blueprint

[frosty heron]

are they empty?

i mean if there's nothing in it, just delete it

[sand bloom]

oh I guess visualstudio doesn't remove the file itself when you press remove 🤔

so I guess i'll just go into file explorer

let's see if it works now 🤔

ohhh

0 failed this time

[gentle urchin]

Getting closer every time

[sand bloom]

lmao yeah

I think I see it

😩

It actually seems to work now damn

Thank you both for your help, I really appreciate it

I gotta try the other enum now myself and write down notes I can refer to in the future

🫡

[gentle urchin]

best of luck on your c++ journey!

[sand bloom]

thank you! Adding in a new enum worked, I can now use this template for all my future unreal projects for reference

[crisp moon]

is dealing damage like this is ok or u guys suggest better thing

[agile moss]

Is the any way to get "key press" in a widget? press i -> flipflop set visibility widget

[frosty heron]

my suggestion wuld be #gameplay-ability-system

[soft lion]

I just do an input action on tab or whatever and in the player controller or wherever you put the input action binding in that event graph handle the logic for the flip flop

In my player controller is where I keep my inventory so I handle all the inventory widget creation and stuff inside the player controller itself. I have an input action bind on TAB and when I press it it calls this toggle menu function

[agile moss]

I'm just gonna make a bool in the player then set timer by event in the widget

https://tenor.com/view/boom-explosion-gif-21768412

[soft lion]

I don't understand what's the goal then

[agile moss]

Basicaly just show hide inventory items by the i key

[maiden wadi]

Both of you need CommonUI.

[soft lion]

I'm avoiding it

[agile moss]

I'm cooked

[maiden wadi]

My condolences.

[soft lion]

I have only been told 1203958234095 times to do it I know

I've watched tutorials on it and the epic livestream about it

It looks good it looks easy

I did a project where I had everything in rich text blocks and had a setup for that, but the common UI was overall more comprehensive

[soft lion]

What I told you and posted my code does exactly what that statement says. You press a key and it toggles visibility. I don't see why you would want to make the widget grab info off the player when the player can just control the widget

[maiden wadi]

The CommonUI solve for this is simply making a CommonButtonBase child. Adding a Triggering action to it, and putting it in an Activated widget.

[soft lion]

Too simple I need it overcomplicated and inefficient please

[high frost]

i'm trying to migrate some assets (widget blueprints, textures and one blueprint struct asset) from UE 5.4.3 to 5.3.2 project, but for reason only folders are created in my 5.3 project but they're all empty. What could have I done wrong here?

[agile moss]

I only know nodes and short explanations

Sorry

[soft lion]

Oh omg

this is the blueprints channel

[agile moss]

Lol

[soft lion]

I am so sorry I just posted a whole C++ block

[agile moss]

Ur good bro, don't worry 😂

[soft lion]

You can still do it all in blueprints tho all my functions in the C++ code is all in blueprints

You know how to make an input action right

make an input action for IA_Inventory and add it to the mapping context on I key

In the event graph make your flip flop

You create the inventory widget inside the same BP that has the toggle action and keep a variable reference stored to the created widget

From that variable reference you can check visibility and run the flip flop to show and hide

[empty marten]

Hey peeps,
Quick question, say I got 10 arrays stored with directories and I wanted to pick 1 array at random and then get 1 random index from that array, how would I do that? I know I can't store an array of arrays so just wondering if there's another way to do it?

[agile moss]

I think I know how I'm gonna do it
Thanks

[soft lion]

Good luck god speed

[maiden wadi]

Array of Structs, with an Array

[soft lion]

This. Make a struct that has the array you want inside the struct then make an array of those structs

I love maps tho

maps are the best

[maiden wadi]

Alternatively. You could just math it.

Count up all array lengths. Minus 1 for 0 index. Randomize between 0 and this number. Find out which array that was supposed to access by offsetting the value and then just access that index.

Or just dump copies of all arrays into a new array and randomize one.

Ton of ways to do that without any additional constraints.

[soft lion]

I do that with my RNG gacha loot boxes

[empty marten]

Well the plan is that each array contains names of videos from folders and I was gonna pick a random video from a random folder, play it and then remove that from the array but I could possible do a get all videos from each folder and put them all into 1 large array but would that cause issues?

Like is there a cap size for arrays?

[gentle urchin]

Millions

So unless you're putting Youtube in a folder, you'll be fine

[empty marten]

Haha not that extreme XD

[rigid abyss]

does anyone know why my blueprint dosent work im trying to add mid air movemejnt for cars like gta

[frosty heron]

not even plugged

[rigid abyss]

wym

[frosty heron]

you didn't plug the node

it will never be executed

see the white pins?

[rigid abyss]

the branch?

[frosty heron]

sure

[rigid abyss]

like this?

[empty marten]

Yeah. Now you just need to execute that custom event somewhere in the blueprint

Or

better yet, execute the code from the input axis nodes

[frosty heron]

Doesn't make sense

If you want to use the axis value from the input then plug the white pin from it

What ever you doing atm make no complete sense

And for sanity sake, maybe don't try to recreate gta, just saying

I don't get how making rotator out of input values translate to anything.

You seems to do everything way too randomly

First write on paper

Then comes the implementation

[rigid abyss]

big man i started last week

[frosty heron]

I'm no big man and I'm just saying

Write on paper first what you actually want to do

Then implement when you work out the algorithm

It's better than going blindly imo

[iron idol]

Its probably hard to write it out on paper if you are so new that you don't know what to write. A week is quite young in UE hours. Honestly Cold's suggestion of make something more simple is not a bad one. I started following several tutorials to the T before trying to branch out. I'm only like 500 hours into UE and still get stuck all the time.

[copper karma]

I agree

[frosty heron]

If you can't write pseudo code you can write in plain english

If I press this button it will do this action

[copper karma]

I understood everything

[frosty heron]

Then the rest is probably research and problem solving

I struggle with both

[final berry]

Hello! I'm running into the issue that apparently you can't convert a string that says 1,1 to a float? It gives me 1,0. Does anyone know how to work around that?

[frosty heron]

Show code

[rigid abyss]

convert from str to int

[iron idol]

not int

[frosty heron]

Float

[rigid abyss]

float**

[iron idol]

int cannot have decimals

[rigid abyss]

my finger slipped

[frosty heron]

But yes u can convert to str

[gentle urchin]

And to text

If you want easy decimal/integer control

[final berry]

Sorry, I made a mistake 😅 I fixed it. I tried to convert a 1,1 string to float. But it should have been 1.1

[frosty heron]

@rigid abyss tbh I think you can simplify it just by tweeking one of the setting in your character movement component

When in air, change the rotation rate

When landed, switch the rotation rate back to normal

Play around with the setting, maybe use controller rotation yaw. I dunnoe

No pig to ride yet in my game

[copper karma]

Its not a controller game

But hes gonna add controller controls

[rigid abyss]

i changed it up but instead of rotating it according to local coordinates it rotates it globally

how do i change the angular velocity to be local not global

[frosty heron]

Maybe account for the actor rotation

Anyway gonna sleep. Gl

Afaik axis value is -1 to 1

Useful to represent direction

You gotta apply some math to translate that value

[rigid abyss]

i was in a 20v1

we won

[copper karma]

The whole class started calling us the sigma slayers

[rigid abyss]

i was once in a 1v8

they stripped my limbs now they call me log

[copper karma]

I was once in a 1v100 against the whole school

Lets just say

They didnt last long 😈

[rigid abyss]

someone help

[copper karma]

I can help you

So basically

You change the angular velocity to be local not global

[barren kestrel]

Hi guys any one know a way to make a portal excursion like funnel which interacts with all actors

Including ones that don't use physics ie the player character

[wheat citrus]

When using the Box Overlap Actors node I only get an overlap if the box overlaps with the convex hull collision of the mesh. How would I go about getting an overlap if the box is fully inside the convex hull?

in other words how do I make the collision hull into a collision volume

[faint pasture]

rotate / unrotate vector

to translate from local to global and back
Global = Rotate(Local)
Local = UnRotate(Global)

[wild pumice]

Hi all, I'm currently at the point where I have to consider frame independence in my project. After a bit of testing of using thr "Add force" node on an object at different framerates, it seems the node is frame dependent? What is the proper way to add force to objects with frame independence. I tried multiplying by delta time but still got inconsistent results. Strange that I can't find much info on this online.

[gaunt stirrup]

trying to disable widget input after ready has been clicked, but an error shows - any help please?

[narrow sentinel]

Anyone know what I'm meant to do with this, it's after I'm build my level it's gave me this warning

[trim matrix]

Writing BP to take a screenshot with UI for runtime in packaged build. UE has yet to accept any relative filepath to a users (any users) desktop, whats the catch? shot showui + ???

[loud tree]

Don't use enable/disable input

Use the
"Set input to game, ui, or game and ui" nodes as needed to start.

Make sure your input for the ui and the input for the game are in the same class (pawn, controller)

[gaunt stirrup]

its on ui mode atm @loud tree

[loud tree]

By frame rates are you referring to latency by chance? Trying to understand to see if I can help.
To my knowledge frame rate itself should effect nothing as it's just the speed/rate at which images populate your screen.
You will see things move faster in higher fps but it does the same exact movements.

However, latency can sag your fps hard. The latency itself can cause massive programming issues.

Sorry if that was unnecessary to say.

[unique rock]

how does you Keep moving after set input mode game only?

[loud tree]

Okay, this play code in the ui itself, correct?

[gaunt stirrup]

its on the level blueprint

[loud tree]

Oh wait

[gaunt stirrup]

i wanted to turn it off in a widget button

[loud tree]

Use stop movement node

[unique rock]

i what my player to not stop move

moving

[loud tree]

Do it from the widget blueprint.
On button press > get owning player or player controller > set input to game, see If that works

[unique rock]

will try

[loud tree]

Oh sorry. Um let me think for a minute haven't done this myself yet.

[unique rock]

did not work

[wild pumice]

I mean setting the frames per second to be capped at 60 FPS then running the same code capped at 30 and 15 FPS. My object moves at different speeds with this code.

[loud tree]

Setting it in the widget was for chainbody

[unique rock]

lol

[loud tree]

Yes, it will.
Think of frames like this
At 30 fps your computer shows you 30 images per second to show the animation of your screen.

At 60 it is showing you 60 images per second.

Seeing 30 steps of progress is going to feel slower than seeing 60 steps of progress. The progress rate is still the same though unless there is latency causing problems

[loud tree]

For your issue are you trying to make an auto run more or less?
Like disable input, player runs forward.

Or trying to reach a specific point like an ai?

[unique rock]

im opening weapon wheel

and on close it stop my movement

[loud tree]

Ok

[wild pumice]

Yeah, but the object in this case actually moves slower(physics wise) in the level. It takes longer to traverse the same amount of distance separate of frames rendered visually. I'm guessing I have to multiply by Delta time somewhere when using the "Add Force" node, but I'm not sure if thats the proper way.

[gaunt stirrup]

Okay trying this

[gentle urchin]

I believe you should multiply the final force with delta time

So if its higher framrate, the force applied per frame is less than if its low framerate

1 fps = 100% force per frame
10 fps = 10% force per frame
100 fps = 1% force per frame

[gaunt stirrup]

@loud tree is this what u mean

[loud tree]

Try adding a custom event on your character that runs as the ui opens, to disable normal input, set a variable or form of constant input, then add movement input, maybe something like get actor>forward vector (definitely needs more mathing but can't think atm) for the world direction on a loop.

When you close the widget, reset that variable/disable the input.

[hollow yacht]

Vile's noob questions

[loud tree]

Change that to game only.
If that doesn't work I may need a deeper look at your set up with this button.

[wild pumice]

Thanks @loud tree @gentle urchin , I'll take a look at my code and test using delta time.

[barren tundra]

hi, I have a tricki question. Is it possible to create blueprint class that can be select as value in property just like staic mesh?

[loud tree]

How are you measuring this? Is this multiplayer or single player/unreplicated?
You may be right.
Sorry I'm not being much help.

[barren tundra]

so it create copy of that asset

[wild pumice]

Singleplayer, It's a racing vehicle with a timed checkpoint.

[loud tree]

If I'm understanding you right, yes you can.

If you're asking if you can pick a BP as a static mesh then no.

[barren tundra]

i am just show example on meshes.

[wild pumice]

Timer starts, I run in a straight line and timers stops when I pass the checkpoint. I'm only pressing the forward input which triggers my "Add Force" code.

[barren tundra]

all I see is that in property you can use only objects on the level

But i wanna use object that cannot be use as actor on the level.

[unique rock]

BP_Classreference?

[loud tree]

Thinking and researching rq to see if I see anything

[barren tundra]

If i take classRef. I can create the new object of that type but then my question is if new object will have the same values as blueprint ion content browser

[loud tree]

Make a parent class of the actor with shared values.
Make individual actors to customize.
Call the class of those actors.
From that class you can select specific actors that will spawn as you've set them up

[wild pumice]

Thanks, don't worry if it's too much hassle, I might be asking the question wrong also. It could be as simple as adding the multiplication by Delta time when the Add Force code is called. I'll test this later in the day. But I'd appreciate it if you did share any info if you stumble upon it.

[gaunt stirrup]

fuck i dont think that worked

im just trying to Temporarily disable widget buttons before the widget changes to another widget

so people cant spam or change character after theyve pressed ready

[loud tree]

Are other input types other than force viable for you? Haven't been able to read deep yet but what I did see so far shows that force is more adding energy to the object as opposed to a regular input.
That energy has to be mediated as you guessed somehow with the time delta.

[loud tree]

Ohhhh add a do once node

[wild pumice]

yeah at the moment it has to be phyiscs based with Add Force since I have other code for Drifting which calculates movement vectors to prevent sliding with counter forces which also use Add Force.

[gentle urchin]

Waaait, are you running it on a timer !?

If so, That changes everything

[loud tree]

Would it be possible to add force to initiate and control the drift then remove the force at the end? Sorry just spit balling.

[loud tree]

The code itself isn't I don't believe.
But he measures the time it takes with one I believe

[loud tree]

Here's their code

[wild pumice]

Correct. The timer is separate code for the checkpoint. Unrelated to the vehicle.

[wild pumice]

Since it's acceleration, it would have to be constant force when the acceleration key is pressed.

I think multiplying by delta time will be a possible solution.

[hollow yacht]

How do I set it so that it recognizes which selected option I have? I'm obviously missing something between Set Selected Option and the Branch (because it has no idea "what" I selected just that I did)

[wild pumice]

so that that overall force is the same as time passes like @gentle urchin said.

[loud tree]

That's the goal I've read on the few posts I've been able to.
I'd say give it a go
Test with * and / see what works.
Sorry I wasn't much help

[wild pumice]

I'll test it once I'm able later today. I appreciate the help and looking into it.🙌

[gaunt stirrup]

you're still able to click other buttons in the widget after pressing ready because theres a 3.0 second buffer before changing widgets 😦

[barren tundra]

hmmm I think that I try this. Create testclass inher. from object (this is my base class) then create couple children. but when i make property of the base class in some actor on the level still cannot see any children to select

[loud tree]

You could set the buttons or widget to collapsed after pressing

[loud tree]

Best of luck! I believe you will get it running as you want it

[gaunt stirrup]

never heard of that 1 ill try

[loud tree]

Make sure you're selecting the parent actor then changing that one to class

All children should populate when using it if you use "get actor of class"

[hollow yacht]

I'm apparently really bad at this all I needed was to ... make it a lot more simple

[normal viper]

hey folks
can any one tell me how can i make a setting to switch between anti aliasing modes insinde my setting menu

[gaunt stirrup]

how do i do this?

[faint pasture]

If you're after the blocky effect I'd probably blend render with render sampled at some low resolution

Pixel = Blend(Pixel, Pixel at UV rounded to some grid)

[loud tree]

Make sure "is variable" is selected for whatever you want to do this for. (Top right in the widget viewer when it is highlighted)
On the event graph drag what you want hidden in as a "get" node. Drag from that and set visibility

[faint pasture]

Should get you close to this

[jolly oracle]

Hey...I've done some digging around and I think I've found some sort of solution for my issue.
[wanting to set assets to be packaged with certain build targets]
but this seems reeeally involved changing my build config...just to include BP_function_libraries. With my server target.
Is it possible for a multiplayer game using only blueprints: To achieve this functionality with using Blueprint editor utilities?
I don't know if I want to switch up to a unique build config because this would only be for prototyping and when I expand these to more
c++ oriented solutions...with more normal build configurations.
Any Ideas? Help? Personal methods?

[gentle urchin]

Isnt there some build lists you can alter in project settings? Also #packaging , I believe

[empty marten]

Hey peeps,
I got a bunch of Stream Media Source assets in my content browser. I want to get all of those in a BP and then randomly pick one to then play on my media source. What is the best way to get those Stream Media Sources? I know I could use asset registry but feel like that might be a bit much just to get a reference to them. Any advice?

[warped juniper]

Hey, I'm trying to figure out some way to do a basic dash ability (move in X direction over Y seconds for Z distance) but I cannot figure out the right approach to do it

I tried launch, movement modes, adding location manually via timelines, nothing makes me feel satisfied with the result

[tawdry walrus]

you can use the "Execute Console Command" node and in the command use "r.AntiAliasingMethod [Number of anti-Aliasing Method]" to get the value from 0 to 4 you can use "Get Console Variable Int Value" and if want to make like an option or drop-down menu you can use Combo Box (string) and add On selection changed from the combo box string and you add and drag and drop from the selected item and make a variable name it like "Current Anti-Aliasing Method" or whatever you want and drag and drop from selected Item and make a switch and add the anti-aliasing and name it like the options in the combo string and use "Execute Console Command" node and use the command "r.AntiAliasingMethod [Number of anti-Aliasing Method]" and It will work

sorry if my English is not great, it's not my first language. Also, sorry for the long message.

[normal viper]

thnax a lot man
i did it with buttons and when the button is pressed then i execute console commands
it works fine

but do u know any way of saving these settings as i cant save them like i did with other settings with the get game user settings and then save setting

[tawdry walrus]

Did you create any kind of save system? If not, this video would be very helpful.
https://www.youtube.com/watch?v=H6rqJbwjRIk

[copper chasm]

I have a "gameplay mode" manager set up as an enumerator - when combat starts I want to shift from real time control to turn based - can I run the check on tick without too many problems if I preface the switch with a boolean? something like this

[jolly oracle]

Yes there is but in my case I need to for instance:
(Windows64)(Development)(Server) Contains Function Library
(Windows64)(Development)(Client) Does not contain Function Library

And with exclusion directories it is across both build targets.
Also I've only found solutions that are platform Specific.
But not target specific.

[crude dew]

Ok, I cant see what im doing wrong here, I have 2 paddles with custom object of type Paddle, and Sidewalls with Custom Object of Walls, Walls have collision profile to "Block" paddles and paddles have collision to block walls but the paddle just moves through the wall as if theres no collision at all, The wall have a Collision setup on the Mesh and Paddle has collision generated on the mesh , Anyone got ideas please?

If i get the paddle to simulate physics and try to drop it on the wall using gravity it works as intended.

[jolly oracle]

Also I don't know how I don't be seeing these channels. 🤦‍♂️ Thanks.

[crude dew]

The ball acts as expected and is set to "block" paddles and bounces off of it as expected.

[normal viper]

thanx again ill give it a look

[crude dew]

I am moving the paddle with a simple when key pressed move up or down in the Y axis if thats relevant.

[dawn gazelle]

You shouldn't run it on tick. If you're using an event to set that "Mode Changed" variable, that same chain of logic could be used to make any required changes of the mode being changed rather than constantly checking if "Mode Changed" is true.

[copper chasm]

You know what, that makes sense

[gentle urchin]

Datura, the sense maker

Maker of Senses

[hoary summit]

How can I get this Event Init?

am i being dumb? I don't see it as an option....

This is what I have

[cyan spire]

The init is not a variable that you can get. Its a "Begin to run this code" function and stores nothing, so you cant get it

As soon as you run your game this is what starts whatever comes after the pin, imagine it like a power socket on button, if you press it, it can turn on whatever comes after that, it has no on/off state. It can only be pressed once

If you want to know if this fired, you would use a "set bool" event initiialized node and set it to true, and then get that one

[silver garden]

I have set the cursor widgets on Project Settings->Engine->User Interface->Software Cursors, to get a custom cursor image.
One of these Widgets has an animation. Is there a way I can get a reference to that cursor widget so I can play the animation it has?
The animation should be played when I register a hit on an enemy.

[cyan spire]

Theres sadly no easy way to do it, unreal does allow you to change the cursor, but if you want to play a anim you need to draw your anim OVER the existing old cursor. So you use a widget that you overlay on the cursor existing cursor, you do this by

The "cursor" state is just the mouse location in XY on your screen

You can do it, but dont look for in built solutions because there are none, you need to make it from scratch

Its confusing because theres seemingly a way to change the texture integrated in unreal but nothing for a animation or to do it in runtime

so the only solution is to do it by hand

[silver garden]

Ah, that is interesting, thank you for the info!
So, what I'm thinking is: take the Game Instance, create the Cursor Widget there, store it and hide it.
Then, when a Game Mode is initialized, take said cursor as a reference and handle it in the game mode itself.

[hoary summit]

Sorry, to be clear, the top screenshot is from a plugin installation tutorial

I have created a blank game mode, but dont have an init event

[cyan spire]

Its the same logic, the event init is a unreal function, they just used the same

[hoary summit]

i dont have it

[cyan spire]

Use event begin play instead of init

[hoary summit]

ahh right

yeah same thing

[cyan spire]

The init means basically theres something is linked to it, event begin play means its blank and you can run whatever you want

[hoary summit]

what about event shutdown?

[cyan spire]

The vent shutdown is ONLY available in the game instance class (the game instance class is a blueprint class that is built in into unreal engine and has own nodes such as event init and event shutdown which are not built into the character or other classes)

[hoary summit]

right, so ...

did I choose the wrong blueprint class?

[cyan spire]

You need to know that certain events, nodes are only available in some of the classes, not in EVERY blueprint, reason is this is built in into the blueprint, if you make a blank blueprint its not there. Unreal Engine has like i said this stuf built into that EXACT class. So imagine it hte event shutdown is ONLY AVAILABLE for you in the gamemode class

Thats the gamemodebase, you need the game instance

[hoary summit]

right

okay that's where i messed up

[cyan spire]

Playerstate =/= playercontroller or playercharacter, gamemode base =/= game instance

Theres many similar named blueprints but you need to do it in the EXACT named blueprint, i know its confusing at first

[hoary summit]

awesome

tyvm, really appreciate it.

[marsh pilot]

Hey does the ConstructionScript event also update during runtime or only in the editor?

[cyan spire]

No problem, you need to read this, you can see what the difference between both is, the game instance for example can store data even if you shutdown the server, the rest blueprint classes cant.

https://andrea-alicino.medium.com/game-mode-game-instance-33aa955dcaae

This is the important part : 4. Initialization: Performs initialization operations that must occur only once at game startup.

[hoary summit]

thanks, will give it a read

[cyan spire]

Thats the init node you were looking for which did not exist in other blueprints ONLY in the game instance

[cyan spire]

It does ONLY run once as soon as you start your game and before the actor is spawned in the world, it does NEVER update. It runs the code once at start and thats everything. Theres also Event pre-construct, which runs in the editor (but also only once)

[marsh pilot]

Ah damn, alright thank you. I'll have to use tick then. Luckily it's only for a placer to tick isn't that big of a deal in terms of resources

[hoary summit]

it will fire every tick, and probably wreck your FPS

[cyan spire]

The problem is not with getting or storing the variable, i also highly suggest to store it inside the player controller class, since if you create the widget there, you have a DIRECT reference to it and can modify as you like. Thee HUGE problem you probably did not think about is how to play a animation. The word animation can mean anything, so if its a simple animation you can use a lerp to animate between picture A and picture B, if you want a complex animation, so for example where something completely differnet happens over the time frame of .3 secs, thats hell to do and needs a insane amount of research, its doable but figuring out how the ANIMATION can be done is your main goal, the other stuff is easy

[hoary summit]

like it will fire thousands of the same command instead of one command continuously

[cyan spire]

In short what do you want to do?

Or what do you want to be constantly updated?

[marsh pilot]

Essentially I'm working on a railroad tycoon game. I have the actual built tracks that work fine with the PCG, but I'm working on the track placer which is essentially a drag system. Here the background is the actual built track, and in the foreground is the placer. Not sure why the ties aren't being generated since they're also part of the PCG graph, but I'm looking into that. The two spheres are the start and end points

[hoary summit]

okay so what are you checking for?

alignment and position of the last placed piece?

[maiden wadi]

What does this have to do with the construction script?

[marsh pilot]

It's for placement of the ties and rails. I'm not too concerned about the rails since I'll be reworking them when 5.5 comes out

[queen sphinx]

Would anyone know how to pass a flow rate from blueprint1 through onto the next blueprint1?

[hoary summit]

yeah nah you need to make like an item spawner blueprint that handles all that

[marsh pilot]

Hm interesting, what do you mean by that?

[hoary summit]

you would create a blueprint, that your player can control, move about, and press a button to spawn an item.

[marsh pilot]

Yes that's what the placer is

[hoary summit]

then you can make some functions to check the last placed item location, and spawn the next item next to it.

[cyan spire]

Pcg sucks, period. I used it in my small project as soon as introduced multiplayer it all broke because there was no way to keep a reference, a better way is to make a seperate blueprint, spawn the item from that blueprint and make a reference to that blueprint so you can destroy the actor if needed any time, pcg is just fire and forget

[hoary summit]

save the location of your last placed piece, calculate the distance needed to spawn the next item directly after it.

[cyan spire]

Its just too complex to describe, you need to find out yourself what i mean lol

[marsh pilot]

Yes I already have a function for that. It was just off the construction event but I needed to put it on the event tick

[hoary summit]

seems like you only need to check it after you place an item to me though

[silver garden]

The widget has an animation, I will just create a public function in it to play the animation and call it from outside

[maiden wadi]

Curious why the period part? PCG is quite useful. I mean like any visual helper you don't use it for gameplay critical classes and such.

[maiden wadi]

They need it to visually update as the player is doing things.

[marsh pilot]

I mean it wouldn't be in the game all the time, plus it's always only one at a time by it's nature of being a placer. But I suppose I could add it for whenever when the spline is changed

[hoary summit]

by nature of the player doing something -means there is input to write code off of, the event tick is not needed.

[maiden wadi]

Lol

So.. Run it on tick when the player's input ticks instead of when the actor ticks.

The whole engine runs on tick.

Your viewport ticks every single frame to see if it splitscreens.

One actor ticking for a player is a bit silly to avoid.

[hoary summit]

fair enough, I've had so many issues with doing checks off event ticks, then random FPS crashes, hours of profiling and troubleshooting have taught me to avoid.

[marsh pilot]

Yeah I usually avoid for most things but of course for small things like a single placer that at most there's only one at a time, I consider that small enough to accept

[maiden wadi]

Tick isn't a bad thing. Just the stuff you do on it needs to be for it. And avoiding it for the sake of avoiding it tends to lead newer users down a bad path. Like people who use timelines on repeating loops, or 0,001 timers. Both of which are slower than tick. Timeline not so much, but still a bit.

[gentle urchin]

I love my 0.001 timers

Unreliable loop each frame is king

[frosty heron]

Someone gave advice to make line trace for interaction with timer every 0.5 second..... instead using tick....

I told him he gave peak bad advice and he started calling me noob and blow off.

But muh FPS

Like if the game run slow, look for other things to optimise instead ruining player experience.

[maiden wadi]

I've seen bad ticks. We have a few. PlayerController's Input in 4.27 is pretty shitty too. They're hard to clean up though because they do kind of need to exist. PlayerController input on 4.27 starts at like 0.4ms doing nothing on PS4 and XB1 and similar spec PCs.

Some of the best optimizations I've ever seen were things I never expected. The two that always jump to mind is disabling collisions on CableComponents, and using TileView/Listviews/InvalidationBoxes.

Cable Components are wiiiiiildly expensive with collisions. Specially on older slower consoles. I think about 11 or so of them was causing a constant >1ms frametime.

And keeping widgets from doing prepass is always good. Less Tick and Draw time when they don't need it. UI costs a ton even when it seems like it's doing nothing. It's not uncommon for a game to break 3-5ms even on a decent PC without some foresight and planning.

[loud tree]

I'll never understand this, especially if it's the only thing they would be running on tick.

1. It makes a rather negligible difference.
2. You can alter the tick rate as to not run every frame if I'm not mistaken.

[queen sphinx]

Ok so what am I missing here?

If I call the class out as conveyor, it allows me to pull the function “intake” and use it.

If I right click the actor class in “get all actors…” and promote it to variable. It breaks the link for me “intake”

[frosty heron]

Print screen instead

[queen sphinx]

Yeah work pc, can’t throw discord on there. Give me a minute

[loud tree]

Are you trying to make them all do this?

[queen sphinx]

Just the one with a tag, “cv1”

[frosty heron]

Loop thru the actor, find the one with cv1 tag then do something

For each loop with break

[dawn gazelle]

Because your "Actor Class" variable is of type "Actor" and so, the output from "Out Actors" is of type "Actor". In the bottom example where you are selecting the "Conveyor" as the class, the "Out Actor" will be of type "Conveyor" allowing you to call your function.

[frosty heron]

Oops I see the question now

[trim matrix]

My Screenshot with UI and save dialog BP so far... how to tell it to be 1920x1080 always? It currently will only take whatever size the game window size is, thanks!

[queen sphinx]

What is the way to fix the top code so I can get it to call my “intake”

[frosty heron]

You have to cast

[dawn gazelle]

You either have to change the "Actor Class" variable type to be of a "Conveyor" class and make sure to disconnect everything from the Get Actors of Class node connecting that "Actor Class" variable first, or cast from your GET.

[queen sphinx]

Let me try

The “intake” is inside this blueprint. So casting is not needed.

[dawn gazelle]

That's not what casting does. Casting takes a reference and checks if it is the type that you're casting to and then returns a reference as that type which then allows you to access the variables and functions.

If you have an "Actor" reference, it can contain a "Conveyor" object, but because it's stored as an "Actor" you cannot call the "Intake" function on that reference.

[queen sphinx]

Let me send a very dumb down version of what I am trying to make.

[dawn gazelle]

When you're doing the Get All Actors of Class with an "Actor" class reference, it gives you an Array of "Actor", so while the elements of the array could contain a "Conveyor" it doesn't know that, and thus doesn't allow you to call the "Intake" function on the elements of the array.

[queen sphinx]

You might be able to point me in a better direction.

I will have a few different blueprints, “conveyor, silo, ship…”

And I have multiple of each of these. But I want it set up where I can assign what “blueprint” it feeds into next and which one based on its “tag”

[dawn gazelle]

You can either:

1. Have a common base class that all these things inherit from that contains the "Intake" function. In this case, you just need to change your "Actor Class" variable type to that base class and call the base class "Intake" function. Child classes can override what the "Intake" function does.
2. Use the "Actor Class" as-is containing an "Actor" class reference, but then you need to cast for each specific type after the "GET" and call the appropriate "Intake" function for the casted-to class. (I don't recommend this)
3. Use the "Actor Class" as-is containing an "Actor" class reference, but use an interface that you would need to implement in each of the actor classes to then perform whatever you want "Intake" to do in each of them (again, not necessarily recommended if these different actor classes could share a common base class)

[queen sphinx]

Thinking 1) will be the way.

Thank you for the amazing explanation.

[ionic quiver]

I'm using a spline mesh setup to place and bend a mesh around. I'm also doing GPU light baking, but it seems instead of each copy getting a new lightmap, they all get the same one applied (from the first copy I believe). Is there a way to bake something like this with separate lightmaps by any chance?

[rare pasture]

Hi, I'm new to promotion and Unreal Engine!
I want to create blueprints for fun and to practice understanding how everything works.

I made this blueprint, and I wanted to know if there's a way to make it simpler.

[ionic quiver]

One thing that jumps out at me is you don't need to create a new dynamic material instance each time. Make / assign it once on begin play for example and save it as a variable. Then you can set the parameters after.

Another is the delay. It'll trigger after your delay no matter what, even if you're spamming space. Something to keep in mind.

[rare pasture]

Ah, okay, perfect! I'll test that out, thanks!

[hollow karma]

Is there any way to get an actor by it's name ?

[visual ember]

yes, but no. why do you need that? names at runtime are "random"

[agile hound]

I have a question…

Let’s say I have 15 points to be distributed to 8 different attributes.

I was thinking having a 15 intergers starting point and distribute it randomly to all 8 attributes that are also intergers.

To further explain my goal. I want to create multiple characters (no problem there) but I want every characters to have random attributes with a base amount of points to be thrown at their attributes. It’s a recruit your team type of game. Randomness is huge but I do want the randomness to be semi controlled.

Any Ideas?

[frosty heron]

Random with weight?

[hollow karma]

I need to be able to remove actors from a level when loading a saved game if the actor was previously removed in game

[frosty heron]

How about using guid?

#blueprint message

[hollow karma]

I was told that it only has a value in the editor

[visual ember]

solution 1: instead of having to remove, never have it exist in the first place
solution 2: unique id string or gameplay tag on actor, query by "get all actors" and remove no longer living ones

[frosty heron]

Nah that's for actor guid

You can just create a guid variable for your actors

Look how datura do it.

[hollow karma]

This isn't for production code. It's just a a demo of a plugin I've been working on

I want something simple

[frosty heron]

I think using guid as identifier is simpler than using name but I dunnoe

[hollow karma]

Using the name works

Well, one more test

Ah, no it doesn't work across different runs. Well, it may be good enough for my demo at least.

[frosty heron]

Yeah I guess name should work, there shouldn't be name collision anyway

[hollow karma]

I swear I'm spending more time on the demo code than I did on the plugin. 😄

In a real game I probably would go with a guid, though

I wish Epic had thought maybe, you know, a unique ID would be useful in a game. But much like UObject replication, they didn't need it for their games so they figured no one else would ever need it either.

[visual ember]

"semi controlled" means nothing. you need to define "business" requirements of how you want to have those points distributed and then either implement it or ask for help how to do the specific thing

[agile hound]

I want it to be random but the semi controlled part is I decide the amount of points distributed.

[frosty heron]

Not to disagree with anything but I think guid is that unique ID you are looking for

[visual ember]

distributed overall (15) or how many can go into specific attribute?

[frosty heron]

Just pick a random attribute to allocate?

You gotta set the rules and be descriptive about it

[hollow karma]

I would like to have that, but like I said, it's not strictly necessary for my current use case, and honestly I'm not sure how I could generate a GUID that is assigned automatically when you drop an item into the level editor, but then saved as part of the level so you get the same guid the next time you start the editor. I'm thinking I'd need an editor plugin for that.

[agile hound]

I have 8 attributes (Strength, Defense etc…) they all start at -5.

From the 15, I want to do +1 to a random attribute (and -1 to my 15 starting int) until I’ve used up all my 15 points.

[frosty heron]

#blueprint message

As simple as this

[past compass]

if i have an item class like a sword but i'd like that sword class to have tiers, would i need to make seperate blueprints for each weapon? like children of the main and just adjust the variables for that tier ? not sure if there is a better way to do this

[frosty heron]

You will end up with the same guid since it will not generate new one if there is an existing valid guid

[visual ember]

do you know about for loops?

[hollow karma]

I saw that. I would need it in C++, though. And attached to a UObject, not an Actor.

[agile hound]

With arrays yes, for each loop I use often

And I was suspecting a Loop of some kind

[hollow karma]

I'll be thinking about it over the next few days while I work on my save game code, but really, the actual project is a C++ inventory plugin

[frosty heron]

For each loop 0 to number of attributes to allocate -1

[visual ember]

just for loop. from 0 to 14. on each iteration pick up random attribute and +1 it

[frosty heron]

Use the select node and random int to pick random attribute and just add to the picked attrjbute

[agile hound]

Yeah that should work! 🙂 thanks everyone 🙂

[old cypress]

Am I going insane or does blueprint not have an equivalent of bit push operator (<<) for integer or byte?

it seems I'll have to just use "2 ^ my_valiable"?

[hollow karma]

I would be very surprised if blueprints has bitwise operators but I don't know for sure

[opal snow]

Sorry if this isn't the place to ask this but why doesn't the nav agent radius stay updated to the value you put it at? It always seems to reset itself everytime I open my project

[old cypress]

I ended up creating a simple function

    UFUNCTION(BlueprintPure)
    static int ToFlag(uint8 Value)
    {
        return 1 << Value;
    }

but it is baffling to me there is no such function built-in

I mean how else am I suppsoed to convert my enums to flags?

[mild ibex]

am I doing something wrong? I'm just trying to add basic input to a pawn to act as a floating camera. I'm using action mappings with WASD and seemingly nothing is coming through

[hollow karma]

You're not supposed to do that. Even in C that's an archaic technique unless you are doing embedded programming or otherwise working with tight memory constraints

[old cypress]

how would you suggest cnverting enum (uint8) into a flag?

[hollow karma]

I would not do so at all. I would just use the enum values directly. Or if your enum is defined in C++ you could always specify the values explicitly as powers of two instead of the default sequential ints

[old cypress]

are you saying there is no use for enum masks? 🙂

[hollow karma]

No. I'm just saying that bit fields are a solution to a problem that really doesnt exist on modern systems

[surreal peak]

Multiplayer Bandwidth usage wants to have a word with you.

[gentle urchin]

Doesnt cmc use flags for a ton of stuff

[surreal peak]

Na only for the input states

[gentle urchin]

Oh dang

[surreal peak]

But we make heavy use of it for Mover to keep the bandwidth of tons of players low

Also useful for Delta Serialization in NPP.

[spark steppe]

create make bitmask node

https://d1iv7db44yhgxn.cloudfront.net/documentation/images/ee3af14c-a995-4691-b94c-e6dc92abbe8b/image_8.png

[spark steppe]

of course they exist

bitmasks are still very common, especially in render pipelines

[heady scroll]

I'm coding an ability that's a blink in the direction your holding and I need it to go up slopes which has complicated it a lot and I have ended up doing it by breaking it of steps and calling capsule trace multiple times but i'm slightly woried that I am calling that function possibly like 20 times at once. Is that crazy for performance or is it probably fine?

[spark steppe]

that depends on the complexity of your scene

there's no universal answer to that

[maiden wadi]

Cold mentioned Guids, which work but I'm not personally a fan of. And there are also the object's pathname, which is an appended path from the object's outermost object to itself which is used a lot in most of Epic's serialization. So yes they did think it would be useful and they did make it. In fact pathnames are used in pretty much all of Epic's object saving for the engine and it can easily be used in a game as well if you take a couple steps to save and load things in a specific way.

[heady scroll]

wdym by this

in terms of the collision they're interacting with?

[spark steppe]

yea, the complexity of the data that has to be querried

e.g. amount and complexity of colliders

[heady scroll]

my map is made up of a few large meshes

[spark steppe]

the size doen't really matter

it's the complexity of the collision shapes which mostly drive up the cost

spheres, capsules, boxes are cheap

complex collision is more expensive

[heady scroll]

the prototype map im using right now has 2624 tris but that number is likely to go up later

[spark steppe]

it's not about the mesh geometry (unless they have complex collision enabled)

collision geometry is separate (and usually simplified)

[heady scroll]

I think i'm using complex collision at the moment

because the simlified was not helpful for me

because the map wasn't convex

[spark steppe]

well, you have to profile if it's a concern

most likely it wont be an issue for one thing

but don't assume that you can just hit trace as much as you like without having an noticable impact at some point

[graceful gorge]

Guys, can you direct me to a course or tutorial (paid or free), whose owner focuses on understanding rather than focusing on how to create a certain game mechanic? (Or in other words "why?", rather than "how to").

For example, many of those people that others call them teachers, do not explain why they put these nodes in this order. or these variables in that position, etc. I have difficulty applying and performing what they do, because I do not understand why they put them in the first place. This means that I got almost nothing out of it. and even the blueprints that I applied will not benefit me either.

Another question, do I have to memorize every node I come across?
Sorry for the long post

[maiden wadi]

The "why" usually comes with experience and personal preference. It's basic organization and logic flow. People are similar but rarely identical in their thought patterns. And learning from most teaching sources on that is not a great idea 90% of the time because they are doing it to teach. Which means they need to simplify something down into a digestible concept that probably won't apply in the normal world.

For a basic example of this, take something as basic as sprinting. Most tutorials are going to make a basic input, which changes the movement speed. In the real world, sprinting is much more complex and your key input might trigger something like an ability, which houses many other things related to your sprinting and the code rarely gets put in the character itself. But now we have to teach people an entirely separate system on top of the basic sprinting stuff. Thus you get a simplified version to be able to understand how to make the character sprint.

How you take that knowledge and apply it for your game is very much up to you. There is no correct way to program something, because there are always upsides and downsides to designs. Most things are "good enough", until they're not. And you can't always just use the "perfect" way because it doesn't scale either on development iteration time or on hardware performance.

And as for memorizing every single node you come across, not really. You'll remember a decent amount and most systems become easy to follow with time. It's rarely hard to look at a system and determine it's intended methods. So in that regard I would advise trying to learn systems more than their individual functions.

[fiery swallow]

why aren't you a fan of GUID's? I know they aren't perfect, and depending on the type they definitely have issues, but what do you specifically not like about them?

[maiden wadi]

That they're just a replacement for what the engine already has as far as object identification.

Nothing specifically against them. If I needed to identify something that was not a UObject, they might be fine. But we don't really do anything like that. So there's been absolutely no need for them.

[spark steppe]

you also need them kind of for dynamic generated actors

since they will never exist on any valid path (at least not predictable)

[graceful gorge]

Thank you for the thoughtful response.

Yes, I agree with you in every aspect. Yes, many teachers try to simplify something into an easy-to-digest concept. But they don't stick to it for long, and they deviate from their approach. In other words, they explain "why" instead of "how to", and then completely reverse it after some time. I've had this problem a lot. To the point where I thought it was better not to follow tutorials.

For example: The guy from this YouTube video: https://youtu.be/Xw9QEMFInYU?si=aeqgRs5oH76kU1n_ His explanation was really great in the first hour. He was really diligent in explaining instead of "how to". However, he didn't continue after an hour of the same video. This has happened to me in almost every tutorial I come across.

And about the second answer: Do you mean that I should memorize the blueprint itself, instead of memorizing the nodes separately? That seems impossible to me. It seems that I should write down the blueprints instead of the nodes in a giant notebook.

[spark steppe]

watch the videos from Mathew Wadstein

he explains nodes and why he uses them

the "systems" in his video are very small, but they give you a basic idea of what specific nodes do

[maiden wadi]

Even for dynamic stuff. If you're using Objects. You can never have the same named object in the same outer. Which means never the same named Actors in the same World. Or same named Components in an Actor, or the same UObject in any other outer. So there is never a conflict, and even the dynamically created stuff has it's own unique identifier. The only cases you cannot use this is if you're making data that needs to be uniquely identified that is not a UObject.

[graceful gorge]

This channel is such a valuable resource, thanks.

[spark steppe]

if you want to recognize them along systems you will need an unique id anyways

[maiden wadi]

How do you mean?

[spark steppe]

lets say you have an dynamic spawned device in your inventory, which is linked to a actor which is in the world (the actor in the world may need some reference to that thing, which will most likely be an FGuid)

for the save game

which you resolve to an object reference on save load

[maiden wadi]

Just save the pointers.

[spark steppe]

which pointers? the inventory item wont exist on world spawn

[maiden wadi]

Of course not. But you're going to recreate it from the loaded save anyhow.

[spark steppe]

it get's spawned when you load the inventory data

and you get the exact same pointer...?

[maiden wadi]

You do if you load correctly. Pointers serialize as a pathname.

[spark steppe]

yea no way

this sounds wonky af

for that you have to know the order of spawns

[maiden wadi]

Which is easy to manage.

[gentle urchin]

Sounds prone to errors

[spark steppe]

and ensure that no item gets destroyed in between

you spawn item 1, 2, 3, you destroy 2, you save the game

now 3 is 2

what now?

[maiden wadi]

Recreate 1 and 3.

Don't recreate 2

[spark steppe]

and guess what pathname 3 will have

the pathname of 2

[gentle urchin]

Some systems even recreate 2, only to destroy it after

[maiden wadi]

Incorrect. You can specify an object's name at creation.

[spark steppe]

yea whatever, i'll use FGuids 😄

[maiden wadi]

It's a very simple concept. You literally iterate over all of the save objects and recreate them if they were not loaded with the world. Then you iterate over everything again to serialize the data back into it all.

You get a perfectly reloaded system regardless of game type, with a save system that doesn't have a bunch of fixups.

[spark steppe]

now let's say 2 was deleted, you recreated 3 with it's old name

and something still has a stall reference to 2

now you create a new item

will this get the path of the old 2 (and therefor create a valid reference on something which had one on another 2 before) or new 4?

[maiden wadi]

You don't create a new 2 until long after the loading process is done. Thus anything that pointed to 2 will be a null pointer, and a newly created 2 will not be pointed to.

[spark steppe]

ok, true

[maiden wadi]

You're basically doing the identical thing that loading a UMap does.

[gentle urchin]

Sounds pretty practical tbh, if it simply works

My structs still need FGuids tho 😄

[maiden wadi]

It turns gameplay loading and saving code into a few hundred lines of code. It's miraculous, honestly.

The literal only caveat is that you need C++ to access the FArchives and UObject::Serialize, and also to be able to recreate an object with the name it was saved as.

Which, at the savegame scale, you're iterating hundreds to hundreds of thousands of objects. So I'd go C++ anyhow. 😄

[spark steppe]

ok, my gut still tells me to rather go with FGuids 😄

[fiery swallow]

Don't let this distract you from the fact that there's about a 1 in sextillion chance that a duplicate will occur, the odds are low- but never zero.

kinda spooky

[gentle urchin]

there's no interenal check for uniqueness ?

[spark steppe]

no

[gentle urchin]

so we're just rolling the dice

[spark steppe]

unless you keep a registry of all Guids

[gentle urchin]

a big dice, but a dice all the same

[fiery swallow]

everyone underestimates the 1 in sextillion chance :(

[gentle urchin]

its only 1 in sextillion on the second item

third item has 2 in sextillion 😛

[fiery swallow]

ikr that's the funny part

[spark steppe]

the chance, that it will cause a conflict, is most likely lower

[gentle urchin]

that is a lot of zeroes tho

even for a million items

[spark steppe]

340282366920938463463374607431768211455

[fiery swallow]

that's best case scenario too I think. More simple GUID methods are worse

[fiery swallow]

you rolling on your keyboard? lol

[spark steppe]

340 undecillion ... is the name

[gentle urchin]

"Statistically speaking, you would be more likely to win the lottery 30,382 times, consecutively, than to run into a single pair of GUIDs within a sample of 1,000,000,000,000 GUIDs. "

[spark steppe]

no that the max value for uint128

since fguid is made of 4x 32bit

[fiery swallow]

and with all this information, will you still risk using GUIDS?

[gentle urchin]

ill roll that dice

[fiery swallow]

you play a dangerous game

[gentle urchin]

https://tenor.com/view/max-meladze-the-recruit-i-like-to-live-dangerously-im-reckless-living-life-on-the-edge-gif-10747252466035659914

[spark steppe]

https://tenor.com/view/austin-powers-stare-go-on-intrigued-kinky-gif-25583378

[maiden wadi]

I'll stay with my UObject Inventory and Pathnames. 😄

[fiery swallow]

Where everyone elses GUID would fail them with a duplicate, yours will remain

[gentle urchin]

Or track all GUIDS , and ensure uniqueness

[spark steppe]

it's just too good to be true 😄

[fiery swallow]

you have to play by the rules

role the die

[spark steppe]

stuff like savior uses guids, so idk if authaer is just brilliant smart, or if he didn't hit the edge case yet 😛

tho, i would rather trust Authaer at this point...

[gentle urchin]

If it ever fails tho....

https://tenor.com/view/pirates-hang-johnny-depp-gif-5602160

[spark steppe]

i know of one edge case

[fiery swallow]

IIRC Authaer deals with UI stuff, so I can not legally accept that he is smarter then me (even though he has proven to be numerous times)

[spark steppe]

remember the 1,2,3 example before? :>

if the savegame is a state which remains, and an object is in another world, and not loaded. then my example will be a case where it fails

[maiden wadi]

My main issue with Guids is that you have to add them to everything. Like one more property. Feels like putting a tumor on everything required to save. I'm not making every single class in my game care about their savegame stuff, and there's already a simple way to do it. 😄

[gentle urchin]

Thats a fair point

[spark steppe]

i'm 100% certain that your approach works for most games

[maiden wadi]

As the UI Programmer. Don't forget that half of my job is going into gameplay programmer's territory to fix the things they won't fix because their code sucks and the UI is bugged because of it, but they aren't going to do anything about it. 😂

[spark steppe]

but not for all

[gentle urchin]

wouldnt other world be another path entirely ? I might've missed the issue here lol

[spark steppe]

depends? ™️

[maiden wadi]

The other world shouldn't have been loaded when you saved the game then either. The entire point is to simply set stuff back up the way the player left it when they saved.

[spark steppe]

for streaming levels not, since they spawn in the persistent level

[spark steppe]

the other world could have saved it's state to the savegame on unload tho

[maiden wadi]

Like when the world was unloaded due to gameplay reasons? Walking too far, etc?

[spark steppe]

yea, like streaming in/out levels

[maiden wadi]

Right. But it'll be in the savegame still at that point. And it isn't like you're going to load that world the moment you load the save where it wasn't loaded in either. You're simply putting the world state back to where it was when they saved. It's up to the gameplay systems to reload that data back in when that sublevel becomes relevant again.

[spark steppe]

yea it will still be in the savegame with a stall reference

now you spawn 4 (now 2 again), and that stall reference somehow resolves

next time the world gets loaded

[maiden wadi]

Like Squize said though, those are different paths. Sublevels are outered to the primary level. Objects within that level are outered to that sublevel.

[spark steppe]

all will be pathed to the persistent level

or not?

if you spawn something dynamic

[maiden wadi]

Depends on how you spawn it. Normally runtime spawned things are outered to the persistent level, yeah. But those are also not removed via sublevel unloading either.

[spark steppe]

yea but the actor which references the object in question is "static" in the world

e.g. a celltower linked to your mobile phone (bad example, but just to give an idea)

[maiden wadi]

This is a bit beyond savegame stuff though. It's very rare that you save unloaded levels. Even huge open world games rarely do that. They save gameplay states, stuff that has happened and load recreates it close enough. Saving an open world would lead to some wildly huge saves(looking at you X4 and your 30 second save times on an nVME)

Just Cause for example simply restarts you in a place near your last saved spot. All enemies normal, world chill, etc.

Skyrim only saves what is directly nearby and objects that have been moved and dungeons that have been used within 7 game days, as stuff will trigger and happen as you move. A lot less than every single object in game.

[spark steppe]

cmon, admit that i found the edge case which has the same chance as an FGuid conflict 😄

[maiden wadi]

Like I told the guy waaaay above. 😄 No solution is perfect for all cases. But honestly, I'm more inclined to just throw what I need in this savegame method and reload them. It's a lot less work than handling guids on everything.

Bonus is that you can save everything. Subsystems, Actors, Components, UObjects. 🤷‍♂️

[gilded jewel]

anyone know if you can swap between a player controller on pause ?
I've got different game and menu player controllers which have conflicting button assignments

[spark steppe]

no, you cant

with enhanced input you would register/unregister the necessary input mapping context

[gentle urchin]

which is very very handy!

[gilded jewel]

ah nice, haven't done this before will have to look into it, thx

[maiden wadi]

I tend to end up with a relatively blank player controller most times.

[dull wind]

trying to make a custom camera shake by copying over head rotation, anyone know what's wrong with this?

[maiden wadi]

Why not just use the camera shakes that already work?

[dull wind]

i want to copy over the head's rotations

i don't know if i can do that with camera shake actors

[maiden wadi]

I'm not sure of the use case you mean to be able to help better. Though I thought the shakes had access to their owning camera. Which would have access to it's owning character.

[gentle urchin]

it must have access to the owning camera

[regal iris]

Hey guys I’m wondering how I should implement a hotbar system or if my idea will work.

I have an inventory component which works well right now and data for items such as structs which contain the item blueprint class the player will pull out when equipped. I’m just using the typical 1,2,3ect keys to check for the item in that slot and equip it if it was found

Let me know if you guys have any ideas or think that’s good

[gentle urchin]

otherwise no shake would occur

[maiden wadi]

@dull wind Ah. My bad I was thinking of Camera Modifiers, not shakes. Still easier to apply.

[gentle urchin]

hotbar would mostly be a slot linked to an actual inventory index

Hotbar[0] - Inventory[X]

You could also react to the item in the inventory being moved, so it stays linked to that itemstack, and not the slot itself

[dull wind]

thank youu i'll check it out, making a custom camera is such a pain

[regal iris]

Ahh makes sense thank you
I was thinking making it a component as of the fact that I already have an inventory component

[gentle urchin]

Could be a component. Would be pretty easy, with just an array of hotbar slots, of ints to the actual inventory slot

and binding to the inventory changed delegate, to ensure that any bound slots are updated if the item is moved inside the inventory

[regal iris]

gotcha

is there a way i can just have one input for all the hotbar keys ?

so when i press 1,2,3,4 and so on itll give me a number of that: 1,2,3,4

if that makes sense

[trim grove]

Any unreal Jesuses wanna help a pheasant out? I have a problem with my combat that points at actor rotation when ai hits the player combat stops for the player. 3 days of trying to get past this one thing.

[regal iris]

figured it out guys

[carmine moat]

Hi everyone, it can be a simple thing to solve, can I borrow some brain please?
I made a blueprint that spawns a plank for every 20cm along the spline.
But I want the offset to be every 20cm in X axis in the world space no matter how much I curve the spline.
Any thoughts?

[gentle urchin]

gotta stop using spline distance then 😛

~~I made a cpp function for a similar usecase, ~~ It's actually wrong here

float ULibraryOfSquizeBPLibrary::FindLocationAtWorldDistanceOnSpline(const USplineComponent* Spline, float StartDistance, float Distance)
{
    if (IsValid(Spline) && Distance > 0)
    {
        FVector Start = Spline->GetLocationAtDistanceAlongSpline(StartDistance, ESplineCoordinateSpace::World);
        float i = StartDistance + Distance;
        float WorldDist = FVector::Distance(Start, Spline->GetLocationAtDistanceAlongSpline(i, ESplineCoordinateSpace::World));
        while (WorldDist < Distance && i < Spline->GetSplineLength())
        {
            i += (FMath::Max(Distance - WorldDist, 0.001f));
            WorldDist = FVector::Distance(Start, Spline->GetLocationAtDistanceAlongSpline(i, ESplineCoordinateSpace::World));
        }
        return (i <= Spline->GetSplineLength()) ? i : Spline->GetSplineLength();
    }
    return 0.0;
}

Testing it now, the accuracy is less than expected for some reason

the worst one is very wrong

[carmine moat]

I actually don't use CPP, but somehow managed to do it with BP for now

[gentle urchin]

oh actually

its not even right for your fence usecase either way

you want an exact distasnce on XY regardless of Z

[carmine moat]

this did the job

[gentle urchin]

looks like it would break if it wasnt straight line

[narrow sentinel]

anyone had any interactions with Landscape and foliage on landscape and when you bake the level you get an warning moaning lightmap not support etc

I've followed something online that says to change LOD group of the meshes used to foliage, I've done this and now my landscape grass seems to have disappeared from most of the landpscape tiles apart from liek 4 tiles

for example

<None> === Lightmass crashed: ===
Assertion failed: rtcDeviceGetError(EmbreeDevice) == RTC_NO_ERROR [File:D:\build\++UE5\Sync\Engine\Source\Programs\UnrealLightmass\Private\Lighting\Embree.cpp] [Line: 721] 

0x00007ff76d233f61 UnrealLightmass.exe!Lightmass::FStaticLightingSystem::FStaticLightingSystem() []
0x00007ff76d1e11ff UnrealLightmass.exe!Lightmass::BuildStaticLighting() []
0x00007ff76d2081e3 UnrealLightmass.exe!Lightmass::LightmassMain() []
0x00007ff76d22b2bf UnrealLightmass.exe!main() []
0x00007ff76d29a10c UnrealLightmass.exe!__scrt_common_main_seh() []
0x00007ffc3ee2257d KERNEL32.DLL!UnknownFunction []
0x00007ffc3f7aaf28 ntdll.dll!UnknownFunction []



0x00007ff76d233f61 UnrealLightmass.exe!Lightmass::FStaticLightingSystem::FStaticLightingSystem() []
0x00007ff76d1e11ff UnrealLightmass.exe!Lightmass::BuildStaticLighting() []
0x00007ff76d2081e3 UnrealLightmass.exe!Lightmass::LightmassMain() []
0x00007ff76d22b2bf UnrealLightmass.exe!main() []
0x00007ff76d29a10c UnrealLightmass.exe!__scrt_common_main_seh() []
0x00007ffc3ee2257d KERNEL32.DLL!UnknownFunction []```

I get that error as well

[cerulean prism]

bit of a noob here. trying to understand communication between objects. where would you store, for example, the var "AimMode" in this scenario? the player can change this on demand with a shortcut

• GameMode (currently does nothing)
• PlayerController (uses and changes the variable with inputs events)
• UserInterface (wants to show the value only),
  I'll most likely use it from more places in the future. Should I put it in GM and send an interface message to the GM from PlayerController on player input? Should I then notify the UI with a custom event?
  My question, through this example, basically is, how are game-wide variables handled? ty

[gentle urchin]

Controller , altho it is hardly game-wide

If necessary id have a delegate for when it changes

For ui to latch on to

[crude pike]

that node is for the Anim Graph iirc

for blending the actual poses on the animation side. Idk if you can access it in the event graph since that is only used for controlling logic on the code side

[high iris]

Is it possible to attach the same component to two different meshes? I'm using a store-bought template which takes care of FPP and TPP perspectives, and I noticed that when equipping a weapon it attaches the same weapon mesh twice, once for each of the character models.

Is that actually possible in the UE world? As in, can something be attached multiple times?

[visual ember]

if this is per player (which you might want even if only single player), PlayerState would be a good place for that. as of how to notify UI, you most likely want to fire an event that UI responds to. alternatively, let UI probe the PlayerState. but never try to call the other way, that is from gameplay component to UI

for simplicity, when dealing with single player, you might use GameState as well

[narrow sentinel]

Anyone in here ever had it where a pcg graph in a level will cause issue in terms of the build lighting not failing

If I take out pcg in my level light build works but pit pcg in and well it fails

[lunar sleet]

#pcg-framework maybe

[viral sequoia]

Found a thing while tried to use EQS in non AI context:
Epic added bool GetQueryResultsAsLocations(TArray<FVector>& ResultLocations) const which returns locations into passed by reference array and marked it as BlueprintCallable.
Thus there is no way to use it in blueprints because you can't pass an array by non-const reference as argument in blueprints.

BUT, what is also funny is that they marked TArray<FVector> GetResultsAsLocations() const as deprecated. And the main argument to that is DeprecationMessage="GetQueryResultsAsLocations instead, which is more efficient itself and protects against very bad perf issues in some blueprints."))

[gentle urchin]

Lol

[willow gate]

Hey smart friends. I have a question that I really should know how to figure out but I'm stuck. The image below is of my movement input. I have the camera set at an angled top-down kind of view (like Diablo games). I'm avoiding saying isometric because this is true 3D but that's the kind of camera view I have set up using a camera and spring arm. Everything technically works just fine my only problem is that the way it divies out input values, I'm really only getting 8-directional movement. This would be fine if I didn't have ranged combat but aiming can only be done at 45 degree increments and I'd like make the player face the exact angle I'm pressing on the gamepad thumbstick.

[lime moat]

Hey yall, i'm having a weird issue where my event wont trigger, and I can't figure out. I have a loop checking through a list of actors, if the actor has an index that matches with the index of the loop, the node triggers fine. However, the node it supposed to trigger an event on that actor. The event that should be triggered is "E_setTotalBananas".
quick recap, the node fires find in the forloop, but not actually firing on the main BP Actor that has the node "E_setTotalBananas"

[willow gate]

Why is it that I often spend an hour or two fighting a problem, then I post a question in here and then figure it out shortly after? 😉 For anyone who might be experiencing similar things, I updated my character movement rotation rate. It was 360 in the Z axis which was basically snapping my character rotation to the input axis values. By lowering the number, the character rotates at a slower rate toward the desired rotation.

[lime moat]

Happens to me often as well. In fact, i'll sometimes ask questions, knowing that if I ask theres a good chance i'll shortly figure it out after XD

[maiden wadi]

You can only attach one scene component to one other scene component.

[high iris]

Ok. Sounds like this logic might not make a ton of sense then. Wonder why it's the way it is.

[maiden wadi]

It's usually about writing it out. Rubber ducking. You pull yourself out of the mindset you're in and look at it a bit differently when you're trying to explain it. I find I tend to start writing up questions only to realize the answer halfway through.

[maiden wadi]

Can you show more of the logic?

[willow gate]

True. That makes alot of sense.

[high iris]

This is pretty much it. The weapon is an Actor and the two meshes are Skeletal Mesh Component instances

[maiden wadi]

Ah. This is common.

It's two different meshes being attached to different parents.

[high iris]

Ah I think your'e right, seems like the weapon actually has two meshes of its own?

[maiden wadi]

Correct.

If you look at them they probably have different OwnerNoSee and OnlyOwnerSee flags set.

I really wish they would rename those flags. They're a bit misleading.

Should be SeeAsViewTarget InvisibleAsViewTarget, or something.

[lunar sleet]

Why? I thought it’s “whoever owns these arms (for example) can/can’t see them”

[maiden wadi]

You have three players. 1 and 2 are doing 1v1. 3 is a spectator viewing player1's pawn. 3 can see 1's first person view and by extension the first person weapon. 3 owns neither the weapon or the pawn.

Hence the point of changing it to ViewTarget instead of Owner. It really has nothing to do with the Owner except that the Owner is "Normally" the one who would have the pawn as it's viewtarget.

[lunar sleet]

Ah makes sense

[hollow karma]

Ah well there you've hit on one of the exceptions I mentioned above: memory constrained situations. In this case constrained by the need to process lots of memory very rapidly.

But in most programming, bitfields don't really gain you anything. I would never use them, for example, as a substitute for boolean feature flags on an Actor derived class since it that kind of case the potential performance gains and memory savings are negligible. The OP didn't specify any specific use case, though

[pine creek]

What is your goal with the branch? Is there a reason that the designated level index needs to match the arrays element's index? If the branch is simply to validate the order of levels, then maybe make that a separate function from the banana population. Once you confirm they are correct and if you even need to confirm that, then just grab the index and feed it into your banana logic

[lime moat]

Yes the branch’s purpose is to verify the index variable I manually assign to each level, to the index to ensure the correct level is being assigned.

When you say make a separate function, do you mean I should assign the index to each level loader via a loop before I try to call the function?

[lunar flower]

Is it not possible to change world gravity at runtime from blueprint? 😵 I am able to get these values, but not set them

Changing gravity in the character class won't work as I am not using the character class

[copper karma]

i think

you need to change the world gravity at runtime from blueprint

[pine creek]

Yes the branch’s purpose is to verify

[pine creek]

what bp are you in? can you set them from within your world setting bp? if so, can you get a ref to that and pass a new value to it from the actor you are trying to control?

[frosty heron]

@lunar flower not exposed to blueprint by default but it's trivial to make a cpp function to overrode the gravity

It's as simple as grabbing the world setting and changing the gravity value

https://forums.unrealengine.com/t/changing-world-gravity-with-custom-c-node-in-blueprints-not-working-during-runtime/560926

[modest monolith]

I have a sound component that triggers an event once finished "Assign event On Finished". The problem is that it triggers the event even when I interrupt this sound when I interact with it but I don't want that.. How can I fix this?

[dawn gazelle]

Unbind the event when you're interacting with it?

[pine creek]

Or check its progress and if its less than 1, dont go through with the event

[modest monolith]

hmmm lemme see

[modest monolith]

how do I check the progress?

[modest monolith]

i can't find any unbind event

[dawn gazelle]

You'd use something like this. The second node you'd call when you want to unbind the event.

[modest monolith]

and what unbind does?

do I should use Bind event and write the event that will trigger
and on interact use unbind event without any event?

[dawn gazelle]

These are event dispatchers. When you bind to an event dispatcher, it'll listen for when that dispatcher is called and execute your bound event. Unbinding means you're basically telling it to stop listening for that dispatcher and stop it from calling the associated event.

So in the code above, I'm basially telling it to execute the "OnFinished" when "OnAudioFinished" is called from the Audio component, but I'm also immediately telling it to unbind the "OnFinished" event from "OnAudioFinished" - effectively cancelling out the original binding.

[modest monolith]

so I should put unbind on the interaction event right? (interaction event it's basically pressing E on the object)

[dawn gazelle]

Yep

[modest monolith]

let me try

and shall i connect the unbind to the onfinished event like in the bind?

as shown in the pic

[steady night]

hey ive got some weird tic or something that like every 2-3 seconds drops my fps big fps spike any tips on how to troubbleshoot ? im not using any "very tic events"*

https://gyazo.com/bd1833d722eb42d7c93cc2cabb65ef81?token=260ec8782211027173417173904f53d9

[modest monolith]

It works!!! Thank you a lot !! 🫂

[past hull]

hello,
Why can't I find the multiply by float node ?

[steady night]

The lag is in the editor also :/

[dry sleet]

You can run Unreal Insights to check, I suppose.

[steady night]

hmm but the lag was in editor also... i rebooted lets se

[dry sleet]

Unreal Insights can be run just fine against an editor session.

[steady night]

oh

[dry sleet]

It's probably just Unreal doing some background tasks or housekeeping. What's important is whether it happens in a built game or not.

[steady night]

aye seems to be gone after rebooting so

[dry sleet]

nice

[steady night]

phew

though something was really wrong

[modest monolith]

Do you know why only one actor is being set as correct one and not all of them?

[spark steppe]

yes

[frosty heron]

Because you are just replacing correct fuse box consecutively

Is this some misunderstanding on how ref work?

[spark steppe]

i guess he want's one random?

maybe use get random array item instead of a for loop

[frosty heron]

He said all of them tho, I'm not sure the goal here

[spark steppe]

he could also mean why not all are considered as a valid option

[frosty heron]

But yea what Ben said if you need random element from the array

[modest monolith]

there are 3 actors in that arrray and I want them all to be set as "correct"

[spark steppe]

that wont work that way

[modest monolith]

ah.. hehe

[dry sleet]

What you're doing there is equal to:

AFuseBoxActor* CorrectFuseBox;
CorrectFuseBox = FuseBoxesArray[0];
CorrectFuseBox = FuseBoxesArray[1];
CorrectFuseBox = FuseBoxesArray[2];

[frosty heron]

You can have another array for your list of "correct fuse box"

[dry sleet]

as you can see you're only replacing the CorrectFuseBox variable three times consecutively

[frosty heron]

Array = a list of an element.
A variable is single value

[spark steppe]

i feel like this wont lead anywhere without more context of what his actual goal is

[modest monolith]

ah right coz it's not a boolean fuck

[visual ember]

or just learning about variables and references

[frosty heron]

Doesn't matter even if it's boolean

[modest monolith]

i want all of them to become correct and not only one

[spark steppe]

but why?

for what?

just use the existing array if they are all considered valid anyways

[visual ember]

define concept of "being correct"

[dry sleet]

Unless you want a boolean inside the FuseBoxActor which determines if that one is "correct"?

[modest monolith]

This is normal mode where one at random becomes correct but in easy mode I want all of them "correct"

[modest monolith]

that if you interact with the correct fusebox lights will turn back on

[mental trellis]

I'd say it's when you have a black mage avatar.

[frosty heron]

If you want multiple "correct fuse box" make another array

Array can have elements

[spark steppe]

that's not how difficulty works in my book

[frosty heron]

A variable may only consist of single value

[mental trellis]

(at a given time)

[visual ember]

checks out

the reference/variable can store one value only. you can "put" one fuse in it. no more

(I got distracted and missed people already wrote that :V)

[spark steppe]

btw

hard mode is the easiest mode 😄

since #1 will always be correct nvm

[zealous moth]

when possessing a pawn, is there something blocking the input? I enabled input and set input mode game only, but it won't respond (like my dates)

[modest monolith]

after the for each loop?

[frosty heron]

You don't need loop if you want everything in the array to be arbitrary considered valid

Can just set the fusebox array to a correct fuse box array

That will copy all the ref currently in the fuse box array

[spark steppe]

and fill it with 1-3 from the other array

[frosty heron]

Although I still don't understand why do you need it to do it this way

[dry sleet]

Or just move the difficulty logic to the part where you're interacting with the fusebox, and if it's easy, just always accept it.

[modest monolith]

??

[spark steppe]

or just remove 0-2 from the main array, which will be easier for you, since you don't have to deal with duplicates

[modest monolith]

hm true. I could just get all actor of class and set correct

no?

[frosty heron]

Think of array as container or basket

You better of learning how it works first imo, or you will get confused

[visual ember]

I would say go back to basics and learn about variables, references, arrays. everything will clear up and you will just implement instead of asking about every single step

[modest monolith]

@frosty heron ?

[frosty heron]

What you can say in plain English is, if the fuse box is inside the correct fuse box container, then do X

[modest monolith]

this is weird

[dry sleet]

And in Blueprint you do that with the Contains node.

[modest monolith]

Alright sorted my way. I'll just make the even trigger by interacting without checking if the box is correct since they're all correct

gg

[high iris]

What's the most elegant way of visualizing a value I might care about on the screen while testing the game? E.g. I might want to know the current velocity of the player without using a Print note on Tick. Is there a built-in tool for this that folks would recommend?

[frosty heron]

Not gg, it's a W today if you learn the basic of array. Understanding it will help you immediately and for the long run.

Learn how to declare array, how elements are pushed and removed. Indexes and how to replace element by index.

[frosty heron]

You can create your own debug widget but you can just print string on tick, what's wrong with that.

I don't think adding debug lines are more elegant.

[modest monolith]

Game has been released long time ago. I just had to add easy mode but surely I will on next game

I can't go ahead with miracles lol

[frosty heron]

No need miracle, just attack what you need to learn.

@high iris if your issue is with print string making new line, you can set a key in the print string

Change the color too, it will be easier to differentiate what print what.

[high iris]

True that. When you mention a debug widget, are you referring to the UE visual logger? I think I read a guide a while back about adding your own section to it to have your own vars there at all times.

[frosty heron]

I don't touch that, it's not worth it to spend my time on it imo. Since I don't have any complex systems whatsoever I don't have the need for it.

You can look at some examples like show debug animation

Or debug gameabilitysystem or something like that. Those arnt widget and probably require more time to setup

Not to mention cpp only

Atm I just create a regular widget to read some stuff if print string doesn't do justice

[pine creek]

UE5 just has generic multiply functions now. place the multiply, then right click on the node and click convert to float

[past hull]

thank you!

[high iris]

Roger, thanks for sharing that!

[dry sleet]

I know some people run ImGui inside Unreal for purposes like this but it might be a bit overkill!

[crude pike]

I wish i could ask this as a more informed question but I'm very confused by this point 😅

Has anyone ever experienced weird issues where a Blueprint Actor contains a SoftObjectReference to a level file, even though there's not actually anything in the BP that could be referencing the level directly? I have a few Actor variables but even when I delete the code and variables, compile and save the BP, the reference to the level doesn't go away... It just lingers there and I am unsure why. Is there a way I can forcefully delete the reference to the level, but NOT delete the level asset itself?

I'm sure I'm missing something ofc, but I just can't find any refs whatsoever and it's causing my PAKManager to generate a pak file that is 9GB, when really it should be 1MB. All because this map is somehow referenced by the BP.

[dry sleet]

Annoying. The only thing I can think to suggest is to temporarily reparent the blueprint to another parent, and back again, to jiggle the serialisation process a little.

I'm not sure what effect it would have in this case, though, and of course it sucks to do that if you have inherited variables.

Hopefully someone can give you a better answer!

I guess explicitly specifying Levels To Cook in the packaging settings could be a solution?

[crude pike]

I'll look into that, it could lead me to figuring out more to do with how UE packages stuff. 🙂

Though it might not 100% work in this case sadly. I'm using a custom PAKManager tool to create .upacks (still using UnrealPak.exe under the hood) so it doesn't cook anything. It just preserves the Editor uasset files and adds them to a upack. Part of the GetDependency process involves retrieving all soft and hard references by default, and it's now picking up the level file as a dependency of a relatively simple BP. 😅

I'll try make a brand new BP from scratch though and copy my BP nodes/vars/components across and see if it reproduces the issue. I'm hoping it's solveable and somehow a reference just got created recently and somehow never cleared

[dry sleet]

It does feel like that would solve it.

If it really isn't referencing anything at all -- otherwise the process might help you spot the errant ref I suppose!

[mild ice]

Have you tried running Fix Up Redirectors?

[crude pike]

yea, I ran it on the whole Content folder a few times but it doesn't seem to be picking any up

Made a new BP, copied all my vars/components/construction script graph. I didn't even place an instance of the actor into the level, and it's created the same SoftObjectReference to the same level. 😅

I'm using Render Targets and CineCapture2DComponents though so I think the issue lies somewhere in there.

gonna just have to start copying my BP's vars across one by one until it eventually makes the reference again and I can see which action caused it.

[lime moat]

hey yall, i'm having an issue with saving my file. not sure if structs have an issue saving, but i can see the data in the save file within the struct, and I save it, when I load the game, struct is back to default 😦

[gritty sphinx]

I am trying to make a planet system and whenever I orient the players forward vector to be the world to gravity transform it produces weird flipping like shown in the video, its almost like its orbiting the negative z vector

[crude pike]

Thought so... deleting the CineCaptureComponents got rid of the SoftObjectReference to the level but that's not exactly a good solution considering the sole purpose of the Blueprint is to capture to render targets.

There isn't actually a render target assigned to the capture component, and there are no instances of the BP in the level. 🙂

EDIT :

nvm, that was because I was copying the CineCaptureComponent2D from the old BP (which IS instanced in the level) to the new BP (which is not instanced) and it made the SoftObjectReference.

Creating a new CineCaptureComponent2D in the new BP from scratch and assigning the RT doesn't produce the issue. So in conclusion, average ue5 experience.

[empty marten]

Are you creating the save game object before saving to that save?

Before you can save to a game slot, you have to create the save game object, you can then do a check called "Does Save Game Exist" and if true, you can then use "Save Game to Slot"

[empty marten]

The SaveGame Actor I made in the content browser and is just a SaveGame class.

Inside the SaveGame actor you create all the variable types you want to save.

[hazy hawk]

Hey! im trying to currently finish up getting a jet to have its wings fold inwards whenever it reaches a current speed and cant figure out the terminology to do so. Is anyone familiar with getting an object to rotate a certain way when it reaches a specific speed?

[empty marten]

Would you not just reference the speed and when it gets larger than x tell it to fold the wings in?

[hazy hawk]

I honestly am not sure

Im totally new to unreal lol

[empty marten]

Ah ok.

So in your character class, you can reference your movement component and you can use the "Get Velocity" node which you can then use a "Vector Length" node to get the speed.

[empty marten]

Here
https://youtu.be/6BfiAK_YATE

[inland walrus]

Do I need to reset the do once if I want it to keep checking every tick?

[empty marten]

yep

DoOnce is literally, do this thing once unless I reset it.

[empty marten]

Also this code makes me cry.

[visual ember]

Do Once and similar nodes have some underlying state machine and it persists on the owner. need to explicitly reset here

[empty marten]

Create a custom event and tell that to do all that code and then you can remove the do once

[hazy hawk]

So how would this then get used to get a wing to fold in at certain speeds?

[inland walrus]

Like this? xD

[hazy hawk]

that just looks like it reads out what speed its at

[empty marten]

Yeah it does. After that "Vector Length", just drag from that and do a is greater or equal to X and then tell it to put the wings in.

[empty marten]

Nope

Drawing time

Is that code in the widget we were working on?

@inland walrus

[inland walrus]

yeah

[empty marten]

So remember the on end reached?

[hazy hawk]

just realized i dont have a movement component .-.

the tutorial i followed did movement completely different

[empty marten]

Execute the Remove from Parent when that gets pinged. I'm assuming that's what you're trying to do?

[empty marten]

How did it do it?

[hazy hawk]

https://youtu.be/rzADPcSYF7c?t=317

[empty marten]

Lets have a gander.

[hazy hawk]

sorry im not great at explaining it

[inland walrus]

So when the display time is == to 0, it will say loading, when the display time changes it will remove from parent

[empty marten]

You're good. Don't worry.

[inland walrus]

but I want it to add again if the next episode is loading etc

[empty marten]

You plug it in correctly, yeah.

[inland walrus]

So I don't need the do once?

[empty marten]

No

[noble ledge]

Is there an easy way to add to this array?

[empty marten]

So you know you're getting the current speed?

[inland walrus]

I just tried it this way and it didn't work, but with the do once it does work

[hazy hawk]

in one of the variables? yeah

ive tried referencing that and havent gotten good results

[empty marten]

Yeah, drag from that and use greater than

Put the speed you want to achieve first

OK

[empty marten]

Why you break teh code dude XD

Pic

[lime moat]

I am creating/loading the save game file upon game opening. Good call on changing the create save file to bp save, I have a feeling I left it to default save. I’ll definitely check that, thx for the idea! 💡

[inland walrus]

This way didn't work lol

This way does

but I'm not sure if it'll need a reset or if it'll do it again every tick

[empty marten]

So you got event tick somewhere in your BP (if not add it)? From that drag off and put a branch node. For the branch plug in the current is greater than or equal to and then tell the branch to do what you want it to do.

[empty marten]

Essentially you want this.

[empty marten]

Would you like me to ping you a YT video that goes through creating a simple save / load system? I used it myself and its really well explained 🙂

[hazy hawk]

so that worked, is there a way to then have it gradually extend? IE at certain speeds it only goes out so far?

[empty marten]

Yeah this won't cos you're running off event tick. Try running the code off "OnEndReached" that we used so it does the loading screen at the end of a video playing.

[empty marten]

Are the wings being expanded out using an animation?

As in open / close with an animation?

[hazy hawk]

unfortuantely no

should they be to stop at certain thrust intervals?

[inland walrus]

Great idea, thanks mate

[empty marten]

You got into that long code issue again I mentioned to you before. Keep things simple 🙂

[hazy hawk]

say at like 5000 speed its fully open, and will gradually extend out dependent on how much thrust its given

[empty marten]

Yeah it can be done

[hazy hawk]

it can stop at any point in that movement

and not extend fully

[empty marten]

I'm just watching the video on how its setup first before comment so I can understand how its all setup a bit more first.

[hazy hawk]

thats kinda what im shooting for

[hazy hawk]

👍

[empty marten]

So when you say wings, which pare are you referring to?

[hazy hawk]

one moment ill grab a pic of my model

[empty marten]

thanks

[hazy hawk]

the large wings are ment to extend inwards, like a reverse swept wing jet

[empty marten]

OK. Can I see the BP you got them in, in the viewport please?

[empty marten]

Just in case
https://www.youtube.com/watch?v=14wmGdbhLOA

[hazy hawk]

would it be easier to discuss this in vc?

and i can stream it

[empty marten]

sure

[high iris]

I'm running into an issue where every time I re-compile a blueprint, both that blueprint and another similar blueprint get marked as modified and ask to be saved at a later time once I close the editor. I was using "Get Class Defaults" nodes in them at one point and thought that might have been the issue, but I removed them, and that still seems to persist.

Curious if others have seen anything similar happen before.

Ah ok, rebooting the editor after removing Get Class Defaults seems to have done the trick, odd.

[empty marten]

Yeah sometimes when you get errors referencing old variables the editor gets stuck in this consistant error message bug. Closing and opening editor normally fixes like 90% of the time.

[hollow karma]

Just updated my code to use the path and it works perfectly. Thank you for that tip!

[lime moat]

Hello! I'm having an issue saving. I can see within the save node, that the data within my BP_SaveGame, is there, and correct. Upon loading the save game (which it does see as existing) it then does not load any data from my struct. Any ideas what might be happening?

[hollow karma]

You have to read the struct yourself and update the level as needed. The save game object is just data read from the disk. It's up to you to actually go through the data and use it to restore the game state

[spice viper]

Anyone have any idea why my cutscene (LevelSequence) is not playing? I want it to start when the player uses a switch. The switch works, but the player doesn't possess the camera in the sequence? If I put this sequence in the Level BP's BeginPlay and auto play it, it works fine? But I need this to happen at the END of the level, not the start.

[marsh pilot]

How do I get a component from the actor class I defined in the overlap node? It seems to not output the actor type like the get all of class node does

[lime moat]

I store my data within the BP save, and load my data from the same save. I know I must repopulate my levels from the save. Problem is it doesn’t actually load the data.

[graceful sage]

Are you loading from same slot name

[graceful sage]

Cast or use an interface

Or maybe try disconnecting for each loop. Compile. Then replug

[lime moat]

yes, same slot name

[marsh pilot]

Yeah I thought this would work but unfortunately not. I'll have to try casting, thanks!

[graceful sage]

Where are you trying to load

[lime moat]

my save/load code is in my gameinstance

[graceful sage]

And when do you call

[lime moat]

beginplay off of gamemode

heres my save/load code

[sudden nimbus]

show Save Game on game instance

[lime moat]

sure thing!

[sudden nimbus]

are you not putting anything inside the save game? I'd expect it to be empty when you load it if so

[lime moat]

I have a struct within my BP save game

[sudden nimbus]

are you populating data into save game ref before you call the save ini? because you overwrite it in that method

[lime moat]

no, check out this screenshot. Save game is my last on complete within the for loop after populating my new data within BP save game

[sudden nimbus]

is "Save Ini" a bad name? that's your loading code?

I guess you just create an empty save object on load to get started

perhaps you are writing the save somewhere else and you don't realize it, or perhaps you have two save game blueprints, and you are casting to a different one when loading than what you save

other than that I don't see an obvious mistake, assuming what I said above is true

[lime moat]

yea save ini is my initial loading code within game instance
I'll check for other places I might be calling the save, thats a good idea.
I don't have another save BP. I appreciate the ideas, ty 🙂

[sudden nimbus]

oh

there's a flag on bp properties you have to set to have them persisted in the save game

do you have that set?

@lime moat

eh

actually if i remember correctly this might be for that really weird saving stuff unreal can do

yeaahhhh thats right, this isnt relevant

[marsh pilot]

Another question, why am I not getting a cast to RailRef node popping up?

[sudden nimbus]

do you mean cast to BP Rail Base...

RailRef is the variable, you dont cast to variables, you cast to classes

[marsh pilot]

Ahh I gotcha

[lime moat]

I'm not seeing that option within my BP save

[sudden nimbus]

it's an option on each property of your blueprint, but I don't believe you need to set it

it's deceptively named, and by default does nothing (you have to write an archiver to make use of it)

[lime moat]

yea I don't remember having to set any such options on previous projects with saves/loads.

Where can I find it? I'm not sure where to look for the property/option other than the properties within the save BP

edit: oh I see you said I need to write an archiver to use it. Not sure what that is! 😮

[frosty heron]

It's for cpp use

[sudden nimbus]

you don't want it, it's not your problem

[frosty heron]

Make sure you pull out the struct from your save game object (obviously make sure it's loaded too). I see that you have a select node where the other struct is empty

[tribal gazelle]

I'm trying to display the direction like a compass (N/S/E/W) and wondering if there is a better way to calculate the direction based off the player's yaw

[faint violet]

cant you use a > check and set an enum?

[pine creek]

two things that might work are the following: divide the yaw by the number that will result in the number of compass labels you want (if you want 8 labels, divide yaw by 45), then round or truncate that number and that will give you an integer index to select from an array of labels

the other idea i have is to make a float curve from 0 to 360 and set the height in each angle window to the index value you want for your array of labels

[lime moat]

Yeah the data is properly loaded into the struct, when I debug I can see all the info in my bp save. The only problem seems to the actual saving isn’t occurring.

[lunar sleet]

Probably not

[frosty heron]

Did you set the struct inside the save game object before save game to slot?

[storm shale]

It don't necessarily think (the image u shared) would be different; That's just having hard references to all that stuff

[signal plover]

Hello here I am building apk and its size is 523 MB, I deleted some assets which were animations, and tried rebuilding the apk but the size is still same. Why ? Does unreal cache items for the build ?

[spare hamlet]

Hey, I'm currently trying to create a kind of mushroom-picking simulation for a private project.

The mushrooms should spawn as realistically as possible, i.e. only in places where the soil and vegetation conditions are perfectly suited.
In the first stage, I want to assign values ​​to certain regions or places in the landscape before I start querying the vegetation in the area.
That means every point in the landscape has values ​​for the pH level of the soil, the moisture of the respective place and so on.
How would you implement this so that fundamentally different places in the landscape can have different values?

[frosty heron]

You would still have to use soft pointers Wether you want to use data table or data assets

Textures, materials, meshes, sound, they can all be soft ref

[lime moat]

yes, my struct is loaded in as a variable within my BP_Save

[frosty heron]

This pic alone doesn't say much unfortunately. I personally never have issue with save game object. Did you try to print the values before saving, after saving , re open the game and load?

Watch variables are not to be relied upon

[lime moat]

I just found my issue. Feel like a fool as usual when finding the issue XD

So, I had initially had all my code in a BP_GameSate class I had made, as I thought the gamestate acted the same way a game instance does (constantly loaded even through a map change)

well... having 2 saving codes running along next to each other ain't such a great idea 😅

[frosty heron]

@lime moat game instance runs when you first boot the game and terminate when you close the game

It is presistence object

Game state is not presistence

They get destroyed upon level load

[lime moat]

yea, I found that out a few days ago when I noticed all my data in gamestate was getting destroyed upon map switch... Just forgot to clean out the save code from the gamestate XD

[dull wind]

a simple way would be to divide the landscape into grids or tiles to differentiate between different regions and then make further sub-tiles to differentiate between different parts of region

[gentle urchin]

in the end its just one large Array of "SoilData"

mapped to a grid on the landscape

then you can either hard snap values between cells, or interpolate for a smoother transition

You might want a few different arrays for the different 'layers' affecting the location

they'd all be mapped in the same way

[proper flower]

someone knows why ,in absence of gravity and with physics enabled, if I apply a torque to an actor, it won't work smoothly unless reacching a point of force?

[gentle urchin]

#chaos-physics or #legacy-physics

[gentle urchin]

how it'd work in principle

[spare hamlet]

Yea, thats a way.
i tried something simmmliar with the help of ChatGPT 4o but it never came to that grid result. ^^

Thanks for that Imprppession, I'll see how I can implement something similar.

[gentle urchin]

assuming you're using a cursor, you'd want to grab the curstor hit location (if its on the landscape), and use the X/Y coords to map it onto an array of data

so hit location
X:371.1236781 Y: 215,131 might translate to X : 37 , Y = 22if you're having a cell size of 10 by 10

Mapping that to the array would be X + (Y * MaxX)

37 + (22 * 50) = 1137 (if 50 was the last index on X)

[spare hamlet]

Yea, that made sens.
And the Mushroom spawner identifies, whats in the grid cell and compare it to the different mushroom conditions, and when something is good to spawn, then it spawns en mushroom there. ^^

[gentle urchin]

Exactly

If there's more rules (like they usually grow on the south side of tree's to get the most cover from the sun), then that's additional checks you'd do once you've found suitable cells that have the correct soil conditions

[spare hamlet]

Thanks. The PlayerController, Mushroom Interaction, Menus etc. werent the problem.
But that, seems to be a number to high for my actual knowledge. ^^

[gentle urchin]

SoilArray -> Filter by Mushroom Soil Criteria -> Check the filtered cells for other vegetation -> Place mushrooms

[spark steppe]

i think with some head twisting one might be able to encode the data into a landscape layer

[spare hamlet]

Yea, thats what i have planned.
My first and biggest problem the last 3 Days was to give specific places in the landscape some Information and Read it out. ^^ I tried dozens of methods but nothing works. xD

[spark steppe]

and paint it on the landscape :>

[gentle urchin]

A simple trace (hit under cursor in playercontroller) would do the trick for the cell location lookup

[gentle urchin]

yeah that could be pretty cool

you could have the landscape auto spawn them aswell using the layer information I believe

[spare hamlet]

Uhm, yea but the player doesnt need the information. its only at the beginning. while the player is in loading screen, the world will populated.

[gentle urchin]

right alright

are you gonna randomly generate the world?

[spark steppe]

there's also a helper function in BP, you pass in a (world) location and it gives you the x/y cell for a specified grid size

[gentle urchin]

That's pretty neat

[spark steppe]

GetCellIndex (wait that was c++)

[gentle urchin]

they also got the SnapToGrid

which is usefull for things like this

[spark steppe]

maybe that's the BP one ^^

[gentle urchin]

i instantly thought this was a top down, but it may not be?

[spare hamlet]

Ehm, no i want to make them by hand. I have some refferences and want to design the level without procedural generation. But because, i dont have an big knowledge about PCG.

[static sequoia]

I am following a tutorial but he had an error. I am spawning an object every 3 seconds using a "Spawn Timer" Variable and a set timer by function name that is running at event beginplay, when I have destroyed that object 5 times it updates the spawn timer variable with some math and the print string is giving me the right number, but I have no idea how to make it actually update the set timer by function name.

[gentle urchin]

you need to call SetTimerByFunctionName again

[static sequoia]

idk how to do that properly

[spare hamlet]

Thanks for your help. I appreciate it.

That means, first thing to do now is to figure out, how i can made a grid for my landscsape ? ^^

[gentle urchin]

Instead of having it on Beginplay, create a custom event called "StartBugTimer"

and call that from beginplay

and call that after the decrease spawn timer replacing the print string

[maiden wadi]

Proc gen is fun. 😄

[spare hamlet]

It looks impressive. but it looks also very complex. xD

[maiden wadi]

It's surprisingly not complex though. Just a lot of data.

[spare hamlet]

Maybe I'll look into it for level design. ^^ I used Gaia in Unity back then, it was something similar, very powerful to create a lot in a short time, etc.

[gentle urchin]

Always been a fan of proc gen

havnt tested PCG yet tho

properly setup, im sure it can be used to speed up creating process big time

[spare hamlet]

When I think about placing every tree in a large forest area and everything else, I shudder. ^^