blueprint

[graceful gust]

i suspect it is interfering with the FOV variable in the save and it gets set to a very low value

ill try saving it all at once

[dark drum]

This logic shouldn't be in the level BP. If you're new to UE, I'd forget it even exists. Create a BP that is a child of actor component that has your logic inside, then you can place it on any actor you want to have the behaviour.

[graceful gust]

yup, it works now

am new to saving, does it overwrite everything when you save again?

[dark drum]

It takes all the data inside the the save game object instance, serializes it and saves it to the path specified (slot). If it already exists, it will override it.

[graceful gust]

ah okay, so i should have used a different slot

thanks

[dark drum]

That depends, do you need to keep the old data?

[autumn pulsar]

You say that but making UE5 structs was such a painful experience for me

[dark drum]

Was that creating the structs or setting up an IDE that didn't shout out you for everything you did?

[autumn pulsar]

Both really

Making it include all the pregenerated stuff

You can’t just go

struct coolstruct {}

[dark drum]

Try rider, it made me dipping my toes in easier.

[graceful gust]

Yeah. Saving them all at once makes more sense though. This is a settings menu, so I just made the "apply" button work for everything

[dark drum]

Are you not putting all the data into a single save game object?

[graceful gust]

I am

[tropic kite]

How can we tell the difference between going down a ramp in either direction?

since the slope pitch can be negative or positive depending on where you are facing

[granite prawn]

is there no version of Find for TSets?

[lethal coral]

Been following a tutorial on turn based combat and I can't seem to figure out why my character and enemy names aren't showing up. Any ideas
https://youtu.be/hz3L1k0qi5k?si=5n0mK3ubz-FUq29c

[granite prawn]

you're setting tooltip text

[dark drum]

Isn't that just the contains node?

[granite prawn]

i guess i can just use that to see if its there and its the same thing huh

[lethal coral]

Is that not the right node?

[charred berry]

Moved BP_elevator over to another project, keeps telling me on exiting play mode that staticobject wrong to be labeled 'static mesh', what would cause this error,,,the BP is a colleection of 8 or so opieces grouped and made BP

[granite prawn]

Tooltip text is what shows up when you hover over a widget with your mouse and you want to know what it does. I dont think it even works in gameplay its mostly for editor stuff and telling users how to use a widget. Like when you hover your mouse over a bluepirnt node and it tells you what it does, its the same thing for widgets

you want to use SetText

[charred berry]

this: AttachTo: '/Game/ThirdPerson/Maps/UEDPIE_0_ThirdPersonMap.ThirdPersonMap:PersistentLevel.BP_elevator_C_UAID_BC14EFA4D422284302_2146158287.StaticMeshActor_UAID_BC14EFA4D422264302_1893700946' is not static (in blueprint "BP_elevator"), cannot attach '/Game/ThirdPerson/Maps/UEDPIE_0_ThirdPersonMap.ThirdPersonMap:PersistentLevel.StaticMeshActor_UAID_BC14EFA4D422264302_1893700946_GEN_VARIABLE_StaticMeshActor_CAT_UAID_BC14EFA4D422284302_2146170289.StaticMeshComponent0' which is static to it. Aborting.

\

[lethal coral]

Ok thanks

[granite prawn]

sure thing!

also follow up is there anything like .Reserve in bp or is that cpp only?

[lethal coral]

That worked I see my character's name now but there's still no enemies on the list I'll have to comb through the video again, maybe I set something up wrong

[autumn pulsar]

Anyone have much experience making traversal movement? Specifically, I’m trying to make a ledgegrab, and I’m trying to figure out the best approach for moving the player from the ledge to on top of it. Would it be better to play an animation and then teleport the player, use motion extraction for the movement, or use code to manually move the player while climbing?

[lunar sleet]

You could try a level animation using sequencer

Pretty sure that’ll make your player end up where the animation ends

[autumn pulsar]

Well, I was on some levels going to snap to the goal

[wide condor]

could enyone get in a call with me and help with disabling inputs it would really help 🙏

[autumn pulsar]

There’s a variety of different ways depending on what you want to do.

You can either switch the input context, if you’re for example opening up a menu and don’t want the player to do anything.

You could also run a switch if you only want input in a specific movement mode or so

Then there’s a gate if you want to have events lock certain inputs

Then there’s the classic bool branch

[wide condor]

i have it like this but i can move after a go in the inspect mode

[autumn pulsar]

What is “Character?”

[wide condor]

its the player blueprint

[high gale]

I need some help understanding interfaces. The sole purpose of this interface to simply just to send the boolean variable to another blueprint in my project, but I am getting an error on this target that it needs because I don't know what the engine is asking for?

[autumn pulsar]

Where is this logic running?

[autumn pulsar]

Why are you sending it to yourself?

[high gale]

I want to send it to an AI controller to do code there

but I am still a bit iffy on how to use interfaces correctly

[autumn pulsar]

Interfaces are typically only used to communicate between different objects that implement logic differently

Like if I use a door, I get a different interaction than using a switch

If you’re talking between yourself, you can usually just grab the info

Like you can just run get controller, see if it’s an AI controller and do stuff from there

[high gale]

My use case for this was to to know if the player is crouching and then do some distance comparing with the AI perception to see if it should detect the player or not

[autumn pulsar]

If you don’t plan to have multiple player blueprints, you could use a cast in the AI logic to cast to player, add a reference to the player and then directly access functions like “getcrouch” on the player

[grave relic]

Seeking some help with data handling. So I’m making a creature collecting game, think Pokémon. And currently I have the units(pokemons) as structs. I get data from a species list that I get all the models, animations etc. But the actual core of the unit. It’s generated stats, current health, experience etc is stored in a unit_info struct. What I’m looking for some help with is this. Now that I have a unit I don’t really know the best way to go about handling the data of the unit info. If I would let’s say move the position in the team, swap the active unit, save the current health for the next battle. Is there a a best practice for storing structs? Or is it better to make data assets instead. And every time a unit is created it’s stored in a data asset that I can then move around? I’ve never used data assets before so I don’t know how easy they are for this.

[dusky cobalt]

Sounds like you need actors which you can reference, move and have pokemons in a materialised way.

[pulsar osprey]

pokemon is much like a fancy inventory system

[autumn pulsar]

If you want to do this logic via interface, usually it’s better to make functions that “leech” variables rather than push them to things. So in your interface you’d add a function called “get crouch” and it would return a boolean. Then in the player, click class settings, then interfaces hit add interface, and add the interface. Then in the functions list there will be your interface functions. Right click and click “implement function” then have it return your crouch state

Then in the AI, pass them a reference to the player, check if they have your interface, then run the get crouch function and use that in your logic

[grave relic]

Yeah I was thinking that, but it seems like that’s the easy way, and I would if possible want it to be more data driven. So I have a base unit, a player unit and an enemy unit. Then I just adjust the actors based on the unit info

[autumn pulsar]

You’d probably save a struct in a data asset for saving and loading

Then reconstruct the monster from the data when you load

[granite nacelle]

Could someone tell me a blueprint node I could use to disable pawn sensing when my enemy dies

[grave relic]

Yeah exactly, but some people make inventories with data assets, and I don’t know if that’s better since I’ve not used them :/ cause now adjusting stuff with struts is a pain. If I just want to change 1 stat, the I have to do a get, and set all values while adjusting the thing I changed.

[autumn pulsar]

Might be easier to use an actor component as a bridge

[grave relic]

Yeah that was my thought, but felt like I needed some confirmation. But let’s say I have an array as my “party” is it easy to move around data assets in the “inventory”?

[autumn pulsar]

With helper functions to adjust stats

[grave relic]

An actor component? In what way you thinking?

[dusky cobalt]

You can asign structs and data assets on actors as a base, and then inside actors operate on the variables. You can either just take data from data asset and create new variable which you will use later or continue on structs but just using functions which you will need to write 1 time and not for each.

[autumn pulsar]

You have your data asset which contains the raw numbers, the actor component that manages it, then the actor that has the model

[pulsar osprey]

ive personally found inventory systems work best when you store item data in a UOBJECT that can either be stored in an inventory slot or in the world in a physical item. I'd imagine this would work identically for a pokemon system

[grave relic]

That’s somewhat of how I’m doing it right now. But just with strict

[pulsar osprey]

i have no idea how exposed to BP pure uobjects are

[grave relic]

Can I when creating a unit create a data asset populated with the data?

[hardy merlin]

How do I change a log category's verbosity in the editor?

[dusky cobalt]

so jsut will add that Data Assets are always starters, you never modify Data Asset ''live'', if you do it in 1 place it will be modified ''forever'', means after you finish game you might end with completly different numbers, as well as all your objects will start taking that updated data. So Data Assets are just startng Data that you want to hold in 1 place for object, usually they are usefull as programmers make them for balancing team so balancing team just has 1 file where they can modify numbers fast and test things for example

[grave relic]

So just having the actors in the world, storing the data to then access? So when I add a unit to the party. I spawn in a uobject, populate it’s variables. Then I reference it in some way when I need it. So if I have UOBJ_unit_1 and UOBJ_unit_2. Then I can just call on the specific uobject refernces. Perhaps stor them in an array that I restructure when moving them around in my ”inventory”?

[dusky cobalt]

yes, you are thinking correctly

[grave relic]

Ah, so data assets are only for reading nor writing?

[dusky cobalt]

mostly, yes

i mean not mostly, I think you never write on them, as I said, if you modify health from 100 to 70 on data assets it will be 70 at the end of the game, so you go in next level and sudenly all your units that use this data asset have health 70

[hardy merlin]

You might consider using base Uobject instead of DataAsset if you want to instantiate the data and make modifications.

[grave relic]

Okey makes sense, I think I have a direction I want to go. Perhaps clean up with the data assets for structure. But then have each Pokémon as a UOBJ reference in the world. That I then can call and say “your active”/“your inactive”

[dusky cobalt]

that's what you have structs for, so you use Data Asset to Initialize the structs ON THE OBJECT

[grave relic]

Feels like a reasonable direction

[dusky cobalt]

I would still use Data Asset...

[hardy merlin]

UObjects are also good if you want a hierarchy and functions.

[pulsar osprey]

when you spawn the actor, give them the UOBJECT to own. when you store the actor away, rip the UOBJECT from the actor and give it to your inventory to own.

[dusky cobalt]

Create Actor with abstract logic that takes all the data/structs/variables from the Data Asset and initialize them on the object/actor.

[pulsar osprey]

data assets are good for static data and can still be used for a lot of things in an inventory, but any mutable data has to be stored elsewhere

[dusky cobalt]

then you can have Data Asset DA_Pokemon1 DA_Pokemon2 DA_Pokemon3

youc reate BP_Pokemon and just assign different data assets, boom you have 3 different pokemons, and if you need to change stats of Pokemon_3 because it's overpowered, you go to Data Asset and swap his stats

[pulsar osprey]

like hp, moves known, XP, breeding history or something

[grave relic]

So the actor takes the data from the uobj(which acts like storage) reads it and gives visuals. The changing a Pokémon is just change what uobj the actor reads the data from?

[dusky cobalt]

and you can operate on each BP_Pokemon instance you spawned

[pulsar osprey]

potentially, yeah. the UOBJECT could also reference a data asset for things that never change like appearance

[grave relic]

Makes sense, currently have this in a data table, but might use DA instead

[frosty heron]

💪

[grave relic]

Yeah, but the actual visuals are through the actor but read from the uobject? If I understood you

[pulsar osprey]

if desired

[dark drum]

I may have spent a few hours fiddling away in c++ when I could have just exposed and overridden the functions in BP. 😅

Been playing with custom user asset data. I'm surprised you can't make a child of it without C++.

[pulsar osprey]

you could also bake it into the actor subclass itself which might be easier when you have to deal with animations and other things

[dark drum]

I've done an inventory tutorial using uobjects. Might be worth checking out.

[grave relic]

Makes sense, I currently have a unit_species struct that has all references for mesh, animation, name etc. That could be on the actor. And the unit_info that has all the mutable stats in the uobj.

[frosty heron]

Unlock the power of the other side

[grave relic]

Oh that would be awesome, could you share it? ^^

[dark drum]

https://www.youtube.com/playlist?list=PLcwVLBaUNnHoujbPwOAdMgNtq1ShoHIGc

[grave relic]

Thank you! ❤️

[dark drum]

Of course it's one of many ways but it's the general concept I prefer.

[grave relic]

It’s good to get a grasp on it since I have not worked with UOBJECTS in this way before

[dark drum]

If you want to get a feel for uobjects, check out my stop repeating yourself series as well. Whilst you probably won't use what specifically in it, it might give you some ideas on how you can use uObjects to help build better systems. 🙂

[grave relic]

Will do, thank you for pointing it out!

[dark drum]

Yea, still just my little toe but I should probably learn good file/folder structure and namespace stuff as I keep seeing it pop up. Lol.

[frosty heron]

Honestly I just know the basic stuff like ()-> or .

That's pretty much 60% of cpp

Don't need to go deep with other concepts to start using cpp

[pulsar osprey]

most cpp in ue5 is just using it as a glorified scripting language unless you want to really design something

[frosty heron]

I don't know what cpp ppl talk about 90% of the time

[thin panther]

I can have a guess

it's probably cpp

[dark drum]

The stuff I really want to do is beyond me though. I had a skim of some of the editor UI stuff for making custom editor modes. 🤯

[frosty heron]

I made some out of necessities. The trick here is to just copy and paste

There are already videos by epic outlining what you can use

[thin panther]

editor UI is in a really weird dichotomy where it's either the simplest, albeit unintuitive thing in the world, or more complex than sending someone into the sun and getting them back alive

[frosty heron]

A very nice tool you can attempt to copy is common maps from lyra

Also check out extending editor by epic

You can do validation and automate script for your assets

It saves my life as I have to make changes to hundreds of materials

[dark drum]

Yea the editor utility widget stuff is nice. Definitely simplifies some things.

[frosty heron]

Instead doing it manually, just one click with scripted action and boom.

I mean honestly I wouldn't be able to figure it either

But some people already done it

I'm almost useless without example

Sometime you just gotta dive in

[tropic token]

guys, why there's no inputs on event dispatcher :/

[lethal coral]

Been stuck on this for over an hour and I can't figure out what I'm doing wrong, the enemies won't show up on the target list.

https://youtu.be/hz3L1k0qi5k?si=5n0mK3ubz-FUq29c

[dark drum]

Press the + to add one.

[tropic token]

I mean I have one selected, but I can't add input variable. I want to make a parameter for event dispatcher

[dark drum]

In the details panel click the + button under the inputs section.

[tropic token]

do you see it on screenshot? event dispatcher is selected

oh shit

it's on top, wtf

omg..

[simple bluff]

hello, im new to unreal engine but im already familiar with c++, does anyone know a good tutorial or documentation where i should start from to figure out how to make a c++ function that can appear in a blueprint? i already have visual studio connected with unreal, i just need to figure out how to make a function to use it in blueprint

[queen vault]

So I want to do movement like in classic 2D sonic games. How would I implement that?

[thin panther]

This is more relevant to the #cpp channel. If there's any overlap, stick it there.

Assuming you're already inside an actor class, or if you want a static function, a blueprint function library, you just make your function as you need it, and stick a UFUNCTION(BlueprintCallable) above it.

The full list of specifiers is here: https://benui.ca/unreal/ufunction/

I advise getting to know the gameplay framework in BP before using C++, and having a dig around the templates and engine code can tell you a lot too.

[solemn shale]

is this node correct node to remove widget from player screen? do i need to add anything

performance wise

[fiery anvil]

anyone know why the scale on the niagara node wont change anything? the particle is too big for the footsteps and the scale wont change no matter the numbers. thanks

[dark drum]

Yes but it'll only be destroyed if it's no longer referenced. This is so you can readd it at a later time if needed. If you've finished with a widget and want it to be destroyed make sure you clear any references as well.

[snow halo]

by the way I just tried that too

here im gonna try to get anything that is parented under this image object

But image actually is the target

target = panel widget obj ref

Only show item quantity, if stackable. >1

[warped juniper]

Hi there. How can I prepare a blueprint custom class to be referenced in C++...?

I think there's a setting for that, but can't quite find it

[pulsar osprey]

usually best avoided. why are you doing it?

[dark drum]

I don't believe you can.

[dusky cobalt]

you can Get All Children of the panel/wrapbox btw

[dusky cobalt]

You can't. You would need to when you are starting create c++ version of your class, and then create b p, so then you can reference the parent in the c++

[snow halo]

which panel?

which wrapbox?

[warped juniper]

Trying to convert a BP function to C++ because For Each Loop

[snow halo]

panel aka canvas panel?

[pulsar osprey]

you would have to convert the entire class to c++, or move that BP function somewhere else (like a BP function library made in c++)

[dusky cobalt]

no, if all images are in the same panel, under one canvas panel for example

[pulsar osprey]

i doubt the performance impact is meaningful enough to warrant moving

arrays in bp feel gross and they are slower than c++, but unless you make your game and determine its slow enough to matter, dont worry performance

[warped juniper]

The issue is that it's accesing a variable in the custom class

[pulsar osprey]

then you would have to make the entire class in c++

[snow halo]

the problem is

I already have those buttons

but to make it more programmatic i wanted to get specific children

associated with the image

children is

number of the image

aka "how much of that image do you have"? (..in your inventory)

[muted halo]

Hi everyone Im back with another question regarding a detecting feature in my ue project. I have this current setup where if my drone is within 500 units AND has a visible line of sight to print out a success message. I now want to take it a step further where I want to print out the location of the object detected. I made an array on the left with two objects and my problem is where if either gets detected it will print out the location of both objects. What can I do to only return the "detected" object. thanks!

[gentle urchin]

Make sure you have it after the second branch 🙂

Since thats the second check you do

[dusky cobalt]

the only thing i would probably change is to use multisphere trace by channel

[hollow pond]

quick q, is there a fast and low-cost way to read a single pixel from the screen? ideally without a render target, since "incredibly slow and inefficient operation" is quite off-putting lol

I do have a render target that is written to by some niagara gbuffer stuff for other things in my project, maybe I could hijack that

[tropic kite]

Hey guys - how can I get the 2d input vector?

[tropic kite]

oh hmm this is the player movement?

specifically just want to check if I'm moving left or right

[loud tree]

Oh that's just as easy. How do you handle movement input?

[tropic kite]

advanced input!

here's my movement

[loud tree]

Fantastic! Here is how I personally do it. The set direction function is for my dodge, but the main thing you need to know is that going left/right will be a value of 1 or -1 on the x axis value. you can just run it at the input itself like most people if you want, but If you don't already know and want to know That green ia move is just a right click, searching the input for movement and pulling the function of it instead of the input. (it will come up twice)

[tropic kite]

whooooa sick!

thank you so much

trying to setup slopes and could not for the life of me figure out how to get this info lol

also how did you organize your lines like this??

[old cypress]

Hey everyone! Is that true that I can't use macros from a blueprint library in the same class fow which I defined the library, and only in its' children?

[autumn pulsar]

Is there a way to get rigid root motion extraction? I'm having issues where root motion is launching the player with the CMC instead of moving exactly where the root motion tells them to go

[loud tree]

#animation

might have better luck in there

[deep lagoon]

So I have an actor I want any other actor in the game to beable to access and reference

how do i best ensure that it loads / is initialized before other begin play calls

have an issues where its spawning after components but before the level blueprint so its creating a weird race conditions
right now its being created in the begin play of the game mode class

[eternal cradle]

its Electric Nodes plugin :)

[eternal cradle]

if u are using c++ look into subsystems for a singleton approach

or u can just initialize after a small timer. not really a big fan of this approach tho. perhaps something event drived would be more viable

[nova grotto]

is it possible to set a constraint to prevent an actor from moving past a certain radius

[solemn shale]

you can use invisible wall, or collision box

[surreal peak]

You can code one fwiw

[frosty heron]

Exi do you know if there is something built in for the A.I to slow down when it's closing to its destination? Maybe something to do with breaking?

[surreal peak]

Every time the actor moves, check if the move is moving away from the center point, and if so, check if it's resulting in a larger distance to the point than the allowed radius. If so, don't allow the move.

[surreal peak]

Not really an AI person. Sorry.

Path following component might show you something

[maiden wadi]

I don't think there's anything built in, you'd probably want like a service in your movement BT chain that periodically checks distanace to target and changes the aI's movement from sprint to walking.

[fiery swallow]

there is, AImoveto utilizes it in the movement component

@maiden wadi tagging you aswell just so you know

[maiden wadi]

What is it? I don't remember the AIMoveTo node having anything like that?

[primal hare]

1. A player is running, he might stop at any position.
2. How can I make the camera in the Sequencer to zoom in on the player's position? whereever that might be

Basically how to calculate the location of the Camera in the Sequencer based on Player's Location

[nova grotto]

What node would that be or is it literally just called a dont move node

[wind atlas]

hey everyone i have this really weird problem. I want to test if my begin overlap is working and see the flow of execeution. I did select which actor to debug. The Overlapping work but the line of execution is not glowing/pulsing orange.

[fiery swallow]

it's in the AIModule, the movement component has some booleans to use acceleration and braking

I'll find them soon as my game of marvel rivals is over and post them

For Acceleration and Deceleration to work with AIMoveTo look into changing:

• Max Acceleration float (make it way lower then the default)
• Braking Deceleration Walking float (make it way lower then the default)
• Requested Move Use Acceleration boolean (true)
• Use Acceleration for Paths boolean (true)

One of those acceleration booleans also applies the deceleration, but I don't really remember which one

also AIMoveto will only start decelerating when it's approaching the last point of it's path

[surreal peak]

Depends on how you are moving it

[maiden wadi]

Ah, that's neat. I'll have to mess with that later. 😄 Thanks for pointing that out.

[surreal peak]

Hm, then you might really not debug the corret actor.

If you don't select any in the dropdown and you just breakpoint the node, it should breakpoint for the first one that hits it

[wind atlas]

i for sure pause the game and debug the "selected one"

but the problem i am really tring to fix is

[surreal peak]

I believe you that you are trying to do that and I give you the benefit of the doubt that it's an engine bug and you do it properly, but chances are still there that you selected the wrong one. Especially if there is more than one

See if it breakpoints if you select none

Then will also automaticlaly select the right one in the dropdown

Maybe that gives you a hint

[wind atlas]

ok i will test that out

but i have a quick question

[surreal peak]

Sure

[wind atlas]

did you ever have a problem where only instance0 and instance1 (of the same actor) wasn't being able to pick up but the rest of the instance (n > 1) are. What evne weirder is that if i pick up instance 0 first, instance1 pickup won't work, and if it picked up instance1 first, then instance0 won't work

to clarify my question here is an image

sorry if my question is kind of confusing and thank you!

[surreal peak]

Your whole problem is resolved?

[wind atlas]

ooh no

i mean i edited my quesiton

[surreal peak]

The Image doesn't really help me understand your issue.
Usually, when a question like yours comes up, it means you are doing something wrong.

Can you please clarify a few things:

• What do you mean with "pick up"?
• Can you please show the code involved to do your "pick up" logic.
• What do you mean with "won't work"?

[wind atlas]

1. "pickup" = begin overlap
2. I attached the image of the code involved "pick up" logic
3. "Wont work" = the the begin overlap is not working

I tried to see the code execution flow but it is not pulsing orange which bring back to the quesiton i had before this (but i will make sure to use the breakpoint you mentioned. Really hope it not a engine bug)

edited: I resolved the problem, got something to deal with stuff outside of the BP_Spawn. thank you!

[ruby ivy]

Hello, is there a way to add each letter of a string into an array?

[dark drum]

I believe you can parse a string into an array where each character will be a seperate element in the array.

[ruby ivy]

How can I do that?

[dark drum]

You have two options depending on what you're wanting.

[ruby ivy]

ok thank you

[dark drum]

Does anyone know if there's a way to separate out the conscription script so there's an event that runs when dragged and then another when released? (As in drag finished)

[dusky cobalt]

You could Add boolean I think

Before rest of code runs

[dark drum]

Im not sure how that would help.

[surreal peak]

In C++ there probably is

[dusky cobalt]

You can Toogle the boolean in intence editable. Set false as you are dropping and then after you dropped something set to true. Or just use valid node.

Actually valid might not work this way but boolean should let you control it

[dark drum]

Yea, I'm poking around the actor class at the moment to see how it currently works. I know there's a bool for making it call when the drag has finished instead but I want both haha. (seperate stuff)

[dark drum]

So the answer to my question is no for a BP only solution. (Would be nice if there was an 'OnEditorDrag' option.

As for a C++ ermmm... Well it's handled across multiple classes, Actor, ActorConstruction, ActorEditor and SimpleConstructionScript so its above my knowledge. 😅

[surreal peak]

The call is usually OnConstruction

At least as a replacement for the script itself

[smoky socket]

I have an actor blueprint and I want to add static mesh components just in editor (not runtime), the meshes are there when I spawn them but the components are not showing up in the actors components list, also when I move the actor all of these static meshes are disappearing.

[languid furnace]

My character doesnt spawn on Player Start when i server travel any idea why?

[dusky cobalt]

Try in Standalone Mode

[languid furnace]

I'm already trying it on standalone

this is the code

[dusky cobalt]

You need to do Server Travel command on Gamemode, and all game modes need to set Seamless Travel

[surreal peak]

How does one get rid of "Editor Only References"?

It's a Hard Reference that is marked as "Editor Only", but there is nothing in BP_A that references BP_B anymore.

[dark drum]

Restarting the editor?

[surreal peak]

That doesn't help

[dark drum]

How do you know it's referenced? Via the reference viewer?

[surreal peak]

Yes

And the SizeMap fwiw

But it's an EditorOnly reference based on the viewer and the data I can see if I breakpoint the list it generates

It just doesn't tell me where that comes from

[dark drum]

Could it be a ref set by BP_A that is placed in the level? I had this once and it took me far too long to find.

[surreal peak]

I will have a look, but I create the sizemap from the asset itself

[dark drum]

You could try just doing a find and type the name of the class in. It should show you where it is, even if it's selected in something like a spawn actor of class node.

Another thing it could be is an unused local var in a function.

[surreal peak]

That would cause a normal HardReference though or not?

[quasi wigeon]

Hi, I’m currently working on implementing an item pickup system, and I’ve come to a point where I think I know a possible solution, but I’d like to hear about the best way to approach this. The issue is that each item has a different holding position. For example, a knife has the holding point on one side, while another item might have it in the center. How should I handle this? My idea was to create a “database” of items where I store information like the holding location, rotation, and so on. Does this sound like a good approach?

[drowsy rivet]

I did not understand how to do that one clearly, andI found that there is a set aiming rotation and I need to get this node as a node. When I click on add event set aiming rotation, it transfers me into that tab without adding the node

[jade inlet]

Would someone here please explain to me how to get/set a variable from one BP on another BP?
Additionally I would like to know if there are multiple ways to do that and if so, what are the pros and cons of each solution?
Thanks in advance!

[icy jacinth]

Is there a way to automatically add all child classes to an array class reference?

I'm trying to create a random weapon spawner that randomly spawns a child BP of my master weapon BP. I've tried using "Get all actors of class" in the construction script, but that only gets the actors that are already in the level. I'd like the array to automatically include all the child BPs, even if they're not spawned in. I'm hoping not to have to add every weapon manually as array elements.

[faint pasture]

asset manager probably

[tame swan]

This is my first game. I created a checkpoint system . It actually worked The problem its 2D game when the character respawn at checkpoint . The Y axis is always changing (sometime on 10 sometime -50 ). that causes problems, such as the character falling off the platform . as 2D game i want it always Y=0 when character respawn at checkpoint. So any solution !!? (its my First game)

[covert mortar]

Hi there. I need help. I'm making a fighting game. I want to rely on physics collision between my character and the enemy instead of capsule collision, so that it's more accurate (or at least so that the character doesn't take damage when hit in the air because capsule collisions are bigger than the character itself), but when I try to set the character collision, it ignores the enemy collision. I've already set the physics asset for the character blueprint skeletal meshes, to no avail as they keep ignoring collisions.

[dark drum]

Break the actors location and then make a new vector and connect just the X and Z.

[dusky cobalt]

What do you guys use when you want to make ''loading'' screen? Do you just program to show it on the viewport until at the end something takes this down from viewport or there is better way?

[dark drum]

You need set the skeletal mesh component collision channels as well. Adding to that, have the collision setup in the physics asset.

[dark drum]

I can't say I've ever worked on a game that's been big enough to require a loading screen. However, just from BP, there's not much you can do in terms of a loading screen but I tend to just display a widget.

[covert mortar]

skeletal mesh is blocking all (for testing purposes) and yet the player and the enemy ignore their collisions and pass through each other

I can use the collision of the capsule, but I want to use the collision of the skeletal mesh, for more accuracy

[dark drum]

Ahh I see, the Character movement component uses the capsule and there isn't anyway to change that.

[covert mortar]

So it is not possible to take advantage of the collisions of the skeletal mesh physics?

[faint pasture]

do you want the high-accuracy collision for movement or just for hit registration?

they pass through each other because there's nothing making them NOT able. You have kinematic movement and kinematic animations

you tell a thing to be in a position, and it's there.

[covert mortar]

Even on hit it doesn't seem to recognize it, I added some on hit events and nothing happens...

[faint pasture]

show collision settings

[dark drum]

Have you enabled the skeletal meshes to generate hit events? It's off by default.

[maiden wadi]

I use CommonLoadingScreen plugin out of Lyra. It handles all common cases. And you can push tasks to keep it held up whenever you need for like initializing gameplay on a map.

Some people use the "Async LoadingScreen" plugin. But I won't touch it. It uses the Movieplayer, which we had sooooo many random crashes through in Red Solstice 2. We took it out and swapped to the Lyra one there as well.

[dark drum]

Oh yea, i forget CommonUI added one. How does it work?

[maiden wadi]

The TLDR is that it has a GameInstanceSubsystem that ticks. It checks some basic stuff like if you're in a level transition and if you have a valid controller, etc etc. Past that it'll ask GameState if it has any reason to keep a loading screen up, and after that it'll check the custom tasks you've pushed.

If you can get the plugin it's 100% BP usable as well. You specify a userwidget in the project settings, and use the create task nodes that return a uobject for you to remove when you're done with them.

[narrow swift]

Does anyone know how do i snap an object to my mouse in blueprints is there a way?
Like this example in 3:29'th minute
https://youtu.be/hJq_7F1CbOc

[dusky cobalt]

That sounds good. Thanks for pointing!

[shadow socket]

Hey everyone, I’m using Game Analytics, but it’s not connecting to the web dashboard for debugging info. I’ve already signed up and connected the project properly. Additionally, some of the Game Analytics links are giving me 520 errors. Has anyone encountered this before?

[next hollow]

Its probably not "snapped"
They just disable aiming, and convert the aiming input into location changing.

and, if it is "snapped"
Then, you can just line trace the mouse to world, and then put the knife like 10 units above it, or etc.

[final heath]

Still havent found a solution to this issue :/

[trim matrix]

hi im trying to make a 3d platformer collectathon. and i rly like how the camera is setup in bowsers fury. but im not sure where to start with making my player camera work like it. https://youtube.com/clip/UgkxJEMn1pMa0tK-TjtRH6YcMvTAZ9XyhlgF

[knotty osprey]

hey guys I'm running into a problem and i cant for the life of me figure out a solution, pretty much this is the main blueprint and whenever the player clicks this action gets performed and works fine once however if used more then once the timer gets reset and only one instance will get removed. Is there a way i can run this timer multiple times without it getting reset so then all the instances can have set durations?

[warped juniper]

I have made a game like this before.
You have 2 options, either make a camera component on a player actor attached to a Spring Arm component with some lag to smooth the movement, or for a more complex method you can make a separate camera actor that follows the player around in specific ways

The separate actor method is useful if you don't want the camera to ascend / descend when the player jumps, and it's the go to method in essentially all 2.5D platforming games

[inland walrus]

Is it okay to have player health update on tick?

[lunar sleet]

Depends. Tick is not that expensive normally, but if you're doing this in a widget, you'll be doing constant draw calls, so you can make it tick bound but only when the health has changed, unbinding it shortly after

[knotty osprey]

there are also no ease in effects there so you could just call that event whenever its needed rather then all of the time

[marble tusk]

Try doing the clear and invalidate before removing it from the array. The way you have it setup there it's removing index 0 from the point info array, then afterwards grabbing the new index 0 and clearing and invalidating that new one.

If I understand how that's setup properly

[olive yarrow]

Should i use GetWorldDeltaSeconds or some other method here foR Characters continuous movement forward? The player moves HELLA SLOWER in the built package than it did in engine

[knotty osprey]

god yeah that slipped my mind lmao thank you, the main problem is still active tho as the timer gets reset every time the function is called

[marble tusk]

The actual solution might be more involved than just what I said, but I need to sleep, so maybe someone else can help

[knotty osprey]

definitely still thank you either way 🙏

[jovial steeple]

This makes no sense. Delta seconds is the time it took to render the last frame of your game. It’s usually some very small number like .005. Scale value is generally expecting a number between 0-1 which dictates the “intensity” of the movement force. 0 is 0% movement force, 1 is 100% movement force. If you want a constant force, just directly type 1 in the scale value.

[mystic blade]

mouse input inverted. left and right are fine but down looks up and up looks down

also movement is fucked. cant go forwards or backwards

[olive yarrow]

Bless, ithanks Memories!

[jovial steeple]

Also, world direction x y and z arnt used for speed.

That is a vector representing the direction of the movement.

(1,0,0) is what you want

That is a vector pointing directly in the x direction

[olive yarrow]

ah mate, my whole movement system is fucked then

[mystic blade]

I FIGURED OUT THE ISSUE. my dumbass put right vector instead of forward vector for movement. but camera movement is still goofy

[jovial steeple]

You generally change the speed setting on the character movement component. There is a variable on it called MaxWalkSpeed

[olive yarrow]

I definitely went and made it overcomplicated.. honestly, probably a good time to go and look at all earlier systems since ive learned since then... yaaaaay devving

[mystic blade]

fixed mouse movement

u dont get to help me anymore

for i have solved every game development issue

[covert mortar]

mmm, maybe not. I'll try it after work. Thanks a lot for the response

[inland walrus]

Thanks, so just to clarify, it is okay to use UI updates on tick? with regards to expensiveness

[inland walrus]

Thanks, so just to clarify, it is okay to use UI updates on tick? with regards to expensiveness

Sorry to send it twice

[dusky cobalt]

not really

[knotty osprey]

you can but if you can avoid it do it, future you will thank you

[dusky cobalt]

So mostly with UI updates, they happen when something happens, they don't happen out of blue. So you want to update only on changes. Sometimes in game you may have 20minutes without this variable changing because you use bullet, spend money or you didnt get resource. Why would we be pinging it 20minutes every frame if it's not needed.

[inland walrus]

Got you, I will try to optimize it
but in terms of expense, how expensive is it to performance just for a health bar to update?

[lunar sleet]

Only way for you to tell for sure is by profiling it

[faint pasture]

not

if you had 100 of them sure

[lunar sleet]

Well draw calls can get expensive fast

[faint pasture]

i mean whats 1 draw call

[gentle urchin]

Rule of thumb is to update when needed

[faint pasture]

if its meant to smoothly update per frame, something is ticking somewhere

[gentle urchin]

Exceptions and good reasons exists

[lunar sleet]

Yeah, not scalable at all but depends on the context for sure

This is not to say tick = bad

[gentle urchin]

Not at all

Tick is necessary for lots of stuff

[inland walrus]

Okay, what about a line trace to see what the player is looking at to check if it's interactable?

[lunar sleet]

Just be careful with widgets bound to tick because shit will get out of control fast if you keep doing that and scale up

[gentle urchin]

Lerping healthbars for example
(Or material magic)

[faint pasture]

I do over 1000 traces per frame no problem

[lunar sleet]

Cheap af

[gentle urchin]

I set my cap to 5k

Starts noticing it at that point

[inland walrus]

That's great, is there a way to check how expensive each event is that I do not know about?

[faint pasture]

Yes, profile it

you won't even see the cost of what you're talking about

Now, if you were refreshing a whole WoW or EVE Online UI every frame, that'd get heavy quick

fetching the numbers to update a shooter HUD on tick is totally fine, that's a nothingburger

[lunar sleet]

Aye, context matters

[inland walrus]

I only plan on using the tick to update around 3-4 progress bars and health floats for a single player game

[gentle urchin]

You can animate the bars in a material, moving the work to the gpu

[inland walrus]

Alright, I'll have to look into bar animating, but for now I think that should be safe by the sounds of it, I am not over exerting the tick, I am only using it a few times for UI updates

[gentle urchin]

Yeppyepp

Prototyping is just that

[frosty heron]

I am going to have hundreds of damage text and they need to have be offsetted and faded.

Does it help to turn tick off and have 1 manager ticking that goes to every update every text element?

[gentle urchin]

Yes

[inland walrus]

I appreciate the responses guys

[gentle urchin]

I went for that and can handle quite a few without issues (beyond lack of pixels lol)

[inland walrus]

How do I do that?

[faint pasture]

https://dev.epicgames.com/documentation/en-us/unreal-engine/unreal-insights-in-unreal-engine

[inland walrus]

Thank you

[warped juniper]

General question, are Overlap checks meaningful when performed every frame when only 0-3 actors roughly overlap with them?

[earnest fog]

Depends what you mean by "meaningful"?

[frosty heron]

What are you trying to do?

[warped juniper]

If heavy costed, sorry forgot to add a word there...

[warped juniper]

I have a lock on system that makes the player choose a target and face towards them while locked on.
When the Lock On key is pressed and an enemy is in range, they are locked on as normal. However I want the player to be able to hold down that key while an enemy is not in range, and if the enemy enters that range then they lock on. Afterwards, the overlap checks stop.

[mystic blade]

how might i get a spotlight that is part of a flashlight blueprint class and control the intensity of it with player input?

ik this isnt right but i'd appreciate a push in the right direction

[frosty heron]

Why do you need an overlap for this?

For my case I use timer

You probably need more checks but let your targeting component handle that.

Don't rely on components on the owner if you want to make it modular

You can just get potential actors in a radius

Then maybe line trace to see if anything is blocking the trace ( a wall or w.e )

[frosty heron]

Look at material on instances and object reference

It's not something people can walk through in 3 mins.

[mystic blade]

a flashlight cant be that complicated

[frosty heron]

It's not about the flashlight

It's you lacking the fundamental concept of what instances and reference are

Tldr you need to know the instance of the flashlight you want to change

[mystic blade]

ik what they are im just still learning how to properly use them

[warped juniper]

I'm not using a Component, I'm using the Check Overlap node

[frosty heron]

Then just pass the flashlight reference to your character

[mystic blade]

idk why u have to be a jackass about it

[frosty heron]

Idk what you are offended about

[faint pasture]

What class is this code in, and how does it know about an instance of a flashlight?

[mystic blade]

i have a separate flashlight class and for now ive just slapped the flashlight onto the player character so i can test it

the code is in the player class

[frosty heron]

The answer is already given, pass reference to the character class. But you get offended instead

[mystic blade]

im not offended. you assumed i was a moron by telling me i apparently dont know what instances and references are

[frosty heron]

You clearly don't based on what you demonstrate on the picture

Casting is just a type check

And I don't imply that you are a moron

But you sure as he'll being lazy about it

Going for the throat now since you are being a jackass

[mystic blade]

instead of explaining to me what i was doing wrong, you just said look it up and learn instead of providing actual guidance

[mystic blade]

^

[frosty heron]

Instead asking someone to hand hold you with a topic that is not gonna take 10 minutes for you to click.

Do your self a favour with reading the material that will help you.

Blueprint communication video by matthew will help

Or just rely on someone charity and get stuck again up to you

[mystic blade]

so just because im not using them right automatically assumes i dont understand the concept?

ur a dumbass

[faint pasture]

slapped it on how, as child actor component?

[mystic blade]

yeah

just so im at least "holding" it in some way for now

[faint pasture]

so drag a ref to that thing in, get its child actor, cast that to flashlight, then you can do flashlight things

you'd basically saying "Hey child actor component, get your actor and check if its a flashlight. If it is, let me treat it like one"

a child actor component is a component which spawns an actor, it is not the actor itself

[mystic blade]

so something a little like this?

or in the right direction?

ok cool

[earnest fog]

Hmm... well, I couldn't tell you for sure, but I can suggest a more performant solution. Instead of checking the overlaps each frame, you could use a Begin Overlap and End Overlap node. That way, you'll only be notified when the overlaps change. You don't have to only look at the new overlapping actor, though -- you can still use those events as an opportunity to check all current overlaps -- but it will cut down on the "current overlap" calls significantly.

However, you might run into an issue with initial overlaps. ie: if the overlap detector is spawned on top of existing objects, you may need to wait one frame and then check for active overlaps -- spawning an overlapper onto existing actors may not properly call "begin overlap", even though you would think it would

[warped juniper]

I could use the Begin overlap function, issue is I'm not using a collision component but the Check Overlap node

[faint pasture]

Overlap is being checked on a per-frame basis anyways, use that. Event Begin Overlap.

[earnest fog]

Maybe I'm missing something, but I don't believe it'd be possible to check overlaps unless some sort of collision is involved. Maybe you're not setting aside a unique component just for this overlap check, but I would think my suggestion would still work. What component is handling collision for the Check Overlap node?

[faint pasture]

show this check overlap code

[warped juniper]

Yes I tried to do it before but UE is not cooperating

I have basically no shaders set up yet it keeps loading them for too long

[earnest fog]

No worries -- when it opens and you're able to link the code, just tag us

[warped juniper]

https://blueprintue.com/blueprint/jv75088t/

There we go

This is the function I'm asking about. No components involved at all, but I can only make it look for anything when it's being called

[frosty heron]

You can call it as often as you need

[faint pasture]

IDK about using was recently rendered for this purpose but if it works it works

[frosty heron]

That bool hasn't been working for me

[warped juniper]

It's just a basic part to make it "work" atm but the behaviour is near perfect

[warped juniper]

Bear in mind it counts the shadow the actor casts as being rendered, for some reason

[faint pasture]

I'd just have a sphere collider tbh, how big is the lock on radius?

[earnest fog]

I don't see the node for Check Overlap, so I have to assume that you're calling this function on the output of the Check Overlap node. However, the "check overlap" node is still relying on some component to perform the overlap. Think about it like a ghost -- if you have no components capable of overlap events, then there won't be any. So, something is triggering the overlaps (unless you simply don't have any overlaps).

[warped juniper]

Atm 1200

[faint pasture]

thats pretty small, just have a sphere collider IMO. But whatever works

[warped juniper]

Ahh my bad...

I forgot to paste the other one

https://blueprintue.com/blueprint/9d1fpd-t/

Sorry was handling some other stuff

[faint pasture]

yeah you might as well just have an overlap capsule, it's pretty much doing the same thing

either/or though, it's not a huge deal either way

[warped juniper]

I wanted to keep the owner without any components unless it was explicitly necessary, so I just used the node

[earnest fog]

Yeah, if you're checking for overlaps at a player location each tick, I'd just add it as a collision component. However, if your player ref changes, it might not be quite so straightforward

You could still do it, but you might want to activate/deactivate said collision component when the player ref changes.

Or, you could even add the collision component at runtime to the active player ref, and remove it when the ref changes. But people may have mixed opinions about adding components at runtime.

[warped juniper]

Yeah but a reason I cannot use an On Begin Overlap to call the function is because I'm basing the lock on range not on collisions but actor origin proximity

The overlap is just used to find stuff

[earnest fog]

Right, that makes sense, but if I understand correctly, you're still using the overlap to define the list of actors you're comparing proximity between

I'm not saying that you could just slap a collision component on something and all your problems go away, I'm just saying that for this specific piece (establishing the list of actors to get distances from), you may get better performance by relying on begin/end overlap events via dedicated component

[warped juniper]

Right, the overlap node is that finds and returns the array of actors in range

Yeah I feel that could be the case. I haven't ever done performance tests in depth so I'm not sure what to do

Not to mention I should probably rewrite this as C++ anyways given it's loop based

[earnest fog]

Maybe. I think the most important thing is that it works. It depends how vital performance is to the current stage of development. You want to make sure you don't introduce too much friction by looking for the perfect solution, otherwise your progress will grind to a halt. You could always tag it for future performance improvement opportunities and move on

[faint pasture]

If you only have one thing doing this in the world it's probably nothing

like 0.01ms

[warped juniper]

Yeah the game is at infancy so I'm focusing on utility, but I don't wanna allow too many bad habits to make me rework more than I have

And yes this is something only a single actor would do atm...

I wanted to have something similar for the enemy player detection, but that's definitely better done with a collision component

[earnest fog]

That's a good mindset to have. But I think this is modular enough to be easily improved later, without it holding you back in the meantime. As a general rule, you probably want to avoid calling blueprint functionality on tick, especially if there's a loop involved, but... yeah, if it's just being performed by one actor, you're probably fine.

[faint pasture]

Doing work in BP is about 100x slower than C++. Whether or not that matters depends on how much work you're doing.

[earnest fog]

You may eventually try looking into AI components, since those are often used for detecting opposing characters and such -- I haven't dug too deep into that, but you could always tag the function with a note to investigate this somewhere down the line

[earnest fog]

Are you referring to the speed of development, or the speed of runtime?

[warped juniper]

Is the performance cost really that big of a step up?

[faint pasture]

runtime

[warped juniper]

I know though that Loops are essentially unworkable in BPs compared to C++ tho... I definetly want to convert some functions into cpp based

[faint pasture]

I mean that's not much of a loop, max is like what, 10x?

When I was prototyping my vision system I was doing 1,000 traces in a loop per frame, that was bad in BP lol

in c++ it's nothing

[earnest fog]

Ahh ok. Yeah, C++ is going to be more efficient. Didn't know it was that big of an increase, though. I believe you'll find the efficiency loss of Blueprints to be reduced by running in Standalone, rather than Play-In-Editor, but yeah, there's still a decent loss of efficiency.

[faint pasture]

but the slowest part wasn't the traces, it was the little bit of math I had

[warped juniper]

Yeah the stuff you run on each loop is what causes problems

[faint pasture]

calculating if 3 vertices were clockwise or counterclockwise took way more time than a trace against Visibility into a fairly complex map

[earnest fog]

Yeah, Blueprint math nodes are really tiny (they each do one very small thing), and you pay a cost for each call. I wonder if you might be able to reduce this cost by using a Math Expression, but in general, these sorts of calculations are best done in C++ probably.

[warped juniper]

For this case it's not gonna be much yes, but I have another loop based function in game that is kind of my mechanic hook, and can run an undefined number of line traces

[faint pasture]

I'd get into C++ sooner rather than later, it's really not that bad to work with

Start with a BP function library and your games structs and enums. You can get a lot of mileage out of those and it'd just be 1 .h and .cpp file

[warped juniper]

I also thought about making a full on trace base visibility system for picking up valid Lock-On targets, as opposed to Recently Rendered. A lot more lines involved but far cleaner, plus it uses components that I already have in each enemy given the forementioned mechanic

[faint pasture]

That's what my plugin does, 2d line of sight

[warped juniper]

Ohh cool, gues I'm in the right path

[faint pasture]

why do you care so much about line of sight, what's the camera perspective here?

[earnest fog]

But like I said, one of the biggest considerations when developing a game is your battle with friction. You want to make sure you don't introduce too much friction that it halts your development. I went for years without touching C++, and I had a great time. Recently, I've started spending a lot more time in C++, but it was really helpful to reach the edges of Blueprint capabilities first, so that the need for C++ became apparent, and so that the goals I was hoping to achieve were on the other side of learning C++. That way, I felt pulled into C++, rather than pushed into it.

If you want to get into C++, I honestly found the Epic-provided "Blueprint to C++" tutorial series to be really helpful. It's in 4.23, so a lot has changed, but honestly, just use an AI chatbot to help smooth over the conversion to the latest Unreal version, and you'll be good to go.

[faint pasture]

I still don't have any C++ actors, just components and subsystems and types

you can get a lot of mileage out of those and it's super simple

[warped juniper]

My game has a very gimmicky system...
For short the player can hit a key to shoot targetting 1 different body part of the enemy.
Each body part holds a SceneComponent class component called TargetPoint
A line trace is performed against the TargetPoints matching the body part the player tries to shoot
A random component whose line was not blocked is randomly picked as "the area you just hit"
If all components are blocked, then the shot misses by default.

[earnest fog]

Yep, exactly. Sometimes all you need is a simple Blueprint Function Library class in C++ so you can put together some useful functions in C++ and call them from wherever.

[earnest fog]

This: https://dev.epicgames.com/community/learning/courses/KJ/unreal-engine-converting-blueprint-to-c/kjB/unreal-engine-introduction-to-blueprint-vs-c

[frosty heron]

Blueprint loop is costly when the size is too big

[warped juniper]

Also in general, a loop function is very easy to make in cpp

[flat coral]

This is such a stupid question but what's a character I can use in a snake_case asset name that's guaranteed to sort first or last? You can see I tried here with the double underscore in CargoHall__Seam but it didn't work

[warped juniper]

You can add _ to the start of the name maybe?

[flat coral]

I still want to group by categories, though. The goal is to put the seams at the start of each category

[warped juniper]

Ah I see now...

[flat coral]

Naming it 0Seam looks awful and its entirely graceless, but it does work

[warped juniper]

That's because numbers go before _ in the sorting

Try renaming it to OneSideDoor

[earnest fog]

True. Also, if your input is a Get node, it will re-call the node every single loop. So, for example, if you load a text file, and parse the string into an array, and plug that array into a loop, it will call "parse into array" every loop, not just every time the ForEach loop is started.

[narrow sentinel]

So does this make sense ??

I have my player stats struct on my player and when it's altered send it over to controller to update the view model with the new individual values for say health and stamina

[faint pasture]

by player do you mean pawn?

or playerstate

[hexed oasis]

Hear me out, I got a character which raycast to another actor I need to know if the ray passed through the actor box collision, if it does it should call some function on the actor then cast another ray from the hit location but this time ignore the box collision(without changing the box collision) and it should hit the actor mesh (purple line) not completely ignore the actor and pass through it (green line)
I'm using line trace by channel for the raycast, the actor is a tube cube

[narrow sentinel]

Yeah sorry pawn

[faint pasture]

Don't even do that, when its altered fire a dispatcher

then anything bound to it can respond

but the pawn don't care

[faint pasture]

what is the first ray actually being shot at?

[narrow sentinel]

Yeah sorry that's what I'm doing

Should have been more specific

[hexed oasis]

the blue box collision in the drawing

[faint pasture]

it would aim at the center of the box but anyway, yeah just do that. Shoot one ray, if you hit, then shoot another with a different collision profile so it ignores the box, or you can manually ignore the box

[hexed oasis]

it should be the same ray incase it would pass through 2 actors
wait can you ignore specific primitive components?

isnt it looking for actors? wait let me check

https://dev.epicgames.com/documentation/en-us/unreal-engine/API/Runtime/Engine/Components/UBoxComponent
nope its not an actor

[faint pasture]

what are you actually trying to do?

[hexed oasis]

fire a beam from the character to some cubes with hole inside of them, if it passes through the hole in the cube it should call some function on the cube which will return some data to the character

[faint pasture]

also try out multi line trace

1 trace many hits

[hexed oasis]

it could work but I'm looking for another solution which basically involve ignoring the box collision...
also got lots of beams so it wouldnt be as efficient just to fix 1 case

[narrow sentinel]

Random question but how would you handle multiple trace ?

Multi trace

[faint pasture]

you get multiple hits

[narrow sentinel]

Would you just loop through the array to get the thing you need ?

[faint pasture]

a success is hitting box without hitting the other thing

if you get 1 hit on Actor.Box and no more hits on Actor, then you hit only its box

[hexed oasis]

it would output an array of hit results which is order by the hit time
so in my case it will hit the box collision then the actor's mesh then could hit another actor or w\e
so I'll check the hit results one by one, if its the box collision it will call the function then it will continue to the next hit result which is the mesh so it will do some other stuff which is cast a new multi line trace from this point with different end location

basically ignore every other hit pass the hit on the mesh

[hexed oasis]

the thing is I'm casting lots of beams and converting all of the to multi trace will tank performance

[faint pasture]

how many? no it won't

[hexed oasis]

the worse case is like 100 with distance of 100000 with lots of hitable objects in the way

[faint pasture]

You're in C++ territory either way

but multi line traces are probably easier than multiple traces

doesn't really matter, the slow parts gonna be your logic around the trace

[hexed oasis]

like for 99% of cases its like yo thanks for the 100 hits that u gave me I just need the first one

and the engine will be like wtf

new idea what if ill move the start location forward bit so it will start the trace from inside the box collision?

would it still hit it?

oh.. it just ignored it, welp, problem solved

nvm it still hit the thing

[faint pasture]

what are you actually trying to do?

why is it a cube inside a tube

show it in 3d

[hexed oasis]

the blue collision box is just to know which part of the actor the beam hit, the green mesh is the actor's mesh it should just end\reflect the ray when it hits this part

[faint pasture]

why not just hit the green mesh and use math to determine what side you hit?

[hexed oasis]

cause if the collision box isnt there there is nothing to hit

[faint pasture]

hit the green thing

what are you ACTUALLY trying to do, reflect some laser thing?

what's the game mechanic

[hexed oasis]

if it hit the green mesh it should just stop raycasting

[faint pasture]

just trace at the blue, if you hit anything but the blue, you're done

[hexed oasis]

the cube is a machine that if a laser beam passed through it it change the beam color

[faint pasture]

including the green

just don't have the blue

[hexed oasis]

and if I hit the blue?

[faint pasture]

shoot beam at center of box, if you don't hit ANYTHING, then you made it to the center. Change color and continue

[hexed oasis]

then what would it hit? xD

[faint pasture]

nothing

if you hit nothing then you succeeded

nothing was in the way of the center of the box

including the green part of the box

then you can change color and shoot another ray

[hexed oasis]

so the play fire a beam, the beam didnt hit anything, then I get all of the cubes in the level and compare the path of the beam with them to determent if it passed through them?

[faint pasture]

where does a beam get its aim from?

are you aiming them or are they automatically aiming at the boxes

[hexed oasis]

the player aim the beam

[faint pasture]

if it's player aimed then yeah, just detect if you hit the blue, if you did, change color and shoot another one ignoring that blue

ez

[hexed oasis]

but the blue(box collision component) is an object not an actor, u can only ignore actors

by ignoring you mean this pin right?

[narrow sentinel]

Why don't you give the blue box a specific collision trace channel

[faint pasture]

there's other blue boxes

[narrow sentinel]

I could only see one in their image of the meshes

[faint pasture]

you can use math to offset the start of the next trace

but I'd just multilinetrace, if you're only shooting one at a time it's no problem

multilinetrace -> if first hit is blue and isn't in ignorelist -> add hit component to ignore list -> change color -> trace again

[hexed oasis]

I can change the trace channel to ignore the box collision for lets say 20cm, it would ignore the box but still hit the mesh, then the next trace will be a normal trace which can hit boxes again

like cast a short ray just to pass the collider

[faint pasture]

sure whatever you want to do

more than one way to skin a cat

[hexed oasis]

isnt there an overlap event for line traces?

like dont stop just tell me if u overlapped it

[faint pasture]

yeah multilinetrace

its a trace that doesn't stop

how many of these are you shooting in any 1 frame? You said 100 but then you said they're aimed?

which is it, or are you aiming in 100 directions at once

[trim matrix]

how would i do that?

[warped juniper]

Well you would have to make an Actor with a camera that has a target location that tries to follow the player constantly

[hexed oasis]

1 which can get reflected up to 100 times, so potentially up to 100 rays

[faint pasture]

yeah that's no biggie, just multilinetrace it or do the math+offset thing

[faint pasture]

or you can just manually drive the camera with a custom PlayerCameraManager

[split crystal]

aim assist question, mainly for the steamdecks of the world: has anybody done perf testing of or have experience with various implementations to see what works best perf wise? e.g.
a) sphere trace.
b) stochastically offset line traces.
c) single straight line trace but all targets have extra "shoot me" invisible collision capsules around them.
d) other hacks?

[trim matrix]

i have one like that now kinda but it just locks the camera to one of the xyz directions, could i work off this? or should i just start over bc when i use this it flips the inputs after changing the camera

[warped juniper]

What you have is a system that replaces the camera your place has / uses...

[trim matrix]

oh

[warped juniper]

The overlap end is not returning the original camera because you cast to the character, you're not getting the actual camera to set it I think

[trim matrix]

im not sure, this is ab as far as ive gotten w camera stuff lol

[warped juniper]

My knowledge on this area is fuzz

But I know you should have the camera be a separate actor, not really a component in the player

[trim matrix]

wdym

[warped juniper]

Well make another actor with a camera

And use that to follow the character

[trim matrix]

like this setup? https://forums.unrealengine.com/t/3d-platformer-camera/564748/3

[warped juniper]

Ah yes exactly that

[trim matrix]

so id put the blueprint they have in a new actor for the camera?

[celest oar]

if i do this while shooting, the character will keep shooting forever

does any one know how to fix that?

[warped juniper]

I feel just copypasting it is not gonna let you learn about it much more...

You can try that but I don't think it's the best

[trim matrix]

im just confused by what they did lol

[normal cargo]

how do I undo this? I want to remove the static mesh from the given socket

[autumn pulsar]

Does Ease in Linear Mode not act correctly?

[autumn pulsar]

Is there a way to do some sort of call back event? I'm trying to do something over a length of time and I'm using Tick. I want to fire an event relevant to the function that first triggered the temporal effect

[maiden wadi]

May need more info, but that sounds like a timer.

[autumn pulsar]

was hoping to avoid a timer as that's an extra tick, but might need to

But basically I'm trying to interpolate the actor to a position

and I want to have functionality once it reaches the goal

but I want the logic to be specific to what called it

[maiden wadi]

Well, interpolation means you'll need a tick. Is this always on an actor and is the actor itself the caller or is something else the caller?

[autumn pulsar]

A function within the actor

Basically I have a "drop from ledge" event which then sets up the interp to location using the tick

but once I'm done moving, I want to start the ledge grabbing stuff

but I also have a "climb up ledge" event which also uses the interp to location

and when it ends, I want to set the actor state back to normal

issue is since it's a temporal event I can't just return it

[maiden wadi]

My initial thought would just be to make a component that can be put on the actor that has a location and delegate. Create it on the actor, bind the delegate, Set the location and let it's tick function move the actor for you. Once at destination, set it's tick off and call the delegate, optionally destroying itself afterwards.

But ledge climbing sounds a bit more complicated than that.

[autumn pulsar]

so not sure what I can use to work with that

well because my actor is the player, I'm basically ticking the entire time

[high gale]

Can someone please help me out dynamically changing an AI perception when the player crouches. I have searched online and the only solution I found was to use something like this but it just dosen't work, I even tested it out using event beginplay and the perception stays as the default

I made sure that the AIPerceptionCrouch had the 'start enabled' turned off as well

[autumn pulsar]

why do you have 2 senses?

[high gale]

One has shorter vision range then the other and I want to be able to swap between them when the player crouches or not

[autumn pulsar]

Any idea why my Lerp Node is fully lerping to the end despite the counter not being at 1?

https://i.imgur.com/AvQbuYH.png

Oh

I'm being dumb

[autumn pulsar]

made the stoopid of feeding in my actor location into A

[frosty heron]

You might be doing pre mature optimisation by the sound of it. You shouldn't even be worried about Wether to use timeline or tick, unless it become a problem.

And if you actually tanking fps then you can profile it.h

Favouring tick or timer for the sake of performance strike me as wrong.

Chances are it won't even cost you 1 fps. But if you want to find out the actual cost you can always profile it.

Like bp loop is "slow" but it doesn't mean that even the cpp people doesn't use it.

If you are iterating over a dozens of element then who cares. The difference would be negligible

[gentle urchin]

Getting the event is just checking if the alpha reached the target alpha

Tick -> alphacalc -> lerpLogic->branch(alpha nearly equal targetAlpha) -> trigger event

[frosty heron]

@gentle urchin I'm attacking EQS right now, do you have any good material by any chance?

[gentle urchin]

None, sorry 😅

Havnt touched eqs yet

[frosty heron]

Ahh ok I thought I saw your A.I with it the other day.

[gentle urchin]

My AI is usually the dumbest shit one can come up with

[frosty heron]

I never made A.I from scratch... used some market place plugin for previous project.

It's not good enough, will see if I can make it better

[gentle urchin]

Mine is pretty barebones but it is made from scratch

[frosty heron]

A diamond formation for party members to resolve shouldn't be too hard I hope.

[gentle urchin]

Some custom wannabe brain logic and task scoring

I wanted it to remain as responsive as possible, so at the tile of testing i could have a few thousand of them fully ticking

Made alot of c++ jargon to make that happen tho. Quick aborts and stuff

[frosty heron]

I can't even handle 30 skeletal mesh atm

[gentle urchin]

Mind you , my ai pawns are ism instances

[frosty heron]

In UE 4 I had 80 with no issue

Ahh

[gentle urchin]

So im just lerping those

[frosty heron]

So you have some manager

[gentle urchin]

Indeed

[frosty heron]

Nice2

[gentle urchin]

Im pretty sure my initial setup was more performant tho 😅

Feels like its getting worse and worse when im 'cleaning it up'

[frosty heron]

Flawless

Is it gonna be bullet hell game?

[gentle urchin]

no, but it probably could xD

it was a city builder project

[frosty heron]

Prototype already looking promising

[gentle urchin]

some sort of The Settlers thing

[frosty heron]

When you iterate over all of the actor do you slice the process?

[gentle urchin]

Not currently no

the only thing i slice up is the traces

[frosty heron]

And no hitch yet? That's awesome

[gentle urchin]

15k

[frosty heron]

Look at all the ants working

[gentle urchin]

Pretty sure there's more room tho. I havn't really done any multithreading yet

at some point everything starts to count on the performance

Pretty sure this iis from 4.26/27. Had better performance by far

5.X brings all this extra nosie too : (

[cobalt iris]

so im having a ui issue. i have a pause menu that can be opened and closed by a key press. there is also a button to close it. if i use the button to close the widget i need to press the key twice to pause again. if i unpause with the key it acts normal. the key's input is working and all other inputs work

im copying off of what i did in another project and i had this same issue, but i dont have a clue how i fixed it

first image is the pause menu widget, 2 and 3 are on my player character

[maiden wadi]

This sound like your key wasn't flushed during the pause and thinks it's still pressed until you press it again, which won't run pressed but when you release it there it will release. Which allows the second press to actually run pressed event. There's a flush keys call you might need to make after setting the input mode.

[ruby glade]

Hey, I am trying to make a slender man game, but I’m struggling to understand how to make the AI like I kinda get it that he teleports behind player and like the more pages the longer he stays there and doesn’t disappear. But I am struggling to understand how to approach making this AI should I use EQS or what? I’m kinda new to ue and still don’t really know how to do what

[dark drum]

EQS is just a way to query the environment (Environment Query System). You can use it to get a spot behind the player that isn't blocked so they don't teleport into a mesh. Think of EQS as just a way of generating data, it's up to you what you do with it.

In terms of AI, it might help for you to make a sudo flow graph of how the AI should work and what sort of conditions might be required for it to work the way you want.

Idle -> Query -> Teleport -> Check Pages -> Delay -> Move to Player -> Idle (Loop)

[lost sierra]

hey, when the player character (or any enemy) is stood still, bullets will not collide with them, and therefore don't do any damage. It works perfectly fine when they are moving, just nothing happens when they're stood still. I have no idea why, any ideas?

[frosty heron]

hard to pinpoint but maybe you can open console, type show collision
and see which component react to the bullet.

[lost sierra]

sorry, i might be misunderstanding what you have said, but the issue i'm having is that when the characters are stood still there is no collision whatsoever, the bullets just pass straight through them without any component being hit. This would mean no component is reacting to the bullet, right?

[frosty heron]

but when they move, it collide?

[lost sierra]

yes

[frosty heron]

well first of all you will have to decide which component you want react to the bullet

normally if you want to be accurate, you do use physic assets

otherwise for a "close enough approach" you can use the capsule component

what sort of game is it?

like FPS?

or RPG

[lost sierra]

it's a top down rougelite, for now i have been using the capsule component

[frosty heron]

and are you sure when you are moving it actually collide with the capsule component

I would do a quick test there

just print string the hit component

since you can do a hit when the character is moving

See if it's actually the capsule component being hit

otherwise maybe the capsule was never hit in the first place and when you were moving you happend to hit something else (could be the U.I widget for all we know)

if we can deduce the capsule component never being hit then we can just fix the collision settings

[lost sierra]

is there a way of me checking that without it just saying the bp name? (sorry about this), all it is coming up as is bp_topdowncharacter

[frosty heron]

show code

it seems you are printing the actor being hit, we want the actual component being hit

[lost sierra]

that's what i have for the print string

[frosty heron]

Other will print the actor

[lost sierra]

ah ty

[frosty heron]

so we know we hit Bp_topdowncharacter

but which component of the bp_topdowncharacter?

we would need to print the other Comp

[lost sierra]

collision cylinder

[frosty heron]

Other = the actor

can you show your bp top down character

so is this Top down character shooting another top down character?

[lost sierra]

yes, so i have the enemies as children of the main character blueprint (for one of the main points of the game, and it being easier this way)

[lost sierra]

which part sorry?

[frosty heron]

the whole bp class uncropped

just want to see the components

[frosty heron]

whos shooting who btw?

at the time it gets printed

[lost sierra]

here are the components, at the time of getting hit it's one of my scientist enemies hitting the main character asset

[frosty heron]

ok lets look at the most important settings

the bullet collision setting

and the Capsule component collision setting

[lost sierra]

the issue with this is due to a lot of code, there is a lot about possessing enemies as the main character can do that

[frosty heron]

Yeah but the collision shouldn't be affected

so when the character stood still it never hit the capsule?

but it does when moving? that's weird

[lost sierra]

i have the bullet collision on the default blockalldynamic

as for the bp character that is on pawn

[frosty heron]

need to check the capsule collision setting, as that's what you are testing againts

try to post it uncropped

[lost sierra]

yes, that is the capsule sorry,

[frosty heron]

looks fine tbh

so when you stood still, the hit event never print?

[dark drum]

Enable 'Simulation Generates Hit Events' on you're bullet.

[lost sierra]

nope, but when you move it works fine

[lost sierra]

didn't change it unfortunately

[dark drum]

Show your bullet component hierarchy.

[dark drum]

Make your sphere the root. 😉 (Replace the default scene root)

[lost sierra]

yep, thank you

[dark drum]

Physics actors always behave weirdly if the physics mesh isn't the root. The component ends up moving inside itself locally instead of the actor moving in world space. 🙂

[frosty heron]

that explains it 👍

[lost sierra]

I didn't know that, ty

[dark drum]

I did some experiments over 10 years ago now (UE4 Rocket Preview) with some physics actors and I ran into some funky issues. It's a behavior that has never changed lol.

[trim matrix]

don't know why my camera is behaving so weirdly

[dark drum]

It could be a number of things but I would take a guess and say it's because you have a spring arm attached to the neck bone. Adding to this, if the spring arm is set to use the control rotation, you could end up with multiple rotations getting applied. (Such as the mesh moving and then the spring arm)

[narrow sentinel]

Anyone ever had issues with the UE damage system ??

so the Apply Damage and the Any Damage on the other side

for some reason I don't seem to be getting the event firing on player for any damage

nevermind haha

[lucid skiff]

hello there, need to ask some questions
I'm working on ALS+GASP Project and trying to change the default character with mine, but it turns out there is a problem: the clothes look like they don't stick to the body when run forward. But when moving backward and walking, there`s no problem at all; the weapon also does not sit in the right-hand position. Hopefully, someone who could assist me in solving this problem. Thank you in advance.

[narrow sentinel]

so what would make more sense here, i have my Player Stats struct would it be better for me to pass this fully through to my player view model

or do what I'm doing now which is on the player controller take the updated struct and break it out and send through the update values indiviidually to view model so this be the health, stamina etc

[dusky cobalt]

If you are talking about updating widgets, then widget should care only about what is it suppoosed to display, not calculate or care how to process ''raw'' data. You just send ready to be displayed value. So if let's say you have 50 bullets, and you take 1, all widget is caring about is 49, not how many you had 1 sec before and how many he is supposed to take out (-1? -2? -3?).

[narrow sentinel]

nope so I use the View Model system to be the pass between of stuff to my widgets

my question is the view model what would be better pass the updated struct through to the view model and have it break out the variables and do stuff or have what I do now which is controller breaks out the updated struct and passes through to View Model the specific indivdual values

[maiden wadi]

If you have a container with all of the data. And all of the data needs to be transfered. I would just transfer the container. The using thing can break the info out if need be.

[narrow sentinel]

fairs

[tame swan]

can you explain how ? you know im beginner What will I should connect with break vector before , and after will connect with make new vector , but after what i should connect with make new vector ?? and thank you man

[tropic token]

is it possible to get to blueprint event graph node by nodeguid? I have some not very informative warning message about instanced struct somewhere in blueprints and all I have is this node guid so far

[dusky cobalt]

If you have ''yellow' 'Vector, you can click on it and Break Struct which will show you single values (X/Y/Z) in this, then you can use only X and Y and leave Z.

[dark drum]

You could try doing a search.

[tropic token]

it happens here and this callstack is a mess

I know which blueprint is that..

[tame swan]

No way !! its that simple i try a lot of solution and didnt work. its that simple thanks man I literally appreciate this from you

[narrow sentinel]

so what would people do in this situation, you want to implement an inventory type thing. Would you implement this in terms of as an actor component which can sit on any actor it's put onto and then interface to link into it. Or would you make a specific actor derived class which is the inventory ??

the only advantage I can see between the two is Actor component would prob be less heavy on performance as it'd be just logic

doing it other way however means it's a specific derived actor class which would allow better filtering in some situations

[tropic token]

well, you shouldn't leave InstancedStruct pins without anything connected to them, it will produce ugly warnings like:

LogUObjectGlobals: Warning: Failed to find object 'ScriptStruct None.('

nailed it!

🙂

[maiden wadi]

IMO There's no reason to make it anything more than a component. Even if you have a special actor that acts as an inventory for things, the logic can still be compositional. But TBH making a full actor just for inventory isn't a great idea. You need inventory for a lot of different things. Crafting tables, storages, characters, vehicles, etc. You do not want to create two actors for each of these things, and you don't want to lock yourself into an inheritance tree and for handling inventory data, there's nothing an actor can do that the component cannot.

[narrow sentinel]

so what Im thinking then of the inventory being actor component that I can plop onto anything

that needs it is better

[wide light]

how can i make the text disappear when the raycast is not hitting the actor?

[maiden wadi]

You need to cache the thing you hit.

1. Trace
2. If CachedVariable exists and is the same as the hit thing then stop here and do nothing else.
3. If CachedVariable is not valid OR it is valid and is different than the hit thing then call StopShowingInfo on CachedVariable.
4. Then set cached variable to the hit thing.
5. If CachedVariable is valid then Call ShowInfo on the CachedVariable

So you effectively track the thing you're hitting with the trace, and only when it changes you tell it to stop showing the thing and show for something else.

[autumn pulsar]

I don’t think I’m at the level to really know what counts as premature optimization. Ideally I want to approach things in at least a sane manner so refactoring it doesn’t become a pain

Not entirely happy with the solution I have

[faint pasture]

You can also just multiply it by vector 1,1,0

@autumn pulsarDropping from a ledge by definition doesn't have a constant time. Just tick

Tick -> we walkin? -> do walk stuff
-> we falling? -> do fall stuff -> we ledge grabbin? -> etc

although you'll probably want a simple state machine with an enum as the state. Are you in state Walk or state Fall or state Ledge or what?

That's effectively what pretty much all character movement systems do:

Tick -> ok lets move based on MovementMode -> did something happen to change MovementMode?

[autumn pulsar]

That's what I ended up doing

[high iris]

Have others ever run into this issue and were able to figure out what was going on? Looks like I'm hitting it now myself too. Can't seem to find what's wrong with the asset that apepars to generate this error:

https://forums.unrealengine.com/t/failed-to-load-referenced-by-gen-variable/946500/6

[drowsy rivet]

Can someone help? I am trying to get event set aiming rotation node but when I click on add that node, it just transfers me to this tap without adding the node, and the blueprints are child class animation blueprint, and the event set aiming rotation is in blueprint class

how can I solve this problem

This is how the blueprint should look like, but I don't have event set aiming rotation, maybe there is an alternative to it?

[proud salmon]

Hard to tell without better images but Looks like you have two different things basically called the same thing.

SetAimingRotation is a function.
Set Aiming ROtation is an event .

You need to override the correct one.

[swift jay]

Hey folks trying to understand why a line trace won't fire straight from the actor's Forward vector. Always seems to be shooting downwards. The mesh is pointing forward on the X+ axis so Forward Vector should be good in theory...

So far I've tried the following:

• Get Actor Location as Start Point, Get Actor Forward Vector * 10000 float as End Point

-Get Fuselage (Static Mesh) Location as Start Point, Get Fuselage Forward Vector * 10000 float as End Point

-Get Socket Location (MachineGun) as Start Point and Get Socket Rotation to get Forward Vector *10000 as End Point.

I feel like I'm overlooking something here.

[faint pasture]

10000 x forward isn't a good location

[maiden wadi]

#rules Number 8

[faint pasture]

Start + Direction x Distance is

[swift jay]

Like that?

[inland walrus]

Does anyone know why false might not be triggering?

[drowsy rivet]

set aiming ROtation is the one that is shown in youtube video, it is just mispelling

[drowsy rivet]

And I overrided the set aiming rotation

[swift jay]

On the IA_Sprint part of the Update Stamina part?

[faint pasture]

Still way too short tho. THat's 100m

[swift jay]

True but it's for testing only lol, sadly didn't work

[inland walrus]

What do you mean?

[swift jay]

Which part of false isn't triggering?

[proud salmon]

Your stamina is clamped to 0.99 but you're looking for >= 1

[final berry]

I'm confused, I see in my sizemap that a blueprint references a certain blueprint, but when I ctrl+f in that blueprint I cant find any reference to it, neither in the variables. Where can it be references other than those two places? I'm stumped. Also restarted Unreal and rebooted pc to be sure, but the link is still there\

[inland walrus]

Even if it's still set at >= 0 is still doesn't work

[faint pasture]

why are you not using the socket

Trace from socket to socket + socket.forward x distance

[inland walrus]

Setting the speed so the player can no longer sprint when they hit 0

[proud salmon]

Sorry, the issue is it's never hitting the false branch on the update stamina?

Assuming that function is called on tick?

[faint pasture]

That math is goofy.

[inland walrus]

yeah

[proud salmon]

It's flipping

[faint pasture]

Right now what you got is framerate dependent

[proud salmon]

It's true, goes down -0.001, becomes false, goes up 0.001, etc etc

[faint pasture]

The general form is this:

Tick -> Thing = Thing + Rate * DeltaSeconds (optionally clamp result) -> check stuff

[faint pasture]

Stamina = Clamp(Stamina + Regen * DeltaSeconds, 0, 1) -> if Stamina nearlyequal 0 -> stop sprinting

[inland walrus]

Could have something to do with the * no?

[faint pasture]

that 100% doesn't matter, thats just for the bar

[proud salmon]

It's not not hitting false, it's just flip flopping every frame.

[swift jay]

Put it back as socket transform, it definitely changed but still firing at a general direction instead of forward vector, so maybe the answer is due to the fact the plane's location is being updated via World Offset?

[faint pasture]

show current code

[high gale]

I am having an issue with one of my interfaces and I don't understand why it is not communicating with each other. This is the code for the input of crouching

[swift jay]

Wait nvm

[high gale]

this is the reciever

[swift jay]

Just realized I didn't put the socket name lol

[inland walrus]

I put the clamp in so it doesn't go below 0 or over 1, is that wrong?

[swift jay]

Crude still didn't fix it

[faint pasture]

clamp the final result, not the value before addition

do it like this:
Tick -> update stamina -> check if you should stop sprinting or whatever

[inland walrus]

So 2 events?

[faint pasture]

no, just do it in order

update the stamina, then check if you should change stuff

[proud salmon]

Just think about the flow.

You hit sprint, your stamina is 1. The branch is true. It starts sprinting. It uses 0.001 stamina. Now your stamina is 0.999, which is NOT >= 1. So now it's false and you're not sprinting and it adds 0.001 stamina and now your stamina is 1. It goes back to true, etc.

Change the stamina value to != 0 instead of >= 1.

You'll need to do more and what Adriel said as well as just making it != 0 will mean you'll just flip flop when you get to 0 stamina but it should let you sprint until you run out.

[inland walrus]

I've done it like this and it seems to be working

The only issue I have no is that I have updated the clamp, it as the extra .1

[proud salmon]

Clamp after, not before

Player Stamina + 0.001 --> clamp

[swift jay]

I could be dead wrong here, if you were to add a breakpoint to IA_Crouch, follow along the execution path, I'm guessing that part will work since you only want to fire it once (Started) and then press it again to uncrouched.

If you notice that your path ends abruptly before it reaches the Start Crouch Interface, then your Is Sprinting isn't being set properly.

[faint pasture]

Another approach

[inland walrus]

Thanks dude

[high gale]

I have never used breakpoints in ue5. I didn't even know blueprints had them to be fully honest

[swift jay]

Ahh gotcha, yeah they're super useful lol

[drowsy rivet]

How to solve it?

[high gale]

the actual mechanics of sprinting and crouching works though

if im crouching and press shift, it uncrouches me and starts sprinting

and vice versa

[swift jay]

Alright, so which part of the interface is having issue?

[high gale]

well the AIC I send it to is not calling the event

this is not popping

[swift jay]

Ah alright!

[dusky cobalt]

interface? macro?

[final berry]

Interface in what way? How does an interface reference another blueprint. Isn't the whole idea of interfaces that you decouple bps? 🤔

[dusky cobalt]

you could have interface added to that blueprint where you have variable of that other bp (in any function in the interface)

[cobalt iris]

ill look into that, thanks!

[final berry]

Not the case, but thanks for the info!

[trim matrix]

what should i do instead of just copying it then? im not sure where to start other than needing a spring arm and camera in another actor?

[warped juniper]

I mean you should recreate it, just not mindlessly copypaste it. Try to understand it, that's what I mean

[trim matrix]

i dont rly understand it tho, i get the camera focuses on the sphere follows x and y. but im lost past that

[warped juniper]

Well for short the camera only moves vertically when it explicitly needs to

That's what makes it a suitable camera for a 3D platformer

[dark drum]

No because that's not the point of an interface. It can be used that way in limited capacity but that's not their purpose. Interfaces can actually make memory management worse if you're not careful.

As for your issue, check for unused local vars in functions.

[warped juniper]

That makes mecurious, how can interface hidner memory management?

[dark drum]

If you use an object type input/output on a function, anything that uses the interface (even if they don't implement the function) will still force load that class. When you're using it with 20+ actors, good luck controlling when it loads. Granted you should avoid object types in interface functions and stick to just data (floats, vectors etc...)

[warped juniper]

I see... What if the Object is one that I always know the game will have loaded regardless?

For example, a Character class has an Interface event with a Character class input

[dark drum]

Then it doesn't make a difference but then why are you using an interface. 😉 You have to remember the primary purpose of an interface is to allow two (or more) classes that don't share a common parent to have/use the same set of functions.

[warped juniper]

In this case, it's an Interface for a custom Damage event. Player / Enemies inherit from the same class, but a separate class such as a Trap can use it to deal damage

Bear in mind I am not a good coder to begin with. Sort of working on my own atm haha, so ideal practices are not my area

[dark drum]

In this example, if they all inherit from the same base class that has the damage functionality, there's no need for an interface. You can just cast to the base class and call the function. No need for an interface. Just adding extra unnecessary steps.

From a BP perspective, interfaces should be the last thing you concider for solving a problem. There's usually better ways to do it, either through hierarchy or using components.

For me, I would make a stats system that handles damage using a component. I would then place the component onto the things that I want to have health and be able to be damaged. This method is more flexible, plus allows for default behavior. Adding to that, you get the option of event dispatcher calls that the thing using the component can then use for additional functionality. (playing sounds, VFX etc...)

[warped juniper]

Ahh, so if I want a Character class, and an non-Character Actor class to both take damage, I can make a Health component that enables them taking damage, dying etc?

[dark drum]

Yep.

[warped juniper]

And then, just get that component, do a pure cast to it...

[dark drum]

Yea. The thing about core systems, is they'll be loaded for 99% of your game so farting about with interfaces for 'memory management' is a little silly in my eyes. In terms of the heavy assets suchs as meshs, materials, sounds, etc... these should only be specified in a child when needed and possibly use soft references where possible.

[warped juniper]

This is all great information, thanks!
I do wanna ask, in my game player and enemy health work slightly different...
Enemies take Area damage (arm, head, leg etc) while the player as of now doesn't have that.
Should one component just be a child of the base Damage / health component then?

I always feel a bit iffy when using casts, tutorials and material tell you to fear hard references but provide little solutions or plans to tackle it, or even lay down when they are necessary, fine or good to have...

I will keep Interfaces then for communciation across different classes then, and rework the systems to fit this... Thanks a lot for the feedback!

[dark drum]

You're parent component can have the core functions (They don't even need to do anything. In this case you should mark it as an abstract class) and then you set them up in a child when you override them. This can allow you to have the behaviour handled differently.

[dark drum]

Yea, you can ignore the 'Stop Casting' crowd. Just be aware of the type of refs you are making and structure you're classes accordingly. Making bare bone base classes are amazing.

[warped juniper]

I actually did that for my game... I'm using a hit detection system based on SceneComponent classes

I have 1 for each body part of the enemy. To detect which area the player is firing at, I simply GetComponentsOfClass and use the desired class.

[dusky cobalt]

tbh at the start just try to do things as you think its good, only change code when actually you see performance drop or something like that, if you are just learning or making small game all these things to make it performant doesnt matter and there is something called overengineering or overoptimizing at the start... trying to find some perfect solution might take you 3 days meanwhile you could just write 3 lines of code and boom it works, who cares how really, unless you are looking to learn etc. then it's ofc good to do research, just dont worry to much at the start

[warped juniper]

And no I can't use collisions for this, I'm not making a shooter where you can manually aim and such...

I admit, I did not know a lot about UE for a long time. I spent a year ish making a solo game and it really did wonders for my understanding... I neglected the art but it paid off

I agree, working code matters more now... But I also wanna be wise enough to avoid bad habits early on so I don't need to rework all of my code as opposed to half of it...

[dark drum]

My stuff got significantly better when I limited my use of interfaces and started to use hierarchy and components more. Also uObjects are amazing for more data type stuff that doesn't need to be in the world.

I don't get half as confused when I revisit my old stuff and thats will little to no comments. 😅

[warped juniper]

Hmmm, still I gotta rework my mindset

So as a rule of thumb, if I want 2 actors of the same class / parent, just use casting

[dark drum]

In a way yea, ideally to the lowest level you can without all the big gubbins. (mesh, materials etc...) Also, you only need to cast if you need to call a function specific to that class. If it's on a parent, you can cast to that instead.

Alternatively, using the 'GetComponentByClass' node can be great as you don't need to cast to be able to get the component. You just have to be wary if you have multiple of the same class.

[warped juniper]

Right. For ActorComponents that's great, and I still have a few more custom classes only one of can exist in a heirarchy at a time...

Namely my lock on pivot target that I use for... Well lock on

[dark drum]

You'd suprised what can go in a component. For me its probally 90% of what I make. Then i assemble them on an actor and use event dispatchers to trigger visual changes in the actor.

No need to keep repeating yourself when you don't have too. 🙂

[gentle urchin]

Components is life

[inland walrus]

@faint pasture no longer using event tick

[gentle urchin]

I wonder tho, how often have you actually used the same components from other projects ? 😎😏

[dark drum]

Components and uObjects. 😄

[warped juniper]

Got it. This is all very useful, thanks for the help

[gentle urchin]

Uhhhh 😅

This is likely worse than just ticking it

[dark drum]

I've used project sunrise as a base for a few prototypes so I guess a lot lol. I've also stolen the UI setup.

[gentle urchin]

That is awesome if so ! Great job 🙂

Most components ive made have ended up as one time things

Keeps the code compartmentalized tho😄

[snow halo]

the problem with this is that it takes the last thing and stacks it on top of everything else and doesn't make any new slots, the number always goes up and up and up, and all happens on the same first slot image

[dark drum]

Yea, creating a child to hook into another system was a nice thing to learn. Means if I want to migrate the parent, I can without it screaming at me.

[dark drum]

Triggered is called most ticks so the delay node and sudo loop isn't really needed. Personally, you'd be better of just starting a timer on started and stopping the timer on completed.

[gentle urchin]

I would just have this on tick straight up

[dark drum]

Whats this supposed to be doing?

[gentle urchin]

IA_Sprint -> SetSprinting(CanSprint())
IA_Sprint_Completed -> SetSpriting(false)
Tick -> IsSprinting -> ReduceStamina -> SetSpriting(CanSprint())

[narrow sentinel]

can you not do add timeline on user widget derived widgets ?

[gentle urchin]

No

you must do it via tick

[inland walrus]

Thanks, any idea on why this isn't updating the hud?

[snow halo]

although i should probably be using those symbols/icons for the crafting system instead

and use the realistic looking ones for the inventory menu because it's gonna be in your face for most of the time, and that probably gives me creative freedom to make those icons silver, golden etc. if youre gonna craft a better one i guess, or maybe not, idk, because then that would mean i have to change the crafting icons too

not sure yet if im gonna add stronger or weaker crafting tools

and there's our crafting menu, it almost looks more like a marketplace but i think the colors dont really match, might have to change that one up later a little bit

although now that i think about it I could probably copy the same functions I have in my inventory system

which I kind of am

but some of the nodes in there had to be changed a little bit, but almost same logic applies

it looks like I might have to make a variable to store each index insteace and then use that index with a find node to get it out of the array

and of course there's always the monkey code method which is to write 10 million functions for each slot image

which might work but it's a little bit more work

[faint pasture]

you still are though

that event is ticking

[inland walrus]

But it's only ticking whilst it's being held down no?

[faint pasture]

you want to stop regening stamina when the button is released?

[inland walrus]

I'm confused, Inputs are always on tick?

[inland walrus]

it will loop the regen until it hits 1.0, then it will stop right?

[faint pasture]

why go through all this spaghetti trouble, look how simple my example was

you're reinventing tick with an extra tick and delays

[inland walrus]

Because once it regens and hits 1, it's going to do nothing whereas if it was on tick, the tick is going to constantly be checking if it should do something

[faint pasture]

It's a total nothing burger, the branchless approach I showed probably has higher performance all the time, and it's simpler

[flat coral]

Is there a way to find out whether a component has a physics constraint attached to it?

I've got these spiderwebs that can catch the player character, or whatever else, by applying a physics constraint to it. Works great. Problem is, they're balanced so you can just barely pull away from them and escape, so if you get caught in 2 overlapping ones, escape becomes impossible.

So I need a way for the second web to realize the thing is already in a web and not apply its constraint.

[mild jacinth]

it might be kind of a stupid question but do blueprints hold timestamp data of when they were originally added to the event graph

id imagine not, but worth a shot to ask

[frosty heron]

What does originally added to the event graph mean?

[mild jacinth]

initially. the first time someone as a developer (not Epic developer) added a node to a blueprint graph

[faint pasture]

The closest you'll get is through your version control system

[warped juniper]

@dark drum Hey, sorry for pinging this shortly after, but regarding a Life actor component, how would you reccomend making it check for the owner's gameplay tags without doing a hard cast?

Just need to check for a CanHeal condition

[maiden wadi]

How did you put the tags on the actor? Through GAS?

[warped juniper]

Just a custom function I'm using

I'm not using GAS for my project

[maiden wadi]

RIP. But in general if the tags aren't on a component, or in a base class, then your only option is an interface.

[dusky cobalt]

Get Actor > Get Component by Class maybe?

this will let you acces everything in the component without referencing actor

[dark drum]

Interface. There's one in the engine but you can't implement it without c++ so you might have to make your own.

Alternatively is to have the gameplay tags in a component like an attributes/stats component which might make sense. Wouldn't make much sense on its own though.

[warped juniper]

So you mean store the GameplayTags in the relevant componenets?