blueprint

[onyx token]

absolutely nothing

hang on

https://cdn.discordapp.com/attachments/847253861403197471/940028066934161448/UE4Editor_6iOxCH68mG.mp4

[zealous fog]

Is this the blueprint of your enemy or is it a child class of it

[thorn trellis]

oh god that's right there's a debug feature lol

[onyx token]

it's the blueprint

all i did was an actor for an Npc
and an AI controller

I used to have it linked up to a BT

[main lake]

@onyx token How did you enable that debug menu please ?

[onyx token]

But at this point i've pointed it down to the AI perception being somehow buggy

[onyx token]

^ key

wait

no for you it's different

[main lake]

french ?

[onyx token]

1sec

in your project settings

[zealous fog]

Have you set detection by affiliation?

[dawn gazelle]

I think it the apostrophe?

[zealous fog]

Next to enter

[main lake]

this " ?

[dawn gazelle]

Yeah but just '

[onyx token]

i added an AIPerception component to my Controller
And added the Controller to my enemy actor

Then i added an AIPerceptionStimuliSource to my Player character

[zealous fog]

@JOBY

Oh woops

Caps lock

[onyx token]

https://cdn.discordapp.com/attachments/847253861403197471/940028885318389770/UE4Editor_j4YQC2vDv3.mp4

[thorn trellis]

GET EM DEAN

[onyx token]

[main lake]

Thank you

[thorn trellis]

Sorry at this point I'm just spectating, I tried and failed

[onyx token]

idk what "affiliation" means in this case

you mean registering to be noticed by the AI perception?

I did that

added this to my AI controller

added this to my player

[zealous fog]

In the sight config

detection by affilation

[onyx token]

that was it

i didn't have these 3 set to true

[zealous fog]

yup

[onyx token]

unreal engine

[zealous fog]

Did you read the documentation

[onyx token]

I did, and the tutorial said it, and in my first controller i did do it, but i recreated the controller

[thorn trellis]

@cold pecan your initial screenshot literally has those ena you monster

[zealous fog]

It happens

[onyx token]

it has, that was my first controller

that one is bugged somehow

no idea what's wrong there

so i recreated it

[vital aspen]

Does anyone know how to contact the dev for unreal engine. I don't know what else to do.

[cold pecan]

i’m so confused

[thorn trellis]

Welp, reacreated is as good as fixed then

[onyx token]

thank you so much Dean

[thorn trellis]

hahahaha my b

[onyx token]

u saved me

[zealous fog]

Premium support costs money

https://www.unrealengine.com/en-US/support?sessionInvalidated=true

[cold pecan]

ohhh haha no worries

[trim matrix]

Why you have to contact dev?

[onyx token]

i cant log in

[thorn trellis]

are we not good enough for you @vital aspen

[zealous fog]

All I did was enable you to continue learning BTs, you should not thank me

[vital aspen]

You guys have all ready tried and I'm having too many issues that no one know how to fix.

[onyx token]

now i'm getting the super slow captchas

not my day

[thorn trellis]

like what?

[trim matrix]

I mean there should be no reason you should have to contact a unreal dev.

[vital aspen]

well there is now

[trim matrix]

until you get to the enterprise level, it would most likely just be a waste of there time

You should be able todo anything you want with the engine

and you can fix everything yourself

[onyx token]

i'm fairly sure that some random unreal engine developer is probably not gonna wanna help you at a sunday evening in their free time

just a guess

[trim matrix]

what feature are you having a problem with?

[vital aspen]

that's why I need to contact the devs for UE4.

[thorn trellis]

humor us ice, we're interested in helping

[vital aspen]

@trim matrix If you want too. you can scroll up and look, Lots of message on it. and screen shots too.

[trim matrix]

well good luck. Just know that there is most definitely no reason you should ever have to contact a unreal dev.

[devout latch]

I agree

[vital aspen]

well then you 2 haven't read what I and a few others were chatting about. You just don't know until you read and find out

[trim matrix]

If you want we can hop on a call

sharescreen and vc till we figure it out

[onyx token]

uh

you're having problems with making your inventory

that's not a case of "i need to get a personal teaching session from an unreal engine dev"

[vital aspen]

ok, for those of you want to listen in. I'll be in Unreal hangout

[thorn trellis]

Sometimes when asked to restate what you've had problems with it's not because we don't want to go up and read, it's because sometimes restating the problem can lead to additional info that wasn't present before.

for both parties

[mental trellis]

I know I've often talked about problems and had the solution come to me as I re-look at the situation.

Simply explaining can help you sort it out in your head.

[chilly canopy]

I'm having trouble possessing this actor after spawning it, am I misunderstanding something?

[thorn trellis]

are you calling the respawn from inside the character bp?

[chilly canopy]

Yep, is that not possible?

[thorn trellis]

depends, how far do you get into it?

[clever vapor]

anyone remember why media like a mp4 won't play when it's packaged? editor it works, is it a packaging config thing?

[chilly canopy]

The actor respawns just fine, can't figure out why I can't possess it though

[thorn trellis]

and you've unpossesed the current pawn?

i dont know if that's even a valid question tbh

I possess through GameMode with AIs

so just kinda prodding

[onyx token]

quick question - is there a way to make this more neat? Like an enum selector?

because otherwise i'll have to do this

[vital aspen]

!stream

[onyx token]

switch! That was it, thank you!

[thorn trellis]

there's proabbly already a enum for that byte selector

if not you can make an enum set

[chilly canopy]

Yeah, un possess seems to work fine. I was just trying to be lazy and put everything in BP_Character to quickly test something. I guess I can't be lazy in this case.

[thorn trellis]

once you unpossess it might not see the controller you're trying to assign, don't know what your logic flow is

[chilly canopy]

woops, and now I've crashed Unreal lmao guess I'll take a break for the night

[thorn trellis]

lol

[chilly canopy]

I tried putting the respawn logic in Event Destroyed and it didn't like that

[onyx token]

since noone is asking stuff right now-

How do i play a widget animation above a characters head?
I have added a widget component and filled it with my widget - and the widget has an animation, and has a custom Event that plays the animation

[mental trellis]

Does it show up? Widget components are very fickle.

[onyx token]

looks like this
https://cdn.discordapp.com/attachments/847253861403197471/940043026594689104/UE4Editor_A51RhSgw8F.mp4

yea it shows up

[mental trellis]

But the animation doesn't play?

[onyx token]

yea because i don't know how to link to it

like

the signal comes from the actor

[dawn gazelle]

If you want to play it from the character, then you need to get your animation component, get the widget from that, cast to your widget class, and call to play the animation.

[onyx token]

can i cast to it?

https://cdn.discordapp.com/attachments/847253861403197471/940043355625246780/UE4Editor_hrJyYIdmG2.mp4

because it doesn't show up...

like i can make an object reference

but that doesn't work...

[dawn gazelle]

Eg.

[onyx token]

oooh i gotta do a "get widget" first

[dawn gazelle]

Oh, you have to have a widget component

not just a variable of a widget.

Nvm.. I'm misreading what I'm seeing...

I was looking at that.

I see you have a component.

[onyx token]

ok thank you now it works!

that way i can keep the animation logic inside my widget blueprint

and it's all neat and orderly

[dawn gazelle]

yis

[onyx token]

[maiden wadi]

I still don't understand why there is not a default UComponentUserWidget that could be used in components, that could be given a ComponentOwner property from it's owning actor component. Widget could directly call GetOwningComponent. Which could call GetOwner on that to get the actor. Seriously hate actors referencing widgets directly.

[wicked magnet]

Has anyone come across any tutorials/guides on creating glass that shatters when you walk on it? I've tried using a few settings with the apex plugin to make a destructible glass mesh, which works for shooting with projectiles, but trigger the mesh to destruct by walking on it just causes a big mess.

[maiden wadi]

Line trace down and break it while moving.

[true valve]

Do you have access to a Struct key name?

[maiden wadi]

What do you mean?

[true valve]

I have a struct of name, quantity. They are all text. I want to get the key names such name and quantity. Not only its values. I have a map with the same key names and i want to fetch values from that map using the struct key names.

[maiden wadi]

You mean you want the property's name?

[true valve]

Sure if that's what it called

[maiden wadi]

Like in this struct. Distance is a property name.

[true valve]

yes

I want to get the text "Distance"

[maiden wadi]

You can't really do that. Property names are just for programmer coordination.

[true valve]

What about data-table's text property? Data table has header titles based on a struct

[maiden wadi]

I doubt it. That's not really the way you're meant to use structs.

What is this map? What are you trying to accomplish exactly?

[true valve]

I have a map with the same key names and i want to fetch values from that map using the struct key names. (edited)

https://gyazo.com/fa3ec225b3ce1cb7957680f2bebca2fc

The map has name and integer. If I pass in Name or Rarity, it will pass me the integer. I can manually do that of each but wondering if there's better way

[tame hazel]

Hello, I know I am new and all, but I seriously need some help. I've been tirelessly looking around for a tutorial for a save system using widgets. The closest video I found is this one (https://www.youtube.com/watch?v=C8FNZ6B7bU8&ab_channel=PendingKill), but instead of showing the steps, he just shows the work and only explains about half of the stuff. Plus, his video also feels like it is all over the place. I seriously want to learn how to make a save system almost like the one in the video. If someone has a idea or an answer, please send a DM to me on where to go. Thank you

[maiden wadi]

First off, I'd strongly recommend not converting Text to Name. FText is meant for player facing localized display text. Pretty much it's an end use variable that shouldn't be converted back to others. What is this datatable of? Usually you would use something more like two different maps and get your data using the same row FName you used to look up the datatable row.

[zealous fog]

What do you mean with this?

[maiden wadi]

Basically a UUserWidget that can get the UWidgetComponent that is displaying it. Going to do this myself exactly like I explained. But I'm surprised it's not an engine default. The current setup requires you pass the widget stuff by referencing the widget from the actor. It's terrible design.

[zealous fog]

Is that different from using a Widget Component?

[maiden wadi]

UWidgetComponent is a Widget Component.

[zealous fog]

What would be the advantage over just referencing the component?

[maiden wadi]

UI is meant to display and input. The actor it's a part of shouldn't know or care if it exists. And that's just a programatical point. Also the widget component could softclass the widget class. Which would lower it's memory loading footprint.

Imagine the widget just being able to call GetOwningComponent->GetOwner->CastToWhateverItsSupposedToUse

Zero need to send the actor to the widget on the actor's Beginplay.

[dusk dust]

i have a ring of procedural grids, and I am trying to normalize the vertices to create a part of a sphere

but there is one problem

each grid is normalized on its own, while I want the group of grids to be normalized together, so It can appear to be spherical

basically I want to treat the entire set of grids as one face of a cube, and then normalize that

how can I do that?

[zealous fog]

ah I see makes sense

[odd ember]

I wouldn't think that's possible through blueprint

mesh data is exposed only in the renderer, which is #cpp

[mint lava]

https://docs.unrealengine.com/4.27/en-US/BlueprintAPI/Components/ProceduralMesh/

[dusk dust]

i am using procedural mesh

in bp

i have a procedural grid function that creates vertices and triangles

i can modify any part of the mesh I want

@odd ember

[odd ember]

so why can't you answer your own question then?

[dusk dust]

i dont know how to modify it to get what I want

I dont know what to do

thats why I asked here

[odd ember]

so you want all of your sections to act like one mesh?

[dusk dust]

kind of, I want them to be normalized in world space, im not sure if thats the right term to use

[odd ember]

I'd probably ask in #graphics given there are people who do render math there

[dusk dust]

ah okay thanks

[elfin inlet]

hello hope not interrupting, how can i refer to this delegate on another node graph?

[odd ember]

that's not a delegate, it's an event. you need to create an event dispatcher

and then bind that event to said event dispatcher

[elfin inlet]

this might work too

but its gonna be a mess for multiplayer

[odd ember]

I don't know what you're doing

so I can't tell you more

[obsidian topaz]

Hey Guys, I have a capture component in an item blueprint, and it works almost fine...the render target is correctly shown in the widget. It only renders the specific item I want to render. However, I can see the atmosphere in the background, including my world lighting. Is there a way to switch that off, so that I have a complete dark background where the item is shown? I would rather like to use my Spotlight...

[elfin inlet]

i want to initialize a custom tick (for resource regeneration tick)

i want to do it on beginplay but my resource system has its own graph

[odd ember]

doesn't the capture component allow for different kinds of rendering options?

[odd ember]

what is your resource system?

[obsidian topaz]

I have played around with the options, render mode doesnt change anything. Tried the max view distance. Also not helping... 😦 So i am a bit lost in that regards. Which option did you have specifically in mind ?

[elfin inlet]

@odd ember this will prbably do fine

[odd ember]

I mean there are some render options that allow you to pick and choose, but to be honest if you're looking for a specific light only, you'll have to turn that on manually

[iron bone]

what do I plug into the object slot if I'm trying to cast to my FirstPersonProjectile from level blueprint? Thanks

[odd ember]

whatever you're trying to cast

[onyx token]

for the first time in my life - i have made non-spaghetti blueprint code and i feel...

pure

[astral ice]

hey guys, quick question, is there anything wrong with doing this?

[iron bone]

I'm trying to cast to a Post Process volume that's in a level after hitting something with a projectile. Trying event dispatchers but the only place I can reference the post process volume is in level blueprint and can't call events from my projectile in there

[odd ember]

what would you think would be wrong?

[onyx token]

if it works, seems neat to me

[odd ember]

well you need a projectile to cast

it would seem

[astral ice]

multiple targets instead of an array with a for each loop
seems weird to me but it does works fine

[iron bone]

but I can't cast to my level blueprint

[odd ember]

it's fine, BP allows for this

[astral ice]

thank you! makes sense

[odd ember]

it's really difficult to understand what you're trying to do without you showing code

[iron bone]

my code is not really set up yet, it's just the basic first person template. I want to shoot an object and on event hit have it change a setting in the post process I've set up in my level

[odd ember]

have you checked that the post process volume actually has collision settings to support this? event hit implies it is solid

[iron bone]

I'm trying to hit a different object other than the post process

I want to cast to the PP

I want to shoot a different object other than the PostProcess volume

[odd ember]

this sounds all kinds of bad

is this something you're intending for the player?

[iron bone]

yes

what would you recommend?

[odd ember]

camera components have post process settings

[iron bone]

the basics is, player shoots something they werent supposed to shoot and the screen changes via pp

[elfin inlet]

i agree with the camera post process

you can access its variables from the camera object

[iron bone]

i see

i set up a post process volume in the level so was hoping i wouldnt have to recreate it in the player camera

[elfin inlet]

well i guess that works too

[odd ember]

the problem is that you have to setup complex logic to make it work for a volume in the level

because the post processing volume has no idea about the logic that is going on between the projectile and whatever it hits

[iron bone]

that's why I was thinking an event dispatcher would help

[odd ember]

so for every projectile you'd have to bind that projectile to an event dispatcher that then links to an event that changes the post process volume

and when the projectile dies, you'd have to unbind it

it would be much easier and more elegant to do it on the camera component

[iron bone]

how can i reference the post process in my projectile bp though?

[odd ember]

also future proofs your work

[iron bone]

i see

[odd ember]

you can't

you're dealing with indirection

the projectile is not supposed to know about anything, including the post process volume

all the projectile is doing is calling the dispatcher when it has hit

[iron bone]

but the event dispatcher is useless to me because the projectile can't communicate with the post process volume i've placed in the level?

for this situation

[odd ember]

no

it's not useless

you're misunderstanding how event dispatchers work

[iron bone]

are you saying i should recreate this pp in the character camera and then from the projectile bind an event to cast to the player camera and change the pp there?

[odd ember]

anyway you probably need 2 levels of event dispatchers

one for whomever fires the projectile, and then the projectiles themselves

and if you can have more than one projectile at a time it gets hairy

[iron bone]

i appreciate the help

going to try to recreate this post process in the player camera and then go from there

[maiden wadi]

Well that was easier than expected. 😄 Made that widget component in a plugin. Used a SoftClass for specifying the widget. Nearly zero memory sizemap for the actor that has the widget component, and the UserWidget class can get the component that spawns it.

Happy with that memory sizemap. 😄

[elfin inlet]

how do you access that

[dark crow]

Right click -> Size Map

[elfin inlet]

thanks!

[maiden wadi]

Also make sure to check the differences between Disk and Memory.

[dark crow]

There's then Memory Size and Disk Size

Ye

[elfin inlet]

maybe i should not have a player hard reference in my hud 😄

[maiden wadi]

Having the player class referenced is fine. It's always loaded.

[dusk ember]

so i'm trying to make a text block visible from another widget blueprint (via a checkbox), but i'm not sure what object i'm supposed to use in the cast block. can anyone help with this?

[elfin inlet]

these widgets need to know about each other

[maiden wadi]

Blue variables like that are memory pointers. They point to the location that the object resides in your RAM. Casting just changes a pointers type, not the location it points to. You need a pointer that points to that object, not necessarily a cast.

[dark crow]

If it's always loaded and present in the world, don't worry about it

[elfin inlet]

in the blueprint which you contstruct these widgets, you can have a reference to the other one and set it for later usage

[dark crow]

Example would be a Sky too, it's always there :p

[elfin inlet]

i dont know how i can explain this 😄

[dusk ember]

so the one that makes that is within a 3rd blueprint

[elfin inlet]

for example like this one

but you'd have a reference to the Game UI widget in your case

you have to declare it as a variable in your checkbox widget first though

[dark crow]

If they're present in a common Widget you could always use a dispatcher too

[warm light]

Hey all, super new to Unreal 5. Trying to get my pawn to start a behavior tree. Keep getting this error on compile. Pawn Controller Class set to AIController.

[maiden wadi]

Usually you do things like this through delegates. Whatever has the checkbox should have a delegate on it that gets called when the checkbox changes.

[elfin inlet]

you should plug a reference to the controller to target pin

[maiden wadi]

Thing making the thing with the checkbox can bind to that delegate and use it on the other widget when it's called.

[elfin inlet]

should be the node called something like get pawn controller

[dusk ember]

i'm kinda lost ngl

[maiden wadi]

First question. Why is the checkbox in another widget if it needs to hide the other one's text?

[elfin inlet]

@warm light i think this should do it

[dusk ember]

because when the options menu is closed it doesn't show the text box

[maiden wadi]

The Checkbox is an options setting?

[warm light]

Trying now, you're the bomb

[dusk ember]

yes

basically i'm just trying to have an FPS display that can be enabled/disabled in the settings

[tulip mason]

Settings should have a reference to that widget somehow

[maiden wadi]

This is normally handled by setting an options setting that you can look up and then calling a delegate from that options object. The other thing that should be affected by it can get that object and bind that delegate and change itself based on that option setting.

Options widget itself should be throw awayable. Should not be relied upon for the state of options.

[elfin inlet]

i've read that you should avoid storing data in widgets generally

data which affects gameplay / systems

well for obvious reasons, they're meant for UI 😄

[maiden wadi]

Widgets display data from other things, and allow input into other things. The only state they should store is their own for things like animations.

[dusk ember]

i guess the problem i'm having is that the options reference is in the player's blueprint

[warm light]

@gkt Thank you so much for the help, but my pain continues. Any idea where I went wrong? Adding the target didn't stop the original error.

[elfin inlet]

execute the cast first

[tranquil abyss]

So I made a UI widget that displays the name of the item when the player stands over it, The issue is every item in the class is displaying the name of the item im standing over. Any clever idea on how to just display over the item im standing over

[elfin inlet]

@warm light should be like that, the execution

[warm light]

It worked! You're the best

❤️

Someone give this guy a medal

[elfin inlet]

cheers!

[tranquil abyss]

Here is an image of how im getting the name of the item in the widget, I dont think i need to show this for this issue be a change it helps

Sorry for the picture spam but the context is necessary

[elfin inlet]

probably this is what is happening:

all of your weapon blueprints are listening to the character overlap simultaneously and when you overlap one, all of their graphs check out and display the current overlapped weapon's name

you can add a check on the weapons if the overlapped actor is self

right here should do it

[maiden wadi]

The issue is the binding checking the bool.

[dusk ember]

i'm still confused by what a delegate is tbh

[maiden wadi]

Event Dispatcher is the blueprint friendly name for it.

[elfin inlet]

who am i to judge, but i think that system is not very optimal 😄

your player should notify the overlapped actors to display their labels

[tranquil abyss]

I dont that is it, I was just using a place holder name before I added the logic to get the correct name of the item, Here is what I added but I still get the same results

wait

[warm light]

@GKT No more errors anymore, but for some reason my Get Location blueprint wont finish executing. No compiling errors or missing finish executes. Any ideas?

[maiden wadi]

^

[elfin inlet]

he's right too

all of these actors are listening to a single bool

[maiden wadi]

Anything overlaps. They all get set to true.

[elfin inlet]

you can put the overlap bool on the weapons

and the widget will listen to the parent's bool

[tranquil abyss]

🤔

so check if the overlap is happening in the parent sword

with a bool

and only display to that one

[maiden wadi]

Personally, I would ditch the binding, ditch the upkeep. PlayerCharacter's OnOverlap and EndOverlap can just make the things show and hide their widgets.

[warm light]

My embarrassingly simple get movement tree for reference

[elfin inlet]

yeah that's a hell of a binding

[maiden wadi]

It's just a bool check. But it's not necessary.

You could do the same thing in the items too. Make them listen for player overlap. On Begin and On End overlap, set the visibility to whether the local player is overlapping it.

[tranquil abyss]

So if the weapon is being overlapped set widget to true

in simple terms

overlapped by a player

[elfin inlet]

yes but the widget should check an instanced variable on the sword

all of your swords are checking if the char is overlapping ANY sword

[tranquil abyss]

This is the only part that is in the sword

the rest of it was in the widget

to be clear

[maiden wadi]

No more unnecessary variables. There are already two that handle visibility on the component. Just set it's HiddenInGame true or false.

[elfin inlet]

this is the problem 😄

[tranquil abyss]

😂

im learning

im just surprised I make anything that remotely works

atm

It does make more sense for the actor to make its instance of the widget visible lol

[elfin inlet]

• Every sword in the level is checking the "Overlap Weapon Name" in your character
• When an overlap happens, the sword modify the bool in your character
• Other swords check that bool too, so all of them think they're being overlapped and they should show the text

[tranquil abyss]

🧠

[maiden wadi]

No more booleans.

[elfin inlet]

@maiden wadi you wanna see some triggering imagery about booleans?

[maiden wadi]

Those look like function names to me. 😄

[elfin inlet]

its called the spaghet naming convention

[tulip mason]

Can Regen health.... Should Regen health....... What about could Regen health......

[maiden wadi]

I don't really use variables that much. Functions are easier to maintain. They return the current state of things at certain times. Variables require upkeep and babysitting. Should only be used when explicitly necessary.

[elfin inlet]

how would you go about converting this to function based instead of state based

this is a mess

i guess this is the babysitting you were talking about

[tulip mason]

Well at that point you could create an enum and a structure where for the type of stat you want, you update the structure max value based on a function.

Although that gets more complex I guess

[maiden wadi]

There's no need to have those. Let the regen function run as much as it wants. Doesn't matter if it keeps setting health to 100%

[elfin inlet]

the proper way is probably using GAS but thats too advanced for me right now, a lot of boilerplate needed in unknown territory for me

[elfin inlet]

how am i gonna clamp them?

[maiden wadi]

With a clamp.

[elfin inlet]

😮

omegalul 2 iq

great refactoring 😄

i think i can ditch some bools too now

[maiden wadi]

I'd recommend some setters for your resources. Just call those whenever your add or lose health.

[elfin inlet]

i have this

general purpose func

[maiden wadi]

I meant for setting them. Health for instance. Sets and clamps at the same time and allows room to check for death. Simply happens any time you modify health through that function.

[elfin inlet]

oh so i should move the checks into setters

should i make them events for ease of future multiplayer replication

[maiden wadi]

Probably no need on the events. Health would be a replicated state. Clients can do things when that replicates to them.

[elfin inlet]

i just realized i already have getter and setter but they're generalized

the problem is for example add stamina with a negative value should probably have a callback if its failing

ugh i need sleep 😄

[elfin inlet]

you also touched a good point here, i should use the actor's tick and multiply with dT so i can have consistent regen rates with unit per second.....

[gaunt ferry]

may be a stupid question but is it possible to get raw data from a site with default engine blueprints

[dawn gazelle]

No

[gaunt ferry]

dang thx tho

[elfin inlet]

wow, much better but theres still room to improve

[gloomy cypress]

can I ask for help with the console command HighResShot here?

I can't seem to get this damn command to do anything lol

[remote meteor]

Is there a way to stop Play World Camera Shake that is already playing halfway? or atleast to exclude certain camera to not affect by it?

[faint pasture]

Bit of a design/preference question. I'm working on a drivetrain plugin. Would you expect a positive rotation rate on a tire to be clockwise or forward? That is, would you expect both left and right tires to have positive rotation rates when a vehicle is moving forwards or right side positive, left side negative?

It's just a sign convention, the math works out either way. Just curious what you guys would expect or prefer.

[velvet dagger]

Omfg when I try to do the Vinterp thing for a bullet I can either get it to stay in place from where it shot from or teleport to the position I want it to go, any help??? :(((((((((

[tawdry surge]

Show your work

[gloomy cypress]

oh my god

highresshot doesn't capture slate widgets at all does it...

[velvet dagger]

eee, a little embarrassed to show lol

I don't get it

Oh yeah yeah

I was using relative location atm to see if that'd work too

Idek what it does lmao

[tawdry surge]

I'm not sure what it's doing either..
Why are you delaying twice?
And you realize delta time is 0

https://m.youtube.com/watch?v=--6HvirxmUA

Also you wanna use world space

[velvet dagger]

Idek what it did haha, but I did try changing it, still didn't do what I hoped for, and, the delay thing was set at 0 so that every tick it'd change the location, I've already used the on tick event in a different graph and I didn't feel like moving all of this stuff there lolll

Thank you btw, I'll check out this video :)

[faint pasture]

Why are you vinterping a projectile?

[tawdry surge]

Haha.. That seems to be the least of the issues

[velvet dagger]

Dunno, someone told me to

Oh oh and like

I want the projectile to go towards where a ray hits so yeah

[harsh coral]

What's the difference between the lerp (vector) and the Vinterp to?

[tawdry surge]

Lerp chooses a spot between A and B based on a float.
Interp smoothly moves value A to value B, at the speed you choose.

Lerp and a timeline with a float track will give way more control

[harsh coral]

thanks

[elfin inlet]

day 10 of wondering how this heap of garbage works :):):):)))))))

[verbal current]

is there a node/function/something to draw a copy of an actor?

For example when I select something, I want to attach an "image" of that actor to the cursor. How to draw that image is what i'm unsure how to do.

[remote meteor]

look into Posable Mesh Component or Copy Pose From Mesh node in ABP Anim Graph

[verbal current]

Thanks! I'll start looking into that. Just needed some direction.

[elfin inlet]

is it possible to line trace from center of the camera frustum?

[pastel rivet]

is it possible to move call in editor functions to be under a category?

and not the default one

[tight schooner]

Yeah you just give it a category

It should be in the function details rollout

@pastel rivet

@elfin inlet can't you just get a reference to the camera and then Get Forward Vector?

And with the camera location & forward vector you should be able to make the start & end points for a trace

[elfin inlet]

my camera is attached to the character's head socket

[tight schooner]

Whatever BP is doing the trace needs a reference to the camera, or otherwise some way to get the camera's location/rotation

[elfin inlet]

the problem is camera's object in the world is jiggling around

the forward vector is not aiming at the center of the frustum

maybe i can use the controller's forward vector

[tight schooner]

I don't follow. Like how could the camera frustum not be wholly represented by the camera. But sure you can get a location and forward vector for any actor or scene component in the world and make start & end points for a trace

You know better than me what you have in mind

Start of trace = location

End of trace = location + (forward vector × desired length)

[elfin inlet]

very weird, its working now

this works

[pastel rivet]

@tight schooner
Where

[winged grail]

Hello guys i need help with my spawn system ehm i want the system to use an random actor but i cant find a solution for it. How can i add more actors and let the spawnpoint choose a random one for spwaning?

[elfin inlet]

make an array of classes

right click class pin and promote to variable

then change it into an array

[winged grail]

should i do the same with the ai controller class?

[elfin inlet]

then add the possible classes to spawn

are these controllers for different behaviour

[winged grail]

yeah

[elfin inlet]

then pull a random one with get + random integer in range node

[winged grail]

i get an error

[elfin inlet]

this will select a random one

[elfin inlet]

then add the possible classes here

[winged grail]

well everything worked but i didnt understand that with the ai controller

[elfin inlet]

is it working

[winged grail]

i try to make it work :/

[jolly island]

Hello, I need to be able to move the players camera while the game is paused. If I pause the game, the camera doesn't move and if I use time dilation instead the camera moves but there's a weird warping effect to the characters and everything is very blurry. Any solutions?

[winged grail]

yes its working 😄 and how can i do that with the ai controller?

[elfin inlet]

add the same to the ai controller 😄

make another array for the controller classes

the rest is same

[tranquil birch]

hiiiii

[chrome nymph]

I'm trying to create orbs that float around a position

discovered SpringArms - but not sure how to get them to work.

is the orb not supposed to be a parent of the springarm?

[onyx token]

afaik spring arms are made for camera stuff, you should probably just use an empty mesh or scene component or something and parent your orb to it - and rotate the empty.

---

Question:
So i have made a chest, with an inventory that i can use.

But now i'm making enemies, and i feel like enemies could use an inventory too...

How can i convert a bunch of code into a reusable component?

Can i just read the documentation on it? Are there neat tutorials on custom components?

[faint pasture]

Just make the component.

[onyx token]

but i already have the code

[faint pasture]

InventoryComponent is a very good project

[onyx token]

i didn't plan ahead

[faint pasture]

move the code into an InventoryComponent

[onyx token]

oh lol

[faint pasture]

InventoryComponent would have variables representing what it's storing and functions and events to get its contents, give an item, drop an item, swap items to another inventory component etc

If you're totally new to components maybe try making a HealthComponent first but InventoryComponent is a very good project.

You should make the component in such a way that the player character, chests, shops, enemies, anything else would use the same component

[onyx token]

yeah i'm slowly beginning to understand why stuff is the way it is

[faint pasture]

that's the whole point of components. Put all the inventory stuff in it then just slap it on an actor to give them an inventory

There are tutorials around but I'd just try to do it yourself. It's not that hard and you'll learn a lot.

[onyx token]

yea i made an inventory on my player that does work, and then i made another one for a chest

but now with enemies? I feel like it's getting silly

[odd ember]

that's why you generally want to create one inventory that fits everything

[onyx token]

yeeah that does indeed sound like a reasonable thing to do now lol

[odd ember]

one of the main principles of code is "don't repeat yourself"

[tidal marlin]

Hello. How can I track that my EQS system did not output a single successful optioт?

[tight schooner]

try function and not event

[earnest tangle]

You can get a count of how many it returned

[odd ember]

probably better asked in #ue4-general. sounds like some sort of migration issue

maybe #source-control can help too if you use that

[ruby flare]

Thanks, have cross-posted to both channels, hope that's not too frowned upon here

[odd ember]

it is. you're generally expected to delete before reposting

[ruby flare]

Ok, my bad, thank you

Will try #source-control first in case it's a git or git-lfs issue. Suspect the crowd there may be more familiar with migration issues in general too 🙂

[onyx token]

um why is it
when i shoot a line trace at a character actor
and i try to print the name

it comes empty?

[odd ember]

the line trace doesn't hit?

[onyx token]

it does hit, but the string is empty

[odd ember]

then it doesn't hit

[onyx token]

but when i shoot another string every like second it gets pushed down instantly

see?
https://cdn.discordapp.com/attachments/847253861403197471/940214977871085638/UE4Editor_y8R4WOxutn.mp4

i did it with a brand new actor just created - same result

[odd ember]

yeah so you're not hitting anything but you're running the trace on tick or some such

[onyx token]

ok hang on i'll make a completely new character

i don't get why

[odd ember]

not hitting collisions? you can put a branch to only print if it hits anything

[onyx token]

hmmmm

that could actually be it, hang on

oh that was it, ur a genius!

thank you so much! @odd ember

[west whale]

anyone know why this is happening? ball bouncing off platform most of the time, it works as intended on the first try, then when i make it to the 2nd platform (same bp actor) it applies extreme force

[wheat cipher]

Hi, everyone! Does anybody here know about a good tutorial that goes over the creation of character controllers from scratch using blueprints? It seems like every single tutorial starts off with that template. I don't want that. I want to try to build it from scratch so I can control it the way I want. I have no idea how daunting a task that will be, but I want to try, but I need somewhere to start. Some tutorial or series that goes through all the essential components of a third person character controller.

[spark steppe]

most of the movement is handled by the character movement component anyways

so player controllers can get away being pretty simple

[odd ember]

what's your experience level with game engines?

[chrome nymph]

hi all, trying to build floating orbs that rotate around other actors.

not sure how do i get the SpringArm to behave correctly

am i supposed to set the location of the spring arm to be away from the orb at the start?

[odd ember]

the springarm doesn't do what you think it does

[chrome nymph]

this is with scene, spring, sphere and point all at 0,0,0

[spark steppe]

shouldn't be necessary to change the world location

[chrome nymph]

https://forums.unrealengine.com/t/a-way-to-have-objects-orbit-around-another-actor/406086

[spark steppe]

the rotation should work, tho

[chrome nymph]

was trying to follow the thread here

what happens instead is

[odd ember]

just make a pivot point to rotate around and have it be the parent of both spheres

done

[chrome nymph]

springarms have nice collision behaviours

[spark steppe]

the spring arm does that, tho

[wheat cipher]

@odd ember Not particularly high. I'm pretty comfortable with blueprinting to some extent in Unreal, and I'd like to learn more. I work with animation, so that's where I have the most experience.

[chrome nymph]

and also has the ability to move to the place with Lag

[spark steppe]

are the orbs supposed to be own entities, or are they child actors on the character?

[chrome nymph]

the interestign thing is - if i apply a relative transform to the springarm in the blueprint editor, it seems to work

[chrome nymph]

own entities - i hope to make them pick-upable

[odd ember]

I'd stick with the templates then 🙂

[chrome nymph]

wanting to submit a level for my uni module where
i haev a box with a npc running around - if he walks into an orb it starts to orbit around him without colliding with other orbs

[wheat cipher]

@odd ember But can you modify that into anything you want, or do you just end up working around the limits of the template?

[spark steppe]

if you attach the orbs to the character you get around updating their world location each tick

however, i'm not sure why your orb won't rotate, it should

[chrome nymph]

how do i attach the orb to the character if the orb can be picked up?

[chrome nymph]

yeah thats the thing 😦 it works fine in the blueprint editor

[odd ember]

you can modify it however you want. the template is just a start. nothing is removed

[spark steppe]

in your orb BP the orb isn't on 0,0,0 but the root of the spring arm is, right?

[spark steppe]

AttachActorToActor or AttachActorToComponent

[chrome nymph]

they are all 0,0,0 location and transform

[spark steppe]

the orb shouldn't be at 0,0,0 tho

only the root of the spring arm should be

[twilit gull]

do custom collision objects work?
cus i'm missing one hidden checkbox or they dont work for me

[chrome nymph]

oh wow thats a lot more efficient than updating on tick

[spark steppe]

pretty much the same cpu load i guess, but it's the cleaner solution imho

[chrome nymph]

if thats the case do i still need a root scene object? or can the spring arm be the root itself

[spark steppe]

spring arm can be root

[chrome nymph]

if spring arm is root, then it remains at 0,0,0 or

[spark steppe]

yes, but the orb shouldn't be at 0,0,0

it needs some offset, so that you notice any rotation

[chrome nymph]

do you mean the orb instance?

[spark steppe]

the orb sphere/light

[chrome nymph]

oh the Sphere itself?

[spark steppe]

the sphere actually

is it attached to the correct spring arm socket?

[chrome nymph]

is there a socket setting somewhere?

[wheat cipher]

@odd ember I see. Might be worth giving it a chance, at least as a starting point 🙂

[chrome nymph]

parent socket cant be anything other than None

because spring arm is now root

[spark steppe]

yes, but what socket is in the details of the sphere?

[chrome nymph]

oh this setting on the blueprint editor > sphere?

it was none - changed it to springendpoint

still doesnt rotate though.

[spark steppe]

the spring arm has a length defined?

[chrome nymph]

changing it to AddActorWorldRotation (since spring arm is now root) also doesnt work

[chrome nymph]

yes, 300

[chrome nymph]

neither does AddActorLocalRotation

[spark steppe]

try with unchecked "inherit yaw/pitch/roll"

[chrome nymph]

doesnt work either

[light fractal]

Can i see the component list/hierarchy? I've had problems with transforms before when there's not a simple scene component as a root.

idk why that happens but there's a chance I might be able to help you here

[chrome nymph]

do you mean this?

[light fractal]

Yes

thx

[spark steppe]

yea valid point, removing the scene may also removed the rotation from the transform

[light fractal]

ye

[light fractal]

I'd try making a scene component and parenting the springarm to it

[chrome nymph]

when i changed location rule to keep relative - the orb moves to right location
edit: doesn't seem to be keepign to 300 away

but its not rotating.

[light fractal]

yeah that's really weird

Try the thingy I mentioned though, it might just work

[chrome nymph]

hmm, ill try creating a new blueprint from scratch

maybe some old settings mightve affected

[light fractal]

Don't delete your current version though in case that doesn't work

I've made that mistake before lol

[chrome nymph]

complete default settings

hmm. i must be misunderstanding something

if i use a RotatingMovement instead

it behaves a lot better

is AddActorWorldRotation the incorrect method?

ah yes it is

lol - the sprignarm was attached to the anchor already so local is correct

not world

[spark steppe]

depends, 10 degree is just pretty large

[chrome nymph]

anyway - it seems to work now.

maybe some lingering settigns was messing with it

trick was to just create a new one 😛

btw - what exactly does the movement components here move

does it move the entire actor?

are there component-movement components we can attach?

[chrome nymph]

is there a way to attach the orb to the actor such that it will gradually move there - or do i need to create a timer that gradually transforms its local offset to the parent until it hits a threshold, then removes the timer?

[spark steppe]

probably later, i'm not aware of any build in function of that

[chrome nymph]

yikes

heh

wouldve imagined that to be a common use case

[odd ember]

gradually how?

[chrome nymph]

but simple anyway

[spark steppe]

maybe attach it to the actor and keep the world location, and in the same process start to move it towards 0,0,0

[odd ember]

because you're straddling a use case between implementing AI movement or using projectile movement at the moment

[chrome nymph]

wait

can i use AI movement to handle this?

make the orbs smart in wanting to rotate around its parent

[odd ember]

probably overkill if they are just supposed to rotate

but seeing as you're using spring arms, there are some tickboxes for "lag" you could try

[chrome nymph]

aside: is there a way to create timers that reference functions that dont take a string? e.g. a list of funcs to call

feels weird to call funcs by strings - but unsure if this is a common thing in C++

[thin panther]

You can do create timer by event where you can link a custom event

[odd ember]

it's called reflection, you usually want to avoid it

[maiden wadi]

Using function name is a possibility, but it's slower than a direct delegate binding.

[odd ember]

create timer by function and then use the CreateEvent node is the best way

avoids any use of strings, but retains same functionality

[chrome nymph]

gotcha.

is there a way to hook into EventTick from a function

without having to call the func from event tick?

e.g. a NotificationCenter i can listen to

[maiden wadi]

Why?

[chrome nymph]

i might be mistaken - but timers are not necessarily accurate since the tick between frames depends on the load

so if the movement of other objects are dependent on event tick - then the speed via Set Timer > AddLocalOffset might be different.

(over engineering in blueprints, lol but curious)

[maiden wadi]

Timers are just a timer manager that runs on tick itself.

[chrome nymph]

EventTick exposes delta seconds but if i want to access that i have to call a func

[maiden wadi]

Doing things at near tick rate with timers is not a good idea.

[chrome nymph]

is there an "Apply force" function?

e.g. - instead of manually setting add local offset, i tell it to move

eg via velocity

[maiden wadi]

For simulating physics objects.

[chrome nymph]

ah

[maiden wadi]

For other things you'd probably use a projectile movement component. Not sure if it has force functions, but it shouldn't be too difficult to math the velocity change.

[odd ember]

timers run independently from tick, but will always sync with tick for updates

[chrome nymph]

i see

probably best to just KISS and rely on Timer > AddLocalOffset then

[maiden wadi]

Why a timer though?

[chrome nymph]

use case:
Orb gets picked up, then moves above target and orbits around.

attach to anchor merely registers it as a child component but doesnt have a way to gradually move to ideal offset

[maiden wadi]

But you're using a timer for moving the object, or?

[chrome nymph]

thats the plan

i mean ideally i would rely on SpringArm's length to do it but

not sure why SpringArm doesnt move it into position

it just keeps its origin

[maiden wadi]

I still strongly recommend not using a timer for this. Timers are not meant to be used for near tick rates.

[chrome nymph]

a nasty side effect of relying on EventTick in this scenario would be that it has to constantly check if it should move towards the ideal local offset

[odd ember]

this just seems massively overengineered

[chrome nymph]

even if it has already moved

[chrome nymph]

lol yes it is, but this thought process is enjoyable so why not 😛

[odd ember]

because it teaches you bad habits

[chrome nymph]

hence why i was asking if there was a way i can access EventTick from a notification service instead

[maiden wadi]

Like. I'm lazy. I'd just stick some scene component on the end of the spring arm, and put a projectile movement component with a homing target if I just needed something quick. Realistically this is Niagara territory if you're looking for performance though.

[odd ember]

ideally for a moving orb you can use something like a timeline that loops. you keep the XY location of your character as the pivot for your orb... and that's it

that's all you need

[chrome nymph]

oh wow i didn't know that was a possibility haha

i havent gone beyond playing with geometry yet

[chrome nymph]

what would you use instead?

of the component - assuming we are staying in code / blueprints

[maiden wadi]

Just make the thing tick itself. Give it a target owner. If has not reached target owner, interpolate towards target owner. If has reached target owner, start rotating around a local point on target owner.

[chrome nymph]

might that be more inefficient since it has to run an if check every tick?

whereas if we used a timer - we can deregister the callback after its done

[maiden wadi]

But it's never done.

[odd ember]

also forget about inefficiency right now

make it work first

[maiden wadi]

It still has to rotate around the owner. Doesn't matter if it's the owner rotating spring arms, or the object itself rotating around the owner. Something is ticking and moving components somewhere.

[chrome nymph]

actually that's true

[maiden wadi]

The reason why timers are bad at near tick rates, is because sometimes you're running the same code twice in a frame. It's a pointless upkeep that at best has no discernable performance gain. At worst, causes you to run code twice in a frame sometimes.

A case example is that if you set a timer to run 0.0166 seconds, which is 60FPS, but your user is running at 30 FPS. They're running that timer two times every frame.

[chrome nymph]

so its the safest path to just rely on event tick instead

[maiden wadi]

If it needs to move smoothly each frame, and it's constant and never stops, sure.

[chrome nymph]

gotcha, thank you so much for entertaining me

learnt a lot here 🙂

[chrome nymph]

lol yeah this is important too i have 2 hours left welp

[chrome nymph]

thanks for pointing out again that someone else still has to check regardless 🙂

[maiden wadi]

General note. Don't be afraid of tick. Or casting. Once you know how to use them, they're not nearly the monsters that guides and youtube will have you believe.

[onyx token]

is there a "is null" check?

like i have an "IsValid?"

But if the variable doesn't exist

i get an error

[maiden wadi]

Which is the error?

You're nullchecking the component, but not the LastViewedObject

[onyx token]

sure, but if the LastViewedObject is null, wouldn't it mean the component is null too?

[maiden wadi]

Yeah, but you're still accessing the pointer of LastViewedObject to try to get the component.

[onyx token]

oooh

ok that makes sense... thanks!

[fiery swallow]

you mean setting a timer for "get world delta seconds" is a bad thing?

[chrome nymph]

derp question

why does this not work >_< - trying to move the orbs to the location

trying out VInterp To instead of manually calculating the diff

subtracting the vectors and using AddRelativeLocation works.

[feral ice]

Is it possible to shoot down a linetrace at an object that has a texture, and get the color of the texture. For example where the dot is, I can get exactly what color that is. Is this possible?

[chrome nymph]

hmm - it works well if i use SetActorLocation

why is that?

(the orbs were initially unattached, then became attached, so its relative position was not at the ideal initially)

attach to anchor was set to keep relative

[timber knoll]

Interp is over time

so you would need a constant delta time input for it to work

[chrome nymph]

yup - that part works

the strange thing is, why do i use SetActorLocation instead of SetActorRelativeLocation?

[timber knoll]

relative is relative to parent space

while the rest of your calculations are in world space

[chrome nymph]

oh im a derp

yeah

whoops

[maiden wadi]

Also a problem for travel in seamless. Timers can still run from the persistent world in an object like a widget if it's been removed from screen. Widget Tick doesn't. 😄

[fossil skiff]

how do i make an ai go around the player using blueprints

like the arkham games

[icy dragon]

It's as simple as an AI Move To, but on it's own, the AI would still look braindead.

[fossil skiff]

i dont get it

[gentle urchin]

Most AI behave braindead 😅

[icy dragon]

Literally a node called AI Move To

[fossil skiff]

and connect the location to where?

[icy dragon]

At least developers putting more effort on stuff like sorting priorities can make the AI more palatable to play with/against.

Except turn based RPG where all the AI would do is roll a dice.

[icy dragon]

Where you want your AI go to.
I dunno, maybe trying to go into his home, or go to his office in shortest path possible.

[fossil skiff]

lol

[true valve]

Is there a pagination function to help load a large data table? If not what are my options ?

[spark steppe]

make your own

[maiden wadi]

What is a large datatable in this context?

[spark steppe]

a smol one^

[chrome nymph]

heh even using a homing projectile the floating orbs arent that easy to build

_<

i must be doing something incorrect though

the SpringArm isn't behaving the way how it should

[spark steppe]

@maiden wadi #cpp message

[chrome nymph]

or at least i must be misunderstanding something.
if we set its length to be X - it should try to maintain that length, but, if you have an actor that is a spring arm that is later attached to another actor - it doesnt seem to do that?

[maiden wadi]

I remember that conversation. 😄 That was ridiculous.

[spark steppe]

so i guess you also thought about it when reading that question 😄

[maiden wadi]

Actually I was wondering why you'd need to care about it. You don't really load datatables often. You kinda just let them chill in memory as static data. They shouldn't be that huge.

[spark steppe]

guess most of the loading problems come from hard referencing objects

so what are you doing @true valve

[gentle urchin]

Priceless 32gb

Sounds like something that should exist elsewere and queried when needed

Then you can go as big as you like i guess

[spark steppe]

like a database that was designed for that amount of data 😄

[gentle urchin]

I was thinking floppy disks, but sure

Database works fine 😄

[maiden wadi]

Yeah, but they were using it for storing basically predefined linetraces. Like.. While you're at it, just compute the reason for the universe. 🤷‍♂️

[gentle urchin]

Static linetraces

[muted ember]

Yo everyone, I would like to know how we do so that when I press a button that displays a widget and then I press another button that displays a widget and well that the displayed widget deletes it to be able to leave the other appear. Excuse me if it's not very clear

[gentle urchin]

What help are they..?

[spark steppe]

something for spawning stuff iirc

[icy dragon]

Use an input event for that button, create widget and add to player screen.

[spark steppe]

they aren't of any help as a computed line trace would be faster than a query on 32gb data

[icy dragon]

I'm away from my computer so someone might able to visualise the BP

[chrome nymph]

is anyone familair with using springarms on components that get attached later?

[gentle urchin]

Exactly :p

Also, why trace at all? Isnt it faster/smaller dataset to access the raw data instead. ...

[spark steppe]

they had no idea what they where doing, otherwise the question about the 32GB data table would have never raised up

[icy dragon]

What even 32GB of DT consist of lol

[spark steppe]

AWS Cloud now with LineTrace lookups :>

[muted ember]

Yes but will this be able to delete the previous widget that was displayed on the screen?

[gentle urchin]

Lidar clouds are way smaller

[icy dragon]

Even if it's just spawn point vectors, it should not be that big, unless it's 32+ million spawn points

[spark steppe]

you save a reference of the widget that you add, and call remove from parent on that reference before you add a new one

[spark steppe]

may have been the whole HitResult 🤷

[gentle urchin]

^

Yepp probably

[spark steppe]

i don't even know how they got that data into the table in the first place

[gentle urchin]

Also, at such sizes

Proc gen is probably better way to go..

Work amount wise

[icy dragon]

I can't even comprehend how an Excel spreadsheet would take 32 GB

[spark steppe]

bet those exist

[gentle urchin]

Ive had logs at 100mb or so

[icy dragon]

I'm sure nuclear launch codes are smaller in size than that

[gentle urchin]

They feel litterally endless

[maiden wadi]

2,863,311,530 spawn points to be exact. 😄

[gentle urchin]

Whats the point of the spawn point anyways?

Like, why store it ?

[spark steppe]

https://forums.tomshardware.com/threads/what-would-be-the-best-pc-i-can-build-for-excel-spreadsheets.3239373/ funny that those questions even exist 😄

[gentle urchin]

Rand vector trace downwards from maxZ

[muted ember]

will try to send you a picture when I get home

[maiden wadi]

The issues are that it came from a person that doesn't really understand the need to prioritize memory availability over cpu use. Processing is dirt cheap. Memory is expensive and precious.

[spark steppe]

well, it's a tradeoff

[icy dragon]

I felt like I lost few braincells reading his reasoning behind 32 GB data table fiesta

[spark steppe]

i do a lot of precomputing in my project to save cpu time on the long run

[maiden wadi]

They'll come back. They just went to get drunk to not remember what you saw.

[gentle urchin]

Yeah im gonna need to precompute some things as well i think

Not quite sure how yet

[harsh coral]

help, loading visual studio just brings me to this page and not code

[gentle urchin]

But i do need some static lookups for my pathing

[icy dragon]

Are you going to make BP in Visual Studio? 🤔

(still not sure why Visual Studio don't really have visual scripting, if visual is in the name)

[harsh coral]

idk im new i was just trying to look at some code of the nodes

[icy dragon]

Oh.
If you're on vanilla launcher build, it's useless.

[earnest tangle]

Huh?

[icy dragon]

"Reading C++ symbols" of a BP node always work with source builds, where the source code is still exposed and pretty much editable

[harsh coral]

uh so how do i see some code and maybe even edit a node?

[spark steppe]

ok hear me out, make a data table and just store every trace in it...

[harsh coral]

i saw the read c++ symbols and then it said loading visual studio and i got here

[icy dragon]

If it's a node built in the engine, you can't edit it.

[earnest tangle]

You can look at the engine source if you have engine source + symbols installed

Doubleclicking a node usually works but not always - in that case you can search by name in the source

[harsh coral]

then i just want to look at the c++ of some of the node

i have the symbols thing turned on

[spark steppe]

also i would step away from the idea to modify engine code, rather try to rebuild it in your own module

[harsh coral]

i just installed it

[icy dragon]

Do you install the source code part?

[gentle urchin]

Oh, this sounds interesting ! Give me more

[icy dragon]

Also I'm sure it only works with C++ projects.

[gentle urchin]

Can i just store it in the ram?

[spark steppe]

prerender everything, store it in an sqlite DB and port your game to renpy

[harsh coral]

uh lemme chec

[gentle urchin]

Query my viewport ?

On tick?

[harsh coral]

this it?

[icy dragon]

People managed to put Crysis in VRAM, in its entirety, so why not :P

[icy dragon]

Yes, engine source. Already installed.

Is your project a BP only project?

[harsh coral]

it's a bp i dont know about only bp

when i made it i pressed blueprint

[icy dragon]

Then it is BP only, which makes "Reading C++ Symbols" on a BP node won't work.

[harsh coral]

oh

how do people use both then?

[gentle urchin]

You can add a c++ class to it tho

[harsh coral]

oh

[icy dragon]

For starters, making custom BP node in C++ for the project.

[earnest tangle]

Yeah you can just add a new c++ class to it which will effectively enable the C++ functionality

[harsh coral]

how do I make a new bp node from c++, like how do I open the editor with it. Do I just write code in visual studio and then drag it into the bp?

[icy dragon]

https://www.youtube.com/watch?v=6485d5Zoc_k

[harsh coral]

tanks

[spark steppe]

https://tenor.com/view/aww-tanks-aww-tanks-thanks-thank-you-gif-24313939

[icy dragon]

I'm not the Tank guy tho (surely he's in #cpp)

[chrome nymph]

is there an easy way to get child actors of an actor?
context:
Actor A attaches to Actor B.
Actor B has many Actor As.

GEtAllChildActors doesn't work because it wasn't spawned by B.
Is the only way to add a tag to A's component, then get Actor of A's component?

[odd ember]

registering them with their parent

but it does beg the question of why you have many actors attached

[chrome nymph]

floating collectable and discardable orbs

[chrome nymph]

is there an event that the parent can observe?

[tight schooner]

Create an event dispatcher if you want an actor to listen to another actor

[odd ember]

why wouldn't you just have an array of actor references?

[onyx token]

if i have a component added to an actor - and that component has an array - can i make that array public in the editor so i can add stuff to it?

[odd ember]

I'll let you in on a secret

it's already public

[onyx token]

i can't find it tho

[odd ember]

did you mean in the details panel?

[onyx token]

yeah

i wanna give my lil bandit npc some weapons

[odd ember]

expose it as normal, then in the details panel of your actor, click on the component and it'll show up

[native linden]

what's the quickest way to create a blueprint at my location, possess it then destroy the old blueprint?

i need to make a "transformation" between blueprints

[tawdry surge]

Spawn the new one, then destroy the old one

[native linden]

i know that. i mean what's the cleanest way in terms of blueprints

[odd ember]

spawn the new one, then destroy the old one

[native linden]

i think i got that by now

forget it. im just going to go ask on a forum somewhere

[brazen pike]

yeah I think you might want to spawn the new one, then destroy the old one

haha no, just write it out as you think it should be done and post here and if there are any optimisations someone will let you know

[odd ember]

you're onto us 😓

[native linden]

i would but im still pretty new to blueprinting

i don't know what nodes to use, where to put it

just some pointers would help

[brazen pike]

Spawn actor at location, possess the output, then destroy the current actor

[native linden]

i see

thanks :)

how fast would that be?

[odd ember]

very fast

[native linden]

im planning on it being in a vr game (but im masking the transformation with a flash)

[brazen pike]

probably near instant right?

[native linden]

oh yeah it'll

yeah it'll def be a lot faster than that

hmmm

oh no i mispoke sorry

would i put that in my player BP or my player controller?

[odd ember]

your controller

[native linden]

alright

this is fun

how do i call an event from my player controller in my character BP?

[icy dragon]

Get Player Controller -> Cast to [your PCon class] -> call the event.

Of course this goes without saying it works best in single player game.

[earnest tangle]

You can just do Get Controller which is a method on the character

it will get the currently possessing controller

(or rather, I think it's on Pawn, but Character is a Pawn)

[native linden]

this is probably wrong but

this is my code to spawn, possess then destroy, am i missing something?

[earnest tangle]

You are possessing with Self and then destroying Self

That seems somewhat counterproductive

[native linden]

i see

[brazen pike]

Idk how your set up is, but you can probbaly connect the output of the spawn to possess

I've never done this tho

[native linden]

i can indeed

[native linden]

what would i need to change to fix this?

[earnest tangle]

I don't really know what the goal there is

[native linden]

woah okay

it works

but i spawn out of bounds

[earnest tangle]

Are you spawning this from your controller, and then want to possess it and destroy the previous pawn?

[native linden]

yeah

[earnest tangle]

Right - so you need to actually connect the previous pawn into the Target pin for Destroy

otherwise you are destroying Self - that is, your controller

[native linden]

yeah i figured that might be it lmao

so i need to get a reference for my current pawn?

the one before transformation

[earnest tangle]

Yeah

[native linden]

aight. and how would i do that

[earnest tangle]

Before you call Possess, you can do Get Pawn and save it into a variable

[native linden]

i also need to get my current pawns transform so i can plug that into the transform of the created actor

get pawn?

is that a node? i can't find it by searching

oh wait nvm

[brazen pike]

"get player pawn"

[spark steppe]

do you run that code in the controller or the character?

[native linden]

controller

[spark steppe]

then get controlled pawn iirc

[native linden]

aight

[spark steppe]

and you may have to cast it to your character class depending on what you want to do with it

[brazen pike]

are you telling me those do different things

[native linden]

both popped up but controlled spawn sounds more efficient

[spark steppe]

yes

[brazen pike]

I've been using them interchangeably

[spark steppe]

the 2nd one uses the controller which you feed it to (or the controller you run it on)

the first one is the brute force way

[earnest tangle]

Yeah Get Controlled Pawn is the way to go in this case :)

It's always better to use the ones which give you the specific one, instead of by Player Index if possible

[odd ember]

are you destroying hte player controller?

[native linden]

im

hang on

im creating a new pawn at my position

possessing it

destroying the old one

[odd ember]

one is better than the other

guess which

[native linden]

i have get controlled pawn and get actor transform (of the old pawn)

i plugged the transform into the created pawn so it'll spawn at the same place, is that correct

sorry if answering this is annoying

i've just been itching to make something like this and i figure hey why not give it a go

[odd ember]

old isn't hooked up

so you're going to get a nullptr there

[native linden]

ah

[stoic narwhal]

Is there a way to stop actors appearing in the debug filter in blueprint? I've got lots of actors in my world and the debug filter is getting quite the bit full.

[spark steppe]

and hook it in before you possess the new pawn

[earnest tangle]

What's debug filter? 🤔

[native linden]

Blueprint Runtime Error: "Accessed None trying to read property Old". Blueprint: ben10 Function: Execute Ubergraph Ben 10 Graph: EventGraph Node: SpawnActor Heatblast

[earnest tangle]

Ohh of course

Yeah not sure if you can filter it, but I've noticed if you select the actor you want to debug, it at least sometimes defaults that dropdown to the selected one

[stoic narwhal]

Yeah just looking to save some time, seeing if I can mark actors to not appear in the filter

[weak zealot]

I want to rotate every object in this array, but i want them to stop once they equal any of these rotations in this float array.. i'm having trouble figuring out how. Any help?

[stoic narwhal]

You're not setting the variable for 'old'

[native linden]

old's supposed to be the old pawn

how do i set the variable for that

[stoic narwhal]

When you spawn the old pawn, set the variable there 😛

[native linden]

i see

[stoic narwhal]

Dont do this, this will literally delete the pawn you just spawned

[native linden]

oh wait yeah lmao

rip

[trim matrix]

Hey! so i have an item class with scene component as it's root component and a static mesh child of the root component. the static mesh have physics enabled. whenever i tried to attach the item object via "Attach Actor To Component" with location rule "snap to target", it doesn't update the location of the static mesh. (i'm disabling the physic of the static mesh before calling attach actor to component) i've read the unreal doc and it seems like that the "Attach Actor To Component" only attaches the root component (which is scene component) is there a way for me to attach the item without having to have static mesh as it's root component?

[native linden]

i don't know what i've done but the code refuses to work now

lmao

[trim matrix]

Tl;dr: is there a way to make the "Attach Actor To Component" work with scene component as root, and have static mesh with physics enabled?

[stoic narwhal]

There's AttachActorToActor too

[trim matrix]

ok i'll try and see if that works, thanks!

[stoic narwhal]

Reposting here:
Anyone know a way to hide actors from the debug filter here?

[trim matrix]

nope it didn't worked