blueprint

[lunar sleet]

#umg can help with UI. Outer is cpp terminology

[lofty rapids]

multidimensional arrays not a thing in blueprints i'm pretty sure

[thin panther]

Multidimensional arrays are unnecessary anyway

[minor mortar]

Yes, The more I dig into it, the clearer that becomes. I'm currently looking into whether to just handle the data within the blueprint itself, which seems doable, or whether a structure is more appropriate. I haven't dealt with structs much yet though.

[minor mortar]

What do you mean?

[steel star]

because array of arrays, i suppose

[lethal ocean]

Hey, does anyone know if there is a more cost effective alternative to 2D Scene Capture Components? And if not best practices to using them performance wise? I have one in my scene that I would like to use but it tanks the fps

[steel star]

all actors seem to have a checkbox to disable/enable whether they are visible in captures, try turning off the most expensive stuff you can get away with

also perhaps dont draw it every frame, or maybe just once even

[minor mortar]

I guess the idea would then be to use the positional data to determine the exact location it lays out given the array size, etc, and then just use an array/structure to hold the bottom level data? That makes sense.

I'm just trying to store various types of data (ints/enum/etc) at a given row/col number. This looks pretty straightforward to do then.

[steel star]

well you could do it either as a flat array and doing math to convert from x,y based indexer into i (x + y*dim_x_len). but i was saying actually make it an array of arrays, then get element x, from x get element y

alternately just use a dictionary/map

[minor mortar]

Array of arrays seems like it might be a bit less math I have to do, which is always a benefit. lol. So, for my purposes... An array, within an array, that holds a struct of data that I call for the element I'm looking for?

[steel star]

yea, i mean makes sense to me, i have not done it in UE blueprints personally

[lofty rapids]

what is array of arrays ?

[lunar sleet]

Something you can’t do in bp

[steel star]

you cant do that either?

[lunar sleet]

Afaik no, cpp thing

[steel star]

that doesn't make sense

[trim matrix]

TArray<TArray<smt>>

[lunar sleet]

Notice the T in front of array

[trim matrix]

for template

[lunar sleet]

It also indicates cpp code being relayed

[steel star]

this is valid afaik, not sure what people saying isnt

i bet you make that a UPROPERTY with BlueprintReadWrite and it works fine

[trim matrix]

probably lol

[lunar sleet]

Probably yeah

But out of the box it’s not pure bp

Just like TArray::Sort doesn’t exist in bp

[steel star]

i mean, you can have a random bp and add a node 'make array' and for the type choose array? i guess thats the part the ui doesn't let you do?

[lunar sleet]

I suppose? I haven’t tried

[faint pasture]

How many entries are you talking about?

and is it dense or sparse?

Like say you had to cover a 100 x 100 grid, would EVERY spot have something important or just some of them?

[minor mortar]

So far, I'm testing it with a 15x30 grid. Each tile in that grid will have associated data, such as tile type, whether it's occupied, whether there are any other conditions affecting that tile, etc. So -every- tile has that information all the time. Not sure what you mean by dense or sparse beyond that though?

[faint pasture]

Your best bet will be to use an array and some helper functions to convert coords to index and back, or a map/dictionary

Key = coords
Value = Data at that coords

[minor mortar]

I think I get what you mean. Kind of like, a single flat array that I can add to the element of based on the row and columns to find the right entry, and then that array is a specific structure holding all my data.

Right now I'm working on filling out my struct with the data I need each tile to hold, then I'll have to figure out that part.

[modest monolith]

@harsh comet New legend of the server confirmed. This wouldn't have been fixed without a very attentive and patient person like him. Thank you! 💜

[harsh comet]

Happy to help!

[dawn gazelle]

Probably gimbal lock.

[steel star]

you are probably doing yaw (turning left/right) in object space and meant to do it in world space

[dawn gazelle]

Pitch can only go from 90 to -90. It doesn't do a full 360.

When you go beyond these values, it adds in roll and yaw to allow you to continue moving.

[steel star]

its about the rotation you are setting though

one style is like a flight sim

make yaw and pitch bp variables (not just local ones)

mouse delta = yaw/pitch ++ --

build rotation from specific yaw, pitch values

you are trying to apply a new rotation, on top of its current rotations

dont do that unless its a flight sim

dont get world rotation

your building a brand new rotation

and setting it, not multiplying it on top

it is the world rotation

set the world rotation, to the result of "make fquat from yaw pitch roll"

except idk the actual bp node name

you have 'compose rotators' but you dont want a previous rotation

yea quaternion

no

because a quaternions x,y,z,w does not equal yaw, pitch roll

yaw pitch roll is also called a euler

hold on. ill have to build and actually run editor

a euler angle, or euler for short, is a vector3 where x,y,z is yaw pitch roll

a quat is a 3d rotation, and can be constructed from or decomposed into a euler

and idk what a 'rotator' is in unreal engine really, im just talking about actual (math) computer graphics terms

you might even be able to just break the 'input' pin on your blueprint as you had it before, if that is valid for a rotator node

yea, if its unconstrained rotation applied relative to its current rotation, its impossible to ever get it back level or not upsidedown ;D becomes like solving a rubix cube

[cerulean igloo]

Hey folks. QQ. Let's say I have my PCG graph sorted out. How do I connect it to a BP that upon a game start or some other event, the PCG gets triggered with a random seed.

[steel star]

whats a pcg?

[cerulean igloo]

Yes

Is this roughly right?

I can figure out the rest if gpt is not hallucinating

[steel star]

BeginPlay

if its a component, it should have a begin play you can overload to do stuff

[steel star]

a keybinding conflict?
i had to rebind so that escape key is not stop simulation
in the editor prefs

[fervent jolt]

Hello, Does anyone know if it is possible to find a spline components point by collision?(See image) I want to find the spline point nearest an input vector, but searching all the thousands of spline components and then all of their spline points will eventually get very performance intensive. They are all bound to the same actor, and the function to find the points would be in the same actor as well.

orange is the landscape

[steel star]

does spline component not support collision?

[fervent jolt]

it would, presumably, now that I think of it theres more than one type of collision isnt there?

I might be able to make it work with that info, thank you

[steel star]

if you make each component its own child actor

that will allow them to be binned or whatever the world does for fast overlap testing

[mild jacinth]

if I have a text widget component placed in BP_MasterCharacter and I have a reference to the maincharacter, but during gameplay it changes to child reference , how do I gain access to the child Character BP without casting , so I can manipulate the child's text widget not the Master's text widget?

[steel star]

assuming that spline component at least has a bounding box

[fervent jolt]

i could probably add one, that sounds like a way better idea than what I'm doing, thank you very much!

[steel star]

idk what master character is .. just the base bp class for you?

[mild jacinth]

sorry I didnt clarify. Its a master character bp. at runtime it gets changed to the child reference

I can access the widget component

[steel star]

it gets "changed"?

[mild jacinth]

but I dont know how I can access exactly the child's widget

[steel star]

what is the child class name

and does it show the master character bp as its parent?

[mild jacinth]

child bp*

yeah

[steel star]

ok so it isnt being changed, it is allocated and includes everything about master, and is a master

there is only one property for your widget

[mild jacinth]

example: MasterCharacter -> ZombieEnemy1 (derives from MasterCharacter, so inherits Widget component)

I get access to ZombieEnemy1 while the game is running even though the base variable is MasterCharacter inside the blueprint

[steel star]

does zombieenemy1 define its own property that is a textwidget? no, right?

[mild jacinth]

so Im accessing the widget component, but its targeting the MasterCharacter component

[steel star]

there is no problem, because the mastercharacter being targetted IS the zombie

[mild jacinth]

ZombieEnemy1 is getting its widget from Master but it should be instance editable

[steel star]

there is no separate master character object

the zombie IS a master character

[mild jacinth]

how can I target specific zombie child class via blueprints to trigger for an example widget component's visibility...?

[steel star]

what is the error

[mild jacinth]

Its obviously not plugged in but even when plugged in the visibility is still hidden, and I think its because its targeting the Master zombie class but not the child class specifically itself

current target is ZombieEnemy1 while the lock on is running

[steel star]

but what is the error

[mild jacinth]

...?

[steel star]

in your image is shows error, what is it?

because i see no issue

[mild jacinth]

I just said in my text

its not plugged in

but even if plugged in

read

how can it target specifically this zombie child BP while the lock on is engaged but it cannot find whos the author of the component

there must be a way to set the component author

[steel star]

the component is always owned by the actor it is on

[mild jacinth]

even if inherited?

[steel star]

yes

[mild jacinth]

so it must be instance editable

[steel star]

no

because inherited components are not, usually

or you cant like remove them

unless you mean just that each actor that is a zombie has its own component with its own personal values

[mild jacinth]

so what im getting is that I have to setup the widget component for each enemy class (child classes) separately?

[steel star]

are you not already? where is your widget component now

it being in the base class gives every actor one

like there literally is no problem

thats why i asked what your error message was

oh by the way i just had to implement some widgetcomponent based reticules and hovor indicators for my own project

and i did it via a base bp class that is used for every that is unit in the game

but thats because i need it per unit, some other ones there can only ever be one of onscreen like a drag selection rectangle, so i did that on the character controller

[mild jacinth]

as an example ZombieEnemy1 is placed on the level and when using lock-on then it can find the enemy because its looking for all actors of class "MasterCharacter" and the lock-on works. Now, only the MasteerCharacter has the text widget. Its visibility is set to hidden on the Master. since ZombieEnemy1 child class gets the widget inherited, I want to set its own visibility to visible so it would be shown at same time

but its literally not setting its visibility to visible

its still hidden

[steel star]

maybe try debugging (simulate button) the blueprint and adding a print text node at the end, after the widget visibility call, and make sure its really occurring

also make sure it like .. has text assigned not just visibility ;D

if you need to get the widget on a different actor that isn't 'self' then you have to at least have the actor

[mild jacinth]

GetWidgetComponent->GetVisibility->EnumToString->Print string -> returns Visible, interesting

[steel star]

yay! progress though.

information = progress

[mild jacinth]

The child is the owner of the component->GetOwner->GetDisplayName->print

I will do some debugging.. weird day 😕

[empty light]

Hey guys, I have been trying to set up the camera in the third person bp, to return to its origina position (behind the player) after a certain amount of inactivity.
It works, but I have run into two issues, a) if i move the camera while it rotates to its original position, i stop the rotation but cant controll the camera, b) i cant control the camera after its rotated back to its original position.

Do you have any recommendations or tips, towards what I should do ?

[steel star]

add print text nodes and try debugging the blueprint by toggling on the simulate button (and choosing a debug object, if necessary)

this would tell you if the input action is actually firing or not

[fervent jolt]

seems to me like the timeline could be hogging the execution pin so its stuck in that loop in the end maybe. perhaps try on the timeline plugging finished into stop to break the loop? idk

[empty light]

I added a print string now after EnhancedInputAction, and while the camera rotates to the original position, when i hover the mouse, it prints Input Working, yet the camera remains in the same position

[steel star]

put a breakpoint in the tick event

you might consider writing it as "time of last input" and then "if current time >= last time + X"

also

you are retriggering that timeline repeatedly i think

looks like you need a little state machine

[empty light]

You are right, the timeline keeps retriggering (I added a print string to check, and it prints non stop)

[steel star]

cool, sounds like your getting the hang of debugging issues then, core programmer skills ;D

[empty light]

Haha, thank you, I totally forgot about debugging xD

[wide summit]

I am moving my player character using force because I want to do things like add an impulse to it however I don't want the collision to be this accurate. How can I disable all the added rotation from collisions yet still have the player character not phase through walls? thanks!

[steel star]

looks kinda cool though with the wobble

[wide summit]

lmao yeah its like some go pro footage of an accident

[dry monolith]

Bumping this, no idea how to setup a filter to see all blueprints under a subfolder...

[steel star]

clear filter, click and enable blueprints, select the folder in content drawer's treeview, look at them all to right?

[dry monolith]

I don't follow sorry, what are you referring to? I'm wanting to do it dynamically so the logic will find any assets I add going forward without me having to modify an array...

[graceful sage]

Might need a screenshot it's not clear what you mean

[dry monolith]

All good, basically I want the system to scan for any metahumans I've downloaded in the metahumans subfolder and return an array of them all

So I can download 10 metahumans and not have to manually add references in code to the new ones I downloaded

[hasty igloo]

ok I have a actor that spawns projectiles to kill targets, when the target dies I want it to inform the actor it got a kill, how would I do that?

[dusk dagger]

I would recommend using an event dispatcher for that

[graceful sage]

Like class references? Idk if you can do that without editing engine

[dry monolith]

I was under the impression that's what the Get Blueprint Assets node is for though?

[graceful sage]

There could be idk not familiar with that node

[dry monolith]

yeah it's tricky, I haven't come across any references for it

[graceful sage]

There's a class paths but that's an input

[dry monolith]

where's that?

[graceful sage]

What type Is the get bp assets returning?

[graceful sage]

On the node

[dry monolith]

actor class

[graceful sage]

Couldn't you just set that array then?

Idk what this node does so not very helpful lol

[dry monolith]

Well the whole idea is it'll find any actors underneath the subfolder recursively and return them so I don't have to manually edit anything as I download more metahumans

[graceful sage]

So is the get bp assets not working or?

What's to the left?

[dry monolith]

yeah it's returning an empty array atm

What's interesting is if I remove the package path array, and leave that input empty, it seems to find a ton of blueprints:

[graceful sage]

Make try / instead of \

[dry monolith]

Yeah just tried, same result unfortunately

[graceful sage]

Seems to just search in engine folder maybe

[dry monolith]

Which seems really odd

Same result with a global path

[graceful sage]

Change the path to your content folder maybe

[dry monolith]

Yeah that's what I'm doing currently, still not fidning it

[graceful sage]

That's not a name tho

Probably just doesn't work that way and Probably not for this

[dry monolith]

Welll I'm plugging it into the package paths array, not the package names

Yeah you're probably right, can you think of any other ways I could get the references?

[graceful sage]

Why not just add then manually lol

Probably not without c++

[hasty igloo]

ok yeah I'm at a complete loss, idk how to do this

[dry monolith]

Was just with the intention of making the process as simple as possible

[hasty igloo]

not sure how to figure out how to let the killer of a actor know that its killed something

[dry monolith]

I'd start with the built in damage system, I think it makes that stuff pretty easy

The take damage event has info on who damaged the actor

[hasty igloo]

Right, but how does that let the killing actor know that the killed actor is killed?

[dry monolith]

Well if you trigger the kill functionality in the OnTakeDamage event you have a reference to the killing actor, so you can call whatever functionality you want at that stage with the Damage Causer reference

[hasty igloo]

kill functionality??

[dry monolith]

whatever code you're using to make your actor die. Just wire up the death system into the OnTakeDamage event and you'll have a reference to the killing actor when you want your actor to die

I.e. OnTakeDamage -> set health =health-damage -> if health <=0 -> cast to Killing Actor on Damage Causer parameter and fire KilledEnemy

[graceful sage]

Seems like this is more complicated

[dry monolith]

Kinda, but it's a project I'm wanting to share with non-ue people so it's helpful for them if there's less config

[graceful sage]

I see.

[hasty igloo]

right, but how would I get the killing actor??

I only have a pawn reference

[graceful sage]

Cast or use interface

[hasty igloo]

can't cast

[steel star]

you could also write a C++ function marked as blueprint callable

when i get this bogged down trying to do something specific in blueprints, thats what i do

[dry monolith]

Gotcha, yeah I've managed to not get into C++ so unfortunately that'll be a bit of a process for me to setup I think

[steel star]

plus you probably dont really want to reallocate an array of them all each time, just to loop through them

[dry monolith]

Someone mentioned using python though, does that sound possible/

[normal furnace]

I have a question about blueprints and components. I'm looking for a way to determine the classes of any components that are configured in a blueprint class that isn't actually spawned in the world. I can use a CDO to get most information contained in a class, but there doesn't seem to be a way of finding the classes of components. Is there any way around this?

[dry monolith]

I don't fully follow what you mean sorry?

[graceful sage]

Why

[hasty igloo]

oh my god, interface works lol idk why I didn't think of that

[steel star]

the output of that node is an array, so each time you execute it its allocating an array, but the actual returned results is the same every time, unless new assets can appear in-game

anyway thats not a big deal unless we're talking hundred of them

and it being called continuously

[dry monolith]

Gotcha, yeah it's something I'd just be calling at the start

[steel star]

I have heard python is semi-officially supported or something.

But imo dont give yourself more work by trying to do that.

When you haven't even done regular C++ before.

That is to say, if you want to ease into code beyond bps, making a single function in C++ is a good place.

[dry monolith]

Understood, yeah that makes sense

[steel star]

But really, that node looked to me like it would work

So long as meta humans have a base class of some type

[dry monolith]

Same here 😆, but it won't even find any actors under the main content folder

[dry monolith]

They're all just subclassing the actor class

[steel star]

Ah.

Maybe you can change the folder it downloads/installs metahumans to.

Give them their own location. Problem bypassed.

[dry monolith]

But I still can't work out how to get the node to find any blueprints under a specific subfolder...

[steel star]

really? specify the path in the subfolder

[dry monolith]

When I enable Incolude Only on Disk assets it finds my game assets now, but it's saying the path is under a Game folder, not the content folder:

[steel star]

does it matter? what are you about to do with them all anyway

if you have the blueprint asset, thats all you need to allocate one

[dry monolith]

Ahh never mind, think I've got it

problem was I was searching under Content/Metahumans, but searching under Game/Metahumans allowed it to find the assets only under that subfolder

[steel star]

nice

[dry monolith]

Perfect, thanks for the help 👍

[graceful sage]

Nice I might play around with this myself didn't know about this node

[hasty igloo]

ok I think one major flaw I have in my actor is that component begin overlaps are called on all clients and the server for said actor

not sure how to go about just making that run on the server only

[steel star]

?

or maybe uncheck this

[hasty igloo]

I suppose, just seems weird

[steel star]

has authority means this is the true version of the actor on the device under network control of it

[lunar sleet]

Did you read the compendium in #multiplayer yet?

[chrome crag]

Hey all! I have a fishing game, and all of my casting/reeling etc stuff is in my BP player character.. but I also want to be able to fish in the boat too..

is there anyway I can maintain possession of my player character and still drive my boat? or how would any of you approach this?

[outer quail]

Hi, I have packaged my profit and it when open it started at a login screen, once I pressed the login button the game crashed, where it should change to another level. Attached is the log file, where do I look in the log file to find the cause of the crash?

[lunar sleet]

Does a human fish while actually holding the steering wheel?

[spark steppe]

i'm sure some people do

[steel star]

sorry. wrong error

[outer quail]

thank you

[lunar sleet]

and hold a beer can in the other hand

[outer quail]

ah got it

[spark steppe]

that's how i drive the car, too

[lunar sleet]

checks out

[gilded jewel]

im trying to get the player character to auto follow another actor just before possessing. Once possessed i have it following no problems, but the same won't work from the first player for some reason, any suggestions ?

[steel star]

other than to actually debug the blueprint and add tons of print text nodes, not really

[outer quail]

I tried disabling sunposition plugin and set the package setting to shipping. It did not crash the game when the login button is pressed, but it did not change the level, I can press the login button many times and nothing happen

[steel star]

probably add print text nodes all over the bp that is handling the click

uh whats the call you are using to load the level?

if its like LoadSomeLevelByPath("Content/MyLevel") then thats probably the issue

[steel star]

so, presumably the object reference is null

but you can print to find out

[outer quail]

alright I'll try printing it

[steel star]

well, or the signed in event isnot firing

i dont actually know if you can debug bps running in a packaged/shipping build

somehow

[gilded jewel]

so i've tried this, a slightly different approach which mirrors the other version i have already working. when playing it, i can see the rotation values change, the change actor rotation says true, but the camera doesn't rotate

[outer quail]

looks like the problem is not with the login screen, my project use ue5 collaborative game mode, I tried packaging it where when open it straight away go to the main level, and once I open it, it crash immediately

[minor mortar]

Can you define vectors to only use integers, instead of floats?

[maiden wadi]

Not a normal vector, no. Not unless you more or less always round them when applying them. But there is IntPoint and IntVector

[minor mortar]

I realized that Vector 2D is just a struct, so I made my own Struct called IntegerVector2D. Haven't tested it yet, but it looks like it should do exactly what I want now.

I'm not sure if it makes any more or less sense than having a nested array of my tile data struct, but if I can just plug numbers in and get what I want, it should be fine.

[grim sand]

I had no idea these variable types existed. Neat stuff!

[maiden wadi]

IMO I would recommend just using IntPoint or IntVector. Less effort.

[minor mortar]

Yeah so far it looks the same, actually

I'm digging into the operators and seeing what happens

[minor mortar]

It's getting late, but yeah the IntPoint is literally what I was looking for. Thank you!

I'm not sure how sound the logic is, but I'm using the IntPoint as a key for a map container, with the values within being the struct of my tile data. So far, so good. Gotta build it all in next.

[grim sand]

If we use a break for each loop, and we execute the Break execution pin, does the array element output stop at the index where we hit the break execution?

[glossy cloak]

Yeah. As soon as the break triggers, the return node executes.

[glossy cloak]

Sorry. An hour later I probably should have pinged you.

[grim sand]

No worries. I realised quickly that I could just test the theory as well, and it does indeed work as you mentioned 😄

Thanks for the help 🤩

[glossy cloak]

Ha ha no problem. : )

[cyan bone]

Why is my Enemies not moving

They have the controller

and its the same skeletal mesh as my character (that moves)

there must be something obvious that im missing

[grim sand]

Do you have a nav mesh in your level?

[lunar sleet]

Visual logger helps you troubleshoot #gameplay-ai

[cyan bone]

yes. p shows floor green 🟩

[cyan bone]

never heard of it. just opened mathew wadstein to enlighten me 🍅

[lunar sleet]

Tools -> Debug , although idk where it is in UE4

[lunar sleet]

One issue that you might have based on that screenshot is you’re trying to path above the mesh

If that Z location is not on the mesh you need to either adjust the vector or increase the projection to mesh range

Also the acceptance radius is a little small

Try 50 or so

[cyan bone]

yeah i tried different Z's before

i increased now the scale of the nav mesh

still didnt work

[lunar sleet]

Not nav mesh scale

That doesn’t do anything in this case

Either way, the Visual Debugger is the best way to find out for sure, taking guesses as to what it might be is not optimal

[grim sand]

I also noticed you are executing AI move to in both the enemy grunt pawn and in the controller. Is there a particular reason for that?

[cyan bone]

no, its because both failed individually.

here we can see that they kind want to move

[grim sand]

What if you set your player character as the Target Actor? Can you check what happens then?

Also, does the On request Failed execution pin ever fire? Can you check that with a print string

[cyan bone]

thats what i did just now

they kind of try to move

they rotate a little

[cyan bone]

yes it fires

[grim sand]

Okay I am just double checking this for you now, but it essentially means that the location you have provided for it to move to, it cannot move to within the paths provided by the nav mesh.

What is NavArea_Obstacle? in your enemy grunt?

[cyan bone]

Idk. Isnt that the standard navigation?

its the same as my TopDownCharacter

my TopDownCharacter moves and is also NavArea_Obstacle

[grim sand]

Right, in that case I am really not sure what the issue is besides the fact that the location you are providing is unreachable by the controllers, which is why On Request Failed is firing.

[cyan bone]

oh i found an hint of the problem

[cyan bone]

i disabled simulate physics

and now it moves

so this is something

[grim sand]

Ah yea, physics movement and nav movement aren't compatible at the same time

[cyan bone]

ohhh

because i have an ability that throws the enemies into the air

so that ability must go?

[grim sand]

No, you just need to enable and disable simulate physics at run time when that ability is active.

[cyan bone]

Done. Thanks a lot.

[frosty heron]

Switch has authority

[dusky cobalt]

If I'm specifing here that I want this to be BP_Unit, is it like putting hard reference? If I used Actor then it would be more light?

[frosty heron]

You need to understand that every player are running their own instance of the game. And each instance have their own version/copies of the actor

Overlap code will execute when something overlap in your machine.

If u don't want client to overlap, use switch has authority

[frosty heron]

Well it wouldn't load bp unit

It is a hard ref

If u can get away using the base class do that instead

Same thing with blueprint casting

Always cast to base class when possible

[dusky cobalt]

base class, like Actor in this case, and then only if I needed I would cast to it, if not then it's more light?

[frosty heron]

It wouldn't auto load the derived class

[dusky cobalt]

got it, ok thanks

[frosty heron]

If u have bp unit there, bp unit will be loaded when Ur player state is loaded regardless if u gonna add bp unit or not to the array

[dusky cobalt]

i was wondering because I checked some references in my things and there was a lot of hard references even though I didn't use casting, must be because of how I'm sending some variables and already putting BP_Unit instead of actor for example

[frosty heron]

Blueprint cast produce hard ref (those blue pins)

[dusky cobalt]

in case if there is already BP Unit in the game from the start, does it make any difference? It's still only 1 BP_Unit that is loaded?

[frosty heron]

No difference

[dusky cobalt]

so in this particual case I shouldn't worry

[frosty heron]

If something is loaded anyway, eg your character

Then just hard ref away

U want to soft ref and load things that you plan to load later on.

Something like items , icons, etc

Like u don't need to load the entire items in the game. Just load what the player own for example

[dusky cobalt]

okay, thank you a lot

got it! 😄

[abstract pine]

if I want to call FPS_AimBP why can't I just call getFPS_AimBP directly ? Instead of relying on casting ? Don't they have some funtion like that ? Casting is everywhere in ue5 and I don't even know why the hell do I even need it for ? Is is some kind of short cut for checking data type ??

I don't even know what will cause the casting to to " failed " What is the condition for failing ?????

I can get casting from child cast to parent class, but will casting from parent class to child class work ? how does that possible ?

[frosty heron]

You can, you just have to use the right type

Casting is just a type check

Take an actor for example, that could be an item it could be my player it could be anything that is placed in the world.

So if you want to check if that actor is a player character, u will cast to player character.

If the actor is indeed a player character then you will get successfull. Fail otherwise

[maiden wadi]

You shouldn't need to cast from a parent to a child for any reason. You make events and functions in the parent to call which the child can override. Or make properties in the parent that the child can set.

[dusky cobalt]

Which would be better.

Get Player State > Cast to Player State > Event On Server
Get Player State > Interface Event > Event On Server

Considering Player State is already loaded anyway. For cleanliness in the code I like interface more, but I'm just adding 1 step too much or it's actually equall?

[frosty heron]

Eww to the interface imo

[maiden wadi]

You should exhaust every other option before ever considering an interface.

Can it be simply cast? Then cast it.
Can it be pulled from a component? Then use composition and do that.
Can it be broadcast from somewhere globally? Then put a delegate there and bind it.

If all other options fail because some condition prevents them. Such as needing the same function on both an actor and a component and not being able to use a delegate for it, then you should consider an interface.

[dusky cobalt]

In case of speed it's almost the same or casting here is faster, since it's already loaded from the game start

[maiden wadi]

Interfaces are slower. They run a lot of extra code before the function call, mostly to check that the object can even run the function.

[dusky cobalt]

One more thing. If I'm calling like this from Actor (Unit) to Player State, and the event in Player State is Run On Server, so it will actually get the Player State updated. A little multiplayer question, but if it wasn't run on the server then nothing would actually happen, right?

[abstract pine]

what is the difference between object ref and class reference ?? what does class reference do, what does it used for ?

[maiden wadi]

If it wasn't RunOnServer, then it would just do this locally where ever this code is ran. If this code is only run on the server, then nothing would change. Which it should be ran on the server, so either way you mark that function it should run the same.

[abstract pine]

how does refence to class work ? does class reference mean ref to the text file that contain the code ?

I mean ref to the content ( the text ) that made that class

[dusky cobalt]

So if I'm sending calling event from anyewhere else that is on Player State, basically everything in the Player State is already run on server? So anything that wants to communicate to Player State and calls event that is inside, it is Ran On Server? In other words? 😄

[graceful sage]

Class reference is which class to use. Object reference referencing some that exists in the world. So like take the spawn actor node you select the class and spawns an object

[dark drum]

A class references is like the set of instructions on how to build something in the world and how it should function. An object is the thing that has been created using the instructions in the class.

When you create a blueprint in the editor, you're creating the class. When you then place it in the level, you create an object of that class.

[graceful sage]

^ better worded

[mild jacinth]

question. if Get Class Defaults exists, is there a way to also set these variables that you get returned from class default?

[dark drum]

You can't set variables in the class at runtime (as far as i know), you can only set the vars in the object/actor that has been created from the class.

[maiden wadi]

Not quite. You can easily run functions on the playerstate from a client. I just meant that something that is assigning a unit to a player should already be server authoritive and not run on a client. So whatever is calling that function should already be on the server.

[mild jacinth]

so its not possible to manipulate child class's variables given that these blueprint nodes exist in the main parent class?

(its character blueprint for both of them)

i can only 'get' the variable value but not set it for the child?

[maiden wadi]

You can set them at runtime. Not in BP. That said. You should not set them at runtime even in C++.

[mild jacinth]

direct casting or other type of casting alternative is the way then

gotcha

[maiden wadi]

What are you trying to do exactly?

[mild jacinth]

I have main enemy parent class which derives from Character class. I also have enemy child class which derives from the main parent class.

the health variables exist in the main parent. I want to manipulate child health variables from the parent class

basically have a 'decrease damage' function in the parent class but it would target each child individually

[maiden wadi]

Where does GetClassDefaults come in?

[mild jacinth]

in the parent class

parent blueprint

I also did 'call parent event anydamage' on child class

[maiden wadi]

But why? They're the same object. Why do you need the defaults? You already have the variable.

[mild jacinth]

i have the variable but its not targeting the child imho

ill see

[maiden wadi]

If you have the following hierarchy.
-Parent
--Child1
--Child2

[mild jacinth]

oh okay so it doesnt need it for the variables. my mistake

[dusky cobalt]

maybe you need to click Show Variables

[maiden wadi]

Parent has CurrentHealth. Which means both children do as well. Parent sets this to 100. In Child1's BP you set this to 80. In Child2's BP you set this to 120.

Back in the parent's code. If you get the CurrentHealth on an instance of Child2, you'll see 120

[mild jacinth]

i got that inherited filter already

[maiden wadi]

Having said this all. I strongly recommend ditching inheritance for this and using a data driven approach. A data asset for each enemy type with all of it's static data is a lot more scalable and easy to maintain and balance.

[hot pulsar]

yo, so basically what I am trying to do is an opening drawer
It fully works and moves but the issue is that if I copy and paste the same drawer actor somewhere else and then try to open any drawer, all of them are getting opened instead of that single one.
Yes, I copied and pasted the same actor with the same blueprint.
Is there a way to fix it by making each actor act separately?

I am kinda new to unreal

and idk if this is the correct channel to ask that, sorry

[thin panther]

Show your code

[hot pulsar]

yep, gimmie a sec

it's basically a crosshair and when I interact with a drawer 100 units away, it's going to open

but instead of that one drawer actor opening, it opens in all of the same actors in the level

[thin panther]

You don't really want to interact by comparing object names. Instead, try using an interface. Call the interface on whatever you hit, if it implements it, then in the drawer BP, implement the interface and do your opening logic

[hot pulsar]

hm I will try to implement that if I understood correctly

and if I implement that, it's going to work individually instead of all of them at once?

alright, I will try that, thanks

[dusky cobalt]

Can someone confirm if this is correct? In case of Player State, that is already loaded in the memory from the game start, it's actually better to cast to Playerstate and set that as variable to use it everyhere in that blueprint, instead of using PlayerState and sending interface there. Same would go in all other blueprints that I will need to get any information from PlayerState.

What I'm trying to understand, if I cast to the PlayerState in 5 different blueprints, I'm not loading more, the PlayerState is loaded already, and casting is just a way for these blueprints to communicate to the existing PlayerState. Basically in communication x to 1 it's better for everything to cast to that 1 thing that is loaded anyway, in opposite to if it's 1 to x, where interface would be king.

There are 2 approaches 1 with inteface and 1 with casting. I shoudn't use interface in this case, right?

[maiden wadi]

Casting does not load anything. Casting is nothing but a pointer conversion.

Linkers load things. But this is only valid for the default instance of the class. And linkers are only related to casting in the sense that the cast node has an output of that type. The same linking happens if you have a class property, or any other function inputs or outputs that class.

Casting is a function that outputs the type. So casting causes a linker.

Linkers are only important for memory management. If the classes casting to this playerstate are always going to be used in a map where this playerstate exists, there's no point to avoid casting. In the case where they would be, you don't use an interface to solve the problem, you make a parent class or a component with the functionality you need and you cast to that parent or generically GetComponentByClass.

Kind of a moot point for a playerstate though. Playerstates don't really have much in them as far as assets. So there shouldn't be a large sizemap there anyway.

[dusky cobalt]

Ok, thank you.

[steady night]

hey how would i check or rather get the array element with the highest value :/ ?

or if two values or more are the same pick "the lowest one"

[frosty heron]

HighestNumber = 0
for (int i = 0; i < array.Num(); i++)
if array [i] > HighestNumber
HighestNumber = array[i]

[steady night]

hym

[trim matrix]

do the same in BP lol

[frosty heron]

playing whutering waves, you can translate that to bp

[steady night]

basicly right ?

[steady night]

aye just swapped them

lawl

but if all values are 0 then it will take the lowest one ofc

hmm

this formula was really taht simple

[trim matrix]

'formula' 🥲

[steady night]

aye llol

[worldly skiff]

Is it normal that Player Controller BeginPlay is getting called when a new level is opened? I thought it should be called only once.

[frosty heron]

Sure, all actors from previous level gets destroyed

[tulip yoke]

only thing that never gets destroyed and exists all the time is gameinstance

[frosty heron]

you can preserve actors if you use server travel

but for hard travel, all actors get destroyed

well not Game Instance, it is not an actor

[oak gust]

I have this floating bar above my player to indicate life, how can I add an image (the red exagone (I know my paint is awesome)) but keep the player floating bar center in relation to the bar only and not the bar and the image

[worldly skiff]

I see. Well I'm looking for a place to create widget ui objects only once (initialize them and store as variables). Player Controller seemed like a good place (the game is suppose to be multiplayer), but if BeginPlay is called every time a new level is loaded (since actors are recreated), then new widgets will create each time as well. Should I use GameInstance then?

[frosty heron]

you should read the compedium in the multiplayer channel first

[worldly skiff]

Thanks, I'll read it more thoroughly when I get to the multiplayer part. But for now I just want to create some UI logic. Specifically I don't understand where do I create widget objects and store them to a global variable so I can use them on any level.

Player Controller fits perfectly except that it's recreated when a new level is opened. Game Mode is the same. Game Instance might work, but I'm afraid it only might work correctly in single player.

[worldly skiff]

For example this Main Menu. Where would I create it?

[frosty heron]

understanding begin play in multiplayer context is important. In fact a lot of people have their multiplayer game broken because they mis used begin play

[frosty heron]

just create it in your Main Menu map?

can do it thru Game Mode

GM_MainMenu

[worldly skiff]

Ye it makes sense that BeginPlay is different than what I assume it is. I'm kinda looking for an Initialization event. I see that GameInstance have Init event so thats probably called only once on game launch.

[worldly skiff]

Game Mode is recreated as well when a new level is loaded

[frosty heron]

and how will that load your main menu UI?

[frosty heron]

Yes, that's the point

[worldly skiff]

That would work, but I want this UI to exist outside of Main Menu level as well

I'm gonna show what I have right now and what my problem is

[frosty heron]

do it where it make sense

HUD is one place

just Open the option when you press esc or w/e

[worldly skiff]

Open is not the problem, its creating Widget objects.

[frosty heron]

what's the issue

[frosty heron]

Open -> If widget not valid, create one if already valid, show it

[worldly skiff]

this is my Initialize UI function

I need it to be called only once on game launch and never again, basically on game Initialization

then I can add to viewport/remove wherever I want, just by accessing the variables

[maiden wadi]

Why would you keep widgets around that might never be used? Just release them and let them get collected.

[frosty heron]

In blueprint, you can't and like Authaer says no point

only widget I kept alive is my loading screen

and that's not possible in blueprint

[worldly skiff]

hm

[frosty heron]

What ever function you want to call (Input or Event) to summon the widget . Check if it's valid. If not create one, if already valid, add it to viewport

[worldly skiff]

you say a better aproach would be to create/destroy (or release? thats what its called in EU) widget objects specifically when I need them rather than creating them on game init and keeping in the memory forever?

[frosty heron]

yes don't overcomplicate it

you are actually making it worse on your self, not to mention you can't anyway

[worldly skiff]

Well I'm not, to my brain my approach is more logical 😄

I am new to UE tho

[frosty heron]

So what happend with the widget you point in the game instance

on Level Load, they get destroyed

so u will end up with null pointer

[maiden wadi]

If you want pooling, their containers should do that.

IMO, I don't think I'd enjoy UI handling much anymore after using CommonUI and CommonGame.

[frosty heron]

@maiden wadi I'm using Async Open Level, can I somehow retreive the precentage of the load?

[worldly skiff]

Ok with Main Menu it should be easy. I just create a widget object when I need and destroy when I don't. But what to do with lets say Character UI? Its suppose to exist permanently throughout gameplay. So if I were to open a new level, will Character UI widgets get destroyed automatically or do I need to destroy them manually before I open a new level?

[frosty heron]

they get destroyed automatically on opening another world

[worldly skiff]

I mean memory wise

[frosty heron]

so you will have to re-create them in the new world

Objects get garbage collected when there is nothing else referencing it

[worldly skiff]

C++ doesn't have garbage collector, but perhaps its built in UE level change logic?

Or so I heard it doesn't, idk maybe in new version it does 😄

[frosty heron]

GC runs periodically afaik to clean unreachable objects

every game engine have GC

[worldly skiff]

I see, thats good. I guess that allows some level of sloppy programming

[frosty heron]

not sure how

it only collects object that are unreachable afaik

so if u dereference an object and nothing else points to it

the object will get GCed and memory will be freed

[worldly skiff]

Well lets say I do this

will it leak into memory or will it be GCed?

[frosty heron]

That will do nothing at all

you create widget, then you open level. your widget get destroyed

[worldly skiff]

oh ye true

so its just a wipe, no need for GC at all

[plucky ice]

Hi all, this is a more refined follow-up to a question I had asked last week. Has anyone here ever dealt with trying to export data out of Unreal Engine to another format to be used in a data analysis program (like R, for instance)? I was able to successfully create a save game file that gets exported properly and contains all of the variables of interest I would want to analyze, but I am not sure how to proceed from here (save game variables pictured below). I have a bunch of different types of data; my goal is to get this into a .CSV, a JSON, or anything else that's not an Unreal Engine proprietary format so I can use these data later. From what I can find, it seems like JSON might be an option, and .CSV is potentially an option but is a lot more complicated. Not looking for anyone to give me a concrete solution but more so a direction to look into for how I can get these variables "out" of Unreal so I can load their values into some other program. Thank you!

[frosty heron]

GC works automatically on the background

u don't have to worry about it

[worldly skiff]

So basically when a new level is opened, all of these actors get destroyed and new ones are created?

[frosty heron]

hard travel, yes

[worldly skiff]

and so the only way to pass any data between levels (if I need to) is Game Instance?

[frosty heron]

in multiplayer, there is Server Travel

where it's possible to preserve actors

and also there is a way to copy player state afaik

not far into those yet

[worldly skiff]

I see, thanks!

[maiden wadi]

I don't know what that is?

[frosty heron]

nvm, Im too tired 😄

[wicked cairn]

Anyone know a good system or tutorial that I can use to guide me into making a tracker for the player's achievements? I'm trying to make a sticker book for the player that rewards them with items sometimes whenever they have completed a specific thing. Would I just have a event dispatcher that goes off in the gamemode whenever the player does something that relates to one of the stickers and make a function that does a check for everything each time??

[lofty rapids]

i think there is a json plugin

[stoic ledge]

no idea about any tutorial, but i image there a list of achievements (somewhere) that when a player meets the conditions says to a method add me to the list, and for that achievment the player is added.

[wicked cairn]

I wonder if this is being checked on tick or if the value changes, then it updates its progress? ig i'll have to do more research

[lofty rapids]

it would be more efficient and probably easier to just call an event when you want to check

you could also do on tick but having only run on check would be best imo

i like to update things when necessary to get rid of overhead

[stoic ledge]

that all kind of depends too, say you want to count enemies slayed, you would only want to update when you killed something and just call an event. but if you wanted to do something more time sensitive like a multikill maybe a check on tick would be better. (im not sure you would use tick for a multikill either, just trying to give an example)

[placid bloom]

Event tick isn't really good for time based stuff since the tick will be different from machine to machine

[stoic ledge]

but what is it good for? ;p

"Using tick groups and tick dependency can be vital to ensuring that your game works properly with regard to physics-dependent behaviors, or sequential gameplay behaviors that involve multiple actors or components." ~Unreal

i just googled it

[placid bloom]

Yeah the only time I've used it was for a physics grab system

[stoic ledge]

i might use it one day ;p

[somber elbow]

Hey guys. I have a bummer here. I have a platform and when character jumps on it it has to go 5 units down and then instantly go 5 units up. Just to show that the player has some weight and the platform goes down once the player lands on it.
I trying to manage it with timeline node. But for some reason the platform just once go 5 units down and never goes back. How can i fix it? Here is the line of code which goes from "begin overlap".

Here is how time the track looks like

here is a short video

the curve goes from 0 to 1 and then goes back to 0. Shouldnt the platform go 5 units lower and 5 units higher back?

[lofty rapids]

maybe cache the location in a variable instead of pulling from the location live

[somber elbow]

hmm

[somber elbow]

I thought about it, but decided it wasn't the best idea to implement a variable. I thought it could be solved simply on a timeline.

[lofty rapids]

just create a vector and get actor location, then use the vector to the lerp

most likely will solve the problem

get actor location before timeline save it to a vector use that instead

i believe because your pulling live the location a is becomming the location so zero would be a

which is where it's at

[somber elbow]

@lofty rapids this works perfectly

not sure if its super clean, but it works

[lofty rapids]

i would of used a vector and split it at the end, less wires going all across

[somber elbow]

I always forget that timeline works as event tick

[somber elbow]

Like this?

[lofty rapids]

ya something like that, but either way works

[jade junco]

Hey guys, I have an idea for a system where there would be a number of "organizations" in the game world, trying to accomplish their goals and managing property and resources etc. I think a few of these would be AI controlled, which leaves me unsure how best to implement them. If I understand correctly, actors are intended to be placed in the scene, so I am not certain that fits my case here as these organizations are more non-physical abstractions. Does anyone have any suggestions? I believe I'd want them to be able to receive events so that they can be flexible.

[somber elbow]

One more thing. I finished tutorial series you recommended me here guys. It was dedicated object-oriented programming. So in my game i have 5 types of platforms. They have very different behavior, but still those are platforms. I have 5 different blueprints for each of them. And as i understand its not good at all. Somehow I should keep it all in one blueprint?

For example this is just static platform

This one is dynamic

[lofty rapids]

i mean it's fine to have them all in there own bp

especially if they have different code, you can use one but you would probably end up with a bunch of code on that one thing

and add/removing others would just be a hassle

[somber elbow]

yep

[lofty rapids]

i would atleast have them children of a common parent

[somber elbow]

Ok, got it. Thank you so much!

[lofty rapids]

parent classes are nice if you need to loop through all the platforms you can get the parent class actors and there you go

also you can cast to the parent, which would work for any one of them

[jade junco]

from a surface level understanding, this does sound like a good use case for inheritance, since they are all platforms, they just do things slightly different

if you can pull out common fields or functionality, that would be great, but its also ideal to not try to have the parent do everything, especially if not every child would want a given functionality

[lofty rapids]

i mean even if it's just a blank actor with some variables

just having that parent can be real useful

[jade junco]

ye

[lofty rapids]

maybe a manager actor ?

that has all the events functions you need to handle it since it doesn't need to be displayed

run it on tick or some timers

[jade junco]

yea that seems to make sense

reading more in the documentation, it seems fine if it is just an actor without a physical representation

[maiden wadi]

StateGraph might help with that unless you want actual BTs

[jade junco]

is there another name for that, I cant seem to find anything in the documentation

ohh StateTree?

[maiden wadi]

Er, maybe that one. Can never remember the name.

[jade junco]

oh interesting

[maiden wadi]

It's similar to a BT in some ways, but doesn't require an AI Controller. It can be run on any actor as long as it has that component.

[jade junco]

nice, that sounds good, and I like the layout

I do like being able to control things differently than a fail up, I will have to think a bit on this for what different "states" of these organizations will look like

it might be as simple as a "generate x resource" or "prioritize growth" kind of thing

[dull kraken]

ive got a component class which is added into an actor class. any way to hide certain variables from component class in the actor class. ive got some values that are defualt at zero and wont need ajusting ever. rather "hide" it if possible

oh, im assuming the values I dont want editing ever can be set to private right?

[cerulean igloo]

Hey ya'll 🙂 Need some help with regards to Camera movement and rotation playing together. Below is a simple mechanism for Right (+1) and Left (-1) movement of the camera pawn. I also added rotation which works. Problem is that when, let's say, I rotate to 180 degrees, the right/left become inverted and move in opposite directions, how can I compensate for that? Thanks a bunch!

[lofty rapids]

you may want to set control rotation, or use the rotation of the actor instead of control rotation

i'm guessing your rotating the actor, but the control rotation is staying the same, by inverted do you mean the values actually change ? or you just go in the direction of control rotation, for instance what happens if your at a 45 and you try to move right

you may be able to use rotation in the details as well

[maiden wadi]

Also don't put these controls in the player controller. Put them in the pawn where they belong.

[lofty rapids]

i put some controls on the player controller so that i could use different characters and keep common controls, is this wrong ?

i thought it was fine to put in player controller

[maiden wadi]

What are the common controls?

[lofty rapids]

movement left/right

so they all move the same, i have not tried another character yet but i'm trying to make it easy to swap characters

[lunar sleet]

It’s not wrong to have input in the PC if it’s used for more than one thing but if they’re the same parent class might as well just inherit them

[maiden wadi]

Generally better in the pawn. Pawn's should define their movements, not the controller. General reasoning is that non mech vehicles don't strafe. People do. If they all have the same movement and you don't want to repeat it, make a simple parent class.

[jaunty solstice]

Can anyone tell me why I am unable to Cast to BP_ThirdPersonCharacter?
BP_ThirdPersonCharacter definitely exists in my project.
I can see BP_ThirdPersonGameMode but no BP_ThirdPersonCharacter when I cast.

[lofty rapids]

what are you trying to cast ?

i mean what from ?

[tired hollow]

How do you guys get realistic camera bob? Do you play around with it or do you watch tutorials?

[cerulean igloo]

But mine are camera controls. Put camera and springarm into pawn object and then Controller rotates it around, etc.

[tired hollow]

ping me if anyone replies

[maiden wadi]

Still the same idea. That's a pawn possessed by the controller with a specific set of movements. You can define the controls in the pawn too and when it's possessed, they run the same as if they were in a player controller. And then you also don't need to do GetControlledPawn

[cerulean igloo]

I was hoping I was missing something simple. Thank you very much. It worked.

[cerulean igloo]

But it's not an actual pawn right. It's a camera object. It's for an RTS-like game right. so you it makes sense Controller (BP_Controller) controls the Camera (BP_PlayerCamera)

[cerulean igloo]

reffing names from here

[timber crystal]

hello guys is there an short key in unreal to see the print string log when im play the level?

[maiden wadi]

Look at the top right of the blueprint. At it's parent class.

[lofty rapids]

i don't think so those messages are set on a timer

idk if you can log in bp might be what your after

[timber crystal]

hmm ok thanks im trying to debug...

[cerulean igloo]

But I think I understand what you mean with Get Controlled pawn

[lofty rapids]

you can check print to log in the print strings, idk where you see that but it's somewhere

[timber crystal]

is checked

I just looked but whre can i find the log than in the screen is just for seconds

[lofty rapids]

probably window, output log ?

https://forums.unrealengine.com/t/where-is-node-print-strings-print-to-log-printed/882428/2

here it shows you can filter it

[undone sequoia]

How I can get parent actor/pawn of child ? when I do get owner I get controller

[timber crystal]

ok let me check thanks CHAMP!

[undone sequoia]

from this damage causer I am getting child of actor I am using but I need get his parent so I can cast in it

[lofty rapids]

you need to cast to the parent ? for what reason ?

things should be inherited

[undone sequoia]

Because I want cast inside parent and get his team so i can compare if its team shooting or enemy shooting, i dont want do it via child as this parent have 7 children which all are different enemies then I would need cast all 7 and get their team

but when I have parent I just need cast that one

its easier

less code

[maiden wadi]

Child as in a child class?

[undone sequoia]

hm?

[maiden wadi]

I'm not following why you don't just cast DamageCauser to the parent class type to get the team?

[lofty rapids]

or it's just a regular actor

that would make sense

[olive yarrow]

Hey folks, i could use some Controls help. I'm trying to make my characters spring arm raise and lower when moving my mouse vertically, as opposed to rotating around the spring arms focus point.
Any help?
I feel like the Crane Pitch may be it but i'm not finding much in my subjective google

[rain musk]

hi guys ,I have a blueprint with a spline component,when I delect one single point and I revoke(ctrl+Z),the spline points UI will disappear into the editor, I cant find it anymore and manipulate them.The spline will be a purple colour.So how to refind the ui?

[true vortex]

I want the mouse movement for my controller to be frame rate independent but even when I have it set up like this it still doesn't work as intended

Shouldn't mouse movement not change depending on the frame rate?

If I lower the frame rate in game its a lot faster and if its higher its the opposite

[lofty rapids]

hmm, maybe try ((mouse sensitivity * axis value) * delta)

but i would think your code would work

from what i understand about it it would be different value depending on delta

[true vortex]

alright thanks ill try that out! I'll lyk if that doesnt work

[undone sequoia]

guys how I can load blueprints in editor in folder? if they are in folder in windows but not in editor :/

[crimson hornet]

@undone sequoia , blueprint in the file explorer are known as a .uasset, do you have these files types?

Next make sure that the uassets are in the content folder.

[undone sequoia]

yea I coppied uasset just in folders in windows but they are not loaded in content browser

😄

[lean loom]

Anyone know how to fix this? Im new to uneal and have no idea how to make my character change flipbook when I press left shift and when I am moving.

[lofty rapids]

you may be able to check your velocity length, you want when you hit shift do that stuff, but only if your moving ?

[crimson hornet]

You can use an method called Variable Time Step. @undone sequoia

[minor mortar]

I didn't fully get what you meant yesterday, but you were 100% right about this. I hadn't looked into Map containers yet, and after some learning this is a really really helpful tool for exactly what I'm doing.

I have my map data now tied to a key that is an IntPoint where the X is rows and Y is columns, and I have a struct that holds all of the various tile data parts I need. Looks pretty neat, has a ton of flexiblity, and is way way way easier to understand. And it's pretty much literally the multidimensional array I was looking for, if only different under the hood and with some call differences. Thanks a ton on this one!

[lean loom]

Can you explain in more detail I have no idea what you mean sorry.

[lofty rapids]

your velocity is basically how much your moving, you can get the velocity of your character, then check it's vector length is greater than zero

[crimson hornet]

@undone sequoia peak unreal engine.

[faint pasture]

why would the playercontroller be moving?

[lofty rapids]

fixed it

[true vortex]

Just tried it, for some reason it doesn't work. At higher frame rates the value is way smaller comapred to lower frame rates

Which ends up just making low fps mouse movement to be super fast

[jaunty solstice]

Thanks! No worries. Was missing some element from ThirdPerson Character map. Just reimported

[trim matrix]

hey i have my fps cam set up as a bodycam but i wanna go for more of a handheld look, and how it is rn the walk speed has to be slow for it to not look super bouncy, how would i make my fps camera animations look more like someones just holding the camera

[lusty hornet]

I started with eu5 not long ago. I wanted to make two characters, a tank and a plane, and I wanted to give them attack and defense, but when, for example, I created the life variable in a tank, everything worked until I transferred this variable to the plane, because then instead of a variable, a block with a target(self) was created. Does anyone know what to connect this target(self) with to make it work? because, for example, in C++ it would be possible to extern or import the file and these variables would be transferred, and in blueprint it would be some kind of target(self)

[lofty rapids]

show the code ? you copied something from one bp to another ?

[thin panther]

you wouldn't extern those in C++ though. You aren't importing from some library or assembly, you're accessing a member on another thing

the target is essentially specifying what to use -> on

[olive yarrow]

On another note, i'm attempting to have my field of view change slowly to mimic lag when adjusting via a slider. However i can't get it to be slow regardless of what alpha and exponent settings i use. Any help?

[molten yew]

Hey guys, I have this system that lets my player draw on a canvas. I added an extra thing to make it have a set amount that can be drawn and it replaces the oldest drawn thing, basically if the player continuously draws it would look like a snake. I achieved this by having an array and saving the different draw locations and then drawing all of them again (exluding the oldest one in the array). My issue is that this is a costly way of doing it and it's making the game lag. Anyone know of a more efficient way of achieving this effect?

[olive yarrow]

I'm a friggen noob, but can you prevent excessive overlaps to reduce some drawings - and also change the frequency juuuuust enough to help again lessen how much and how quickly that amount it being spawned?

[molten yew]

That's true and is something I thought of. Though I am hoping for a different cause when I draw it's just a circle and if it isn't frequent enough then a continuous line will start looking jittery. Will try it out though!

[jaunty solstice]

Blueprint communication is typically a choice between direct, event dispatchers and interfaces.
But is it either or are there times when it makes sense to combine more than one method?

[cyan berry]

im a newbie and cant seem to figure out how to get an interaction system working, does anyone know a good way how

[lofty rapids]

you can just use events or an interface ig

[glossy cloak]

Anybody know why I can't use breakpoints? - No clue why they don't show up by default, but after hitting F9 (hotkey to add a breakpoint to a node) they now show up in the context menu.

[glossy cloak]

Check out the Blueprint Communication tutorial to learn about interfaces, specifically. That should set you up for success.

[cyan berry]

oki

[maiden wadi]

IMO interaction is better done on a component than an interface.

[faint pasture]

And if it's a scene component, voila, you have a place to do the interaction. Like for buttons or door knobs or whatever

[glossy cloak]

For a complete beginner, interfaces can be pretty simple to grasp. Then you can experiment with components and other options. I just think an interface is a good starting point, which is why I usually recommend it.

[maiden wadi]

Interfaces complicate things. You have to implement them on everything and copy a lot of code.

[silent kite]

Super Noob here. Which discord channel would be proper for asking about updating a UI text field?? I'm trying to understand/use event dispatchers for this.

[glossy cloak]

Not much different than adding a component to everything.

[pallid nest]

hey guys I am looking at tutorial and I need "Move Component To" but can't find it in my UE5.4. Did this changed in this version or am I missing something?

[glossy cloak]

The most annoying part of interfaces is adding all the functions whenever you need something new.

But you'd still have to do the same thing with a component... You just have more freedom to run events on the component, which is nice.

¯_(ツ)_/¯

[maiden wadi]

Except the code copying. Delegates in the component and placing the interaction handling in it allows you stateful interaction. Such as holding on a lever to open a gate over three seconds, and the same component can have immediate callbacks for instant interactions. The same component can have a setting to allow one or multiple people to interact with it to make it faster or not.

And all of this can be easily housed in a single component where to use it you simply add it to an actor, implement it's delegate to handle whatnever needs done when it's interaction completes. Other components on the same actor can also even bind the interaction complete delegate for even more reusable code.

To do this on an interface. You start copying code from the very beginning because all you get for reuse is the function call and implementation. As a beginner, composition should be the first idea taught because it's the core of Unreal. Actors house Components and components house logic. Learning to not copy code is a critical skill early on to learn to abstract things correctly so that your project stays cleaner and easier to work with.

[glossy cloak]

Those are all excellent use cases for a component. I 100% agree. I've honestly never used a component for interaction like that, but it sounds like I will be going forward.

But how beginner friendly is it? Because when it's day 1 in Unreal and you just want to press E to see a door open, I feel like small wins with simple to understand logic is always the best choice.

[cyan berry]

follow up on my previous question, how would i get this blueprint with a sphere collision to check whether or not i press a key, and do something (like play a sound) when i do press it while inside of it, then remove the ability to do that again? ive tried adding a variable in my player blueprint but i dont know how to grab that variable inside this blueprint.

[maiden wadi]

Even then I'd say just cast to the actor off of the line trace or whatever. IMO, interfaces are just a bad habit to teach. In a scaling project they have a few niche actual use cases. Core classes and composition take up most of the cases where you'll need to do something with an entity. Largely because of the reusability of it. Interfaces only really work in minor parts to give some systems functionality. UMG's Listview comes to mind. You can't always know the class to be used there, and when it was conceived, UMG had no concepts of composition. So interface filled tha gap. If it was made today it could probably use the new UMG extensions.

Day 1 Unreal? Learn casting. It's crucial to know. More crucial to understand that it's not a bad thing despite a lot of criticism around it from people who don't understand how linkers work. Can't even really say day 1. Took me a month before I could vaguely grasp what it was doing. My first couple weeks were following the same set of tutorials multiple times to get used to concepts.

And more so on the note of avoiding interfaces, it's really difficult to follow. I work with UI a lot. I'm usually the person who has to expose API for UI. Which really sucks, because that also means my job requires me to follow along and understand the gameplay systems because most times I have to add that logic myself. So I not only do my job, but clean up systems after gameplay programmers. And having had to follow both interface and composition in a scaling project, I'd choose composition any day.

EG say I need to add a progress bar for interacting with an actor. To do this with an interface. I need to add a new function to the interface. I need to go through every single thing that uses this interface and manage to implement that function in every one of them to pass back the interaction time and requirement for finishing interaction. I need to care about the objects using this component because these objects needs to store the state of interaction themselves. I have to add multiple interface functions here. GetCurrentInteractPercent, GetMaxInteractTime, GetInteractUserCount, etc. Then each interactable thing has to have properties put on it. InteractionTimeRequired, MaxInteractionUsers, CurrentInteractionProgress. Could be one base class. Could be ten different classes. Could be fifty. Then after all of that work I can finally go to the widget that has to display it. Use the object passed in to call those functions.

On the other hand with composition. If someone made a component with nothing exposed. I don't need to do anything extra. They're already tracking time required, might need a percentage getter. There's already a delegate that the actors are probably using for completed/interrupted. I literally just need to look at the one component. Maybe make a couple minor function updates, and set up the widget. I don't have to care in the slightest about what is using it, because the logic is generically in the component.

And making it is just as easy. Make the line trace hit an actor. Cast to the actor and do logic there. Get your stuff working. Then when you want a second type for interaction you simple make a new component. Add a completed delegate and call it immediately on interaction started. Make the line trace find the component on the hit actor and call start interaction. Then drop the component on the actor and implement the delegate and replace the original function call. You're now using composition on that one actor. To set up a second you simply add the component to a new actor class and implement the delegate. Then you can start putting in more complex interaction logic. Hold times, or more users if you're doing singleplayer. Nothing really changes on the actors, they just run logic when it's completed. Can maybe make a new delegate that broadcasts percent changes for the hold times, etc.

[maiden wadi]

You're looking to just be near it, or be looking at it?

[cyan berry]

just be near it

[maiden wadi]

Your F key can do a sphere overlaps actors call. For each loop over them and cast to the class and call a custom event. That custom event can play the sound.

[cyan berry]

ill see if i can do that, thanks

it worked, thanks

[agile moss]

So I have platforms that spawn automatically, but it looks very boring. I want it to start as white then fade to the texture. Help?

[frosty heron]

What are you struggling with?

Look up dynamic material instance

And lerp mode for material

[agile moss]

Okey Dokie

[silent kite]

Hey I'm struggling to update a text field in my UI using an event dispatcher.. I've created the 'call' to the dispatcher within an actor (there are about 25 of them within the level). Once they get a collision, the event gets called and I want to update a count field in the UI. Within the UI widget I'm struggling to listen for it. The bind event wants a reference to the actor and I don't know how to create that. or even why I would need it. Once the collision occurs, I just want to increment a text string on the UI by 1. Who cares which specific actor was creating the event. Is there a work around I'm missing or another way to figure out how to update the text field in the UI?

[frosty heron]

You need to understand references and how to set an object ref to the instance of the world

You want to set the text according to info of some actor in the world. But which actor? You have to set the object ref to point at the instance you want.

[hot pulsar]

hey man, I started to do that but now I am stuck at the "call interface on whatever you hit..." (and to the end of the sentence).

It's just structured weirdly, sorry for misunderstanding but like I said I am new to unreal and idrk how to implement it correctly

[sinful bane]

Hi,

I'm working on a ground slam animation and need help positioning the damage area near the tip of the weapon. The weapon is its own actor, attached to the player/AI, so I can't directly get the socket location.

I thought about creating an interface to return the equipped weapon's position. Any suggestions or alternative solutions?

[dusky cobalt]

you are amazing

[dark drum]

Why can't you get the socket?

[sinful bane]

I would need a reference to the weapon mesh to get the socket, from the anim notify

[agile ridge]

Why is the socket on the weapon and not the character?

[dark drum]

How are you handling your weapons? Do you have an inventory system that's used to equip them?

[sinful bane]

The Player /AI spawns the weapon actor but they can have different weapons.

[dark drum]

How is that handled? Through an actor component?

[steel star]

#umg

[sinful bane]

No just an player actor spawning the weapon actor and attaching to the player

[agile ridge]

And the weapon actor is not attached to a socket on the character?

[dark drum]

Ok, I would first suggest you rework how that is handled. It sounds like the player and AI would end up handling the same thing differently.

As an overview, it would be beneficial having an actor component that handles equipping items (and storing a ref to the currently equipped item) that you can place on your characters. (Both player and AI) That way from the anim notify you can get the owner of the skeletal mesh then get component by class to get the 'equipment handler'. From this you can then get the current weapon being used.

[sinful bane]

The weapon is attached but i thought i cant get a socket on the weapon actor if i do not have a reference to the weapon

[agile ridge]

If the socket is on the character then it's not on the weapon actor, it's on the character's mesh and rig. So you'd need a reference to the character if you don't already have one but referencing the weapon itself shouldn't be necessary.

[dark drum]

The socket they're after is on the mesh in the weapon. 😉

[sinful bane]

Ahh okay I see what you mean here

[agile ridge]

Then why not just make a reference to the weapon then? If that's really the case, it shouldn't be any harder than referencing the character.

[sinful bane]

I was just wondering what are some ways to get the reference without assuming it was player or AI

[agile ridge]

Is the weapon actor not a parent class that can then be used to make individual unique weapons later?

[dark drum]

You could but that makes it class specific but something like getting the weapon should be more generic so it can be handled for both player and AI characters.

[agile ridge]

Alright, I'll let you two hash this out then.

[sinful bane]

Anyway thanks guys will try this out

[dark drum]

Actor components and 'Get component by class' are game changes. 🙂

[cerulean igloo]

Not sure why clicking on a unit doesn't fire an event, have this set up:

Configured trace channel and controller is using it

[gaunt monolith]

Hey everyone, i'm really struggling to make a daynight cycle and then have the day/hour/minutes show up in an in game clock, can anyone point me to the right direction? Maybe a good guide or tutorial?

appreciate more a guide/tutorial that actually explains how things work so i can learn

[frosty heron]

Blueprint communication by matthew in youtube

Or the 2 hours one by epic for more comprehensive guide

[faint pasture]

You don't need a tutorial for this, it's simple.

GameState:
Tick/Timer -> has authority? -> update CurrentTime(replicated, repnotify if you want)

Clock Widget -> bind to GameState.CurrentTime

That's the simplest

the widget will check the time every frame

the time will be updated everywhere when it's updated on the server

Of course the whole setup can get vastly more involved than this but it'll get you started

[gaunt monolith]

Thank you! I'll try these 🙏 where can i find the epic one? Youtube?

[gaunt monolith]

Yeah i'm definetly still too much of a noobie to understand everything you've described here, but i'll try anyways! Thank you🙏

[faint pasture]

The serverside gamestate updates WhatTimeItIs at some interval, either on tick or on a timer if you want it to not happen every frame

Since WhatTimeItIs is a replicated variable, everyone else can just get it and know what time it is

and do whatever they want with it

[gaunt monolith]

I assume i need to have a daynight cycle already up and working before doing this?

[frosty heron]

Are you doing multiplayer?

[gaunt monolith]

nop, singleplayer

[frosty heron]

You don't have to worry about replication then 😅

Your widget job is simply to read

You typically want to make an actor that is responsible to hold the day and night system data.

The actor will hold are the variable. Time, day, weather, etc. Your widget can then get a ref to the actor and grab the information

[faint pasture]

And that actor should be the gamestate or a component on the gamestate

since a part of the state of the game is what time it is

presumably

[gaunt monolith]

I think i understand now, thank you both 🙏

[cerulean igloo]

Any ideas guys? Tried everything. 1.5h on something simple as this.. Checked with CHat GPT too.. Global click events are working. It's just either on capsuel or on mesh are not firing.

[faint pasture]

do they block the Cursor channel?

[thin panther]

you get an actor reference as part of the hit result. Using that reference, check if it implements the interface, then call the interface on it.
If you're confussed I reccomend MathewW's video on interfaces

[cerulean igloo]

yessir.

[faint pasture]

Trace distance far enough?

how far is camera

[cerulean igloo]

That was Mesh btw. This is for capsule:

[cerulean igloo]

Okay, this may be it. haven't tried that

just reduced spring arm length. still not firing 😦

What's crazy is that I made this work in this other tutorial I've done and I redone all the steps the same way, and it's not firing. Although using Manny instead of other mesh but shouldn't matter maybe?

[faint pasture]

I'd ignore mesh for now and make it hit the capsule

maybe something is in the way and blocking it

line trace on tick along that channel and make sure it's hitting

[cerulean igloo]

Sorry,, I'm new can you elaborate pls

[faint pasture]

do some line traces or try get hit result under cursor to make sure the hit is happening

you gotta figure out if the hit isn't happening, or if the rest of the click stuff isn't happening

[cerulean igloo]

Global clicks are firing

like on left click anywhere in the env are ok

[faint pasture]

if you have the capability to line the camera up with the pawn try a line trace along the camera aim direction and make sure the capsule is blocking it

make sure the channel is Cursor

[cerulean igloo]

Is this what you mean?

[faint pasture]

whatever has your camera

just line trace from cameracomponent.location to cameracomponent.location + SomeLargeNumber x Cameracomponent.ForwardVector

[cerulean igloo]

Sorry, Do I draw a line trace on game start or on click? or draw and try to click it? or draw it over the pawn/char to see the trace is over or under it? I'm not sure I'm following

[faint pasture]

on tick

every frame

Tick -> line trace by channel with debug turned on

you'll see if it's hitting the thing or not

[gilded jewel]

I'm trying to set an alternate camera as the player cam when possesses an actor, i seem to have it working, but there is a visible glitch as it swaps using SetTargetViewwithBlend.
Is there any way to stop it defaulting to the player character cam (on possess) ?

[faint pasture]

you spawning camera at runtime?

[gilded jewel]

The player cam is standard, the additional camera I want used is spawned on an event

[faint pasture]

spawned when? show code

[gilded jewel]

theres about 30 nodes in between this and the event, but this is the spawn

[faint pasture]

is that before or after possession?

[gilded jewel]

before

[faint pasture]

multiplayer?

[gilded jewel]

its partially replicated .. but doesn't need to be. The possess is

[cerulean igloo]

thanks. Like this in camera right:

[faint pasture]

sounds like a race condition

honestly if you're doing fancy camera stuff why not just manually drive the camera around and get rid of camera components?

[cerulean igloo]

Getting loads of False printed

[lofty rapids]

your start and end are both zero ? you may need to get the cursor position ?

[lunar sleet]

might as well call that a point trace 😄

[cerulean igloo]

😄 yeha realized that as soon as shared scr.. changin now

[faint pasture]

draw debug

also you're starting and ending the trace at 0,0,0

probably not what you want

start at camera location

[cerulean igloo]

Probably not yes

[faint pasture]

end at camera location + camera forward vector * somelargenumber

[lofty rapids]

are you trying to get what your looking at ?

[cerulean igloo]

I'm trying to see why clicks on capsule are not working when global click events are fine

[gilded jewel]

i have a lot tied to the 2nd entity camera so need it, its an odd scenario i guess. I use the standard character camera up until the 2 entity is spawned, then possess that second entity but want to remain in the 1st entity camera which follows the 2nd. But, I also can swap over to the 2nd entity camera lol
Nearly all of this is working, its just the transitions between the views

[faint pasture]

I think that'd def be easiest just driving one camera component around or manually driving camera location through PlayerCameraManager

[cerulean igloo]

getting bunch of trues now but no drawings

[gilded jewel]

yea, if i didn't have so much attached to the 2nd entity cam i'd go back and do this, but its a huge amount tbh

[faint pasture]

and probably do a single line trace not multi

[lofty rapids]

i would also multiply the forward vector by a float

[faint pasture]

yeah or at least 100k in all axes either one

[cerulean igloo]

thx

[faint pasture]

that looks goofy, show current code

[cerulean igloo]

in BP_PlayerCamera:

[lofty rapids]

well for one thing you didn't plug your end in

[cerulean igloo]

ugh!

[lofty rapids]

and for two your multiplying by zero

which will be zero

[cerulean igloo]

sry. a bit tired

fixed both

[lofty rapids]

i don't know how this is supposed to help you with clicked capsule

[cerulean igloo]

I'm not sure either. I'm going where Adriel points me and hoping for the best

Trust the process

🙂

Tried everything else. The checkboxes, the collisions

none of these will print

this does though

[lofty rapids]

do you have click events enabled in your controller ?

[cerulean igloo]

yessir

also, capsule collissions are blocked on cursor as well:

[faint pasture]

I don't see any hits on the capsule

show current code

and how far is camera?

[cerulean igloo]

target arm length: 2000.0 (from springarm)

[faint pasture]

1000 is nothing

that's 10 meters

convert that pin to a float too btw

and do a single line trace

we're trying to see if the traces are hitting at all or if there's something in the way

do a 100k trace

single line trace by channel

[lofty rapids]

character ignores visibility trace, set the collision to custom and block visibility trace

or change the trace for the click events

[cerulean igloo]

That's what I did

[olive yarrow]

Eeeccck, you're right :/

Could you add a flat bottom to the circle (like mixing a box and circle) and have it face away from where you're drawing toward?

May then look odd on turns though....

[cerulean igloo]

here

[faint pasture]

turn that upper pin on the multiply into a float

right click it, convert to float

plug 100k into it

[lavish veldt]

Hello! How would it be best to keep a 10 slot inventory in a save game? Just a class array?

[faint pasture]

depends on what your items are

if all you care about is the class for an item then that can work

[lunar sleet]

just realized you can't use set timer by event on events that require an input 😅

[lofty rapids]

i think you changed the wrong one, the multiply forward vector you want to change that

[lavish veldt]

Ye, I guess that's what I'll have to do. Thank you!

[faint pasture]

or just type 100000 in all 3 coordinates

right now you're multiply your forward vector in a way that skews it

[cerulean igloo]

sorry about this

[faint pasture]

z is 10k make it 100k

[cerulean igloo]

done

[faint pasture]

and lose the green stuff

[cerulean igloo]

still error

[faint pasture]

remake that add

idk how you even did that lol

[faint pasture]

is this camera on the character BP

turn off ignore self if so

[cerulean igloo]

camera

[faint pasture]

k show the results of that

we're looking for red hit markers

[faint pasture]

i think you're hitting something instantly

click the arrow on the bottom of line trace by channel to see what the colors mean

[faint pasture]

yeah you're hitting something right in front of the camera

print hit actor

from hit result

[faint pasture]

out hit

break out hit

lots of info in it

[cerulean igloo]

It's hitting my PCG component that I have disabled for now

as in it's not showing but still gets hit

[frosty heron]

Print hit component

[cerulean igloo]

Doesn't make any sense. I have disabled the PCG generation

but obv is still placed I guess there (yellow)

I move it away, then it's another PCG (one for buildings..)

Seems like those PCG placements are the problem..?

[faint pasture]

Put your man out in the open with nothing around him

you want hits vs his capsule

[cerulean igloo]

That's exactly what I'm doing now

[faint pasture]

then check if clicking works

[cerulean igloo]

bingo

it does

PCG's blocking it

PCGs are blocking it

[faint pasture]

hell yeah

[cerulean igloo]

sigh

Thanks

[faint pasture]

so just make pcg not block it

[cerulean igloo]

That was... something 🙂

[faint pasture]

is cursor a custom channel?

[cerulean igloo]

yes

[faint pasture]

why do that instead of visibility?

is the default response block?

First off, how many things do you want to be able to click?

[cerulean igloo]

Default response is not block for visibility

[faint pasture]

like, everything? or just some things

[cerulean igloo]

everything

Chars, buildings, ok, maybe not trees

[faint pasture]

You might have better luck using Visibility since most premade assets will have sane responses to it

or you can default Cursor to ignore, then opt in to blocking it in the things you want to block it

I'm guessing the default response to cursor is Block, meaning anything that doesn't indicate otherwise (your pcg volumes, literally anything) will block it

I think typically Visibility is what's used for clicking and such

[faint pasture]

might be a lot easier

I'd just use Visibility for click stuff

unless you have some reason not to?

[cerulean igloo]

trying to recall why I did that

this is on Capsule component

with just visibility it didnt' work

[faint pasture]

btw I think you can change collision presets

so you can set Pawn to block whatever and other things to not block or whatever you want

[cerulean igloo]

Custom right

[faint pasture]

anyway, problem solved, your clicking was blocked.

no you can change what Pawn means

as a collision preset

[cerulean igloo]

Right

many ways.

[faint pasture]

so you could have Cursor default to Ignore but Pawn preset blccks it

[cerulean igloo]

I'll probably reconsider using special channel

Thanks. This was v useful and illuminating

[faint pasture]

yeah there are uses for it but I think visibility might be best. Depends on the design and other things. I think visibility is what AI uses for sensing etc

[cerulean igloo]

Spent 3.5h but Learned other adjacent stuff

[faint pasture]

thats probably why it doesnt block it

otherwise AI couldn't look past other AI pawns

[cerulean igloo]

OK, I think I had a days fill of UE

thanks Adriel, engage

[deep void]

Hey Unreal Gang!
I have a project in which i have a player controlled train moving along a track/spline.
I want it to have controllable real world speed, but have noticed all the tutorials i find are based on a timeline to move the object along the spline.
So my speed is always depended on how long the spline is, which is not what i want.

Any ideas or resources to set up realistic speed in blueprints?

[faint pasture]

Tick -> PositionAlongSpline += Speed x DeltaTime -> update position

[molten yew]

Hey can you help me with this? I have this system that lets my player draw on a canvas. I added an extra thing to make it have a set amount that can be drawn and it replaces the oldest drawn thing, basically if the player continuously draws it would look like a snake. I achieved this by having an array and saving the different draw locations and then drawing all of them again (exluding the oldest one in the array). My issue is that this is a costly way of doing it and it's making the game lag. Anyone know of a more efficient way of achieving this effect?

[faint pasture]

show the result you're after

I doubt you have to clear and then loop and draw every frame

why not just not clear then draw on top

[molten yew]

Basically I have the system so it replaces the oldest drawn thing (the water pools), making it so there is a set amount in the world at a time

[ruby egret]

Anyone ever package their game and when you play it an entire blueprint is missing? I have an actor BP for ammo boxes all throughout my level, but when I package my game thet're not there. First thing I thought was if the "is editor only" in the cooking tab of my actors details was ticked but it nor any of it's components were. I don't know if I'm setting the mesh incorrectly, or if something funky is going on with my saves/loads. The last package I did had the ammo BPs fully functional and I hadn't made any changes. Anyone experience this?

Thinking I could just be assigning a mesh that isn't getting loaded in correctly?

[tired hollow]

Can anyone help me? I made a BTTask and defined a key in the blackboard, and it's not letting me set it here