multiplayer

[past totem]

🤣

you know what

I actually had this issue too

with hosted sessions showing 9999s ping in the server search result

so I just disabled ping showing there

I don't know how to fix it

the ping showed fine for dedicated servers

[plucky prawn]

given that a lot of houses in my country are still on ADSL2 its probably not that far fetched for listen servers

[past totem]

but I was in the same room

with the 2 pcs

lol

and once I logged in to the server

the ping showed fine

and it ran fine

just a menu issue

[plucky prawn]

probably an OSS issue then?

[past totem]

Idk what oss is

[plucky prawn]

online subsystem

[past totem]

I mean the issue is with the search result thing

yea maybe with the advanced sessions plugin or that

[oak prawn]

I'm lobbying over the lan, it shouldn't show that much ping

[past totem]

it's a bug in the engine

just hide the ping there

[oak prawn]

can't we find the real ping 😄 @past totem

[past totem]

sounds kinda pointless,

too much trouble than it's worth

but if u figure it out, by all means, let me know so I Can fix in my project too

[oak prawn]

So how can I get him to join the session directly when I say invite him to the game via steam? @past totem

[past totem]

I don't know why you are pinging me

but if u use advanced sessions there is an event for it in the game instance

but when I tried it was kinda weird for me not really working Idk maybe steam is just bugged Idk

[oak prawn]

hmm

yes it didn't work for me either

[past totem]

r u using the event?

in the game instance

[oak prawn]

finally i have a problem

[past totem]

this is your third

[oak prawn]

Once someone has established or joined a session, they cannot create or connect to a second session.

[past totem]

always call destroy session before u call join session

[oak prawn]

are you experiencing this? I cannot establish a new session without entering and exiting the game.

hmm

I'm an experiment

@past totem

[past totem]

I said before

second seems correct

[limber cloak]

why doesn't this work:

public:
        UFUNCTION(Exec)
    void Join(FString ipAddress);

    UFUNCTION(Server, Reliable)
    void Test();

void UMyGameInstance::Join(FString ipAddress)
{
    UEngine* engine = GetEngine();

    if(engine)
    {
        engine->AddOnScreenDebugMessage(0, 2, FColor::Green, FString::Printf(TEXT("Joining %s"), *ipAddress));
        Test();
    }
}

void UMyGameInstance::Test()
{
    UEngine* engine = GetEngine();

    if(engine)
    {
        engine->AddOnScreenDebugMessage(0, 18, FColor::Green, TEXT("THIS SHOULD WORK ON THE SERVER ONLY"));
    }
}

this is the error:

CompilerResultsLog: Error: MyGameInstance.gen.cpp.obj : error LNK2005: "public: void __cdecl UMyGameInstance::Test(void)" (?Test@UMyGameInstance@@QEAAXXZ) already defined in MyGameInstance.cpp.obj

CompilerResultsLog: Error: MyGameInstance.cpp.obj : error LNK2001: unresolved external symbol "public: virtual void __cdecl UMyGameInstance::Test_Implementation(void)" (?Test_Implementation@UMyGameInstance@@UEAAXXZ)

CompilerResultsLog: Error: MyGameInstance.gen.cpp.obj : error LNK2001: unresolved external symbol "public: virtual void __cdecl UMyGameInstance::Test_Implementation(void)" (?Test_Implementation@UMyGameInstance@@UEAAXXZ)

PuzzlePlatforms\Binaries\Win64\UnrealEditor-PuzzlePlatforms-5313.dll : fatal error LNK1120: 1 unresolved externals

[jolly siren]

@limber cloak should be Test_Implementation() in the cpp instead of just Test()

[limber cloak]

ohhh thank you very much, im coming from unity3d and the documentations are not the best

[jolly siren]

No problem ☺

[limber cloak]

why does the code run only on client?

UFUNCTION(Exec)
    void StartFunctionOnServer();

    UFUNCTION(Server, Reliable)
    void Server_Test();
    void Server_Test_Implementation();

void UMyGameInstance::StartFunctionOnServer()
{
    Server_Test_Implementation();
}

void UMyGameInstance::Test_Implementation()
{
    
    TArray<AActor*> allActors;
    UGameplayStatics::GetAllActorsOfClass(this, AMovingPlatform::StaticClass(), allActors);
    
    for(AActor* theActor : allActors)
    {
        UStaticMeshComponent* theComp = theActor->FindComponentByClass<UStaticMeshComponent>();
        
        if(theComp)
        {
            theComp->DestroyComponent();
        }
    }
}

[limber cloak]

it runs only on client

not on server, idk why

[sinful tree]

If this actor is a child class of GameInstance, then the Game Instance only exists on the instance of the game that is running. So the server can have its game instance, the client(s) each have their own but there is no replication of Game Instance happening so you can't RPC through them.

[limber cloak]

ahhh ok thanks

It only runs on the client, idk why. I want that the client tells the server to run this code, not the client
Here is what I did:

private:

    UFUNCTION(Server, Reliable)
    void Test();
    void Test_Implementation();

void AMovingPlatform::BeginPlay()
{
    Super::BeginPlay();
    
    //if it is client, then tell the server to run the function, if its server, then do nothing
    if(!GetWorld()->IsServer())
    {
        Test_Implementation();
    }
}

void AMovingPlatform::Test_Implementation()
{
    UStaticMeshComponent* theComp = FindComponentByClass<UStaticMeshComponent>();

    if(theComp)
    {
        theComp->DestroyComponent();
    }
}

[sinful tree]

Assuming this actor is made to replicate, and is spawned by the server or placed in the level, RPCs cannot be made through this platform unless it is owned by the client.

[limber cloak]

how do I make it be owned by the client?
Also 1 more question, if an actor or a pawn is not owned by a client, the code wont run at all on the client or?

[sinful tree]

You can have code run on an actor that isn't client owned, but you cannot have the client call RPCs to the server through it to run code.

For example, if you had an "else" on your if(!GetWorld()->IsServer()), then the code in that else would only run on the server.

[limber cloak]

yea I forgot to SetReplicates(true); after I did that, it crashed the engine. Probobly because it was an actor, not a pawn

[sinful tree]

Actors can replicate no problem.

[limber cloak]

Yes I understand that, but i want to learn how to Command the server

[sinful tree]

In fact if you want something to replicate, it basically has to be an actor.

Any time you want a client to tell the server to do something, you're usually better off doing through a player owned actor, such as the player controller, their controlled pawn, or their playerstate, or anything that is owned by those three. You can change ownership of actors on the server to allow a client to RPC through them, but it doesn't make sense to if it's just a small thing, like say opening a door.

[limber cloak]

for example, there is this 1 actor(not pawn) its a simple moving platform. I can't use inputs in it, cuz its not a pawn, but if i use linetrace will it work then?

if i do like linetrace get the actor and then call the function from that actor

to command the server

[sinful tree]

If you're wanting the client to control the platform, then yes, something like that.
So something like, client presses button on their character/player controller, does a line trace, hits the platform actor, if hit actor is valid, runs an RPC to the server on the player controller/character passing along a reference to the actor that was hit, while running on the server you can use an interface to that actor (or cast, or however you need) to run a function on that actor.

[limber cloak]

can someone figure out, why this isn't working?:

public:

    UFUNCTION(Server, Reliable)
    void Test();
    void Test_Implementation();

void AMovingPlatform::Test_Implementation()
{
    //if(!GetWorld()->IsServer()){return;}

    UStaticMeshComponent* theComp = FindComponentByClass<UStaticMeshComponent>();

    if(theComp)
    {
        theComp->DestroyComponent();
    }
}

im doing a sweepsinglebychannel on my character class

and the hitResult triggers the public function of Test_Implementation()

but only the client removes the cube

not the server

What am I doing wrong?

void AMovingPlatform::BeginPlay()
{
    Super::BeginPlay();

    if(GetWorld()->IsServer())
    {
        SetReplicates(true);
        SetReplicateMovement(true);
    }
}

please help

[sinful tree]

Again, are you RPCing to the server first on the character before calling Test()?

[limber cloak]

Can you give an example?

the character does not have a UFUNCTION(Server, Reliable)

only the AMovingPlatform has

[sinful tree]

You can't call UFUNCTION(Server) on actors that are not owned by the client. Those types of UFUNCTIONs are Client -> Server RPCs and they can only be executed on client owned actors.

You must use a UFUNCTION(Server) function on one of the client owned actors, like their character, player controller, or player state, then within that function you can execute what needs to happen on the server. And if you pass along a reference to the actor you're trying to interact with in that function, then the server can use that actor reference - you need to either cast or use an interface to perform the required function on the target actor.

Here's a BP example to show the flow.

[limber cloak]

TY!!!!!!!!!!!!!!!!!!

it works

when i placed the UFUNCTION(Server, Reliable) on the character

it worked

[limber cloak]

It's me again XD
I'm having this NetMulticast being called by the Server inside the character class.

UFUNCTION(NetMulticast, Reliable)
    void NetMulticastDoFunction(class AMovingPlatform* thePlatform);
    void NetMulticastDoFunction_Implementation(class AMovingPlatform* thePlatform);

void APuzzlePlatformsCharacter::NetMulticastDoFunction_Implementation(AMovingPlatform* thePlatform)
{
    if(thePlatform)
    {
        thePlatform->Test();
    }
}

The server simply calls this function but the clients dont run the Test() function

[sinful tree]

I don't think you need the class specifier. You're using a reference to an actor, not the class of the actor.

[limber cloak]

changed it, but still the same

basically the Test function is this:

void AMovingPlatform::Test()
{
    UStaticMeshComponent* theComp = FindComponentByClass<UStaticMeshComponent>();

    if(theComp)
    {
        if(newMesh)
        {
            theComp->SetStaticMesh(newMesh);
        }
    }
}

public:

    UFUNCTION()
    void Test();

    UPROPERTY(EditAnywhere)
    UStaticMesh* newMesh;

[fallow pendant]

Hi veryone, I've been struggling to solve this problem. Please help me.
I have a multiplayer shooter game.
For now, When I left click, the character fire automatically. But the problem is. The line tracing and applying damage only happen on server then the visual effects are played on the client after some params are replicated.
But the problem is, there is a huge delay between the point I click a button and the player then fires.
I use Unreal Engine network simulation to get around 30-60ping.

How do I solve this problem?

[limber cloak]

it might be that the host is running in background, try using the UE Play as Listen Server

[fallow pendant]

Thank you. But I intended for the host to be running in background. And I know that when I click a button, client has to send a request to server to trace a ray and apply damage etc. And then server replicates back to client to play visual effects. It takes ~1/10s to do so. So there is a delay.

[fallow pendant]

I also tried to PIE with Listen Server, On client side, it's still delay

[thin stratus]

@past totem try to route peeps to #online-subsystems if it's about sessions and such

[thin stratus]

You predict the hit effects locally usually

Just not the damage

You don't want any delay, not even 60ms

Feels like crap for the local player otherwise

[fallow pendant]

Thank you. I'll try. I use GAS and the visual effects are replicated using Gameplay cues

[thin stratus]

Yeah but shooting a gun uses a predicted GA

So the GC should also be predicted fwiw

[fallow pendant]

Oh

Can you please help me on that.

I guess my GA is not predicted

[thin stratus]

That's a #gameplay-ability-system issue then

[fallow pendant]

Cool. I'll try to do it first then I'll ask for help there if I can't

[thin stratus]

There are more people than can help you with the setup

[fallow pendant]

Thank you

[thin stratus]

Theoretically if the ability is set to predict and is started locally on the owning client, the only thing you have to ensure is that the prediction window inside the ability graph doesn't "die"

Which usually happens if you have latent nodes

You can then use the WaitNetSync with ServerOnly Wait to give the Client a valid window again

You should also read through Traneks gas guide once more cause it talks about prediction there

[fallow pendant]

Thank you. That's really help.
I'm reading it rightnow

[cobalt pawn]

Hey guys, I am unable to make the players shoot when I increase the number of players to 2. I am getting this error and I suspect something wrong with the way the shoot logic works

The logic under question is this

[upbeat basin]

I'm guessing that you created your Rifle in client and trying to call a server RPC

[cobalt pawn]

this is the fps starter template

so all i did is increase the number of players to 2 and replicated the projectile and the character mesh

so i can see my guy running around but he can't shoot because of that error i mentioned

[chrome bay]

FPS starter template isn't MP ready AFAIK

[upbeat basin]

No it isn't

[cobalt pawn]

shit

What is a good multiplayer template to use

[upbeat basin]

The Shooter Game

Unreal has another template (or more of a demo) for multiplayer FPS

https://docs.unrealengine.com/4.27/en-US/Resources/SampleGames/ShooterGame/

[chrome bay]

Lyra is the new kid on the block but it's a bit excessive/overwhelming to say the least

And it doesn't really teach you anything because JustUseGameplayAbilitiesForEverything(TM)

There's also the "Multiplayer Shootout" sample, but that's hidden somewhere deep on the launcher and hasn't been updated for some time (but it is BP, unlike the others)

[wooden cypress]

How do you make a kill counter in a multiplayer game when people have lost of different blueprints?

[past totem]

Put it in the player controller?

[wooden cypress]

I have a bunch of actors, that players can posses. Do I need to keep casting on DamageEvent? OR is there another way

[past totem]

Use a parent actor for all of them?

[wooden cypress]

I'm using PaperZD so the parent is locked on that

[past totem]

Can't u make a child of that and use it as parent

U could also maybe use interfaces

[wooden cypress]

I tried making a parent but I cant cast it to it, it keeps failing

I'm trying to get DamageCauser

[woven basin]

For Servers + OnRepNotifies.

I understand that the "On Rep" notify only gets fired if a value changes and is then replicated down to clients.

But how do you handle scenarios where the game could be either a Listen Server or a Dedicated Server. If we take the following simple code;

void AWeapon::ServerFireWeapon()
{
     Ammo--;
}

void AWeapon::OnRep_Ammo()
{
      Controller->UpdateHUDAmmo(Ammo)
}

In a Dedicated Server, this works perfectly. But in a Listen Server, I need to call UpdateHUDAmmo on the server, otherwise the listen server local client wont know to update their own HUD (but the remote clients do).

Whats the "best practice" here to manage this generic scenario? Especially with larger functions where I dont want to duplicate 10 lines into two different functions.

Do/can/should I put OnRep_Ammo() as a manual call inside ServerFireWeapon(), so that it forces the listen server to run the same code as if it was only a client? Or do I split a third function like UpdateHUD() which both ServerFireWeapon() and OnRep_Ammo() both call?

[dusky linden]

Hey guys. I have problem with motion controller replication. I tried everything but nothing worked. What can I do? I'm stuck

[twilit radish]

Inside the ServerFireWeapon implementation you could probably just do:

if (!IsDedicatedServer())
{
  OnRep_Ammo();
}
```the Dedicated server check I believe simply checks the net mode, so if it's a listen server or standalone it will fire but dedicated server will not fire it. And not relevant on a client since it's a server RPC I think?

[twilit radish]

Motion controllers don't have proper replication by default (assuming this is VR). You need to either use a plugin or implement it your self.

But honestly all it takes is sending a server RPC with location and rotation and then smoothing that out on the other clients. Assuming you don't care about cheaters.

Or if you have a character that can move around constantly you could probably also send the relative location to the character so it syncs up a little better in the end.

[shell forum]

What’s the proper way of doing a RunOnOwningClient for a BP actor placed somewhere in the world? Let’s say something like a monster that I want to hide for 1 individual player.

[meager fable]

set RPC as client and call from a server RPC

[past totem]

?

don't think thatll work (since no client owns that actor)

u want to have a run on owning client event on the player controller or whatever

that then hides the monster u want

or something like

I think that's how u need to do it

[twilit radish]

Depends on if the monster is client owned or not.

But it kind of depends on the use case anyway because it sounds like a state rather then a one time event.

[warm finch]

Hey, what is the best way to sync two moving platforms between server and the clients?

I've tried using client movement and server clock for the movement, however, there are still some hitches between the server and the client

[stoic ore]

I hope you don't mind the ping but the link isn't working. I could find it via google nevertheless.

[thin stratus]

I really need to switch host

Will fix, thanks for the ping

Should be up again

[stoic ore]

that was quick, nice. Thanks 🙂

[wooden cypress]

How do I check if the pawn my controller is controlling has taken damage?

Event AnyDamage does not fire from the controller

[wooden cypress]

I'm trying to make is so that when the pawn's variable Health reaches 0, they respawn as another character

[thin stratus]

Better solution would be utilizing EventDispatcher

[wooden cypress]

Do I place health in the controller or the actor?

[thin stratus]

Or let the Pawn just tell the Controller if you only need to tell that one Actor

Health is usually in the Character/Pawn.

[wooden cypress]

Since I have multiple characters, which hold different health values how would I make it so that the controller can tell when that pawn has died

[thin stratus]

• EventDispatcher in the Pawn that the Controller listens to
  or
• Tell the Controller directly if only the Controller needs to know

[wooden cypress]

With the event dispatcher since one is on th echaracter and the other is in the controller how would I link them?

[thin stratus]

No

There would only be one in the Character

EventDispatcher are like Newsletters. The Character/Pawn has it and can Broadcast. And whoever is listening to it will get the Message.

[wooden cypress]

When I create i in the pawn I cannot reference it from the controller though

[thin stratus]

That allows you to not care who needs to know about the death, cause everyone who needs to can listen to the Dispatcher

Also called a Delegate in C++

You should be able to reference it though

If you have a proper reference of your Pawn, cast it to your custom class

Then you can bind to the EventDispatcher

If you only need to tell the Controller about the Death, you can also just call GetController in the Pawn/Character and call a function on it to respawn the Pawn

But that's only viable if the list of Actors you want to notify about the Death doesn't grow

If it does, then the EventDispatcher is the better/correct solution

[livid holly]

you can bind it on OnPossess (for the server), and I think OnRep_Pawn for the client

at those functions you ensure the pawn is ready

(I mean OnPossess might be called on a nullptr pawn so just check that 😄 )

[thin stratus]

Also OnRep_Pawn is c++ only

[tribal mango]

Hi, developing a multiplayer game using c++, how should I approach having two actors participate in the same animation (e.g a ROLE_AutonomousProxy drags a ROLE_SimulatedProxy).
My current direction is to have the player in his local unreal engine instance (local = ROLE_AutonomousProxy) have the enemy (local = ROLE_SimulatedProxy) attached to a socket that is involved in an animation - that socket represents the location for the enemy actor to be placed (more specificaly, its mesh).

Before I dive more to my own solution, does anyone knows of a best practice / or can direct to where and what to search for ❤️

[thin stratus]

I don't think you need a Socket

But the idea is probably correct

UE5 at least has this Motion Warping stuff for Montages, so you can always let it MotionWarp to the right location and then just attach with relative offset

A Socket might be cleaner but not if you need 60 different ones

[quasi tide]

GrabLocation1, GrabLocation2, GrabLocation3, etc... 👍

[tribal mango]

Awesome though it doesn't seem natural to do so, I am trying to achieve something that will not feel like a hack on unreal engine.
Stuff with relative offset or even updating the location of each actor on its own, gets even buggier when u take network delays under account.

[thin stratus]

But attaching to a socket vs attaching to the actor with a relative offset is the same

Just that it's not tied to a pre-created socket

[tribal mango]

Hmm Oh u mean like define the relative offset once

like a const

not like - update the relative offset every tick

so yeah by attaching it to a socket I hope unreal sees it as 1 actor

am I making any sense ?

Lets me rephrase what I am trying to achieve I think Cedric helped me understand what I want better

I would like to have a state where two online players are participating in the same animation - more technical,** combine them into one actor** so that when I change the location of that actor it changes in both clients

let me know if I am talking nonesense

[wooden cypress]

I dont understand how do I get the dispatcher inside of my controller without casting to my pawn?

[thin stratus]

You do have to cast to your pawn

[wooden cypress]

I get this is what I'm meant to do but I cant get the object

[thin stratus]

The object is "GetControllerPawn"

[quasi tide]

Casting is not evil like so many BP tutorials tell you

[thin stratus]

But ONLY after the Controller possessed

[wooden cypress]

I tried that but it doesnt work

[past totem]

the idea to not have to cast to ur pawn is dumb imo, u will need it for many other things later too

[thin stratus]

You can't do this on BeginPlay

[thin stratus]

You can't do that

BeginPlay does not have a valid Pawn

[quasi tide]

You have nothing connected to the object pin on the left of the cast either. So you're not casting anything.

[thin stratus]

Also that IsLocallyController -> SpawnPawn is wrong

Like really wrong

BeginPlay already calls on everyone who has an Instance of that Actor

So here Server and local Client

[wooden cypress]

I know since idk what to put in it

[thin stratus]

There is no need to ServerRPC

Just block remote with SwitchHasAuthority

And for the Dispatcher, you will need to use an event like OnPossessed

During BeginPlay you have no valid Pawn

[wooden cypress]

Everything before the cast works perfectly, it just spawns my actors in and puts the controllers onto them

[thin stratus]

Doesn't matter if it works

It's wrong

[quasi tide]

Also - why isn't the GameMode handling this? Curious question btw.

[thin stratus]

Yeah, GameMode should probably handle this in HandleStartingNewPlayer or similar

[wooden cypress]

In the video I watched he said not to put it in gamemode

[quasi tide]

https://tenor.com/bqj0n.gif

GM already has functionality to spawn your character.

[wooden cypress]

All im trying to do is to check if the pawn dies

That is it

Gamemode > Controller in that case?

[thin stratus]

I told you multiple times now

Instead of repeating yourself, try to apply what we suggest

[wooden cypress]

I really do appreciate your help but honestly its like ur speaking another language

[thin stratus]

You can get the Pawn with GetControlledPawn when the Controller Possessed the Pawn

[wooden cypress]

I dont understand what ur asking me to do

[thin stratus]

The thing is

If that is too much for you, then stop doing Multiplayer.

Cause you are literally facing singleplayer and beginner problems

Multiplayer is a whole other level of complexity

[past totem]

yea

[thin stratus]

You basically ask us how to figure out a simple respawn issue while showing numerous problems with programming a game in general

Which we then have to additionally address

The stuff I told you, you can google for those terms

If the language is a problem

But again, if you don't know how to do the Respawn stuff, which is basically the same solution in Singleplayer, then I would suggest not starting with Multiplayer.
It's just a suggestion. I'm doing this whole UE stuff for a while. You are by far not the first one to try doing MP first, and it never works out.

[quasi tide]

I know it's not the answer you want to hear. No one wants to be told to not work on their project that they do really want to work on. But what Cedric is saying is the better route overall. To get a better foundation in UE overall. Then you can come back and tackle the multiplayer problem. Adding networking adds a bunch of extra complexity that is not immediately obvious.

You can even learn UE doing a super simple single-player wave shooter game if you so choose.

[thin stratus]

If you want to proof us wrong, take the terms of OnPossessed, GetControllerPawn, Cast, Bind, EventDispatcher etc. and try to figure it the rest out with google.
I more or less told you exactly what you need to code anyway.

[cold moat]

Hey guys, I'm not sure why but this is always returning false when executed by the server

The 'get movement direction' macro shown on the screenshot

[past totem]

your theme is cringe

the server doesn't have camera data

instead of the camera data, get the control rotation from the controller

[cold moat]

I bet you also use it okay

[cold moat]

I'll try that, tysm!!!

Oh my bad..........

I'm already doing it

[past totem]

what is 'Vector Zero'?

have you heard of debugging?

if you debug, you will find out which part is wrong

[quasi tide]

Don't directly compare float values. Look for the IsNearlyZero method to compare it to 0.

[past totem]

yea maybe change the 0.0 to 0.001 or soemthing

sometimes that fixes it for me too

[quasi tide]

You can also just remove the float comparison in the != check altogether

[past totem]

it's a vector btw

[quasi tide]

Not sure why it's even there.

[cold moat]

Nice to know about this

[cold moat]

Read this dude on the forum saying that Vector Zero has the tolerance pin and it is better than leaving nothing on the vector pin

[oak prawn]

How can I fix the problem with the controls on the client server? https://cdn.discordapp.com/attachments/966517078834151484/1024338455884472421/312.mp4

https://cdn.discordapp.com/attachments/966517078834151484/1024319041655017574/sorun.mp4

[past totem]

oh, now I get what vector zero is

lol

never seen this node before, sounds so useless tho

[past totem]

define 'this problem'

your videos are 25 seconds long

And If I wanted I could list multiple problems

[oak prawn]

The problem is. There is no problem with the vehicle movements of the player in the server server, but I am experiencing flickering in the vehicle movements of the player in the client server.

[past totem]

the problem is that you are using chaos and chaos is shit

[oak prawn]

yes it can 😄

ue5 has deterministic physics.
Networked physics was supported via the so called physics prediction plugin, but it doesn't seem to work very well 😄

[quasi tide]

I'm not talking about the vector. I'm talking about the green float pin.

Saying not sure why that is there.

[tribal mango]

👆

[past totem]

can't u just think of it more technically, so like, can't u just,
attach one of the players to the other? (and disable the attached player's collision)

[harsh ice]

Can I get help

I spawned weapons in multiplayer for character

[tribal mango]

yeah I tried to describe the idea more technically here

[harsh ice]

But when the player gets disconnected the weapons are still visible on the server

[past totem]

ME TOO

[past totem]

have you considered pawn EVENT END PLAY -> destroy weapons

[harsh ice]

It works when i click on it quite but not when i directly close the game

[past totem]

event end play?

[harsh ice]

Yeah

I did in game mode

I created a custom event and ran on the server. That event is destroying weapons

[past totem]

what

add the event end play to the pawn

not gamemode

[harsh ice]

Ahh now i understand

[past totem]

game mode is server

but thanks actually, that just made me realize that my weapons were staying in game after a player was leaving.

[harsh ice]

What ?

[past totem]

I just mean that I realized I have the same issue in my project

[harsh ice]

You have the same problem too ?

[past totem]

well I just never implemented it

but what I said should work

[harsh ice]

Did you fix it ?

[past totem]

I will now

[harsh ice]

So i have to call the event an endplay in the character blueprint ?

[past totem]

yea it works I just did it

[harsh ice]

I just saw a project and they called in gamemode or player controller

[past totem]

best is to do it in the character

[harsh ice]

It doesn't work in game mode so maybe this will work 😂

[tribal mango]

Thing is, when I do that, because the player client sends the location of the player to the server it means:

1. player1 grabs player2 on his client
   (they are performing an animation togather where player1 drags player2, so their position also keeps updating controlled by player1)
2. player1 sends keeps updating the location of the now combined meshes of the two players, to the server for a period lets say 10 seconds
3. the server sends the location of player1 to player2 which also performs the meshes attachment of player1 and player2
4. the location keeps updating: player1->server->player2 for 10 sec

starting to write this I was skeptical but as I was approaching bullet 3 it all started to make sense
and it might work

[past totem]

thanks for the info

just try and see what works

[tribal mango]

Yeah I need u to verify what I have written

😄

[tribal mango]

have no time to waste man <#

❤️

thats why i love to plan

[harsh ice]

Does this work waffle ?

[tribal mango]

Hmm im gonna give it a try soon and will report back

it will work for sure the thing is I am a bit concerned about network delay that's all.

thanks you guys I really appreciate the time you took to help me figure this one out

[harsh ice]

You had the same issue ?

[past totem]

well I'v read it, it sounds like it might work, or might have desync issues, but u will know once u try

[past totem]

bro he is talking about something completely different
and I already told u how to fix ur issue, I just did it in my project and it works

[harsh ice]

I appreciate it's bro

Just i got curious

[past totem]

okay

[tribal mango]

spank u ^_^

[stoic lake]

Hi im trying to use a servertravel command, however it only works when the net mode is set to standalone. It doesn't work when I have net mode set to listen server

does anyone know why?

[past totem]

servertravel only works in standalone

according to google

"Hey I just tried this for the first time and it seems server travel does not work in all preview modes, but it does in standalone mode."

this is what I searched btw

[stoic lake]

well the problem is that im trying to get my product approved for the marketplace, however this is the point my product is failing on:

Which means the reviewer tried the product in editor.

[past totem]

well there must be a way to tell them that they are wrong

go to #fab

[stoic lake]

alright, thanks for your help

[tribal mango]

WORKS ❤️

looks good

lesson learned (

the millionth time, sometimes its faster to just check it out instead of speculating. am I right

[past totem]

nice make sure to test with network simulation enabled tho

[tribal mango]

running on dedicated server built from source

15 hours of building from source

[tribal mango]

i'm a noob, is that an option I can toggle on/off?

network simulation

how does this coexists with ROLE_SimulatedProxy ? does it affect it, I mean I know its smth other then authority but the fact that I have this means I am on simulated network because I can see / use simulated actors

do u mean network simulation as in physics simulation on the server or smth? sorry I'm kind of lost

[past totem]

it's in the project play in editor settings

editor preferences*

[tribal mango]

oh and it simulates lags and packets and stuff>>?

[past totem]

yes

[tribal mango]

like not on lanohhh

lan*

ohh

thanks man !!!

wow assuming u are a man is not nice so whatever u are u are awesome!

wow my game is shit on real network

gonna work on that

[past totem]

😅 okay sure yes I'm

probably like 99% of the people here are

imagine girls coding

😅

[tribal mango]

haha

but yeah thats not a nice thing to say dude

and I know some real good female devs

[past totem]

yea just jokking

[tribal mango]

i know i know

[tribal mango]

thanks mate gonna report back with the results asap

[cold moat]

can replicated variables be private? 🤔

[latent heart]

Yes

[cold moat]

on other engines I used and hated they couldn't hm

oh awesome

[quasi tide]

Wouldn't make sense if you couldn't.

[latent heart]

You said they fixed it. Did they rmeove it?

Heh

Is it ever called in the class?

[quasi tide]

More of a PB&J kind of person myself

[latent heart]

I had this lovely cheese and onion sandwich the other day.

[lone kindle]

I am willing to pay for multiplayer replication tutoring if there are any experts in here.

[past totem]

be more specific what u want to learn exactly and how much u want to pay and how many hours and in what format and then probably go to the #freelance-jobs channel

[quasi tide]

In my experience, the people who offer to pay for private tutoring can't actually afford an expert's price.

[lone kindle]

Sucks for you?

[quasi tide]

Not really. I'm not the one in need of private tutoring 😛. But #freelance-jobs is a more appropriate place to post for these kind of contracts.

[past totem]

help me decide which gun position looks better

https://gyazo.com/76738df59d17a4f1eeb206e42e8f0e43

first or second

I switch mid way

[quasi tide]

I think it's so closely similar it is hardly even noticeable

So, doesn't matter

Final answer

[past totem]

I'm terrible at this it has to be as perfect as possible

I can't just choose a random one

[quasi tide]

I just flipped a coin. Coin said first.

There, I chose randomly for you.

[past totem]

but I'm leaning towards the second

oof

[quasi tide]

You don't have to trust the coin.

[past totem]

but I'm not sure

[lone kindle]

Does anyone here offer tutoring services for multiplayer replication? I have stuttering issues on spell casts and movement. Instead of just fixing some issues for me I want someone well versed in the process to teach me along the way.

[quasi tide]

Again - #freelance-jobs

[lone kindle]

It doesn't work.

[quasi tide]

Or, you can just describe your problem here and people might be able to help

[lone kindle]

No, I explained what I wanted. You can ignore my posts as you are too arrogant to understand what I want and that /freelance is not working according to the instructions unless you know another way to post in freelance.

[quasi tide]

Huh - worked for me

[lone kindle]

Yes it worked after the third time, thanks. You can see me posting /job freelance in general chat.

[past totem]

I'm pretty sure once it works we can't see it

[lone kindle]

What do you mean by that? It's already posted. You have such a shitty personality.

Posted well before you comment.

[quasi tide]

Dang - imagine trying to ascertain someone's entire personality based on like 3 statements.

[lone kindle]

No, the conversation continued in general chat.

And in private chat.

You're moving up there with him.

[quasi tide]

https://tenor.com/brpF1.gif

[past totem]

lmfao

I'm merely pointing out the fact that commands that work can't be seen by other people, so if u posted /job freelance and it worked, we can't see it

[past totem]

but there was only one line there

[lone kindle]

As an example of it not working.

[past totem]

yea and thats'; why we were able to see it

[lone kindle]

Then I apologize for that particular misunderstanding, I thought you were referencing my post in freelance jobs.

[past totem]

it's all good it was funny

[lone kindle]

You refuse to answer a simple question. You do or you don't, whether you tutor me or not is a different question.

[past totem]

but how would I know if I would tutor you or not if I don't know what it's about

I couldn't answre

[lone kindle]

That is not what I asked.

Yes you can.

I did not ask "Will you tutor me?"

[past totem]

your question was too generic and this discussion is neither interesting, funny, or has any point

why's that ?

Ik it's neded for dedicated servers but if u r using listen servers maybe it's not needed?

[graceful flame]

So you can have a separate client and server target build.

[lone kindle]

I've read a lot of it, I have multiplayer running in my game, most things work, I have issues. Most resources seem to either bee to generic for my understanding or too specific to not relate to what I am doing. I can and will continue to push through this and learn, but I am asking if someone is willing to offer tutoring services to me.

[quasi tide]

What - the tutor request has absolutely nothing to do with server builds, lol

[lone kindle]

No, I am asking for a tutor too look into my examples and show me proper ways of doing things. I do not want a long term partner or employee.

[quasi tide]

No. You don't need a source build for listen server setups. That information being shared is just random information for no reason.

[past totem]

[lone kindle]

I have found 3 and have appointments. Those don't start until next week. I was looking for someone more readily available. Lots of people good at giving bad advice here, yourself included.

[past totem]

u guys just relax

[lone kindle]

I am merely defending my simple requests from snarky comments.

[lone kindle]

No, my questions was very specific and you answered a different question. You were more interested in giving a command than communicating.

[past totem]

you're right cuz I didn't want your dms and neither do I want this discussion

[lone kindle]

Yes, you do. That's you keep replying to my request even though you have no interest in actually tutoring.

[past totem]

nop

[lone kindle]

I posted in freelance jobs, and I did specify more in this channel.

[quasi tide]

#multiplayer message

[graceful flame]

So there's this really neat feature Discord has called "block user". Just saying.

[lone kindle]

I am not interested in solving the problems in this channel, I was interested in finding people wanting to tutor.

[graceful flame]

I heard if you use it properly, then you can totally get on with your day.

[kindred widget]

I always miss the fun conversations. 😦

[past totem]

[limber cloak]

What am I doing wrong? The NetMulticast doesn't work. The code is placed in the Character class and the function was called from the Server.

UFUNCTION(NetMulticast, Reliable)
    void NetMulticastDoFunction(class AMovingPlatform* thePlatform);
    void NetMulticastDoFunction_Implementation(class AMovingPlatform* thePlatform);

void APuzzlePlatformsCharacter::NetMulticastDoFunction_Implementation(AMovingPlatform* thePlatform)
{
    if(thePlatform)
    {
        thePlatform->Test();
    }
}

[plucky prawn]

What do you mean "it doesn't work"? Are the actors you are expecting this to run on net relevant

[kindred widget]

Would definitely start with a UKismetSystemLibrary::PrintString(this, "NetMulticastDoFunction"); above the if statement.

[limber cloak]

basically I have a character class. If I click left mouse button it will tell the server to change the mesh of an actor that is linetraced (the changing mesh part is in the actor class) and it will call another NetMulticast function which is in the character class

the server function works, just the netmulticast doesnt work

server function is placed in the character class, the netmulticast is placed in the character class, but the change mesh is placed in the actor class

[kindred widget]

Start with a print. See if it prints anything using the Kismet print has the benefit of also showing which machine ran it.

[limber cloak]

server runs the change mesh function and the netmutlicast function

[limber cloak]

ok ill try

[limber cloak]

after 20min of compiling.
A text message was printed out to 1 of the client, not the host

[kindred widget]

You should be able to test this sort of basic thing in PIE. Also, you said something about this being for setting a mesh?

[limber cloak]

ill show you the code

I also tested this on host

when the client runs the code, the host changes the mesh, but the client doesnt

when the host runs the code, the client changes the mesh, but not the host

//I call this function from a Mouse button click
void APuzzlePlatformsCharacter::MyFunction()
{
    //The client will call the function
    if(GetWorld()->IsServer()){return;}
    ServerCharacterFunction();
}

void APuzzlePlatformsCharacter::ServerCharacterFunction_Implementation()
{
    FHitResult hitResult;

    FCollisionShape sphere = FCollisionShape::MakeSphere(20.f);

    FVector locationForward = GetActorLocation() + GetActorLocation().ForwardVector * 2000;

    if(GetWorld()->SweepSingleByChannel(hitResult,
    GetActorLocation(),
    locationForward,
    FQuat::Identity,
    ECollisionChannel::ECC_Visibility,
    sphere))
    {
        AMovingPlatform* theMovingPlatform = Cast<AMovingPlatform>(hitResult.GetActor());

        if(theMovingPlatform)
        {
            theMovingPlatform->Test();
            NetMulticastDoFunction_Implementation(theMovingPlatform);
        }

    }
}

void APuzzlePlatformsCharacter::NetMulticastDoFunction_Implementation(AMovingPlatform* thePlatform)
{
    UKismetSystemLibrary::PrintString(this, "NetMulticastDoFunction"); 

    if(thePlatform)
    {
        thePlatform->Test();
    }
}

private:
    void MyFunction();

    UFUNCTION(Server, Reliable)
    void ServerCharacterFunction();
    void ServerCharacterFunction_Implementation();

    UFUNCTION(NetMulticast, Reliable)
    void NetMulticastDoFunction(class AMovingPlatform* thePlatform);
    void NetMulticastDoFunction_Implementation(class AMovingPlatform* thePlatform);

that's on the Character Class

actually, when its 2 players , that's what happens

[kindred widget]

For starts. Probably nothing to do with this issue, but don't gate server like you're doing in your first function. If this is meant to be changed by player, it shouldn't matter whether a player or server calls this first function. Both of them can call the server function. Server simply calls it locally instead of networking it if they're a listenserver. Much less branching in your netcode.

What is Test doing?

[limber cloak]

i removed this

//The client will call the function
    if(GetWorld()->IsServer()){return;}

and the host works totally fine now

when the host left clicks, it changes on all clients

but when the clients, it changes on the host only

[kindred widget]

You're calling Test twice on Server technically. Don't need to call that locally when you have the Multicast there.

[limber cloak]

sorry i was wrong

when the host calls the function

i mean when host left clicks, only the host changes the mesh

not the clients

and also when the clients do that too, only the host changes the mesh

[kindred widget]

Are your moving platforms replicated?

[limber cloak]

yeah

replicated + movement replicated

[kindred widget]

Should be valid on the client then. Bit odd.

On another note though. Are you planning on doing anything besides changing the mesh here?

Asking because your current task is better suited for an OnRep through replication rather than a multicast.

[limber cloak]

just change the mesh

what do you mean OnRep?

im doing this to learn netmulticast

😄

maybe because its pointer ?

i mean

void APuzzlePlatformsCharacter::NetMulticastDoFunction_Implementation(AMovingPlatform* thePlatform)
{
    UKismetSystemLibrary::PrintString(this, "NetMulticastDoFunction"); 

    if(thePlatform)
    {
        thePlatform->Test();
    }
}

the address is different for the host and for the client

right?

could be that I think

[kindred widget]

Multicasts are more for like, playing a quick emote that won't affect gameplay. Or broadcasting random things that don't need state. Your mesh needs state. It should definitely be a replicated asset pointer in the platform. ServerRPC should get the platform, and tell it to change the mesh pointer, then set it locally. Asset pointer can replicate to clients, and have an OnRep that locally changes the component's mesh to the new asset.

The pointer should be fine, that's why I asked if the platform was replicated. Pointers to assets, and pointers to replicated actors/actorcomponents/UObjects are net addressable. They get converted to a guid for sending, and then back to a pointer on the other side of the RPC.

[limber cloak]

this works on all client, including the host

UKismetSystemLibrary::PrintString(this, "NetMulticastDoFunction"); 

[limber cloak]

Does this mean that the NetMulticast works, just cant change the mesh?

or

[kindred widget]

Dunno without testing it. Either the pointer is invalid on the client, which isn't likely if it's a correctly replicated actor and the client can see it. Or whatever you're doing in test isn't correct.

[pallid mesa]

• Multicast/Client RPCs VS OnReps (Towards stateful replication):
  https://vorixo.github.io/devtricks/stateful-events-multiplayer/

recommended read for the use case

[limber cloak]

ok thanks

[limber cloak]

I've learnt something new, but still this isn't my case

my case is, they are all connected

once a player (after they are connected) left mouse button clicks, it should change the mesh for all

[twin juniper]

It’s your case then lol

Use OnRep

[limber cloak]

ok, when do i use netmulticast and when onrep?

can i use chat

onrep?

i mean simple chat system

[twin juniper]

You should have the answer if you just read what vori linked you 🤷‍♂️

[limber cloak]

I did

when a variable changes, it will replicate

even if someone joins later it will replicate

but instead of storing all the messages on a TArray

is it possible to do it with netmulticast?

[latent heart]

I wouldn't use onrep for chat, just a multicast.. maybe even an unreliable one.

Do you need a chat history when a player joins late?

And if you do, probably better to do an rpc to that player of the last x chat messages or something, rather than constnatly replicating a tarray.

[limber cloak]

ty

[plucky prawn]

Forget that, just replicate the server text file that you store all the chat in. Get years worth of chats when you join

Why did you ping me?

I'm not really in a position to check code at the moment

[limber cloak]

ok

sorry

[plucky prawn]

Ping me in like... 5 hours

[gleaming kite]

Whats a good place to bind delegates for clients? PostInitializeComponents doesnt seem to fire on clients for server owned actors, which makes sense but is there a "proper" place/way to bind delegates?

[plucky prawn]

Depends what you are trying to bind. Chances are the delegate you are binding is fired before that function is called

[gleaming kite]

Its latent stuff like match state and what not, nothing immediate. Its on a rep notify so it will always fire for late clients

but that leads to the question, does begin play fire before any repnotifies are delivered to clients?

[plucky prawn]

Are you binding the delegate in repnotify?

[gleaming kite]

no

delegate is being broadcasted in the notify

[plucky prawn]

It's indeterminate

[gleaming kite]

gotcha

[plucky prawn]

I tried figuring out the order of networked called and.. Well I didn't get anywhere. I'd try and think of another solution if you are relying on this. Even if it's janky af, just get it working lmao

I sunk way too much time trying to do stuff the "right" way

[gleaming kite]

yeah.. begin play seems to work fine for me so I suppose I will use that

post login might be a good entry point though

[plucky prawn]

I couldn't figure out how to check if a client has a valid game state and other replicated stuff. Instead of checking it on tick, I overrode all the onrep functions I needed in c++ to set flags, then each time a flag is set I check if all flags are set and if so, I do a server RPC to say I'm ready. It's a stupid solution when I could have done a one liner on tick

[gleaming kite]

Yeah that doesnt sound too bad

[plucky prawn]

I mean i thought it was more elegant than tick because I wasn't doing useless checks in tick, but it was a dumb micro optimisation that didn't matter

[gleaming kite]

its always a struggle to draw the line between good architecture and dumb micro optimizations haha

[plucky prawn]

Comes with experience I guess

[gleaming kite]

definitely

[graceful flame]

So I just implemented object pooling on a laser weapon that has client side prediction to reduce the feeling of input lag, but now the ownership is all screwed up because the server owns both server and client laser beams because they're pooled by the server instead of spawned by a player with a RPC. Not sure what I can do to resolve this other than abandon object pooling for the client. Any suggestions?

The laser beam does a line trace and may or may not continue on depending if it hits a mirror or not. It spawns in a laser beam actor with a mesh, does some distance calculation work then sets the rotation and scale. Only the server side laser beam is being used for gameplay related collision events, the client beam is just for looks.

I used to have it so the client laser beam was only visible to its owner but can't now because it isn't being spawned by the player anymore.

[graceful flame]

I drew a diagram to help make sense of my issue.

[past totem]

And I drew a diagram on your diagram with the solution, thank me later! : )

[graceful flame]

That just brings the network lag back. No thanks.

and im not going to use reliable on tick either

[past totem]

I don't think I can top off that response 🤣 🤣

[short arrow]

make it client side and don't have the server do any of that stuff

[graceful flame]

But its used for collisions to drive gameplay, it must be server side.

And to reduce the player's feeling of laser lag I use a second laser beam that's visible for them only.

[short arrow]

The only thing that technically has to be replicated is the beam you want everyone to see . If you want a lag free experience let the client decide what it hits collision wise

[graceful flame]

I'm just not going to use object pooling for the client side beam. The server beams are pooling just fine now and the ms has been saved.

[short arrow]

and then send that information to the server unreliably

if you're worried about hacks and what not then do as many light weight checks on the server as you can to verify what the client says makes sense

[graceful flame]

The hits are server side, and sfx/particles are multicasted

I'm just going to not use object pooling for the client beam

Those will be spawned and destroyed without replication and since they're a separate blueprint actor there's no gameplay logic happening if it collides.

[short arrow]

yeah I'm not sure why you need actor pooling for a lazer anyway

don't people use particle effects with a line trace for that

[graceful flame]

because it spawns in more and more whenever it bounces off of a mirror

and runs on tick

[short arrow]

that wouldn't pose any problems tbh

you should be more worried about fps rather then tick performance from the laser particles

[graceful flame]

That's why I added pooling

tick times were large when I had 4 other AI's using the laser, then with object pooling it went way down

Particles are only spawned in once on hit

The laser beam is a mesh

[short arrow]

What exactly do you have on tick that could be so expensive for a laser?

aren't you just line tracing, or sphere tracing?

you should be able to have 10,000 lazers on tick

[graceful flame]

You can follow along if you'd wish: https://www.youtube.com/watch?v=EM1MkdDW0Ic

[short arrow]

I mean you'd have 2 fps probably from the particles but tick wise wouldn't be a problem

let's see here

[graceful flame]

I used that as a starting point, and added a second (client only) laser.

I plan on adding particle effects during warmup, and cooldown and maybe some near the muzzle while the laser is on but not as the primary component.

[left lance]

I'm using the default template in UE4 and I'm getting some very slight rubber banding on my character class when I walk around with AddMovementInput. E.g., Client 1 watches client 2 move, when client 2 stops, client 1 sees them move forward a bit more and then correct back to actual position.

However, I don't see this behavior when I'm looking at the third person template. I have no idea why I see it in my project, but not others. I'm testing via 2 clients in editor.

Does anyone have any suggestions?

[graceful flame]

Are you using the CMC (Character Movement Component)?

[left lance]

Yep - it's just the base Character class - no additions to it other than movement input

[graceful flame]

Using default values for tick and network update frequency?

[left lance]

Yep!

[graceful flame]

Are you emulating lag?

[left lance]

Not intentionally - what's the setting for me to double check that?

[graceful flame]

search for "network" on the editor preferences

[left lance]

Network Emulation is disabled

[graceful flame]

there's only a small part under the heading Level Editor - Play for some Multiplayer options

If you play the game with p.netshowcorrections 1

Do you see lots of capsules?

[left lance]

Nope - don't see any capsules actually

[graceful flame]

so its not server corrections, its something else

If you make the character's capsule visible, and use p.netshowcorrections 0 does the capsule have the issue? or maybe its just the skeletal mesh and some animation causing the problem.

[left lance]

It's hard to tell... But I think no. The item that's rubber banding is a static mesh that is a child of the skeletal mesh (but the skeletal mesh is set to be None) Would that cause anything?

[graceful flame]

set to be none?

[left lance]

As in I'm not setting the skeletal mesh on the character

[graceful flame]

So the static mesh is a child of none?

How does that work?

[graceful flame]

will there be a skeletal mesh in the future?

it seems like if all you're doing is adding a hat, then the hat should be a child component attached to your character

[left lance]

No, TLDR - this will be a VR game, but I need a PC character for easier testing

The hat is so I can visualize

[graceful flame]

So when you move the hat lags behind?

But what bone is the hat attached to if there's no skeleton?

[left lance]

More like when I stop the hat goes to far and then resets

No bone, just standard parent/child

[graceful flame]

Maybe it's easier to make a new Pawn and then add your Hat mesh and the CMC?

So there's no empty skeletal mesh

[left lance]

I'll give that a shot 🙂

[graceful flame]

and capsule

oh I guess you can't add the CMC to a pawn without using c++

but then again why would anyone want to do that, when they could just use a character class....

@left lance what if you make the hat a child of the capsule and not the skeletal mesh?

[left lance]

It gets a better when attached directly to capsule, but still there a bit

[short arrow]

alright sorry, I needed to finish up with my own work. that video took 50 minutes and I don't understand why

I went ahead and made a fully replicated laser beam that could bounce off mirrors like you wanted, and it uses minimal replication

https://gyazo.com/a869c57db93c5bfff0a82b83fce15b70

The first laser is spawned by one replicated actor, after that all other lasers are calculated and created on their own by the client, so the server never has to send any information about it.

the only thing that get's replicated is when a lazer actually hits an object that should do something (which is checked by the server)

it only took about 10 mins to make, if what's in the video is what you were looking for then I can send you the code

you should be able to have as many mirrors as you want bouncing off of eachother without any problems

[graceful flame]

Oh cool, you didn't have to make anything lol. But also could you test with emulated network lag? Is there any noticeable lag when you enable / disable it? What about when moving around does it lag behind?

[short arrow]

With clients having bad lag the end result of the lazer will always wind up being the same, but ofcourse will take longer to reach the end point

same with the box, the color might change slightly late, but it will always end up the same color

@graceful flame https://gyazo.com/fc16362ae64e2807dd432cc75b2a465e

[graceful flame]

oh that's close to what I've got going on here, but what I'm going for is more like the lightning gun from quake that also bounces off mirrors for bonus damage

So to reduce the client side feeling of lag due to the network having to replicate I make two beams, one is client only and doesn't replicate while the real server one has its mesh hidden for the owner.

But then with object pooling it stops working for the client beam because now the server owns them, so I just decided to spawn / destroy that one instead of pooling it.

[short arrow]

the only lag you're really seeing here is client 2 waiting for client 1's rotation to be updated

you can't make that feel any better, unless you somehow could predict which way client 1 is going to rotate

[graceful flame]

Im curious to see what you've made though

[short arrow]

sure, maybe it'll help

[graceful flame]

Can you share via https://blueprintue.com/ ? or was it c++?

[short arrow]

@graceful flame
Character: (replicated, has beam component)
https://blueprintue.com/blueprint/3virh7_a/
Mirror: (not replicated, has beam component)
https://blueprintue.com/blueprint/7u3hos1q/
Replicated Box: (Replicated)
https://blueprintue.com/blueprint/x8en_hz3/

The lasers are instant and have no log in-between hitting the mirrors because they already exist and are ready to go. none of it requires replication

I don't think it can get any less lag free

because it's already completely client sided

[graceful flame]

I don't know my way around cascade particles, what does your particle system look like? The sharing website doesn't come with components.

I only know Niagara 🙂

[past totem]

we are viral on reddit
https://www.reddit.com/r/unrealengine/comments/xpz028/ue_community_support_be_like/

[loud frost]

, when a client pick weapon it will only show in server , not in client , can you plaease tell me where it should be a mistake , like in repNotify or ny other thing

[rotund cosmos]

Hey Guys. Are the replicated variables set in PlayerState going to persist across levels when using server travel with seamless travel enabled?

[short arrow]

Si

[rotund cosmos]

So I can keep player specific data in it and it will be the same after the level changes, awesome. Ty

[dark inlet]

Hello everyone! Can anyone answer some of my questions about networking in private chat? (dedicated server, collaboration, hosting..)

[bitter oriole]

Feel free to ask here

[dark inlet]

Alright then

For reference: the game we're thinking of making is an FPS Multiplayer, something like DayZ (dedicated servers, no matchmaking)
When working with a team, does everyone need to have the source engine built?

[bitter oriole]

Not everyone needs a source build for that, you would probably desire to have a fallback listen server so that anyone can try multiplayer locally and quickly

As long as everyone understands what they're doing, you can develop with listen server in mind and dedicated is kind of a simplification of that

Then each week or so you could freezer multiplayer work, compile the dedi, debug and test that, and resume work

[livid holly]

Hey all. I'm trying to implement a disconnect/reconnect system. I have based on WizardCell 's guide (https://wizardcell.com/unreal/persistent-data/) but I have some differences: in the game I'm working I do not want to destroy the Pawn on disconnect and re-instantiate it on reconnect.

I was able to override some methods in GameMode, PlayerController, and PlayerState, and it seems to work fine for the server; when a player reconnects, if they have an Inactive Player State, the game mode will get its pawn instead of spawning a new one. The server does indeed find the right pawn and associate it with the re-connecting player.

However, it seems like the reconnected player doesn't properly replicate. Actually I have this issue even when disconnecting

more details: I want something like a MOBA, where if a player disconnects we have an AI Controller possessing it.
That part is working, however there seems to be a mis-communication between server and client. The newly-spawned AI does properly possess the player, but when it does an action that should be replicated to the clients, it doesn't seem to work.

Also, when I join as a reconnecting player, in the server it looks fine but the new client doesn't see the pawn, as if it hasn't been properly replicated

has anyone struggled with that? What is the proper procedure for a disconnect/reconnect involving keeping the same Pawn?

[dry orchid]

thats my code for the action. I dpawning the SpawnCanicaClass from the client to check if the clients rotation was right

and it is, but once the server spawn it it does not

thats the correct code. Anyonw knows why this is happening?

[storm bough]

I am trying to use custom data in player state (PS_Gameplay inheriting from PlayerState) for multiplayer. I have two variables (Color1 and Color2 used to set tint on mannequin) that are set as replicated, but they do not replicate as I expected or intended.

I have setup with listen serwer and two players, host and one client (two separate computers). I set colors in UI widget for current player only. I resolve player state by GetOwningPlayer->GetPlayerState, casting it to PS_Gameplay and SetColor1 or SetColor2. I have in UI list of players and their colors, retrieved directly from their player states.

When I am on host, change of color of host is visible to me (host) and client.
When I am on client, change of color of client is visible to me (client), but not visible to host.

Intended result is, obviously, that any player can change their own color and that change is visible to all players.

I can only conclude I still do not understand something about replication of properties. Only way I can think of is calling server via RPC and server in turn updating color in PlayerState, but... surely you can do that without RPCs?

[livid holly]

I was doing something stupid, forgot to have the Player Controller Possess the pawn.

[past totem]

show ur bps/code bro

Only way I can think of is calling server via RPC and server in turn updating color in PlayerState, but... surely you can do that without RPCs?
it sounds like this is exactly what you are missing. no, it's not possible to send data from the client to the server without RPCs as far as I recall

[storm bough]

that would explain it

[past totem]

replication only works server -> client, not the other way

👍

[storm bough]

so if I want to do on client something important then I always must do it via server?

[past totem]

well depends on what u mean in important but generally ye

[storm bough]

thanks

[livid holly]

I still have a huge issue with the disconnect/reconnect thing. When reconnecting the client gameplay abilities fail. Server keeps rejecting ClientActivation after the reconnection happens

[past totem]

might just be completely unrelated but do you destroysession before re-joining?

[livid holly]

no. I'm using the disconnect and reconnect commands

[past totem]

ok Idk what u mean so I prob can't help

[livid holly]

unreal has those exec commands that simulate a disconnection and a reconnection. If I disconnect the player and try to join the session in the "regular" way, it doesn't work (at least in OSS Null) because it says it already has a named session. But if I use reconnect then it works

[vagrant falcon]

can someone give me a hint how to replicate variables inside of local player subsystem

[winged badger]

Have an Actor replicate them instead

You cant replicate ULocalPlayer

Or its subobjects

[vagrant falcon]

will it make a trick if i make abstract class of it?

[winged badger]

Nothing to do with sbstract classes

[vagrant falcon]

k thanks

[winged badger]

Teplicated variables font really belong in locsl player subsystem

[vagrant falcon]

i'm making system to manage assets SM, SK and etc

with soft refs

[winged badger]

That should definitely not be networked

[vagrant falcon]

i though i will record an array in game mode of assets currently in use and when i'm connecting to server i will sync array and load those assets

it should support preload as well

[winged badger]

If its currently in use might as well ise hard refs

Preload is different matter

But anything doing sync load

[vagrant falcon]

async

[winged badger]

Will flush your async loading

And at the moment of connecting, something will sync load something

Undoing your system in the process

[vagrant falcon]

damn, how can i bypass it 😦

[winged badger]

Preload does work

But that depends on knowing assets in advance

[vagrant falcon]

i was planing to make TMap's like FString, SM inside of data asset that containts all assets data
and preload/load by key

[winged badger]

Then you csn ptrload in lobby anf keep asset pointers hard refd

[dark inlet]

Sorry for the late reply. Will the listen server allow us to join from different networks? (Everyone from their home)

[vagrant falcon]

as soft references

[winged badger]

It doesnt matter, as long as you can do NAT punchthrough

Dedi or listen

If you preload, you want to keep hard refs after

So they dont unload

[vagrant falcon]

mby gameinstance subsystem ?

[winged badger]

Then clear the when no longer needed

I use asset manager

[vagrant falcon]

does it work well ? cause last time i was looking on it and it was a little bit complex for me xD

[vagrant falcon]

thanks for hints, i will take a look on assets manager

[toxic dagger]

Hi, when spawning an actor it doesn't show up on the client it only does for the server.

This is my spawn code:

void APlayerCharacter::SpawnEquippedWeapon_Implementation(UClass* Weapon)
{
    if (EquippedWeapon) return;
    if (!Weapon) return;
    TSubclassOf<AActor> ActorClass = Weapon;
    EquippedWeapon = GetWorld()->SpawnActor<ABaseGun>(ActorClass);
    EquippedWeapon->SetOwner(this);
    EquippedWeapon->AttachToComponent(SceneComponent, FAttachmentTransformRules::SnapToTargetNotIncludingScale);
}```

[quasi tide]

Make sure the actor is replicated.

[toxic dagger]

In the constructor of the actor bReplicated is set to true

[worthy magnet]

I am using a dedicated server and one client sees everything with a lot of lag and the other sees just fine. Why is this?

[dark edge]

What's the difference between them? The laggy client and non laggy client both on lan or is one in China or what?

[worthy magnet]

Both on my pc testing in editor

[past totem]

have you tested in editor with 'network emulation' on in the editor preference?

[opal fox]

im trying to fire this sound and animation on clients, am i doing this correctly?

Im only trying to get the onrep event to do what it says in it, on clients

[worthy magnet]

No, what is that

[past totem]

my advise is quit and become a photoshop artist

[signal lance]

Hmm that does look fine
Is the component being properly replicated?

[opal fox]

@signal lance why must the component be replicated?

[past totem]

wdym why ? do you want to ask the ue engineer that was responsible for designing the replication system? it's just how it is

[opal fox]

@past totem very funny dude

[signal lance]

You have a replicated variable on the component, for it to do anything the component itself needs to have replication enabled

[opal fox]

i just didnt comprehend it as the component needing replication

since it has an owner who is replicating

[past totem]

happy to entertain

[signal lance]

@past totem stop, ty

[opal fox]

ok so the owner replicating isnt enough

im gonna try to replicate the component aswell, sec

@signal lance thanks dude that seemed to do the trick, i thought i was going insane. Im sure I did read that if the owner of an actor is replicated you dont need to replicate it

but I might have misread that, need to double check what the rules are for this

says this in the documentation

Components replicate as part of their owning Actor.

[signal lance]

Yeah basically all replication is handled through actors, when the actor replicates it also gathers replication data only from its replicated subobjects so keep that in mind

It won't replicate anything from a component if the component isn't set to replicate

[opal fox]

I see

I also read this

Static components do not need to be made to replicate to exist on clients; they exist by default. It only needs to replicate when properties or events need to be automatically synchronized between server and client.

Dynamic components are components spawned on the server at runtime and whose creation and deletion replicate down to clients. They work very much in the same way Actors do. Unlike static components, dynamic components need to replicate to exist on all clients.

@signal lance appreciate the help, works fine now following those rules

[signal lance]

Yeah static components are ones that are created together with the actor, either added in bps or in constructor

[oak prawn]

I don't have this event, we both use the same plugin?

[pine reef]

Guys, how to replicate a variable to late joiner?

[oak prawn]

I don't have these parts

[past totem]

@oak prawn google advanced sessions plugin

[oak prawn]

if you have the link of this plugin can you send it to me 😄 @past totem

I downloaded this plugin but I don't have it

[oak prawn]

.

[past totem]

looks correct

maybe u downloaded it wrong

maybe u put it in the wrong path

UR Project/Plugins/[these 2 folders]

[oak prawn]

there are other things join session create session etc but they are not the only ones

I assigned the events myself 😄

[dark edge]

Just replicate it. They'll have it

[royal isle]

Hey guys. Is there any resource whatsoever on the new Iris Replication system? From what I can see not even the source code has all the needed documentation at this point but I was wondering if I missed something.

[chrome bay]

Not yet, it's still in development

[plucky prawn]

wait theres a new replication system?

[royal isle]

Yeah it is announced in the ue5 roadmap although it is still super experimental. Supposedly it will be a lot better at handling more players per server instance among other things than the old one

[plucky prawn]

🤔

[royal isle]

From the roadmap.
You can find some source code in the ue5-main branch under Engine/Source/Runtime/Experimental

[plucky prawn]

very nice

that experimental tag wont stop me shipping it though

[graceful flame]

https://giphy.com/gifs/billy-mayes-1hMjJILpxoWpQad37L

Iris will be like this ^ right?

[twilit radish]

Convenient for a certain game with lots of players I suppose 👀

[zenith wyvern]

I feel like I'm doing something wrong. There are a ton of UI actions I want to perform, as well as from other not 'owned' actors, so I have trouble with actually calling things on the server

I'm making passthrus on my controller just to call every function, like on the left

the right is about to get the same treatment, but hoping for better solution

[sinful tree]

Your inventory component should be using OnRep variables to replicate changes to your inventory. The OnReps can call an event dispatcher that your UI can bind to so it can update itself.
The component, if attached to a player owned replicated actor (like player controller, their controlled pawn, or playerstate) can then RPC to the server itself.

[zenith wyvern]

but, im calling these from ui/buttons

so its all calling from a client, which doesnt happen on server

[sinful tree]

Right, so your UI would need a reference to the player's inventory component, and call the necessary RPCs on the component.

[zenith wyvern]

thats what the call to remove is doing right now

and inv comp has comp replicates on

oh i bet its a function huh

it is! ill fix that

[past totem]

Hi, how do I get the local player num?
Without any input this works for the client player, but not for the listen server player, gives this error:
LogOnlineVoice: OSS: Invalid user specified in RegisterLocalTalker(1)

[zenith wyvern]

How can i manage 'local' variables when I have to use custom events instead of functions, without it getting messy. seperate graphs?

[past totem]

collapse nodes ?

and you can still use functions, but they have to be after the event

[chrome bay]

Just have the event call a func

Quite bizarre how the engine doesn't allow BP functions to be RPCs

[past totem]

ye lol

[past totem]

ok hopefully I found it

[zenith wyvern]

Datura, I made it a server RPC on the replicating component, and it doesn't fire after being called in UI

[quasi tide]

My theory on why they decided to do it that way is to ensure that someone doesn't try to have an RPC with a return value.

Events have to be void

[chrome bay]

ahh yeah for sure

[quasi tide]

Sure they could've parsed the function to make sure it didn't have a return value. But that may just be more work overall 😅

[sinful tree]

Getting any errors? Can you show how you're calling the RPC in your UI?

[past totem]

when checking on the server, what node to check if this player controller is the listen player that's hosting?

[sinful tree]

You can try these. May be a good idea to create a custom Actor macro or somethin.

[royal isle]

If you are already on the server then the player controller at idx 0 will be yours (not always but should work unless u do splitscreen or smth). Unless you are running a player controller iterator which I am not sure if it is available in BPs but if it is and you are you should be able to just compare the local player controller with the iterator element

[past totem]

Is Server doesn't work for some reason, it's executing as true for the client (editor & packaged) oh nv u meant that for checking if it's a listen server

I will try the second solution thanks

[past totem]

works thanks

[past totem]

kinda no clue if what u meant wouldve worked, but is local player controller node worked, thanks tho

[past totem]

Listen server:
how can I execute only on the owning client from event tick?

so like I have something that I want to run only on the owning client and not the listen server

oh, has authority. right.

wait but has authority doesn't work if the owning client is the host

so I need something else

ok I figured it out

[steel fractal]

hi everyone, im trying to figure out why dropping my weapon with physics wont work. The physics works when i enable Start Simulate physics from the details panel. But not when i call this code.

well i disconnected mc_drop in the piture but i had it connected when i tried to do it lol, i just removed it to test some stuff

[past totem]

did u check that the actor is not null ? and that the multicast is executing on the client & server ?

[sinful tree]

Why not just do these things on the begin play of the item that is dropped?

[past totem]

also physics on MP shouldn't have collision unless you are gonna sync the server position to the client

[unkempt tiger]

Gameplay tags replicate in a it-just-works style, right?

[steel fractal]

true dat except if you start with the weapon itll fall out of my hands

[steel fractal]

welp did this, and it is returning null. guess i gotta rework some stuff

[sinful tree]

Add a boolean to your weapon, set it to "exposed on spawn" and "instance editable", name it something like "ItemInWorld". Refresh your spawn node, you'll now have that boolean available. Set it true.

In the begin play, do a branch based on that boolean, if true, run those commands.

Oh, and mark the boolean as replicated.

[steel fractal]

I will try that and give it a shot, thank you

[wooden cypress]

Does anyone know if the Advanced Sessions Plugin can only be used with two people from the same country?

[junior temple]

Hey there, how can I make actor/area appear blue or red depending on which team unit is on it?

[dark edge]

Set color or material based on a repnotify of the team variable

Set team variable whenever someone enters or leaves

[junior temple]

idk what repnotify of the team variable means, could you please link a tutorial of some sort that would send me in the right direction?

ha just noticed your name

[dark edge]

@junior temple repnotify is the best.
https://docs.unrealengine.com/4.27/en-US/Resources/ContentExamples/Networking/1_4/

[junior temple]

Thank you, yeah i just searched and found the same thing. Appreciate it

Wait so how does this help me? Whats a team variable and how do they go together? I still dont understand the basics of how this would setup

example talks about streetlight changing on delay

[quasi tide]

Part of my team is in a different country. We were able to test fine.

[wooden cypress]

oh ok nice ty

[dawn ledge]

@junior temple your team variable could be a bool, int, enum, or however you wish to represent which team something belongs to.

RepNotify is a method of replicating variables across a network, so that the client and server are synced with the same value as best as possible. You should read up on what replication is and how it works. I recommend searching for Cedric's UE networking compendium and reading that

[loud frost]

bReplicateMovement showing error in actor

[junior temple]

cedrcs compendium says you need to know c++, which I dont. Ill try to search the other stuff you talked about

I mean how do you even setup multiple teams to begin with before assigning variables and stuff

[graceful flame]

You can start out with making your first GameMode and GameState blueprints. Right click inside the content browser >>> Blueprints class >>> GameModeBase and again for GameStateBase.

The GameMode (server only) is where you can define the rules and win conditions of your game. You can think of GameModes like the differences between TDM, FFA, KoTH & CTF.
The GameState is where you can keep track of team scores and round timers...etc

So to answer your question how to setup multiple teams you can define some variables inside the GameMode blueprint to handle the data that makes up what a team is. Number of Players Team A, Number of Players team B. Then you can further define rules with simple booleans such as "ArePowerWeaponsAllowed?" that sort of thing.

Then later when you get around to making the various actors in your level they can reference data from the GameState and GameMode to alter their behaviour.

[junior temple]

I think I understand, but so then how/why would you use gamemode and gamemodebase seperately? Also, how would a blueprint for the gamemode look like for lets say 2 player game like chess with spectator slots as well?

and would the gamemode blueprint be on client or server and how would you do that?

[graceful flame]

The GameModeBase is just what you select when you're making your own GameMode.

[junior temple]

oh ok

[graceful flame]

GameMode lives only on the server, but the GameState lives on both sever and client.

[junior temple]

so then I set gamemode blueprint when building a project with the server stuff and it automatically goes to server

or do i have to deploy a different thing on the server seperetaly

[graceful flame]

One of the steps is to separate your build into client and server targets, then only the server executable is uploaded to a dedicated server, and the client exe is uploaded to Epic or Steam or whatever.

[junior temple]

so Im building two games basically with two different set of rules?

[graceful flame]

No

[junior temple]

so its not two seperate projects?

[graceful flame]

There's only ever one real simulation and its on the server. Clients are just running their own simulations and replicated data flows down from the server to the client so that on their computer they see the other player characters moving around on their own.

https://docs.unrealengine.com/5.0/en-US/setting-up-dedicated-servers-in-unreal-engine/

[junior temple]

ok so im not making two seperate projects then

[graceful flame]

correct

[junior temple]

but using one project to upload something to a server

then giving the rest of the game to the client?

[graceful flame]

Before you compile your game you have to setup a separate server target if you plan on hosting with dedicated servers.

If you are using listen server then there's no need for separate server / client builds.

[junior temple]

no i need a seperate dedicated situation

[harsh ice]

I have created a dedicated server game with aws but how can I create a new session or something after max player join is filled

[junior temple]

and for testing ill prolly be using aws free version

[harsh ice]

I am doing the same

[graceful flame]

Server testing is probably one of the last steps though

Because you want a playable somewhat bug free game before you upload and start consuming AWS free tier credits.

[harsh ice]

Now I just need to know how i can create a new session after max player number is completed

[junior temple]

yeah exactly, see im still lost at what i exactly upload to server, like how does the server get the game?

[graceful flame]

Have a read through that link I shared

[harsh ice]

Aws will give you virtual computer

[graceful flame]

you just edit like one file and then when you compile your game it separates them for you

[harsh ice]

You can run the server there and close the virtual pc

You have to put there ip address in your game

[junior temple]

oh ok, I think im starting to get a bit of the picture here

[graceful flame]

Dedicated server setup is probably one of the last steps though, you can test your game with PIE for most client stuff, then standalone mode to test with Epic/Steam integration and hosting / joining sessions then finally a real server build and friends to test with for an alpha.

[harsh ice]

Do you know anything about this ?

[graceful flame]

No I haven't started with AWS dedicated server hosting with my game yet

I only know the main steps, not the fine details.

[junior temple]

oh ok so whatever this setting is, it produces 2 versions for you?

one for the server and one for steam clients

[graceful flame]

Yea, the server runs a headless version of the game. Just a terminal, no graphics.

[junior temple]

that makes sense

[graceful flame]

And since the server doesn't have any graphics to render it can run the game faster without having to require really fast specs. Servers can host multiple instances of the game at once so you can squeeze more out of them for a cost savings.

[junior temple]

and unreal engine is doing all the work for you in producing this version?

[graceful flame]

But there's definitely a challenge in finding out what are the minimum required server specs for your game and that can change depending on how many instances per server you want to run

[junior temple]

what do you mean instances? use chess with spectators as examples

[graceful flame]

Yes and no, you still have to think about your game in a multiplayer kind of way while the engine can just make it easy to compile a headless version for you to upload on a server.

I can't just use chess with spectators as an example because that's not a real game with a frame rate and blueprints ticking all over the place...lol

[junior temple]

ah ok fair enough

but i mean by minimum specs do you mean how many games in one server?

[graceful flame]

But yea the most important thing to understand is that only the server is running the real game. All connecting clients are simulating a network lagged version of the game on their machines.

[graceful flame]

I mean the server specs, CPU & Ram

Since AWS has so many options you have to determine the best option yourself using your completed & compiled alpha version of your game. You ask some friends to join you in a session and see if the performance drops.

It might be more cost effective to choose AWS server option (a) and use 10 instances of your game with 10 players per instance or maybe its cheaper to use AWS server option (b) with 2 instances of your game with 10 players per instance and then spin up additional option b servers as needed.

That all depends on how demanding your game is for the server to handle without dropping below a playable performance level while under harsh testing conditions. (ex: 10 players all spamming projectiles at the same time, that sort of thing)

[junior temple]

gotcha ok that makes sense, so if its a 2 player RTS game, itll occupy 2 slots per instance (or more if spectators) but the server will have to take the load of all the units, movements and stats?

[graceful flame]

The trick is to design your game in such a way that reduces the amount of work the server has to do while also ensuring that critical gameplay logic is handled only on the server so that cheaters can't run wild.

Same thing goes for the data that must traverse the network, you can use things like net cull distance, update frequency rates and relevancy to reduce the amount of data that flows between server and clients at any given moment.

Players on other sides of the level don't need to updating each other's data as frequently or at all until they are closer to each other. That sort of thing.

Meanwhile the server keeps track of where they are in the world at all times.

[junior temple]

So would that be the replication settings?

for the basic stuff

[graceful flame]

So for an RTS game if you have something like fog of war, then the client's don't need to be constantly updated for all units in the game, only the ones visible to them matter, but the server keeps track of all.

Replication is when data flows down from the server to the clients.

As for how you'd actually go about making that I can't really say because again I only know the main concepts, not the fine details.

[junior temple]

ok

[graceful flame]

Have you made a single player game before?

[junior temple]

I do environment art so i only know unreal engine single player capacity

[graceful flame]

okay, just keep in mind that with multiplayer there's also the netbroadcast tick time which eats into the frame budget and can grow rapidly if not kept in check

[junior temple]

how do you keep that in check?

[graceful flame]

By reducing the amount of data traversing the network

[junior temple]

oh ok

[graceful flame]

and by using setting lower update frequencies, using net cull distance, disabling tick, using relevancy

You can even do some funky stuff like bitwise operators so you can compress data over the network

use https://docs.unrealengine.com/4.26/en-US/API/Runtime/Engine/Engine/FVector_NetQuantize/ too

[junior temple]

ok so wait, would the logic for the server updating unit movements, be put in the gamemodebase blueprint?

[pallid mesa]

compressing data doesn't affect directly the netbroadcast tick time. Skipping iteration does tho

dormancy ~

[graceful flame]

yea fair, it should save a bit on overall bandwidth though which adds up overtime

[pallid mesa]

bandwidth is another story that can get mitigated with quantization, normalization and a side-step to server tick optimization

all your advices r coo regardless 😄

[graceful flame]

I haven't made an RTS game but I would probably use a player controller to issue pawn movements via RPCs

The gamemode would be where you define the win conditions. Maybe a boolean such as: AllBuildingsDestroyed? Then whenever a building is destroyed you check if it was the last one destroyed or not and if it was the last one you set AllBuildingsDestroyed? to true on the gamemode which maybe triggers an event on the game state to display a victory message widget on the winning player controller and losing widget on the loser's player controller.

[junior temple]

ok so does the server side game automatically assign playercontrollers to clients when connecting and then just use the logic in the player controller or do we set that up?

[junior temple]

and the cedrics compendium does have helpful explanations

[graceful flame]

Check out page 14 on the compendium for that

[wooden cypress]

is it possible to test the Advanced Session plugin with 1 computer?

[graceful flame]

Event OnPostLogin

[graceful flame]

yea

[wooden cypress]

How? I've set it all

[graceful flame]

Are you using standalone mode?

Two copies of the game running standalone mode, one hosts a listen server session and the other joins.

[wooden cypress]

I'm using steams sub system

[graceful flame]

Exit the editor, right click the .uproject file and choose Launch Game, then do it again.

[junior temple]

@graceful flameThanks for your thorough explanations and answering all questions, this has been quite helpful

[wooden cypress]

Both use the same steam account though

[graceful flame]

that's okay

You can still test hosting and joining a session but not invites

You need two separate machines with two separate steam accounts for testing absolutely everything.

[wooden cypress]

Its finding no sessions

[graceful flame]

Could be due to a lot of reasons

Might want to take your question over to #online-subsystems though

[wooden cypress]

Ok will do, to clarify, using the same machine is not the problem, its my blueprints right?

[graceful flame]

Do you get the steam popup when you launch the game?

[wooden cypress]

Yea I do

[graceful flame]

Did you mark it as LAN?

actually nm lan doesn't matter its a listen server

[wooden cypress]

I followed this tutorial https://www.youtube.com/watch?v=_pPCS12aVtg&list=PLzykqv-wgIQXompUswD5iHllUHxGY7w0q&ab_channel=GameDevRaw

Then just changed the nodes to the advanced nodes

along with other small things required to set up the plugin

I can find the session, I just cannot join it

[graceful flame]

Might be something in the log

[torn hull]

Hello !

I have setup a multiplayer game, I'm trying to run this via pixel streaming
once I launch pixel streaming setup and try to connect via chrome ,for the first connection regular game flow works [host/join game via menu]
when I'm trying to connect via another chrome tab , I can see the game map directly,
every chrome tab session should be able to join the game as different player [this is happening when I create another instance of my game and try to connect via chrome],
my case is with 1 game instance 10 or more people joining via chrome need to act as players

can any of you confirm if this is possible, if yes any references would be helpful

[thin stratus]

I'm relatively sure that pixel streaming is just the hosted project being streamed like a video but interactive. If two Browser connect to the same instance it would show the same.

Guess you'd need a hosted game per player

[torn hull]

Yep , when i launched second game.exe instance i was able to connect

If we go hosted game perplayer when no of players increase resources to replicate games would be huge so i thought
If via pixelstream can we avoid it

[scenic flame]

I have a (hopefully) basic question to ask. How do you track a player ID across a level load? Since my player controller is remade in the new level, the player ID is also recreated, and so I have no way of knowing who used to be who.

[kindred widget]

I'm not sure how you handle this on Null, probably from your own naming/login system or something maybe. But in Steam/Epic, you use their PlayerState's PlayerID

[scenic flame]

I'm not sure I understand the first half, but I am using the PlayerState->PlayerID var. This var changes when I load a new map though, and I don't know how to have that not happen.

[kindred widget]

Not testable in PIE. This value will be the same for the same player when using Steam or EOS

[scenic flame]

I wish I could say we are using EOS, but unfortunately we are not 😦

Do you know any workarounds or techniques I could use here?

[kindred widget]

Do you have C++ access?

[scenic flame]

Technically yes, but I am the only C++ dev on the team, so I just know pushing binaries will cause some issues with the others.

I'm not exactly against it, its just going to be a hassle I would rather avoid.

[thin stratus]

Don't you use the UniqueNetId?

I have never used the PlayerId for anything

[thin stratus]

I don't think pixel streaming magically solves that the game has to exist once per player

[scenic flame]

I didn't know about that var, let me test it out. Do you know if it persists in a PIE environment?