multiplayer

[thin stratus]

Multiplayer has too many things not exposed

At some point you will either need cpp or plugins

Which point that is is obv depending on your game

[livid barn]

Yeah fairynuff. Its already looking like I'll need to roll a custom CharacterMovementComponent and such so position updates correctly without constant position resets

[thin stratus]

The CMC is something I dont touch any time soon

Too many nightmare stories

But yeah if you need movement stuff in multiplayer you probably want to extend the cmc or roll your own solution

[winged badger]

@unique thunder that approach will read the username from PlayerState on the server (which was never set) and then set it on server

add an input of type Text to that SetUsername event

and pass the name you have in your PlayerState at the time you call it

[unique thunder]

@livid barn @thin stratus I'm executing that server event inside my character BP, I tried doing it on beginplay and on possessed. I don't think it's a replication issue because I'm not seeing it myself either. Seems excessive to have to re-authenticate the player or to try and get the data from the database every time they join a session, no?

[thin stratus]

BeginPlay is too early for a ServerRPC i assume

As the player isn't onwing the character yet

Possessed is already called only on the server, so not need for an RPC

@unique thunder Well if you let the Player pass the name to the Server, you allow cheating

So if you don't want players to chcange their name on their own, then you need to retrieve it from the database

It's called Username though, so not sure if you are trying to pass the Username or PlayerName

[unique thunder]

@thin stratus Username, it's a custom Name variable. Basically, on log in (offline) I get access to it and was hoping to set it locally for use anywhere (offline and online). For now at least

Might have to re-authenticate if I can't do that

@winged badger As soon as this event is called, I'm casting to the playerstate and setting the variable locally in the player with a repnotify, setting it to a textrender above his head (prototype)

I should be able to reach out to the database, get the username again and set it there while on the server but if there's a way I can carry that over from the offline lobby to the ded server session, that would be even better

[winged badger]

Login string

haven't used it myself, and not sure you can BP your way through

and its a ServerEvent, which means its not executing locally

[unique thunder]

hmm, if it's a server event and it's trying to access the playerstate

[winged badger]

add input to it

[unique thunder]

might that be why? should I try running it locally and then only run it on server once I get the username?

you mean trigger it on input?

[winged badger]

no, click on the red event node

in details panel you can add input variables

add one of type text

it is literally the only way to transfer data to server with unreal networking

[unique thunder]

should i be running the logic locally to get the username from playerstate and then feeding that into an input on the server event to set it via repnotify, or

[winged badger]

when you have the input added

you just connect the nodes you used above into the Text pin when you call the event

and the ServerEvent (red node) will have a Text output, which you just connect to setter

[livid barn]

What would be a good approach to setting a character's skin material in multiplayer?

Player gets to choose their character material. Bots spawn with a random material.
Initally used a bunch of RPC events to make sure the skin material matches across everyone's client. BUT After a character moved out of network range their pawn is destroyed. When they come back in range they are using the default skin.

Have also started toying with setting the skin on Construction; but thats not copying over correctly to the clients, short of once again making a bunch of RPC calls.
What approaches have people taken in the past?

[winged badger]

you could make a Map with enums to Material

and have a replicated variable for the enum

when its reconstructed, it would replicate the enum variable, OnRep would read the matching material from the Map and set it

[livid barn]

forgot about OnRep. Yeah might give that a go

[winged badger]

Map itself would be const, it would never change, so it doesn't need to be replicated as its loaded directly from package

[livid barn]

currently using a DataTable with all the available materials

[winged badger]

that works too

you just need a key that you can replicate

[livid barn]

Yep, OnRepNotify saves the day 😄

I was previously just replicating the saved chosen skin value

which would be Null (i think) when the character is reconstructed again

[winged badger]

it behaves a little bit strange from BP

as in, when the server changes the value, it will also have its OnRep executed

which is not the case if you use the OnRep in code

even if client changes the value locally, the OnRep will execute on that client

doesn't matter most of the time, but good to keep it in mind

[ember needle]

Still having the issue where when blending to the camera of another player the whole thing is rotated... https://gyazo.com/d0c776cb58cb24c6a92f2c4f0326546d

any ideas of things I could try?

[winged badger]

is it constant, the rotation offset?

[ember needle]

yes

i really don't understand

everything is working including the aim down sight, except that it is rotated...

[winged badger]

do you set that camera's relative transform from anywhere inside the playercontroller?

[ember needle]

no

[winged badger]

or playercameramanager

[ember needle]

it is set in the editor viewport only, never set again.

i also try setting it again, no change

[manic pine]

there's a few problems with this approach though...

im assuming youre using cmc

[ember needle]

i don't know what you're talking about

you don't even know the approach. what is wrong with it. 😃

[winged badger]

in that case you are using CMC 😃

its the movement component on a Character class

[ember needle]

ah sure thing i'm using it

[mellow cipher]

Did you solve the problem?

I know what it is

[ember needle]

me? no i didn't

[manic pine]

the remote clients dont know, by default, the pitch and roll of the character of another client

[ember needle]

watch the video. you'll see that pitch and roll are applied just fine.

except that there's a delta translation applied.

[winged badger]

roll is off

[ember needle]

yes, but it moves correctly.

that's the issue

@mellow cipher so what is it 😃

[mellow cipher]

The owning playing is using the control rotation

Other clients cant see the player's control rotation

[ember needle]

yes they can see it. it's replicated

otherwise you wouldn't even see it moving once dead

[winged badger]

controller is not replicated

[ember needle]

of course not

pitch & yaw are, by the server

https://gyazo.com/5d1cde11ac9e6a619cabc4edaf3e7131

[mellow cipher]

Do you have a custom playercameramanager?

[ember needle]

no

[mellow cipher]

Is use pawn control rotation ticked on your camera?

[ember needle]

yes

again, otherwise you wouldn't see it rotate in the example above 😃

BTW thanks for trying to help... appreciate it

[mellow cipher]

Untick that and see if the top looks the same as the bottem

[ember needle]

I don't even have a playercameramanager set in playercontroller, i've tried both setting it or resetting it to none, same thing

Untick that and see if the top looks the same as the bottem
yes they do!

however it is all unuseable now

[mellow cipher]

You ever used playercameramanager before?

[ember needle]

no

should i?

[mellow cipher]

Thats where I put my camera update stuff

Theres an override function called BlueprintUpdateCamera which runs every frame

[ember needle]

and what should i do in there to fix this issue?

[mellow cipher]

Have you tried to see what its like with those values instead?

Actually you dont need to replicate the Yaw since the actor has that

And if you want theres actually already a replicated pitch called RemoteViewPitch

You need to expose it to BP tho

[ember needle]

so, if i do what you suggest then the replication of the other characters is off

i mean, they do not look in the proper direction

and i still have to keep use pawn control rotation on

[mellow cipher]

Cause the only data you really need is the pawn yaw rotation and the view pitch

[ember needle]

so

pitch is computed as delta

[mellow cipher]

Who do you delta it?

[ember needle]

because it's the value I use just to display the aimoffset

[mellow cipher]

Ahh

[ember needle]

so that other clients see the proper pitch

[mellow cipher]

I just slap that baby in raw

[ember needle]

what

? 😃

[mellow cipher]

This is my function to get pitch

The valid is for owner and everyone else

[ember needle]

so you exposed this getremoteviewpitch

[mellow cipher]

That RemoteViewPitch if you divide it by 255 and times by 360 its gives ya the pitch

Yea

[ember needle]

i'm not getting it

why is this "use control rotation" being on a problem

[mellow cipher]

Because use control rotation only works for the owner

[ember needle]

ah

if i turn it off though everything is... well jiggy

[mellow cipher]

So you can leave the setting on the camera as it is

Your problem is the data you are feeding the camera

Can you do cpp?

[ember needle]

here's what it looks like if i turn it off https://gyazo.com/57ca4e18255d760c16f67a0307cdf7ed

[mellow cipher]

Keep it on for the player

[ember needle]

ok

[mellow cipher]

Make a character cpp if you dont have one and add this to it

    float GetRemoteViewPitch() const;```

{
    return RemoteViewPitch;
}```

You could replicated it yourself but UE already does it so might as well use theirs

[ember needle]

ok and then I use your pitch function?

[mellow cipher]

Yea use that

[ember needle]

how is that going to solve it though if I have to keep "use control rotation" on

oh fuck

lost

[mellow cipher]

You can keep that on

That was just to check what the problem was

[ember needle]

but it won't work on clients, that much i got 😃

so how clients are going to be seeing the correct thing then

[mellow cipher]

If you manually set the camera roation based off that it will

Use the actor yaw and the remote pitch

[ember needle]

ok

[mellow cipher]

That'll give you values equal to the control rotation

[ember needle]

so you mean setting camera rotation onTick?

[mellow cipher]

If you want yea

[ember needle]

otherwise where

just once?

[mellow cipher]

On tick

[ember needle]

ok

well... will try...

thank you

[mellow cipher]

Np

On the character tick you can do a valid check for the controller

[ember needle]

now hopefully i can switch to the character class in C++ all the code I have from a standard character

[mellow cipher]

If its not valid then its a client watching

[ember needle]

ok... will try

having issues with C++ so it'd be fun, just updated from 4.19.2 to 4.20.1

thanks abxyxx

[mellow cipher]

np

[rotund wedge]

i have started working on multiplayer

with steamworks

right now trying to get physics from my actors to work

i decided to do a test with the third person project

i will try to replicate my case there

i found out 2 things

i need the physics mesh to be a root

and i need to have 2 bools on: replicates and replicate movement.

Also i created an actor just like i did in my game

It works

[ember needle]

@mellow cipher unfortunately this is not working, maybe i've missed some points?

https://gyazo.com/5cd4d3211e3b55dcfc34f5265a329a5b

then ontick: https://gyazo.com/4783166d167e3612c9c065d84db2dd36

[manic pine]

instead of getviewpitch, switch it to getbaseaimrotation instead, and set camera world rotation to that

disable camera replication if its on so it doesnt override

its not gonna be good though

[fleet viper]

Hello a while ago ive bought the first person shooter kit which is for multiplayer (https://www.unrealengine.com/marketplace/multiplayer-first-person-shooter-kit) after a while i figured out that i can only find sessions in my network and that the steam subsystem isnt enabled in plugins. If anyone could help me with making this to a real steam based server then i would be glad to meet him :). Its because i want to make a game for me and my friends

[ember needle]

@manic pine you are right, but with some rinterp it does work 😃

https://gyazo.com/146fe71fb95ac20a9d6ba1975d3afd33

https://gyazo.com/8179cd66f09d0d796f53560d3a2098f3

thank you 😃

except that now it doesn't work with the aim down sight camera

😐

[manic pine]

ah, you need camera replication for that?

[ember needle]

i don't know...

https://gyazo.com/43beb28c9aba3403b76e8466dde74718

[manic pine]

try turning it on again and see if it helps with ADS

[ember needle]

it may but the issue is that it's really laggy obviously

[manic pine]

yeah, but just confirm that thats the issue

[ember needle]

ah i think i might know

basically i need to ensure that even when the player enters ADS the spectator also goes there

[manic pine]

right, other clients need to know that that client is in ADS

[ember needle]

they do know

because ADS is a replicated variable

but i also need to blend

lemme try

(thanks BTW) 😃

[manic pine]

yeah, you need to do on the spectating clients whatever youre doing to the camera on the playing client

[ember needle]

one question though

Set View With Blend target takes an actor, not the camera. So shouldn't the view already change if the camera changes?

[manic pine]

what do you mean exactly

if youre replicating the camera?

[humble zealot]

Hey so after 2-3 days of errors etc. I now have a LAN dedicated server

For some reason its not showing on the internet tab

[ember needle]

@manic pine forget it I will investigate

[unique thunder]

Has anyone else used GameLift with GameSparks together?

[manic pine]

@ember needle this is interesting, it looks like there's actually support for this already, but for some reason it's not used by default

[ember needle]

yeah

now I have a very weird thing. I have a variable SpectatingPlayer that gets set when a player starts spectating another player. If I print out the value of SpectatingPlayer on the tick event, it is correct. If I print out the value of this variable on an RepNotify of a variable ADS change event, then the value of SpectatingPlayer is not set. ...wut?

so... this is called on tick

https://gyazo.com/b73af99d647ff12315b675e6d914b1e6

[manic pine]

hmm forget about that for a minute

[ember needle]

https://gyazo.com/75b40c24b8fcf48109a3465396b23f85

[manic pine]

try activating the builtin system for this stuff first

[ember needle]

ok

how

[manic pine]

you'll need to call setviewtarget from the server, not the client

so e.g. when client's character dies on server, fire controller->setviewtargetblend

in addition, since they've for some reason not done this properly, you'll need a tick event on character

if not locally controlled, set camera world rotation to GetActorEyesViewPoint.OutRotation

[ember needle]

not working

it does not change camera

on ADS

[manic pine]

what about the view itself, its good?

it should be perfect

[ember needle]

yes

it's the same as with the other method

called on client

so I am near to closing this but there's this weird thing I was talking about

[zinc zealot]

Guys, i want to make like a lobby setup in wich when three or more players ready up the game starts

where should i put the counter ?

like for the "readys"

[ember needle]

look at the first pinned message

http://cedric-neukirchen.net/2017/02/14/multiplayer-network-compendium/

start there

[manic pine]

alright

you shouldnt have to replicate view target yourself

it'll already be on the client

thats how it knows which characte rto follow

[ember needle]

i don't follow

[manic pine]

so all you need is the ADS rep

[ember needle]

what are you talking about now

getting back to where i was?

[manic pine]

yes

all you need to do is to respond to RepNotify by applying the applicable changes to the camera on the other clients, ye?

[ember needle]

ye not really

that's the issue i'm having

I need to know whether I'm spectating

and I do so by setting a variable, however in the repnotify this variable is NOT the one I save

SO: when I start spectating, I save the variable LOCALLY on the client only https://gyazo.com/6ab3d302101d76c930e90f8d6a37ab2e

If I print this value OnTick, it returns MyPlayer1

[manic pine]

your controller has GetViewTarget

[ember needle]

However, if I print it out in OnRep_IsAimingDownSight this variable is None

WTF?

I still need a way to distinguish whether I am in spectator or not

[manic pine]

getviewtarget->casttopawn->islocallycontrolled

if its not, youre spectating

there's eeven a pawn event

OnBecomeViewTarget

[ember needle]

ok thanks

😃

[bleak lily]

so I have an issue where my character does not get their input disabled or gets a certain component destroyed

oh wait I fixed the disable input but how do I get rid of the component

[icy nacelle]

Having some problems trying to get my players aim offset to replicate.
Here's the function that's running on tick. I'm not sure I quite understand how to do this but this is my guess as to what I need to do. Inside the function it just calculates the two aiming vectors.

(Aim angle is the function I'm trying to replicate)

[manic pine]

you may have remote and authority mixed up there

[zinc zealot]

whats an UMG widget ?

[icy nacelle]

@manic pine still doesn't work 😦

[zinc zealot]

i think i know.

[icy nacelle]

@zinc zealot Wrong section bud.
https://docs.unrealengine.com/en-us/Engine/UMG/UserGuide

[zinc zealot]

ye forget that...

i just wanted a hint but im pretty sure im supposed to use game state right ?

i checked out the compendium a bit

[manic pine]

UMG is for UI, it's not network related

[zinc zealot]

Gamestate is only between one client and the server right ?

[manic pine]

gamestate is for server and all clients

same with PlayerState(but one for each player)

controller is for a specific client adn the server

[zinc zealot]

doesnt make sense...

cause

i did like

a widget

where you press ready

and it triggers an event in Game state

wich adds +1

and when i do it in the different clients and print a string

it only adds one in each client

doesnt sum up

[manic pine]

replication only happens from server to clients

not from clients to server to other clients

[zinc zealot]

but i only want it on the server...

clients to server

[manic pine]

then you'll need to use a Server RPC

[zinc zealot]

thats game state right ?

[manic pine]

but you can only call those on actors that you, the client, 'owns'

which by default is your PlayerController, PlayerState and Pawn(if you have one)

[zinc zealot]

hmm

[manic pine]

i think you need to read up on the compendium some more

it should all be in there i think

[zinc zealot]

but somethings i dont understand to well... or maybe i just need to dwell on it good xD

[manic pine]

yeah, hard to get understanding without using it(and failing a lot)

the general idea is that to get a message to the server, you need to use an object that the server says you own

[zinc zealot]

hmm

[manic pine]

you dont own GameState, the server owns that

[zinc zealot]

so i need to get a way to define a player controller

ahh forget it

ill think about it later i gotta go now xD

thx 😃

[manic pine]

sure

[zinc zealot]

wait

[rotund wedge]

Is there a way i can check if a player is a pawn or possesed?

[zinc zealot]

technically if i use a widget and click it thats a signalright ?

[manic pine]

if you click a widget, the widget blueprint will fire a onclicked signal

just on that widget though, it doesnt travel to the server or anything like that

your question is a bit vague OvO

[rotund wedge]

i have 2 players

and i can see them replicated

all fine

but these clones i see do begin play too...

and they try to create a widget...

and that always fails

So i thought i could prevent them from doing mean stuff

[manic pine]

what clones?

[rotund wedge]

the ones you see on each others screen

there are 2 worlds

4 pawns

but only 2 players ofc

[manic pine]

so, the other client

you have some stuff you want to run on your pawn, but not on his pawn

[rotund wedge]

yee

they dont need widget

what for

it works fine on the players

hng

well thats a workaround...

i shoved a isvalid node between

[manic pine]

you can do a check on IsLocallyControlled

[rotund wedge]

mh

[manic pine]

it assumes the server calls Possess on that pawn the instant its spawned though

which is the default

[rotund wedge]

i still have weeks to learn...

look at dis for example

its called always when the player turns mouse

its for look up and down

what ever i do... everyone has the stutter movement

its totally chaos

[bleak lily]

https://gyazo.com/ee76ee9d88c3ad056286321d3e70eee6

how come it doesnt destroy component

[thin stratus]

Is the Component actually replicated?

Cause you are passing it to the server

and that only works if it' sreplicated

[bleak lily]

well the component is a static mesh

how would I replicate that

[winged badger]

@bleak lily pinned on this channel is Cedric's Network Compendium, please read it

[bleak lily]

what would my thing be tied to

[rotund wedge]

Is a big problem if i set all my replicated funcs to reliable?

[bleak lily]

like I want to remove a static mesh from my actor

and the actor is replicated

[winged badger]

it will become a problem at some point

[bleak lily]

I cant make it replicated

[winged badger]

@rotund wedge

some engine functions are unreliable, like ServerMoveTo in CMC

so its good to use that as a point of reference when deciding what to make reliable/unreliable

[rotund wedge]

i am going to flip here

[winged badger]

there were plenty of people here that had problems because they made everything reliable

[bleak lily]

yeah I dont see anything in it that has anything to do with destroy component

I have the actor already replicated

[rotund wedge]

BAH

i cant even get crouch or sprint to work smoothly

[winged badger]

from what i glimpsed earlier you're in for quite a ride

unreal networking generally works fine out of the box, until you add physics to it

[rotund wedge]

well the physics so far just want to be replicated

i try dis

crouching

but with dis only i can crouch

not client 2

[thin stratus]

That only works on the Server

[winged badger]

and Multicast doesn't Multicast unless you run it on Server

[thin stratus]

It even says so right on the Node

Please read my compendium (again)

[winged badger]

and InputAction is always local

i agree, without reading the compendium you're just wasting your time, and ours

[bleak lily]

my component is a static mesh component

does this mean anything

wait

nvm

I got it to replicate the component

[thin stratus]

Doesn't matter what type it is. But if you pass it through an RPC it needs to be replicated

Otherwise the Server can't connect the stuff you passed to something on his end

[bleak lily]

yeah I found the replicate check

I checked it

yeah it still doesnt get destroyed for some reason

oh I found an error

in the logs

LogActorComponent: Error: May not destroy component StaticMeshComponent /Game/Levels/UEDPIE_1_FirstTestLevel.FirstTestLevel:PersistentLevel.TPSController_C_0.Barrel owned by TPSController_C /Game/Levels/UEDPIE_1_FirstTestLevel.FirstTestLevel:PersistentLevel.TPSController_C_0.

oh I figured it out

I have another issue

LogPawn: Error: DisableInput can only be specified on a Pawn for its Controller
LogNetTraffic: Error: ReadContentBlockHeader: Stably named sub-object not found. Component: [26]TPSController_C_0.[42]NODE_AddChildActorComponent-2_0, Actor: TPSController_C_0
LogNet: Error: UActorChannel::ReadContentBlockPayload: ReadContentBlockHeader FAILED. Bunch.IsError() == TRUE. Closing connection. RepObj: NULL, Channel: 12
LogNet: Error: UActorChannel::ReceivedBunch: ReadContentBlockPayload FAILED. Bunch.IsError() == TRUE. Closing connection. RepObj: NULL, Channel: 12

the second player leaves the session

when an explosion happens

[thin stratus]

You are disable input for the Server pawn here

based on the passed controller

But you can only disable input for the pawn thats controller you passed

They need to match basically

[bleak lily]

so they should both be the same thing plugged in

[thin stratus]

Not the same

A possessed pawn has a specific controller

You can't plugin a pawn for Target and some random controller for PlayerController

You need to get the mathcing one

e.g. by doing "GetController" on the pawn reference

[bleak lily]

how would I do that

oh

I think I got it

https://gyazo.com/a8ffeb83e36effce3435ca91c3faa3ad

would I plug the target here

or keep it at self

I was able to disable input before but now it doesnt work again

[icy nacelle]

I'm trying to work on a system that'll be a radio system that plays various tracks on a loop, which is synchronised for all players. How would I go about doing this? I'm thinking of having actors in the world to act as radios and they're getting told to change track from the game state? Just trying to plan it all in my head first at how this system should work before I try to implement. Any tips?

[winged badger]

make a component for it, in GameState is fine

[icy nacelle]

Now that I come to think about it, lets say I have a very basic system where a track plays, has a delay for the track length, then plays another track.
If a client joins the game, would the client start from the actors begin play or would it find out what the actor is doing (lets say its in the middle of a loop / track) and play from there?

[winged badger]

if you have a unique key for each track, you can just replicate that and OnRep play

you can also have all the radio actors register with it, or its event dispatcher, so you can just call the event dispatcher with track key OnRep and you're all set

[icy nacelle]

Yeah I was thinking of creating a struct for each track, with an ID, name, length and track

Would I need to create something that finds the current track and time when the player is near the radio?

[winged badger]

you'd have to replicate the track key and the timestamp actually

in case the radio actor becomes net relevant

[icy nacelle]

I'm just having trouble imagining how this'd actually work 😛

Sure

[winged badger]

just the key won't sync it if its playing for 2 minutes already

it would start from the beginning of the track

[icy nacelle]

Alright I'll give this a go, thanks 😃

@winged badger Thanks for your help so far, I've made this system that uses rep notify on the actor, so far it worked perfectly in game! I just did a quick test with one client.
Will tidy this up later into functions and stuff but how does it look to you, anything wildly horrible? I've never done this kinda loop before and it feels a bit hacky.

[winged badger]

yeah, that's pretty bad

and it doesn't allow you to change tracks

i would put it into a component to reduce clutter, but that is secondary issue here

make an event dispatcher in the GameState

add inputs of TrackIndex(int) and Timestamp(float) to it

in the GramophoneBP, on BeginPlay, GetGameState->CastToYourGameState->BindEventTo<YourDispatcher>

make a struct containing an int and a float in GramophoneBP

TrackIndex and TimeStamp

make it replicated with RepNotify

in the event handline the dispatcher, just set the struct members by ref

and in OnRep function play the track (with offset for any difference between timestamp and whatever time is now)

in the GameState, whenever you want to change/play the track, just call that event dispatcher with TrackIndex and GetCurrentServerTime, or w/e its called

TrackList should also be a member of GramophoneBP, GameState doesn't need to know it exists, as long as it knows how to provide a valid index

[icy nacelle]

Thanks a lot dude I'll make some changes!!

[winged badger]

(this setup is made to account for your player walking into net relevancy range of a Gramophone, and having the Gramophone play the track from server offset, not from the beginning)

when that happens

ofc, you need to add the logic into OnRep so it doesn't play anything if the difference CurrentTime - Timestamp is greater then track length

[humble zealot]

Has anyone got dedicated servers done with onlinesubsystem ?

[zinc zealot]

Guys

I want the clients to communicate with the server

In a way that when they click a button it adds +1 in a variable

i've been looking in to this and i still dont know what to do

[winged badger]

did you read the Compendium? answers are in there

[zinc zealot]

i looked at gamemode and game instance

[winged badger]

well, what you're trying to do is pretty basic, so read the entire thing 😛

[zinc zealot]

:-:

why isnt there a game instance ?

[winged badger]

also pinned on this channel

https://cdn.discordapp.com/attachments/221799385611239424/370946623070666767/UE4.png

[zinc zealot]

Game instance isnt connected to the server nor the players ?

shared*

what does that mean

i just saw a tutorial and im pretty sure the guy is using the game instance

[winged badger]

it means each machine has its own, its not replicated, it can't even be hacked to replicate

[zinc zealot]

hmm

[thin stratus]

It's not really for multiplayer

[zinc zealot]

:-:

[thin stratus]

It lives from when you start your game to when it ends

So it survives level changes

[zinc zealot]

hmmm

[thin stratus]

Some people use it to save data for when they travel

But well

[zinc zealot]

Im pretty sure that what i want is to send the information to the server

So i want game state ?!?!

[thin stratus]

No idea? :P

What do you want to send

[zinc zealot]

in that "diagram"

nothing says client to server..

i want a place where

clients can sent an output i think ?

thats it..

[thin stratus]

Output?

[zinc zealot]

ye like a press of a button

thats it

[thin stratus]

You can call ServerRPCs in Client owned actors

If that doesn't tell you anything, read the compendium again

[zinc zealot]

so like the crouch thing ?

with switch authority and all ?

[thin stratus]

You don't need switch has authority "and all"

That's really depending on what you do

[zinc zealot]

the thing is

[winged badger]

in fact, connecting HasAuthority>Authority to InputAction ensures no client can ever crouch

[zinc zealot]

i dont know where to "store" information

i meant this with the crouch

[thin stratus]

What kind of information

[zinc zealot]

Its rly simple im pretty sure i did most of it

its when a player clicks the widget

Somewhere! it adds +1 to a variable

i dont know where somewhere is ::)

[thin stratus]

Why so cryptic? What is "a variable"

[zinc zealot]

Interger

[thin stratus]

Yeah sure but it is some sort of score

Deaths

Kills. Gold,

What are you trying to achieve?

[zinc zealot]

Ready

but technically im pretty sure that would be the same place

[thin stratus]

Well if it's something that is only relevant to the Player himself, then PlayerController

If you in addition want to share that state wit hothers

[zinc zealot]

But

[thin stratus]

e.g. show an icon when you are ready, then PlayerState

[zinc zealot]

i need the variables from each one to add up

like

when a player sets ready

it sets +1 to the variable

therefore its now 1

if another one readys

its now 2

isnt player state like between player 1 and server

[thin stratus]

No

PlayerController is LocalClient and Server

PlayerState is everyone

And one per Player

[zinc zealot]

D:

[thin stratus]

GameState is everyone, but one per game

Read the compendium

It's all explained

It's wasting time repeating it again

I wrote it for a reason

[zinc zealot]

im pretty sure ive read that

[thin stratus]

Then you wouldn't need to ask that

[zinc zealot]

thats why i tried to use game state

[thin stratus]

You can let the GameState go over the PlayerArray

So when you set Ready to true on the PlayerState

you tell the GameState to loop over the PlayerArray

and check if everyone is ready

Or just count how many are ready

whatever yo uwant to do

[zinc zealot]

so i should communicate the ready to player state and have gamestate see if theyre all ready ?

[thin stratus]

That would be the way, yes

[zinc zealot]

this is confusing XD

thx btw 😃

@thin stratus how long have you used unreal ?

[thin stratus]

More than 4 years

[zinc zealot]

O-O damn xD

question how do i cast to player state ?

i think i got a reference but now

its like

theyre not communicating

[humble zealot]

can anyone help, my server isnt showing on "internet" on steam

only lan

[winged badger]

if the server is on the machine you're searching from

nothing you can do about that, steam API limitation

[humble zealot]

ah

i dont know if ive done it right

its showing on steam on lan

[zinc zealot]

Guys

if people join a server

what defines theyre pawn or is there a way to call a random pawn / player controller

[thin stratus]

Every player goes through a "login" phase

Where PreLogin, Login, PostLogin

Login creates a PlayerController for them

If the GameMode you use has a Pawn/Character class as defaults assigned, it will spawn that for the Player.
I think that heppens on InitNewPlayer.

Only PostLogin is exposed to Blueprints

So each player always has a Controller and a PlayerState

But Pawn/Character depends on you either setting the default class in the GameMode or (if you set that to none) spawning a pawn/character and possessing it yourself

[bleak lily]

https://gyazo.com/c861ed6655cb312c089c22529d6925ba

so my character wont show that he is running

any idea why

the boolean in the animation BP is replicated

and the event is called to server

[zinc zealot]

@thin stratus what i mean is if there's a way to call a client

like

if for example

i wanted to spawn an actor on a client

what way would i have to choose the client

is it trough player state ?

but how do i know wich player state to use or ye ???

[unique thunder]

@zinc zealot Depends on what triggers the spawn, if the player themselves can trigger it then you should be able to spawn it locally by not letting the server spawn it.

For example, using a 'Switch has Authority' node, you would only allow the spawn to happen on Remote. This is a guess 👌

[zinc zealot]

ye i think i understand what you mean

basically let the server spawn the char and so i can "name" it

but what can i make it so it doesnt spawn

[unique thunder]

@zinc zealot If you use the 'switch has authority' node right before the spawn happens and only pull out from the Remote pin to spawn it, then it should spawn it on that client that's executing it only.

[unique thunder]

I managed to get my username to show up in-game but everyone has my username and on their clients, everyone has their username, too - any ideas?

This is how I'm setting it on beginplay.

[mellow cipher]

Would it matter what netdriver the server is runing when it comes to clients connecting behind firewalls?

[humble zealot]

For my game to appear on "Internet" do I need to upload the game to steam?

As it's just not showing

I've got a friend to try look but doesn't come up

[mellow cipher]

Whats your appid and product name

[humble zealot]

I'll have to get it in the morning man off to bed worn out

5am lol

[mellow cipher]

If you remember what you typed here I can quickly test it

[open gazelle]

Hey there. I am using steam to invite friends. All seems to work fine and the client joins the map. Problem is the client is not able to steer his pawn. Normal joining via a server list works fine. Any idea where to start looking?

[winged badger]

steam lobby != game session

[open gazelle]

with lobby i mean the first map

[winged badger]

check if the Pawn is possessed

[twin juniper]

hello

can someone tell mr why all the event ovrrlap are casted also in multiplayer?

i mean, why they are replicated on server and client

and only in owning machine

[manic pine]

theyre not replicated

each connected computer runs its own world simulation

the only part thats "multiplayer" is replicated actors and RPCs

[hazy herald]

When I try to use server travel it gets weird error saying that it can not load package. Plz message me

[open gazelle]

does a client usually only hold one controller instance (its own)?

[meager spade]

@open gazelle yes

server has a copy of all controllers, but clients only get there controller and can't access anyone else's controller

[humble zealot]

I'm getting these 2 problems. They are saying they can't open them

Any ideas why

[meager spade]

have you tried right clicking and selecting open include?

sometimes intellisense derps

[humble zealot]

like that?

it just bleeps

[meager spade]

probably wrong location for

[humble zealot]

theyre in source in the same place i downloaded them

[winged badger]

did you add Steamworks or w/e the module is called in your build.cs?

[humble zealot]

@winged badger which build.cs

[winged badger]

there is only one... YouProjectName.build.cs

it has a list of dependencies (modules)

if you are using something in a separate module, you need to add it there

[humble zealot]

I'm not that fond of vs

So my project has the .sln file, I open that , where next

[unique thunder]

Inside character BP: On possessed > cast to game instance > get Name value > set locally inside character BP > repnotify set a textrender above player's head to the Name value retrieved.

---

This works but everyone has my username above their heads on my client and on their clients, everyone has their username. Where did I mess up the replication?

[humble zealot]

@winged badger I'm on my build.cs (.sln file) where is the dependencies

[sharp pagoda]

It's literally called "PublicDependencyModuleNames" and "PrivateDependencyModuleNames"

[humble zealot]

im new to vs so i dont know

thank you

[zinc zealot]

how do i call the integer from a player controller

and then send an output to the owning client ?

[sharp pagoda]

"call the integer" ? The integer is simply the index of the newly added element into the array, it doesn't represent the actual controller directly. @zinc zealot

[mystic field]

What would be the best way to differentiate a dedicated server build from a client build? Understandably, the server code must never be included in public clients, yet I don't see how creating a separate project would also work as all relevant game data needs to be loaded in the memory as well (collision meshes, maps, etc)

[sharp pagoda]

#if UE_SERVER is what I use for determining if the current build is a dedicated server

[mystic field]

That would be considering the project is purely based on C++ though, correct?

[sharp pagoda]

Not purely, but for c++ that is one way. Not sure if GetNetMode() is exposed to bp

[humble zealot]

No matter which way I put the / or \ it still says its not linking, or have i done it completely wrong

[mystic field]

That was also what I was thinking, I'm afraid there's no cleaner way than this. On an other topic, how viable would you say it is to link the UE4 game state with a websocket server? Specifically, what I'm looking at is a dual system between UE4 based movement & combat system and a websocket server for other actions such as item/currency/etc storage using a memory based database

Obvious part would be that the dedicated server would also have an open WS connection, although the authoritative figure should remain present

[unique thunder]

@mystic field Gamesparks is a good solution for storing that kind of player data

[mystic field]

Gamesparks also got my attention, although I am not completely sure what the product fully offers

[unique thunder]

I think it offers ded servers but we're using GameLift for that. Gamesparks has been good so far to let players register accounts that are stored on the database and can be used to authenticate them (good for cross-play), etc. instead of using their default platform login. You can also store player currency, items and pretty much any other variable. You can also modify players' variables through the Gamesparks portal (give them items, for example)

It goes heavy on analytics as well, a lot of it is in real-time. You can track almost anything players do.

[mystic field]

@unique thunder Looks very promising, it does make multiplayer backend seem like a piece of cake although it's not exactly what I'm looking for. Currently I am already able to set up the backend from scratch, what really holds me back though is the dedicated server/client build process, it's very easy to get tangled

(the backend being non-UE4 related infrastructure)

[unique thunder]

With gamelift, I have to build the server first and then package the client version separately (it needs a reference in the project linking it to the correct fleet that handles the whole process) - so it depends on the provider, if you're running your own, etc.

You can build the ded server & the client build simultaneously to be identical through command prompt alone.

[mystic field]

I'm aiming at self hosting so it seems dealing with the dedicated/client discrepancies in unavoidable. Thanks for the info regardless, I learned a bunch of stuff about gamesparks & gamelift

[zinc zealot]

Guys im pretty sure this is simple

im spawning an actor in player controller and its called from an event ran on the server

only the host (server) can see

do i have to... multicast ?

[zinc zealot]

anyway

question

is there something wrong here

i want to give a random player an item for example

shoudlnt i use it that way ?

same as the compendium

For some reason im getting tons of errors and i dont know what is it

for some reason it cant acess the player controller list

but in the compendium dint it say that the gamemode and game state can communicate ?

[unique thunder]

Why is this causing every player to have the same username as me? On their client, everyone has their username.

[brittle sinew]

Having a replicated variable on the GameInstance doesn't really make sense, and I think it might be where some of the confusion is coming from.

The GameInstance is local to each instance of the game running; the server only has one GameInstance, and each client only knows about their own.

[unique thunder]

Ah, so not replicating that username variable should show separate usernames since it'll check local instances?

[brittle sinew]

How are you planning on letting other clients know about your name?

Usually you would do that in the PlayerState.

[unique thunder]

I tried that but it always comes up null when I set and use it from PlayerState

I'm 'setting' the username outside of the multiplayer session, on the login screen.

So when I enter the session, I seem to lose the value (but gameinstance still has it)

Right now I'm just setting a textrender above players' heads on repnotify

[brittle sinew]

Okay, then once you connect you would probably call down to the client, have them get their local name from the game instance, and send that back up to the server.

[unique thunder]

This is a ded server by the way, does that change anything?

[brittle sinew]

Not really.

[unique thunder]

So to clarifyh,

On join (let's say, on possessed for example) > Get username from game instance locally on client > repnotify to set username above head?

[brittle sinew]

No.

You cannot set replicated variables on the client.

You would have to call a server RPC on the PlayerState, sending the name as a parameter, then set that variable on the server side.

[unique thunder]

So I call a server RPC on the playerstate, setting the variable in the playerstate (but getting it from the gameinstance) ?

[brittle sinew]

Yes, but you need to retrieve the name on the client, since only it knows about its game instance.

[unique thunder]

So get username on the client, call a server RPC on the playerstate, set the variable there - then I can access it from the player BP and set it?

[brittle sinew]

Sure, once you're on the server you can set it wherever you want. I just suggested the PlayerState because it's more inclined to represent players than a pawn is. (a pawn is more about what a physical player is currently using.)

There's already APlayerState::PlayerName.

[unique thunder]

Inside the player (character actor), when I want to retrieve the username, how exactly should I be setting it so it shows up on everyone's clients above my head? Currently I'm doing it on repnotify after getting the value, is that enough?

[brittle sinew]

That should work, yeah.

[unique thunder]

What's confusing is, when I run the server RPC inside the playerstate - would the server know by default which client called it and then set it for that client's playerstate alone?

[brittle sinew]

Each player has a PlayerState.

[unique thunder]

So if a client runs a server RPC inside their own playerstate, the server handles that client's playerstate alone

I'm probably getting confused with a listen-server scenario where the server has his own playerstate, sorry.

[brittle sinew]

Yes.

That's how replication works in UE4—it refers to the same object on both ends.

[unique thunder]

I'll give this a shot.

@brittle sinew Like that?

[brittle sinew]

Sure. You just need to call Get Username at some point on the client, whether it's from a local event or a client RPC.

[unique thunder]

At the end of that 'Get Username' chain, right after the playerstate server RPC is called

I follow up with a local event

Getting it from the playerstate > repnotify

If this works, I just need to set up a bool to check if the playerstate already has the username and if yes, to just use it - if not, to set it then use it so it's not resetting it every respawn

[strong abyss]

I have a strange problem concerning hosting a game on Steam with more than 2 players.

The host and first player can always join the game. But any players after that cannot join unless we coordinate and click join at the same time, then all players can join fine.

When I refresh my server list after a first player joins, the server is no longer found, even though my SessionSettings.NumPublicConnections is always > 2.

When 2 or more joining players can see the game on the server list and the first one joins, then (without refreshing) the 2nd player tries to join shortly afterwards, the Adress returned by SessionInterface->GetResolvedConnectString(SessionName, Address) returns an empty string, which results in a failed attempt to join a game.

When I use the Null Online Subsystem over LAN, things are working as expected.

Does anyone have any ideas what I could be doing wrong?

[twin juniper]

can someone tell mr why all the event ovrrlap are casted also in multiplayer? And not on owning machine by default

[unique thunder]

@brittle sinew Not sure which yet (takes like 45 minutes to deploy a build for testing) but something here might be failing to cast. The name above the player's head stays at its default text value 🤔

Oh am I supposed to do 'Get Controller' > 'Get Player State' > 'Cast to Player State' (whoops) 😂

[brittle sinew]

What is this BP?

[unique thunder]

character BP

this is initiated on possessed

[brittle sinew]

Like I said above, you can't set replicated variables on the client.

You need to call to the server to do that.

[unique thunder]

which one are you referring to?

the username in playerstate?

[brittle sinew]

No, in the character.

[unique thunder]

the local / repnotify username variable?

[brittle sinew]

Yeah.

[unique thunder]

Ah, I thought repnotify was by default exec on server for some reason

So call a server RPC to repnotify at that point?

[brittle sinew]

Yeah, but it might just make sense to set it in the PlayerState's set username function since you're already on the server.

[unique thunder]

Yeah I did,

I'm new to networking tbh - I think I read that RepNotify was to tell new joining players that this update occurred

Rather than running it on server once and newcomers not seeing the change

[brittle sinew]

All a RepNotify variable does is to run a function on clients when the value of the variable changes.

There's nothing special about how it replicates—you still need to set it on the server and let it propagate to clients.

[unique thunder]

Ah, so is 'always relevant' how new joiners see changes as they are then

[brittle sinew]

The impact of relevancy more has to do with RPCs than replicated variables.

If something goes non-relevant but then goes relevant again, it will have the new values of any replicated variables (and will fire RepNotifys if applicable), but it will have missed any RPCs called in that timespan.

[gleaming vector]

it's best to set client state with replicated variables

and only use client RPCs with stuff that doesn't actually matter

like, telling the client to play a particle effect

[rose egret]

is there anyway to override movement replication for ACharacter ? my units only have Yaw Rotation and 2D position I just want to save a little bandwidth

[manic pine]

not easily, no, it'd require remaking a lot of functionality

you can mess around with quantization levels and net update rates, but not much more

[bitter oriole]

I would need to have really really bad bandwidth issues to go looking into that

@rose egret Sure you need to optimize that ?

[winged badger]

yeah, it would have to be life or death for me to go messing with the CMC

[rose egret]

@bitter oriole not that much. if it was easy (simply overriding a function) I could test that.

[bitter oriole]

Na, it's not going to be anywhere that simple 😃

Basically swapping out all the types in the class and all the associated handling

[rose egret]

@bitter oriole no I don't need to change the types. FVector and FRotator stay but In serialization I just serialize Yaw and XY. I don't know where and how ACharacter replicates its transform. actors use Actor.ReplicatedMovement

[bitter oriole]

Serialization in UE4 is automatically handled based on the types

So yes you do

It's also textbook premature optimization - until you know for sure that the performance hit is relevant to your game, don't spend time on it that you could spend on making your game happen

[manic pine]

its done in FRepMove struct in a custom serialization function to deal with the quantization settings

shouldnt be too bad if youre building from source anyway

but thats only a tiny part of it, since youd ideally change the actual ServerMove functions as well

to limit client->server traffic

[chrome bay]

Tl;dr - don't bother

CMC packs things up pretty tight anyway

[rose egret]

UE4 handles playing animation itself? I played an animation montage on my AnimInstance but clients are not playing it

[bitter oriole]

You need clients to handle animation themselves based on the replicated state

[mellow cipher]

Anyone having issues with phyiscs in 4.20?

Seems like it isnt server auth anymore

Wait no its just this

https://issues.unrealengine.com/issue/UE-62345

Ironic thing is that this "bug" was the thing I was trying to pay people to make for me

[hot ridge]

Havent really posted yet, but glad this community exist ❤

wanted to ask something Im having a problem with

I have a Server player able to pickup objects and move them around

The problem is that the Client sees the object offset in a different location

any workaround or reason for this?

[static lynx]

For MySQL functions, I imagine the best place to keep those would be in the game mode, instead of the player controller, that way the client doesn't ever see any data if they read memory, correct?

[chrome bay]

@hot ridge the pickups probably aren't replicating their position

Make sure they replicate movement

[hot ridge]

i have replicate movement enabled

[chrome bay]

are they being spawned on the server or pre-placed in level etc?

and are the actors themselves replicated?

[hot ridge]

pre placed

and yes the actors themselves are replicated

[chrome bay]

kk there shouldn't be any issues then

Sounds like a setup issue somewhere

[hot ridge]

i dont know where.... >_<

kinda going crazy with it

I have this for my replicating actors:

[chrome bay]

I have no idea what that's trying to do

It looks however, like you're calling a NetMulticast and changing the transform of something, but only on the server (authority)

If the object your modifying the transform of isn't the root component, it won't be replicated

Movement replication only cares about the root component (aka the actor transform, not individual component transforms)

[manic pine]

your multicast is telling clients to place the Tub where it already is

settransform(gettransform)

[chrome bay]

Also, since that's a multicast, the clients won't do anything

the authority switch bypasses that code on the client side

[manic pine]

ye

its a complete mess, delete it

[hot ridge]

lol ok

[manic pine]

if you use replicate actor and replicate movement then its also not necessary

[chrome bay]

What are you trying to do exactly @hot ridge ?

[hot ridge]

I have the server grab an object, and I need that object's location and rotation to reflect on the client

[chrome bay]

If you have replicated movement, it will do that automatically

[hot ridge]

when the server moves the object the client's should also

[chrome bay]

But the component you move has to be the root component of the actor

[manic pine]

on your object, activate replicated and replicatemovement

[hot ridge]

ok, I had it enabled before and no luck -_- even with root componets set properly

i have it enabled now too

let me run a test after deleting this mess

[chrome bay]

Does Move Notify get called on the Server?

[hot ridge]

hmmm... I need to look at that

[chrome bay]

Yeah I'm very confused haha

[manic pine]

what is your object

[chrome bay]

If you want to just attach the object to the player, just attach it server-side

[hot ridge]

sorry i brought a mess and should epect a mess

my object is a static mesh set to movable

[manic pine]

a static mesh actor?

[hot ridge]

A static mesh component

it is the root though

[manic pine]

the root of what

whats the actor

[hot ridge]

let me take a pic

[chrome bay]

Doesn't look like it's the root

[hot ridge]

ok taht looks like the culprit. How can I change to root? it wont let me

[chrome bay]

IIRC in Blueprint you just drag it to the top of the components list

[hot ridge]

I did and it dosn't allowme

[chrome bay]

Sounds like the root is inherited from somewhere else

[manic pine]

i think you grab supplytub and drop it on grabable yes?

use bp so rarely

[chrome bay]

same

[hot ridge]

let me see

yeah no luck

[chrome bay]

I think it says "make new root"

What is the base class of that actor?

[hot ridge]

the parent class is "Actor"

[chrome bay]

brb opening editor

this is bugging me now

[hot ridge]

and the class is "SupplyTub_Grabbable_BP_C"

sorry I brought a brain musher

im sure there's a simplesolution

[chrome bay]

What is "Grabable"?

Is that a scene component?

[hot ridge]

Yes it is

orno im sorry

[chrome bay]

Ok. drag that onto Supply Tub

[hot ridge]

my bad it isn't

[chrome bay]

Oh kk

[hot ridge]

it's a custom component

[chrome bay]

Is that custom component just an Actor Component?

I swear they used to have a divider between scene and actor components...

[manic pine]

it has to be an actor component

[hot ridge]

they did i dont know what happened to it

[manic pine]

a scenecomponent would create a hierarchy

[chrome bay]

That's what mine looks like in 4.20

The scene components in the middle, the actor components at the bottom

[manic pine]

which means grabable cant be root, it has to be the mesh component

so the problem is elsewhere

[hot ridge]

_<

thanks for the help even if i get nowhere

[chrome bay]

If you want the "grabable" object to just attach to the player pawn, you should be able to just attach it

Attachments are replicated

But ofc, you only do so on the server

[manic pine]

can you select your SupplyTub_Grabbable_BP and show the details window, specifically Replication

[hot ridge]

k one sec

[chrome bay]

That's fine

Try just getting the root component and printing it to screen

btw this doesn't matter unless you rework what you were doing initially anyway haha, as that doesn't work either way

[manic pine]

i dont think you can have a BP class without root

it makes one by default if it isnt there doesnt it

BP Actor class*

[chrome bay]

Yeah I believe so

[bitter oriole]

The actor transform methods just redirect to root, so yes

[jolly siren]

Has anyone figured out how to use the 4.20 steam auth stuff yet?

[chrome bay]

@jolly siren have a look at shootergames config files

[hot ridge]

so does the problem seem to be the root? I dont' have the option to change it

[chrome bay]

they've got some setup items in there

[manic pine]

try to brute force it a bit rolento, set your static mesh to replicate component

[jolly siren]

Thank you James 😃

[chrome bay]

np's

I don't know what it actually does mind

[hot ridge]

I've been brute forcing it for a few days off and on lol

[merry pebble]

lol

[twin juniper]

@jolly siren I think there is a component which does it

[merry pebble]

So could someone help me wiht, or lead me in the right direction of setting up a listen server, and being able to have people join

[chrome bay]

+Components=OnlineSubsystemSteam.SteamAuthComponentModuleInterface```

In WindowsEngine.ini in my project (or defaultengine.ini depending)

[bitter oriole]

So, an Actor without an Owner can't fire RPCs from client to server

Can a server-side Actor without an owner fire client RPCs on another class ?

[manic pine]

on another object?

[bitter oriole]

Yeah. Like, a player controller.

[manic pine]

anyone can call a function, its just a function call after all

but whether it goes through or not depends on the network owner of the object that owns the function

controllers that belong to players are always owned of course, so that'll always be accepted

[bitter oriole]

My understanding was that the owner requirement only applies to server RPC

[manic pine]

no, also client rpc

after all, if an object is without an owner, which client does the server call it on?

[bitter oriole]

Yeah, that makes sense

Basically I'm checking if my pawn server code can call PlayerController::ClientSetViewTarget, sounds like it can

[manic pine]

yeah, its not about which object is calling the RPC, its about which object the RPC is being called on

[bitter oriole]

👍 Thanks again

[manic pine]

for controller on server you prolly just wanna use SetViewTarget though

it'll automagically call ClientSetViewTarget for you

it also does some other stuff to facilitate smooth spectating

[hot ridge]

@manic pine or @chrome bay if I PM you the project (roughly 3 gigs) could you look at it and see if you have the same problem on your end?

it's setup for VR though so i am unsure if it is testable

since I'm running it on 2 seperate computers

its all good if not since I'll just keep brunting it thorugh till I find a solution

[chrome bay]

I'm about to go offline I'm afraid

[hot ridge]

no prob

if anything I'll report updates later

[mild zodiac]

is there any way to have replication condition per connection? for example replicate certain properties only to certain clients

[chrome bay]

Unfortuantely not

though the new Replication Graph system might expose some more control, but it's pretty advanced

[merry pebble]

Okay i need help, my Steam API keeps disabling while packaging the project and idk why!

[bitter oriole]

it's normal

ffs

[unique thunder]

@merry pebble That's a normal warning, I think it should always fail to use the Steam API during the packaging process. You can still use it after

^

[bitter oriole]

I've said it three times now

It's supposed to be disabled

[merry pebble]

Well the steam intergration works in the standalone while in project, but when it's packaged the steam intergration doesn't work

idk

[unique thunder]

What specifically are you trying to do with Steam that fails?

[bitter oriole]

@merry pebble If you packaged in shipping, you need to launch the game from Steam

[merry pebble]

well when you open the project the steam overlay doesnt pop up

Shift + Tab

Doesnt work

[bitter oriole]

The packaging log about the API being disabled is normal however

@merry pebble Is it a shipping build ?

[merry pebble]

indeed

[bitter oriole]

Start the game from Steam, then

[unique thunder]

I'm casting to my game instance to get the player's username and applying it properly, this works but everyone has my username above their heads. How do I make it so that only I have it above my head for everyone and they have their own? I didn't multicast the set text

Wait.. will the 'Event Possessed' trigger if the character is the default pawn in the game mode on level load?

[merry pebble]

Okay so i have the steam working but i cant join my friend and they cant join me

[bitter oriole]

Have you implemented sessions ?

[merry pebble]

Indeed i have

I have followed along with Unreal Engines youtube series of multiplayer

i can give you a copy of the file if you would like to look at it

[bitter oriole]

So using the advanced session plugin etc ?

[merry pebble]

na

I followed along with this series

https://www.youtube.com/playlist?list=PLZlv_N0_O1gYqSlbGQVKsRg6fpxWndZqZ

idk what to do lol

[main sentinel]

Hey guys. I have a custom player movement on my game where the clients sends the input to the server via an RPC (unreliable) on every tick.

The game works fine when only 1-2 players are connected. The problem is that when more players connect to the server (5-10), it starts to get really laggy and I'm believe it's not a connection issue because I get an average of 8kb/s in/out data per player

Am I sending the input the right way to the server?

I believe it's worth noting that this project is entirely in Blueprints. Can it be a performance issue?

[static lynx]

every tick? that's much to often.

too*

[thin stratus]

Well he can easily check if that fills the bandwidth

[main sentinel]

I thought Unreal was able to manage it smartly for me

[static lynx]

^

[thin stratus]

UE4 doesn't do much, they just send the stuff

Also you could check if it still lags if you disconnect your code

or call it less often

There are also ways of using NetQuantized Vectors

even in Blueprints

it's an extra variable type

[main sentinel]

I'll search about that. But how can see if it fills the bandwidth?

And how often should I send the input to the server?

[thin stratus]

UE4 has a Profiler for that

You can record that stuff and then view it

https://docs.unrealengine.com/en-us/Gameplay/Tools/NetworkProfiler

[main sentinel]

Yeah, I know. But i couldn't get much info looking at it

Do you know any good articles about the network profiler?

[thin stratus]

Not out of my head

[main sentinel]

Actually, don't mind that. I know that each player is sending input 120 times per second

And I believe that is very high

How often would you send the input to the server?

[thin stratus]

Hm no idea right now

I know that the CMC calls tries to every tick

But they probably have some sort of stop for not sending it too often

const bool bCanDelayMove = (CharacterMovementCVars::NetEnableMoveCombining != 0) && CanDelaySendingMove(NewMovePtr);
        
        if (bCanDelayMove && ClientData->PendingMove.IsValid() == false)
        {
            // Decide whether to hold off on move
            const float NetMoveDelta = FMath::Clamp(GetClientNetSendDeltaTime(PC, ClientData, NewMovePtr), 1.f/120.f, 1.f/5.f);

            if ((MyWorld->TimeSeconds - ClientData->ClientUpdateTime) * MyWorld->GetWorldSettings()->GetEffectiveTimeDilation() < NetMoveDelta)
            {
                // Delay sending this move.
                ClientData->PendingMove = NewMovePtr;
                return;
            }
        }

Could be that part

But not sure. I'm staying away from the CMC atm

Everything before that seems to be local

And the Actual RPC comes after it

ClientData->ClientUpdateTime is basically MyWorld->TimeSeconds from the last time the rpc was sent

EffectiveTimeDilation isn't that important atm

And NetMoveDelta would be something between 1/120 and 1/5

GetClientNetSendDeltaTime is pretty much depending on the situation

[manic pine]

yeah, CmC checks every move if it can be delayed... moves that automatically delay is stuff like if velocity == zero

[thin stratus]

So I guess if they can delay it they do that between every 1/120 and 1/5 second

[manic pine]

if a move is delayed, the next move on next tick will check if it can combine with the delayed move

and then turn them into a single move

[thin stratus]

Pure magic