee attack ?

[viscid oasis]

Do you need that, though?

It turns off in the BT once the animation finishes.e

[astral sail]

yeah that's what i thought

but

that's why i was wondering about the link between all of that

and my issue 😄

how is all of that related

[viscid oasis]

mmm?

[astral sail]

to letting the wolf move freely

shall him be attacking or not

👀

[viscid oasis]

Sorry, I'm not sure of your question?

[astral sail]

Well

[viscid oasis]

Should the wolf be able to move regardless of its attack?

[astral sail]

well that was my issue , maybe i misexplained

its like

he is stoping

when he's attacking

It looks as follows :

Chase me => Is in melee range ? Yes => ATTACK and wait before doing anything else

[viscid oasis]

I guess you want to check if the wolf is able to attack again?

So maybe you put the animation ready check in there?

[astral sail]

i'm not sure to get it

let me just try

[viscid oasis]

Yeah, see if it's somewhat working

[astral sail]

right now

[viscid oasis]

Then tweak it based on your logic.

[astral sail]

with the IsAnimFinished thing on the top

the wolf is not even moving

[viscid oasis]

What's the default bool state?

[astral sail]

is there a default somewhere ?

when created in a BB i dont see where

[viscid oasis]

Click on it in the BB

[viscid oasis]

er..

Maybe I'm crazy.

[astral sail]

no but like

i think i know why

and thats why i was wondering

about the positionning

of that decorator

like

this bool

get touched

when the attack anim is called

but at the beginning, the wolf doesnt attack me YET

so the Bool IsAnimFinished

is False

and will ever be

[viscid oasis]

hold up

Your bool state - is it telling the BT that the wolf is ready to attack, or that it can't attack?

[astral sail]

its telling that the anim has started or that the anim has ended

attack anim *

[viscid oasis]

Okay, so if there's no animation started, you can go ahead and do the rest of the BT, yeah?

[astral sail]

well, the decorator is at the top

so i guess it returns false

at the very beginning

and that is why the wolf isnt moving ?

[viscid oasis]

Yeah, so it needs to have it's default state set to true.

[astral sail]

how do i do that :/

[viscid oasis]

Which you should be able to do there? But maybe I'm wrong.

One sec.

[astral sail]

i mean i can set it to true at begin play

but i feel like it wont help us

let me try

[viscid oasis]

Nah that'll work

You can also just reverse the decorator - to 'not set', and switch your aim notify

[astral sail]

ok so

i did this

i jsut set it

[viscid oasis]

So if the wolf attacks, turn ON the bool.

[astral sail]

at begin play

so yes

yes its happening

but now

[viscid oasis]

good

[astral sail]

everything is smooth

but

i have the same issue

regarding wolf's movement

its same as before

[viscid oasis]

As in, the wolf is moving and not attacking, or attacking and not moving?

[astral sail]

yes

let me remove the delay

sorry

[viscid oasis]

lol which one?

[astral sail]

in "MeleeAttack

"

now he doesnt wait between attacks

he'senraged ;D

same pb as before

i put the delay in what we've created maybe ?

[viscid oasis]

heh

[astral sail]

in the FINISH notify

?

but then he will just stop moving

let me try

[viscid oasis]

So, the wolf attacks and keeps moving?

Monitor your BT as the wolf is moving - see if you can follow it along

[astral sail]

doesnt work, as the BT is the master

yeah i have two screen

i know exactly whats happening

shall i screenshare ? 🙂

[viscid oasis]

sure

[elfin sonnet]

Is there any way how I can get a blacboard value into a EQS context?

I have a vector position n the blackboard and I want to use the position as a context for EQS generator

but the blackboard key selector have nowhere to be shown, because the context is just an item in the generator

[elfin sonnet]

hmm, I think I found a "solution". I will not search for the blackboard value from the context, but I will create a standalone task that will take the blackboard value and hard-set a context value.

the context will basically act just as a temp data structure

[misty wharf]

@elfin sonnet how are you setting context values directly from a task? Just wondering as I had some EQS stuff I wanted to parametrize and it didn't seem very straightforward to do that

[elfin sonnet]

yeah I haven¨t figured it out yet, but I just discovered something called FAIDataProviderValue - that could maybe work with the first method

[misty wharf]

Ah :)

[elfin sonnet]

https://forums.unrealengine.com/t/solved-how-to-pass-a-float-to-numerical-values-in-the-eqs/99408

yeah, this seems to be it

gonna try to replicate this

so maybe the context could take the value from the generator data-bound value

[misty wharf]

It would be handy to be able to directly pass values into the context but it doesn't seem like how it was designed which is a bit odd

I looked into it a bit and couldn't find a good way to either construct a context, pass values into it, then pass it into the query, or get the context from a given query object.... I'd imagine it might exist but wasn't very obvious at least where it is

[elfin sonnet]

my main problem is that I can't pass the blackboard values by reference (into the EQS context) so I have to hardcode the BB key names, lol. I will see if that works, but for obvious reasons I'll have to write a custom generator that will hopefully be able to choose a BB key by variable.

and then somehow get that variable from the generator to the context... if context supports getting the "parent" generator

but I have no idea if that's the correct way

[misty wharf]

something that could be worth a try is try getting the querier

if you pass the pawn as the querier, you can then grab its AI Controller, and grab its BB

you could then access the BB directly, and maybe you can set the BB key names as parameters for the context so you can configure it in the EQS editor

Whether it's any better than what you proposed not sure :D

[elfin sonnet]

oh yeah, I am actually doing that now 😄

I am yet to test it, but I think it will work.

I had this, but that ofc doesn't work (there is nowhere to set the values in the editor, the context is just a data structure for the generator)

so I have to hard-code the key names as FName

instead of FBlackboardKeySelector

if it won't work I will have to read up on the FAIDataProviderValue and eventually try passing the "start location" via the generator into the context

[round sand]

hey how to sync a single blackboard with two behavior trees?

[modest totem]

Hello, I'm working on City, i want create traffic with simple cars (color boxes/pawns). I know i can use splines but I don't know what to start with. Then i want to spawn car and tell him to go to this location and he will go along the splines. Any help

[ocean wren]

You'll have to try something first. You know you want to use splines already, so just look at the spline component and what functions its got available to start with.

[modest totem]

yeah but main thing for me is how to make AI find path like what splines do bot needs to use to get to location

[ocean wren]

sort them by distance from the end of the spline to the target location?

It sounds like what you actually want is more of a graph

say a graph of waypoints.. a "waypoint graph" if you prefer 🙂

https://www.pcgamer.com/sensorium-galaxy-metaverse-ai-npc-chatbot-vr/

[misty gale]

I wonder...

Waypoints sounds nice actually

But i wonder how i'd solve the pathing in terms of when to force ai over a road vs free walk

If a waypoint is within treshold, but is not connected to a endpoint at desired location (within treshold) but still gets the ai closer... should it follow the road..?

Guess i should just play it out and see what fits

Guess regular pathfinding solves it anyways . Probably no need for custom waypoints

Sometimes its best not saying anything 🤣

[mossy nexus]

can't wait until AI psychology and disorders are a thing

we're in a for a ride

[misty wharf]

Hasn't there been a couple instances where they became extremely racist or something, that vaguely feels like an AI mental illness lol

[celest python]

Microsoft's Twitter AI was a nazi lol

[misty gale]

You know what they say

|| Shit in, shit out ||

[ember river]

Rubber duck time
My projectile is set to report noise on hit, however my AI seems to not hear it and to into investigate mode. Le why?

[misty wharf]

I would start by debugging whether the appropriate nodes even run. Does the noise get reported at all? And does the perception update run at all?

[ember river]

Thanks for answering, I'll double check

Negative

I can shoot at his feet and still no response

[misty wharf]

Yeah so check if the report node or the perception event run

since first need to eliminate the possibility that the logic is wrong there

Secondarily, I'm not a 100% sure what "TargetLocation is set" does in the blackboard decorator, since technically speaking a vector is always "set" since it can't be a nullptr

so in theory that could be an issue

[ember river]

It does get called in the projectile on hit which is good

TargetLocation is where the hearing ping is

[misty gale]

Is it a valid location

Is the question ^

If its an invalid hit, fvector would be 0,0,0

[ember river]

I'll double check, gimme sec

[misty gale]

Not sure how a hit could be invalid but who knows

[ember river]

Aye, okay so in the AI controller, I need to find out if the Stimulus Loc is a valid loc?

[misty wharf]

I'd just print it before/after setting to see what value is being put into it

[misty gale]

^

[ember river]

Will do

Gimme sec, and thanks SO much for assisting guys

100% not even getting called

That's in the AI controller

[misty gale]

Check the bullet hit aswell

The hit loc

This part

[ember river]

bullet hit is fine, I have vector

[misty gale]

Ah ok

[ember river]

Indeed

So basically the pawn is not hearing in general then

[misty wharf]

Did you remember to configure the hearing sense?

[ember river]

In controller

In the game.ini?

[misty wharf]

Hearing looks correct, is the detection by affiliation set up how?

[ember river]

This ist he DefaultGame.ini

I was instructed in the tutorial to add the second script for AISense_Sight

[ember river]

Perhaps I need to add the hearing to script in the default game .ini

?

I don't think that's the issue

[misty gale]

I've never done that..

[ember river]

It was from Unreal themselves

But yeah, nor have I haha I thought it was weird

[misty gale]

😅

[ember river]

Anywho, we know it's not sensing it in the AI controller at the very least

[misty gale]

Isnt there a component for the noise stuff?

[ember river]

This is inside the projectile

[misty gale]

Not the reciever but a 'sender'm

[crimson galleon]

Chris has hearing set on the actor and AI

[ember river]

@crimson galleon Come again?

[crimson galleon]

was responding to Squize

[ember river]

Oh

At this point in my prototype, only my player character and this projectile has AIPerceptionStimuliSource component

In my player, it's set to this

In my projectile it's set to this

[crimson galleon]

you followed/watch that one ai tutorial with the drone scanner enemy?

[ember river]

100%

That's the very one!

[crimson galleon]

yeah, i dunno then lol

ive not worked with hearing, just sight

[ember river]

Ayeeee

[crimson galleon]

maybe there are other vids on hearing that can help

[ember river]

I have some experience with hearing, but I don't think it was efficiant. I had a Make Noise running on a tick which worked, but I don't think it was the best

That's the thing, I'd have to cycle through so many vids and just to get to that one tiny moment where my exact problem is touched upon. Some of these vids are hours long

[misty gale]

I have it working on step

[ember river]

I know what you mean and I already searched a bit. Figured I'd ask in here

Nice

[misty gale]

Crouching makes less noise etc

[ember river]

I tried on stepping, that didn't work either haha

[misty gale]

There was something about loudness that was messed up

[ember river]

Actually it did, I didn't have the instigator plugged in. Well walking makes noise and works haha

[misty gale]

😅

[ember river]

okay, some progress, turns out hooking up instigator to the actor instead of self worked...but I don't know if it's the whole bloody actor loc or just the loc of the shot yet

[crimson galleon]

id assume the loc your feeding into the report

do you destroy this projectile after it hits? like after the report?

[ember river]

Yes, that's exactly what I do, insta destroy

Maybe a small delay is needed?

[crimson galleon]

i cant imagine it being the problem, but maybe it existing for a little longer, or perhaps hidden so it still exists makes it work

it sorta makes sense, but shouldnt 😄

[ember river]

Aye, well thanks for rubber ducking @crimson galleon @misty gale @misty wharf

[misty gale]

Wouldnt instigater be whoevever shot the bullet ?

[ember river]

Ideally, but when I do, it does not work

[misty gale]

You had self

[ember river]

I put Self in but when I do, it does not register

[misty gale]

But self is bullet

Not the shooter

[ember river]

Can you explain that but differently

[misty gale]

Shooter is bullets instigator

Or owner

[crimson galleon]

reference the player who shot the bullet...

[ember river]

Aye, but in this instance, I want the AI to investigate where the bullet hit

[misty gale]

Yes

But you wanna tie it

To who shot it

[ember river]

?

[crimson galleon]

that would be the location, but i think instigator is the one who.... instigated it

[misty gale]

Not hardcode player char

When you spawn the bullet

You either plug in an owner or an instigator, or both

[crimson galleon]

might as well try this to even see if it works

[ember river]

Sure, So on bullet spawn, set owner

[misty gale]

Instigator plugin player

[misty gale]

Then get instigator for instigator in noise event

[ember river]

As in, in the projectile, in the noise event, somehow get instigator?

This part, I'm confused

[misty gale]

Ye

[ember river]

?

[misty gale]

Yes

Instigator of bullet is player

😄

[ember river]

So then now I can GetPlayerCharacter in there?

[misty gale]

Noo

No need

Instigator == player

[ember river]

BTW this is working, the AI is moving towards where I shot now

Aye, I guess I ask that because the Target is Self

So that would just be a Self (projectile) is the instigator, not the player

I'm probably just not understanding it right though haha 😛

[misty gale]

And projectile is destroyed

So instigator = null

Instigator of bullet would be the owner/instigator of gun really

[ember river]

So for the record, this is what you mean right?

[misty gale]

Yes

[ember river]

Awesome sauce

Thanks for explaining btw

[misty gale]

Now we're getting the instigator of the bullet, which would be the instogator of the gun, which in your case is the player

It could now be any player.

[ember river]

Indeed, well I call the projectile in the AnimBP on a notify

And the player BP has the player arms and AnimBP

So PlayerBP > SkelMesh > AnimBP > Projectile Shoot > Projectile

?

[misty gale]

Unlike my setup but if it works it works?^^

[ember river]

Hell yeah, it totally works as intended now

[crimson galleon]

so it was PEBKAC all along....

[ember river]

Yes, PEBKAC....

https://tenor.com/view/huh-gif-23918002