blueprint

[slow pewter]

Hey guys any Way to Refresh all Nodes on all Selected Bps?.., or Can i only using it for Opend Bp's?

[odd ember]

isn't there an option for this in one of the menus?

probably something you can google either how

[slow pewter]

Yes for the Opend One

but not for More than this one

[odd ember]

.

[gentle urchin]

this happens if your second char is not child of the same baseclass provided as type in the variable decleration

[odd ember]

;

[maiden wadi]

|

[slow pewter]

½

[slow pewter]

Yeah found an Easy Plugin for it, :v

[lusty rune]

hi
My game have multiplayer and health system, so you can die. You can connect to a "host" player, but the "host" cant die

[trim matrix]

why i cant put nav mesh bounds higher than 48000 units z?

[lusty rune]

overall the host cant die the others can

[odd ember]

OnDamage > IsNOTHost > TakeDamage

[lusty rune]

i dont know what do you mean

thats the multi system

and the host cant be killed

[odd ember]

I don't know what a multi system is

I just told you how you can make the logic work

[gentle urchin]

You can check parent classes up in the right corner

So you want a common parent class that has posess functionality in this case

[grim peak]

Any chance of sending screenshot parent classes right corner? Do you also mean if I have a ThirdpersonCharacter_BP (parent) .... that I always need to make duplicate and make it child blue print class? is this why its not shwoing up in the list

[gentle urchin]

Thirdpersonchar has Character as base class,

[pulsar valley]

Hey guys, newbie question: suppose I have the reference of a Scene Component at runtime. How can I add a new component to it, as a child?

[gentle urchin]

Use character instead of thirdperson char for the array

[earnest tangle]

In actor BP's you can call nodes like "Add Static Mesh Component" and such, but outside of actors not sure. It's possible in C++ but for some reason creating components at runtime is a bit limited in BP's

[pulsar valley]

Yeah that is actually my scenario, to my surprise I can't find an easy way to create new components and add them to other components outside Actors...

[earnest tangle]

Is there some particular reason you need to add components on the fly like that?

[pulsar valley]

Yes, but it's kinda long to explain. It's for a dynamic attachment/detachment system

I just noticed that I might get away with it using a "Construct Object From Class" node along with an "AttachComponentToComponent" node

[earnest tangle]

iirc that won't let you construct components for some reason :P

There's two ways you could possibly work around this in blueprints

1. Attach actors instead of components
2. In the actor where you're attaching things into, give it a function which creates the component you need - this way you can set the component creation nodes into the actor, where you should be able to use them

in C++ it's fairly easy tho - you just NewObject<WhateverComponent>(OwnerActor) and RegisterComponent() and/or maybe one more call if it's needs to be attached to something specific

[pulsar valley]

The second approach might be right for me 🤔

Yeah maybe I can also add a C++ function that does it actually, good idea

Thanks for the suggestions! Back to work! 😄

[earnest tangle]

👍

[wicked magnet]

Is there a print command in Blueprints that lets you use one node to do something that in code would look like
print("Found variable" + [varname] + "and current speed is " [speed variable']

I generally just dump the variable info into print like here, or use multiple Print nodes, but have been looking for a more efficient way

[earnest tangle]

@wicked magnet you can append strings, that's pretty much it.. or you can use the format text node which supports foo {placeholder} bar and produces pins for the placeholders

[swift sphinx]

when i press (X) i want to lock/disable character movement but make them able to move the camera with mouse to look around and when i press X again enable movement, how?

[wicked magnet]

Ah, thanks to both of you. I have seen append, but Format Text is closer to what I was looking for!

[earnest tangle]

Yeah format text is really handy, and since it produces Text values it works with localization too :)

[maiden wadi]

I was about to mention that. 😄

[maiden wadi]

Generally I would recommend not doing this in a flipflop manner but checking and inverting a boolean that regards movement. Secondary state values like the flipflop's boolean is just going to complicate things, introduce possible bugs.

[haughty temple]

^

was about to make a boolean version as well to show how id perfer it

[maiden wadi]

Yeah, pretty much what Jojo posted, but switch the flipflop for a "GetMovementMode == Walking, then disable, else enable".

[swift sphinx]

ty for help 🙂 got it working with a bool

but im facing one problem

i want to be able to rotate camera WITHOUT moving the character mesh but how :S i read on google using "Root Component -> set Absolute" :S but that did not work

[maiden wadi]

Sounds like you're just looking to disable the character's use of Yaw for control rotation.

[swift sphinx]

this in the "springarm"?

[maiden wadi]

Nah. Character itself. You still want the camera to use control rotation.

Something along these lines I imagine.

Not in a project capable of testing it at the moment.

[haughty temple]

yeap thatll work

[swift sphinx]

yea ty for that 😄

hmmm can i stop the animation in BP?

[icy dragon]

Depends on how you want to stop it.

[swift sphinx]

if i run and then press X the character stops but animation "run" keeps on going

[white elbow]

Does BeginPlay event refer to simulation start or when an object gets spawned?

[icy dragon]

Sounds like a state transition not getting triggered.
Check your anim graph, and see if the transition rule is right.

[swift sphinx]

so i cant stop the animation via the character bp?

[icy dragon]

FWIW you'd better end up looking at the anim graph's transition rule

[small halo]

https://gyazo.com/76d25efb0bd419b0c530c74eb35a2624

begin overlap is for when ur out the box and then enter it

is there a node for if u spawn in the box

[keen dune]

I'd like to make a BP that would spawn an actor in random (10) location, after being touched by the player. Collisions are on point, cause my actor is disappearing when in concact within a player, but I don't know how to set those spawn locations... i cannot put TargetPoints into the actor's BP, so what's the other way to do it?

[maiden wadi]

GenerateOverlapEventsDuringLevelStreaming or something. Should call overlap events at spawntime.

[maiden wadi]

Are these locations PlayerStarts?

[small halo]

do i set it to true on begin play?

[maiden wadi]

Should probably be a class default

[small halo]

this?

https://gyazo.com/eb045fcbb95fd9332b9281957bc13d85

[keen dune]

these are TargetPoints, i can copy them to level's BP, but not to my actor's BP

[maiden wadi]

As in TargetPoints just dropped into level?

[keen dune]

yup

[swift sphinx]

i added a "isLocked?" bool here :S but it is not working

@icy dragon and then in character BP i cast to animBP and set that bool

[sleek wadi]

Hey all. I am working my way through a tutorial on running a crowd simulation and towards the end it copies the target location to the character under a setting of what looks like Default > Target Location. However, I cannot seem to find the Target Location on my character when following along in 4.27. Would anyone happen to know what became of the Target Location? Thanks!

[faint pasture]

Think in rules. What is the rule for the character capsule/mesh orientation?

Is it ALWAYS aligned with the control rotation / camera, ALWAYS aligned with movement, or sometimes either?

Take Elden Ring for example, the character is always aligned with movement except when locked on and not sprinting.

[onyx violet]

is there a good way to store/keep reference to a list of variables other than just making a lot in a blueprint class? just wondering if there's anything like a variable library

[earnest tangle]

Kinda depends on what sorta variables we're talking about

[onyx violet]

transforms specifically

[earnest tangle]

You can create an array which allows you to save a list of things in a singular variable

[onyx violet]

maps of transforms

is it possible to make an array of integer-transform maps?

[earnest tangle]

You can't nest maps into arrays directly, but you can create a struct which contains your map, and make an array of those structs

[late cave]

2D arrays can only be faked with structs, I think 😦

[maiden wadi]

I think that the important question is whether you need this data to change during gameplay or not?

[onyx violet]

no it doesn't have to change, I have a variable that will change but I want to be able to access a list of these integr-transform maps so I can use them to change the variable that is referenced for gameplay

[maiden wadi]

Then you're most likely looking for Data Assets to store it in. You can globally access them from anywhere.

[onyx violet]

ok i'll look into those, thanks

[late cave]

Or a Data Table

[maiden wadi]

I'd probably to a DA just out of the simplicity of not needing FName conversions.

[copper steppe]

So, I've started working with Procedural meshes, I know we can slice them, but how about cutting a shape into a mesh? For example cutting the shape of a gun into the middle of the mesh?

[faint pasture]

On the topic, which format would you suggest for storing and editing a BUNCH of structs? That is, tilemaps. 1 struct = 1 tilemap, and I'd like to make an in-editor or in-game tilemap editor. Data tables are where we're at right now but they're a pain to work with for building an editor.

[maiden wadi]

Hard to say. Sounds like you're also wanting users to be able to create them?

[faint pasture]

Nah not really, just gotta make it zoom zoom to create for us, and would like to do it in the simplest way possible

I'm looking at a custom editor mode but that gets gnarly quick

If I could save to a data table or data asset in game then we could just make a map for making them, I could easily whip up all the stuff in game context

Like if I could instead of SaveGameToSlot, have a MakeDataAsset or AddDataTableRow, i'd be sitting pretty.

[maiden wadi]

Personally, I'd probably consider saving them by name and making the actor keep a savegame object loaded and reference it for it's data.

I'm not sure I'd even bother with the DataAssets or Tables. If you could access all tilemap names you've saved, I imageine it'd be easy to make an editor widget or similar to pick a tilemap to load, and save.

[faint pasture]

The problem is we have to be able to tag them. It's for WFC procedural generation so it's more like "Here's the base map example (Desert, Jungle, Island, etc), here's the subexamples, (TownSmall, Cave, MilitaryBase, ShipYard, etc), and during map generation, we go like "OK we're making Desert map 5, that's a Canyon map filled with small camps and a couple caves, with Desert and Bandit theming. Next level is Island map 1, that's a Jungle Island filled with large camps and a military base, with Jungle and Military theming".

the definition of one of the 25 levels is a list of possible tilemaps to use for WFC generation.

Could use the names idea tho maybe.

[maiden wadi]

Still fairly easy. I save my game data similarly. I have two SaveGameObjects, one is the actual game data. Has functions and can run through all game assets to collect what it needs from a single call. Another is an indexer. I store savegame names along with other pertinent info like saved time, display name etc. You could easily save the tilemap names along with some other info like tags or FNames.

Indexer is basically a SaveGameObject with a single array of data that it is designed to parse through.

[faint pasture]

Does shipping a savegame feel gross or is it aight?

IDK how savegames are handled in a shipping build, do they go to user data or only new ones?

[maiden wadi]

No different than shipping a data asset I imagine. Though to be fair in this regard, if you manage to write to a data asset from editor, it might be a lot easier to manage from a development standpoint.

[faint pasture]

Thanks for the info, that might be a good stopgap anyway. It'll depend on where it ends up, I'd hate to have someone clear user local data for a game and now half the game is gone lmao.

"I deleted the savegame folder and now the game crashes"

[maiden wadi]

Haha, fair enough. 😄

[undone willow]

what does it mean if my blueprint only works when it has breakpoints on it? 🤔

I have a function that makes my character stop wallrunning after 2 seconds, and when i put a breakpoint on it, it works perfectly, character jumps off after 2 seconds.
But when the breakpoints are disabled, my character just keeps running for infinity

[maiden wadi]

That's an odd one. Haven't seen that one happen before.

[gentle urchin]

Need to see some code

If we were to assist in any way

[undone willow]

the above one is on tick

the second is the function, it works when I put a breakpoint on the "right wall jump" function

@gentle urchin 😬

[gentle urchin]

May i suggest for the sake of sanity to move it from... tick... to something like jump?

Sounds better suited for this

Are you sure its the wall jump having an issue btw ? Like if you simply disconnect the timer, does it work then?

And what error are you getting

If it just keeps on running its because youre stuck in the start timer loop

So resetting the timer handle happens without resetting the initial condition for reaching this point

Atleast thats my theory^^

[undone willow]

but why does it work with a breakpoint? :0

[gentle urchin]

Whatever condition you got manages to reset

Race condition in other words

[undone willow]

oh so basically the condition never has time to be false

[gentle urchin]

Yes along those lines

[undone willow]

no errors my character just stays on the wall instead of jumping, you can see a slight blip in the trace it leaves but it stays on

[gentle urchin]

Sorta need to see more of the logic before i can help you better if the above was not sufficient

[undone willow]

hmmm

the tick is very big

[gentle urchin]

Just the related branches

But really

Move it to on jump

Solved 🤓

[undone willow]

on jump?

[gentle urchin]

Whatever you press to wall run

[undone willow]

but then he will only jump off the wall when i manually jump off the wall?

he wallruns when in the air close to a wall 😬

[gentle urchin]

Ah

[undone willow]

a when falling kind of situation

[gentle urchin]

So the trigger for wallrun is on tick

Right

But your branch

Should rely on actually landing

[undone willow]

yea

[gentle urchin]

Before being able to trigger again

Timerhandle doesnt ensure landed

[undone willow]

i see

[gentle urchin]

So timer triggers after 2 sec

Then he should not be able to wallrun untill he has landed,

So i guess isFalling could perhaps be used

[mild crystal]

hi i enable root motion but isnt workinh

i play animation but my caracter isnt moving

[trim matrix]

Hi

How do you provide inputs when writing an automated functional test?

[odd ember]

BP allows for functional tests?

[wicked magnet]

@faint pasture thanks for your help with my question about controlling multiple players! I was able to execute it today fairly seamlessly, where I can switch between whatever amount of playable characters are setup on a map. What really helped the most was realizing I needed to make the array a Pawn type. Initially I was trying to create an actor variable, unable to possess, and then checked what you wrote and saw you mention needing to use a Pawn variable.

[gritty trout]

Whenever I spawn one of my NPCs on a spawn point actor, the NPC stays floating in the air and the behavior tree never activates

If I spawn a regular object actor it will fall to the ground and act normally

[thin panther]

Do you have them autopossessing an ai controller

[gritty trout]

Does this work?

[thin panther]

No

Look in the setup of the actual pawn

In the details there should be options for autopossession

[gritty trout]

Oh I see it

[thin panther]

Changed to placed in world or spawned

[gritty trout]

Spawned fixed my problem 👍

[thin panther]

Neato

[stuck folio]

Hey Guys.
Can I listen for an objects destroy event? I need to run a function in my level blueprint when an object is destroyed'

[quartz mural]

Maybe have an Event Dispatcher that triggers when the object is destroyed?

Then, just have anything that needs to be aware of the destruction have its own listener on it.

[trim matrix]

Yes but how can I input my character during test

[slender idol]

hey, if I click the value fields of Rotation, the values change randomly! I'm trying to set it to some specific values but every time I click on one field the other 2 values will change without my input. This is happening in a data table.

[lament geyser]

Does anyone know where i can find this BP, no matter what i type i cannot seem to find this function ?? https://docs.unrealengine.com/4.27/en-US/BlueprintAPI/EditorScripting/DataTable/FillDataTablefromJSONFile/

[maiden wadi]

What numbers are you trying to input?

[slender idol]

"90", if I put "0" nothing changes but once I fill X axis with "90" the others change values randomly if I click their fields

Z value selected

y value selected

and if I unselect they change again

[icy dragon]

This happens with Control Rig vectors, but the difference is much smaller than that.

[maiden wadi]

This is likely an issue with entering 90 into Pitch.

[icy dragon]

Not sure if that's even because of float imprecisions

[maiden wadi]

Rotators and their surrounding functions do some weird ass shit around 90 and -90 pitch. Generally gimbal locking, but some of their functions really break down.

[slender idol]

is there any work around?

[icy dragon]

Similar thing happens with Control Rig vectors, but the deviation is only in a fraction, much less than that.

[maiden wadi]

That is floating point error. This is more likely the rotator trying to correct itself.

[icy dragon]

If that really boils down to FRotator, then there's probably no workaround, but not to set exactly 90 and -90

FRotator is a weird beast to handle, unlike the FVector sibling.

[slender idol]

I mean its just unusable lmao even if I enter some aproximate floating point values near 90 it still jumps to random values.

[dawn gazelle]

It's not meant to be used in standard blueprints, probably only in Editor Utility and Editor Utility Widgets

[odd ember]

can you show me this functional test? because I've never seen this in BP

apparently this is the way to do it: https://docs.unrealengine.com/4.27/en-US/TestingAndOptimization/Automation/FunctionalTesting/

[maiden wadi]

They're not random. They're corrections. Your values aren't actually different if you look at the direction they're pointing.

[odd ember]

never figured that UE would have BP functional testing

not sure why either

[slender idol]

so I should just try and use the corrected values?

checking it in game its definitely at the wrong angle

[maiden wadi]

Case. I took your values and printed them in their directional vector.

[trim matrix]

Sure, send pm to me

[odd ember]

@trim matrix I found it, I would look up a tutorial

[gentle urchin]

Ohh, cool

didnt know it existed!

[trim matrix]

I saw it but it is saying noting about how to give input during test

[faint pasture]

What are you trying to do? What do you expect pitch outside of -90,90 to mean

[echo salmon]

Hello any idea why i get black bars when i try to blend the camera with my target?

[faint pasture]

aspect ratio?

[echo salmon]

Of the camera actor ?

[faint pasture]

of whatever camera you're setting the view target to, yes

So how do plugins work regarding distributed development? I got a plugin from marketplace and added to engine, what happens on my buddy's computer when he tries to open the project?

LE Standard Library to be specific

[dawn gazelle]

Depends if you have the plugin as part of the project files or as part of the engine files I believe.

[eternal jolt]

Quick question - my spline mesh component doesn't follow it's parent when it should be auto-attached, it stays stuck where it is. It's set to moveable. I feel like the fix for this is easy, it's just been a while since I've done spline stuff 😂

@faint pasture They need to also have the plugin either in their [Engine fodler]/Plugins/Marketplace directory, or in the [Project]/Plugins directory. Don't do both though, that can cause issues. Should only be in either one or the other (there's no difference functionally)

[faint pasture]

Aight so just copying from engine directory to project should suffice? I'll test that. Only ever worked with plugins on a project level, don't like them in engine

[eternal jolt]

I prefer project too. But don't copy, do cut/paste. You'll have issues packaging if it's in both

[trim matrix]

so I'm wanting to recreate the same dash of jett from valorant, it gives a dash to the sides can anyone help me?

[icy dragon]

Which part do you want to help with? The movement? The visual effect? The animation?

[grand valve]

I know pure functions are executed once for every Non-Pure node that calls them. But if do something like this, Im just doing the processing part (Calculate Surface Area for Static Mesh) one time right..?

[trim matrix]

just the side dash move

the effects and animations I already have ready

I just want to do the side dash in first person

[torpid hound]

Yep

[grand valve]

Thank you!

[trim matrix]

can you help me?

[icy dragon]

@faint pasture can you step in? I'm near sleep to help lol

[trim matrix]

sorry

[faint pasture]

IDK anything about pulling off a dash in BP, havn't got to that stage with our game

[eternal jolt]

Actually nvm on my spline question I think I know the issue lol

[trim matrix]

ok, sorry

[icy dragon]

If it werent night time in my time zone and near sleep, I could've cross check my project for the dash :(

[trim matrix]

ok sorry to disturb

[faint pasture]

You can try turning friction and gravity really low, launching character, waiting a bit, then turning friction and gravity back up

that'll be hacky but it'll work. If it's a multiplayer game though, I'm gonna have to stop you right here lmao

in MP it's totally a different animal

[trim matrix]

It's not multiplayer, it's for a school project

[faint pasture]

Then yeah i'd do it like i said

[icy dragon]

Ouch, I hope it's not that worse for just replay replication

[stuck folio]

That was a great advise. Thanks. It solved my problem

[grand valve]

@trim matrix something like this should work?

[faint pasture]

Use launch character instead

if it's ACharacter

[trim matrix]

OHH ok got it, thanks, I'll try to use

[grand valve]

Why launch? Launch technically changes the movement mode and stuff. An impulse is just a burst of additional speed to the character movement component. Should probably be safe for multiplayer too as long as the event is called on the server.

[trim matrix]

yeah not works

[faint pasture]

How big of an impulse did you try?

[grand valve]

yea crank up that DashPower 🙂

[trim matrix]

it's at 500

ok i understand how it works

@grand valveThank you very much

@grand valvecan i repay you in some way?

[grand valve]

Help someone who needs help in the future 🙂

[trim matrix]

ok i will help

[iron raptor]

Heyo. Anyone know how to get every object in a scene parented to a blueprint like this? Trying to follow a video on how to make randomized level streams, but can't seem to figure this out. The video is not really a tutorial so he doesn't explain anything in detail and I'm very confused. Never programmed before.

The parenting is necessary to get the rooms snapping to each other

This is the video: https://youtu.be/bSWu7oTwkZs
He has exactly what we need for our game

[trim matrix]

calm down, I can't quite understand, do you want to get all the objects in a level?

[maiden wadi]

GetEntranceAnchor and call GetAttachedActors

[iron raptor]

So basically, the "anchor" blueprint is what the other room that generates will snap to.

[iron raptor]

How do I do this?

[iron raptor]

and because everything in the room is parented to the anchor the whole room moves together making it able to be rotated together when it snaps

The video explains how it works really well but not so much how to set it up

[maiden wadi]

Not sure. Depends on your EntranceAnchor thing and where you have a reference to it and where you need to get it.

[iron raptor]

Sorry to come in here with such a loaded question, but I'm not sure where else to go

[maiden wadi]

Okay. Start with where you need those references in. Where do you need to array of attached actors?

[iron raptor]

I just want that exact system he has in the vid and I have nooo idea how to set up some of it. I downloaded his project and of course, it's all broken in UE5

[maiden wadi]

Oof. Really do not advise using that for learning.

[iron raptor]

Yeah, I just thought I'd look through the blueprints, it didn't really help me

I've deleted it, and started from scratch

[maiden wadi]

UE5 is unstable, and really not useful to anyone who isn't well versed in engine programming to fix some of the instability. I'd really recommend spending some time on 4.27.2 if you are interested in programming.

[iron raptor]

Oh... 😅 We kinda already started and have a semi functioning game. We are both entirely new to programming

But randomly placed prefab levels are essential, since this is a roguelike. Like the way Binding of Isaac generates rooms except linear

[maiden wadi]

I wonder if Prefabricator has made it to UE5 yet.

[iron raptor]

Is that a plugin or something?

[maiden wadi]

Yeah. Basically allows you to create preset "prefabs" in the editor and save them and then spawn them at will. It has a bunch of nice randomization functions. Allows creating a fully procedural level with nothing but a single integer change.

[iron raptor]

Oh! I'll look into that and see if it's available. Thanks!

nope not for 5 yet

As for my initial question. I need everything in the scene to be parented to the entrance anchor. But when I do "add to", it doesn't appear on the list.

[floral condor]

I'm using a blueprint of the base class Object as a handy little NPC task management tool so that they follow daily routines. I'm finding my self needing to use delay nodes a lot and I can't since theyre not available for objects. Should I make them actors? Each NPC might have 1-10 of these objects and there might be up to 25 npcs on the screen at once. Would switching these objects to actors be a big performance hit? If so is there some other way to achieve a delay node in the object class?

[faint pasture]

You can blueprint UObject? TIL

I suppose I never tried it

[dawn gazelle]

Probably sounds like you might want to use actor components rather than objects?

[faint pasture]

Any reason you're not using the AI stuff?

tasks etc

[dawn gazelle]

or that ^

[faint pasture]

Or if you wanna keep it simple, make some sort of a schedule structure or component

there's no reason to need delay nodes, just have some function for "Hey, it's 3:00, what should I be doing?"

maybe every ingame minute or hour the AIController looks at the schedule and determines what it wants to do

ThingToDo = element from ScheduleArray with closest time to CurrentTime without exceeding CurrentTime

[earnest tangle]

@floral condor you can use delays and such in UObject based actors but you need a C++ baseclass where you override GetWorld - otherwise you'd probably need to make them actors yeah. You can inherit them from AInfo which is meant for invisible "manager" actors

(the reason delay and things like spawn actor don't work in UObject based BP's is they need a world, and the default UObject GetWorld function requires you to override it to ensure blueprint based ones get a valid world)

[faint pasture]

What does AInfo have that AActor doesn't? havn't tried that

[earnest tangle]

iirc almost nothing, it just hides a bunch of properties from the details panel :D

[dawn gazelle]

yeah it's effectively an actor that doesn't have a transform.

[faint pasture]

how tf

isn't transform in AActor? or does AInfo have a different parent

or does it override the getters

[earnest tangle]

It just hides the transform from the details panel :P

UCLASS(abstract, hidecategories=(Input, Movement, Collision, Rendering, "Utilities|Transformation"), showcategories=("Input|MouseInput", "Input|TouchInput"), MinimalAPI, NotBlueprintable)

that's mostly what it does

although I do notice it says "NotBlueprintable" so it might not actually even be inheritable in BP's lol

[dawn gazelle]

You can inherit them in blueprints. You just can't make them directly in blueprints.

[earnest tangle]

Ah right

yep lol

[onyx token]

if i have a blackboard that contains a value called "Target Actor"

And i want that target actor value inside a task

how do i do that?

like-

this can't be it

this seems wrong

[faint pasture]

Why does it feel wrong? Blackboards are meant for loose coupling

[onyx token]

wait, so do i name the Key "TargetActor" and it just... works?

no referencing? No casting? Nothing?

is it because the task is getting played inside the blackboard so it knows which one it is?

[floral condor]

hey thanks a lot man

[faint pasture]

Something has to set the key but yes.

[vast ruin]

is there some special way to return a reference to a struct from a C++ UFUNCTION to be used with blueprints? I use the UPARAM() tag, when I set a variable in BP to the return value of the UFunction and edit the members it does not update the original struct returned by the UFUNCTION().

[onyx token]

i can't get it to work
pls halp
I have this value Target Actor. And that is being filled with my player, thirdPersonCharacter.

I know this, because once the AI detects me, it runs towards me using the TargetActor Location as a MoveTo.

Right now i'm doing the "Block" task.

and no matter what i set the TargetActor to, even if i call it "asdfasdfasdf" it always spits out "NpcActor" - aka - itself.

[faint pasture]

@onyx token Show how you're setting it

[onyx token]

hang on

better resolution

[faint pasture]

@onyx token Is the npc perceiving itself?

[faint pasture]

What do you mean by call it asdfasdf? Actor name in outliner?

[onyx token]

umm not as far as i've set... unless the standard blackboard task of "MoveTo" has like a "NpcActor" for the original location...

[onyx token]

yea

this on the left

whatever i name this, even if i name it like the Blackboard key, or asdfasdfasdf it always just spits out "NpcActor"

[faint pasture]

That's the variable name.

[onyx token]

yeah i thought in order to get unreal engine to realize i want the blackboard key - i need to name the blackboard key variable in the task exactly the same

[faint pasture]

Display name of the object will be like classname_number

[onyx token]

[faint pasture]

Key name is the key...name.

A blackboard is just a map/dictionary sorta

Key = "TargetActor"
Value = whatever you set it to

[onyx token]

okay... so if i wanna get the blackboard key value into my task, how do i do it?

[earnest smelt]

Hey, im trying to make an animation on my character controller where if the player press F, the camera will rotate 180 degrees on the y axis. Timeline makes it look wonky, ive tried childing a camera actor where ive got a script that swaps the camera controller with the actor (actor wouldnt stay childed, but everything else worked) and im clueless now as to how to solve this problem >.< Ive goot screens and all so if anyone can help me through DM's, that would be much appreciated!!

[onyx token]

if you're using the third person character controller, you can use the "OrientRotationToMovement" boolean that comes with it

[faint pasture]

What is the data type of this variable?

[onyx token]

Object with the base class Actor

[earnest smelt]

im using first person... T.T

[onyx token]

use third person and place the camera inside the actors head
↑ don't do that

[faint pasture]

Depends on how you're driving your camera but could just add 180to control rotation yaw

[faint pasture]

Can an object be used as a key? If you're setting the value by name, get it by name

[onyx token]

i don't know how to get anything with the task... Like - i can't just blankly do get ai controller because which one am i addressing?

if i have 100 Npcs in my game...
and a reference to "self" doesn't exist in "Controlled Actor"

[earnest smelt]

do you have any helpful links to that or videos? u see im not very sure how to do that ;-;

[faint pasture]

@onyx token I think you're way lost. Each npc has its own copy of the blackboard. Some tasks write to it, others read from it.

[onyx token]

sure

[faint pasture]

Npc writes TargetActor to the blackboard then later can read it for the MoveTo logic

Your key when writing it is a name, you should use that same name as the key for reading it

[onyx token]

so which blueprint node takes a key from the blackboard and lets me read it inside the task?
I need the TargetActor to figure out if it's attacking right now so i can react to it

I want my Npc to block when my player, or any other attacking.... dude... is hitting

[faint pasture]

Get blackboard value as actor

You already have that node you're just plugging some object into it instead of a name

[onyx token]

but it needs a key tho...

also this doesn't work
https://cdn.discordapp.com/attachments/847253861403197471/953076896810270740/UE4Editor_VBQ3vBVcYy.mp4

[faint pasture]

@onyx tokenHave you tried looking at what that key struct is?

[onyx token]

umm... no, idk what a key struct is

[faint pasture]

Do you know what a struct is

[onyx token]

okay so i set it now as a "Blackboard object reference" and when compiling it compiled for about 20 seconds and i thought unreal engine crashed

sadly it didn't give out anything, not even NpcActor

[onyx token]

sure

[faint pasture]

What exactly are you making, a service, decorator, or task?

Have you tried this

[onyx token]

that could be the node i was looking for, lemme try

oooh shit that's it! Thanks so much! @faint pasture

i would've literally never found this node ever...

[faint pasture]

Blue pins are structs

make and break them to see what they are

Although "change what you're doing if the target is attacking" should be on the BT level

[onyx token]

well my idea was i'd use a selector - and the "Block" task checks if i'm under attack.

If it's wrong, the selector moves over to the "Attack" task and the NPC attacks

[tropic pecan]

Hey there, I hope this isn't a complicated question, I just don't know. I ask anybody who knows how to send an NPC to anther level? My intension is to make both player character and non player character to another level but I don't know how. I have one inspection but I don't know how to set it up if that's the case.

[faint pasture]

Not an expert with levels but I'd guess you probably want to stream the levels in and out and have the persistent stuff in the persistent level

or just save/load them

Assuming you already have the framework to save/load the player character and NPC in question, just use that

save, load new level, load them

We do everything at runtime in our game so literally never call load level ever.

[tropic pecan]

Sorry, I quickly wanted to analyze the level streaming and that's something I'll need to look into for a bit. My level changes may need a redesign. I may ask further later on but I guess I have some researching to do on level steaming. At least thank you for giving me something to think about considering.

[faint pasture]

If your game has saving/loading anyway, just leverage that

if it must be seamless, then consider the level streaming

[tropic pecan]

It does have save and load but I don't know. It's structured with Save Game blueprint and Instance so I'll have to see while looking.

[faint pasture]

If you got that, then moving to a new level would be no different then exiting, then entering the new level

[wicked crag]

Does anyone know of a procedural recoil tutorial that I can follow? Whenever I try and add an animation for an automatic weapon, the animation just fires on the 1st shot

[sand wasp]

why does an event in my AnimBP only fire on server but not on client, even when not set to be replicating?

[trim pollen]

https://docs.unrealengine.com/4.27/en-US/BlueprintAPI/Utilities/String/ToString_transform/ is there no inverse of this?

I have a string representing a transform and would like to use it as such

[faint pasture]

That sounds like a bad idea but go on...

[trim pollen]

nothing else, that's it

[trim matrix]

Anyone know why Unreal 4 BP won't set the value of a variable within its own class?

Like even this... I go from event tick to decriment the value of a float by the amount of time that is passing

skipping the branch

cuz for some reason I cannot set the value of the boolean in a function & then get the updated value in event tick even though in the function it is updated to the new value

[faint pasture]

Show how you are trying to set the Boolean

[trim matrix]

Using set

these print prompts appear

all I did was create the variable and set it here

then check its value in event tick

[trim matrix]

That's annoying... you have to RIGHT CLICK the fekin function to call the parent function instead of just dragging off and typing "Parent Event Tick"

[celest sierra]

Why

Why does...

Sequence isnt... doing the other one

why

[austere ingot]

anyone have any pointers on recreating this aiming setup?

[fiery glen]

which game is this?

btw it's probably just getting a vector from the combined x/y of the last frame to get the direction the mouse is moving

and then changes the arrow to be pointing that direction

[austere ingot]

I tried using that in general but the x/y resets to 0 every frame after you stop moving haha

[faint pasture]

Is that aiming? Clip is so short can't tell wtf is going on

[austere ingot]

yeah pretty much, where the mouse moves it points the arrow and when you attack it swings in that direction

just trying to get the values for the arrow and to set stuff to know which animation to play

[fiery glen]

yeah, if it stops moving don't reset the value

[austere ingot]

kind of works with Get Turn and Get Look Up/Down

[faint pasture]

Just have a clamped vector you add to with mouse/stick input

[quiet hamlet]

super quick question. I have a VERY simple objective system that basically is a BP with a trigger that changes the objective on the widget when the player overlaps the trigger. However, it does not like the destroy actor component attached and throws an error. I know there is another node/way to destroy the actor for widgets, but i cant remember for the life of me how. If someone wouldn't mind throwing some advice my way, I would appreciate it ty 🙂 If i leave the destroy actor attached it throws a character ref error

[faint pasture]

RecentAimVector = ClampVectorLength(RecentAimVector + Input, 1)

[austere ingot]

not sure if clamping will work when it goes negative and positive though

[quiet hamlet]

or alternatively just something that would stop the trigger from triggering again and remove the actor

nvm delay fixed it

[shadow field]

don't want to interrupt but anyone want to help me with smooth camera transitions with the set actor location?

i know i mite need a timeline or vinterp but i am unsure how to use those to make it move smooth

[late gorge]

Anyone know why my search in blueprints randomly stopped working? all blueprints are indexed, it's just stuck at like 85%

[runic parrot]

Hi! does anyone know if there's a way to compile all blueprints only? like a short cut

[dusk ember]

how do i make it so that when the player moves, their speed doesn't gradually go up to the max but instead goes instantly to the max?

[runic parrot]

Ramp up aceleration so it acelerates instantly

[dusk ember]

how do i do this?

[runic parrot]

Try upping this var

[dusk ember]

works great, thanks!

[faint pasture]

Sure it would, you're clamping VECTOR length

[short pawn]

is there any safe way to rename your project file?

[short pawn]

have you looked into set view target with blend?

[ripe tusk]

ive got a very simple setup here to raycast from the 3rd Person BP template but for some reason i cant get it to ray cast in the direction the camera is facing

what am i doing wrong ?

ofc using the world transform as start and then multiplying that vector for ray length would work but it would be wrong as the player moves away from the world origin

nvm brain was farting (this is why sleep is important)

[gentle urchin]

😅

Happens to all of us jk

[ripe tusk]

i know right! ive done 10x more complex stuff and im sitting here going whaaat is GOING on

[late fulcrum]

Any idea what's the name of the function to change the display in the settings in case of multiple displays? https://docs.unrealengine.com/4.27/en-US/API/Runtime/Engine/GameFramework/UGameUserSettings/

[ripe tusk]

can any of the BP wizards here explain to me while this is resulting in an infinite loop

the tick version works just as intended but when i use a while loop it raises an error

the script is just checking if the actor (The 1m cube) is moving or has come to a halt

[gritty plover]

Is there any way to dynamically set the length of a timeline, as well as the time of the last keyframe, in a blueprint using an exposed variable?

[gentle urchin]

While is continuous, blocking

So while (lol) the While condition is not met, it'll do the code again

for infinity

You'd need to take care of the condition inside the loop

The engine will go

IsConditionMet? False -> Loop Body() -> IsConditionMet? False -> Loop Body() -> IsConditionMet? False -> Loop Body.... for infinity and beyond

[gentle urchin]

Yes,and no. Playrate will effectively adjust its length

adjusting keys, not so much

Setting Length to 1s means that if you want a length of say ... 10 sec... you just do PlayRate = 1/10

[ripe tusk]

correct, but the condition is met (eventually)

[gentle urchin]

Not while it's blocking it is not

You're telling it to "untill this condition is met, ONLY print the string"

so it'll never do what makes the condition met

being a blocking loop

[gritty plover]

And uhhh how do I set PlayRate?

[ripe tusk]

hmm i think i get it let me give it a swing

[gentle urchin]

Timeline -> Set PlayRate?

[gentle urchin]

Imagine the While Int < 5 condition.
If you then in the while body increment the int, it'll exit the loop whenever the int is >= 5. Nothing else would happen during that time period of incrementation

[white elbow]

what am I doing wrong here?

[gritty plover]

Thank you

[white elbow]

it's a BP for a projectile

[gentle urchin]

The error says

Object does not match specificObject

the variable is part of the specificObject

Also

I would think it makes more sense to let the damaged actor handle its own incoming damage?

So bullet doesnt care who he hits (except owner, which you may already have ignored)

[white elbow]

is it more efficient this way?

[gentle urchin]

Its cleaner if nothing else

Encapsulation of logic etc

maintainability

[white elbow]

okay I'll try it

I still haven't figured out how to make by own projectiles ignore me

so they pass through

both are physics objects

alright I made this but it doesn't work for some reason

[gentle urchin]

Like...

the projectile calls "Apply Damage"

to the hit actor

the actor reacts with "Take Any Damage"

[white elbow]

so... make a custom event? I dunno how to do it

[gentle urchin]

No, its built in events

"Apply damage"

so the bullet

[ripe tusk]

@gentle urchin im now having the loop body update a variable that it is using to drive the condition but still getting blocked i guess, maybe my understanding of it is wrong

[gentle urchin]

and the damaged actor

[white elbow]

haha how come every time I hit a roadblock there's a convenient function for it? thanks mate

[gentle urchin]

You're on the right track, but missing a fundamental thing. It being blocking means that the velocity is not gonna change, ever, inside the loop

[gentle urchin]

You're not the first one stumbling on these scenarios

[ripe tusk]

but isnt it setting velocity every time it runs the foor loop ?

as the bollean is true

[gentle urchin]

It's setting what it read. But the read value is not gonna change

so if you enter the WHILE loop with a velocity of ... 100. Velocity will be 100, untill the loop is broken

[ripe tusk]

but since the cube is a physics cube and slowing down it will change wont it (ive got a cube im throwing down a flight of stairs)

eventually it will stop moving and its reading should be zero

[gentle urchin]

Physics doesnt update

because you're in a blocking loop

this is what the code really does

[ripe tusk]

oh....

[gentle urchin]

While loops are great for many things,

but this isnt one of them^^

[ripe tusk]

i was doing this instead of a tick since ticking is expensive

[gentle urchin]

this is not cheaper 😛

[ripe tusk]

hahaha

[gentle urchin]

velocity is changed from frame to frame tho

so if you need to react to it , checking it each frame kinda makes sense

[ripe tusk]

yeah i guess a tick script would be fine

[gentle urchin]

If its a problem, move it to c++ 😄 usually less of a problem there

Also its good to always consider if something really must be on tick

or if it actually belongs elsewhere

You'd wanna try and do event driven as often as you can , to avoid letting the engine do work it doesnt need to do

Some things do simply belong on tick and cant be done elsewhere

physics, animation are usually top candidates for what you'd wanna use tick for

[ripe tusk]

also something strange lead me here, i cant seem to turn physics on and off using bp

like i have a raycast to pickup the cube and drop it

works fine but if physics is enabled it wont snap to the character so i disable physics and then when the character drops the cube i enable it

but once i use bp to turn physics on, thats it its never going off again

[gentle urchin]

Im able to disable it atleast

seem to work fine

[white elbow]

alright so I want to make a line trace from the enemy to my pawn, but the pawn only spawns after the game start. What should I put into the Cast To window?

since I can't reference the pawn if it doesn't exist yet

[earnest tangle]

You want the enemy to keep tracing to the player on every tick?

[white elbow]

yeah

[earnest tangle]

If it's a single player game you can probably just do get player pawn

and then check the cast result using Is Valid

it will not be valid if a player doesn't exist currently, since it can't cast nothing

[white elbow]

behold, advanced following AI

[earnest tangle]

if it works it works :)

[pastel compass]

Hi, I got a task to rig and animate this crane for a VR experience. I was thinking of using just a button to go up and then down as you push it a secound time. Any clue to where i should start? Any tutorials etc. that can help me out here?

[thorny rover]

Hi! I have a question! Is it possible to somehow reference to an edited static mesh inside the editor window instead of static meshes inside the engine folders?

like inside the editor my cube looks like this but that reference node lets me access a generic cube from engine folder

[earnest tangle]

^is this a cube you scaled in the editor viewport or what exactly?

[tiny frost]

uh any one know to to bounce a raycast easily

[earnest tangle]

As in, do another linetrace in the opposite direction from the point where it hit or something?

[tiny frost]

yea but i dont know how i would do that

[white elbow]

I set the value range but it still goes outside of that range when I change it

[earnest tangle]

Take the direction of your linetrace and try multiplying it with the normal from your hit.. not 100% sure but it might do it

Then you can calculate a new linetrace based on the direction you get from this

[white elbow]

like this but it still goes above 100

[tiny frost]

Thanks

[gentle urchin]

I think thats only for instanced variables

[thorny rover]

yup, scaled in editor viewport. Thing is, the cube isn't important. I'd like to somehow reference the static mesh placed inside map/level. What this reference node does is that it only accepts content from folders.

[gentle urchin]

You need an actor reference variable

Not a static mesh reference

[thorny rover]

Oh. It only works with actor references?

[gentle urchin]

"Only works" isnt very accurate, but I'll say yes

(Like my typing lol)

[celest sierra]

Is anyone helping around here? Or is it just people saying they have an issue :c

I have another sequence that only plays once

Shouldn't both fire.. both?

[earnest tangle]

Is this a function?

[celest sierra]

Yeah

[earnest tangle]

If you use a Return Node somewhere after that Branch, then it can prevent the rest of the sequence from running

[celest sierra]

ohhhhh

Wow is that seriously...

Wow

[earnest tangle]

a return node will immediately exit the function

[celest sierra]

Dude you solved so many issues just now

[thorny rover]

I think my brain froze a bit. You mean that as actor reference variable, yes?

just making sure

[gentle urchin]

Yepp

[random plaza]

is there any way to make an object only visible to a render target? my inventory system is gonna have a 3d modeled render target for selecting buildings.

[hybrid ether]

I have reload animation to bolt action rifle. Rifle is attached in bp to character right hand socket. How to make this work?

create new socket to left hand and try match transform?

[faint pasture]

@hybrid ether Does your animation have left hand movement?

[hybrid ether]

yes it have left arm movement too

I try something like that and try to match socket

[maiden wadi]

Not sure about "only" visible to a rendertarget. But most cases for this actually put their spawned meshes under the level or somewhere unviewable and render it from there. Then it doesn't matter if anything technically can see it. Less edge case problems.

[faint pasture]

Then why isn't the left hand moving?

You probably have the left hand driven by IK normally and forgot to switch it back to playing the upper body slot during a reload

[hybrid ether]

it is just very little movement

[faint pasture]

What exactly do you want here? If you have an animated the hand to work for the reload, what are you expecting?

Your options are either have the head driven by animation, or some ik maybe

[hybrid ether]

I used that code and now it looks like this

I try figure. Switching attached bones just feel bad

[gentle urchin]

It is possible, did in in 4.16 with sprites on top of characters (for the minimap)

Perhaps it was as dumb as owner no see

[keen dune]

is there a simple BP to count how many times specific function has been executed?

so i can use that value in hud bp

[blissful grail]

Not that I'm aware of, seems quite specific and not an all that common needed operation. Can just have a variable, and increment that variable every time the function is executed.

[keen dune]

i guess the thing i want to make is quite common, cause i want to make a collect/kill counter, but probably the way i want to do it is not so much usual 😅
but in my small brain it seems it would be easier to get positive integer number every time actor is being destroyed, and then just print that number on hud via widget blueprint

that's my bp for destroying and spawning actor

[blissful grail]

So just have an event dispatcher that sends out a message that the banana was destroyed. Then listen for this message w/e you want to get it to the hud. Then just increment a number.

[random plaza]

whats the benefit of using event dispatchers instead of just casting to the target?

[blissful grail]

Decoupling. Casting works as well mind you. It just tightly binds w/e you cast to to this banana object. The banana shouldn't really have any knowledge or care that a HUD exists.

[gentle urchin]

Same with interfaces

[native ridge]

Anyone here know how to manipulate transform data? I am trying to place instanced static meshes on a spline (to make leaves on a stem). I'd like each leaf to have its own transform which can act like a relative transform which is relative to its particular location on the spline. That was I can just change "Custom Rotator" to wiggle the leaf safely in its own frame of reference.

In the first pic, I've got "Get Transform at Distance Along Spline" and I would like to adjust it by the Transform underneath it, arriving at a Transform in the Actor's local space.

What I'm currently doing is producing weird results, but there's also a screenshot of the leaves in a way that's close enough to illustrate what I'm going for. Any ideas?

[gentle urchin]

Seems like 3 leaves evenly rotated around the spline

So at distance along spline, distribute 3 leaves at fixed rotations

Like 0, 120, 240 degrees

[maiden wadi]

One of the best examples you can find for this sort of thing is UI. It's fine if UI knows about specific gameplay objects, but gameplay objects should never know about UI. It's just bad design. Basically if you have to change any gameplay class's stuff because you decide to tear out and not use a piece of UI, you're doing something wrong. So instead of having the actor cast to every single widget that could be updated from it, you just add a delegate in the actor and broadcast it when the actor does it's own thing. UI can cleanly get this actor which is much easier to get than a specific widget and bind a callback to it. The actor class never has to know or care about this widget. You can apply this to gameplay classes and their managers as well. If you have like a time manager that broadcasts shifts and AI needs to change what they're doing at certain times for example. It's much easier to just make a delegate in the timer manager instead of having the time manager get and loop over every single AI that would use this.

[native ridge]

Exactly, that's what I'm currently doing. Works great for a vertical line through world space, but I want it to follow the arbitrary curve of the spline. My difficulty is in translating (0, 0, 120) into the frame of reference of the spline transform and then translating that result into the actor's frame of reference.

[gentle urchin]

Hmm, surely there's something im missing here,

why would it not follow the transform of the spline?

Something like this, but 3x, right ?

[native ridge]

So when you add an instance to the ISM component, it is in the actor's local space. What I want is not in the actor's local space, it's in the spline's--but I have to convert that into Actor space for the "Add Instance" node to understand it.

[odd ember]

not enough vertices

[gentle urchin]

plenty, cant you tell? 😄

[odd ember]

I'm not the judge of that, the game is

and the game is telling you not enough

[gentle urchin]

Im not trying to bend it, no worries

this is by design

[native ridge]

I'm guessing there's something in this space I need to do so I can rotate the spline's transform within its own frame of reference, not the actor's

[gentle urchin]

From the same location, fetch the right vector, rotate it around its own axis, and offset the location by the distance required

[native ridge]

That is a great suggestion. I've thought about that--it would technically work, but I really want to manipulate the leaves with a rotator, not a vector offset.

[gentle urchin]

i guess your leaves then have their origin at the leafe stem?

Almost right

[native ridge]

Well usually their origin is right on top of the spline. Though I want the freedom of what amounts to a Scene Component for every leaf.

[gentle urchin]

Guess im not understanding this correctly then 😛 I thought you just wanted to procedurally place them along the spline at given locations

[lime cairn]

I've got a MediaPlayer that I want to start at a certain point. I've got the setup as shown in the attached image. I can see the video has jumped to the point I designated but it won't start playing

[native ridge]

Yeah, that's the first half! Then, I want to be able to say, "hey, your root offset, rotation, and scale is <Current Spline Transform -->Adjusted by this offset --> Converted to Actor Local Space"

[icy dragon]

Legend says it's still not enough

[gentle urchin]

Being ISM's there's only so much one can do

Personally i think it looks alright for this early in the development

[gentle urchin]

I can't really visualize this part x)

this is what i got out of it x)

[native ridge]

Makes sense, it's a real brain bender. I'll make a diagram.

[celest sierra]

So, can I get some assistance here.

I have a long jump.
I have a double jump.

If the velocity of doublejumping would be slower than the current velocity, then set to true.

[earnest tangle]

Is there a question hidden in this statement somewhere? 🤔

[celest sierra]

Yeah, the question is how tf do I do that lmfao

I did this

[earnest tangle]

I'm not entirely sure if I follow the logic

If you apply a double jump by increasing current velocity by double jump speed, then it would always be higher than current velocity

[celest sierra]

I'm trying to do a situational override on my launch character

Exactly yeah

[earnest tangle]

Is your character using CharacterMovementController?

because it has doublejumping builtin

[celest sierra]

Yeah but I created my own lol

[plain hemlock]

Hello! Does anyone know how to set the Level Sequence Dynamic Transform Origin from blueprint?

I'm trying to create some reusable Level Sequences to things like opening doors, pressing buttons

I can override the instance data and set transform Origin actor in the details, but I'd like to o that from the blueprint. Any ideas?

[gentle urchin]

Sounds like combining transforms is what you want

As you tried to display

And it should basically be whatever local transform + transform at spline in world space

[plain hemlock]

in the details for the level sequence you can override the instance data and set the transform to another actor - when I move the other actor and auto play the level sequence it works perfectly

But if I try to trigger the level sequence from a blueprint, it doesn't work

I got this far:

but I can't figure out what target the "Set transform Origin" wants.

It says it wants a default level sequence instance data object, but don't know where to find that

[celest sierra]

@earnest tangle This almost does it

ignore set doublejump lol

[earnest tangle]

So you have some condition for being able to do the extra jump?

Like a maximum speed or something?

[lime cairn]

Fixed this, it seems the media player does not really like it if you seek and then immediately play afterwards. I moved it sooner in the logic and it works

[hardy kraken]

[Repost from #ue5-general since no one seems to know there]

How do I make a blueprint actor class WITH keeping the lights I have in my scene? They all disappeared when I did the creation of it. (It has been 3 days since I tried solving this issue I'm so desperate pls I'm about to uninstall unreal 😭)

[celest sierra]

As long as you're jumping from the air, it counts as a doublejump

[earnest tangle]

Right so I'd just keep track of whether you're grounded or not, no need to check anything else :)

[white elbow]

I'm using this instead of a timer but not sure if it's too much math to do per frame, it works fine for me but I'doubt it will in a bigger project, what do you think?

[celest sierra]

Well I want it to gain momentum if you're jumping forward and wanting to gain speed. Right when you try to slow yourself, is when it should override (or be true)

[white elbow]

there's SpawnTime and SpawnTimer, they're different

[native ridge]

I agree, it is what I've been wrestling with for a few days--would you mind giving a more specific set of instructions? I really feel like I've tried every combination of ways these nodes can go together.

[blissful grail]

This the 3rd time you've posted about this in a different channel. Please don't cross post and please don't spam. Be patient. <@&213101288538374145>

[celest sierra]

You can reference your old message by making a reply and then saying "Still need help with this" every so often.

[iron raptor]

Hey, how would I go about getting level_1 to load on launch of the game? I've tried a few methods and nothing has worked correctly yet

[hardy kraken]

I get it, but I cant reply to it in different channels

[celest sierra]

yes you can c:

[hardy kraken]

hm wait

[celest sierra]

copy message link lol

[hardy kraken]

ah damn

[hardy kraken]

wait is this guy trying to get me banned?

[earnest tangle]

Well it is in the rules that you shouldn't be crossposting. Seeing you are now getting help on that channel

If you don't get help then you can repost but yeah wait more than 1 minute

[hardy kraken]

I see, I'm sorry. I have read the rules tough, it was just long time ago.

[hardy kraken]

Its been 3 days my man 😅

[celest sierra]

ok back to blueprint talk @earnest tangle

[hardy kraken]

And unreal is hard as crap. And I admit, I'm can be very impatient

[earnest tangle]

Your previous message on ue5 general is literally one minute before you posted here :P

[earnest tangle]

tbh it's a bit hard to understand the exact scenario and the exact problem you're having with it... if you need the jump to only be possible at a certain speed, you probably need to compare the current speed against that speed

[hardy kraken]

Yes because I noticed it might have been the wrong channel

[celest sierra]

So I'm checking if the player WANTS to slow themselves down. If the player's next jump would slow then down, then override (top launch character)

[gentle urchin]

It should in my head be just controlling it like local actor space and cpmbining it with the spline transform .. i can test it a bit later

[earnest tangle]

how would you determine if the player wants to slow down? I mean you could check if they're pressing forward or something?

[celest sierra]

Well imagine if they turn their camera around, then jump forward

[earnest tangle]

ah, so that would probably normally reduce their speed since it's in a different direction?

[celest sierra]

Yea

[native ridge]

After combining them, what space will they be in? World space? Relative to the Actor? Relative to the spline?

[celest sierra]

anytime you jump into an opposing direction, (since it's a long jump) it'll apply force to the new direction

[earnest tangle]

Maybe you can compare the current movement direction vs the current facing direction then?

[gentle urchin]

World, if you go by spline world

[gentle urchin]

^

Or spline local if you go by local , i believe

[celest sierra]

current movement

[native ridge]

Is this what you were thinking?

[celest sierra]

vs the current facing direction?

[earnest tangle]

@celest sierra You can get movement direction from Get Velocity -> Normal or whatever the node was called, then you can compare it with Get Actor Forward Vector which gives you which way you're currently facing

you can use dot product with some math or trigonometry to calculate the angle difference between the two

[celest sierra]

this was a camera check

This would check if the player turned their camera around, then jumped

which worked

but if you didn't turn around, and held S(backwards) it wouldn't override. So I added "backwards pressed"

but this added an issue where if you were already facing backwards, then tried to double jump backwards, it'd override the second jump

[earnest tangle]

Ah, so also pressing backwards should cause it to override without necessarily turning around?

[celest sierra]

Yeah, but #blueprint message would happen

[earnest tangle]

Right, so here's what you can try

You can get the current input vector for movement which gives you which way you're trying to go in terms of inputs

[celest sierra]

So that's why I wanna check velocity

[gentle urchin]

Yes, but the other way around. And not multiply but combine, i believe

[earnest tangle]

then use Get Actor Transform -> Transform Direction with it

This converts it into a direction in the world

Now you can compare it with the direction you get from velocity

this will take into account facing and which direction you're trying to go via buttons too

[native ridge]

Ok, so this?

[native ridge]

Oops, sorry didn't see the rest of the sentence

[celest sierra]

I'll look into this after my lunch break

[native ridge]

So the only "combine" I'm seeing is rotator related (see pic)
Also, googling "ue4 combine transforms" returns the doc page for "compose transforms", which is the * node I've used.

[gentle urchin]

Welp, you're correct, i did the same thing ! * it is ! 😅

[native ridge]

So that works pretty well--the only problem is they're tipped to the size and I can't seem to get them rooted pointing up. I've had this come up a few times now.

[native ridge]

Oh good gravy I think this might be it

[gentle urchin]

Oh lord 😂

[gentle urchin]

This looks splendid !

I neeed these in my game lol

[native ridge]

It would be the 3rd false "oh good it works" in 3 days so I need to check edge cases

Thank you :), your help was incredibly useful

[gentle urchin]

love edge cases

They're always so fun to deal with

[native ridge]

would you like a mention in the credits? I can add it to the list

[gentle urchin]

Hehe nah im all good ^^

Last edge case i had (except recent spline fun) was procedural landscape where it happened one of ~80k times

Fun times

[native ridge]

That's "Ghost Stories for Game Devs" material right there

[iron raptor]

Does anyone know why my blueprint keeps loading in levels that it shouldn't be in? 😭 It's the trigger to load the next room, so I need it to be room-specific. For some reason it doesn't go away when the previous level is unloaded.

[gentle urchin]

Sounds like its not part of the loaded level

Or unloaded level

[iron raptor]

I've double checked it, and it definitely goes away when I turn off visibility for the level it's supposed to be in. But it stays consistent when the game is playing and you go to another room

I haven't implemented room snapping yet, so it might not even matter since you will physically move away from the bp and can't trigger it again because there's no backtracking. But it's still annoying

lv 1 turned on

lv 2 turned on

Vulture head is the bp I want, and looking in the levels there is only 1 per

[gentle urchin]

Worst case youd just control it manually

[iron raptor]

I suppose I could tell the bp to destroy itself after it's used 😆

I can probably just ignore it. The levels won't be spawning in the same place like they are now

[rain ravine]

Can I covert a BP back to Data-Only Blueprint?
I needed the full UI to change something, but I need the data only view back now

[earnest tangle]

I think as long as you don't put anything into the graph it should go back to being a "data only"

Might need an editor restart for it to happen though

As far as I know there's literally no such thing as a "data only" BP, the editor just gives you that UI if it thinks the BP contains no logic

[rain ravine]

yeah editor restart helped

[tiny prairie]

In a multiplayer game should the players widget where its shows his health and inventory only exist on the player game or also on the other players games?

[gentle urchin]

Sounds like a design decision

[dense badger]

Any BP experts here familliar with an issue where re-typing a paramter causes it to have an incorrect default value? IE: Retyping a bool into an Enum will sometimes cause the enum to init with the value of "True" or whatever the bool was set to. Sometimes you can refresh the BP several times to fix it, but in the case of data tables containing structs, it seems like this garbage init data will compile just fine until you cook and then it will fail. Is there a known issue for this?

[gentle urchin]

Like, usually other players dont need to know about the inventory

But hp could be usefull

[tiny prairie]

i have a component that has the inventory stuff but that component has a widget that show the player what it has

i want to create the widget for only the owner of the inventory

but idk how to go about it

[gentle urchin]

Inventory is server data, and personal to the player usually

[tiny prairie]

ye i mean more like idk how to make a widget only for the player i have tried * Is local player controller* idk if that is the right node for this tho?

[dawn gazelle]

Where is your inventory component stored?

[tiny prairie]

player character

[dawn gazelle]

So you can do an input action either on the character or on the player controller to create the widget, the widget can get the owning player pawn, which you can then get the component off of, and display the contents of.

[tiny prairie]

how do i update the widget?

[dawn gazelle]

You can put an event dispatcher in your inventory component that you call whenever the inventory is updated. The widget then binds to that dispatcher on construct to update its conents.

[tiny prairie]

are event dispatchers per client or over the whole game? haven't used them much with them yet

[dawn gazelle]

Modifying existing structs that you already have been using is usually a bad idea.

[dense badger]

I mean sure, but it's rare that I would ever figure out a struct content 100% correctly and never touch it again... it's game dev

I think the problem is beyond structs tho, it's fundamental to retyping vars. For example if you make an enum, choose the value at index (1) and convert to a float, the float default will be "1". This behavior works for some (compatible) types but somtimes breaks with incompatible types.

[dawn gazelle]

Event dispatchers themselves don't replicate anything, they are just a means of communicating from one place to many places that listen to it. So if you're running on the server and call the event dispatcher, then any listening objects on the server will hear it.

If you're using something like an OnRep on a character, that OnRep fires on all clients, so if you called an event dispatcher there, it would be firing on all clients. The idea here is though, your widget is binding to the event dispatcher that exists in that specific component within that specific character. It wouldn't matter if the event dispatcher fires on other characters as your widget isn't listening to them.

[echo salmon]

I got a rolling ball controlled with keyboard, and i want to add some friction so when the player stop pushing the W (to move forward) the ball after a couple of "meters" stop rolling. I have added a physical material on the ball material and increase the friction but the ball keeps rolling slowly even if the player release the move forward button.

[celest sierra]

I got into this. I'm still kinda confused what's going on

the get velocity is the current direction
The transform is the player input direction

[earnest tangle]

So the idea is basically this: Get the direction the player wants to move to, and compare it to the direction it's actually moving to

The last input vector gives you what the input is, eg. forward, backward, whatever - but this is in the actors coordinate space

Transform Direction converts it from the actor's space into world coordinate space

the velocity vector is also in world coordinates

so now if you get a normalized version of the velocity vector, you can compare these two directions, and you should get a value you can use

[rotund coral]

Can you use blueprint search syntax to find a C++ property exposed in the details panel?

Or can it only find properties created in BP.

[echo salmon]

How i can access lock position , via blueprints ?

[maiden wadi]

If memory serves, it should be able to find stuff used in BP even if it's from C++.

[gritty trout]

Can anyone tell me how it's printing this message when the condition for that specific branch is returning as false?
https://blueprintue.com/blueprint/z6y23d9e/

[maiden wadi]

Because you're printing after changing data.

[maiden wadi]

I would wager if you put that print before the SetElem node, it'd print true.

[maiden wadi]

From what I can see, you cannot. This looks like a pretty deep C++ rabbit hole that was designed for complex design time settings without much regard for runtime changing. Likely assumes you wanted to play something like a side scroller with a constant plane setting.

[trim matrix]

Hi, can anyone help me with linetraces, because I've been trying to get a system where I can tilt the camera to give my wallrun a more "wallrun like" feel, but I need to get the right side to tilt my camera to. Whenever I linetrace it just goes to the center of the map, but im not sure where to put the end point. If anyone can help, or to be honest find a more efficient way, i'd be grateful

[tiny prairie]

lane trace goes from start to end in this case your world location of your "Mesh" to 0,0,0 aka the center of the map

[trim matrix]

yeah but if I wanted it to go to a wall that i'm "running" on, where would I set the end to?

example

me running along that wall

[gritty trout]

You'd make a pretty good Jeraptha. Strangely, moving this print function to just before the data is modified, it also fixed another bug I was having with that same function. Thanks!

[echo salmon]

@maiden wadi i want to constraint my player not to move ( not pause the game though) and then resume

@maiden wadi not disable input thought because its rolling ball

@maiden wadi and it will keep rolling

[trim matrix]

I need it to hit the wall, then find which direction to tilt the camera

[trim matrix]

I can join VC if it helps anyone.

[maiden wadi]

All I'm getting is Sonic the Hedgehog?

No, stop moving entirely. Actually you can do that by clamping the velocities in blueprint I think.

[echo salmon]

let me see

[maiden wadi]

This might work.

[echo salmon]

it worked

[maiden wadi]

I mean alternatively you could just stop simulating physics entirely and then just reenable it

[faint pasture]

Or constrain it to the world

Depends on what you're trying to do

[echo salmon]

@maiden wadi ty ❤️

[trim matrix]

?

[tiny prairie]

to get the tilt affect you could probably also get the location from the wall and your location and then calculate the rotation based on that @trim matrix

[maiden wadi]

Generally speaking, you could hack this by doing a radial trace around the player, but the fact you would need to do that is rough design. You already know which side the wall is on due to having started the wall run in the first place. I'd find a way to cache that

[trim matrix]

yeah, but basically every wall is runnable, so idk if that would work

[trim matrix]

I'll try that

[tiny prairie]

i mean get a reference to the wall you are currently riding

[maiden wadi]

Is this what starts the wall run?

[trim matrix]

yeah

I can send a fuller screenshot but my code looks like absolute garbage

[maiden wadi]

The SweepResult should have some data for you. If you could get the hit location, transform it into your character's local space and determine if it's on the right or left side of the character, you'd be able to know which direction to tilt the camera maybe.

Something as simple as this might work, unsure.

[trim matrix]

okay, I'll try that

I did this, but it's still kinda messed up, and counts as a hit when I jump and land

(wall collision is basically a huge mesh on the outside of my character)

to detect wallruns

[celest sierra]

So I have 2 inputs.
Where I'm moving with show 0 if im going straight, and 180 if I'm moving in the other direction.

Where I want to move will get my input direction as a vector.

How can I compare these two? If the direction I want to move in is the opposite of where im moving... then true.

How can I do that?

[tiny prairie]

make the wall collision not hit your feet

only the stick out on the sides of your character

[trim matrix]

fair enough lol

that was a stupid question

[celest sierra]

my wall run looks like this lol
https://streamable.com/ctsv3r

@trim matrix

[celest sierra]

Really need some help with this

[faint pasture]

Dot product between local velocity and input

or global velocity and input rotated to be global

it'll be positive when aligned, 0 when right angles or one is 0, and negative when opposite

[feral ice]

can i turn off so i dont paint foliage on meshes only landscapes?

[trim matrix]

that is actually so nice

how do you get the camera to do that

[fair magnet]

If I make some logic OnDestroyed is it possible that the actor is being destroyed even if whatever logic I did in that event isn't finished yet?

[odd ember]

yeah there's an option for that somewhere

click every button you'll find it

[feral ice]

Thats doesnt seems like a good idea

[odd ember]

why not? the buttons aren't going to kil lyou

you can ever hover over them to see what they do if you're scared

[fair magnet]

What if they do?

[odd ember]

then that serves them right for connecting vital organs to their pc

[celest sierra]

It's actually loosely made from a tutorial

[celest sierra]

See, I need more info than this. I'm still newish to this stuff and hearing that is still somewhat giberish. I got dotproduct and just slapped it in lmfao

[gentle urchin]

Calculate direction?

What is that

Not compatible with dot , thats almost vertain

[odd ember]

I love that it says direction and then it's a float

must be for blendspaces

[hushed gazelle]

hi, whenever i lock-on and i walk backwards, my character does some stuttering, is there a fix?

[faint pasture]

Calculate direction returns a yaw angle

[gentle urchin]

Looks like conflicting rotation

[hushed gazelle]

would it be this?

[faint pasture]

IF you slightly strafe left or right does it not stutter?

[hushed gazelle]

yeah it doesnt

[faint pasture]

It's probably from your blend space not being smooth between -180 and 180 yaw

do you have the exact same animation at both places?

[hushed gazelle]

wdym?

for lock on and normal?

[faint pasture]

No your locomotion blend space

does walking at -180 and walking at 180 degrees result in the exact same animation

[trim matrix]

can you link it please?

[hushed gazelle]

no, i have a walking backwards anim

[faint pasture]

show your blend space.

[faint pasture]

@hushed gazelleIt's happening around here

Check it in the blend space editor and make sure the transitions are smooth near there

it's prolly your left and right strafe animations not matching phase or whatever

by phase i mean the left foot right foot timing

[hushed gazelle]

yeah the animation is smooth, i think its to do with my lock-on because beforehand, i always had strafe walking, and walking backwards was fine

[faint pasture]

walk backwards and tap left and right strafe or move the mouse around, does it do it then at all?

[hushed gazelle]

yeah, walking back and tapping left and right stutters too

[faint pasture]

Yeah fix it in the blend space

[hushed gazelle]

my mouse input is turned off in lock-on mode

[faint pasture]

in the blend space you can preview by dragging the green dot

also remember you'll never hit the corners

[hushed gazelle]

thats what im confused about, my blendspace is completely fine

nothing stutters in there

[faint pasture]

wiggling the green dot around the bottom middle dot doesn't make it stutter?

[hushed gazelle]

nope

[faint pasture]

show how you're calculating the inputs to this blend space

should be a dot product between velocity and forward / right vectors

[hushed gazelle]

not sure where that is

[faint pasture]

Then find it lol. Probably in the anim BP

[blissful moat]

Is it somehow possible to edit actors in a child blueprint instance from within a parent blueprint?

I would like to edit these splines that are part of a child blueprint

oh no 😄

[faint pasture]

child actor component is ass

IDK why tho, it would be so handy if it didn't suck

[blissful moat]

hahahahaha great

[faint pasture]

I like seeing actors within actors, really wish we had the Godot paradigm

[blissful moat]

Is there a better way to do this?

[faint pasture]

Have you looked at how Godot does it? Super slick.

Everything is a scene. The world, your character, the gun, the bullet, all are on the same level, not divided into actors and components

[blissful moat]

The problem is that I need these splines to be unique for every one of these grabpoints, and edit them manually

[hexed oasis]

can I get data from data table containing child stuff as the parent?

[spark steppe]

what?

[small halo]

can anyone help me with ai vs ai please?

[spark steppe]

i don't think that you can inherit data tables?!

[hexed oasis]

like... if I got struct parent and struct child
and the data table is built with the child struct can I get the data as the parent struct?

[spark steppe]

can you inherit structs? Oo

[hexed oasis]

mm ya?

in cpp

[gentle urchin]

Extending them, is it not ?

[spark steppe]

yea, but i guess BP isn't aware of the inheritance

maybe that works in cpp tho

[hexed oasis]

welp made a cpp function helper that does the job 👌🏻

[charred berry]

little lost here,- onbeginoverlap on trigger in level, but I don't want to dol anything but make sphere that has animation attached , become visible ( easy part, visible or not) that is in level right next to trigger , is there a tut for that or if not what do I call to tell overlap, the target is the sphere that on cue will animate ( shape ) start interfaction with character ? TY anyone, hope I explained that right to be clear of intent

[odd ember]

sorry it's not very clear what you mean. can you explain it in steps?

[charred berry]

ya I wasn't sure it was ;0-0

ok

[faint pasture]

Are sphere and trigger inside the same actor or no?

Is it like a trap where the trigger and the thing that does the thing is all wrapped up in one actor, or seperate?

[charred berry]

I have a sphere trigger in level , that when triggered, is supposed to make a smaller sphere visible, and on cue start interaction with character. I'm just not sure how to tell onbeginoverl that, on overlap, the new target is the sphere ( sphere b , not target sphere)

well honestly, I m not sure how to answer that, not being sure how to make it all hapen LOL

happen

[faint pasture]

So you want a separate trigger and thing that responds to the trigger?

Start by making it all in one actor if you're as new to this as I think

[charred berry]

trigger > overlap> make the other tinier sphere visible and start interaction with character

simplest way I guess to describe ;0-0

[faint pasture]

OK so make one actor with the trigger volume, the other smaller sphere, and all the logic

[charred berry]

basically yes

[faint pasture]

you can implement OnBeginOverlap(TriggerSphere) and do the logic from there

[charred berry]

ya thats what I have so far, I just wasn't sure what the BP logic would be , to make the smaller sphere active as in , the new target going fwd

if that makes any sense ;0-0

as in, become visible , transform and ask character for input

[faint pasture]

Event Begin Overlap(TriggerSphere) -> filtering checks to rule out unwanted overlaps -> make small sphere visible.

Get that part working then worry about the "asking for input" part

[charred berry]

yes

[small halo]

https://gyazo.com/46cc6ad8cd4d14ced3c8b0b46b632a50

is it a good idea to link the branch to cast failed?

doing ai vs ai

[tiny prairie]

any difference between (message) and (interface call)? Interface blueprint

[trim matrix]

Hi, what is the best way of switch controls between keyboard and gamepad

[icy dragon]

By using input mapping. Don't just hard code the keyboard input events.

[trim matrix]

Thanks, but what if my input should act little bit differnt

[tribal stream]

How do I delete actors in the order they were spawned at?
Detail:
I am making a flappy bird game and I spawn these obstacles each 1.5 seconds. I want to delete the obstacles once they're off-screen, which roughly takes 4-5 seconds. The issue is, when I destroy the component using a for loop node, it destroys the last created actor only, so it doesn't take into account the order in which they were created.
This is my setup.

so if each 1.5 seconds an actor spawns, only the 4th actor will get deleted.

[tribal stream]

wait a sec, the for loop pin is not connected lol

will try it first.

Tried doing this.....
still....no luck.

I was thinking of making a big collision/overlapp behind the player and when the actor hits it, it gets deleted.

For the time being, I will use this fix, although I am not sure it is the best.

[tribal stream]

if anyone could guide me here, that would be cool.

[celest sierra]

Can someone join Feedback&Support and help me figure this shit out real quick?

nvm

can't stream anywhere lmfao

[faint pasture]

Have the spawner keep track of that and destroy them

Or teleport them back to the beginning when they go offscreen

[tribal stream]

Well, is not that what I am essentially doing?

wait a sec, you mean I should use event tick and track the data?

[tribal stream]

though I am not sure if that's even doable lol.

[faint pasture]

First of all why are you making an array containing that one spawned actor then looping over the array (which contains 1 item) and destroying it?

Honestly just set their life span to 3 seconds or whatever on spawn and call it a day

[tribal stream]

how do I do that?

[faint pasture]

Just have whatever is doing the spawning crank out obstacles. In your obstacle BP you can set the default life span too, so the spawner has to do nothing after spawning them

[tribal stream]

Do you mean I should kill it from the blueprint it was created?

oh I get it

[faint pasture]

Have you tried searching for life span in the obstacle actor properties?

[tribal stream]

to be completely honest, no.

[faint pasture]

go do that

[tribal stream]

I am fairly a beginner, so that did not cross my mind.

[tribal stream]

Roger that.

[faint pasture]

Might be exposed right off the bat or you might have to show inherited variables but it's in there

If not, there's a node called Set Life Span and they can call that on begin play

[tribal stream]

will try it now

[faint pasture]

yes

put that to like 5 or whatever