blueprint

[radiant hinge]

^

[lunar sleet]

Your widget should represent the int calculated outside of it not the other way around

[modern radish]

if I get a variable value from my game instance, increment it inside my BP Player controller, do I need to set it again or is Increment enough to propagate it back?

[manic vessel]

Basically I want to set a max number of players in a session from the UMG

[lunar sleet]

That’s not where that should be handled

UMG should visually represent the underlying logic not be the root of it

Unless you’re talking a text box where players can put a number that you can run logic against, then you don’t have a choice ig

[manic vessel]

MAKES SENSE , but this is for a host screen and I want to host to pick there values like like how many bots to spawn .

[dawn gazelle]

The ++ node will automatically set the value.

[manic vessel]

thats what I mentiond , I will have arrows in ether direction instead that Edits the int value then the text block will just display it

everyones happy

[modern radish]

Thanks a lot

[lunar sleet]

I think he was replying to someone else but yeah that prly works

[manic vessel]

I know This Is not a UMG . But wanted to show My solution To the previous Issue. I thinks Its nice and simple

[silent quiver]

Is it possible to only call the animation BP update when actor sees pawn?

I've got a simple "on see pawn > walk towards pawn" BP, and I realised it's constantly updating it's animation, though it only needs to animate, when it's actually seeing the player (pawn). So can I trigger the update on the animation BP from the actor BP, when the actor BP sees the player?

[scarlet hedge]

How can I make the START SCALE and END scale a variable ?

or change the transform of the set static mesh

[faint pasture]

Describe the animations your actor plays at any given time

are you using a blend space or just playing an anim?

[solemn basin]

I would like to create a card deck list button that shows the cards in order from top to bottom. This deck is created from list that is only numbers. What structure should I use in unreal to create this list? If I was coding it outside of Unreal, I'd probably use a text document to read and write the deck list. Is there something similar in Unreal?
I was thinking I should use a Data Table, but i'm not sure if I can read and write directly from a Data Table.
Right now i'm using a Data Table to hold all the Data about the cards: CardID, Name, and Image.

[silent quiver]

I

'm using a BlendSpace

[lunar sleet]

You can’t edit DTs, prly want a struct and not one made in blueprint

[faint pasture]

Why would you need to right to it at runtime?

The data table defines which cards are in the game.
An array of card structs can define a deck or hand

[faint pasture]

So what's the problem?

Why do you want to turn off animations when not moving. Just let the blendspace do the work and give it an idle anim or pose.

[silent quiver]

It's not necessary, I was just wondering if it would be more optimised to only update the animation when it actually needs to run. Right now it's constantly updated, and when the pawn is moving, it of course runs the animation

[solemn basin]

I'll have to look up what a struct is and how to make it outside of a blueprint.

[faint pasture]

Deal with that when it needs to be dealt with

I'm guessing it's not a problem right now if ever

[lunar sleet]

Make it in cpp, that is

[faint pasture]

Making one in BP is fine if you're brand new and just learning, but for a Real™️ game I'd make it in C++

if someone doesn't know what a struct is they are nowhere near using C++ right now lol

[lunar sleet]

bp structs at broken when it comes to editing them at runtime

[silent quiver]

True 😅 I guess I got a little carried away, since I was already optimising a BP I got from a tutorial

[lunar sleet]

Yeah that’s a valid point

[faint pasture]

Just don't get too wild with it and just pass them around as data and things should work mostly

[lunar sleet]

Well he wants to do live edits at runtime on them as far as I could tell

So that should be fun 😀

[silent quiver]

It really isn't 😊

Anywho, thanks for the help.

[solemn basin]

I probably don't need to. At some point, I'd like to make a deck editor so a player could build a deck to be used, but i'm nowhere near that.

[faint pasture]

There's a difference between a deck and the set of all possible cards

The DataTable contains the definition of all cards

the deck contains instances of cards or just rows of the datatable

[solemn basin]

that's good to know!

[solemn basin]

would a deck list just be an array that points to each of the rows of the datatable?

[faint pasture]

What do you mean by deck list?

If it's a collection of decks

Then it'd be an array of Deck structs which contain arrays of Card structs or row ID's (which can be used to lookup the card)

[solemn basin]

A list of cards that the deck uses.

[faint pasture]

Yeah that'd just be an array of either card structs or row ID's

Struct Deck
Deck Name
TArray<CardStruct> Cards
Other data
Other data

[mild pine]

Hey guys, how can I spawn an actor along a line from the AI's actor location? I want to spawn multiple missiles dotted along a line.

[faint pasture]

Do you know how to spawn an actor at a location?

[mild pine]

Yeah, I'd prefer not having a lot of scene components though. Might've just coded too much today to think straight about this issue hahaha. Was thinking maybe there was a way to calculate increments between -250 (for example) and 250, and spawn an actor on every 50 increment 🤔

[faint pasture]

There is, it's simple math

I was just asking if you knew how to do the spawning part

[mild pine]

Oh, yeah

I just need help with the math 😅

If you don't mind 🙏

[faint pasture]

Just calculate the difference between the start and end points, then loop and add Index x Difference / Count to the start position

[mild pine]

Oh, so using a line trace?

[faint pasture]

what

[trim matrix]

[faint pasture]

what does a line trace have to do with this?

it's just math

do you have the start and end position?

[mild pine]

Oh no, I just need to have a start and end point

I'll pop down two scene components and go at it from there 🙂

[faint pasture]

you have a target right?

you don't need scene components

[mild pine]

Yeah, I have a target 👍

[faint pasture]

End = Target.Location
Start = Self.Location
DifferenceVector = End - Start
DifferencePerStep = DifferenceVector / (NumPoints + 2)
for loop between 1 and NumPoints
SpawnLocation = Start + Index x DifferencePerStep

[mild pine]

Thanks!

[sand slate]

Hello! Im trying to make a game with local multiplayer, and I read online that you should controll the character from the player controller and put all the actions and inputs there for a local multiplayer. I put everything in the pawn, is it true that I need to putt everything in the player controller?

[faint pasture]

no

inputs in pawn is fine

[zealous moth]

Depends on inputs

[crude spruce]

i think i solved it

oh no i didnt

epic be like: y u wanna exclude on a local basis anyway? just press the make game buttons!

[trim matrix]

woah u seem to be doing some crazy stuff there

[crude spruce]

i need a reliable updated character mesh without specific limbs.

[trim matrix]

like a mesh splicing thing?

[crude spruce]

So far its reliable unles sits gonna be ragdolled.

No its 16 mesh parts

modular character

[trim matrix]

crazy

[crude spruce]

the effect i need is to skip traces against bones where the limb is missing.

i have learned that mesh merge is pretty hot

Can input an array of skeletal meshes

when using leader pose components i had to add components and all that

this just makes a mesh and i can set one component to the result

heck... with mesh merge my lookup routine for any local limb details is just a bless

and morph targets is disabled. Since i dont have any yet, its fine. Im assuming that when i get some, this is a feature or its cheap to work around 😄

[silver sentinel]

hey guys - is is possible to somehow set focus between 2 actors or am I barking up the wrong tree?

[trim matrix]

set focus?

[silver sentinel]

hmm looking at this it might be something custom in the poiunt and clkick adventure toolkit

[trim matrix]

wdym set focus?

[silver sentinel]

its coming from a marketplace asset, I thought it was generic blueprint my bad

[trim matrix]

but what are u trying to do?

U mean "set focus" as in making the cam look at some point?

[silver sentinel]

there are some cam setups included, you can choose to 'focus' on an actor, i was just trying in the level blueprint to set the focus on a worldspace point between 2 actors

I can shift the focus based on events but il have to mod the cam blueprints i guess to allow extra stuff

[prisma delta]

Alright... I need to figure out where the best place to store player death and respawn code is.
I had it in game mode and was told that wasn't correct, put it in the parent character blueprint, now when my player is destroyed my controller says the player is invalid and stops communicating with the character blueprint.

And apparently booleans can't be saved or loaded.

[faint pasture]

wat

[faint pasture]

GameMode

or character, depending on what Dying means

[runic parrot]

Hi!

Does anyone know if there's a way to batch-modify the value of some property in a BP DataAsset based on some other data asset?

For example:

"DataAsset_A" = "NumberProperty = 3"
"DataAsset_B" = "NumberProperty = 25"

Read B and modify value of A to 25

[prisma delta]

My boolean parameters to detect of mouse and keyboard or of gamepad is active doesn't save. It resets to default values when the save game load happens

[faint pasture]

Show your saving and loading code

[prisma delta]

sure sec

save game code

it does save and load the transform

loading

just not the bools

[mild ibex]

Bump 😔

[faint pasture]

You sure you don't just change the bools somewhere else?

how do they get set to begin with?

[prisma delta]

They're set by an event dispatcher from the options widget

After They're set it runs the event to the save game function

@faint pasture

[faint pasture]

Print the bools in the saving and loading functions

[prisma delta]

I did and they return the proper values when the dispatcher fires, but whenever the character is destroyed, it resets the booleans to default value

Basically it completely ignored the load even though my print says it's been saved and loaded

I know the save/load functions are working because it is properly saving and loading the transform of the spawn point when changed

[fiery moon]

Since it loads just fine, but is then reset, isn't it just loading too early? before some default or being done or whatever?

[faint pasture]

What values print after saving and loading

I bet it loads and then later gets overwritten by whatever sets them to begin with

[prisma delta]

Mouse active is set to false then saved when the character respawns it sets the value true

There's only one place it can be set, which is the dispatcher

I read on the forums that booleans can not be saved or loaded because they're (for lack of a better term) temporary?

[frosty heron]

You can probably do it with editor utility widget.

I batch edit my material interface using editor utility widget.

[prisma delta]

I guess I need to find a better way to enable/disable mouse and keyboard or gamepad

[frosty heron]

Wut

You can certainly save and load boolean

[prisma delta]

Booleans not being saved to my save game bp

[frosty heron]

Skill issue then?

[prisma delta]

The transform however is

[frosty heron]

I save and load my bool all the time

[prisma delta]

You can check my code ^

Tell me if I fkd up

But I know it's saving and loading the changes to the transform so I doubt it

[frosty heron]

It's pixelated but it doesn't look great

When you cast , just get the variable and plug it to the cast

I can't read the rest from my phone

But anyway you can save a bool

I do it all the time

[runic parrot]

I'm going to check it out, thanks!

[faint pasture]

@prisma deltaHave you printed the bools on save and load and confirmed that they are not the same?

[prisma delta]

Yes

The save game and load game function is in my character blueprint event graph so there was no need to cast to them.

As the booleans exist in that blueprint

[dawn gazelle]

Delete your .sav file and try again. You absolutely can save bools and your code looks correct there.

[prisma delta]

Okay I will give that a shot

Funny how I test everything last night and it's working perfectly, open the project today and a dispacher errors out >.< (unrelated to the booleans)

[frosty heron]

You should only load the savegameobject once as well

it seems to me you are loading them everytime you save the stats (The load will return different savegameobject)

[prisma delta]

It loads the saved settings on respawn

[frosty heron]

yes but not necessarily using the same savegameobject, so becareful

[prisma delta]

Not sure of a better more efficient way, I guess I just don't know what I don't know

[frosty heron]

it's not about being efficient but getting the same savegameobject that you want.
Imo you should only load the SaveGameObject Once and use that as the reference for the rest of your game (Eg when you want to save)

when you want to save, you shoulnd't have the need to LoadGameFrom slot

you should just, GetGameInstance->GetMySaveGameObject->SaveToSlot

[prisma delta]

That makes sense

[frosty heron]

I ran to this problem the other day and I relaised that the output from each LoadGameFromSlot is not the same

hence things are not saving properly

[prisma delta]

I've been saving references to the blueprints and variables, but neglected to do the same with those functions

[frosty heron]

all the best

[prisma delta]

Thanks, I'll need it

[zealous moth]

Can you save game data using data assets?

So far I have been using structs inside of the save game file

But these tend to be unstable

[crystal crown]

very basic question but how can i set previous axis value. brain not worky

[frosty heron]

I don't use data asset but I do imagine they are static like data table.

Data asset isn't replacement for struct. Struct can be instanced

Struct save just fine, but I don't mean bp struct.

[mental trellis]

Previous axis value?

[crystal crown]

i want to do this in bp
if (FMath::IsNearlyZero(PrevThrottle) && !FMath::IsNearlyZero(Throttle))

[mental trellis]

And what is prevthrottle? Be specific.

[crystal crown]

const float PrevThrottle = DrivingState.Throttle;
Throttle = bThrottleDisabled ? 0.f : Throttle;
VMC->SetThrottleInput(Throttle);
DrivingState.Throttle = Throttle;

[mental trellis]

Right. So you have prev throttle. What's the issue?

[zealous moth]

good point. i guess it would be best to use multiple structs instead of a single one in case it gives out

[lunar mulch]

I just found out i can't use Timelines on Components or inside of functions. Im trying to "Fade in" a variable, usually i'd use a timeline for that. Anyone know a backup solution that could gradually fill up a variable?

[mental trellis]

Create an actor with a time line component and attach it to your component and use it to fade your variable? 🙂

Or put a time line in the host actor.

[dawn gazelle]

Or use tick with a gate that you shut off when the target value is nearly equal to the actual value

[lunar mulch]

hmm all good ideas thank you

[pulsar crest]

so I'm trying to access the variables of my struct in a blueprint, but they do not show up on the context finder
They show up on the default values

I have them defined as UPROPERTIES I'm not sure what im missing

USTRUCT(BlueprintType)
struct FIntMatchStat
{
    GENERATED_BODY()

    UPROPERTY(BlueprintReadWrite)
    int32 CumulativeTotal;
    UPROPERTY(BlueprintReadWrite)
    TMap<float, int32> ValuesByTime;
    UPROPERTY(BlueprintReadWrite)
    int32 TeamId;
    UPROPERTY(BlueprintReadWrite)
    FString StatName;
    UPROPERTY(BlueprintReadWrite)
    EMatchStatType StatType;

[mild ibex]

following up with this

I read that actor components dont have transform values at all, which makes sense as to why the vector widget doesnt appear, because it technically cant exist.

So, is there a way to add something with transform values as a "co-parent" on any actor. For instance adding a scene component works but will only ever be a child of the actor causing pretty much the opposite of what i want to happen.

[pulsar crest]

ahh im dumb i forgot you need to break the struct

[runic parrot]

Has anyone have luck editing a DataAsset default values using a Editor Widget?

[frosty heron]

Start by getting the data asset I suppose. Most likely there will be cpp involved

Things like rebuildwidgeteditor() and postchangeedit() etc can only be called in cpp afaik

[runic parrot]

Oh i didn't tough about making a new Editor Widget class from a cpp base so i can have more tools there

thanks for the info, i'm going to check that

[frosty heron]

Bp is the free trial unfortunately

[runic parrot]

i'm okey with c++, didn't come to my mind to do a custom class there for Editor bp widget

sometimes the answer pass by so easily (?)

[frosty heron]

I create the editor utility widget normally

Its a widget after all

But to get the uasset I run cpp script from my blueprint function library

Then I iterate through all my material and change its static switch setting

[runic parrot]

you can also get the UAssets with this on the asset manager

1. make a constant on your asset manager class for the "type" of items you want to register

[frosty heron]

👍

[runic parrot]

2. On your primary data asset, override the method "GetPrimaryAssetId"

[frosty heron]

Nice

[runic parrot]

3. Register it on the editor by name, director or specific location (can't compile the project now, crap)

so you can do "Get me all the assets of this PrimaryAsset Class"

it's great for expansions or updates

[frosty heron]

Don't you want to grab two specific dataasset.uasset

And set its member variable

You can use class list in editor utility widget to select the DA

[runic parrot]

yeah, kind of.

1. I want all the "Loot Chest" Primary data asset
2. Loop all the assets in the array property "ItemsDrops"
   and adjust members of "Loot Chest" asset based on the properties of "ItemsDrops"

[frosty heron]

Gl

[ivory garnet]

Does anyone know a good way to handle a ready check to pass turn once everyone's ready in a multiplayer game? I'm struggling...

[frosty heron]

#multiplayer is a new level of animal. Replicating bool to check if players are ready should be the easiest part of multiplayer

[ivory garnet]

Thanks, I'll see if I can figure something out. Yeah it's giving me a migraine

[runic parrot]

On GameStat(I would do it on gamemode) keep array of active players, do a map of PlayerController->Bool

OnPlayerControler -> RPC-> (ChangeReadyState) ->Grab game mode, grab Map, edit value to new input value or flip

Or you can do it as a replicated property on PlayerState and keep track there

you can use rep notify to inform the changes to players

If you are not familiar with MP, the player state one is probably the best

This is pretty much what you want, but instead of score, bools.
https://www.youtube.com/watch?v=AmFGRmfAEHs

[frosty heron]

Read the compendium in the mp channel if you haven't

Bp only fps is not even playable imo

I hope Ur mp game is not fps

[ivory garnet]

It's a Turn based strategy game

[frosty heron]

At most you can do a board game or turn based game

Strategy like controlling units?

[runic parrot]

This can't be recommended enough*

[ivory garnet]

Each player has one unit, you can choose an ability like league of legends, and where to move for the turn

[frosty heron]

K at least it's not like age of empire like strategy game

Should be doable

[runic parrot]

sort of like rise of kingdom?

[ivory garnet]

Maybe closer to divinity original sin, but each player has 5 skills and the map is a smaller arena

[runic parrot]

yeah, sounds doable

I would play with MP first to get the basics of it

[ivory garnet]

That's reassuring haha, the multiplayer part is definitely giving me a run for my money

[frosty heron]

Can always do single player for easier mode

[runic parrot]

you get a lot of free space since you don't need milisecond precision or pixel track

[runic parrot]

@frosty heron by any chance did you got a BlueprintEditorUtility made with a cpp parent class child of UEditorUtilityWidgetBlueprint ?

can't reparent my utility bp or make a new one with this custom class as base

[frosty heron]

I didn't make a base class for the editor utility widget.

Made it normally, however the functions for the widget like grabbing assets in the content folder is a UFunction from my cpp bfl

@runic parrot

[runic parrot]

what about the part of editing the data assets default value? was that on BP or it used c++ functions?

I can already grab them on BP, but can't find how to edit the defaul values

[frosty heron]

Cpp function, it cannot be done in bp. I never tried to change data asset, what I change was material interface

[runic parrot]

ohhh my bad in that case, i'm going to confirm if it's possible to edit DA default values in that case

[frosty heron]

Pretty sure it's possible with cpp

I know u can change data table too

Which is only possible in cpp as well

[runic parrot]

yeah, it has to. The DataAsset widget is doing it with some cpp functionality, so it's there somewhere

[frosty heron]

I would ask in #cpp , they have better ideas. Can't check rn cuz my nephew is using my pc

My only experience is not with a blueprint assets but with material

[novel rock]

How dose the third Person character example allow the camera to rotate around the player?

[tidal marlin]

GetPlayerController()->SetControlRotation(GetControlRotation().Combine(0,0,1)) on tick

[novel rock]

Figured it out

[graceful zodiac]

Is it possible to set 'Expose on Spawn' variables when you use a class variable to spawn an actor? Or only if you 'hardcode' the value.

[frosty heron]

You don't have to hardcore the value but I think the class has to be the type that has the exposed variable

[graceful zodiac]

Ah - nifty! Unfortunately, I need to keep it generic, but good to know that's an option. Thank you!

I'm just setting the variable after I create it now, should still work, will just need to make sure it's valid before I do anything is all

In theory I could cast the generic class to the specific class 🤔 I'll do that if I need to

[violet chasm]

Could I run a line trace on the GPU? I have a simplex noise node driving the noise of a mesh through WPO and hence I can't replicate the noise in blueprint to drive a buoyancy function. I setup a render target under the boat to read from the scene depth but it's too slow. So I was wondering if I could a run a line trace from under the boat but on the GPU so that it would intersect with the mesh? There many of those going on to render a scene so one more wouldn't hurt right?

[frosty heron]

@runic parrot Yo, u there?

[runic parrot]

yeah, what happened?

[frosty heron]

This set the properties

[runic parrot]

but that is at runtime, right?

[frosty heron]

editor time

[runic parrot]

btw: I already got it working with the suggestion of someone from cpp, it was really easy and it's stupidly efficient for what i wanted : D

oh that's nice

[frosty heron]

That's great

[runic parrot]

This to get all the assets of "LootChest" type

and the method is on cpp

[frosty heron]

good stuff

[runic parrot]

your info helped a lot also, thanks a lot!

[frosty heron]

doubt it but good to see you sort it out

[topaz turret]

Is there a way to set or reset velocity? I'm trying to make a double jump that can be used any time while InAir and grants the same height boost even if triggered after apex, so I figured I'd do that just before that 2nd jump to prevent a fast fall from completely negating the force of it, but I'm not finding it or anything similar 🤔
edit: Found a solution! For anyone else interested, there is a node called "Stop Movement Immediately" which is essentially this exact function. 👍

[scarlet pumice]

Performance wise, is there anything to watch out for with this pattern for infinite looping?
Any tips on making it look better? 🙂

[frosty heron]

just use timer

[scarlet pumice]

what if I want to randomise the delay?

[frosty heron]

you can do that with timer

[scarlet pumice]

different delay each time?

[frosty heron]

New timer each time the last one finished with a new time (can be randomised)

[scarlet pumice]

like this kinda thing?

[frosty heron]

not quiet

@scarlet pumice

actually same thing

[scarlet pumice]

cool, thanks, Create Event looks neater 👌

and the Start custom event, good tips, thanks

[frosty heron]

You can store the handle incase you want it to stop

[scarlet pumice]

it's working perfect 👍

Do you know if there's any difference re: performance between using a delay loop or a timer?

[frosty heron]

not sure about performance difference but I heard that it's not significant at all.
With delay you promised to run what ever comes after the delay and that could be an issue when you want to modify your code.
Using timer, you can clear and invalidate the timer should you chose to stop the Loop.
Re-routing the nodes back to the previous one normally quiet cursed and make debugging harder.

[scarlet pumice]

Yeah that makes sense

It always felt wrong routing back

[frosty heron]

If you care about performance, you would be looking at soft references, moving latent operation like for loop or heavy nodes to c++

[scarlet pumice]

Yeah I'm very familiar with the C++ side, it's the BP that's new to me. I am just wondering how the Delay node is implemented. Under the hood it probably uses a latent action and a timer anyway

[frosty heron]

don't worry about delay/timer/ticks

I've no idea with the C++ side, but we kinda have to use timer because there is no delay node there.
There is Laura's coroutine if you need something like delay in cpp

[scarlet pumice]

I want to establish good habits in the BP side of things too

[frosty heron]

you can always profile to see the performance cost. I personally never do it cuz I'm lazy

[scarlet pumice]

our game thread is insignificant compared to draw thread 🙈

[frosty heron]

Yeah, depend on the scope of the project

i heard components is pretty expensive

and ofc blueprint tick is heavy

[scarlet pumice]

yep we try and avoid tick in general

[frosty heron]

don't think you should avoid it

there are things that belong there

like movement for example

or animation related

[red berry]

Why does blueprint objects have no constructor? I want a lightweight class that I can call some things straight away but I don't want to have to use Actor or ActorComponent

[thin panther]

Nothing in BP has a constructor

You get a construction script, but this is not a constructor

[tidal marlin]

Good luck

[red berry]

Should I make the weapons and guns as an Actor or object? If all the logic (e.g. the fire rate, chambering, etc.) is handled by animations, since I need a state machine, then does that mean the AI can exploit a gun and make it rapid fire when its not meant to?

[tidal marlin]

Better actor. Or better yet, Uobject. In general, it all depends on whether you are sure that the functionality of the weapon cannot be expanded. If it’s enough for you to fit the logic of the weapon into the animation, you definitely won’t have the opportunity to throw away the weapon, there’s no multiplayer, etc.

[red berry]

Well I want when the weapon is dropped, either intentionally or if its thrown away or dropped from death, the existing state should be saved. So if there's one in the chamber but the npc was killed halfway during the reload animation, the weapon will drop on the ground without the mag, and the mag will be dropped too on the floor nearby. This should be saved in the inventory too, and a nice to have is multiplayer too (but not needed yet)

[tidal marlin]

Ok. Use actor or custom uobjects

[red berry]

Why is it that you cant network replicate objects and structs in blueprints? What about if you have an Actor that has a Struct as a variable, does that Struct never get updated or replicated?

[frosty heron]

Who says u can't replicate structs or objects 0o?

I don't have much experience in mp but im pretty sure u can

some types that can't be replicated by default are Maps, Texture, material, audio, etc

You can replicatre objects but you have to use Actor channel afaik

gotta piggy back off an actor for it to be replicated

[bold phoenix]

Hi ! I have a problem when making the sun rotate in my game at runtime. If I move the Yaw from 0 to 360 with a slider and the "set actor rotation" node it works fine, but when I move the Pitch slider from 0 to 360 it also modifies the Yaw value of my actor

Any idea about where this might be coming from ?

[tidal marlin]

You can replicate object.

[gentle urchin]

And structs

[frosty heron]

Show your bp

[bold phoenix]

I don't have access to my computer rn, but it's really just a "set actor rotation" node linked to a slider with min value 0, max value 360

[frosty heron]

I figured you should only rotate the light component relative rotation instead of the whole actor

but again w/o seeing anything, it's hard to suggest

[true oriole]

how to change gamemode in blueprint ?

i want to open a level with different gamemode

because i want to change the character

ok i think i figured it out

[bold phoenix]

I'm sorry about that ...
There is no relative rotation because the blueprint is the light component ( sunlight ) of the level

I'll come back with some pictures

[hearty river]

hi guys how can i make that when i press the button "play" it change color from red to (for example) yellow?

[frosty heron]

Get the Image/Button/Widget -> SetColor

[hearty river]

Thank you

[patent scaffold]

Hi, I want to implement a simple door interaction system where when the player clicks on the door (I'm using EnhancedInput), their look and move ability is disabled (through SetIgnoreMoveInput & SetIgnoreLookInput) and the movement of the mouse only on the X-Axis moves the door. I'm stuck on the last part as when I disable look, (obviously) the movement for mouse on the X-Axis is also disabled and the door doesn't budge. What other way could I go about solving this issue?

This is the event graph on my door (I realise the input action here doesn't work the same as it did in the previous input system)

[red berry]

How do you prevent a circular reference if a player has an equipped weapon, but we need to know if the weapon is equipped to someone or not?
If I use a variable in the weapon, its not a 1-to-1 relationship, because the player might lose the reference to the weapon, or stash it away, but the weapon might still be "isEquipped" either to true, or to the previous player. Is there a way to get a reference to the player but without loading the player BP?
This is needed because in OOP its bad to have circular references, and children shouldn't have references to parents

[clear sierra]

use interfaces to remove circular references

[frosty heron]

Wdym by circular reference? maybe circular dependencies?

what's wrong with Object A knowing Object B and Object B know about Object A

also in BP any hard reference will load the object to memory

downside of it

[clear sierra]

You cant compile code in C++ if you do it like this, In blueprint you can do circular references, but usually you add interaces to remove circular references.

[red berry]

That doesn't answer or fix that the weapon can still think its equipped to the player, but the player has already stored or dropped the item. I want to prevent this from happening in the first place.
In javascript you could pass a callback function from the parent and you would call that to check if the player has the item still equipped. I don't think you can do anything like that in Unreal. There's no callback functions. Event handlers you can call don't return values

[frosty heron]

you can pass values with delegate

or event dispatcher

[red berry]

I know you can. But I need to return or get a value. Instead of having Item: IsEquippedToPlayer, which is a variable. We can instead call a method in the player, IsEquippedWithItem. I need a return value from the event dispatcher

[frosty heron]

I don't know what Weapon is in your case but generally you want to broadcast events when the Player pickup an item, drop an item, give an item, etc etc.
The broadcast will pass along the needed data (eg the weapon) and handle call accordingly

Bind WeaponDropped
OnWeaponDropped -> GetDroppedWeapon -> SetOwner to None -> Set CurrentEquippedWeapon to None -> Inventoryweight =- , etc, etc

[red berry]

EventDispatchers don't have output variables

[versed sun]

Pass along a ref to Self, and call a seperate function to return

[frosty heron]

I don't know what kind of model do you have in mind but what's stopping you from creating weapon system that is not ridden with bugs with what's offered on the table?

[red berry]

I dont know why its so hard in blueprints to do something so simple:

1. The "easy" hacky way (not maintainable, will be buggy eventually)
   Player

• Var:EquippedItems (array)

Item

• Var:EquippedToPlayer (Actor)
  or
• Var:IsEquippedToPlayer (boolean)

2. What I want, more maintainable and robust, less buggy
   Player

• Var:EquippedItems

Item

• Func:IsEquippedToPlayer (boolean)
  -- Get some callback or event dispatcher, where we call the parent, and check Parent>EquippedItems

[frosty heron]

https://stackoverflow.com/questions/1897537/why-are-circular-references-considered-harmful
'Circular dependencies between classes are not necessarily harmful. Indeed, in some cases they are desirable. For example, if your application dealt with pets and their owners, you would expect the Pet class to have a method to get the pet's owner, and the Owner class to have a method that returns the list of pets. Sure, this can make memory management more difficult (in a non-GC'ed language). But if the circularity is inherent in the problem, then trying to get rid of it is probably going to lead to more problems.

1st page in google if you need validation

What's stopping you from calling the owner of the weapon and get its currently equipped weapon?

is this the concern "Is there a way to get a reference to the player but without loading the player BP?" ?

[red berry]

Loading the playerBP is of secondary concern, but the first concern is that if the player drops the item, the item should no longer have a reference to the player.
It would be simpler if there was a way to do it, like how 1-to-1 relations are done in SQL and databases

[frosty heron]

kay? then what's stopping you from setting the reference ?

Weapon have variable Owner

OnWeaponDropped -> Set Owner to null

also if you need to get the Owner Equipped weapon, many ways

Just get a direct ref, or use component or interface

[red berry]

I know I can just set the owner to null, but if you forget to do it, then you get bugs. Its not a true 1-to-1 relation. A true 1-to-1 relation means if either the player or item delete the relation, then the other loses the reference. It should be built in. Is this not possible with OOP?
Edit: I guess I'll just use the simple IsEquipped variable in the item, as items shouldn't have any reference to the parent at all. I'm doing lots of reading on the web

[frosty heron]

define deleting the relation?

[red berry]

Just an automatic way of doing 2 things in 1 thing, without having to do 2 things seperately, which if you forget to do 1, it won't work
Edit: I can't seem to find any solutions to this. I give up over engineering this and I'll just use simple variables and just code as normally

[elfin hazel]

Mind if I ask, why would you forget to null a reference? Do you have a bunch of weapon classes that implement the same logic? That's where you can use inheritance to implement base functionality in a class, that is inherited to the weapons.

[crystal crown]

{
    if (const UChaosWheeledVehicleMovementComponent* MovementComponent = Cast<UChaosWheeledVehicleMovementComponent>(GetVehicleMovementComponent()))
    {        
        if (WheelIndex < MovementComponent->GetNumWheels())
        {
            return FMath::RadiansToDegrees(MovementComponent->GetWheelState(WheelIndex).SlipAngle);
        }
    }

    return 0.0f;
}```
How to make this in blueprint?

[frosty heron]

Try some 🦵 work, post what you think it does

You can make a function called GetWheelSlipAngleInDegrees that return a float , and takes an int as the input

[frosty heron]

Should be grateful to get null reference error because the editor tells you that you fucked up

imagine not giving error, you will go over thousands of lines and not knowing what actually went wrong

in cpp land , accessing null obj is instant crash

[crystal crown]

Not sure how to get wheel index

[frosty heron]

is this a function? go to the detail panel, look for input and output.
For input you want type int and name it WheelIndex
For output you want a float type and call it WheelSlipAngleInDegrees

[crystal crown]

The naming does not make the calculation. How do i set it up? Please help, kindly

Just like this?

[frosty heron]

you have to finish the rest your self, I don't have chaos vehicle

[elfin hazel]

The WheelIndex is the index of the wheel in the array. Like so. I also don't have chaos vehicles.

[frosty heron]

GetVehicleMovementComponent then cast it to ChaosVehicleMovement component

Also for the branch , Get the chaos wheel component -> Get Number of wheels and plug it to the bottom one below WHeel index

[elfin hazel]

I've found it very useful for functions that returns a value, to start with this:

So that it will always return something, can of course be returned earlier to break execution.

[crystal crown]

I can't set the output as the input of the function

sorry if i'm dumb

[elfin hazel]

If you have your function selected, the details panel should show input and output. In the input, add a variable and make it an integer, name it WheelIndex. Output do the same but it's a float named Degrees.

[crystal crown]

Like this?

🫣

[onyx violet]

im using this color wheel plugin, I have it converting the slider and color wheel into a hex using a node the plugin provides, but I don't know how to convert a hex code that's inputted into the seperate values of the color wheel and the slider independant of each other, anyone have an idea of how I could do it?

[frosty heron]

No, get wheel state from the ChaosMovement component

also this

[elfin hazel]

Something like this, it's the best I can do without chaos vehicles.

[frosty heron]

float ACitySampleVehicleBase::GetWheelSlipAngleInDegrees(int WheelIndex) const
{
    if (const UChaosWheeledVehicleMovementComponent* MovementComponent = Cast<UChaosWheeledVehicleMovementComponent>(GetVehicleMovementComponent()))
    {        
        if (WheelIndex < MovementComponent->GetNumWheels())
        {
            return FMath::RadiansToDegrees(MovementComponent->GetWheelState(WheelIndex).SlipAngle);
        }
    }

    return 0.0f;
}

[crystal crown]

There is no "slipstate" node. The wheel object reference is not compatible with float

[frosty heron]

Do this for a start

[elfin hazel]

Right. And the wheelstate takes the wheelindex, then Get slip angle.

[crystal crown]

Thanks guys. Appreciate the help. I have a few problems tho.

[frosty heron]

You are not done yet....

[elfin hazel]

Connect the wheel index to the "Wheelindex" of the "Get wheel state" node. Drag off the "Get wheel state" return node, and type break. It should show a struct, with a bunch of variables. Look for the slip angle. Connect slip angle to R2D.

[frosty heron]

right click and split this

[crystal crown]

it can't be split :// Why is this so difficult ffs

[frosty heron]

try break then

drag from it and type break

[crystal crown]

🤦‍♂️

[frosty heron]

you can prob split it, not sure if you doing it right

anyway break will get you the same thing

[crystal crown]

brake worked

[frosty heron]

Connect the SlipAngle from the break to the radianstoDegress

[crystal crown]

split selection was greyed out

[frosty heron]

and that should be it

[crystal crown]

Finally. Now what about the inputs and outputs in the event graph

[frosty berry]

How would you apporach having a ship enter the scene of your game like a start wars ship coming out of hyperspace? Like this:
https://www.youtube.com/watch?v=gWeOi909mNQ&t=6s
https://www.youtube.com/watch?v=SmCkEu-pSAs

[frosty heron]

that;'s outside what you've shown us

we only translate the function that was pasted

[elfin hazel]

Yeah, now this function can be used anywhere you want. You might want to select the function and check the Pure checkbox.

[fiery moon]

Maybe a material with a position offset animation? 🤔 or maybe rendering the the object into the scene with a different camera with an animation on that (maybe a fov anim?). Would have to play around with things to see what looks good I guess.

[crystal crown]

I mean do i not need to connect wheel index here?

[frosty berry]

Sounds interesting. I want the player, who is in their ship/vehicle to see, if they are looking that way, to see ships entering their space like that.

[crystal crown]

https://www.youtube.com/watch?v=62NWQKNaLwY&list=PLOAGgzHaPzsF1zqtGLGbnO_mRwcNi9R0d&index=123&t=615s

[elfin hazel]

If you want a particular wheels Wheel slip in degrees, you can use the wheels index to get it. That's all it does, and when you want that is up to you.

[crystal crown]

i mean i don't see any specified wheel in the epics code that i posted first

so i guess i don't need it

[keen depot]

Hi, I have question regarding VR in Unreal5, I am working on a project( not game) I did in unreal 4 where I use VR controllers but not really the headset. The problem in Unreal5 I noticed is that audio stops working and controller input buttons dont work when I dont have the headset on my head(the IR sensor sees I am not wearing the headset) . I started from the basic VR template but I dont see anything regarding get HMDWorn State. Anybody knows how you can disable this?

[noble ledge]

Does the Owning Object get set to something by default if nothing is given to it?

[crystal crown]

Actually they do check which wheel

[elfin hazel]

It does seem like it does set, but it might depend on where it is created. I create a widget in my player controller and without setting Owning Player, calling Get Owning Player in the widget, gets the player controller. This is mostly used in local multiplayer I believe.

[crystal crown]

How do i know which wheel is which index

[elfin hazel]

I am not sure, I've never use the vehicle template. Perhaps someone who uses chaos vehicles can chime in.

[lunar sleet]

#chaos-physics would be better suited

[crystal crown]

alright. thanks for the help.

[wheat flame]

Hey, not sure if this is the right channel to ask but im having issues where my character is way too mobile while in the air, can anyone help me out with that?

[crystal crown]

Okay so i know that index 3 & 4 are rear wheels, i think i need to do it like this? How do i connect the array index?

[wheat flame]

Its my first time using any engine tbh but i think i have an ok base at the moment

[dawn gazelle]

If you're using the Character Movement Component that comes along with the Character class, there's a setting on it called AirControl I believe.

[wheat flame]

Ya i tried editing that variable but it didnt do anything, ill try again once it installs on my steam deck or get home

[elfin hazel]

If you use the loop like that, you'll get the wheel spin in degrees for each wheel. If you only want specific tires, then you just need to enter those numbers and execute the node.

You'd have to call the node for each of the wheels that you want the spin of.

[crystal crown]

ah mb

[tight pollen]

any ideas on how to rename the key without changing its order?

[lunar sleet]

Lacking some context there

[patent scaffold]

Hey guys, I'd appreciate it if someone could help me out here! Or did I present my problem incorrectly and more clarification is required?

[frosty heron]

it's bad to allow inputs on something you don't own and by default it won't work unless you enable input

To narrow it down, don't do input in your Bp_door or w/e.
Do the input in your character/controller

do the interaction using interface

[patent scaffold]

Right that makes sense actually so basically call the interface from the character and implement in the bp_door

[frosty heron]

the bp door should implement the interface yes, and just call the Use event

the door don't need to know anything about the player

or the interaction mean

Character simply press Interact Button, then you can do line trace or w/e. If the hit actor implement the interface, then run it's Interacted/Use event

[patent scaffold]

yep got it that helps alot, thanks! Are interfaces the standard for these type of interactions?

[frosty heron]

the most two debated candidates for Interaction system is either Component or Interface afaik

[lunar sleet]

I mean cast works fine too

[frosty heron]

True, I try to keep it agnostic for interaction tho

[lunar sleet]

Fair

[lunar sleet]

I can never rmbr tho, do you need a ref to the door to send the msg?

Or the PC?

[frosty heron]

it can just be an actor right?

the target

[patent scaffold]

Alright I think I'm kinda getting the hang of this now, thanks! I was stuck on this for a while haha

[lunar sleet]

Yeah, but I mean for the Message interface call to actually send it, what do you feed it?

[frosty heron]

pretty sure u just need the object

[lunar sleet]

I swear, with interfaces I always think I got it and then I’m like wait no that’s broken 😀

[frosty heron]

Object -> Use (msg)

[lunar sleet]

Ah ok,

Makes sense

[frosty heron]

if it implement the interface then it will just run the event in the object, otherwise does nothing

[lunar sleet]

Right, so you avoid the cast but still need the ref gotcha

[frosty heron]

I don't think interface is a way to avoid cast :S but maybe that's just me

[dark drum]

How do I add a camera shake? I can find the play world camera shake but I only want it for a specific player character.

[frosty heron]

can prob avoid casting for super generic stuff like calling an event

but when you need to grab some variable, you will need to cast . no way around it afaik

[lunar sleet]

So you get the ref, cast to… actor?

Or wdym by this

[frosty heron]

Line trace, hit actor -> Msg? i think that's how it go

haven't touch bp for long time 😥

[lunar sleet]

Haha, well you’re touching cpp so that’s ok😀

[frosty heron]

I'm almost done with my loading screen and character screen

eventually I have to re-do inventory/weapon system lol

[lunar sleet]

Nice, stealing from Lyra still? 😀

[frosty heron]

Nah I can't interpret anything

but the loading screen was allright

[lunar sleet]

That seems to be the common consensus 😃

[frosty heron]

@dark drum this work maybe

[dark drum]

I think that's what I was looking for. Thanks. I also noticed theres a built in screen fade on the camera manager. o.O

[frosty heron]

Yup, been using it for years 👍

for my fake loading screen

but now I get semi non fake loading screen, so I get to say good bye to that node

[dark drum]

I've been creating a widget haha.

[frosty heron]

now I use widget to fade in and fade out for level transition

[tawny patio]

Hey guys I have this condition on the left on paperZD that will play the attack animation if their X velocity is more than zero, but in only applies when im going the the right direction and wont on left direction. To the right is how the sprite turns using rotation but not sure what condition to have the attack animation play as well when im going to the left.

nvm somehow changing the "more than" to "not equal" fixed it : P

[dawn gazelle]

Put an ABS between the X output and the >

[wild crater]

So you can use multiple variables on one input in BP to call the function multiple times (not sure how it works). Is there a way to make custom functions that also work like this? Cause when I try it on my custom function it doesn't work.

[dawn gazelle]

You mean being able to do something like this with your own custom functions/events?

[past compass]

Is it possible to change UDS (ultra dynamic sky/weather) with a widget in real-time?

Making like a menu screen and want to allow changing pretty much any variable of the UDS/weather system.

Not sure where to do this at tho , there’s a lot going on in the UDS plug-in

[wild crater]

Yes

[gentle urchin]

Not much dynamic if not

More like ultra static /jk

[wild crater]

The use case atm is that we sometimes use this but I'd like to add a validity check to it to remove warnings.

[dawn gazelle]

It only works for the "Target". You can't connect multiple values into the inputs of a function.

[past compass]

Lmaoo, I did figure it was possible. Just trying to discover how I’d change things from a widget

Would I need to cast to it? Or create an interface ?

[wild crater]

Ah okay that makes sense. Then I'd have to go and modify engine code for this, which isn't worth it. Thanks!

[dawn gazelle]

Seeing as it's a paid plugin, you likely won't find much support for it on this discord unless you happen to come across someone who has bought it. There is a discord listed on the product page and you might end up finding your answer there or at least be able to more likely connect with others that would be able to assist or guide.

My guess would be yes, it's likley possible, but as I don't have it, I wouldn't be able to tell you how you could :/

[past compass]

all good, i appreciate that, i did plan on popping in if my current idea(s) don't play out. going to try an interface / event dispatchers and see if that works at all

[toxic drift]

I'm trying to implement a double jump where if I jump one direction, and the second jump is in a very different direction, it's like a sharp immediate redirection and momentum isn't carried over. I put in a "Stop movement immediately" node which works fine enough for when I jump forward and then double jump back the other way, but when I double jump in the same direction I did the first jump it feels really jank and rigid. Is there any way I could possible set it so the "Stop movement immediately" node will only fire if I input a double jump with the analog stick pushed in a noticeably different direction fromt he first jump? Like say more than a 75 degrees deviation from the initial jump for example.

[obtuse geyser]

Need quick help, I want this icon to pop up on TestingPawn (G key doesn't help)

[toxic drift]

I imagine I would just have to set up a variable that when I jump it set's the directional value for the first jump, and then when the second jump happens run a branch to compare the two but I'm not sure exactly where or how or what function I would pull the directional values from in the first place. (Still kinda new to all this)

[sweet silo]

hi there how can i create some sort of letterbox menu widget, you receive mail and it shows up first as a list and you can look at the items as you select them
thanks a lot

[past compass]

just wanted to share my solution to this:

asked in the discord and was answered directly by the creator of the plugin, and he said "simplest method is to "get actor of class" on event construct" and this worked perfectly. no interface / event dispatchers needed. although, im sure one or both of those would also work, but this is much much simpler.

[dawn gazelle]

There is a listview widget. You populate the list using objects that you construct so they can have whatever data you need and you define a widget class to use in conjunction that the list view will display for you. Clicking on an item in the list gives you an event which you could then use to trigger more logic which also gives a reference to the object contained in that list item so you can pass the data to something else.

[heavy lion]

Say I wanted to return the value of the movement direction of a character inside a component, how would I go about doing that?

[sweet silo]

thanks a lot i didn't know about the list view widget

[heavy lion]

I have an Enum with moveLeft, MoveRight, MoveForward, MoveBackward.

[dawn gazelle]

Have a function set up in your component that you can call that then returns the enumerator based on the values you have within the component.

[heavy lion]

But im not sure how to detect the movement direction itself

I would like to determine if W S A or D were pressed. But I just cant figure it out

I obviously cant hardcode it.

[sweet silo]

what's the proper way of getting out of the widget when the interact button is clicked again ?

thanks

[lofty rapids]

usually you create the widget elsewhere then add/remove when you need to
so you don't keep creating it.

[dawn gazelle]

If you wanted to base it off of your direction input axis values, you could use something like what I did here to determine the direction - this is a bit more extereme in that it is determining diagonal direction as well.
#blueprint message

[sweet silo]

i've created it in the object i'm pointing at where should i create it if not here ? thains

[lofty rapids]

i usually put it in the hud, but ig as long as you can access it it doesn't really matter

[sweet silo]

hmm ok like all the widgets in the hud ? thanks

[lofty rapids]

well you don't want to keep "creating" it over and over you'll probably end up with a bunch of them

so creating them once in the hud is nice, then you just get the hud, get the reference and add / remove

[sweet silo]

but i want to create it only when i intereact with this object in particular

[lofty rapids]

well technically you just want it displayed then right ?

[sweet silo]

but yeah you are right i'd better do that

[sweet silo]

yeah

[lofty rapids]

right so when you create, promote to variable, don't add to viewport

then when you want to see it, get the reference, add to viewport

and when you want it to disappear, remove from parent

[sweet silo]

hmm cool so i should create some sort of a master widget where they all get referenced

[lofty rapids]

or you can use visibility

[lofty rapids]

right, which the hud is a good place for that

kind of easy to get from anywhere

[sweet silo]

yeah definetly but the hud is just a regular widget named hud right

or there is something called hud like a player controller or smth

[lofty rapids]

no it's in your override

[sweet silo]

oh ok !

[lofty rapids]

i mean yes it's a bp

but it's in the override as HUD

[sweet silo]

how can i acess it from the content browser ? or should i create a new one as a bp classe ,

thanks agian

[lofty rapids]

you create a new hud bp, then when you set it in the override as your HUD, it will load up

[sweet silo]

ok great thanks

found it

[lofty rapids]

yep HUD

add to viewport/remove from parent will reset the widget

[heavy lion]

@dawn gazelle That looks like what im after

[lofty rapids]

so you may want to use visibility instead

[heavy lion]

I am able to get the X and Y clamped to +/- 1

Now just need to figure out how to set it

[sweet silo]

what should i input as object here ?

i've tried a bunch but doesn't work

[sweet silo]

ok i think i got it

oh ok thanks a lot:

[heavy lion]

@dawn gazelle Sort of working! XD

It only ever sets it to whichever was done last however

Or whichever is last in the sequence

[dawn gazelle]

The only issue with what you have here is that your Y values will override whatever you set with your X values.
You'd have to do what I did and attempt to combine them, or use separate direction variables for X and Y.

[lofty rapids]

i feal like two seperate enum, will help you know if your going up/right, down/right, down, invalid etc...

[heavy lion]

Yeah thats what I was thinking. Two Enums, and a way of detecting which was triggered last.

[dawn gazelle]

If you do it based on whatever was last pushed, then you need to use something like the "Started" output from an Enhanced Input event, and that can directly set the appropriate enumerator based on the axis value, and the "Ended" or "Cancelled" output from the event can set the enumerator to None.

[heavy lion]

Might be easier to create a separate input action for forward and backwards and left and right???

Otherwise I have to determine which was pressed each time

[dawn gazelle]

It won't matter. You'll still get wonky behaviour...

[lofty rapids]

i mean with two enums, why would you have to figure out what happened last ?

you would just have an up/down, and left/right

[dawn gazelle]

If I press and hold W and then press S, one would expect "Backwards" to be the output. As soon as I release S, I'd end up getting "None" despite that I'm still holding W

[heavy lion]

@lofty rapids I only ever want one to be true. Cannot be forward and left at the same time for example.

[heavy lion]

May be able to solve that somehow

[dawn gazelle]

I probably mixed it up.. You may want to still use "Triggered" if it's continually firing, then just have it set the appropriate enumerator.

[teal nexus]

I have a silly BP question

I am doing this to offset where VR teleport arc is coming from (hand). So, this contraption above moves it 20 units on the axis perpendicular to the palm of the hand.

I'd like to do the same thing for other 2 axes

So I did it for Up and Forward vectors, then added all 3 and ... my teleport arc disappeared competely 😛

How should it be done, correctly ?

[dawn gazelle]

Did you add them all with the world location added to the vector?

Or did you add the vectors with their multipliers to the world vector?

[wild crater]

That's what I was going to ask as well

You wanna make sure you calculate the relative offset in each direction. Add those into one offset, and apply that to the world location.

[gentle urchin]

Cant you combine the axis input into a vector directly ?

[teal nexus]

hmm.. I think I added them to world location, then added the results together.

[dawn gazelle]

(WorldLocation + RightVectorMultiplied) + (WorldLocation + UpVectorMultiplied) + (WorldLocation + ForwardVectorMultiplied)
vs.
(RightVectorMultiplied + UpVectorMultiplied + ForwardVectorMultiplied) + WorldLocation

[wild crater]

Yea that would mean you would add the world location to itself 3 times on top of the other offset stuff

[teal nexus]

ugh

so, should it be this:

(RightVectorMultiplied + UpVectorMultiplied + ForwardVectorMultiplied) + WorldLocation

[dawn gazelle]

Yes

[teal nexus]

gotcha, thanks a bunch!

[crystal crown]

Why is my movement component not valid all of a sudden?

[wild crater]

Also consider whether it should be a component of/attached to the thing it's relatively located to. If it's always at this offset, that's probably the easiest solution. Or are you setting it just once while attached/as a component? (I'd think not as you're using world location)

[wild crater]

Well I'd just add the three vectors, normalize it, and then multiply it with the 20, but yes same result).

[teal nexus]

thanks, I'll try that too 😊

[wild crater]

Just some general advice, without being pedantic. Vector maths is probably the most useful maths to have a good understanding of when doing game development. I know it might suck, but I would recommend to just do some abstract exercises with it or test your own understanding of it by trying various things in engine and rendering all the steps/output.

[sweet silo]

hi any idea how i can make my vr hand collide with a box collision

the whole vrpawn is colliding

[wild crater]

You can make an entire game with just basic algebra and vector math.

[wild crater]

I've never done VR, but I assume it's like any other collision? Just make sure your VR hand has something that can cause overlap events. Or hit events, if that's what you're using.

[heavy lion]

@dawn gazelle I managed to solve it with a spaghetti junction like setup!

This works as I expect it to work

Both values reset to 0 when you let go of WSA or D so it resets the movement to invalid (Which is what I want)

Now I need to calulate look direction

[mystic edge]

Hey, im trying to subtract 0.1 from my float Hunger and return it. Only problem is, that I cant return it with the same name. Im new to UE5 and I tried using the _Set to variable option, but with that I cant use the same name. (Its a hunger system for a video game by the way)

[heavy lion]

Drag the out pin to the return node

Give the value on the return node some new name.
(NewHunger)

Oh wait

Drag hunger from the variable list whilst holding alt

That will allow you to set it

[mystic edge]

Thank you!!

[heavy lion]

No problemo

[lofty rapids]

you can also just drag it, and hit set

[lunar sleet]

Ask in #gameplay-ai

[keen ravine]

I have a button in a widget.
It should be enabled or disabled depending on a parameter inside the component of character.
Which option is better:

1. Bind to a property in the component (Widget binding)
2. Create an Event Dispatcher inside the component and bind to it? (Event binding)

[scarlet timber]

Event binding is more efficient but don't overthink it :)

[gleaming relic]

hey, im trying to change the tint of a widgets style via blueprint, how can I do this?

I got a reference of the widget and got it's style, but idk how to change the tint specifically

I've kinda figured it out but this just looks like a spaghetti way to do it

[dreamy mountain]

do ui elements go in firstpersoncharacter, firstpersongamemode or firstp[ersonplayercontroller?

[novel rock]

how do i make an multi animation selection by index?

[frosty heron]

@novel rock

[novel rock]

Thank you ❤️ ❤️ ❤️ ❤️ ❤️ ❤️

[frosty heron]

generally HUD

[dreamy mountain]

i dont have one called hud

[lunar sleet]

Make one

[marble tusk]

You could use either a set members in struct node, or set by-ref var to change a sinlge value in a struct rather than setting everything to itself

[young meteor]

Any idea where I can set a custom snapping value for UI elements?

In editor preferences I can see a bunch of options, but none seem to have the values in the first screenshot

(screenshot is from "Level Editor" -> "Viewports" section)

[gleaming relic]

Oh thanks

[steady night]

hey guys
im using On end Cursor over / OOn Begining Cursor Over *
https://gyazo.com/35c4398eaa744eacb82a110b9c7604a3

why is it acting like this :/

[hasty bay]

Hi,
I am modding a UE4.27 based game and was trying to add settings items to the game using the game native widgets.
The code in C++ is using UClass::FindFunctionByName to get the value and write the value.
Usually each settings panel used a c++ class that contained all these function.
I tried to create a BP extending the base c++ class and added functions to it but it seems the game doesn't use them.
Using x64dbg, I can confirm that UClass::FindFunctionByName returns null pointer and thus it doesn't get called.
So, my question is this, does UClass::FindFunctionByName works on blueprint generated classes and I am doing something wrong or it doesn't work like that?
PS, the uasset already contains the funcmap with all the functions correctly listed.

Not sure if this should be asked in cpp channel, since it is mix of both.

[scarlet timber]

I think thats a editor only function meant to be used by editor / editor utilities

[signal perch]

how do I change the font according to the language?

[hasty bay]

You can still call a BP function using call checked or something to communicate back but I think that one is for objects not classes

[frosty heron]

what game are you modding?

afaik the topic is discouraged/forbidden unless you have permission from the game creator

[hasty bay]

Payday 3. The developer is already cool with modding and encouraged it in Payday 2.
But the question can be asked without any modding references.

[hasty bay]

UObject::FindFunctionChecked finds a function in BP object if I understand correctly.

[whole ivy]

hello, first time asking here, i want to disable manual input but letting AI input goes through in my BP. it's for having the player at another location at the end of my cinematic.. i thought it should be simple but can't make it works.. thanks

[scarlet timber]

if it returns null then you are probably calling it with wrong params

[lunar sleet]

What is “AI input” ?

[naive stream]

For anyone who wants to sort array in blueprint and aren't afraid of creating a C++ class, I made a blueprint function library you can use:
https://pastebin.com/nWwbDV97

[lunar sleet]

You mean like FArray::Sort?

[naive stream]

exactly

[whole ivy]

here is the thing i am trying to do :

[naive stream]

which isn't callable from blueprints

[lunar sleet]

Well if you’re not afraid to use cpp, then you can just use that but I see your point 🙂

[naive stream]

they wouldn't have to write or use C++, just create a class

i could make a plugin but cba

[whole ivy]

the simple move to location node use AIcontroller to move the player, but when i disable movement input in the level sequence player it disable that movement too.

[novel rock]

I can instance and store a variable but how to I destroy it?

[lunar sleet]

Idk much about #sequencer but you might be able to remove the mapping context on your character or gate the functionality with a Boolean

[lunar sleet]

Just set it without plugging anything in it, it should start pointing at null

[novel rock]

I was able to remove from variable but how to i delet from world?

Although I don't see the Music Cue in the world outliner

[lunar sleet]

Remove what, you’re trying to stop the sound?

[novel rock]

yah but i feel like i need to delet it since i used a Create node

[lunar sleet]

Doubt it, but ask #audio for the proper procedure

[rose dew]

hellow

how should i do that ?

[modern radish]

any idea why this would only print updated values when click-dragging? not when I freely move the mouse?

I get the same value even if I move the mouse

[trim matrix]

Do u have it set to showing the mouse cursor?

@modern radish

[lunar sleet]

What does the warning say?

[modern radish]

yes

Have this on my player controller

[trim matrix]

do set input mode game and ui

instead of game only

[modern radish]

doesn't work either.. and that also breaks my game it looks like 😄

@trim matrix

[trim matrix]

try making it not consume input

[modern radish]

I have some click-drag functonality

[modern radish]

is that a setting somewhere?

[trim matrix]

should be on the node

[trim matrix]

uncheck the hide cursor during capture maybe?

[lofty rapids]

so it's not changing when you move it ? you should see it change then when you pause it will look like that that you have

[trim matrix]

but i'm uncertain if that would change anything

[lunar sleet]

Ok, so then why are you trying to use an actor reference to cast to whatever that is?

[modern radish]

that stops breaking the game, thanks! but the mouse position still only updates when I click

[modern radish]

exactly, it doesn't change when I simply move the mouse, only if I click, or click-drag

[lunar sleet]

If you click once and release, does it work afterwards or is it that thing where it doesn’t register at all unless mouse is down ?

[modern radish]

no, it won't work at all

[lunar sleet]

Seems to be a common occurrence

[lofty rapids]

did you set in the project settings to capture on click ?

don't know if that would matter but worth a look

[modern radish]

can't find that, where exactly? I can't recall

[trim matrix]

Edit>Project Settings

[rose dew]

i wanna take the variable from my BPC

[modern radish]

correct, only if mouse is down

[lunar sleet]

What’s this BPC?

Player controller?

[lofty rapids]

edit, project settings, on the left side choose input

[trim matrix]

or search up

[rose dew]

play animation of attacking

[trim matrix]

at the top

[lunar sleet]

What type of blueprint is it? Anim bp or something ?

[lofty rapids]

then you should see something like this:

worth a check

[modern radish]

this might be it

[lofty rapids]

ya should be fine ig

idk if that would even matter lol

[trim matrix]

it could matter

[modern radish]

I changed to be the same as yours but no luck lol

[lunar sleet]

I’ve seen this issue often but I can’t rmbr the actual fix 😅

[lunar sleet]

Show this whole execution thread pls

[modern radish]

it's inside a very large Controller BP

[lunar sleet]

Just that part not all of it

Like where is that, on begin play? What’s before it

[modern radish]

oh good idea, let me try that

[rose dew]

actor component

[lunar sleet]

Right so you’re trying to feed an actor into something that’s looking for actor component

There’s an onComponentBeginOverlap you can use instead (select one of the components in this bp like mesh, scroll down in details panel), and grab from other component and feed it that ref

[modern radish]

I tried this, both actually, they only update the mouse position (which is on tick to print), if I click or click-drag 😦

[trim matrix]

What's the flush input for?

[modern radish]

no idea, but doesn't change anything

[lunar sleet]

tested it and it works fine on my end

but hang on

why are you getting player controller

this should be in the PC

what are these shenanigans ? 😄

[trim matrix]

it should work nonetheless

[modern radish]

that doesn;'t work either

[trim matrix]

yeah

[lunar sleet]

I mean we should do it right nonetheless

[trim matrix]

something else is the problem

[lunar sleet]

try this

in that order

[trim matrix]

huh

won't that overwrite the input mode?

[lunar sleet]

I had to do that to fix a no focus on window issue when first starting the game

mind you mine was the have to click once to register

[modern radish]

I tried it, same results.. Even if I focus the screen before hand

[trim matrix]

yep...

[modern radish]

if this was a focus problem, it would start updating after I clicked the first time, but it doesn't.. it stops and prints the same number where it stopped

[lunar sleet]

show your tick again pls

and just to confirm, you're not doing multiplayer stuff right?

[lofty rapids]

when is the tick running ? in the controller ?

[lunar sleet]

it doesn't need the self target but that should work

[modern radish]

Yes, I tried running it here in the controlelr BP, also elsewhere, same thing

[lunar sleet]

nothing prints?

[modern radish]

no multiplayer..

[lunar sleet]

did you restart engine just for our collective sanity?

[trim matrix]

it should be running in there

[modern radish]

it prints, but only the same number

[trim matrix]

in the controller

[modern radish]

let;s try that, restart engine!

[lunar sleet]

I have this on tick and works np:

[trim matrix]

there's prob some weird option or something which u have enabled

[modern radish]

Must be that indeed

I restarted, but same results

[lunar sleet]

could be UI function related

do you have something handling cursor hover/click within UMG?

[modern radish]

I do have some UI stuff, let me try removing all

removed all the UI, same thing, I'm going mad LOL

[trim matrix]

[lunar sleet]

no OnMouseButtonDown or anything eh?

crazy

[modern radish]

that's all it prints if I dont click and move the mouse around

[lunar sleet]

what's your default player controller set to ?

[lunar sleet]

no, no, in world settings

or maps & modes

[trim matrix]

it wouldn't be printing i think

if it wasn't the right one

[lunar sleet]

you'd be surprised 😄

[modern radish]

on that map specifically where my game occurs

[trim matrix]

would i?

[lunar sleet]

the engine likes to throw all kinds of curve balls imo

[modern radish]

it's my BP COntroller

[trim matrix]

but not like that

[lofty rapids]

tick on pawn does the same thing ?

[lunar sleet]

I rmbr having some similar issue when I made my main menu level, but iirc that was just me having to add the show mouse cursor

[modern radish]

not sure how to test that

[trim matrix]

does ur mouse get captured at any point? Or disappear?

[modern radish]

my mopuse is functional for the game.. like I can click and cli-drag to interact with my objects

the only thing is that I cant get the mouse position on tick, whcih I wanted to do some parallax effect with the camera

[lofty rapids]

try to add an actor, and do it on tick, does it do the same thing or is your controller f'd

[trim matrix]

they would still need to do that through the controller

so there would be no difference

[modern radish]

🤔

[trim matrix]

🤔

maybe u could do that with some other node

[modern radish]

could this be related?

[trim matrix]

like get mouse on viewport

[modern radish]

that actually works!

it updates on tick

[trim matrix]

lo

[sweet silo]

hi there

[trim matrix]

l

[sweet silo]

what's the right way of doing that

i want to be able to close the widget and go back to normal when the playyer interacts again

[lunar sleet]

Well I was gonna suggest that but that’s for UI. It’s possible the old input is the problem based on this @modern radish https://forums.unrealengine.com/t/mouse-axis-is-not-captured-without-holding-a-mouse-button/431000
On my end I’m adding mapping contexts after that

[lofty rapids]

you have a show widget function, so make a hide widget function as well

[gentle urchin]

Isnt there a consume mouse on drag or smth

Which locks its position?

[sweet silo]

huuuuh sweet ok i'll try that

[modern radish]

Thanks, what do you mean by the old input?

[trim matrix]

there might be, but they've said their mouse doesn't lock

[lunar sleet]

It’s possible the old input is being loaded before all of that, breaking your regular mouse capture but 🤷‍♂️

[lunar sleet]

Like not #enhanced-input-system

[lofty rapids]

maybe this stuff is enabling disabling tick for some reason ?

[lunar sleet]

The system you’re using is deprecated

[modern radish]

Oh okay, my project started on 4.26

and i'm on 5.3 now

[gentle urchin]

I see. Couldnt tind the initial post. Is this during some drag operation or smth?

[lunar sleet]

Should consider switching at some point when good and ready

[trim matrix]

since that works it has to be just something with the pcontroller

[lunar sleet]

I strongly suspect the input system now tbh

[modern radish]

I have no idea what this EIS is or what it would entail to switch to it

[trim matrix]

a different input handling

[lunar sleet]

#enhanced-input-system it can be confusing at first but offers much better functionality and once it clicks it’s easy

[modern radish]

my only input in the game is the mouse lol

[sweet silo]

but how can i tell it that i only want the hide widget to close if it's not valid ?

[trim matrix]

uhh... wouldn't be so sure of that

[sweet silo]

and how can i do remove from parent if my widget is inside the show widget

here is my show widget maybe i'm wrong

[lofty rapids]

ya you don't want to keep creating the widget like that

[lunar sleet]

the main diff between the code he has and mine is I’m adding the mapping context AFTER all of that, but could ofc be something else

[trim matrix]

@modern radish but if u found that mouse pos on viewport works for u then just use it instead

[sweet silo]

ah damn

[lofty rapids]

you create somewhere like the hud, and then reference it

[sweet silo]

this is inside the hub

[modern radish]

I need to see if I can use that to create the camera parallax effect, yes. Thanks a bunch by the way, all of you

[lofty rapids]

you don't need that in the hud, just get the reference from your hud, and set visibility

in your hud on begin you just want to create and promote

so that when you get HUD, and cast, you can get the reference

[sweet silo]

and this is inside the object i'm intreracting with

[sweet silo]

ah ok !

[trim matrix]

in programming sometimes u just don't get why shit works

[sweet silo]

got it thanks

[modern radish]

Do you know an easy way to turn that into world space?

[trim matrix]

this prob

https://docs.unrealengine.com/4.26/en-US/BlueprintAPI/Utilities/DeprojectScreentoWorld/

[sweet silo]

but which widget should i promote ? a general one ?

[trim matrix]

note that it takes in the player controller so... It's not out of the question that it might not work for u

[sweet silo]

because it's asking for a widget class

[frosty berry]

Looking for the right node. I want to pas a number in and fire off that number of pins in order. So if I have a "node" with 6 pins and pass a 3, the first three should run in order. Thoughts?

[lofty rapids]

you create the widget you want to use, then promote to variable

the one you want to show/hide

[trim matrix]

@modern radish

[sweet silo]

ah but then i need to create a different one for each new widget 'im using? @lofty rapids

[trim matrix]

if not then i'll show u a very quirky way

[modern radish]

thanks, I tried it, but doesn't seem to print the right coordinates

unless there's some other math involved I'm missing

[lofty rapids]

theres also this

[trim matrix]

I'm afraid that won't work

[lofty rapids]

sux it works well

[trim matrix]

due to the previous node not working

[lofty rapids]

thats what i was wondering also

[modern radish]

correct, it doesn;t update

actually wait, I think the previous Deproject thing is correct

but I need to account for the camera position perhaps

[trim matrix]

maybe, but i think u also need to scale the mouse pos

by get viewport scale

[sweet silo]

like this i guess

[lofty rapids]

ya, and then when you cast to your hud, drag out from that and get the reference you set

then you set visibility, or add/remove it

[trim matrix]

@modern radish

[sweet silo]

ok thanks a lot again

but isn't it bad perf wise to have stuff declared like this ? like semi open all the time?

[lofty rapids]

ig you could invalidate the reference if you don't need it

[trim matrix]

calm down, ur not launching a space craft in the 80s

[sweet silo]

hahahah

true

my computer is in the 60"s though

[primal schooner]

Anyone know why OnHealthChangedEvent (the blue one) gets called correctly with NewHealth at 100, then it immediately calls OnHealthChanged_Event (the red one) and NewHealth is set to 0? Trying to initialize the health to 0 using the change event.

SideNote: this honestly feels weird anyway. The pattern I'm used to is you always have your change events, and an initialize function. And you init in initialize and you change in your change events. But in Unreal I've only seen people do it this way so that's what I'm trying.

[sweet silo]

and by the way why isn't this working ? what's the right way of doing it ?

[lofty rapids]

why are you setting has interacted to whatever it is set to before the branch ?

[trim matrix]

It has default value of true (i think it should be false)

[lofty rapids]

well if true set true, if false set false ?

idk if that's what you want to do

[sweet silo]

i've tried many combinations it was just the last one i tried

sorry
I just want to be able to get out of this widget by interacting again

[lofty rapids]

are you using has interacted anywhere else ?

[sweet silo]

but maybe it's impossible since i'm using interafaces

[sweet silo]

nope

[lofty rapids]

you probably want to flip the true and false comming out of that branch

[sweet silo]

yeah actually tha'ts my issue i guess i can"'t interact with the object again since i'm in ui mode only

[lofty rapids]

also on both branches your setting to game mode only

[sweet silo]

yeah i changed that since sorry

[lofty rapids]

you can try game and ui

[daring bison]

do you have a call setup somewhere for your event dispatcher?

[sweet silo]

ok thanks i'll try

[primal schooner]

what do you mean?

[daring bison]

You bound an event, something can call it

[primal schooner]

Yeah its being called right there

[daring bison]

Nowhere else?

[primal schooner]

doesn't appear to be, I have a breakpoint on the red event and its only hit once

[daring bison]

So what is the health changed signal for if you call the event directly anyway?

[primal schooner]

Ah I see what you mean. I do call it in code though I'm realizing that's not working either..

DECLARE_DYNAMIC_MULTICAST_DELEGATE_FourParams(FHealthChangedSignal, AActor*, InstigatorActor, UARLAttributeComponent*, OwningComp, float, NewHealth, float, DeltaHealth);
void UARLAttributeComponent::MulticastHealthChanged_Implementation(AActor* InstigatorActor, float NewHealth, float DeltaHealth)
{
    HealthChangedSignal.Broadcast(InstigatorActor, this, NewHealth, DeltaHealth);
}

i think I'm missing something pretty fundamental. I'm not sure how blueprint is supposed to know that HealthChangedSignal.Broadcast calls

oh its the binding right

[daring bison]

Anything that calls the signal will fire the event

[primal schooner]

Yeah, that makes sense. But in this case, OnHealthChanged should only be called once because i'm only changing the health on initialization

and the initialization event, is sending 100

but its being received as 0

[lunar sleet]

Where is this onHealthChanged being called

[primal schooner]

hmm.. does blueprint have a callstack?

or does it show me where something came from?

[lunar sleet]

You don’t know where you’re calling it from? Ctrl+F hit the binoculars and search

[primal schooner]

well the only call in this blueprint is that screenshot

[lunar sleet]

That’s not a call

[primal schooner]

oh i see

[lunar sleet]

Show where you’re calling it

What you have in this bp are a bind to a dispatcher event and the custom event that’s bound to it.

The call that triggers the bind is happening somewhere else

[daring bison]

Is this not a call to the event?

[primal schooner]

yeah that's the only one, sorry I'm dstracted because I just fixed it and the fix makes no sense

sec

Okay so that's all the references

I had that just sitting out there in another blueprint

when I remove it, the hp updates properly

[daring bison]

wtf

[primal schooner]

how on earth could that thing that's not connected to anything cause this problem

[lunar sleet]

Ooh I missed that. What’s the point of doing all the binding then?

[daring bison]

Restart UE

A lot of things are fixed that way xd

[primal schooner]

its updated from code. i have an attribute system that can sends messages from code

void UARLAttributeComponent::MulticastHealthChanged_Implementation(AActor* InstigatorActor, float NewHealth, float DeltaHealth)
{
    HealthChangedSignal.Broadcast(InstigatorActor, this, NewHealth, DeltaHealth);
}

[primal schooner]

haha okay

[daring bison]

I get a lot of compile errors that dissapear after a restart

Curse of a bp only game I guess

[primal schooner]

btw, what is a good time to do initialization for things like this? Is BeginPlay usually a good spot?

[novel rock]

Is "Is Valid" like If(null)?

[daring bison]

That wholly depends on your game

[primal schooner]

okay

[lunar sleet]

The opposite

If != nullptr

[daring bison]

Personally I like to avoid begin play for most things init because its an event and not a function

harder to bugfix stuff imo

[lunar sleet]

I mean it works for some things but it doesn’t have a reliable trigger timeline, so for some things you’ll need to be more specific

[primal schooner]

Well since I'm in an UActorComponent, and also its replicated, I was debating between InitializeComponent BeginPlay or ReadyForReplication

But I think in this case.. BeginPlay is probably safest..

though honestly maybe I just expose an Initialize function in my component that just fires a changed signal for every attribute, and the owner can call it when its ready to initialize

[gentle urchin]

!Null && !bMarkedForDestruction

[lunar sleet]

Yeah good point, forgot about pending kill

[whole ivy]

i've finally resolved my problem of disabling and enabling input during my cinematic, this is the final code if that may help anyone

tldr, disabled input for the Playercharacter then re enabling it after a delay that is equal to the length of the level sequence

[lunar sleet]

So basically what I initially said

I did correct this to removing mapping context mind you

Since that’s more accurate with the new input system anyways

But glad you got it solved!

[whole ivy]

i think so... i was not familiar enough with the disable/ enable input node to really understand what you meant then hehe ... but that's it yeah x)

i will read about mapping context and change to that later

[lunar sleet]

You’ll need the EnableInput again if you ever try to add input to a regular actor (not character)