blueprint

[quick grove]

ok thanks

[digital palm]

Hey, little problem with a line trace and a knife. As you can see on the picture, there is only one line trace, it's not working on every tick. I'm doing the linetrace inside a base weapon class so when the left click action is called, I'm firing the line trace function. Any idea?

[velvet dagger]

I have a question that might be a littleee stupid but, does the amount of code affect a games size?

[willow phoenix]

1 letter = few bytes or something like that. 0 and 1 beeing the cheapest... but i guess thats kinda neglegtable if you use ue4

[velvet dagger]

Thank you guys :)

[willow phoenix]

its actually good practice to reduce the line trace and not call it on every tick. what are you trying to achieve? you can always get a timer or a timeline to blast out more line traces, but that affect performance

[digital palm]

The goal of that is to make a linetrace to make damage

[willow phoenix]

with the knife??

[digital palm]

yes, no?

[willow phoenix]

you want to have a lasergunknife that is permanently shooting?

you could have a box collision on that knife and on overlap deal damage.

i guess that would be more suitable for a knife

[digital palm]

Yea and only damage if attacking, ok sounds to be a better idea

tks!

[willow phoenix]

np:)

procrastination on a whole other level for me today

[eternal drum]

Help

Why does this move the uv map

and this tile it /make it bigger?

does it have to do something with the U and Vtiling values?

[earnest tangle]

think of how the maths and values work

[brazen merlin]

think of TexCoord as getting the UV space which is 0-1. Adding a number to it offsets it. Multiplying it increases the range of 0-1 to 0- whatever you multiply it by

[earnest tangle]

in ths first example you always add the same amount into the coordinate

so for example 1 + n, 10 + n, whatever, so you get an offset

the second one works much in the same way but with multiplication

[eternal drum]

Would the n adding 2 to the texcoord be the same as multiplying it by 2?

[brazen merlin]

adding and multiplying give two different results as you have posted

TexCoord + 2 would look like TexCoord. TexCoord * 2 would show you the texture tiling twice

[earnest tangle]

You need to understand the maths and how it works

1 + 2 = 3, 2 + 2 = 4... but 1 * 2 = 2, 2 * 2 = 4, and so on

[brazen merlin]

yes but TexCoord + any whole number won't look as anything as really changed

[earnest tangle]

Yeah it's just an example because it's easier to do maths in my head with full numbers lol

[brazen merlin]

it is, but to understand what adding does (in the case of uvs), it shows its effect with decimal numbers

[brazen merlin]

the texture is shifted around when adding

[eternal drum]

🤦‍♂️

[earnest tangle]

this is a great video on this topic btw, with very good visualizations that will help you get a better intuition for the math https://www.youtube.com/watch?v=IUZ1exyk6hw

[umbral ginkgo]

hi y'all

Yesterday I asked on here how I would use an array to randomly select a random actor of a certain class and disable all of the other actors of that class temporarily (I have already managed to get the array working). Someone suggested I use the for each node to check each actor and use a tag for the one I don't want disabled.

how tf do i use a for each loop to do that

[brazen merlin]

so you've got a bunch of actors and some have tags?

[umbral ginkgo]

Yep

or waiot no

[brazen merlin]

and what you want to do is get just one actor from that array at random?

[umbral ginkgo]

i misread that

I just realized that this is very confusing to read

Ok, what i need to do atm is assign a tag to an actor chosen by an array

which sort of leads into what I wrote previously

[earnest tangle]

so you have the actors in an array? and you need to pick one from this array at random, and disable the others?

[umbral ginkgo]

but the problem is the array only gives the number of the chosen actor

[umbral ginkgo]

yes

except the array already works

i just gota disable them

if that makes sense

[earnest tangle]

use Random From Array to pick a random one, then foreach loop the array and disable any actor which does not equal the one you picked at random :)

[brazen merlin]

you dont need a for loop

it sounds like all you need to do is pick one and give it a tag

[umbral ginkgo]

yes sort of

[earnest tangle]

You don't even need a tag for this.. just stick the selected one into a variable

(important to do that from the random from array node, otherwise it will keep getting new ones at random)

[brazen merlin]

i guess were reading this in different ways, now im not sure whats needed

[umbral ginkgo]

Yeah I realized how poorly written it is

[earnest tangle]

yeah it sounded to me like the tag was just a suggestion previously :)

[umbral ginkgo]

yes the tag was

tag and for each loop were

[brazen merlin]

is the tag important to determine if it should be disabled or something?

[umbral ginkgo]

no the tag was what someone else suggested to assign to the actor chosen by the array

[brazen merlin]

oh

so without too much technical jargon, what are you trying to do?

[umbral ginkgo]

ok, I have a bunch of actors in the scene and one is randomly selected by an array. What I'm trying to do is disable the other actors except for the one selected by said array

[brazen merlin]

what do you mean by disable?

the rest makes sense

[umbral ginkgo]

So the actors are triggers

and I want only the selected one to be able to be triggered

[brazen merlin]

the last node isn't right, but i think you have already

[brazen merlin]

this is actually more preferred

[umbral ginkgo]

this is what my code looks like atm for the array

[umbral ginkgo]

^

[brazen merlin]

this is assuming that all are enabled, so only disabling is called

[umbral ginkgo]

Oh, could I use random instead of last index?

[brazen merlin]

getting the length then a random int is what this node does, yes

two nodes in one

[umbral ginkgo]

huh came here to try and implement a new function and ended up neatening up my code lol

[brazen merlin]

always a good byproduct

btw, in case the one that is chosen is also disabled, it would be to be enabled, so:

[umbral ginkgo]

Ok, will have to try and implement this

i'll come back if i have issues

[brazen merlin]

rgr

[umbral ginkgo]

(expect me to come back in 10 minutes completely and utterly confused)

[brazen merlin]

10 min? thats not too bad

[umbral ginkgo]

Could be worse...

[true marsh]

Is there a way to check if an AI is on a navigation mesh?

[earnest tangle]

you could try projecting its position to navmesh and seeing if it's different by a sufficient amount.. might be some other ways besides this too

[brazen merlin]

maybe?

[eternal drum]

Thank you @brazen merlin and @earnest tangle !

[true marsh]

@brazen merlin Perfect thanks!

[umbral ginkgo]

I have the feeling I did something wrong

this'll probably be more helpful on second thoguht

what'd I do wrong?

[brazen merlin]

hmm, it might be the wrong data type

right click that warning node and refresh, might also be bugged

refresh it then compile to double check

[umbral ginkgo]

oop

it was buggewd

[brazen merlin]

ah ok

wasnt sure with an array name "actors" since you have a specific class

[umbral ginkgo]

huh didnt know abt that

thx

now to test it

[brazen merlin]

np, you'll find that useful when you start making and modifying function output/inputs

[umbral ginkgo]

Yeah, that will probably save me many hours of confusion as to why something isn't working

also it worked

[brazen merlin]

great!

[umbral ginkgo]

I'm amazed by your knowledge

thank you as always

[brazen merlin]

for sure

[flat coral]

Any advice for cleaning up blueprints like this, which aren't completely fucked, but are definitely still a little fucked?

(Other than "less inputs", I know it's got too many inputs 😦 )

[cunning hornet]

That honestly doesn't look too bad in my opinion

I know that's probably not what you were wanting but, I'm unsure of what I would change :/

[flat coral]

Honestly that's actually useful feedback. I'm self-taught and working alone, so I have no idea where the bar is for how messy a blueprint can be

[cunning hornet]

I was wondering if anybody would have advice on how to fix this unwanted behaviour? Currently I have set input bindings to help pan the SpringArm of my camera to rotate either 90.0 or -90.0 degrees based on whether the user uses the L/R triggers (Q and E on keyboard).

However, whenever the SpringArm's rotation is set to 90.0 or -90.0, the character's rotation will snap back suddenly and I'm unsure how to fix it.

The game has the rotation and shoot mechanics tied together.
I use the Arrow keys to control the rotation.

Here's a video showing the unwanted behaviour (will show it working at first then the unwanted snapback after)

[brazen merlin]

yeah that looks pretty normal, not too hard to read. functions can have local vars which can help organize, but honestly not sure if it would make it more confusing for you

[flat coral]

Haha there's already a local var in there. But if you set more than like 2-3 of those it looks just as bad.

[brazen merlin]

exactly, all hail reroutes

[flat coral]

Lemme see the BP?

[cunning hornet]

Sorry for how outrageously large and messy this is (I've had to split up screenshots into 3 images)

[flat coral]

Haha suddenly I feel better about my little BP

Hold up, am I reading it right that this starts with a "turn left / turn right" input, and ends with firing a rifle? sorry if this is too into what your game is, but are those... separate things usually?

[cunning hornet]

it's supposed to be a twinstick shooter, so whenever the character rotates they will also shoot (like Geometry Wars)

[flat coral]

Actually that's my advice is to break this all up into different events / functions. Like unless I'm wrong the last screenshot is just literally the exact same thing 4 times. Whenever you find yourself duplicating logic like that, it's an indication that you should consider making it a function

Also iirc input axis events fire once per tick while the axis is held right? If the tickrate is shorter than those delays, you could run into weird race conditions

[umbral ginkgo]

If anyone is familiar with unity, in it is a system where next to each game object (actor in ue4) is a check box which enables/disables the game object it belongs to. When it is disabled, the game object is not visible and cannot carry out any scripts attached to it. Is there anything similar to this in unreal engine?

[cunning hornet]

Okay, I will try to make this into a separate function!

[flat coral]

Honestly, if you've got a piece of code that has a bug AND needs a refactor, just do the refactor. Even if you don't find the bug while refactoring, it'll be a lot easier to debug after you clean it up.

(And half the time, you'll fix the bug by accident and not even know what happened)

[cyan token]

Can i switch to c++ as i learn it more if i want or is it all one?

[flat coral]

You can defs mix and match blueprints and C++ in the same project. In fact, I think most have to: Some stuff like the UI system doesn't really have C++ support, or at least it didn't when I first looked into it a looooong time ago.

Now what I'm NOT sure about is what actually changes when you pick C++ vs Blueprints when creating a project.

[earnest tangle]

afaik all it does is it just creates some source files for you

[quick lance]

are timelines the only alternative to event tick if you want to do something very often?

[earnest tangle]

nothing of actual consequence differs

@quick lance just use tick if it needs to tick

[winged sentinel]

Would anyone know how to implement look acceleration? I tried a time line and a float curve and neither do look acceleration correct

[quick lance]

Guess I should've clarified, very often in a specific scenario that might not happen very often. For example, a knockback. It seems bad to check every frame if you're being knocked back when that could potentially not happen for a multi hour play session

[earnest tangle]

That's a very very cheap check if you use a bool or an enum or something

[spark steppe]

also timers exist

[earnest tangle]

you can also disable and enable tick, no reason to use timers to emulate it

(and unless you manually uncheck the checkbox, all your actors tick by default)

[spark steppe]

but it can get quite messy with a lot of frequent things

[earnest tangle]

Yeah it's one of those "it depends" things :)

[spark steppe]

and if you don't want to do something every tick, timers are way cleaner to implement

[quick lance]

so far I have basically nothing using tick, and i was hoping to keep it that way.

[earnest tangle]

something like checking if the actor should receive some kind of knockback physics effect or such based on if(BeingKnockedBack) { stuff } is so cheap you won't even know it's there

[flat coral]

Actually that brings up a question I had the other day, which is, if a tick pipes right into a branch to nothing, is that as cheap as it sounds?

[earnest tangle]

Set Actor Tick Enabled can also be used to manually turn it on and off at runtime if you find it useful to be able to do so

[quick lance]

that makes sense. My ultimate goal with that question was in search of a way to have my character move forward during an attack animation. like dark souls or DMC

[earnest tangle]

@flat coral yes, empty branch does nothing, so the cost of this would depend on what the condition for it is

[flat coral]

Let's say it's just a boolean on the class (of course you could disable tick in that case but y'know)

[earnest tangle]

Yeah boolean checks are very cheap to do

[azure smelt]

Hey can someone please help me with some blueprint stuff? I'm using a plugin called "VRExpansionPlugin" and I am trying to set up the player pawn in my game. I copy pasted the player pawn from the example project but the blueprints are coming up with errors. My first problem is that the Variable type "Enum MovementMode" Doesn't exist in my project but does in the example project. I couldn't find where this Enum came from or how it was made. What do i do here? I would really appreciate a hand.

These are the nodes from the example project.

These are the nodes from my project.

Don't worry haha i found what i need

[flat coral]

For future reference, I always like to port the example project over in its entirety, and then delete what i DONT need

[mint grove]

hello everyone im trying to set up 2 handed weapon handling for my assault rifle ive followed vr macros video to the letter but it doesnt seem to want to work i cant get the overlap to work

https://blueprintue.com/blueprint/__b2zdlt/

[velvet dagger]

I feel bad and lazy for sticking to the 3rd person template, does it make me lazy if I were to finish my game with the main character built off of a template?

[rapid robin]

No 🙂

[velvet dagger]

I really hope that's the case because I don't want people to play my game and be like,"Wow this character is literally built off the third person template? Man that's low quality AND low effort"

[azure smelt]

I prefer the opposite

[azure smelt]

It depends, if you alter the movement speed and use a 3d Modelled character who isn't the UE4 Mannequin then no one will notice.

[brazen merlin]

there's a lot of parameters inherent to the 3rd person character, the default is pretty floaty imo and the movement alone does a lot to make it feel like something else. Animations and a different model change that even further, and ofc the camera fov and its motion. There is in fact a lot to adjust without adding that can make it feel incredibly unique

[velvet dagger]

Thank you guys a lot for the feedback and the tips :)))

[flat coral]

So I could specify, the reason I port the whole thing then delete is so I can leverage the reference finder tool when deleting, it'll automatically make sure the deletes are safe

So I don't accidentally remove something I actually need

[lucid ingot]

LOL im sorry but as a dev this looks like a BP to me...

[gusty axle]

you can optimize it by removing everything but first and last graph lmao

[lucid ingot]

its weird how we think now xD hahah

[gusty axle]

the filth of ue blueprints 🗿

[winged sentinel]

im trying to use a timeline to make accelleration only for my xbox controller, and it works except when i release the stick im still spinning

is there a way i can get it to scale up, just like games with aim acceleration?

[lucid ingot]

ue5 or 4?

[winged sentinel]

ue4

[lucid ingot]

issues like this are fixed with enhanced input on ue5.

but let me look

[winged sentinel]

ya it def needs fixing im glad its in ue5

[lucid ingot]

on finished your never completing a cycle

it will always update the rotation and never finish

[winged sentinel]

i see, i thought stop was suppoed to take care of it

[lucid ingot]

look at your graph 🙂 your adding the yaw to the update

thats a crazy way to calc accel tho!

[winged sentinel]

lol ik i tried this too but nothing happened

[lucid ingot]

what are you overall trying to accomplish?

[winged sentinel]

like in halo when you turn the joystick all the way to the right or left, it will gradually increase

[lucid ingot]

acceleration over time with stick input?

[winged sentinel]

not just linear input

[winged sentinel]

yes

it makes it a lot easier to aim with a joystick, at least for me

[lucid ingot]

man. I remember my xim4 days trying to prevent this LOL

i remember a solution

let me see if i can find it

[winged sentinel]

thank you, ive been like scanning google for hours now lol

[gusty axle]

Is it a good way of "item using"?
It just check the item player has in hand and does the code

[lucid ingot]

the only 2 stupid things i can find is ARG ( the shit free plugin) and https://www.unrealengine.com/marketplace/en-US/product/gamepad-aiming-aim-assist-deadzones-and-more..

where did i find this video.. this is going to drive me nuts!

[vocal sand]

hey sry yall, i came for some expert advice, i know nothing about the program, but have a friend who is taking a class and going insane cuz he cant figure out a problem that is probably easy for yall

[winged sentinel]

that plugin looks exactly what i need but $20 for it is a lil steep lol

[vocal sand]

he is trying to have his character step onto a platform and then the platform forces him in a certain direction, anyone that can help ill pay

but need asap, like let me pull you into disc to explain

[winged sentinel]

wait is the shit free plugin AGR PRo

[lucid ingot]

Yeah! there is a free one of the internet. the guy has like 46 subs on youtube

[vocal sand]

ill pay 50 right now (just dotn tell him im payin gyall)

[gusty axle]

Like a conveyor?

[lucid ingot]

LOL YES!

[winged sentinel]

lmfao

[vocal sand]

again im sadly a smooth brain when it comes to this, and dont know any of the terms

[winged sentinel]

i may or may not have that plugin installed lmfao

[gusty axle]

Well literally conveyor like you said, you step on it and it moves the character\objects

[lucid ingot]

the coding for that plugin will ruin your game.

[winged sentinel]

thats scary to hear

[vocal sand]

ok, with that his "conveyor" is based of an arrow that slowly spins, and hes trying to force the player to move based on the current rotation

[lucid ingot]

a lot of things cause minor issues, a lot of replication issues.

[winged sentinel]

im already knee deep in it lmfao, but i dont remember seeing it had aim accelleration

[gusty axle]

You can make a box collider that has the same boundaries as platform itself (same size basically) and when any object overlaps the box it adds it to an array. In tick function make ForEachLoop, get object location, add to object location platform direction vector multiplied by DeltaSeconds and multiplied by Speed. If object ends overlap just remove an object from array

[lucid ingot]

ahh man, you poor soul. You got sucked into a endless abyss.

[gusty axle]

But it depends on your code, its just the simplest solution lmao

[lucid ingot]

The way its coded, you either do it his way, or nothing works btw.

[winged sentinel]

at this point i could probably just rewrite the sections and remove the plugin, i started this project so long ago as a noob and now i can write everything no problem

except for god damn aim accelleration lmfao

[lucid ingot]

I would 100% recommend this. Drop that code immediately. Down the line you will thank me for telling you this

[winged sentinel]

yes i will, tbh its running stable for now so ill put it on my list and avoid using it for new mechanics

[gusty axle]

wait hol up dont remove it from array, just use Find function, get item index, SetArrayElem and set element as empty, then after ForEachLoop completes use RemoveItems for array and dont plug any object, it will remove all empty instances w\o interruptions and errors hh

[winged sentinel]

ive already had major issue with inventory items not appearing correctly on screen, items not attaching to player state etc

[lucid ingot]

ARG pro is like adding the crouch and uncrouch options in ue4. there is no client/server options

you have to do it all yourself with even more code.

[winged sentinel]

could it be killing my framerate? I randomly get worse frame rate out of no where

like ill go from 80 to 40 back to 120

[lucid ingot]

that i have no idea.

[winged sentinel]

eh i gotta check it out then maybe im doing too much shit on tick

[lucid ingot]

but like i said, write your own tagging system, write your own movement component. forget what he taught you. recoil is a breeze.

[winged sentinel]

100% ill flush it all out, ive noticed some weird stuff with it, its okay for messing around but not any production work

[lucid ingot]

Don't get what i am saying twisted tho. He is an amazing creator. I am not bashing him. BUT so many flaws i seen as a novice, that i can not continue using anything created by him. I followed Dev squad to get me to my 100%

[winged sentinel]

true dev squad got me started as well

[lucid ingot]

https://docs.unrealengine.com/4.27/en-US/API/Editor/UnrealEd/FCameraControllerConfig/

hmmm

MovementAccelerationRate

[winged sentinel]

interesting thats on the camera controller

[lucid lynx]

Is there any reason why an AnimBP's BeginPlay event would fire twice? I first thought it was just two of the same actor, but it's not that.

[winged sentinel]

would that be exposed to bp?

[cursive barn]

hello, everythings gone to not nice

so lets say im making a game, right? movements ok you can look around properly blah blah yadda yadda

Then i notice "oh shingleberries on a bush, my health regen script isnt working

[brazen merlin]

thats quite a jump from the template "blah blah". so that means you have a health/damage system right? and that works regardless of regen?

[cursive barn]

yeah

have a little box to test health system

[brazen merlin]

so whats the problem with the regen?

[cursive barn]

no idea

i think its calling upon an unknown variable but i checked and its definitely calling upon the right variable

[brazen merlin]

well there's got to be some idea of the problem

throwing errors? nothing happens? works too well?

[cursive barn]

well i think the problem is that the engine is calling upon the wrong variable, cus i have it set up as if "if SHP=0 then wait 2.5 seconds then add 5 to SHP"

[brazen merlin]

alright, well i guess its time to post the bp in question

[cursive barn]

im opening it up the bp rn

cus ive kinda set it aside

worked on other stuff like animations and weapons

ok

so

[brazen merlin]

glad to hear it works?

[cursive barn]

nah

[brazen merlin]

lol ok

[cursive barn]

here

i havethat

[brazen merlin]

alright, well a tick and delay is not great

not sure where that picked up from, and the sequence i assume was doing something at some time

[cursive barn]

im bringing up the damage node

[brazen merlin]

to understand - you want to allow health regeneration when health reaches 0 right?

[cursive barn]

when shields reach 0 i need it to wait 2.5 seconds without damage to self to regen the shields

[brazen merlin]

because its me, ill suggest you use (maybe also learn) timers

when shields reach 0, which fires off the branch, you set hp and shield, thats fine, after that you can call a set timer

that timer would run for 2.5 seconds like you want, and once it does, it would fire an event or function (whichever you prefer) to start the health regen

i guess you could do it with tick, but id recommend a timer for the regen as well

[cursive barn]

ok, ill try that

[brazen merlin]

let me know if ya get stuck

[cursive barn]

oh i found it

when calling the function, the game needs the shields to be less than 0, but 0 is the base number

nevermind

im dumb

its asking for the item to be less than 0

[brazen merlin]

where?

oh i think i see where

[cursive barn]

yeah

[brazen merlin]

yeah, i guess a =< to get that

[cursive barn]

i just set the number to be .99

[tulip mason]

Yeah shouldn't be equal or less than zero sign thingy

Or yeah that

[brazen merlin]

i think it makes sense to check for less than or equal to because you only want this firing if it is 0 (or less in certain cases)

suppose you could also change the number in the < to 0.01 and might be good

[cursive barn]

i made it fire if the number is less than 1

therefore the shields would recharge completley

i need to add a delay tho

[brazen merlin]

alright..

sounds like you got this

[cursive barn]

oh trust me something is bound to go wrong

but this was helpful, thanks

actually

quick question how do i do a "check if a function is active" sequence

[brazen merlin]

uhm

like?

[cursive barn]

If function "Damage Modifier" is active then dont fire current function

i was gonna use a branch

[brazen merlin]

dunno what damage modifier means as a function

or how its call

sounds like it would be a one off sort of thing

[cursive barn]

here

[topaz badger]

set a boolean when that function is active

and then in order to break out of that current function, use a gate

[cursive barn]

do i use "is tracker active?"

[topaz badger]

gates dont have anything like that

[cursive barn]

im confused

i shoulda just used c++ but no i had to go with the drag and drop mess

the blueprint literally looks like multicolored spagetti

[gentle urchin]

once gotten used to, bp's are great for quick iterations 😛

[cursive barn]

it still looks like multicolored spagetti

[gentle urchin]

Proper organization handles that 😎

[dreamy basin]

https://youtu.be/QKFOH7vEGMM
I'll be quick. I was watching this tutorial, and @ 15:30 there is this node to get the player view called "Get Player Viewpoint". I cannot find it in my UE4 4.26.0. Any idea why? How can I solve this?

Sorry if there's anyone who can help me out or show me how this blueprint is made would be a big help for me

[brazen merlin]

windows > color filters > grayscale 😛

[brazen merlin]

that's a custom function, you can see it in the left side panel area under functions

[cursive barn]

well then itll look like grey spagetti. i dont wanna be colorblind

[dreamy basin]

ya but in this tutorial he is not showing the nodes how he did that custom function but in his comment section he had tagged a document for the get player view point
i am new to unreal that y i dont knw how to create that
https://docs.unrealengine.com/4.27/en-US/API/Runtime/Engine/GameFramework/APlayerController/GetPlayerViewPoint/

[icy dragon]

Learn some cable management xD

[cursive barn]

i have

[jaunty pond]

hello guys is there a way to change the weight (mass) of skelatal mesh

[trim matrix]

hello folks, if there's any mixed BP/Cpp users here, can you enlighten me on how BP and C++ mixes together? or advanced BP users, why BP's your preference

[icy dragon]

Probably, but mass numbers often don't make sense in Unreal.

[gentle urchin]

Isnt there a set mass?

[jaunty pond]

Its not doing anything

[brazen merlin]

yep, that'll change change the number 🙃

[gentle urchin]

https://answers.unrealengine.com/questions/98625/setting-the-mass-of-an-object.html

[jaunty pond]

ohh thanks for advice ill try this ❤️

[icy dragon]

Start with something like this in your C++ header.
For variables

UPROPERTY(BlueprintReadWrite, EditAnywhere)
FString InheritedVar;

For functions/events

UFUNCTION(BlueprintCallable)
void SomeFunction();

The rest is C++ business as usual.

[trim matrix]

ah, no no. I mean how you usually work with both of them. percentages of Cpp to BP, where and how you use them, etc

[gentle urchin]

Bp is my preference for iteration speed ! 😄

Runs circles around c++

[trim matrix]

yep can relate with ya there but i've asked the Cpp folks on their opinion and they did say Cpp's better for a larger mainframe/project for multiple reasons

[gentle urchin]

Yes,

Cpp is way faster. Way more optimized

[icy dragon]

Well, C++ for making custom function or something that needs to be done on C++ tick for performance reasons, but usually that goes after I have solid foundation built from BP

[gentle urchin]

And gives you s ton of tools thay bp wont, atleast not out of the box

[icy dragon]

Most pro people use BP for prototyping, and use that as reference to translate into C++ code.

[gentle urchin]

Any heavy operation should likely be moved to cpp, and probably most of the other functions aswell

[trim matrix]

so basically create the functions required in c++ instead of a spaghetti hell in BP

[gentle urchin]

As i just experienced myself when working on my AI, anything counts

[icy dragon]

In most part, yeah. BP can also useful to handle some hard tasks in C++, like asset loading.

Expect a lot of crashes when loading assets in C++, wrong reference and boom

[gentle urchin]

my current workflow is make the stuff in bp, Then translate that to a parent class written in c++

[trim matrix]

true that

[gentle urchin]

About 90% is moved to cpp

[trim matrix]

doesn't that mean you're doing twice the work?

unless it's prototyping

[gentle urchin]

Indeed

It is

Im probably very inefficient at it aswell

Litteraly just sat down started with c++, very noob at it

[trim matrix]

same!

[gentle urchin]

(Yet gained 80% performance purely from the transition)

[trim matrix]

hence me asking both cpp and bp chats their opinions

[icy dragon]

At least BP have faster iteration time and easier debugging, so at least you have solid reference to translate.

There's also Nativization but eh...

[gentle urchin]

Exactly ^

Heh screw nativization

[trim matrix]

nativization? heard of it but never looked into

[gentle urchin]

Its deprecated in ue5 tho isnt it?

[icy dragon]

Better not spend your time on it :P

[gentle urchin]

Had a lot of issues

[trim matrix]

mmm...

[icy dragon]

It is.

[icy dragon]

Think of nativization as a sloppy decompiling from a sloppy reverse engineering tool

[trim matrix]

i see

"I encourage BP usage in my project but with some ultimately strict rules, for example core-gameplay loop related things can not be coded in BP. Frequently spawned, tickable things can not have a BP base class
BP usage for coding/logic is only an option for me if it's not causing a performance impact and if it is faster to achieve than C++"
you agree with this?

[gentle urchin]

Im not as strict, but it makes sense

As I said, at the end of the day everything has an impact

[trim matrix]

yeah, just gotta balance out how it impacts

[gentle urchin]

Wether you can take the cost or not is sort of up to you and your project

[icy dragon]

Make sense, but I personally won't go that strict. BP can still harness C++ tick without hogging with its own tick

Just make sure not to use Event Tick in that case.

[trim matrix]

timers would work perfectly, right?

considering you can just delete/remove em

[icy dragon]

Depends on how frequent it is.

I've seen some people tried to use insanely low looping timers just to circumvent "tick is bad" statement, not knowing it's worse than that.

[gentle urchin]

The entire premiss about tick being bad is mostly made for newcomers abusing it for no reason tho

[maiden wadi]

Even blueprint tick is perfectly fine in a lot of circumstances. I use it quite often for widget animations. Tick only really needs to be avoided in the sense of how many of something is going to be ticking at once. If you're making a city builder, of course you want your 300 citizens to tick in C++. But the one graph display for food production is perfectly fine to tick in BP most likely.

[gentle urchin]

Tick has its purpose

[icy dragon]

I'd still give the widget anim load to C++ tick (I used benui's tweening plugin and added BP support on top of it)

https://github.com/TheHoodieGuy02/UE4-UITween

^ I have yet to work on making the functions more "universal", atm you need to reparent the widget to use them

[maiden wadi]

I'd probably move it to C++ at some point, but there's really no need to stress over it. If your game has performance problems, fix them. Otherwise you're just wasting time that can be spent making another system. Iteration is an important tool that isn't expressed enough to newer developers.

[gentle urchin]

Dont optimize untill you need to -ish

Even then, learn about the profiler, figure out the culprits, and go from there

Its hard to optimize if you dont know the cause

[maiden wadi]

Sometimes it's hard to optimize even if you do know the cause. 😄

[gentle urchin]

Hehe yepp. Some operations are slow no matter what

[spark steppe]

mind to elaborate what you added on the fork?

[icy dragon]

Mainly exposing functions to BP.

[spark steppe]

i see

does it work on 5.x?

but from what i can see, it only allows one tween at a time for the BP nodes, right?

also wtf did he implement all easing methods on his own Oo

maybe hoodie, if you want to add some polishing to it https://docs.unrealengine.com/4.26/en-US/API/Runtime/Engine/Kismet/UKismetMathLibrary/Ease/

[icy dragon]

I don't know, but it's fairly simple, it should work.

[maiden wadi]

@swift pewterWhen you break a struct in blueprint, you're creating a copy of all of it's properties. What Squize is saying is that you need to get the copy's array, modify it however you want and then call SetMembers on the struct to use the copy's array to set the array on the original.

No. On the original struct, call SetMembers. You can click on the SetMembers after creating it to checkbox the array property. It'll add the struct's array as an input pin and you can set it there.

That won't work either. You're creating a new array every loop from the struct's break and adding one thing to it. Then getting the struct's own array and setting it's array to it's own array each loop. This should probably be dropped into a Function where the HitActors array can be copied to a local array of pointers before the loop, and the loop can add to that. Then at the end of the loop, you can set members in the struct.

Structs are probably one of the most fantastic things in Unreal. But using them in Blueprint is downright infuriating unless you're just pulling data from them. 😄

[lost pecan]

ive added a new component to one of my native classes.. im initializing it in the constructor as usual
the component is showing up as expected in the first blueprint class that inherits from the native class.. i can select it, see its default values, etc. however, in the child blueprint class the component is showing up as just an empty reference, and its also reading as nullptr at runtime

making a new child blueprint class seems to fix the issue, but is there any way i can fix it for my existing child class? ive tried duplicating it, without luck

[eager ridge]

hey gyus little question here but i cant get it to work 🤷‍♂️

i wanna do a super simple "set bool at animationstart and end" thing but this time it wont work and i dont know whats the problem.

as i said its rly simple but something dont wanna work here ...

well it turns on animationstart to true like it should but at tzhe end it wont turn back into false

thats the whole problem here and i dont get it 🤷‍♂️

unrealdocs and the forum dont have anything useful here for me

[cold raft]

Is there a way to call a function by name from Blueprints without using a SetTimerByFunctionName?

[earnest tangle]

Don't think so. Any particular reason why you want to do this? It frankly sounds a bit iffy

[cold raft]

I have a list of strings (what is mouse hovered over) that map to what function is called - eg Plant > fnHarvest, Ore > fnMine, Tree > fnChop

[wheat herald]

@atomic salmon #blueprint message

[earnest tangle]

@cold raft ah - tbh this sounds like a case for polymorphism, but if you only have a small number of them you might have a simpler time with a switch

[cold raft]

Thanks, I currently use a nasty IF statement which works, and isnt that performance limiting but it would have been nice to have a callFunctionByName

[obtuse herald]

Already heard of Interfaces?

[spark steppe]

jesus christ

switch on string is a thing

how did you even take this screenshot? 😄

[cold raft]

for my code I need 8 screens

[spark steppe]

yea i can tell

[cold raft]

🙂 Thanks all, yes I have heard of interfaces but was focused on getting things running first.

[obtuse herald]

Yeah try to use interfaces instead of trying to call a function by name

[spark steppe]

also event dispatchers are a thing

so what ever the mouse is hovered over, could subscribe to an "onInteraction" event on the player

which just generically can be fired by clicking or something

[obtuse herald]

Honesty there are so many ways

[spark steppe]

yea, anything is probably a improvement at this point 😄

[atomic salmon]

@wheat heraldif you want to spawn a target actor in your level and then have the actor re-spawn itself in a random location when it is being hit by a projectile, the best thing is to have the target actor manage its own life. So the target actor will be spawned once by the level blueprint (or it can be placed in the level directly). Then as soon as it recognizes being hit be a projectile, it spawns another instance of itself somewhere else and then destroys itself. This is the cleanest approach in my opinion. Or you can define an invisible target manager actor which spawns and re-spawns target actors as needed.

[spark steppe]

why not just teleport the actor?

[azure smelt]

Hey everyone, I'm working with quite a complex blueprint system for a VR pawn. When I'm trying to fix some errors with it but when I change a variable type or add a new variable the engine crashes? what do I do?

[atomic salmon]

@azure smeltwhere is it crashing? Can you show the crash log? You can try a project clean-up.

[wary shadow]

hi, does anybody know why if I open the project directly from Unreal there are these errors in the BP and therefore if I play it crashes. If instead i build the project from Visual Studio everything works properly :/

[azure smelt]

Yeah give me a sec

@atomic salmon I checked out these lines in VS and they seem fine.

[finite flax]

Hi everyone, quick question if i may. How can i remove the selection icons above? And force it to play in VR immediately without having to choose between the different game modes?

What you’re seeing right now is from Collab viewer, i know a regular VR temp already exists but i need to use this, thanks for understanding

[atomic salmon]

@azure smeltdifficult to help as the crash seems to be coming from a custom plugin (probably a null pointer somewhere)

--> UnrealBodyPlugin

[azure smelt]

I will try a debug tomorrow and see if something comes up. I don't think it is the plugin in though. I will disable the plugin and see if I can fix the BP errors.

[atomic salmon]

@azure smeltwell it looks like the plugin is crashing probably because of a missing reference to an animation instance

that's what I can tell from your screenshot above

but not having seen the code it is hard to be more specific

[azure smelt]

It's an IK for fingers, body, hands and head in VR. I set it up on a simple pawn and it was working fine except the head was rotated 90* so I decided to follow some further instructions and copy a file of a Pawn.uasset that is based around the "VRExpansionPlugin", to see if the same error would occur.

The Vive Pawn from the VRExpansionplugin is quite heavy with blueprint nodes and the errors I'm trying to fix aren't even related to the "UnrealBodyPlugin"

I think to fix it I will need to disable the UnrealBodyPlugin, Then edit the blueprint nodes so I get 0 errors then re-enable it.

I appreciate the input, you might be right.

[atomic salmon]

@azure smeltyou can set a breakpoint before the crash and back-track from there. See if you find what is causing the null/invalid pointer.

[quick grove]

guys do u know how can I just cast a widget into a function?

I mean... which object should I choose?

[atomic salmon]

@quick grovenot 100% sure you understand what Casting means. What are you trying to achieve?

[quick grove]

I need the "As ... Widget" to use the variables inside the function

[atomic salmon]

@quick groveI assume you want to "talk" to a widget. For that you need a reference to it. The reference can be stored in a variable at the moment the widget is created or it can be retrieved in other ways, but it is hard to tell from what you posted above.

[quick grove]

I tried to cast the widget and create a variable in the ThirdPersonCharacter BP, then I reused that variable here, but it didn't work!

[atomic salmon]

@quick grovein general: you create a widget from within your character, you store a reference to the widget instance (return value in the Create Death Widget above). That reference is your widget, so you can use it to talk to it directly, there is no need to Cast it.

Casting is used when you have a generic reference and you want to make it specific, but this is not your case here.

[quick grove]

ok, thanks I'll try, because I'm not using the Create Widget just because I create an event that create that for me, and in that event I set "Run on owning Client" to show the widget only to the character who died

and not to all the other players in the server

this is the entire function

[atomic salmon]

@quick groveUI elements are supposed to be local to the client anyway, but the same principle applies.

If you still have troubles it is more a question for #multiplayer

[quick grove]

ok thanks

[hasty river]

Hey! Does anyone have some idea how can i make that the player squeeze between objects like in this example ? https://www.youtube.com/watch?v=qC5KtatMcUw 3:39

[spark steppe]

that's just "normal" movement, like make an animation sequence and control the playback speed with the player movement

[median phoenix]

Hello. Is there a way for the random integer to return the same number? I tried doing from stream but with no luck
I need both of the montages to sync with each other
https://i.imgur.com/BtAEzRp.png

[willow phoenix]

@median phoenix just promote it to a variable

[lucid ingot]

if you are trying to get 2 anims to sync, why aren't you doing this inside your animbp with layered blend per bone? You can do this by making the montage a slot and blending with the anim.

[willow phoenix]

i gues atomik got a good point here 😄

[lucid ingot]

lol i spent a week doing this, 2 weeks ago xD

[median phoenix]

But I need these montages for firing and stuff

[lucid ingot]

Yes man

hold on

ill show you. its simple af

[gusty axle]

bruh

blueprint interface curled up in the corner lmao

I remember ive did something like that before but using Case

[lucid ingot]

choose a slot

blend the slot with your locomotion

and it will sync.

or you can do it this way

[median phoenix]

Thank you

[lucid ingot]

If you have an issue do not hesitate to ask. trying to understand this the first time was like learning chinese

[median phoenix]

I have so many issues that at this point it'd be a wiser choice to hire a programmer, but I keep trying...

[lucid ingot]

i feel you bud! Don't give up tho! I went from not knowing a damn thing to atleast understanding things. Once you play around with things, it becomes second nature to you 🙂

Anyone did i calculate velocity correctly here?

[night flare]

Quick question: I want to define a blueprint which only contains a structure as variable, so I can create as many subclasses as I wish only to hold different values for that structure. Is there any way to do that without using actors? At the moment, I have to spawn an actor, use the stored structure values and then destroy the actor which seems like a bad way to do things. Suggestions?

[spark steppe]

you can extend UObject

[soft mulch]

Hi! Try looking at DataTables, maybe they would be a better option

[spark steppe]

however, why do you even use a struct if you have an object?

[night flare]

I'm working in blueprints

[night flare]

going to check that, thx

[spark steppe]

yea, but you can still just define variables in said blueprint object

be aware that data tables can only be changed in the editor, not on runtime

[night flare]

yep, suits me perfectly 😉

[spark steppe]

then they might be the best choice

[night flare]

Job done, thx folks 😉

[zealous moth]

when i start my project, I get several warnings that will disappear on compile. The annoying part is that they always reappear... is there a way to remove them?
for context, I borrowed some logic from another project and pasted it in.

[tawdry surge]

In general ue doesn't like that. If you remake the things listed it will stop

[void needle]

how can i use my functions?

in bp

[earnest tangle]

What functions?

[void needle]

a new function

i cant add to event begin play - play function etc.

[tawdry surge]

If it's a function you made in BP then you just pull off an execution pin and type the name of the function to get the function call.
If you made it in cpp then you have to expose it to BP

[void needle]

i got it from one of plugins

and it says i cant use this function because its not blueprint callable

it says that graph isnt editable

so i cant set it to bp callable

is there any other way to call functions without adding them ?

[tawdry surge]

Then it's probably not meant to be used in blueprint.
If the graph isn't editable it means it's read only. That wouldn't stop you from calling it tho, just keeps you from changing it

[void needle]

how can i call it then?

[tawdry surge]

That picture is from inside a function, so I'm not sure what you mean, unless that's just a random thing you made..
If it isn't meant to be called in BP then you're probably supposed to use cpp, but you can always make it BP callable and see what happens

[void needle]

i cant make it bp calllable

look at the graph

that is what i was sending

that i cant even edit it

o

h

you mean to make it editable through vs

[earnest tangle]

Why do you need to be able to call this function anyway? It seems it must be part of how Dungeon Generator works

[void needle]

its the start of the dungeon

im not so sure, maybe i dont need to call it

but without calling it, nothing happens

[earnest tangle]

Yeah you probably don't if it's not bp callable

[void needle]

then how can i use it

[earnest tangle]

I would assume it's meant for you to be able to provide your custom implementation to choose the first room, and it's just used by default by the plugin

[void needle]

sorry for probably stupid questions

[void needle]

yeah, thats the thing

i added my first room

but it just doesnt spawn

[earnest tangle]

If the plugin isn't doing what it's supposed to you probably need to consult its documentation, it's pretty hard to say because I've not used this one

[karmic shadow]

I got a group of AIs and when they run towards a certain point.... they collide with each other and the running animation is disturbed... Is there any way to solve this?

[void needle]

maybe i can send you the plugin?

[gentle urchin]

^ would be better if you studied the plugin/documentation yourself. Thats quite a big ask.

[drowsy flame]

hey guys how consistent is timeline? Sometimes it seems it doesn't work for me

[gentle urchin]

Pretty consistent

Show some code :p

[drowsy flame]

its bp no code 😄

[tawdry surge]

BP is code

[void needle]

i looked through whole doc

[drowsy flame]

nvm turns out I had to use play from the start and reverse from end. Else it would snap to position when I was going back and forth between two positions

[lost solstice]

I know you cant do multicast delegates in blueprint for unreal engine but what would be the closes equivalent that would have similar functionality to that of a multicast delegate?

[safe iron]

Hey guys, I have run into a problem with AIs and guns

[winged sentinel]

@lucid ingot enhanced input is gonna work I think 4.27 has it exposed for blueprints, it’s experimental but im sure it’ll be okay to use

[safe iron]

So as you can see I am casting to the First Person Character to get the rotation and the Forward Vector the gun should fire the projectile, but I have made AIs use the same character class as the player, the player uses a child actor of First Person Character and AIs use child actors of First Person Character as well, this to make it more simple for me to code Health and Death, as well as bots for multiplayer modes, but when AIs try to shoot, the projectile gets shot in the same direction the player is looking at, I was aware of this for a long time and I found a temporary solution for it, which was not casting at the First Person Character at all but instead to fire the projectile from the Scene I have put in the weapon actor getting the forward vector and rotation of the actor, the thing is that it didn't work, the projectile was fired sideways so I had to adjust manually the rotation in order to make the gun shoot forward, but this method is inaccurate and unpractical, so my question is if is there a way to cast to the First Person Character actor or child actor that is using the gun, whether it is an AI or a player, and get its rotation instead of always getting the player's rotation? I know this issue is caused by the node "get player pawn" being the target but every other targets I tried ended up giving an error or a warning, I also tried setting a variable as target and setting the value as self everytime an entity used a gun, the projectile didn't even spawn with this method

Also sorry if I have not been 100% clear, I am not english, I am italian

[faint pasture]

Is there any sort of data source I can write to at runtime? I need to make something analogous to a map editor, but it's more of a texture editor. I think my options are either making an editor mode Plug-In or just making a level for doing this. If I can write to a data table or data asset at runtime, that would be what I need

[winged holly]

how to get name of current element of an BP enum ?

'enum to name' outputs wrong name

[faint pasture]

Are you sure it's out putting the wrong name, what is it outputting?

[fossil crystal]

GM, VR trying to modify my Level_BP so i can teleport inside (green nav mesh seen on left) What am i missing ? its not working on the right

[winged holly]

I know but I want to map value to its name

that 'enum to name' should output G3A3

🤔

[faint pasture]

@winged holly convert to string first.

[safe iron]

help?

[fossil crystal]

am I posting my VR issue in the right place?

[winged holly]

@faint pasture lol enum to string works fine, logically they should output the same

[faint pasture]

Yeah that's freaking weird.

[faint pasture]

#virtual-reality if it's VR specific

That sounds like a navigation problem though, what's different between the right and left? Did you make your level bigger?

[fossil crystal]

thank you

nothing is differnt, just moved around the navmesh

[faint pasture]

Did you move the navmesh or the navmesh bounds volume

[fossil crystal]

it was a level BP from a NON vr game

[faint pasture]

Have you tried rebuilding navigation?

[fossil crystal]

so im assuming i need to do something specific to it to make it VR compatibly

have not, unsure on how to do that. ill google

[faint pasture]

Just hit the build button up top

[fossil crystal]

thank you trying now

its putting it on the top

[trim matrix]

https://www.youtube.com/watch?v=WdGg5QYybJU Good time. Need tutorial how to make tentacle similar to this in video. Thanks in advance.

[fluid compass]

Hi I'm trying to set the actor location and rotation of a primitive object anyone have any idea why the node is not working?

this is for AR i set a pin then set the actor location of the primitive object to the pin's location

level is an actor object that holds the "starting platform" which is a primitive cube placed in the level and has children which are the remaining platforms

[trim matrix]

this is my add item to inventory function

[safe iron]

Nvm found a fix by myself... probably...

[wheat herald]

So in the level bp I made it spawn once from "begin play", an then in the actor bp i litteraly copied the same nodes but changed "begin play" to "event hit". Basically Event hit > destoy actor > spawning nodes ... and it seems like it works. Thank you

[atomic salmon]

@wheat heraldexactly, well done!

[calm mesa]

How in the frick do you disable automatic tangents on newly created spline points?

all I want is to be able to add new spline points without being given a completely different tangent every time

[gentle urchin]

You can set them to linear if thats what you want

[calm mesa]

that doesn't solve my issue

as soon as I create a new spline point by alt+clicking, no matter what I do or how I set it up, it's immediately gonna calculate a new tangent first thing

I want it to keep the tangent of the point before it

[gentle urchin]

think you'd need to manually do some work with the splinecomponent then

[trim matrix]

Make an object and create the data structure yourself on this class. Have this object just exist in the background of the game somewhere. You cannot write to data tables at runtime.

[trim matrix]

It might be helpful to think of it something like this.
NameType variable - back end data storage/transfer. NameType variables only support basic text characters. Alot of back-end systems will take NameTypes. This is because name variables are more basic and do not have all the extra text features that are unnecessary for simple data storage.

StringType variable - any text that a user will input into the game. String variables are designed to support anything a user could type pretty much. A example for when to use a string: if your game allows you to set a HeroName for the main hero, it would be best to store that HeroName in a StringType variable. That way the custom HeroName could technically support any text characters the player tries to type. This also applys for things you type into the editor. Its important to remember that you typed the EnumName G3A3 into the editor.

The NameType variable can be kind of misleading in name lol. I hope you might see why if you want to get that user inputed value of G3A3 you would need to turn that enum into a string type.

[leaden helm]

Framework question. Making a singleplayer game, need to store variables that stay in memory between map changes. I forget if they should be in PlayerController, or PlayerState ? I also forget where is best to do the save/load operations, likely the same spot I store the persistant variables

[hardy fable]

The Game Instance is usually where that stuff tends to go. Simplest solution for single player + blueprint.

Player controllers can transfer info from one to the next, but it has to be set up manually to copy the data, whereas the game instance is never destroyed ever, so it's always safe

[leaden helm]

Ok that makes sense. Just read player controller and state both get destroyed on level changes. But I'm very likely to have my player switch between a town and overworld level

and likely to have a different pawn in town vs overworld

[hardy fable]

Yeah. Best go with game instance then. Again technically when you transfer from one player controller to the next there is a time to cast from one to the other to transfer state in a function called OnSwapControllers but I don't remember if blueprint has access to this

[leaden helm]

Ok thanks. I've had this sorta thing set up before, but havent done gamedev in over a year 🙂

[brazen merlin]

you could have the same character class with an overworld child and a town child version for whatever specific needs. It would also be better to use a player controller to handle all input logic so its not bound on the character class (although with class inheritance, all input logic could be on the base character class since both children would draw from that)

[leaden helm]

right now I'm thinking town will be a FP or 3rdPerson character, but overworld is a vehicle

[brazen merlin]

design wise, you dont need to worry about different characters until you see the differences needed, i.e., you can just work with the character class in full and then child out later

ah, forget what im saying then lol, didnt know it would be that different

[leaden helm]

np, I didnt specify 🙂

[brazen merlin]

then it would be better to keep input on the controller and not the characters

personally, i would make a function library for things that fetch from the game instance, like inventory or money or whatever

[leaden helm]

Thats a good idea 🙂

I just got the engine code modifications that make my game viable working this morning, so I'm still planning things (mostly in my head, terrible storage medium)

[brazen merlin]

yeah, too bad there's no kind of document that can contain the designs of your game....

[leaden helm]

some ideas are going in a txt file, but others are floating in the noggin

K Thanks for the help 😄

[cold sinew]

What can i use to build a pawn from many parts and when its done will be possessable ...
Other than Collision box

I saw Game call Wrench using Scene Component as socket

[gentle urchin]

As long as you start with some pawn baseclass the rest can easily be modular

[mild flare]

Hello,

having an issue where a muzzle-flash is supposed to be attached to the weapon of a player, server sees the client do the shooting and the muzzle-flash moves along with the muzzle of the weapon - but the client-side (if the server shoots) spawns the muzzle-flash emitter in the world where the weapon's muzzle was at the time but doesnt move along (hope it's clear what i try to say lol) will attach the blueprint and a video of the issue. anyone sees what i am doing wrong?

[cold sinew]

Its Tower crane i want to snap parts and use bolts to attach it and when all parts connected player will be able to possess it

[brazen merlin]

if the end result is the same (that once assembled it has one look) just swap it for an alternate version

[cold sinew]

Ah ok got it

Thanks

[unreal wing]

Hey everyone, does anyone know how to make a third person character jump, bu the camera not move with it? I always found it annoying when the camera moved when the third person player jumped. Any suggestions?

[faint pasture]

What happens if they jump on to a higher elevation then start walking?

The camera has to move eventually.

[unreal wing]

yah that im aware of, but like when the player is in a static jump, the camera automatically moves

[faint pasture]

Well that's because it's attached. Either use lag in the spring arm component or use a separate camera.

[unreal wing]

like instead of using a spring arm?

[hallow harness]

you could just play an animation without root motion

[unreal wing]

hmm that might work

[hallow harness]

on second thought thats probably not what you want, you have to just detach the camera and make it follow on xy axis only then reattach when the jump is finished

[sage magnet]

Could somebody help me out with my task here. I need to detect a collision between a button and another component located on another actor. I've noticed Begin Overlap have an output in a form of "Other Component", but I can't figure out how to use it.

[hallow harness]

dont you just cast to your component

[sage magnet]

Do I have to get the reference to actor first though?

[hallow harness]

no i think you can just cast

try it

[sage magnet]

But that would include every primitive component of that type regardless who have it, correct?

[hallow harness]

yes

[sage magnet]

hmmm, alright, thanks

[winged sentinel]

Quick question, are structs basically interfaces but just for variables so u can share them across multiple bps

[hallow harness]

i would say so

you use them as variables tho

[winged sentinel]

Aha like a black board

Thank you

Are there any extra steps to replicating a strict or is it the usual procedure like any other variable

[hallow harness]

its the same, but make sure to replicate only the variables that you need

i remember i used to have this 50 var struct and i repd the whole thing

it lagged really hard

i only needed to use 3 in the end

[gentle urchin]

No, structs are not interfaces in any manner. A struct is just a collection of variables

[sage magnet]

if you want them to be unchangeable (static)

Honestly, structs are a pain in the ass to deal with.

I'd make a global actor (let's say game manager) and use maps instead

[gentle urchin]

They do require a tad extraz but as long as you keep in mind that any read from it is a copy, and cant be directly manipulated, its fine imo

[sage magnet]

yes well I'm speaking from a perspective of storing stuff and changing it dynamically. It was pain, we moved to maps.

Again, every case is different.

[gentle urchin]

I got the same perspective, yet a totally different experience by the sound of it

Maps are also a hastle in bp

[sage magnet]

you do find, you validate, you implement logic

idk dude, seems easy to me

[gentle urchin]

Tried iterating over a map?

[winged sentinel]

I do have one, but I’m stumped on setting up to work well, what are maps?

[gentle urchin]

Cant directly foreachloop them is just the tip of it :p

[sage magnet]

tldr it's a collection of whatever the fuck you want with unique identifiers.

[hallow harness]

I use maps inside my structs 😎

[gentle urchin]

Map is a container of keys paired with a valie

[winged sentinel]

I see, would that be a solution to shared variables across bps

[sage magnet]

https://tenor.com/view/fnv-fallout-new-vegas-obsidian-ncr-gif-20094969

[gentle urchin]

Global actor with the variables should be way easier

[hallow harness]

i've never tried that

[gentle urchin]

Never used them myself either (never had the need) but the idea is pretty straight forward

[winged sentinel]

Basically I have an AI Director bp and an AI service and I want to get a value from the director to the service

[gentle urchin]

Do the director have a ref to the service?

If so you could just make the service function take the inputs from the manager

[winged sentinel]

this is how i have it rn

i did a cast

but it doesnt replicate those variables

even tho in the director i have them exectute on server

but when i run get all actors of class inside of the service itself it works just fine

[gentle urchin]

Replication.. pff 😅 not my forte

[winged sentinel]

not mine either lol

[gentle urchin]

Gonna dodge it for as long as possible :p

[hallow harness]

ok so i might be able to help

make the variable you need an input

on the server function

then plug it in before when you call it

[winged sentinel]

checking now

[hallow harness]

oh actually

if that doesnt work try adding a delay with value of 0 between begin play and get all players

[gentle urchin]

Doesnt gamestate contain an array of players(via playerstate?)

[winged sentinel]

this is how i have it, still doesnt work

only in offline it works

[hallow harness]

is the actor replicated

i have no clue about the gamestate

[winged sentinel]

it is replicated

[hallow harness]

can you print string the players array

[winged sentinel]

yes

[hallow harness]

it should print out all players through server

i could try it myself real quick

[winged sentinel]

seems like its printing client

[hallow harness]

give me one min

im gonna try it

[winged sentinel]

okay thank you

[gentle urchin]

Exi's answer a while back. Probably still very valid

Through the controllers the pawns should be accessible

[hallow harness]

thats probably what you want

it beats doing it this way

[winged sentinel]

isee it, im gonna try adding it right into the service

thank you the help!

[hallow harness]

i did get the other way to work tho

you just spawn the detector from the character and save it as a variable

[umbral ginkgo]

I had a system which made an array out of actors from a specific class which would choose a random one and then disable collision on all of the other actors apart from the selected one, except I cant seem to get collision to work. Can anyone help?

[winged sentinel]

so its returning the player state but how can i get the actor the playerstate is controlling

[hallow harness]

you want to disable collision for all the others in the loop body, and make sure not to clear the array first if you want to use things in it

[winged sentinel]

my ai is trying to check for the nearest player to it

[brazen merlin]

what i recommended was a bit different, #blueprint message

[winged sentinel]

nvm got it its

[gentle urchin]

Get pawn is accessible from playerstate

[winged sentinel]

thank you, get pawn private is returning the correct value over a string, but now my ai wont move lol

it might have to do withg something on my end tho, as the values are fine

@gentle urchin @hallow harness Thank you both for your help, AI is fully replicated now with all players

[hallow harness]

nice 👍

[bright harbor]

so i'm trying to run a while loop that checks the players location and runs nothing until the player hits a specific goal point, but when i try, it says it's an infinite loop

[umbral ginkgo]

I Integrated your original suggestion into the current one and it sort of works(?) All the triggers except the one that is selected are disabled but when the index changes, all of the triggers get disabled.

I think it could be an issue with updating the actors

[brazen merlin]

well the string after the clear isn't suppose to be there. that's the enable collision logic, i wasn't sure exactly how you were doing it

sorry, that is confusing

[umbral ginkgo]

Where should I put the string then?

[brazen merlin]

nah, just remove it, replace it with enable collision for the Target actor since that is the one chosen out of the array at random

[umbral ginkgo]

I cant do that cause the string is (temporary) player feedback. It tells the player atm which trigger works

[tiny prism]

How do I create a blueprint like this? I am new to blueprints so any help would be appreciated.

[brazen merlin]

that is a set node

[tiny prism]

yeah, but how do I get the bottom Target?

I only can get the first variable tunnelspawner to get set

How do I get it to where the Next Tunnel can be set to "Target" variable?

[brazen merlin]

that string is there because I don't have your DisableTrigger function, but that should be called after the Clear array for the ChosenActor so that it has collision

[tiny prism]

I solved my own question. I had to make it instance editable

[umbral ginkgo]

here is the function

But do you have any idea why after one index, all the triggers disable

[brazen merlin]

i dont need the function, you need to call that function after the Clear

[umbral ginkgo]

Oh i thought you were asking for me to send it

[brazen merlin]

sorry no, trying to explain why i had to put a print string in my example

[umbral ginkgo]

ok, so i took out the string

but it still disables after one index

[brazen merlin]

i honestly dont know how you did it, but you don't want the array plugged into the disable trigger function

use the Array Element output of the for loop

[frank salmon]

hey all, does anybody know how to orbit the camera around an object but without the spring arm?

[icy dragon]

With a hacky vector math.

[brazen merlin]

sounds like some custom camera manager stuff 🤯

[icy dragon]

I think ALS did use custom camera manager stuff (which admittedly is frickin painful to work with, but it's something I had to get used to)

[frank salmon]

indeed, but it seems that ALS uses more anim oriented, rather than vector oriented

[brazen merlin]

so like, why cant a spring arm work though?

[frank salmon]

i need many functionalities on a single camera, and the spring arm is bringing more issues to the table

[umbral ginkgo]

Im going to take that as a compliment lol

Should I put it in after clear?

[icy dragon]

As in what issues?

[frank salmon]

distances, snapping on collisions, interpolations, control, etc

[brazen merlin]

like that (ignore the red scribbled out area)

[frank salmon]

would be nice to have something like cinemachine from unity

[icy dragon]

I don't use ||Unity|| lol

It's been like 5 years since the last time I used that P.O.S.

I won't be able to relate to Unity stuff aside from very basic terminologies

[umbral ginkgo]

All of the triggers still get disabled when an index gets chosen more than once

[brazen merlin]

yes, the loop will turn off all of the colliders in the array. the chosen one will not, and if it accidentally does, when the array loop finishes (completed) it will enable the chosen one's collider

[crimson depot]

How can I get an array of files in the current folder that an editor utility is in? I'm thinking I can use the asset registry and then loop through everything until I find the editor utility and parse the directory but that seems kind of hacky

[zealous fog]

Hey guys Im a beginner in Blueprint and made my first code without any tutorials, and I was wondering, is this a good way to handle taking damage on an overlap

also have on end overlap that it sets the boolean "Is overlapping" to false

[winged sentinel]

Seems good, to me at least

[brazen merlin]

i think the delay will keep firing even after you've left the overlap area

[zealous fog]

Hmmm you are right

But why? hehe

I get why, but how do I stop it lol

Putting the branch before the delay?

[brazen merlin]

that would allow for the case to cease, i think you'll also need to have an end overlap event so you can turn of IsOverlapping

[zealous fog]

Yeah I forgot to screenshot that part

moving the branch worked! Thanks!

Lmao I just found out there exists a "pain-causing volume" 😆

[hybrid ether]

Hello, I have multiplayer where every player have replicated variable "team" red or blue. Players spawn projectiles and my goal is to make same team minions "no collision to that projectile". Example shoot behind your own minion to enemy minion, then projectile would go throught minions but hit enemy minions?

[tiny prism]

What is the "GET" component called?

[spark steppe]

get array element? or something

or just "get copy"/"get reference"

the projectile will probably still be stopped by the collision?!

i've not worked with projectiles yet, but for actors you can set them to ignore the collision of specific other actors

[dusky harbor]

Does anybody know how can i take the coordinates into 3 different Print String.
One Print for each of X, Y, Z

[reef tinsel]

Set Timer by Event (or a function), you can save the timer to a variable and then call Clear and Invalidate Timer to stop it

[umbral ginkgo]

I was trying to get this done earlier but realized I explained what I'm trying to fix poorly. In simple terms, I have a bunch of trigger actors and one is randomly chosen when your player interacts with a separate trigger. The rest of the triggers are supposed to be disabled except for the chosen one. Once your player interacts with the chosen one, the whole process can be done over again. The problem is this can only be done once with my current code before all my triggers are disabled. Anyone know why?

[reef tinsel]

disconnect the vector pin, right click (on the output of the / ) and there's an option to separate the inputs, it will be floats

[reef tinsel]

You need a custom collision channel for objects, go to project settings/collisions (you will then have to set every class manually to this collision type. From pawn to redminion for example, etc)

every other class that react to this collision will also have to be set, the overlaps and stuff

[reef tinsel]

I'm not sure, but I think you're disabling the triggers in the actors ? they'd have to be reenabled to work again

[umbral ginkgo]

I really should have thought of that sooner

thanks

[reef tinsel]

it must be that

if not, it has to be something else, I seen no problem in this function

[heavy lion]

ok. I am going out of my mind trying to rotate a moon based on the time of day

i have an alpha of 0-1 for the length of the day

Im plugging that into a lerp rotator and then set actor rotation

[reef tinsel]

and what happens ?

[heavy lion]

if I set the x Rotation to lerp between 90 to 270, the moon rotates through the sky from east to west correctly

But If I alter the other angles, to apply a tilt. It goes in reverse

I just cant seem to apply a tilt to it

[reef tinsel]

the moon is an actor? I'm thinking the pivot is in the 0,0,0 of the world ?

x rotation is a roll, so if that is going from east to west, the forward vector of this actor must be to the left of the moon ?

a pitch should be the y rotation

[heavy lion]

The moon is a BP actor which just includes a moon mesh which is far away from 0,0,0.
But the actor itself is 0,0,0

[reef tinsel]

yeah, it should work. try to lerp the x and y rotation individually and then make the rotator to feed it to the rotation node

[crimson depot]

How about using a spring arm? Make Rotator > Add Relative Rotation

on spring arm

[reef tinsel]

the last time i messed with rotators, the x and y went from -180 to 180 but the Z went from 0 to 359, I don't know if it's still like that

a spring arm should work, but this should work too

[heavy lion]

I cant get it to work at all

If I enter any other values it gets to a point and then pops to another location

[crimson depot]

The only reason I say that is I was trying to do something similar with a camera and it was giving me weird behavior and I just gave up and used a spring arm

[heavy lion]

I dont get why that would be different. Still setting the rotation in the same way no?

[reef tinsel]

you can also try rotating the actual actor in the level and then do the bp rotation just in X

[eternal gate]

I'm putting together an Animation Blueprint using a state machine. I'd like to provide animation data for the output pose by getting animation data from an actor. Is there a way to do this?

Below is basically what I'd like to do. Is this possible one way or another? The "Fire1Anim" is a UAnimationAsset object

[brazen merlin]

the issue you are dealing with is euler rotation vs quaternion rotation, and they are a pain in the a**

[barren relic]

Im trying to make a checkpoint system and respawning works, but when it tries to spawn at the checkpoint location I get pending kill errors even though the only thing that changed was the spawn transform

[devout latch]

Yes. I have mine set up so when a variable is changed on my actor, the animation changes automatically. I have an enumeration that stores all the animations and I set it - which changes the animation state. Is that something you are looking for?

[trim matrix]

guys what's the difference between subsystem, game instance and game instance subsystems??

[eternal gate]

I don't think that's exactly what I'm looking for. What I want to do is have my state machine play animations based on which weapon I have equipped. Like, each weapon will have an idle, walk, attack, etc. animations, and the state machine will use the animations tied to whichever weapon is equipped

[brazen merlin]

maybe its the delay

[barren relic]

think i should remove it?

[brazen merlin]

fingers crossed

[barren relic]

ill try it

[brazen merlin]

inside your idle, walking, etc are the anims used, you can expose those pins and have a variable plug in instead

[brazen merlin]

subsystem is the platform module, like if its the steam subsystem, that allows the engine and steam to talk network info. Game instance is the active session, it handles session connecting and disconnecting, it maintains the session and data relevant for it. Not sure about GIS, maybe that's a newer thing added when I did mp last year

[eternal gate]

What's a pin and how do I expose them? Still pretty new to UE4

[brazen merlin]

open up your idle

[eternal gate]

yeah

or did you mean the anim asset?

[brazen merlin]

nah thats right

select your animation node

in the details there should be a "make pin" checkbox or something

[eternal gate]

don't see it

unless im blind?

[brazen merlin]

i dont see it either, hang on

ah, thats right, its a bit different now - go to bind, then expose as pin

that will give a pin on the anim node, drag off that and promote to variable, give it a name

[eternal gate]

ah, I think I see now, ty

[brazen merlin]

you can now set that variable to whatever animation you want

[eternal gate]

awesome, tyvm

[brazen merlin]

sure thing

[strange comet]

Can someone help me with this where the prompt doesnt go off screen

[brazen merlin]

you might need to make the widget a variable

[strange comet]

How would i go about doing that (I only got into ue recently)

[brazen merlin]

the return value of the create widget, promote that output to a variable, then reference that

[strange comet]

Like this?

because this didnt work

lmao

[brazen merlin]

yeah, not quite

[strange comet]

Yea im kinda dumb lmao

[brazen merlin]

you need to set the variable after the widget gets created

nah, you're not

[trim matrix]

hello

[thorn trellis]

Hi anyone who is still learning ue4 and is relatively new!
I was once like you
I was only able to use casting and didnt understand interfaces
I just learned how interfaces work
oh my god is it so much better than casting
you should learn interfaces too and save yourself the headache of refactoring that I'm about to deal with to get size maps and references down

Dont be like me

[trim matrix]

I was wondering if someone could help me im trying to make it so that the player cant jump before the landing animation fully plays

[trim matrix]

casting has its use cases...

[thorn trellis]

Definitely. But it's not for literally everything lol

[trim matrix]

👍

[icy dragon]

Hahaha no

[trim matrix]

can somebody help me fix this

[icy dragon]

Just add a delay to control a gate, with the duration being the length of your landing animatiom

[trim matrix]

im trying to make a tribe/group/clan system right now and i got a pretty good idea of what i want and how im going to do it, but how to save infomation of the groups? im going to run server with database in the future so i just need a temporary way to save the info until im ready to implement database.

well I did something here but honestly dont know what im doing lol

@icy dragon

[brazen merlin]

immediately after the OnLanded event, before IsJumping, put a RetriggerableDelay

[trim matrix]

how many seconds @brazen merlin

[brazen merlin]

well, 1 second will mean that when the character lands you cant jump until that elapses

[trim matrix]

how about when im falling

[brazen merlin]

on landed fires when you fall and land

it is not tied to jump

jump is another form of causing falling

thats what i got for my character jump

[trim matrix]

I can still spam jump

right just before the landing

[trim matrix]

@brazen merlin

[brazen merlin]

try a bigger number, like 3

[trim matrix]

it is 3

[brazen merlin]

that is 0.3 sir

[trim matrix]

im stuck in the air

[brazen merlin]

?

[brazen merlin]

😆 ue5 be drunk

[trim matrix]

Do i need to create other variable?

[brazen merlin]

i dont know

you need that delay?

[trim matrix]

my issue is that its possible to jump again as soon as you land, even before the landing animation is played

[brazen merlin]

just a moment ago jumping didnt keep you in the air, now you say it does, the retriggerable delay is onlanded, so jumping shouldnt be possible, i havent a clue dude

you know what it is, you're using delays to re-enable bools, and thats a no no

your bools should enable when the anim or action finishes

thats something to link up with it specifically, using delays wont solve it

not with input events

so for the jump input, lose the delay

all you should need for the on landed is this

[trim matrix]

idk bro it doesnt work

fk it

idk what else to tell you

[brazen merlin]

do this for the jump

one of the branches is missing to check that jumping is already active

[marble violet]

Is there a better way of removing widget from viewport? cause when I remove from parent and then check is in viewport it returns true.

I can add delay, but it doesn't seems efficient

[south notch]

Hi!, im pretty new in unreal and i need help with this, when i convert the float to this ToText Node, i don't know why but, i can't get the float with the dot, i want an 1.000 but always get 1 000, sorry if i can't explain myself, idk how to talk eng
There's a pic of the Healthbar with numbers and the BP

[trim matrix]

why is this false

im so confused

nvm

I get it

you're a legend dude

it works

thanks so much

Big shout out to Conrad

💯

[brazen merlin]

instead of to text use FormatText

[trim matrix]

does anyone know how i could make dedicated server save files?
or can refer me to documentation on it

[chrome fractal]

If I attach two actors with attach actor to actor node and I have parent actor how can I found the other attached actor.

[atomic salmon]

@chrome fractaluse can use Get Owner to get the topmost actor owning a component or actor component

From there you can use Get Children and similar to get the attached actors

[chrome fractal]

I have the parent in hand I want to get the actor which is attached to it via attach actor to actor node

[atomic salmon]

https://docs.unrealengine.com/4.26/en-US/BlueprintAPI/Components/GetChildrenComponents/

If you get into a Child Actor Component you can use this:
https://docs.unrealengine.com/4.27/en-US/BlueprintAPI/Actor/GetAllChildActors/

[chrome fractal]

It isn't work

for me

[atomic salmon]

@chrome fractaldoesn't work is hard to interpret. What happens exactly? Your attached actor is not listed or what? Can you show your code?

[chrome fractal]

Both arrays length are 0.

[languid linden]

guys whats difference between creating a duplicate and a child actor? don't they both work in same ways?

[atomic salmon]

@chrome fractalyou are getting the list of attached actors before the attach to takes place

[timber knoll]

A duplicate is just an exact copy, while a child inherits everything from the parent

Meaning that a child will change when the parent changes

A copy on the other hand, will not

[chrome fractal]

No, in duplicate you just create a copy of that class and you can modify its basic structure but child class can't modify the basic structure like components defined in parent.

[chrome fractal]

getting the same result after 5 sec delay

[timber knoll]

And as an extra on inheritance: you can also extend parent functions or complety change their implementation inside the child actor.

[languid linden]

is instance also a copy?

[timber knoll]

Not quite

An instance is what you have in your scene when you place the blueprint

Every object is an instance of your blueprint class

It’s very similar to copies

Usually you have child actors for things like: weapons, enemies, ...

Where you have a base weapon/enemy and then each specific enemy is a child from that base

[languid linden]

i created a character as AI, it has death function. then i create a duplicate, it posses the function and dies when death function is called. i create a child of original AI, it inherited death function and when i call it, child is not dying.

[timber knoll]

Exactly what I said

You can choose to extend logic, or completly overwrite

[languid linden]

so what should i do to make death function work in child actor?

[timber knoll]

In your case you want to extend, so right click the node in the child

Then you can add a call to the parent node

[languid linden]

where do i extend this? in construct script?

[timber knoll]

Which is basically copying the logic (but if it changes in the parent, it will change in the child)

Where you have the event or function

[languid linden]

can you give me example?

[timber knoll]

How have you set it up? Can you show us parent and child

[languid linden]

because i have that function in child and when i call the that function it not working

wait should i make a vidoe or screenshots?

[timber knoll]

Just screenshots are fine 🙂

[languid linden]

this is in parent

this is parent

my child zombie AI

i created a grenade actor which has collision and on overlap calls death function in zombie child

[timber knoll]

but you are using destroy actor

not death?

[languid linden]

sorry i was checking it let me change it

here

[timber knoll]

you should actually not even cast if it's the same function

just call the function from AI

[sharp rapids]

Can you show the Death function in your child

[timber knoll]

don't think he overrides it

[sharp rapids]

I see death on the left here

[languid linden]

like this? now it not working

[sharp rapids]

don't know if it's overriden or a separate function

[languid linden]

that death function is from parent which is not working in child zombie.