multiplayer

[quasi tide]

Movement is not the issue.

It is very specifically rotation

Ignore the naked man and messed up animation. Not the focus 😅

[fathom aspen]

Ez mode you would check if NetMode is ListenServer.

[fathom aspen]

Hmmmm, videos are the best

[quasi tide]

Movement works as expected.

I know why it is behaving like this. Just want to be clear about that.

Which is why I asked the question that I did.

[fathom aspen]

So basically you are saying that this nasty method is what causing the behavior we see?

[quasi tide]

Yes. Because I tell it to use the default implementation if it's not local.

I can't do it another way because I don't have a camera for remote clients.

Thus my question

[pallid mesa]

there is a bug on backwards rotation on cmc for orientmovement

[quasi tide]

This is not a bug in my case.

[fathom aspen]

Ah so I think I misunderstood you. Overriding that method fixes what we saw in the video?

[quasi tide]

No.

[fathom aspen]

Ok I get it

[quasi tide]

Overriding the method allows me to just check the orientate to movement box and have the CMC rotate shit for me

The small window in the video is the correct behavior

And it works perfectly fine for local only.

[fathom aspen]

Right, but you don't have camera for sim proxies

[quasi tide]

Correct

auto* Controller = Cast<APawn>(GetOwner())->GetController();
if (Controller->IsLocalController())
{
    if (Acceleration.SizeSquared() < KINDA_SMALL_NUMBER)
    {
        // don't rotate if we don't need to
        return CurrentRotation;
    }
    auto Forward = Cast<APlayerController>(Controller)->PlayerCameraManager->GetActorForwardVector().GetSafeNormal().Rotation();
    return Forward;        
}
return Super::ComputeOrientToMovementRotation(CurrentRotation, DeltaTime, DeltaRotation);

[pallid mesa]

this the bug

https://github.com/EpicGames/UnrealEngine/pull/6645

[fathom aspen]

I hate saying replicating camera's rotation is the solution

[quasi tide]

I know the different ways to solve this. I just want to know if there is something in there that I'm overlooking.

[pallid mesa]

take a read to the github post, maybe it helps to get an insight of things you might be overlooking at

specially at the explanation from Hoffman

and I mean it, seriously.

I've read all you wrote

[quasi tide]

the purpose of ComputeOrientToMovementRotation is to rotate the character's forward vector to match it's acceleration vector. This means if the player is accelerating backwards they will turn around rather than back pedaling.
Yes, this is how I understood the function as well. As well as the intention.

And no - I am not encountering this bug (and honestly, never have)

[delicate adder]

Anyone know a source for a logspam of:

LogNetPlayerMovement: Error: ServerSendMoveResponse: Failed to find a NetConnection/PackageMap for data serialization!
?

[quasi tide]

Again - I already know the why, the how, and potential fixes. I was simply asking if anyone knew any other approach.

[pallid mesa]

using the controller yaw input and disabling orientrot

[fathom aspen]

And wasn't accepted? Weird

[pallid mesa]

its a tough problem

since for me and in my brain...

it makes sense that when you backpedal

it just...backpedals

but apparently this isn't desired

LOL

[fathom aspen]

Good that I'm not the only grounded kid for once

[quasi tide]

I would not expect the character to back peddle if I have a boolean flipped called "orient rotation towards movement"

[pallid mesa]

yeah I understand aswell why they wouldn't accept it

I haven't checked to see if something has changed to fix this

the fact i found out this way of doing tank control was rather interesting lol

[quasi tide]

This doesn't solve the problem either. The problem is not with the local machine. It is specifically with the remote machine. It is happening because it is using the default implementation for how the calculate the rotation. If I only use controller yaw, the problem ends up being the same, just slightly different.

[pallid mesa]

but if u use the controller rotation and turn off the orient rotation to movement... then remote machines will see the rotation you've set locally in your controller, dont they? (Unless I'm missing something, I'm half asleep)

[delicate adder]

Seems to be occuring when I SetAutonomousProxy(True) on my Character in PossessedBy... is that not a thing I should do?

[pallid mesa]

you shouldn't be doing that, no

[split siren]

If there are 2 variables I need to replicate together and have it guaranteed that they will not be replicated separately, is wrapping them in an Atomic Ustruct the correct approach?

[fathom aspen]

That is if they are POD types

And they are changed at the same frame, or a frame before the frame where they gathered for replication

[split siren]

After rapid googling, do I assume correctly that FVector is not POD since it has constructor?

[fathom aspen]

In Unreal terms, non-PODs are: UObjects and FString (or prolly FText?) FNames

[fathom aspen]

Ah sorry FNames

[split siren]

So pointer would not be guaranteed to arrive in the same frame as the pod counterparts. And that would re-trigger the OnRep function.

[fathom aspen]

Right. OnRep is your friend there

[split siren]

Is there any other way to replicate the whole Ustruct? Or wait for it to arrive completely? I guess something like that has to be implemented already, since we can do RPC calls with ustructs.

[fathom aspen]

Keep track of OnReps and notify server of when they are all called

There is PostRepNotifies but that is at the actor level

[split siren]

Thanks so much for the explanations. How would I know as a client that I have received the whole Ustruct to know when to notify the server? Is there like hash of the ustruct to compare what I have received with?

[fathom aspen]

I don't think there is. Seems like you will have to do it yourself. I guess you can do it at the time you deserialize inside NetSerialize. Check that the data you got is valid and mark a bitflag that you always check if was all marked to fire your own "PostRepNotify"

And on another note, I think if you change the structs properties at the same frame you will get them to replicate in the same packet, regardless of whether the struct is atomic or not. Atomic though guarantees that you never end up in a state client-side that never existed server-side because by nature it replicates the whole struct each time an update to one of its properties is sent

[pallid mesa]

lmao I jut wrote an article about that 🤣

[split siren]

Oh really? Would you mind sharing it?

I would love to learn more

[pallid mesa]

check pinned comments

[fathom aspen]

And I'm too greedy to write and not share

[pallid mesa]

FNames?

[fathom aspen]

The channel was too calm today, I need to write 😔

[fathom aspen]

Yes

[pallid mesa]

wait why

i dont see correlation between the POD concept from C and this

is there a new definition for POD types that... I dont know of?

[fathom aspen]

/**
 * FNetBitReader
 *    A bit reader that serializes FNames and UObject* through
 *    a network packagemap.
 */

They are the "unmapped properties"

[pallid mesa]

why is that? Any reason?

[fathom aspen]

Maybe that's my own terminology

😛

[pallid mesa]

i understand for uobjects

but what's the deal with fnames?

[fathom aspen]

Good question.

legacy reasons?

[pallid mesa]

you can ignore my question if you like, I'm completely asleep X'D

[fathom aspen]

Nah I asked myself the same question, but couldn't answer it so it's fine.

This is the point where I wait for 3rd party to come in

[pallid mesa]

Yes because... FStrings

and FNames...

[fathom aspen]

And things... got complicated 😔

[pallid mesa]

hahaha

yeap that rings a bell

when did it get deprecated?

Any reason?

I see! Makes sense

[fathom aspen]

But I can still say POD just fine in #cpp right?

[pallid mesa]

tbh... I've been stuck in 11 for a long time (outside unreal)

I've been learning modern C++ just recently haha

legacy reasons mostly

same reason ive been using opengl es 2.0

[fathom aspen]

You must have come upon "Effective Modern C++", amazing book that I can't find enough time to read through

[pallid mesa]

its noted down already

Latest I did was a silly exercise with concepts

yes, as I said I've been lately learning it haha

[delicate adder]

Where/how should I set my Character as Autonomous Proxy? Or is the answer never?

[pallid mesa]

you dont need to

[delicate adder]

Well if I don't set it manually, it is a SimulatedProxy, and Gameplay Ability System doesn't let you activate abilities if you are SimulatedProxy 😦

[fathom aspen]

Well SetAutonomousProxy(true); is already called for you in PossessedBy. Why would you do that yourself

[delicate adder]

🤔

[fathom aspen]

Yes, that is a good point to think about

[delicate adder]

Failure to call Super 🤦‍♂️

[still arch]

Quick question, on my character in begin play I server RPC spawn another ACharacter which will act as a "follower" of sorts.
When i try this in game with 1 player it spawns 1 follower, when 2 player it spawns 2, but then when I try 3 players, it spawns 4, and for 4 players 6 are spawned.

I cant really understand why I get this behaviour, anyone has any clue?

[fathom aspen]

Because firing server RPCs isn't reliable in BeginPlay

And in any other event before the actor is possessed

[still arch]

Alright, that makes sense, that was sloppy of me.

[fathom aspen]

That being said, you should fire server RPCs from events like:

1. OnRep_Owner
2. OnRep_Controller
3. Restart
4. AcknowledgePossession

I'm biased to 3

Don't know if that's by chance, or if that's because it stands for my birth month

[still arch]

Thank you, I will read up on all those and find what's best suitable.
Basically, when my character spawns, I want an animation for the follower to play and then for it to spawn.

3 is my birth month aswell, so it seems like a place to start atleast!

[fathom aspen]

Keep in mind that BeginPlay fires on both, server and client

So you don't need to fire server RPCs at all

Just check if(HasAuthority()) and that means you're on server

[fathom aspen]

I'm not sure what that is, but is it something you want it to be replicated to others?

[still arch]

Yes, that's why I picked ACharacter, so that movement gets replicated out the gate. I hope that applies to SetActorLocation and things like that as well. In the future I also aim to be able to "Take over" the follower and fly around as it.

Short answer, yes, it should be replicated.

[fathom aspen]

I'm not sure what you mean by "follower", but it seems like you want to attach it to character's mesh/root

And yeah make sure it's set to replicate and you spawn it server side like I demonstrated before

No RPCs involved

[still arch]

It's a bot, that follows you around and that you will be able to interact with and that will fight with you basically.
Can I attach a Character to an actor?

[fathom aspen]

Oh then you don't want to attach xD

It has its own CMC, as it's a character after all I suppose

And yeah following should be done by BTs and all that jazz

[still arch]

I thought that was smart, to get the movement replicated and for me to implement some kind of posess functionality where I can fly around as the bot so to speak. BT's? what does that acronym stand for? Need to look that up, I was planning to add some following logic in the Tick function on the Character.

[fathom aspen]

Behavior Tree(s)

I mean if you want flying mode then your CMC should support that. I'm not that super fledged with the CMC to say what it entails and what it doesn't. You also got floating pawn movement component, but that isn't networked.

[still arch]

Alright, you've given me a lot of things to research, this is great. Thank you.

@fathom aspen If I do it in Restart and with "HasAuthority" the bot only seems to spawn for the clients and not for the listen server.

Just realized, sorry for pining you.

[fathom aspen]

HasAuthority was meant for BeginPlay, but it should work fine even for Restart

[still arch]

Alright, I'll do some debugging, when I do server RPC I get one extra bot so something is off.

[fathom aspen]

Ah nvm, Restart doesn't fire for simulated proxies, so you won't see the follower spawned for them

Use BeginPlay with HasAuthority

Again, you don't need to RPC at all

[still arch]

Where can I find info on what functions run where?

Or is that something you pick up along the way?

[fathom aspen]

Just trace the function and know when it's called

Exactly, more of an experience than anything else

[tame pier]

Is it realistic to want to start working on simple networking if I'm just now learning c++

with some previous coding experience

So I've heard

Im thinking of just between friends, 3rd person shooter pvp, with abilities and some AI

[short arrow]

Some games can show you packet loss (pretty sure fortnite does) anyone know how it's done?

it shows you in a packaged game.

[fathom aspen]

This should get you walking: https://docs.unrealengine.com/4.27/en-US/InteractiveExperiences/Networking/QuickStart/

I should have checked if it has deprecated stuff, sigh

ShooterGame ftw

[tame pier]

:(

[fathom aspen]

#multiplayer message

No idea why it took me long to find that nasty message of mine

As noted beneath it, UNetConnection has all that packet loss properties

[tame pier]

What about it is really complicated? Just asking as a precaution
Telling the server a player pressed W and then running code based on that sounds simple enough, doesn't this apply to everything else? Bullets etc

or I should ask whats the most complicated aspect in a game like that

[fathom aspen]

Ofc it doesn't. That is one aspect: Input Handling.

[fathom aspen]

There is no such "most complicated" aspect

You can be hit by different level of complexities, and what feels complex for one might be easy for other

[quasi tide]

Yeah - what you're wanting is definitely not simple in execution.

Conceptually it is simple, sure.

To the end player it is simple, sure.

But actually doing it? Definitely not.

[tame pier]

😭

[quasi tide]

Oh I know - I'll just tell the server that I hit the player and pass the player ref. Easy.

Congrats - you have now introduced an easy way to cheat

With AI as well - don't forget that

And abilities.

[tame pier]

well abilities are basically bullets

:p

[quasi tide]

Do you want bullet drop?

[tame pier]

hmm, sure?

[quasi tide]

🙃

[tame pier]

what

[quasi tide]

That's more complexity on top of what you already have, lol

[tame pier]

surely you can just tell the server bullet position

and its dropping by x

[quasi tide]

Absolutely.

And surely I can fake it

[fathom aspen]

But it's easy to server-rewind

[quasi tide]

Yeah - if you're James

[fathom aspen]

I wish MP was easy

[tame pier]

have you done anything similar?

[fathom aspen]

Wondering if that's the reason why #multiplayer keeps being calm

[quasi tide]

It's calm because f*** networking. But also ❤️ networking

At least you know that it is your move as well.

[fathom aspen]

That is too hard for me. I'm making Arma using BP-only and with the help of Udemy + YT

[quasi tide]

You own it. Not some 3rd party server

[fathom aspen]

Yeah how come I forget, I already watched that 8 hours YT video to conclude that

[wintry dirge]

Hey Zlo, I've come across this double speed animation issue today, did you discover any other solutions?

Running Standalone, as the listen server, or Running 2+ clients shows no animation play rate issues

Running 1 client makes the animations play at 2x play rate

[tame pier]

my friends wouldn't cheat (i think) 😭

[fathom aspen]

1. Ensure objects are stably named.
2. Async load stuff.

EZ.

I'm sure someone did, because I can hear asynchronous music playing in the background

Props to ZabirH for that info 😄 #multiplayer message

Host migration you mean?

Because that can be understood as host migration heh

Then that must be some sorcery I haven't learned/discovered yet

And it's funny because it has mmo in it

That he fears to uncover because things... might get complicated

Cool, Laura was right

[uncut atlas]

i know about online subsystem steam and how u can setup player hosted servers (listen servers). does the session interface work on consoles as well (xbox & playstation) to set up listen servers?

[fathom aspen]

It should be

Here's a fun question: Why does an object (non-Actor specifically) persist a seamless travel when outer'd to a persistent object?

Example: Create a UObject, outer it to GameInstance, seamless travel, that UObject persists to the new level

[quasi tide]

Hunter is 100% working on an MMO in UE. Ashes of Creation. Was on my radar like 2 years ago, but kinda just dropped off 😅

[fathom aspen]

Hunter you should work harder to bring it to Duro's radar again

I have faith in you

[quasi tide]

Well it dropped off because it was in like paid early access alpha, but the price was too high for my tastes.

So I was just like, ehhh - I'll wait n' see.

Wizard gameplay needs to be fun for me to enjoy it though 😅

[fathom aspen]

I watched a trailer of it a while ago and it was fun. Should prolly watch gameplay footage and see how it goes

[still rampart]

Real question though is that one of the benefits for Lauras Ue5coro plugin?

I havnt used it yet but Ive been considering it

Scratch that I got confused on which plugin I was talking about

[fathom aspen]

UE5Coro has nothing to do with that heh

Unless @whole grove made sure it does by the grace of dragonHell

[quasi tide]

Coro just makes doing coroutines in UE5 easier/possible.

How you decide to use it is completely up to you

You must be using C++20 to use it though.

Because it relies on the coroutine stuff in C++20

[fathom aspen]

Oh I'm on phone and I literally forgot what 2) was lol. I see now how they related to coro xD

[lilac drift]

I've been working on a multiplayer game for a few days and am working on my respawn function. Currently I have it set up to create a new first person character at a spawn point. How can I make my possess function run on the server but then pass my client's player controller through to the possess function?

[rose egret]

how do I get previous value in BP OnRep_ ? is it possible ?

[upbeat basin]

I guess it should be possible to add a param to your OnRep fn with the variable type which should give you the old value

[upbeat basin]

Ah the question is on BP, I don't know about that, sorry

[upbeat basin]

Are you asking how are you going to find out which controller you want to possess new actor with?

[winged badger]

whenever OnRep fires you can store the Value into OldValue

and OldValue will be pre "replication" value

[upbeat basin]

Is this being the parameter or something else that I'm not aware of?

[winged badger]

a normal variable in that blueprint of the same type

its ugly, but hardly more so then BP OnRep is

[upbeat basin]

Oh you mean holding another variable for the old value, I see

So still no builtin support for it on BP right?

[winged badger]

BP doesn't even have OnRep

its a property changed callback, not replication callback

you can set the value locally on client and watch the OnRep fire

so i wouldn't hold my breath for an overloaded blueprint replication callback function anytime soon

[regal geyser]

When 2 characters with capsule radius bump into each other, there is a good chance that they will get "stuck" meaning one clients needs to avoid the other one. Is there a way how I could implement "slippery" capsule radius, meaning when 2 clients bump into each other they will just "slide" around each other and continue in their path?

There's RVOAvoidance which pretty much does what I need, the issue is that this doesn't work (If i'm correct) in multiplayer games, because clients will suffer from severe network corrections.

[chrome bay]

RVOAvoidance is for AI anyway, so it doesn't help MP. Technically characters will slide around each other, but because you get updates about them at different times, it's very likely they could just be snapped into each other. There's not really a closed form solution.

The simplest method is to make players ignore each other when moving, or you could try adding a thinner capsule which blocks pawns inside the existing ones. You could also force characters which are overlapping after moving to ignore each other.

[elder sable]

I try to replicate an array of actors in my gamestate with a replicatedusing function, someone told me the array shoudl be fully replicated but some actors are null in the array. I added the gamestate as owner to those actors, and set alwaysrelevant et replicated in the ctors, did i forgot something ?

[chrome bay]

It won't be fully replicated

[fathom aspen]

The OnRep will fire each time one of its elements replicates

[elder sable]

Oh, when can i know when it will be ?

[chrome bay]

Zero guarantee the array will be full of valid pointers, even if they are always relevant

You have to check each time OnRep is called

[fathom aspen]

There is nothing like this OnRep fired -> the array has fully replicated

[chrome bay]

OnRep will also be called when it changes size - it could have no valid ptrs

[elder sable]

Mhh is that better to use rpc then ? Looks annoying

[chrome bay]

no it's not

[fathom aspen]

Golden rule time

[chrome bay]

State = properties

RPC = events only

[elder sable]

So i have to loop on the array to check element validity every time ?

[chrome bay]

yes

[elder sable]

😦 ok

[chrome bay]

But you should expect to do this whenever you're dealing with pointers to other objects

[elder sable]

Mhh

[fathom aspen]

James, what do you think the reason FNames are assigned NetGUIDs? Vori asked me that last night and I couldn't answer lol

[chrome bay]

I don't think they actually are - last time I checked the only FNames that replicate via ID are the hardcoded ones in names.inl or whatever that file is

But if I had to guess I'd say maybe it's a legacy thing for package names

Though Epic did plan to add this, like 4 years ago

Would be nice tbh - so many things could benefit from FNames replicating via GUID instead of string

I think Coalition added that

[fathom aspen]

I see, yeah makes sense. Thanks!

[scenic turtle]

Hello everyone, I would like to know how to do that after selecting a particular character to spawns on client side and then we travel to the server map, we spawn as that character and not the default one. (as It currently happens). Should I store this selected Pawn actor in the Game Instance or the Game state or? Thanks for the help.

[upbeat basin]

Are you trying to keep your character that spawned on client when you connect to server? Sorry and correct me if I'm misunderstanding. But if that's the case I don't think you can keep a client side created character to keep and use as replicated character

My recommendation and experience was setting the Character as None (so it won't be created automatically) and spawning it with desired class at desired time from server

[jade patrol]

hey, is it possible to test reconnection of the client in pie? i tried open 127.0.0.1 from console but it does not work

[upbeat basin]

I was using OpenLevel first and then travelling to localhost again to produce this situation but there might be easier ways to achieve the same

Also if initial connections are okay for your case, it's possible to add clients during PIE runtime

[jade patrol]

oh, how can i do that?

[upbeat basin]

Under the editor preferences

You'll get this Add Client button during PIE on this panel when you enable it

[scenic turtle]

Sorry, about that, might explained the situation in a bit over complicated way :D, so when we launch the app we are not connected to the server yet, we choose our character to spawn as WHEN we travel to the server map, so I am looking for something that will store that decision for me and I will be able to spawn on server map with the desired character.

Because currently it will just spawn me as the default character

[upbeat basin]

I wish we could set the number of clients to 0 and let dedicated server run its own from PIE as well but I guess that's not possible

[jade patrol]

that's awesome

[upbeat basin]

Oh so you need a way to carry your decision to server and make server spawn that character for you?

[scenic turtle]

yes correct, I was reading about the game instance or game state that I should store this chosen character in either of those but not sure how to do it

[upbeat basin]

I see, if that's the case GameInstance is what you're looking for. It's a singleton that persist during the entire duration of your running game client. But it doesn't replicate. So it can be used to store values between levels. That's what you read I believe

Once you're connected to server you'll need to send that variable to server with an RPC though. GameInstance doesn't replicated, it only exists for each standalone game instance (hence the game I guess)

And then you'll need to spawn the character and possess on server

But be aware that this is not the most secure way to do as you tell server what to do from your client. Someone can hack your game to select a character that they don't own, for example

[fathom aspen]

https://wizardcell.com/unreal/persistent-data/#how-to-disconnectreconnect

[fathom aspen]

As Layso stated GameInstance works great, but I'm more biased towards a LocalPlayer subsystem. You might want to check the latest message in pins 📌

[upbeat basin]

Ah I was questioning if it was persistent between levels just a few days ago. Yes using this would be a more "proper" way I believe

[scenic turtle]

Okay will check the pins and will try to work with the GameInstance class, so basically I would have to forward that variable to the GameMode in the end, right? Sure WizardCell, thanks for the input also.

[fathom aspen]

GameInstance is, pretty much like GI subsystem or LP subsystem, but I prefer having a centralized LP save subsystem

Also that's if you are hard traveling, if I'm seamless traveling I will be using PlayerState::CopyProperties

[fathom aspen]

Correct. Though you save the character in GameInstance locally (client-side usually)

GameMode is server-side tho

So retrieving GameInstance in GameMode will end up retrieving the server-sided one sadly

[scenic turtle]

Right, so how would I get this character variable to the game mode through Player Controller?

[fathom aspen]

Correct

You got the plot

[scenic turtle]

GameInstance-> Player Controller-> Gamemode then

[fathom aspen]

Pretty much yeah

[scenic turtle]

okay, will figure it out then thanks so much for the help WizardCell & Layso!

[verbal tendon]

Has anyone done custom non game-related UDP connections before through UDP? I'd be curious what classes were used for handling the connection as well as data serialization on both the sending and receiving end. I'm designing a plugin that connected from the packaged game to a plugin that runs inside the editor

[random nymph]

Every now and then some of our clients get this repeated in their log file when failing to join a multiplayer game with IP
[2022.11.07-12.29.35:440][ 21]PacketHandlerLog: FAESGCMHandlerComponent::Incoming: received encrypted packet before key was set, ignoring.
Any ideas?

[lilac drift]

I’ve already got that part down. My issue is that I can’t make the client that died possess the new character because it’s a server only function

[upbeat basin]

Well in that case you need to call it from server

That's why I asked if you're asking how are you going to find that controller on server, because there is no way to do it from client

[grizzled stirrup]

Asked a few days ago in #online-subsystems but no response, thought it may be worth trying there. It seems sessions can be destroyed without players being kicked and the match goes on without any issue. Does this mean that sessions are purely used to get other players to join your game, and once they have joined (and assuming joining in progress isn't intended), sessions can be destroyed without affecting the outcome of the match?

I am mainly asking to try and get around what seems to be a bug: if I disable join in progress once a match has started, but after a match I re-enable the allow join in progress bool and update the session settings, new players still can't join. However if I destroy the session back in the lobby and create a new session that allows joining in progress, both the players from the previous game / session stay in the lobby AND new players can join

It seems to all work fine now I'm just wondering if this could cause any issues that I haven't encountered

[chrome bay]

Sort of makes sense really, the session exists mostly for the online backend side of things. I expect if you kill the session, Steam would no longer show what server you are in for instance.

[grizzled stirrup]

Ah that's great! Yeah for some reason I imagined it being tied to the listen server connection

So I imagined if the session was destroyed, players would be kicked

But doesn't seem to be the case which means my workaround here is likely fine

[chrome bay]

It might be diff platforms behave differently but I honestly don't know. There's probably a lot of "bad" stuff that occurs if you're connected to a server that you aren't actually in a session with

But I've no idea, rather not find out 😄

[grizzled stirrup]

I wish the update join in progress bool thing would work as intended so I don't have to do this 😄

But I'll keep an eye out on strange behavior on other platforms

Since players that are brought back to the lobby when the current session is destroyed and the new one is created aren't technically in the session anymore

Which actually creates other problems since it could mean too many players join a lobby.... ok need to find another way around it I think 😄

[pine reef]

Hi I'm studying multiplayer in a top down template and what I'm trying to achieve is to replicate that cursor movement in order that all player could see all cursors. The setup I did, I think it's setting the same position to all instead of respecting each user

[unborn solstice]

Hi, I try to create multiplayer game. I have a problem
When I want to kill enemy from server - its okey, but from client - its work only at client.
Replications in enemy blueprint included. When I debug my code, I release that the problem is when I want co cast my weapon blueprint to enemy blueprint - its does not working. But I can cast to third percon character from weapon blueprint. How to make when client kill enemy - server know about it.

[pine reef]

I was watching this video series, and in one of them he explained about it, that you need to be owner of the object to call server function from client

https://www.youtube.com/watch?v=4Tnbf44NjXo&t=819s

[verbal tendon]

What you're probably missing is that you need to communicate the client's cursor to the server, and then the server needs to multicast the information to all clients, and you do that for each player so every player has a different cursor that is displayed, but ignore for the local player ( because you already see and control your own cursor )

[fathom aspen]

GetPlayerController(0) spotted

[pine reef]

and how it should be?

[fathom aspen]

You want to use GetController

And gate tick with IsLocallyControlled

[fathom aspen]

Never use GetPlayerXXX functions again

Not in multiplayer at least

[pine reef]

thank you

how Im going to connect those?

[fathom aspen]

Literally just replace GetPlayerController(0) with GetController

Ah you want to cast to PlayerController

[pine reef]

alright

[fathom aspen]

Damage is handled server-side (authority) so you want to check health and destroy the pawn/character in question

And you're good to go

[pine reef]

it worked thank you @fathom aspen

[dawn verge]

Can anyone help me out this scenario?
I'm trying to develop a multiplayer persistent world game with a dedicated server and i want a service that manages player data and functions like logging them in and their last positions and their inventory.....I need some guidance as i have searched about online but i only got how to do that for peer to peer games but not for dedicated servers.... Can anyone help? Please DM

[fathom aspen]

Have you checked last message in pins?

[pseudo gull]

Hi everyone! i´m considering getting this https://www.unrealengine.com/marketplace/en-US/product/38b887ee46ef471ebdb93d8cfb2ad96a
to make it work in a multiplayer environment so the rest of the clients can see what is being shared. By default this is not replicated, so my question is if is it possible to replicate a media source?
Thanks in advance!

[fathom aspen]

#multiplayer message

tl;dr not going to be an easy task

[pseudo gull]

bump, wonder how most of the apps like virbella, spatial , or bigscreen out there got it working

[fathom aspen]

Because they have a whole team dedicated to that and again because it's possible.

[unborn solstice]

But how to do damage, when I have blueprint for my weapon and for my enemy and I can't to cast to enemy from weapon?

[pine reef]

oh my bad, it's not fully working yet. the cursor from server is replicated, but the client is not

[fathom aspen]

Wrong reply, and your terminology is nonsensical. This is the point where seeing relevant code becomes crucial.

[fathom aspen]

What is cursor to world property

How do you set that?

[pine reef]

sorry, I dont understand the question

the cursor is that decal from top down template

[fathom aspen]

"Curosor to World" property that you supply the server RPC with

I just want to see how you set that property

[fathom aspen]

Oh ok

Are decals stably named? They are if they are added through the SCS

[pine reef]

is there a chance that this cats is failing when is client?

[fathom aspen]

That's the question you should be asking the compiler

Or debugger**

Debug

[unborn solstice]

This is my code. And problem is when I cast to BP EnemyAI, when is client that cast only in client

[fathom aspen]

Ok let's start with ditching GetPlayerCharacter(0)

#multiplayer message

[fathom aspen]

With the cropped screenshots I have no idea what class that is

[unborn solstice]

this is the weapon, what spawn at the begin play for the player

[fathom aspen]

Then when you spawn the weapon you want to assign the character as owner

[void dagger]

I am working on a project that is built on top of the Collab Viewer template. I have added a comment list to store all annotations created, display them to all users and also have the ability to delete annotations and have them delete everywhere for everyone. I was able to succesfully add these annotations to the server and replicate them to the client, but am having some issues when trying to delete the annotation from the list.

It is meant to be deleted when the plater click on the 'x' of the BP_AnnotationText scene component. Therefore, whenever the player clicks on the 'x', it loops through an array that stores all annotation created and finds the matching annotation and BP_AnnotationText by comparing their comment entries. The problem arises when I try to set a variable that stores the specific annotation reference that has to be deleted. I am doing this the same way the Collab Viewer template sets variables on the sever for every component necessary in BP_AnnotationText, but when it reaches the event that sets the variable 'AnnotationToRemove' it reaches as 'none', How can this happen if were passing it as soon as it finds it.

Below I will attach screenshots of the process I just explained.

Image 1: loops through array and finds annotation to delete, then returns it.

Image 2: function in image 1 and 3 is executed when player clicks on 'x'

Image 3: AnnotationToRemove is set on server (this is where the variable is being set to NONE.)

Image 4: finds annotation to remove and executes (at this point variable is obviously none since its not being set correctly in image 3).

Thank you.

[fathom aspen]

And from the weapon it's as easy as saying GetOwner to get the character @unborn solstice

[void dagger]

please heelp

[vestal bobcat]

Could someone explain to me why, if an actor is placed in the level by hand (through the editor before runtime) is considered unowned ? I was expecting such actors to be owned by the server, but they are server owned only if spawned by a server RPC.

[fathom aspen]

Owner is an actor. An actor is never owned unless assigned an owner. Server-owned actors are actors that their owner is anything but an actor that links back to a UNetConnection. Any other actors (null-owned) behave pretty much like their server-owned counterparts.

So null-owned actors or server-owned are under the server-owned umbrella

[vestal bobcat]

ok thanks for the info. However I stumbled upon some differences between the two especially with RPCs. A server RPC from unowned actor was dropped, if invoked from a client for example.

[fathom aspen]

Even if server-owned, it will still get dropped.

Same behavior

[vestal bobcat]

ohh you are right, I missed that part of the table.

[pine reef]

so back to my issue, this video shows what it's happening

I just need the cursor from client to replicate

[elder sable]

Replication is server to client

You want to send the cursor data to the server ?

[pine reef]

I want that all player can see all players cursor

[elder sable]

Client send data to server and then the server replicates, you need to add the first step

[pine reef]

can you be more specific in where I need t change the code to achieve this behavior? cause from my understanding it's already doing it, I'm sorry that I dont get it

[grizzled stirrup]

Each local player controller is only available on the local machine (or the server) so your multicast would fail (at the part where you are casting to PlayerController)

[pine reef]

ok

what is the right way to handle this situation ?

[elder sable]

Use something replicated to all clients, PlayerState for example

[grizzled stirrup]

I would periodically replicate down the cursor location as a RepNotify variable and have the client constantly interpolating the position on tick

[flint hollow]

i havent even touched network stuff but i wanna ask anyway. are ragdoll and procedural physics animation at all feasible over network? any session size.

[grizzled stirrup]

Yes but lining them up can be very difficulty. You can have them simulating locally though if differences in the simulation are acceptable

Though I know Chaos is now running differently to PhysX in that regard so networked physics may be easier

[glad escarp]

Alright. Maybe a weird/complicated question but here goes:

• I have a main menu map which pulls up, as you may have already astutely guessed, my main menu.

• From there, I have a "Host Game" option which starts a session without loading a new map.

*My goal here is to press host game and then it acts as a lobby. Players join and ready up (this functionality is already programmed).

Is there a way to set the listen console command when the map loads in? Or should I be looking to open a new level that is listening when the player clicks on "Host Game"?

[grizzled stirrup]

You can have your game open to an empty map that instantly then opens your lobby level with the ?listen argument, then you can do hosting without travel

[flint hollow]

thanks and im not sure what would be feasible. im always contemplating some character animation being resolved with physics for a few things. At this stage its mostly about should i bother exploring physics if the prototype is for network.

[latent heart]

Though you don't really want to start accepting incoming connection requests if you aren't hosting a game.

[elder sable]

You can use beacons for in-menu lobbies

[latent heart]

Even if you later reject them.

[grizzled stirrup]

You won't as long as you don't press the host button

Opening a level with ?listen doesn't do any sesssion stuff

AFAIK at least

[elder sable]

So you only listen when the host start the game

[grizzled stirrup]

You'd need to create a public session before anyone could join

[latent heart]

What I mean is, no matter if you have a session open or not, opening with ?listen starts listening for connection requests to join the game.

That's not a good thing.

[glad escarp]

This makes sense to me.

[grizzled stirrup]

But would anyone actually be able to join if a session wasn't present? I do it purely out of convenience as I too have a lobby level that you load right into and it's a bit of a pain to have to travel to a new level when starting multiplayer stuff

But I'm curious as to ways this could backfire, I can't join or see other players' games until they create a session

[latent heart]

It's akin to "Hey, I'll run my webserver even though I don't need it because I can't be bothered to turn it on or off later" which is absolutely not a security risk.

[grizzled stirrup]

I mean if it's a multiplayer game and you'll be playing via listen servers I'm not sure this is an issue is it?

Are you broadcasting or communicating this anywhere? I thought it'll have zero effect on bandwidth or anything else and just if you were to then create a session you could advertise your game

[glad escarp]

Thanks Kyle that totally makes sense. So let me back-brief to make sure I'm understanding the flow.

1. My main menu level loads. (there is no session and the level is not listening yet)
2. My player clicks on "Host Game"
3. This loads an independent Host Game Level which is listening and which also creates/adds to viewport, my host game widget
4. From there the host can configure settings and launch the game to server travel all the players in the "lobby" to the selected map.

[latent heart]

It's a security concern. Nothing to do with bandwidth.

You shouldn't start opening sockets if you don't need to.

It's absolutely awful design.

[grizzled stirrup]

Is it possible to load into a lobby and invite friends without beacons and without traveling though? Just doing it out of convenience

[elder sable]

Do you need a lobby level or is it just a menu ?

[glad escarp]

No idea how to do this.

[grizzled stirrup]

Beacons are complicated I would stick to listen for now unless you want to get your feet wet, the steam party plugin is a good place to start

[elder sable]

Well, you can beta test my lobbysystem :p

[glad escarp]

It's just a menu. Basically I have a main menu widget that pops up in the default game map. I have Host, Join, Settings etc. When a player clicks Host, it brings up a Hosting widget which has ready up functionality and map selection etc.

[grizzled stirrup]

Wouldn't most multiplayer games that use listen servers also have this security concern though? I had thought Steam sockets is fairly secure with the relay stuff. I'm just trying to imagine how this could be exploited, I can move back to a traditional main menu and only travel when sockets are needed but I have a drop in / out kind of system and it sucks to make players quit and reload an autosave if doing multiplayer

[latent heart]

It's not not opening them when you don't need them, not about not using them at all.

Just because you can't think of a way to exploit them doesn't mean there isn't one.

And nobody may ever exploit them, but that isn't a reason to be lax about it.

[grizzled stirrup]

Even so, if it's a drop in / out game, it makes life much easier for players to just invite friends at any time rather than having to leave, hard travel and then restore auto saves before they can join

[pine reef]

I tried the approach of using rep notify in the cursor location, but in the end I have the same result

[latent heart]

You don't store passwords in plain text "just because you're probably never going to be hacked"

[glad escarp]

Is your lobby system specific to one OSS? I'm using EOS, utilizing Redpoint's EOS plugin.

[latent heart]

If you want your game to allow hot joins like that, sure, leave the socket open. But usually it's an option for games.

Single player vs multiplayer.

[grizzled stirrup]

Yeah I'm just saying that by playing pretty much any multiplayer game with listen servers, the majority of your time will be opening those ports or joining other sessions. I get that it'd be optimal to only open them when creating but that can add a lot of friction to the join process

[latent heart]

And it's definitely not required when you're just sitting in a menu.

[grizzled stirrup]

Yeah I may look into a better system and force players to travel when hosting in that case

[latent heart]

Tbh, the real issue is UE requiring you to re-open the map to change netmode if that's even true.

[grizzled stirrup]

I haven't found a way to get other players to join without opening a map with ?listen but I'd LOVE to be proven wrong

As it would make life much easier

[latent heart]

Yeah.

[glad escarp]

Yes. That's what I was hoping there was a solution for. I just want to change the net mode to listen when I click on host game and change it back if they exit the hosting menu.

[latent heart]

I'm not saying it's easy or desirable to have to manage sockets, but you should at least try to be careful. 🙂

[elder sable]

It's generic

[grizzled stirrup]

Yeah I hadn't really thought about it, I had thought about it more like, open the level with multiplayer in mind should players choose to play that way or not

Rather than have to figure out separate paths for single and multiplayer

As mentioned, having to deal with auto saves and hard travels mid game is frustrating for players

Who may just want their friends to join the action without interruption

[latent heart]

Absolutely.

Usually thjat's just handled with something like a private / friends only / open type option when you start a game.

[grizzled stirrup]

Yeah! In this case you load into a hub so I suppose I could make players start their session as a multiplayer session, re-travel to the hub and then start playing

Then they could do drop ins with less friction

[latent heart]

https://forums.unrealengine.com/t/change-to-listen-server-without-map-change/36556/3

Looks like it requires an engine change for full support

But you can do it once without issue.

[grizzled stirrup]

No way that's great

Thanks for the find

[latent heart]

Np

[glad escarp]

Wow. I've even google searched "Unreal Engine switch to listen server without loading new map" and didn't find that. You're a wizard

[grizzled stirrup]

Looks like no engine modifications needed at least from what I can see

Seems to be just 2 func overrdies

[latent heart]

unreal engine start and stop listening for connections without changing map

😛

[glad escarp]

Much appreciated. I'm gonna try to implement this.

[latent heart]

Super interested to know if that works!

And maybe if you need to maybe make a custom netdriver...

[glad escarp]

If only I were at that level with my coding skill.

[latent heart]

By "custom net driver" I mean "extend the default netdriver, override a method and copy+paste the code, but take out the line that says 'you can't do that twice'" 😛

[glad escarp]

hahaha. I follow you now.

[latent heart]

That's seriously half my current project. I swear 99% of the engine code makes silly assumptions.

[glad escarp]

I suppose that's the main drawback to using a robust framework like UE versus a custom built engine.

[safe iris]

Hey, im new to networking and having issues with my networked point lights not displaying the correct color assigned to them, what can i do about that?

hmm thats interesting

why wouldnt just a literal variable work?

so FLinearColor instead of a replicated variable

doesnt really make sense to me

[quasi tide]

Networking is largely a lie. You tell machines across the network the current state of the game and then the code that gets executed makes it look like they are in sync.

It needs to be replicated so the light on Machine B shows the correct color.

Just setting the color on one machine doesn't mean it'll change on another.

You have to tell it to do so.

OnRep variables is one way (and the correct way in this case) to accomplish this.

[safe iris]

hmmm

understood

let me do that right now and update if it works

[fathom aspen]

(It works, you're welcome™️)

[safe iris]

i know but like im not really getting how im supposed to update the variable client side

void AEnterTheVOIDPawn::OnRearLightColorUpdate()
{
    if (IsLocallyControlled())
    {
        RearLightColor = FLinearColor::Red;
        GEngine->AddOnScreenDebugMessage(-1, 5.f, FColor::Red, TEXT("CLIENT UPDATED VARIABLE"));
    }
}

is locally controlled gets skipped completely

or am i supposed to do this some other way

[fathom aspen]

Because you shouldn't be checking IsLocallyControlled

It's meaningless

And if you do you prolly wanted OwnerOnly replication condition

And that's not what you want

On server set a replicated property of FLinearColor -> OnRep fires -> Get the point light and set its color to the repped down color

[safe iris]

ok so i have to do RearLightColor = replicated value that i have to get from somewhere?

[verbal tendon]

Check the pinned messages and start reading some explanatory material

You're struggling with the basics, there are plenty well documented tutorials on this topic

[safe iris]

ive been looking at this https://docs.unrealengine.com/5.0/en-US/multiplayer-programming-quick-start-for-unreal-engine/

[fathom aspen]

...from server, right

[safe iris]

i suppose ill just keep looking

[verbal tendon]

Please look at the pinned messages. Not Epic's documentation

[safe iris]

oh, okay

[fathom aspen]

And considering RearLightColor magically links to the point light color

[verbal tendon]

It's also easier to play around with this in Blueprint to get a grasp of how networking works in Unreal, and then look at doing it in C++

BP allows you to fail fast and easily, once you really understand how replication and networking works, you then increase the difficulty by doing it in C++

[safe iris]

understood

thank you

ill try my best

i have to do it in c++ tho so its gonna take time 💀

[glad escarp]

So far I'm getting "Net Driver Already Exists" errors in the 2 ways I've tried to implement this. Darn

[safe iris]

IVE DONE IT

IVE DONE ITTTTTTTTTTTTTTT

YESSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS

😈

[fathom aspen]

CONGRATSSSSSSSSSSSS

[glad escarp]

So I'm wondering if I'm just beating my head against a wall for no good reason. The easiest flow for a listen server lobby seems to be like this (please correct me if I'm wrong):

1. Player clicks "host game"
2. We open a lobby map with ?listen
3. In this new lobby map, we have a menu that only shows up if the player is the server which has options (or if I want to make it interactible actors in the map, I can just leave them default because if they aren't replicated, only the server player will be able to do anything with them.
4. Then when players are ready and the host launches the game, we server travel all players to the selected map

[fathom aspen]

Congrats you passed the "listen server class"

[glad escarp]

Lol thanks. Well. I'll redirect my energies then to get this working correctly.

[latent heart]

I would have the menu appear for non-hosts too so they can see settings... but not change them.

[glad escarp]

Right. That makes sense. I would just replicate visual changes and disable functionality if they aren't the server?

Or let's say instead of a menu, I want to have like a ready-room type deal with a map on the table. The host selects an area on the map to deploy to and then I would replicate the visual changes that show what the commander highlighted.

[latent heart]

Something like that, yes.

Replicate the "start game info" struct or whatever

[glad escarp]

ah. ok that makes sense.

[proven fog]

Why would my actor have a different transform when I join a dedicated server, instead of standalone?

[fathom aspen]

Because some other client did so before you joined?

[proven fog]

It's just me

[fathom aspen]

Thought I'm the only one capable of doing sorcery, turned out that dedicated servers have already passed that milestone 😔

[proven fog]

Actually the blueprint sets its rotation a couple of seconds into BeginPlay

The door is rotated like it should be, the door frame is what has the wrong rotation, but it should already be detached...so I think the detachment is happening on the client after the rotation

[fathom aspen]

This is the point where showing code becomes crucial, but from the sounds of it yes it's something like what you said

[proven fog]

Yeah it was just a rotation that happened on the server before the client connected

[peak sentinel]

@valid imp what decorator?

[fathom aspen]

Decorator is an AI term

[peak sentinel]

but BTs are mostly unrelated in multiplayer context so it confused me

[fathom aspen]

They meant to say RPC type I guess

[quasi tide]

They are 100% talking about RPCs

[fathom aspen]

The answer to your question is because it's not needed by Epic @valid imp

[peak sentinel]

general way of doing it is just having a non RPC function and calling that on both client and server rpc

[fathom aspen]

Pretty much the same reason why TMaps are not replicated yet

I like how we answering the OP without them taking part in the conversation

[peak sentinel]

and why category sorting is not done etc etc

[peak sentinel]

they are replying in cpp though 😄

[fathom aspen]

Ah so we are talking via beacons now?

[peak sentinel]

oh thats something i never studied yet

[quasi tide]

The engine is so vast 😅

[quasi tide]

'Tis a shame that they're not either. Dictionaries are so useful 😭

[valid imp]

Aarg you are answering here!

[quasi tide]

Yeah - multiplayer stuff being answered in #multiplayer. Wild.

[peak sentinel]

go back to #cpp jk

[valid imp]

Wait, how do you call @twin juniper things? Annotations?

[fathom aspen]

Wait dragonHell told you that? When are they fixing dormancy in BP then?

[peak sentinel]

yeah just like that 😄

[quasi tide]

Annotations or decorators are fine. But in UE, they're not either. They're macros.

[peak sentinel]

Decorator == property specifier btw.

[quasi tide]

There is no @ syntax for UE

[peak sentinel]

#define @

[quasi tide]

Which is what UFUNCTION()'s are

[valid imp]

Woops

My mind is tricking me

[peak sentinel]

I'm lost btw, but Duroxx seems to understand the questions

[quasi tide]

UFUNCTION(Server, Reliable) is still a macro.

[peak sentinel]

so I can leave

[valid imp]

Alright, UFUNCTION is a macro, good. I apologize for the confusion, I spent too much time doing TS at work.

CodeGenerationMacroAnnotationThingy then

[fathom aspen]

Because I need someone for the fun

[quasi tide]

Playing multiplayer is fun. Making multiplayer is the exact opposite.

[valid imp]

Is it fun writing your own CGMATs 😄 ?

[fathom aspen]

#cpp message

[valid imp]

I just want to do less boilerplate like this:

    void ServerOwningMyFunc(); // Call MyFunc(), and if not locally controlled also call ClientMyFunc()
    UFUNCTION(Client, Reliable)
    void ClientMyFunc(); // Will just call MyFunc()
    void MyFunc();

[thin stratus]

Multiplayer gave me depression

[peak sentinel]

but... you wrote the compendium

[quasi tide]

compendium bible

[peak sentinel]

its possible with meta and IScriptGeneratorInterface

but still pain

and confusing for new teammates to adapt

[fathom aspen]

This one saved me from depression tbf

[peak sentinel]

i love bread

[thin stratus]

[valid imp]

If I wanted a nice little project with plenty of teammates I'd do something simple and singleplayer 😦

[thin stratus]

I think it's too late for that haha

But, the good thing is, I'm now in the position to make my employees suffer through Multiplayer, so I don't have to.

[quasi tide]

Progress

[peak sentinel]

check LuaScriptInterface then to see example of how script generator interface works, it lets you add custom code to generated files based on what UHT parsed

but to make UHT parse custom specifiers that are not meta, you gotta fork

[fathom aspen]

If you want less boilerplate then please make OnReps call auto on servers

[valid imp]

Cool, I'll check that out. Thank you 🙂

[fathom aspen]

I will make sure to upvote when you PR

[peak sentinel]

there is also a plugin named UnLua might give more insights than LuaScriptGeneratorInterface thing

[twilit radish]

"LGTM 👍 " - as he glances over it for a whole second 😛

[thin stratus]

I just want less boilerplate code overall. The amount if sh*t to write if you want to keep proper access restriction of variables

[twilit radish]

Meta=(AllowPrivateAccess="true")

😄

[thin stratus]

I need UHT to just generate me some public getter I can implement if I want

And Setter

[fathom aspen]

I kept saying I want less boilerplate until I discovered GAS

[thin stratus]

HAHA

That shit fest

[fathom aspen]

I'm dead, that was quick

[quasi tide]

https://tenor.com/NZqZ.gif

[twilit radish]

There's a reason Laura is the Microsoft CEO of programming.

[thin stratus]

*despression²

[peak sentinel]

recently I thought C++ involves more boilerplate than an average Java code.. which is called boilerplate programming language these days

[twilit radish]

Where can I learn this power?

[thin stratus]

@fathom aspen GAS made me finally create an internal Plugin that exposes all the stuff that I need in almost every project

[peak sentinel]

ComposableGas

[thin stratus]

SaltyCore

[fathom aspen]

Release to marketplace and see peeps spamming the purchase button

[peak sentinel]

Does it basically include initial boilerplate stuff in a single module?

[thin stratus]

It basically has almost all GameFramework classes with all the extra code that one might need in BP + all the boiler plate Code for GAS, and DataAsset stuff

[twilit radish]

Minecraft plugin name flashbacks

[thin stratus]

Just not Game Specific things

[peak sentinel]

I thought of that too, though was too busy and I hated gas back then so I gave up before starting.. But I guess I'm going to have to create one soon

[thin stratus]

Like, right now you can basically create LazyLoaded GAS Character or Actors just by adding the Plugin.
Only thing I haven't added yet is some automated way to add ini entries

Removes a ton of mindless code work

Specially all those AbilityTasks and AsyncTasks that GAS kinda needs

[thin stratus]

It makes more sense if one looks at the company name

[twilit radish]

I know. But still flashbacks 🤣

[thin stratus]

hehe

[peak sentinel]

btw since you mentioned -- essentially a #gameplay-ability-system question but since you are guru -- is it just me or most of the ApplyRootMotionVelocity tasks are.. incomplete?

like only one of them works, rest of them has empty tick function or just dont work

[twilit radish]

We should all make a company together named "Unreal Slackers & Co", make a MMORPG, fail horribly and then run away with the kick starter money for the game. ~~Also sorry if I'm being way too off-topic. Goes towards #lounge ~~

[fathom aspen]

I saw this last night:

//TODO: This is still an awful way to do this and we should scrap this task or do it right.
void UAbilityTask_MoveToLocation::TickTask(float DeltaTime)

Really encouraging

[peak sentinel]

oh yeah, that was hilarious to read

[quasi tide]

And they never went back and fixed it

[fathom aspen]

Butbutbut they will after they make the fortnite skins

[verbal tendon]

Are you executing it in BeginPlay on both client and server?

[fathom aspen]

Pretty sure they did

If Manny/Quinn could give daily reminders to gate with authority and use OnReps

[verbal tendon]

That would probably explain the observed behaviour. Client doing BeginPlay logic when they join the server, resulting in dev looking confused 😄

Every time I find one of Epic's TODOs I lose a little faith in humanity, ngl 😂

[quasi tide]

Meh - UE is still the best 3D engine available to us peasants. By no small margin either.

[fathom aspen]

Ok then your punishment is to Livecode 1000x starting now

I should have told you to convert all your cpp structs into BP ones 😔

[stone niche]

Hi, I am running a dedicated server for a multiplayer FPS. After just over two hours without restarting or changing a level, I get the server hitching for 250ms every 24 seconds.
After investigation I found this starts at 8192 seconds server time, reload the level, server time starts back at zero, all fine till 8192 seconds then the movement corrections start again.
This does not happen in PIE, only in Development and Staging releases.
Any ideas if this is a known thing? it seems kind of specific as 8192 is a power2 number.

[hexed pewter]

I wanted to test joining/creating multiplayer session from 1 computer using oracle virtual box, but I have this issue where virtual machine only supports up to 256 of vram. Is there any way around this, should I use different program for creating virtual machines?

[fathom aspen]

laughs in double

[stone niche]

4.27 and 5.0

[fathom aspen]

Wow, 5.1 is our savior, I can't count the number of bugs they fixed

[peak sentinel]

do double even replicate

never tried

[quasi tide]

Yup and they're depreciating classic input system. So better get up to speed with #enhanced-input-system

[peak sentinel]

what

[fathom aspen]

But I still need that to trigger the old damage system

[peak sentinel]

#enhanced-input-system scares me

[stone niche]

Thanks, I'll give it a try, was waiting to 5.1 full release for some other fixes when they broke non-seamless travel.

[fathom aspen]

They screwed seamless too, so it's fine

[quasi tide]

I'm indifferent about #enhanced-input-system. On one hand, I like the new stuff. On the other, I don't want to learn another darn thing, as well as make my input be asset based.

[peak sentinel]

inputs are asset based now?

[quasi tide]

Your mapping, yes.

[peak sentinel]

offtopic but your twitter banner is hilarious 😄

"designing scalable experiences for large player counts"
solution: ||kill them||

[olive kraken]

Steam doesn't allow no-seamless travel, correct?
I'm trying to get a hard reset of a level, and a travel that destroys and reconstruct everything would be ideal. Any way around of traveling without using seamless and using steam?

[fathom aspen]

Edit Steam SDK?

[olive kraken]

haha

gotcha

So it comes all from their side

[fathom aspen]

But why is the question tbh? Seamless is preferred over non-seamless anyways

Peeps are dying to seamless travel between servers

[olive kraken]

It is just a bunch of things to keep track and reconstruct, garbage collect, reset state of many things (doors, gates, etc)

[fathom aspen]

Have you checked AGameModeBase::ResetLevel()?

[olive kraken]

yeah

which fires a reset per actor with its own logic, correct?

thing is, that is gonna be a big bunch of work

cause most of objects have a ton of states

maybe lazyness, was trying to pull the cable of hard reset

[fathom aspen]

That is still preferred over non-seamless traveling.

[olive kraken]

yeah, experimented with that, proceduralism doesnt fit well

need to travel to another level, and go back to the same one

seamless travel to the same level won't fire most of the function I need to fire in the game mode

only the swap controller event

[fathom aspen]

Prolly there is some type of sorcery you can do to reset actors to their CDO state

[olive kraken]

yeah, that is why I was brute forcing things as much as I could

guess I'm looking for something a bit more customize that need some backend

will play around with reset anyway

wanted to confirm the steam limitation before I get paranoid 🙂

thanks for that

[glad escarp]

Another random question for you smart folks: Isn't the GameMode override on a map supposed to override your last game mode? I'm opening a new map from my main menu widget and it doesn't spawn in with the right pawn or controller

[stone niche]

We use Steam and hard travel, you cannot do a seamless when switching game modes and levels, even if you try seamless the UE code drops back to a hard travel.
It is just that the Steam subsystem is bugged in 5.0 so the connection is lost and we have to join the server again, its fixed in 5.1 though.

[fathom aspen]

You either:

1. Not traveling to the right map.
2. You think they aren't the right pawn/controller while in fact they are.

Also make sure you save if you're doing that standalone

[glad escarp]

hmmm. Well I'm definitely traveling to the right map. And the pawn is definitely not the right one. Which is why I'm so confused.

[fathom aspen]

Then check what GameMode is being spawned and why

GameMode: Created by GameInstance when server loads the map inside UGameInstance::CreateGameModeForURL(), called by UWorld::SetGameMode(), called by UEngine::LoadMap().

From: https://wizardcell.com/unreal/persistent-data/#gameframework-objects-creation-cycle

"cycle" doesn't seem the correct word in this context, maybe I should just replace it with "calls"?

Violence is my middle name

order seems nice. Should I give you props:jk: in the article now?

[quasi tide]

"Shoutout to Laura from the Unreal Slackers Discord for helping with clarifying some details"

[glad escarp]

Figured it out. I'm dumb. Thanks.

[fathom aspen]

I'm still waiting for you to edit: https://unrealcommunity.wiki/developer-blogs-455nbtri

[quasi tide]

If it weren't for Tim Sweeney, we wouldn't be having this conversation. So thanks Papa Tim.

https://tenor.com/x17u.gif

[fathom aspen]

Can I hot reload instead?

Give me the description I will do it for you

thatsyourproblem.jpg

[quasi tide]

Should be pretty easy. "Some useful tips & tricks to not suck with UE"

[fathom aspen]

How about: "My #cpp collection tips that I got blocked for"?

[quasi tide]

Use that as the description @fathom aspen 👆

[fathom aspen]

Done.

[red musk]

If a character is travelling at a very high velocity, i.e. they're dashing for example, it looks a little choppy for remote players.

Doesn't seem like its a server correction issue or anything, seems like it might be remote players aren't actually smoothly simulating, and it's just updating position via replication beats; is that the case for remotes, or is there simulation happening on your client for them to smooth their movement?

[fathom aspen]

But how would I understand the content if I don't know the blog name?

Oh promising, don't

But I like being able to edit your posts.

[fathom aspen]

Pretty sure that is corrections. The CMC does its best to smooth things for you, but you would still want to add your touch

Or I have dragonHell powers

[fathom aspen]

I think you should ask for edit control, but yeah it's somehow evil

[red musk]

Whichever one is deprecated

[fathom aspen]

GMC is better, fite me

Me neither, waiting for some kind soul to buy it and give me their opinion

Laura in #multiplayer soon™️ ? 👀

Shame on me I just got to know the joke. Thanks Google (tho I know you broke ) or that was Meta?

WhileActive will be called every time an Actor enters the relevancy range of a GameplayCueNotify_Actor. OnRemove will be called every time an Actor leaves relevancy range of a GameplayCueNotify_Actor.

From GAS compendium. Can someone confirm that tranek meant to say "connection" instead of "Actor"?

I'm 99.9999% sure but I want that confirmation so I can sigh

Right, but the whole relevancy system goes around actors having a relevancy range that is checked against connections

I'm not excluding what you said, it's just unnatural to me

GAS is weird anyways

Oh yeah I like how they invested in the docs for that function

Seems like that is just the TargetActor you apply the GC on.

Nice GC can have double meanings now

Well time to take my 💊

[hexed pewter]

Steam overlay does show up in standalone-editor but doesn't show up in shipping version. Did i forget something trivial?
edit: fixed, I forgot steam_appid.txt file in Game/Binaries/Win64

[humble edge]

My dedicated server is shutting down itself we play and someone dies and respawns multiple times. Anyone who experienced similar issue?

[plush wave]

Can you call HasAuthority() on a player controller?

[quasi tide]

Yeah

[marble gazelle]

did you check if the server maybe just crashed?

[ember vine]

anyone know what the #if dedicated server / #if client macros are ?

[fathom aspen]

There is #UE_SERVER but that excludes code from client build if that's what you mean

[latent heart]

If you want to check in code if you're a server or client when it's not build-defining, you could check netmode or whatever.

[fathom aspen]

That is IsNetMode(NM_DedicatedServer) for example

[ember vine]

this is early initialization im not sure if netmode is set in time - yea im looking to exclude code from client builds/server builds

i'm writing up external backend communication code basically

[fathom aspen]

I don't know how early that is, but NetMode can be problematic in earlier times

[safe iris]

Ok tbh multiplayer is very interesting

Ill read up the stuff pinned here

[fathom aspen]

Amazing. Pick the beginner friendly ones first so you don't get frustrated

[latent heart]

If you're building with the server or client configurations, you're good (using the macros)

[safe iris]

Absolutely

[latent heart]

If you want to use a listen server or some such, you might be better off checking for #if !UE_CLIENT rather than #if UE_SERVER, though.

[ember vine]

ooh yeah okay, thanks 👍

[sage light]

Hi guys, I have enabled the network prediction plugin on my UE 5.1 project. Objects now fall very slow, what can cause this issue?

I have the physics set to be asynchronous

Here are my plugin settings

[fathom aspen]

Not that I use it, but fwiw it's not a stable plugin yet

And currently on hold afaik

[sage light]

I'm aware of it, but still want to give it a chance as it can fit my project well if I can solve this one problem

[grizzled stirrup]

For simulating basic rigidbody physics (barrels, boxes etc.) in multiplayer, what option do you prefer?

A: Simulate physics on server and replicate movement at a high enough interval (30-60 times per second) to avoid choppiness on client
B: Simulate physics locally and allow deviations?

Of course it depends on the game but in this case it's secondary actors that don't have much of an influence on gameplay but still should make sense if player A says "look I'm kicking this thing" and player B doesn't even see the thing because it simulated differently on their machine, that'd be weird

OR I guess you could simulate with a low net update rate and interpolate location and rotation on the client which may be the best of both worlds

[dark edge]

WHy not use the built-in physics replication system?

It does a decent enough job

I would only ever replicate if it was necessary for gameplay purposes tho

I'd never replicate clutter and cosmetic only physics

[grizzled stirrup]

As in SetReplicatedMovement(true); ? Seems to interp the movement nicely at low update rates but the rotation is very choppy

Do you know if it's possible to enable rotation interpolation?

I could disable replicated movement and just have my own replicated FVector_NetQuantize ServerLoc and FRotator ServerRot and lerp to them on tick on each client local machine

[glad escarp]

In regards to the conversation yesterday about listen server flow. Should I start a session and then open my lobby map or should I open the lobby map (with listen) and then start a session?

[dark edge]

There's a whole physics replication system with tunable parameters

Look in project settings

I haven't touched it since 4.27 but it should still be around.

[grizzled stirrup]

In 4.27?

Damn great

Thank you

[dark edge]

It doesn't just interpolate, it tries to maintain smooth acceleration etc and "nudge" physics into the right state

it can also extrapolate

[grizzled stirrup]

Wow this is really great, so many options! Never have seen this before. So all I need to do in order to make use of these params is to have a simulated component Mesh->SetSimulatePhysics(true); and this is true? SetReplicatingMovement(true);

[dark edge]

I've only ever set the params in BP.

[grizzled stirrup]

As in I'm not supposed to be adding some kind of PhysicsMovementComponent to my actor or whatever?

The engine will just use these as soon as a simulating object has the Replicated Movement flag set to true?

[dark edge]

Those are the tuning settings. It can replicate any physics enabled component

you don't need to add anything

but the stock settings are really strict and rubberbandy. You'll want to tune them. Maybe even look at the source code to see what they're doing.

[grizzled stirrup]

Thanks this is great, already seeing better results

[dark edge]

Make sure you test with 2 windows and doing stuff clientside (to test the correction)

It'll look great if you make the settings really loose, but then they'll diverge

[grizzled stirrup]

For sure! I have a pretty bad case scenario set up by default and as you said the default settings are far too strict

Just trying to figure out how to make the rotation smoother

Tried raising all error limits

But there's still jarring hard snaps for each network update

Movement is fine

[dark edge]

Angle lerp

[grizzled stirrup]

Ah I needed to lower it!

Not raise it like the others

Works great now thank you for the help

Bandwidth down from 30K to 4K 😄

And that can likely be crushed even more with more tweaks

[dark edge]

This is what I use for my vehicle game, I only replicate the chassis and turrets movement, not wheels etc

[quasi tide]

30K? Jeebus

[dark edge]

I dont' care if client and server disagree on wheel bounce from a speed bump, as long as they agree on the RESULTANT chassis movement

[grizzled stirrup]

Yeah was just testing to see what the bandwith was like at acceptably smooth update rates, don't worry wasn't planning on shipping like that 😄 Now I can get away with 2-4 updates a second and let the interp stuff handle the rest

[grizzled stirrup]

That makes total sense! Anything secondary or cosmetic the client can handle with much more lenient values here

Can't believe I've never seen these settings. I guess I saw the football in fortnite that was rubberbanding like crazy and assumed there was no built in interp stuff for physics 😄

And have always heard how hard physics replication is but I assume people are talking about rocket league situations in that case

Where the ball needs to be very accurate

And is very relevant to gameplay

[dark edge]

The hard part of Rocket league isn't the accuracy, it's the prediction

If you're ok with stuff starting on the server then replicating out, it's trivial.

The hard part is doing the physics on owning client AHEAD of time and handling the discrepancies. THat's what Rocket League is doing.

[grizzled stirrup]

Got it, makes sense!

Final thing, is it possible to have a different gravity scale per simulated actor? I have the global gravity scale working great for my character but movement is floaty on the simulated objects

I don't see anything other than a checkbox to enable / disable gravity

I can always have an AddForce(0.0f, 0.0f, -MyGravity * DeltaTime) call on tick but surely there's a gravity scale around?

[dark edge]

Can Character override gravity for itself?

I'd do that and have global gravity be the real thing

[grizzled stirrup]

Cool will do that even though it'd be interesting to have certain actors float more than others but I suppose mass will handle some of that

IT's funny, gravity has to be set from -980 down to like -5000 for it to be fast enough to be believable but this may be down to mass. Though I've always noticed default gravity in UE is extremely floaty

[dark edge]

That's mostly due to your size.

Gravity will seem floaty if you are much bigger than a realistic scale, it'll seem really fast if you're much smaller.

[grizzled stirrup]

Also makes sense 🙂

[thin tulip]

Is it possible to create a new actor that acts as an autonomous proxy? One that doesn't inherit from Pawn or PlayerController, I mean.

Looking for another option to send RPCs from client to server that isn't a Pawn or PC.

[grizzled stirrup]

As long as the client owns that actor they can AFAIK]

[thin tulip]

There's SetAutonomousProxy on AActor, which you can probably call on the server. I'm gonna give it a shot.

[fathom aspen]

Which also unfortunately won't help you much

A client-owned actor has to own that actor

[chrome bay]

Just spawn an actor that's "owned" by the client? That's the only way anyway

[chrome bay]

Not for physics-simulating objects, gravity is fixed for the whole scene.

IIRC the way PhysX integrates gravity is a bit different too

I always got very different results doing it myself

[grizzled stirrup]

Good to know thanks! Got a hacky AddForce setup on tick working for now (applying additonal gravity each frame)

[thin tulip]

How does the server end up with a representation of that actor, then? If you spawn it on the client the server won't create its own copy, right? Don't you still have to spawn it on the server, replicate it to the client, and then tell the server that the client owns it?

I'll dig into how player controllers do it since those spawn in both places.

[fathom aspen]

Right. Client owning some actor, means a client-owned actor owning that actor

Owning happens server-side

Always

[thin tulip]

Hm, so you mean like literally MyNewProxyActor->SetOwner(SomePlayerController)?

[fathom aspen]

Literally spawn a replicated actor server-side, and inside its FActorSpawnParams specify Owner to either PC/PS/Pawn

[fathom aspen]

Yes

Either that or SpawnParams

[thin tulip]

Gotcha, that makes sense to me. Thank you!

[serene furnace]

Hey there !
I'm having a question about this small code :

• Is this begin / end overlapped natively replicated, of is it replicated cause my pawn class is set to replicated
  -Any way to cancel the native replication of certain functions ?
• How to know if an event is already natively replicated ?

Cause no matter the code I do as long as I use this function, everyone sees each others widgets xD

[fathom aspen]

1. Yes.
2. Engine modification.
3. Usually by testing.

What you're looking for tho is IsLocallyControlled

You don't want that widget to show for simulated proxies I guess, so you use that

So basically you check DoesImplementInterface && IsLocallyControlled

[shy yarrow]

does seamless travel work with open level instead of executeConsole?

[fathom aspen]

No. OpenLevel is always hard travel, like it's said here: https://wizardcell.com/unreal/persistent-data/#travel-drivers

[sinful tree]

The events themselves are not replicated. The client and the server themselves can detect anything that may overlap and will trigger the event only on their instance. If you have an actor that is not replicated spawned on the server, and it overlaps, then it will trigger that event only on the server. Similarly, if you have an actor spawned only on the client, and it overlaps, it'll trigger that event only on the client.

The way to gate it is by using a branch checking IsServer or IsLocallyControlled (if you're checking against a player character for example)

[shy yarrow]

when I activated seamless travel and use executeConsole , then the UI HUD of the level only be appear and the map not be open , why ? without seamless travel everything work perfect

[fathom aspen]

You haven't provided sufficient information for me to be able to answer the question

I wanted the bio medal instead @whole grove 😔

[shy yarrow]

look at the video

after I press start button , the game map HUD will be appear but the UI of the lobby map will not be removed !!!!

[fathom aspen]

Now you explained things better

Reason being UMG widgets persist seamless travel as it's said here: https://wizardcell.com/unreal/persistent-data/#persistent-objects-on-client-to-destination-map

You will have to remove them yourself manually

[shy yarrow]

how I can remove it manually ? with using remove from parent ?

[fathom aspen]

The science behind the behavior is still being researched: https://wizardcell.com/unreal/persistent-data/#persistent-non-actor-objects-across-seamless-travel and hopefully we get to why that happens

Have you tried clicking any of the links I sent?

https://wizardcell.com/unreal/persistent-data/#should-userwidgets-persist-seamless-travel

This for example should get you to your end goal ^

[dry pebble]

have an issue where the host can't hear the clients jump/footstep sounds from Anim Notify Play Sound but the client can hear the host and other clients. Any ideas? Using steam too

[fathom aspen]

We might figure out what's going on if we saw relevant code

[shy yarrow]

thank you for you help , I removed the widget and now I have another issue , my Level gamemode is different with lobby gamemode, after seamless travel , my Level Gamemode will not be load , I wrote a spawn function inside that gamemode , do you know why?

[fathom aspen]

Your GameMode spawns and loads fine, it's that function that isn't working properly. Debug your code and figure it out

[shy yarrow]

but I put GEngine->AddOnScreenDebugMessage in GameMode PostLogin and it not be called in Seamless travel , in Normal travel it will be run and everything is good

[fathom aspen]

Yes because PostLogin doesn't get called in seamless travel

It gets called for hard travel

[shy yarrow]

so any thing can I use instead?

[fathom aspen]

You might want to use HandleStartingNewPlayer

That gets called regardless of the travel type

[shy yarrow]

thank you

[fathom aspen]

By the way all of what I said up to this point is in that compendium

[shy yarrow]

yes thank you , I will read all that

[shy yarrow]

its work now , thank you , I really Appreciate all your help❤️

[serene furnace]

Thanks for the answer guys, thats making more sense to me, I need to work more with the "is locally controlled", and lurn more about it, I been having several issues with that ^^

[shy yarrow]

does ping in UE5 has bug ? it always shows 9999 !!!

[dry pebble]

hmm there is no code for this, just a Play Sound Anim Notify for running or jumping which is in a state machine. I tried adding the Anim Notify too called Footstep and linking it up with a Play Sound at Location, but it only fires for clients, not the host. Such a weird bug. The Anim Notifys in a animation montage work for the server (when the client moves for e.g), but don't fire for the Anim Notify Play Sound in the animation itself

[hallow orbit]

thats an bug with the steam API

assuming you use steam

[chrome bay]

The engines built-in Steam implementation is pretty lackluster/barebones to be honest. It's quite common to have to modify or update it

[shy yarrow]

Yes I using Steam

[hallow orbit]

yeah the ping doesnt work in blueprints, it needs to ping from an actual server in the real world, without that it will print 9999

[cold moat]

Guys, the HUD class only runs on client, as far as I know, correct?

[hallow orbit]

depending on how you do it. yea

[cold moat]

I'm spawning a widget on the HUD class, like this, and then from the player I do the following to use it

but doing this, it seems like every player uses the same HUD?

[hallow orbit]

btw on the widget ref, disconnect the bottom blue line and use the end of the set to get into the add to viewport

[cold moat]

when doing it like on the screenshot, they end up not being the same?

[full tree]

every client + listen server has own instance of hud

[hallow orbit]

i dont have any experience with the HUD class, but the **get player controller (0) ** could be why

since that grabs the servers controller

[cold moat]

how should I do it? D: I'm not very sure on how to reference the player

for example the "owning player" I have no idea what to connect there

[full tree]

HUD and UI is just local for every player including listen server, if it creates anything it creates it locally, little "computer icon" also tells that is local. GetPlayerController(0) will give you local controller.

[cold moat]

But if its local how can other players change the variables and stuff on it?

That's why I used GetPlayerController(0), because I thought locally there is only one player (?)

[sinful tree]

This event begin play is on your character?

[grave fog]

Hi I am new at unreal engine I want to build mobile mutiplayer listen server . how can I save players important date like how many coins he has ? I dont want to save them localy so they cant cheat .If there is a video explaining this, I would appreciate it.

[cold moat]

It is on the HUD class

[sinful tree]

Are you running as a listen server?

[grave fog]

yes

[cold moat]

I'm playtesting as listen server + 1 client

[sinful tree]

You can't prevent cheating and allow players (or third party hosting services) to run servers. The moment you give players access to run the server, they are capable of doing whatever they want. If you are trying to save externally there's only so much you can do to prevent faulty data.

[sinful tree]

Ok, in that case Get Player Controller 0 may not necessarily resolve correctly on the listen server itself as it contains all client player controllers as well - it should always be at index 0, but in some instances I believe it may not be. Otherwise, there doesn't appear to be anything specifically wrong with this set up if your intention is to have the HUD spawned for everyone, each client and the host will have their own copy of the HUD spawned.

[cold moat]

Hm I quickly tested playing with 2 clients only

[full tree]

If you change the way you thinking about it it will be easier for you. UI is local and it should show variables located somewhere else not in UI, it basically just a front end, no game logic, no game variables there is just a tool for reading and showing variables.

[full tree]

if you want to change some variables and make it visible for everyone it should be located on element existing for everyone for example pawn (to not compilate too much)

or any other replicated actor

[sinful tree]

That's an indication that either the HUD wasn't spawned where you're trying to access it (like on a dedicated server), or your cast failed indicating you haven't set the HUD class in your game mode settings. You could also be attempting to call this function before the HUD was created.

[full tree]

btw it is better to use GetOwningPlayerController

[cold moat]

My guess then is that all players are using the server HUD instead of having their own each one

[sinful tree]

HUD and UI/Widgets only exists on the local instance of the game.

[cold moat]

The HUD is created on begin play, I'm taking some time to get damaged, so I don't think that's the situation

[sinful tree]

Ideally, you'd remove your HUD from all game logic and use event dispatchers that your HUD can then bind to so it listens to whatever it needs to listen to and updates itself.

So instead of doing something like
Player Takes Damage > Get HUD > Update HUD

You'd do:
HUD > Bind to Player "Damage" Event Dispatcher > Update HUD when event dispatcher is triggered
Player Takes Damage > Signal "Damage" Event Dispatcher

[full tree]

HUD is automatically created when game mode initialize player

[cold moat]

I meant the widget created on begin play inside the HUD class, my bad

[cold moat]

This sounds very amazing, I need to learn how to do this though, I don't know how to bind to events

[sinful tree]

The error message you received here is specifically speaking to the HUD class itself, not a widget. It says "Get PlayerHUD As Player HUD" which is a direct reference to the function name and the return value. Again, an indication that either the HUD hasn't be created when this function is called, or you haven't set the correct HUD class in your game settings.

Or the GetPlayerInformationWidget is invalid.

[cold moat]

the widget call should work, tried debugging/printing the variable/ref once it is created and it is there hm

isn't the HUD created almost instantly when the game begins?

[full tree]

Maybe will be better to follow some yt tutorial, should be plenty with player health, and then next step will be multiplayer

[cold moat]

I tried finding some tutorials but there always some differences on how the person set their widget itself, its complicated, but I'll try to search some more

[full tree]

https://www.youtube.com/watch?v=PVgMkUwhtoM&ab_channel=MattAspland just an example

[cold moat]

I'm sure I'm lost somewhere

[sinful tree]

No. The HUD is created when the PlayerController is created.

[grave fog]

@sinful tree how to prevent cheating while using listen server?

[sinful tree]

You cannot.

[grave fog]

I must use dedicated server to prevent cheating

[bitter oriole]

And anti cheat, and player reports, and...

[cold moat]

I'll watch it, the part about linking to the player looks good lol

[bitter oriole]

Good luc kwith multiplayer on phones

[sinful tree]

No. You must use non-distributed dedicated servers. As soon as you allow anyone to host servers (whether dedicated or listen) other than yourself, your external data storage system will need to be accessed and would be getting updated by other people, meaning you cannot prevent players from cheating.

[bitter oriole]

tbh

[plush wave]

Anyone else using the SocialToolkit?

[cold moat]

So, was following that video sent before, just set the player to create the HUD, nothing else

[sinful tree]

Where is this event begin play?

[cold moat]

On the player character

[fathom aspen]

IsLocallyControlled?

[sinful tree]

Are you trying to access the HUD while running on the server or something (again, usually dedicated servers have this problem)

[cold moat]

I'm playing as two clients hmmmm

[sinful tree]

Ok, so "As Client" indicates dedicated.

Begin Play fires on all clients and the server.

[fathom aspen]

There is a setting to load widgets on dedicated in project settings 😄

Evil setting

[sinful tree]

Shhh

I dunno why they would do that XD

[cold moat]

Is there any way I can specify so only the client runs it?

[fathom aspen]

Some junior dev added it prolly

[cold moat]

Like authority somehow?

[fathom aspen]

Yes: #multiplayer message

[sinful tree]

But anyway, dedicated servers cannot load UI by default.
Yes, you can use IsServer or HasAuthority

But you have another problem.

If you're doing this in the player character, Begin Play fires on all clients as well. So you'll have multiple widgets showing up on your screen for every player character.

As WizardCell suggested, you may want to use IsLocallyControlled 🙂

[fathom aspen]

IsLocallyControlled is my go to node in such situation for the simple reason that widgets, HUDs, etc. exist locally

[cold moat]

I'll be honest I only did on the player because the video told me to, I was so lost with this that I just accepted xD

[fathom aspen]

So even listen servers get widgets as they should

[cold moat]

I was aiming to manage player HUD on the HUD class (spawning and modifying) because it feels more organized?

[sinful tree]

And that's actually the better place to do it.

[fathom aspen]

HUD's middle name is "widgets manager"

[fathom aspen]

Yes that's a great example as to why videos are a great piece of information

[cold moat]

I'll go back on doing it inside the HUD class then, I love some organized blueprints

also quick doubt, is is possible to get reference of other players inside the HUD class since it is a local class?

[fathom aspen]

There is no player class

Well there is but you meant to say Pawn?

You can but you shouldn't need to

[sinful tree]

There is player state, player character, player controller.

Player controller is inaccessible to clients.

Player character can only be considered sometimes accessible as their character may despawn.

Player State is always relevant.

[cold moat]

Oh sorry I meant like, on my player UI I want to have the group information like on a MMO, where you can see your friends health etc, is it possible to grab these networked variables to use on HUD?

[sinful tree]

Yes

[fathom aspen]

Yes but don't

[sinful tree]

Generally speaking, that means you'd have to have those values stored on a player state if you want them to always be relevant.

[fathom aspen]

UI shouldn't carry/hold state

It should display it

[cold moat]

Oh that's very interesting

Basically UI is literally "display stuff" and not manage it

[sinful tree]

"player clicked the button to activate whatever is in slot 1"

[fathom aspen]

Yes, and pls make sure it's the old damage system so you look old school

Not my type, I prefer Udemy, fite me

[fathom aspen]

I see you declared war

[pallid mesa]

Hehe

[fathom aspen]

Who gave you permission to stop writing articles?

[pallid mesa]

Its my birthday man, give me some leeway

thanks haha

u got something new written down?

i have yet to check it out

[fathom aspen]

Happy birthday homie, another amazing year of writing amazing articles ❤️

[pallid mesa]

@fathom aspen 🥓 ☠️

[fathom aspen]

Shhh don't let them know

[cold moat]

Just to make sure I'm 100% on the same page......... (sorry) HUD class is local, and to manage widgets, on my game where I want to create stuff to more than the local player, when I create (for example) a player status widget I should reference the player owning it... right?

for example the local player (player 1) I spawn it and set the owner to player 0 as he is the local player (and for others that's subject to another day of trial and error)?