multiplayer

[copper portal]

I am making a system where I want the game to choose a random sprite (the same sprite design just different color) and in my gamemode, I loop through the player array from game state and I cast to my character which has a string var called color and I have an array in my gamemode that is an array of strings with color names. I generate a random int, use the random int to get a certain color from array and set the color var in my character to the color grabbed from array. for my character bp, I have a bunch of branches that check what the color is that was chosen but only 1 player gets a random color and the rest dont get a color. I print string the color variable and 1 color shows but the rest prints null. Anyone know what I can do to solve this problem? https://gyazo.com/6ac4628b8af9c9934af57e2a6ece1d6f https://gyazo.com/85a754eb616910ee270552c4bd269eea

[livid barn]

@winged badger I'd doubt it becuase it happens far too consistently at around the same time during testing. Also I'm testing on my own computer here in the editor running with Dedicated server.

Issue seems to happens regardless if im using Tick, a Timer, or OnCharacterMovementUpdated
Im now trying to follow up the common symptom people have whereby they just have a basic "isSprinting" toggle for their game. I notice some resets if i just setup a basic toggle, and each time i toggle there is a reset, so going through UnAnswers seeing different apporaches people have taken to see if any of them have a way to stop it :\

[livid barn]

and now im even more confused following some of these UnrealAnswers

looking at https://answers.unrealengine.com/questions/91038/networked-sprinting-for-players-stamina.html
In the first picture I can see a RPC (?) named "Server Does Sprint"

in that event, it says "Replicated From Client, Executes On Server, Custom Event"
but when I follow that setup, all I get is "Executes on Server, Custom Event"

am I missing something or tripping balls?

maybe the text for this stuff has changed since that comment was posted in the UnrealAnswers? Even so, after following what they've done I still get position jitters when holding down the shift key to actually sprint

tried following another answer earlier on, same thing, thought it was maybe a bad answer?

[ruby flume]

Anyone here familiar with steam in ue4 that can help me know why steam won't work anymore? It was working a few hours ago and I just did a lot of updates on the game and it won't

None of the updates really effected the code for multiplayer

Anyone able to read my blueprint over?

[rose egret]

how do I get number of player in mutiplayer PIE ?

[rose egret]

I mean before initialization. I am spawning things at GameMode::PostLogin

[raven holly]

https://answers.unrealengine.com/questions/815225/linux-dedicated-server-stops-handling-connections.html

Any help would be great 😃

[rose egret]

whats the owner of a PlayerState ? PlayerController?

[raven holly]

yes

[loud umbra]

@livid barn thanks for your answer I will look into this and try a couple of things thank you 😃

[thin stratus]

Length of the array makes more sense than printing each index :P

But in general, this array only holds players that have a playerstate already

Earlier than post login might only be possible via Login

WHich is c++

[low obsidian]

Hello, I am getting a bit confused on how RunOnServer works. I have 2 blueprints. 1 bp gives health to a player, the client side checks the players health, then calls a RunOnServer event and executes more code on the server which works fine. I have a second blueprint that uses an interaction and I have the same setup except now the player needs to interact with the item. The only issue is that when the RunOnServer gets called from the client, nothing gets executed on the server. Could you tell me why it works on one BP and not the other?

[thin stratus]

Please read up on Ownership

RunOnServer requires the Client to own the Actor

Your Item is owned by the Server I assume.

@meager spade

Wups sorry

@low obsidian

No idea why that auto completed you Kaos

[meager spade]

its cool, just ping me 😄

nods back off at the desk

[thin stratus]

:D

[meager spade]

just had a fight with the GAS plugin, but i won, finally got it so the AbilitySystemComponent lives on the PlayerState, and everything seems to work

[severe widget]

Well obviously you needed Kaos to see this - discord can read your subconscious

[low obsidian]

@thin stratus ok thanks. to get around this I assume just use the player controller so when the character presses the interact button, you pass the character controller to the run on server event, then call the interact event, right?

[unique thunder]

Was anyone here ever able to set up local GameLift ?

[thin stratus]

Well, GameLift only supports a few commands if you use it local

You simply need to follow their guide

[rose egret]

is there anyway to send UDP packet by UConnection or force the client RPC to be sent asap as a single packet ?

what happens when we call a ClientRPC when its sent?

[twin juniper]

Folks, anyone know how to replicate this ?

i already done replications, but whats the best method for this case

[unborn nimbus]

Ok, I have a render target that is created on the client and I need it to replicate to all other clients. I can't use DIM's because it says that they're not supported. How else can I accomplish this?

[dark wren]

Hi there, do u know how to replicate axis LookUp. For example on FirstPersonTemplate: Server look up and server and client saw that, but if client look up, server dont sow that. How to FIX it?

[thin stratus]

@low obsidian You would simply call the ServerRPC in your Character already

So whenever your Player interacts, you do a ServerRPC and do the LineTrace etc. there too

You can even have both (server and local client) calling the same stuff

While letting the local client only do FX (sounds, effects etc.)

[unique thunder]

I'm trying to unpossess a pawn and possess a new pawn, this is init in an AnyDamage event which is server-auth

but it doesn't work as intended

sometimes the player who caused the damage ends up going through the respawn instead of the damaged player

what I'm doing:: if health <= 0 unpossess, simulate physics, spawn actor (new pawn), possess, delay, destroy old dead pawn.

(the physics sim is on multicast but everything else is server-side)

[winged badger]

and it involves at least one use of GetPlayerController[0]?

[unique thunder]

@winged badger yeah

[winged badger]

with dedicated server its the first client that logged in

[winged badger]

wait, i thought you are using dedicated servers @unique thunder ?

[unique thunder]

I am

[winged badger]

so IsLocallyControlled executed on server should always be false

[unique thunder]

I actually just added that in, it wasn't there when I ran the test that was problematic

[winged badger]

well, unless you query against an AI controlled Pawn

[unique thunder]

this set-up works when I try it locally and shoot the server while playing as client

server dies,

spawns in the ghost pawn

delay

[winged badger]

what this code does (ignoring IsLocallyControlled)

[unique thunder]

spawns in the real pawn again

takes it over

im fine the whole time

[winged badger]

is UnPossess the first client that logged in (dedicated servers) or listen server host (listen server)

and gives it a new Pawn

[unique thunder]

so this is happening inside the pawn that gets killed, how do I unpossess the pawn for the player currently in it?

and not the first client

[winged badger]

doesn't matter who did the damage or received it

replace the GetPlayerController[0] with GetController

both of them

sorry

[dark wren]

Hi there, do u know how to replicate axis LookUp. For example on FirstPersonTemplate: Server look up and server and client saw that, but if client look up, server dont sow that. How to FIX it?

[winged badger]

you will have to replace the first one, then save it as a reference

before UnPossess, because after UnPossess it will no longer work

[winged badger]

@dark wren Unreliable Server RPC sending the value to the server

GetPlayerController[0] is... lets say handy when you want to grab the controller from a client machine

although there are always other ways to do it

from a listen, and especially dedicated server perspective, those are deathtraps

[dark wren]

@winged badger Unreliable Server RPC? i do that on my pc, i don't know what is that

[winged badger]

i never opened the first person template, but i imagine the LookUp is driving a variable that is driving the animation BP

you need to send that variable driving the anim BP to the server

or input itself, then calculate there

if you do not know what a ServerRPC is, i strongly suggest browsing through the pinned resources on this channel, finding Cedric's Network Compendium and reading through it @dark wren

@unique thunder that should work, use the reference for the Possess later

[dark wren]

But there is nothing in anim blueprint that connected with LookUp axis

[twin juniper]

@dark wren it is creating a custom event, making it run on server, and setting it to unrealiable you want those RPCs so that the server can execute them as opposed to local execution, when you have a normal custom event

[unique thunder]

@winged badger It does seem to be working but when I spawn the player back in as the actual character, he spawns in floating up higher without a body or something

[dark wren]

@twin juniper i try it in character BP

[twin juniper]

well just DM me so they can discuss i will DM u k

[winged badger]

with a class name prototype Ghost that seems almost fitting

CollisionHandlingOverride for Players should never be left at Default

[unique thunder]

I changed it to always spawn

as for the ghost,

that pawn works correctly

it's when I ditch it and spawn back into a regular pawn that the problem occurs

This

[winged badger]

get the PlayerState from the Controller reference, not the Pawns, after you UnPossessed it

[celest sigil]

Has anyone used the Homing Projectile setting with Projectile Movement component in a multiplayer game? I'm kind of stumped because I'm casting to my parent character class and using it's capsule component as the target. But when I play against another player, the projectile comes back towards the character who fired it. Which I suppose makes sense, how well I differentiate for who the attack to home towards if they are the same character?

[twin juniper]

@celest sigil i use homing

in multi

https://blueprintue.com/blueprint/ez6ql5co/

if you look at the bottom of my pastebin link (a homing missile that is fired to other pawns in my game), you basically want to linetrace out to characters. if the character is HIT - you get that reference and set that as the homing target

[celest sigil]

Thank you you wonderful person! I appreciate you.

[twin juniper]

when you actually set the homing, just set the projectile movement -> homing target component to the reference of the target to hit from the linetrace

np

[celest sigil]

10-4. Thank you

[chilly mason]

is anyone using amazon gamelift?

[gleaming vector]

I've been casually researching it

but i never found a good way to do client interaction with gamelift

there seems to be a missing piece in my opinion in getting your client to find a server

perhaps it expects you to write your own matchmaker?

🤷🏽

[chilly mason]

I think it does, yes

hm: https://docs.aws.amazon.com/gamelift/latest/developerguide/match-intro.html

[meager spade]

i am spawning a widget on my AI which shows damage numbers, but i only want it to show on the player who caused the damage

is there a way to do that?

or should i get the player who hit it to spawn it when it applies damage?

[grand kestrel]

Can anyone explain in a preferably short paragraph what replication graph does for large multiplayer games in a way that factors in the actual result of using it?
used for implementing custom server replication logic. That is, determining which actors replicate to which client connections, as well as how RPCs are routed.
So is it an optimization tool? How would you use this in a way that isn't already achieved through relevancy and what not?

[gleaming vector]

the tl;dr of replication graph is

previous replication system would query, for every actor and for every connection, should that actor be replicated?

this is all fine and dandy unless you have a lot of connections and a lot of actors

and then it gets really freaking slow

Replication graph solves that by splitting up the "For All Actors" and "For All Connections" part

specifically, it allows you to make an easy to traverse graph

according to the stream about it, they would put actors in grid buckets

because actors don't actually move all that fast

generally (your game may be different)

you can safely place them in large-ish (250m^2) buckets

and then when you go through "what actors can I see?", you provide the buckets that the connection could reasonably see

[grand kestrel]

Ahh so it's a server peformance thing?

Sorry only just saw you had replied 😃

@gleaming vector

[gleaming vector]

primarily yes

[grand kestrel]

Thanks 😃

[odd kernel]

I'm completely lost guys. I'm trying to implement VoIP System (Voice Chat) into our game but I just can't seem to figure it out.
I'm currently working with UE4.19.2 so I can't use the Ultimate VoiceChat (for Blueprints) that everyone suggests to use for voice chat.
The main issue is that we are using a Dedicated Server and so I can't just set it up easily with a normal UE4 Session. (I've tested the VoIP with normal UE4 Sessions and it works totally fine).
Anyone who has worked with VoIP with Dedicated Server that could help me with it?

[rose egret]

what would happen if server spawns some replicated actors and a the next tick a new player join the map ? will the new client get those actors?

[manic pine]

of course, how else would the player be able to see other players?

the actors just need to pass a relevancy test for that player

[hard veldt]

Hello guys, I have a question, I'm trying replicate an information using widget, but I'm not sure. Someone know how to do this ?

[hardy dome]

Hey bruddas! Is there any way to make the replicated VR controller motion smoother than it is now? It looks like 25 FPS in the 90 FPS environment now.

This setup executes on the client machine through 'has authority' switch:
DeltaTime = 0.7
InterpSpeed = 200

[bitter oriole]

@hardy dome Local simulation on the client that provides inputs, + replay/rollback

Well, unless you're just talking about the replicated clients

[hardy dome]

This setup already executes on the client side

However, didn't heard about replay/rollback

What's that?

[rose egret]

@manic pine but its not receiving new actors. I spawned then at GameMode::PostLogin.

actually they sometimes are spawned well when ping is low :))

[manic pine]

doesnt matter when you spawn them

im thinking youre either destroying the actors before they can replicate, or trying to use them on the client before they've arrived

[rose egret]

@manic pine I just spawn some characters (my units ) when a user login (AGameModeBase::PostLogin). client himself receives the update. but sometimes other clients don't get it.
I am testing it on PIE . it seems UE4 has a little bug on multiplayer PIE :))

[spark fossil]

Hi all. Having some trouble with a Server RPC call. It's marked as reliable but sometimes it isn't being called at all on the server.

Basically, it's a buff icon that removes the buff on right click. It seemed to be working fine until today, but it's almost random as to whether it works or not. It usually does. The call is being made successfully every time from the client side but the host just doesn't seem to be picking it up sometimes. Thought it might be a firewall issue but they're clear at both ends. Any ideas?

[soft relic]

Hey guys, I have a really weird problem with my multiplayer steam setup, while I can connect with a friend of mine who lives close to me, It doesnt seem to work with others

What could cause such a problem?

[steady briar]

im trying to figure out an annoying glitch thats going on and i think its yet another replication issue.

this is the end im testing for my projectile. i only see the remote one, not the authority one. does that mean im seeing the wrong projectile too?

i know its not a great test, but im wondering because in a Run On Server event i disable collision on the projectile, but in very specific circumstances it doesnt disable (at least the version i see) and the arrows hit/stick to eachother and make a line of arrows

[hybrid cypress]

Anyone have a suggestion for the best way to replicate motion of a static mesh on loop following a spline? I’m trying to get a ship to follow a path between two docks that players can ride on, but the movement gets glitchy whenever I jump while standing on the ship. I’ve tried both a static mesh blueprint that’s replicated and a character child blueprint with the character movement component but jumping seems to offset the client while in the air.

[fringe dove]

@odd kernel in FOnlineVoiceImpl::Tick(float DeltaTime) comment out if (SessionInt && SessionInt->GetNumSessions() > 0) (just the if, not the body of it)

if you want to run voice without sessions

[winged badger]

@steady briar what is the "Arrow"?

[odd kernel]

@fringe dove Alright I'll give it a shot

[unique thunder]

I have an empty actor I'm using as a loc reference, does it need to be set to Replicate for me to reference its location in a multiplayer session?

[winged badger]

depends

if its a TargetPointActor and part of the level, no

(or something similar, doesn't have to be TargetPoint)

if you spawned it, or moved it since the Play begun, then yes

[steady briar]

@winged badger a static mesh (sorry for delay)

i think whats happening is im seeing an inaccurate projectile. if i use a listen server so im the server, the projectiles work 100% correctly

im not great with replication obviously, but i think im seeing the non-server spawned projectile or something. i have a run on server event when it hits something it disables collision and sticks to whatever it hits. the projectile i see isnt that projectile i think, because on the clients screen it hits but it didnt actually hit (like a frame apart from server). so it stops moving, doesnt attach, doesnt disable collision. so every projectile after is hitting something it thinks has collision

eventually the real server projectile hits something and relocates it visually to where it hits. i could be horribly wrong but i think thats currently whats going on. where would the problem be?

[fringe dove]

Are SimulatedProxy characters seen roughly at the position they were on server, or are they are predicted forward in time?

the section "Character Movement and Simulated Proxies" in https://docs.unrealengine.com/en-us/Gameplay/Networking/CharacterMovementComponent

seems to just say they are predicted on frames where there hasn't been a server update

but not that they are predicted forward when there is an update

[vapid mortar]

how can i replicate skinned mesh and anim instance?

[bitter oriole]

Don't

Replicate the state of the thing you're animating

[vapid mortar]

@bitter oriole thank you for your help

why my character's movement on client side jagged

like the character is lagging but not

[bitter oriole]

That can have many reasons - performance, bad netplay implementation, etc.

[vapid mortar]

how can i solve that thing?

[bitter oriole]

Well, you need to identify the problem first

Typical stuff I'd do is log the position of the character at every frame, and check that the numbers don't jump around

YOu can also put a video here and have people give you hints

Multiplayer is 100% this all the time - jagged movement, timing issues, etc

[vapid mortar]

i figure out the problem @bitter oriole

fixed it

[bitter oriole]

Cool

[vapid mortar]

i just want to know

for character selection should i use spawn actor or just set default pawn class?

[bitter oriole]

Spawn

[slim holly]

question: what would be the most bandwidth efficient way to identify npc actors for interaction?

I was thinking random integer, but I can't risk duplicates

[manic pine]

object reference?

8 bytes but guaranteed unique

unless you wanna make your own system to distribute some unique integer to them... but then the clients would need to know about it too, so you'd have to replicate it that way first

seems a needless optimization unless you plan on having dozens of interactions a second though

alternatively, have your interaction happen on the server so the client just sends a Interact rpc without arguments

[slim holly]

hmmm 🤔

I guess raw reference would work if it's only 8 bytes

I was thinking a bit of offloading AI to clients, that's why I asked

[manic pine]

hmm sounds potentially nasty

keep in mind AI then won't have access to e.g. replicated actors that fail net relevancy tests

on that client

would allow for some interesting cheats though, where a client controls an army of NPCs

[slim holly]

to be fair, I've already seen in P2P Coop games where host disables AI

and it's dumb

this way, I was kinda hoping to minimize the effect of such asshattery

[manic pine]

meh, dont bother

host still has all the control since its authority over ai's playercontroller and actors

[slim holly]

host has authority over it in the end, but I can work around everything else

like, actually using playercontroller channel to control the "ai units", which would mean disabling AI would disable that player too

[manic pine]

seems to me you'd just double or triple the amount of work youd personally have to do, and really just end up giving clients even more room to cheat

[slim holly]

cheating is going to happen in P2P anyway

but say, out of 12 enemies only 3 are disabled because 1 out of 4 players wants to cheat sounds better than none

and host can cheat as much as he wants but has to play alone

[manic pine]

host can just do enemy->destroyactor on all of them

[slim holly]

that sounds awfully complex procedure for script kiddies

[manic pine]

not any harder to do than iterating through aicontrollers and disabling them

jump into its tick function and do an immediate call to destroy

[bitter oriole]

If you worry about cheating, you need a dedicated server

[manic pine]

so yeah, youre focusing your energy in the wrong place i think

[slim holly]

that would be throwing money at the problem

[wise depot]

Has anyone here done work with UE4 and steam dedicated servers? i'm having trouble getting my server to initialise steam

using 4.18.3, when the server comes around to calling SteamGameServer_Init from line 592 in OnlineSubsystemSteam.cpp bSteamworksGameServerInitialized = SteamGameServer_Init(

it always fails. All of that function is inline and then stuff inside hte steam dll's so i can't debug it beyond that line being called but it never comes back true.

[wise depot]

does anyone know if there is a #define anywhere for if its running as a server?

[twin vault]

WITH_SERVER but its checking if its compiled as server not running as server

[unique thunder]

Anyone build a Linux server for Windows clients before?

[polar bridge]

having problem with dedicated server on steam hoping someone can point me in right direction.

when i create a hosted session through the game, i can find and join it fine.

when i create a dedicated server, i can join it fine via open steam.xxxx but if i try to find the session it finds nothing.

[chilly mason]

I'm writing some team AI logic for my RTS game and using ActorComponents that I place on the game mode. So 2 AI teams = 2 team AI actor components on the game mode. I figured I'd do it like this as the game mode only ever exists on the server. Is this a sound approach wrt replication/cheating?

[rocky badger]

Should I be using a different UFUNCTION for trigger boxes when having MP in mind? I'm currently using the standard OnOverlapBegin one in the docs. I've been having the long standing problem of the trigger volumes detecting all clients and the server on a single overlap and I see that same issue with other example projects.

[polar bridge]

@rocky badger that's acting exactly as i would expect. different ufunction? no. just check to see if it's authority or not

[rocky badger]

@polar bridge Checking for authority would only have the overlap be called on the server right? No matter who overlaps that is

[polar bridge]

yes, really it depends on what you're trying to accomplish

[rocky badger]

well i mean i want whoever overlaps it to call that function

[polar bridge]

what's "that function" doing?

if it's teleporting an actor, it should be on server. if it's triggering a gui component, should be on client

[rocky badger]

It's displaying a simple UI

[polar bridge]

then that's likely fine, if it's not being fired on every client how would they know to display the UI

again, that depends too. you could have player 1 walk in, and show gui on player 2 which wouldn't be intended

in that case you simply check to see if the overlap event was triggered by the local player

[rocky badger]

ahhh since each client is a local player right?

[polar bridge]

each client has a local player, yeah, but it also has networked players so you need to make sure it wasn't triggered by a networked player

you would have them walk into box, trigger overlap, check to see if it's a local player. i believe there's literally a function called IsLocalPlayer on a pawn, if not on the controller

[winged badger]

IsLocallyControlled for Pawn, IsLocalController for the Controller

[polar bridge]

there ya go

[winged badger]

from OverlapEvent, you would also need to Cast the OtherActor node to Pawn

to be able to use it

[rocky badger]

right right

oh my jeez

thank you guys so much

[polar bridge]

what ports you guys opening for steam dedicated servers? this dedicated server seems to be working exactly as i would expect with the exception that it's not hosting the session on the steam master list. i've added the IP to steamworks, configured steam, i've even mostly copied an old project and the stupid thing just doesn't wanna list it up on the steam master server list.

[solar halo]

what do Cannot load default material /Engine/EngineMaterials/WorldGridMaterial.WorldGridMaterial - This happens on dedicated server when I run it.

[winged badger]

@polar bridge iirc there is a steam limitation where if the server is on the same machine you are looking from, it will show only under LAN

and there is nothing you can do about that

[polar bridge]

it's on a different box actually

i can even join it if i go to console and type open steam.xxxx where xxx it the p2p address the dedicated server spits out

but it can't find the damn session

the only difference since i last had this working is a new firewall, and i feel like it's being restrictive, so i was going to setup an azure VM and see if it has same behavior

[vital steeple]

anyone had values (references and integers) not replicate unless you print them in teh same function? im on 4.18

its rare but ive run into it once or twice now

[static lynx]

How do client to client communication in a multiplayer environment?

[fossil spoke]

You must go from Client -> Server -> Client with UE4 out of the box.

If you want Peer to Peer you must write it yourself as far as im aware.

[static lynx]

No thats what I want to do, C -> S -> C.

just can't seem to figure out the right way to do so

[fossil spoke]

Depends on what it is your trying to do but typically if you want other Clients to know information about eachother you utilise the GameState or PlayerState classes

[static lynx]

I want to call functions/events on other clients basically

not something for gamestate or player state to my knowledge

[fossil spoke]

Whats the example

[static lynx]

even just a simple print example. So client 1 presses a key, the server gets a line trace of the actor Client 1 is looking at (which will be client 2), and will then send the event to client 2. Showing a print statement or any other event I would call.

[fossil spoke]

Well you could RPC to the Server, if the other Actor is the Player, call an Client RPC on its PlayerController.

[static lynx]

alright, I'll try that I suppose.

[raven holly]

Really stuck on this issue if anyone has any ideas: https://answers.unrealengine.com/questions/815225/linux-dedicated-server-stops-handling-connections.html

[next falcon]

So what happend ??
i created a new 4.19.2 project, created a replicated actor, created a replicated actor component
started 2 pie (for multiplayer), the replicated actor added the actor component on server and all conections are shut down with error: FailureReceived, Error: 'Outgoing reliable buffer overflow'

i mean its fresh new project with no changes or so

[winged badger]

did you put the replicated component into a variable that is also replicated with RepNotify?

and RepNotify creates the component on client?

can't think of another way to completely disable the network with just an Actor and a Component

[next falcon]

i just did in the actor: BeginPlay->hasAuthority()->addComponent
nothing else

[winged badger]

no reliabke RPCs?

[vocal echo]

Hey, quick question for anyone who can answer it - From what I've seen from searching online, UObjects are not supported for replication, regardless of whether they're part of a replicated actor and flagged for replication? Is this correct or did I misunderstand what I found online?

[winged badger]

you can make them replicate, but requires abit of extra work

[winter zenith]

Aye - if you want replication see if you can make it work as a AActor

[vocal echo]

Thanks for the info. I'm early on in making this game (first networked game), so I'm just going to change the classes to use AInfo instead of UObject

[gleaming vector]

UObjects can replicate

they just replicate inline with an owning actor

[vocal dagger]

are NetMulticast RPCs executed on server and all owning clients or should it fire on all clients who have a version of the actor in question. I ask because I have two clients connected (one of them being a server) and the game mode calls the multicast on both pawns and the callbacks are firing on the server and only on the owning client, so the SimulatedProxy (the replicated pawn from the server) is not firing the callback for it

[marsh gate]

is there a way to show all active custom games running?

players can run the dedicated servers themselves

but is there a way to see which ones are joinable?

lets say, like CS:GO custom games for example, or any Source game

[vale ermine]

Hmm maybe this would help? Shows something about show server list event. https://docs.unrealengine.com/en-us/Resources/Showcases/BlueprintMultiplayer

[marsh gate]

thanks buddy @vale ermine

I believe this works LAN though right?

How would it work like globally

Would there need to be some server hosted in the cloud?

A master server something?

I heard that term being passed around

[vale ermine]

Is there anyone that can send me in the right direction? Here is what I need to build. 😐 custom MMO back-end framework handling all gameplay logic including object movement, and interfacing it with UE through networking and a custom networking layer using either UDP or TCP. Any security tips would be appreciated. I am looking for what language I should write the back-end in. I am making 2.5D mmorpg style game.

Yea right now I am trying to write my back end dedicated server.

[marsh gate]

wait why?

Why not just use UE4 dedicated server

[vale ermine]

It is horrible.

[marsh gate]

How? I thought it just gets the job done

[vale ermine]

I am kinda upset that we are in 2018 and there is no engine that is ready to make mmo rpgs.

[marsh gate]

like World of Warcraft style?

there have been a lot of forum posts about that sort of networking

[vale ermine]

You wil be limited to around 100 players using UE4 as the dedicated server.

[marsh gate]

ah

[vale ermine]

The ai system is a joke to. That has to be done on the back end server and some hacky code on the clients

From my testing over the last week. UE4 can handle about 50 ai move to calls at one time. That is just horrible.

[marsh gate]

I know there are A LOT

of people who want to make a

MMO RPG

using UE4

and hence there are a lot of

discussions

revolving around that

It would be great for yourself and the community if you link up with those people, and make an engine together or something like that

I'm sure many people are frustrated about the UE4 Dedicated Server just like you are

In fact, I've come across many forum posts

With those topics, even though I'm not making a MMO or a RPG

[vale ermine]

Yea and I got the best information the other day from one of those posts.

1. Implementing a completely custom MMO back-end framework handling all gameplay logic including object movement, and interfacing it with UE through networking: The client purely runs in UE, and the server purely runs outside of UE, and they are coordinated through a custom networking layer using either UDP or TCP. This approach is generally best for MMOs looking to support thousands of players per server, where UE's high-precision approach to player movement and collision are overly-expensive compared to tile maps and other simplified techniques.
   NCSoft took approach 1 with Lineage 2 and various other projects, while Sigil Games took approach 2 with Vanguard. For a small project, I'd recommend approach 2, as it's easy to get up and running in a prototype prior to making engine-level improvements needed for scalability.

I think I am going to have to even edit UE4 source code to make that happen 😦

[marsh gate]

I think your best shot is

Getting the community to help out

Open sourcing on GitHub

You will get a good amount of people for sure

OR

you will find someone

who's already done 90%

of the work

etc.

I'm sure there are some

[vale ermine]

I would like to learn that is for sure.

[marsh gate]

https://www.youtube.com/watch?v=zWi17jbgXmw

Well this game is a MMO RPG

in UE4

so it's possible

somehow

[vale ermine]

The approach I posted above is the one that Lineage 2 uses. There was only 2 option given on the post by a epic dev. So those are the only options I see possible and the second option will not fit my game type.

They don't give info on what the back-end was written in. I assume they use C++ to do their networking layer. That is why I hope someone here could help send me in the right directions based on the approach posted above 😄

[livid barn]

@marsh gate Syed, please atleast finish a sentance before pressing Enter 😛

[bitter oriole]

Large community teams don't really work @marsh gate . You're not getting a large team to focus for longer than a year on a project, and even then, you're unlikely to have 10 really skilled people working all year long. Saying this as someone who's led 15-people amateur projects...

You also need to have clear leadership and people who follow it despite not getting paid

This is why the largest community game projects usually either fail outright, or take 10 years to not release anything

@vale ermine As to MMOs, you have technical problems and commercial problems. The tech is hard, getting the players is harder.

[livid barn]

@vale ermine is this a thing you might be after? https://www.youtube.com/watch?v=N_fUcEKrROM

[celest sigil]

Hey guys, this may seem like a silly question.

I'm pretty comfortable with where the build of my game is at, and I of course built it with the server-client traditional model. What my question is about trying to go back to integrate a dedicated server for more reliability. I'm a little confused as to a few pieces of programs out here. Namely GameSparks and Amazon AWS.

Is Gamesparks a dedicated server system, or will I still need to link a dedicated server to it? (I know I'm using the wrong term, never used dedicated servers before)

[livid barn]

@celest sigil you're talking about running servers that people can just connect to?

[celest sigil]

Being able to find and connect to a match.

[livid barn]

ah, so you're running (or will be soon) dedicated servers happily now online, and just need functionality so people can see what servers are active and can connect to them?

[celest sigil]

I don't have any dedicated servers at the moment. I have an account with Amazon AWS to have them at the ready when I need them. I'm just not sure about how exactly some of these services out here work like Gamesparks and Amazon Gamelift.

[livid barn]

ah, yeah not sure. I ...think?.... I saw some plugins that you can enable that will help you with that sort of stuff. Otherwise I'd expect there would be documentation on those services on how to intergrate your game with them.

If you're just doing basic Dedicated server and X players connect to it. You could probably use Steam's features to find servers; but be hosting your offical dedicated servers on Amazon and such
(thats assuming i understand your question correctly)

[bitter oriole]

Why do you want to use Gamelift / Gamesparks ?

[celest sigil]

Because I was under the impression that they offered dedicated servers

[bitter oriole]

The "hardware" or the software ?

I mean, you can use AWS and just run your UE4 dedicated build

[vale ermine]

First, I would try setting up your own dedicated server on a different computer and connect to it from another computer. Maybe even connect to it from another IP that way you can get your testing down. Once you can do this you will know how to create your dedicated server and then you just need to learn how to host it on Amazon.

[celest sigil]

Ah

[bitter oriole]

Gamesparks is more than just hosting, so if you just need hosting, that's probably not the first step to take

[celest sigil]

@bitter oriole so Gamesparks does host? I guess that's the question I was trying to ask.

[bitter oriole]

I don't even know, don't use it

[celest sigil]

Ah

[bitter oriole]

My point is, are you sure you need this additional third-party UE4 plugin

[livid barn]

@celest sigil Im a little confused as to your knowledge level with dedicated servers?
Have you used them much? As in you know that they are essentially just a manager that runs the game essentially and lets other people connect to it.

you can just simply run a dedicated server on your own computer and have people connect to it. Eg, maybe you have a spare old computer lying around, just hook that up to the net, open the port on your router and let people directly connect to that

[celest sigil]

Sorry if they are silly questions. I really haven't ever dealt with dedicated servers and things like that.

[livid barn]

ahhhhhhhhhhhhh

okie, so the basics then:-

with your normal "Listen" server, you the player are running the game world on your computer. Also rendering the graphics and all sorts of things

but say you want to turn your computer off, then everyone thats connected would be kicked off

so what you do you have another computer that essentiially runs your game in "Dedicated server" mode. Which means it handles the game world just like normal, but there is no players in it

so if you have a forrest, then there is no one about to hear a tree fall

and thus when a player connects to the world, then they are just like any players that connected to your Listen server when you normally run a server

starting to make sense?

[celest sigil]

Yes ^_^

[livid barn]

you yourself dont need to be in the world for it to run

so Dedicated server hosting, is essentially just running it on your own computer or a spare computer. You copy your game code across to the Hosting company, and they run it for you

and normally with the service you pay for, you get remote access to that computer to set it up as you like

heck, you could rent some space in a server rack at a datacenter and have one of your spare computers live there and you make it run a dedicated server

@celest sigil what is the speed of your internet connection at home?

[bitter oriole]

Basically there are three concepts in MP : the dedicated server software which is just an UE4 game without a player (or an actual player, which is a "listen" server) ; the server hosting (any computer) ; and the matchmaking / session / "online platform" - Steam, XBox Live, etc. The three are very independent

[celest sigil]

300 MBs

[livid barn]

whats the upstream rate?

[celest sigil]

30 MBs

[livid barn]

yeah, then what i reckon is, get an older computer (maybe even buy a secondhand i7 or something) and run your dedicated server from your own connection for a while

see if people play and it also means you can configure things quickly and copy data over quickly when ya make changes

once ya get into the groove of it, then look at proper hosting providers

[celest sigil]

Thank you @livid barn and @bitter oriole . Appreciate you guys 😃

[livid barn]

good luck 😃

[bitter oriole]

By the way, if you do have a reliable online connection & power - that can be fine for a long while

Not every game needs its own datacenter

[celest sigil]

I suppose my next question then (again I'm no more than an intermediate blueprint user), if I'm using a dedicated server, is there any need for things that run on the client or can everything run on the server?

[bitter oriole]

You need plenty on the client

Basically all the game runs on both, with synchronization

(You also don't need a dedicated server - you can have one client play server too, if it's not a competitive game)

[livid barn]

Im making a multiplayer game myself at the moment, and I often do my testing with "Dedicated Server" enabled. That way i can pick up on issues where things are not being replicated across as expected

[celest sigil]

I'm making a competitive wizard based fighting game. I'm going to be testing it with a few people around the world to see how stable it is with the current set up. I'm just trying to do as much research as possible on dedicated servers in case I need to go that direction.

I really appreciate you guys patience for my noob questions. Lol

[bitter oriole]

So, competitive means dedicated, because cheating

[livid barn]

you'll spend a fair few weeks then just doing replication stuff. Using the Editors "Dedicated" mode and also having 2 clients running on your cown computer will eat up a majority of your work time

then when its ready for First Playable with others, yeah just run a dedicated server on your own computer or a spare and connect to it

you've got a LOT to learn about networking

😄

expect weeks/months until ya ready to show it off.

[celest sigil]

Yeah, that's what I'm afraid of reworking what I have done. I'm proud of where I'm at right now. Can successfully connect and play a full match with people. Been pretty fun designing it up to this point.

[bitter oriole]

That's pretty great, you don't need much more

Online subsystem if you don't already have it

[livid barn]

i reckon he doesnt even need an online subsystem yet. That comes later when he starts gettings serious about releasing

just manually connecting to an IP will do him fine for a fair while

"open xxx.xxx.xxx.xxx:xxxx" in console

or have it executed as a button click

[bitter oriole]

Online sub is pretty cool, though

And it's something you'll want game UI for

[celest sigil]

I'm using Steams Online Subsystem at the moment. I have it so right now when you Host a game it puts you in a Lobby, the Client can than search for a Hosted game, Join the Server's Lobby, and when both players select their class and are ready it'll load you into what map the Server selected.

[livid barn]

yeah, then ya pretty much set when you run a dedicated server, if the dedicated server is talking back to steam

casue whats actually happening is something like "Hey Steam!, I'm a game server thats started up running MySpecialGame, add me to your server lists!"

and when a player "searches for your game what they are actually doing is "Hey STeam, do you have any game server that are running MySpecialGame anywhere?"

and steam is like "Why Yes I Do!, You can connect to it by this IP and Port number"

[celest sigil]

I'm going to imagine Steam is that cordial all the time now haha

[wise depot]

hey guys, is there a way to have a different defaultEngine.ini for dedicated servers than clients? I want clients to have full use of the OnlineSubystemSteam so we have steam p2p relay support however we want our dedicated servers to just use the null system

[vocal echo]

Hey, I'm trying to get multiplayer working for the first time, but I can't seem to get an actor to replicate properly. Anyone able to give me some pointers as to what's going on?

Issue: Spawned actor isn't being replicated to clients
Notes:
- The actor inherits from AInfo
- The actor is being spawned on the server, not clients
- The actor is set to replicate
- The actor is set to always be relevant
- The actor is set to *not* be only relevant to owner
- The actor overloads GetLifetimeReplicatedProps and registers the variables that should update
- A pointer to the actor is stored in the game state after it's spawned
- My initialization code checks the pointer in the game state to see if it's valid and only runs map setup code if the pointer is valid (which it never ends up being)
- Running a loop that simply prints the number of map info actors always shows 0 for the client and 1 for the server

Anyone know what I'm missing? :(

[winged badger]

the variable holding the reference in the GameState needs to replicate as well

[vocal echo]

Yep, that does too

Or at least, I'm calling DOREPLIFETIME for it

[winged badger]

other possibilities include missing Super::GetLifetimeReplicatedProps()

[vocal echo]

Nope, got that for both the game state and map info actor

[winged badger]

which becomes particularly... funny if its missing in GameState override

[vocal echo]

My game state's .cpp file:

void AVPGameState::GetLifetimeReplicatedProps(
    TArray<FLifetimeProperty>& OutLifetimeProps) const
{
    Super::GetLifetimeReplicatedProps(OutLifetimeProps);

    DOREPLIFETIME(AVPGameState, Map);        // This is the pointer that should be replicating
    DOREPLIFETIME(AVPGameState, Materials);
}

Map info's cpp file:

void AMapData::GetLifetimeReplicatedProps(
    TArray<FLifetimeProperty>& OutLifetimeProps) const
{
    Super::GetLifetimeReplicatedProps(OutLifetimeProps);

    DOREPLIFETIME(AMapData, TerrainData);
    DOREPLIFETIME(AMapData, MapSize);
}

[winged badger]

ok, when you change the world in the outliner to the client

is the actor on the list?

[polar bridge]

how can i go about changing my session name so it's not something like this

it's a dedicated server

[winged badger]

i imagine it is, since it prints something

[vocal echo]

@winged badger Does this show you what you need to know? Screenshot is of a listen server + separate client
https://imgur.com/Z6m8EEQ

The Map data actor is generated when the world is loaded; it's not one that's placed in the level in the editor. That said, I assume it should still show up in the world outliner if it was being replicated to client 1, right?

The map data actor does show up in the world outliner when I run the game as 1 client, no dedicated server

[winged badger]

there is an Unknown deleted actor there

[vocal echo]

Any way for me to figure out what those are?

[winged badger]

print the name in EndPlay

[manic pine]

can you put some printing thing inside BeginPlay of your actor and see how many times its printed

[vocal echo]

One thing I'm noticing as well, switching between the actors listed for the server and those listed on the client - I'm not seeing the game state actor listed on the client

@manic pine Yeah, one sec

[winged badger]

yeah, that is... suspicious

maybe didn't call the Super on a constructor?

[manic pine]

constructor should autocall parent

are you by chance spawning this thing using deferred?

[vocal echo]

Game State cpp:

// No constructor or begin play call

void AVPGameState::PostInitializeComponents()
{
    Super::PostInitializeComponents();
    InitializationSystem = NewObject<UInitializationSystem>();
    InitializationSystem->SetWorld(GetWorld());
}

Map data:

// No begin play call

AMapData::AMapData()
{
    // In-game terrain is static, and therefore does not need to tick
    PrimaryActorTick.bCanEverTick = false;
    bAlwaysRelevant = true;
    bOnlyRelevantToOwner = false;
    SetReplicates(true);
}

@manic pine Nope

Uh

[manic pine]

beginplay never called?

[vocal echo]

Since AInfo is derived from AActor and AActor defines virtual void EndPlay(), any reason that I can't override EndPlay() in the MapData actor? EndPlay() isn't marked as final in AInfo, is it?

Oh, hurr durr

[winged badger]

it has EndPlayReason enum

[vocal echo]

I forgot the argument passed to it

Thanks

Hm

Doesn't look like begin play is being called on the map data actor...? The message that I have to be printed to screen doesn't seem to be printed regardless of whether it's the server or the client

This is the code where I spawn the map data actor:

void AVPGameState::InitializeMap(const FIntPoint & MapSize,
    ATerrainMaterialData* Materials, UTerrainGenerator * TerrainGenerator)
{
    PRINT_STRING_NET_BASIC("Spawning map...");

    FActorSpawnParameters SpawnInfo;
    SpawnInfo.Owner = this;
    SpawnInfo.SpawnCollisionHandlingOverride =
        ESpawnActorCollisionHandlingMethod::AlwaysSpawn;
    Map = GetWorld()->SpawnActor<AMapData>(
        AMapData::StaticClass(),
        FVector{ 0.0f, 0.0f, 0.0f },        // Position to spawn the actor at
        FRotator{ 0.0f, 0.0f, 0.0f },        // Rotation to apply to the actor
        SpawnInfo
    );
    Map->Initialize(MapSize, TerrainGenerator);
    this->Materials = Materials;
}

[winged badger]

what does AVPGameState directly inherit from?

[vocal echo]

AGameStateBase

[manic pine]

is it possible that youve not started the match yet

[winged badger]

if he didn't paste the code, i'd be sure he's missing Super::GetLifetimeReplicatedProps in GameState

[vocal echo]

My game mode inherits from AGameModeBase, which doesn't have the match starting stuff I think?

[manic pine]

beginplay wont be called by World until gamemode starts match

hmm

cant remember if its in base or other

[winged badger]

Easy enough to check, do you have any MatchState lines in the Output log?

[vocal echo]

I just tested it, the HasMatchStarted node in blueprint returns false

[manic pine]

i know it can be messed with by ticking something like 'start players as spectators'

delayed start is another

[vocal echo]

Well, I definitely can't use the StartMatch blueprint node since my game mode doesn't inherit from AGameMode

Oh here we go

It's called the BeginPlay node

Lemme see if this works

Huh

Uh

Well

I got a bunch of "Spawned map" messages spammed and the editor froze for like 10 seconds

[manic pine]

thats a good sign

something magical is always happening when editor freezes

[vocal echo]

lmao, right?

[winged badger]

usually comes with a big block of red in the OutputLog

[manic pine]

ye

[vocal echo]

I'm guessing that calling BeginPlay calls begin play for all actors? Regardless of whether it's been called before?

[manic pine]

yes, but it shouldnt have been called before

world will only call beginplay on an actor if match has begun play

[vocal echo]

Yeah, but I was putting in at the end of my game mode's initialization function, which is called by the level blueprint begin play

So if it calls begin play on everything that's spawned, I would assume it triggers the level blueprint begin play, which would cause a loop

[manic pine]

ah, yeah beginplay is prolly one of those things you never wanna call manually

[vocal echo]

Oh, shit... I wonder if that was calling the BeginPlay function of the game mode, not actually triggering the "Match Start" functionality of AGameMode

Though I don't have anything hooked up to my game mode's begin play, since it's handled in a separate initialization function

[winged badger]

note that BP BeginPlay != BeginPlay in c++

[manic pine]

yeah, i dont think the actor::beginplay thing is bp exposed, is it?

[winged badger]

BP version is renamed BlueprintImplementableEvent called ReceiveBeginPlay

[vocal echo]

There's an event "BeginPlay" that I can override

https://imgur.com/zFeG9dh
In my game mode's event graph

[winged badger]

yeah, that is fine

[vocal echo]

Also, the BeginPlay node that I tried doesn't show up anymore for some reason

[winged badger]

whatever you connect to it will execute just after Super::BeginPlay() in c++

[manic pine]

StartPlay should be gamemodebase's start match

and should be bp callable

[vocal echo]

Yep, I see that node

Lemme give it a whirl

Hmm

It's still causing the message I put in the Map data's begin play function to be called a shitton of times

Er

[winged badger]

i have a feeling we should be looking for a simpler explanation

[manic pine]

well, for one you should find out why its not auto-beginning play on gamemode

like it should by default

[vocal echo]

I take that back, the message that's displayed a ton of times is from the InitializeMap function, which spawns the map. That's called from the Initialize function in the game mode, which is called from begin play in the level blueprint

I'm gonna try calling StartPlay before my game mode's Initialization function

Okay, well, that confirms the issue

Editor reports an infinite loop

Apparently calling Start Play re-calls the begin play level blueprint event

[manic pine]

thats a smart editor

[vocal echo]

Adding a do-once node there makes it work again, but still only on the server

[winged badger]

why is it in level BP?

the call to GameMode::Initialize()

[vocal echo]

Originally, I was having issues with the initialization order of some stuff

[winged badger]

and made it worse? 😄

[vocal echo]

Ie the PlayerController::BeginPlay() was being called before the GameMode::BeginPlay()

I remember moving a bunch of things around to try to get it to work correctly, which is why I created a separate initialization class to handle all that

Just had the call to initialize in the level blueprint from that time

Just moved it to be called by the GameMode's BeginPlay event; no change - works on the server, not on the client

[manic pine]

hmm from what i can tell, uworld will do gamemode->startplay on its own BeginPlay

[vocal echo]

Also, can confirm - begin play for the AMapData actor is being called

Although I'm only seeing a call to AMapData::BeginPlay on the server... shouldn't that be called on the client as well if it's being replicated?

[winged badger]

it should

print something from GameState's BeginPlay

[manic pine]

this is looking more and more suspicious

you may have broken ue

[winged badger]

since that missing in outliner is more then a little weird

agreed

[vocal echo]

Begin play is called on the game state on both the client and the server

[manic pine]

finally some sanity

[winged badger]

EndPlay?

[vocal echo]

Only being called when I exit out of the game in the editor, for both the client and the server

It's not being called early, thank god

[manic pine]

for these latest tests, have you been manually calling StartPlay?

[vocal echo]

No

https://imgur.com/zYgXhXK

The "Spawning Map" message is from GameState::InitializeMap

The client's "Map not ready" message is from a functor in the initialization system (separate instance per client), which checks if the pointer to the map actor in the game state is set

The map data actor count message is from an event in the player controller that checks the number of AMapData actors in the world

[manic pine]

on a regular interval?

[winged badger]

just a theory

if the NetUpdates are driven by Tick

and you did disable it for the MapData

[vocal echo]

Map Not Ready -> Looped via timer manager, every 0.1 seconds
Map Data actor count -> Looped via timer manager, every 1 second

Tried that already

It's currently disabled, but I tried enabling that too

[manic pine]

they shouldn't be... thats why you have the NetDormancy thing... its essentially network tick for actors

[vocal echo]

Though, lemme try it again in case any of these changes fixed it

[winged badger]

yeah, stepped in enough Epic's landmines not to take stuff for granted 😄

[manic pine]

true that

are you inheriting this mapdata actor in BP too?

[vocal echo]

No, that's C++ only

I've got it marked as Blueprintable in case I ever needed to do that, but I'm not currently inheriting from it

PrimaryActorTick.bCanEverTick = true;
SetActorTickEnabled(true);
PrimaryActorTick.SetTickFunctionEnable(true);
PrimaryActorTick.bStartWithTickEnabled = true;

Can confirm, is definitely ticking. Can confirm, is definitely not fixed :(

[manic pine]

do you have a tick function for it

could you print value of replicate there

[vocal echo]

No tick function normally, but I'll add it

UE4Editor

[winged badger]

void AActor::SetReplicates(bool bInReplicates)
{ 
    if (Role == ROLE_Authority)
    {
        if (bReplicates == false && bInReplicates == true)
        {
            if (UWorld* MyWorld = GetWorld())        // GetWorld will return NULL on CDO, FYI
            {
                MyWorld->AddNetworkActor(this);
            }
        }

        RemoteRole = (bInReplicates ? ROLE_SimulatedProxy : ROLE_None);
        bReplicates = bInReplicates;
    }
    else
    {
        UE_LOG(LogActor, Warning, TEXT("SetReplicates called on actor '%s' that is not valid for having its role modified."), *GetName());
    }
}

[vocal echo]

Whoops

May or may not have hit a macro on my mouse

[winged badger]

this might be called a tad early

[vocal echo]

You think I should call that in the BeginPlay function for the Map Data?

[manic pine]

bReplicates = true

is what you should set

in constructor

[vocal echo]

I tried that too

Someone said that SetReplicates does more than that, so I switched over to using that

Lemme try putting bReplicates = true in the constructor and SetReplicates in the begin play, just in case

[winged badger]

hmmm, also

if you are calling that Initialize

from either Level Blueprint's or GameState's BeginPlay

it will run on both client and server

unless you filtered it by Authority

[vocal echo]

Level Blueprint doesn't have anything anymore, and when it did, I filtered it by authority

The initialization code is definitely only run on the server, which is how it should be (I think)

AMapData::Tick is only being called on the server

And that's with bReplicates = true in the constructor and SetReplicates(true) in the Begin Play for the Map Data

[manic pine]

dont use setreplicates, its for changing it at runtime

bReplicates is more than enough

hmm this is quite the mystery

[vocal echo]

No change with removing the SetReplicates call

Not too surprising there though

[manic pine]

well no, it wont do any harm either

just unnecessary

[vocal echo]

But I can dream :(

[winged badger]

NetRelevancy failuire?

where is your client's Pawn?

[manic pine]

yeah but didnt he use always relevant

[vocal echo]

I have the map data set to always relevant

[winged badger]

ofc he did

Dormancy?

[manic pine]

hmm

should still do initial replication shouldnt it?

[winged badger]

can't say i ever got to using it, so i don't know

[manic pine]

not sure either

[vocal echo]

I'm not currently making any calls that would affect that as far as I know; should I be?

[winged badger]

altho i do not see any changes in AInfo to the NetDormancy

[manic pine]

just a low update frequency rate

[winged badger]

just a test here... AInfo gives you a hidden BillboardComponent, and some presets you changed anyways

change the base to AActor?

[vocal echo]

Aight, one sec

[manic pine]

yeah, it mostly hides some info with some macros in the header

like location etc

[vocal echo]

Still doesn't work

[manic pine]

insanity

[winged badger]

oh a theory?

did you by any chance recompile the code while the editor was on?

[manic pine]

afaik, the single requirement for having a replicated actor is bReplicates = true

[winged badger]

agreed there

[vocal echo]

https://imgur.com/a/MwyGSc9

@winged badger I've tried with and without the editor open

[winged badger]

hot reload might cause this tho

[vocal echo]

Two images in that album btw

[manic pine]

could, but this class isnt even bp class

which is what HR usually messes up

[winged badger]

close editor, delete intermediate folder, regenerate project files, recompile and start editor again

because i am out of ideas

[vocal echo]

Aight

[winged badger]

btw, raap, i see the GetPlayerController[0] used on dedicated server daily now

[manic pine]

hahaha

i would ban that entire function so far away

how could they not have foreseen the abuse it would suffer

[winged badger]

i used it once, in a local splitscreen

no network, so it did not break anything

[manic pine]

yeah, that does make it more predictable

i mean, its not like its a huge problem if you actually know what youre doing

but the people using it usually dont

[vocal echo]

No change :(

[manic pine]

how big is this class's cpp file?

[winged badger]

yeah, most of the statics get badly abused

godclass GameModes and GameStates

[vocal echo]

I can send the entire project over if you'd like - I only have terrain generation and rendering done so far

[manic pine]

yeah, everyone seem to love these bp static libs for some reason

[vocal echo]

Only things that would increase the file size are going to be the images for the terrain materials

(temp images off of Google images :P)

[manic pine]

sure, id love to take a look, this problem has me quite interested now

its a grand mystery

[vocal echo]

What folders can I ignore from the project folder? Intermediate, .git, .vs, etc?

[winged badger]

content, config, source, plugins and the .uproject are requred

[manic pine]

and maybe Saved

[winged badger]

(if you have plugins folder at all)

[manic pine]

?

if youve any important settings

otherwise ignore

[vocal echo]

No plugins folder, but I'll add the ThirdParty folder where I have libnoise's code

[manic pine]

whats that?

[vocal echo]

It's what I'm using for the terrain generator

http://libnoise.sourceforge.net/

[manic pine]

ah noise generator

[vocal echo]

Right now, I only have a blueprint wrapper for the Perlin module, but I'm planning on adding more once I get multiplayer working

[manic pine]

yes, having actors replicate would be a grand first step

[vocal echo]

~15 min for it to upload to Google Drive

[winged badger]

try just spawning a Pawn or Character in GameMode

set it to replicate

and see what happens on client

also, paste me your logs, client and server's

its in Saved/Logs folder

should be last 2 by date

[vocal echo]

Added a spawn actor node for the default pawn class in the game mode's begin play function

I can see DefaultPawn and DefaultPawn1 on the server (first one should be the one autogenerated for the player controller)

On the client, I don't see either

[manic pine]

is default pawn class even set to replicate by default?

[winged badger]

@manic pine funny thing

client doesn't have a PC

in the world outliner

[vocal echo]

Uh

[manic pine]

huh

[vocal echo]

That shouldn't be possible

[manic pine]

there is

https://imgur.com/a/MwyGSc9

lower image

(which discord doesnt show)

BP_SurvivalPlayerController

otherwise this would be really freaky

[winged badger]

that is server's outliner

this was client's

[manic pine]

lower image

[vocal echo]

https://imgur.com/8zZPl3o

Which logs do you want, @winged badger ?

[winged badger]

last two after it fails

and you stop play

question: did you Multicast anything from either PlayerController or GameMode?

that part looks more then a little odd

[manic pine]

it does, but there was this one too

https://i.imgur.com/Iuy88bs.png

[vocal echo]

I added a test function at one point that was multicast on the player controller and called from the game mode, but I've since removed that

I closed the editor and deleted all the logs, then opened the editor and ran the game as Listen Server + Client

This was the log file it generated

[manic pine]

[2018.08.09-19.05.10:706][563]LogNetTraffic: Error: UChannel::ReceivedRawBunch: Bunch.IsError() after ReceivedNextBunch 1
[2018.08.09-19.05.10:706][563]LogNetPartialBunch: Error: Final partial bunch too large

[vocal echo]

Yeah, I saw that too

I assumed it was due to the array containing the map data, but I tried reducing that and it still didn't work

[manic pine]

are you doing some kind of huge TArray of items?

[vocal echo]

Yeah

[manic pine]

remove replication from it

and try

[winged badger]

[2018.08.09-19.05.10:671][559]LogNetTraffic: Error: UChannel::ReceivedRawBunch: Bunch.IsError() after ReceivedNextBunch 1
[2018.08.09-19.05.10:671][559]LogNetPartialBunch: Error: Final partial bunch too large

[manic pine]

that error is set to throw if partial bunch is > 64kb

[vocal echo]

Still didn't work :(

[winged badger]

there is an entire spam of those

[manic pine]

did it still throw the error?

[vocal echo]

The tile data stored by the map is an enum (tile type) and an int or float for height

Lemme check

Yeah, I'm still seeing that error in the log

[manic pine]

in your server outlier you had a bunch of landscape things

how many

[vocal echo]

// Array containing the terrain data for the map
// This array is optimized for iteration in the Y direction
UPROPERTY(BlueprintReadWrite, Category = "Terrain")
TArray<FMapTile> TerrainData;
// Map Dimensions
UPROPERTY(BlueprintReadWrite, Replicated, Category = "Terrain")
FIntPoint MapSize;

The TerrainMesh actors are spawned clientside and are not replicated

[manic pine]

remove replicated from MapSize too

oh nvm

just an intpoint

[vocal echo]

Oh, I wonder

Uno momento

Damn

[manic pine]

didnt remove from replicatedprops?

[vocal echo]

No, I did

I set the ATerrainMesh class to not replicate in case AActor defaults to replicated (Didn't think that was the case, but I was hoping it'd fix it anyways)

Hm, interesting

I'm not seeing any more of those errors in the last bit of the log

[winged badger]

and the MapData actor on client?

[manic pine]

there's plenty

unless you reuploaded the old log

[vocal echo]

@winged badger Not being replicated

It includes data from before; I was looking at the part at the end

~line 768, there's logs from a recompile

[manic pine]

ah, yes

[vocal echo]

Restarted the editor, still doesn't work

[manic pine]

alright so no more large bunches errors but still no actor replication

[vocal echo]

Log from testing it after restarting the editor

And yeah, the client still doesn't see the AMapData pointer in the game state get set

OH

SHIT

WAIT

IT AT LEAST SEES THE MAP DATA ACTOR GET SPAWNED

[manic pine]

!!!

[vocal echo]

Not 100% sure why the game state pointer doesn't get set, but that's at least an improvement!!!!!

[manic pine]

finally, problem solved

yeah, thats a different problem

[winged badger]

how large was that array?

[vocal echo]

What options do I have for sending a large array of data?

[winged badger]

compress it, split it

[vocal echo]

Well, I originally tested it as a 16x16 array of hexes, but then I pushed it out to 128x128 to see about performance (all before adding replication)

Soooooo yeah

That was definitely way too big

[manic pine]

hmm, might the netdeltaserializer handle it better?

[vocal echo]

Right now, I don't plan on having the terrain change at runtime

I just want to generate a level, then keep it static for the rest of the game

So what I might just do instead is have each client generate the terrain themselves

Then all I'd have to do is provide the map seed

[winged badger]

that works

[manic pine]

definitely, though if you allow map manipulation you'll eventually run into the same problem again

[vocal echo]

Yeah, but I can just send changes from the server to the clients

[manic pine]

yes, in which case youll run into the same problem again ^___^

[winged badger]

only if you split it

into chunks

or have each tile as a replicated actor

[vocal echo]

Not if it's just saying something like "Tile at (x, y) -> New tile type, new height"

[manic pine]

lets say you join server and mess up everything for hours, then i join and have to receive all your changes

[winged badger]

the RPCs don't get stored

[vocal echo]

Fortunately, I'm planning on making this a match based thing rather than a persistent, long term thing

But, even in that case, wouldn't I be able to basically save changes server side, then, when a client connects, iterate through the array of changes and send each one via RPC? Not sure what performance would be like if there's a ton of changes, but that would work, wouldn't it?

Don't really have time to look into it right now (have to get ready for work), but the alternative would be to create a separate TCP connection from the Server to the Client so I can transfer large amounts of data
https://wiki.unrealengine.com/TCP_Socket_Listener,_Receive_Binary_Data_From_an_IP/Port_Into_UE4,_(Full_Code_Sample)

Since it would be for the map data, TCP would be fine (as opposed to UDP)

Anyways, I'll be back in about half an hour for a brief bit before leaving for work. Thanks a ton though guys, I don't know how long it would've taken me to find the issue without you two

[winged badger]

as long as you can punch through NAT...

[vocal echo]

IIRC I learned how to do NAT punchthrough when I was doing some C++ networking code outside of UE4, but I'll have to look into that again since I don't remember exactly what I did

But yeah, that could be problematic

[winged badger]

yeah, nobody can dig himself a hole quite like a programmer with some years under his belt taking his first step into Epic's minefield 😄

[vocal echo]

Oh yeah, for sure

This is basically my first time using UE4 outside of a small, blueprint-only project

I've been coding in C++ for ~9 years, so I at least know the language well... just not the UE4 framework

Anyways, back in a bit

[fierce haven]

anyone have any experience using Steamworks AND Amazon Gamelift?

[twin juniper]

What is this? https://i.imgur.com/WwcWTOc.png

[fierce haven]

Found this huge free "Unreal Engine 4 Network Compendium" that I thought I would share for those who haven't already stumbled upon it. Looks very well done.
http://cedric-neukirchen.net/Downloads/Compendium/UE4_Network_Compendium_by_Cedric_eXi_Neukirchen.pdf

[winter zenith]

@fierce haven everyone should read that twice over at least if they want to get a good foundation on networking in UE4, for sure 😃

[gleaming vector]

that was made by one of the mods on this server and pinned to this channel 😃

[soft relic]

why does casting from game mode to pc and get its player settings doesnt work when the pc actually loads it fine from the save file

[fossil spoke]

GameMode ONLY exists on the Server, your RPCs and Replicated variables are probably not doing what you may think they are doing.

[soft relic]

So how do I fix this? I do know it only exists on the server but thats why I did the update everyone to get the info and then fill the player list

[fossil spoke]

If you want your Clients to interact with the GameMode on the Server you need to use an intermediary such as the GameState or PlayerState

[soft relic]

Its not the pc interacting with game mode, but the game mode getting a var from pc

isnt it different or

am I wrong?

[fossil spoke]

Im assuming your Clients are loading the Settings from a File?

[soft relic]

save slot

but i tried printing it from pc

and its shows up fine

but not from the game mode when getting the vat

[fossil spoke]

Ok, so the Server has no idea that your Clients have done that, unless you make your Clients tell the Server

Replication only goes one way. It only goes from Server to Client

Not the other way around.

[soft relic]

So when the pc gets the var from the save slot

server has no idea it actually loaded it?

[fossil spoke]

When your Clients load their Settings you need to RPC to the Server to let the Server know that the Client has loaded those Settings.

Yes correct

It has no idea

[soft relic]

Thank you very much

[fossil spoke]

Remember, replication is from the Server to the Client.

NOT Client to Server

[soft relic]

Thanks, I actually did know that but totally forgot that thats the way it works

Now I can fix it 😃

[fossil spoke]

👍

Good luck

[soft relic]

Fixed it, you were right. What I had to do is after loading I had to call a function on pc that was running on server and update the var 😃

[fossil spoke]

👍

[unique thunder]

This is on beginplay, for some reason this AnimBP reference is null in a multiplayer session

Any ideas?

[polar bridge]

trying to handle restarting a match. when it does, it would seem that begin play on my HUD is being called again, and it's duplicating all of my widgets. what's the proper way to handle this?

should i just remove everything in end play? seems...odd

you would think it would all be done automatically, seems weird to me. using a dedicated server

[bitter oriole]

Just don't recreate widgets if they exist

[thin stratus]

@fierce haven That's mine and thanks for sharing hehe (:

[worn nymph]

@polar bridge use the is valid node before you create widgets. if its already valid it means its already been created so you would just add to viewport.

if its not valid create the widget and add it to viewport.

remove from parent doesnt destroy created widgets so if you then call create widget again when there is already a widget it will duplicate

[hybrid cypress]

Does anyone know of any info or tutorial that could explain how to, on a dedicated server, replicate the movement of a static mesh actor with collision smoothly that would allow clients to stand on and ride it as it moves?

[proper olive]

+1 to that

[manic pine]

thats not really a trivial problem

[hybrid cypress]

Hah hey man! Fey lands is looking awesome. 😃

Ah damn, was afraid of that

[manic pine]

it would be made easier if both client and server knows exactly where the mesh actor will be at any given time

[proper olive]

I'm curious if anyone can help explain... I'm not looking for a "fix" per se, but... when clients log in to a game that already has a save file made, even if it's just a few characters with their default attributes, it takes like... a minute before the character gets a controller. BUT ..... if I do a multicast (reliable if that makes a diff in this situation) from the server, it'll kick-start the process and my character name menu pops up. Of course, if I fill in the name and log in, I get my character, but everybody's weapons are unattached and horses are unmounted, etc, which makes sense.... just curious if there's a way I can kick start the menu and then have the delay take place with some sort of notification, instead of just hanging there at 0,0,0 world location, just waiting for the server

and thanks @hybrid cypress 😄 as you probably know I have those fallen trees you can stand on, but when clients do it they warp in and out of space and time 😄

[hybrid cypress]

Haha yeah I’m having the same thing with ship travel, lots of wacky stuff, at least it’s entertaining trying to figure it out! Raap, my need for it would involve absolute mesh positions predictable that I could feed to both client and server, preferably moving the mesh along a spline with a timeline on loop (which I have working on a single client), so what I’m having trouble with is synchronizing the movement to those absolute world positions on multiple clients driven by the server.

[proper olive]

hmmmm my characters seem to stay on boats no problem

it's a little shakey on client side, worse with small boats, but they move around and behave as if standing on solid ground

I didn't do anything special, just plop the boat in the ocean and move it around using set actor location, has character can step up on, of course

[manic pine]

if you synchronize it to gamestate's server time, it should work alright i'd guess

the movement will just be ping/2 off, which isnt too bad for slow moving objects

[proper olive]

how is that done?

[manic pine]

if you wanna go even better, you could synchronize it to server time + your ping and get it perfect(under stable ping conditions)

well, its position on the spline would be determined by only a time factor

e.g. time 0-10 seconds ship is docked at portA, 10-100 its traversing the spline, 100-110 its docket at portB, 110-200 its traversing the spline back to portA

[proper olive]

I don't know what you mean by "synchronize it to gamestate's server time"?

I mean maybe I'm overanalyzing it, if all you're saying is set the position on the game state and send that to players then OK yea I get that..... maybe that would work with my fallen trees, if I do a quick "get location" on game state, then set location to all players once the tree has settled down?

[manic pine]

no, not exactly... we're still talking spline-based movement here right?

i.e. a route that both server and client knows beforehand

i was referring to the boat on my previous answer, for the trees its more tricky, especially if youre simulating physics

[proper olive]

yeah I am

and my boats I wasn't planning on using a spline, idk about @hybrid cypress

[manic pine]

your trees are falling based on a pre-made 'route'?

[proper olive]

oh sorry "yeah I am using physics"

[manic pine]

ah no, you meant youre using physics

yah

[proper olive]

😉

[manic pine]

simming physics over network is terrible since server and clients run with different deltatime

a colliding object like a player can also be in a slightly different location on impact

[proper olive]

well until the tree has "settled," it has no collision with players

once it "settles" (timeline and/or if it settles before timeline finishes) I turn off physics and turn on collision

so it's static at that point

just need to update its location to synchronize

[manic pine]

right, and you get teleporting if you just do a naive setlocation call from server to clients

[fierce haven]

@thin stratus awesome man. Loving the pdf! Very useful, I’m about a quarter of the way through ☺️

[hybrid cypress]

Thanks for the info guys, and yes for my project I’m procedurally moving a ship along a spline using a predefined timeline, I’ll give your suggestions a shot!

And yes my usage of traversing the spline using the timeline exactly matches your description Raap. 😃 I’ll try setting the position of the ship using server time plus ping and see how it goes!

[polar bridge]

went to bed after my last message heh. the problem with widgets being recreated on the HUD begin play is that clearly it spins up a new HUD when the match restarts. so it actually see's that the widget is invalid and creates a new one regardless

[manic pine]

@hybrid cypress you can't do it quite that straight-forwardly. youd need to e.g. override OnRep_ReplicatedWorldTimeSeconds on gamestate where you'd calculate a server/client world time delta(ReplicatedWorldTimeSeconds - GetWorld()->TimeSeconds), then for the ship every tick you'd do something like PredictedServerTime = GetWorld()->TimeSeconds + GameState->ClientServerTimeDelta + PlayerState->Ping, and use that for your time position

[proper olive]

@manic pine I'm getting the teleporting but I'm not sure what you mean, should I just get the tree's location server-side then multicast to set its location or is there more to be done?

[manic pine]

if you wanna simulate the physics on clients then i dont think there's any other simple solution than to sync them up at the end like youre already doing... i guess you could maybe try disabling physics client side and replicate position/rotation continuously with some interpolation on the client between the two latest updates.. not sure how that would end up

[hybrid cypress]

@manic pine Thanks for the detailed explanation! That does sound a bit tricky. If I were to go with your 1st suggestion that would be off by ping/2 and maybe OK for a slow-moving ship, would it pretty much be driving the position updates on the server according the the gamestate’s server time, and doing the same on clients?

[manic pine]

they're the same suggestion... the reason you can't base it entirely on gamestate's server time is that it's only updated ~2 times a second, so your ships on the client side would be stuttering forward weirdly

oh, you dont have to make the delta time yourself btw, it already exists in gamestatebase

ServerWorldTimeSecondsDelta it's called

[hybrid cypress]

Ah I see, alright then I’ll read about overriding the replicated world time from the gamestate and see if I can do it in blueprints as I don’t have any experience working in cpp yet.

[manic pine]

you dont have to override it, its already calculating it for you

not sure if its bp exposed

[hybrid cypress]

Ah I see ok thanks, sorry I’m a noob at some of this and trying to learn

[hybrid cypress]

Hmm, found a link on modifying the engine source to accurately sync the network clock. Maybe I’ll give this a go and see if I can figure out how to use it correctly.
https://medium.com/@invicticide/accurately-syncing-unreals-network-clock-87a3f9262594

[unique thunder]

anyone here have experience with animBPs in a multiplayer game

[winged badger]

do not replicate them, replicate variables that drive them inside the Pawn

and its ok to multicast montages

[unique thunder]

@winged badger yeah that's what I heard, but I'm doing things backwards I think to avoid my logic having to run on tick in the AnimBP.

I'm using this custom enum which is a variable used in the anim graph

In my character, I cast to the AnimBP and set it to change grip poses for the hands

it works fine offline

but in multiplayer, only the server sees the changes

client doesn't even see his own state change

[winged badger]

because input action that changes it is routed directly to server, most likely

BlueprintUpdateAnimation is cheap

[unique thunder]

do I need to set up multicast custom events in my character that trigger this cast to animbp and enum set?

[winged badger]

if you want performance optimizations do not do any BP logic inside the AnimGraphs

[unique thunder]

if I'm setting these states locally in my character, won't I have to cast to the character on tick in the AnimBP to check the state constantly even though it only changes on grip?

[winged badger]

i usually do InputAction -> Server RPC -> PerformAction

and from Server RPC -> Multicast; from Multicast -> PerformAction if NOT LocallyControlled

you're likely to have more then one variable that is interesting to the AnimBP

but if not, event dispatcher is a fine alternative to updating every tick

[unique thunder]

why would casting to AnimBP to set the enum not work in a multiplayer scenario though? The process isn't very different than using event dispatchers since it's still being set in the animBP

[winged badger]

Enum replicated, with Notify, OnRep has a call to the Dispatcher, which has an input of the enum typpe

AnimBP subscribes to it once, and sets its own enum variable in the event handling it

well, i believe your enum is not getting replicated down to the clients at all

[unique thunder]

It exists only in the AnimBP so I figured it would replicate

[winged badger]

put it in the Pawn

and replicate it from there

[unique thunder]

then do I set it in the animBP with the dispatcher like you described

[winged badger]

you can, or use BPUpdateAnimation, or set it directly from OnRep

but it needs to be in the Pawn to replicate, rest is a matter of preference

[unique thunder]

how do I set it inside the AnimBP OnRep from the char

[winged badger]

you don't

i mean

you set the enum variable, replicated with notify

you have whatever you do to change it change it on the Pawn instead of the AnimBP

and then you propagete if from there to the AnimBP

[unique thunder]

using the BPUpdateAnim or by casting to the AnimBP like I already am

[winged badger]

doesn't matter, once you have the correct state on the client's Pawns, rest is just connecting a few wires

[unique thunder]

so as long as the enums are replicated in the character, the AnimBP will show the correct pose on all clients

[winged badger]

yep

(as long as it gets updated from Pawn ofc)

[unique thunder]

it's strange because I have 'speed' and 'direction' variables local to the AnimBP that drive a blendspace and this is replicated fine. Just not custom enums

[winged badger]

or your anim BP has the information needed to calc them independently on server and clients

[unique thunder]

are all clients not always aware of each other's animBP states?

[winged badger]

i mean, if you pull the speed and direction from CMC

CMC replicates that

[unique thunder]

I do, yeah

[winged badger]

so each cient's pawn's movement component is aware of correct velocity

and AnimBP grabs the info from local CMC and calculates Speed and Direction

you can try making them non replicated i do not believe there will be any change

[unique thunder]

how would you do this

or which method would you use

[winged badger]

BlueprintUpdateAnimation since i have about 15 variables to transfer in my project

it would be too much clutter to do anything else then

[unique thunder]

any noticeable performance cost to constantly setting variables?

[winged badger]

not really

its much much worse doing BP logic in anim graph

and warnings for that are suppressed by default

[unique thunder]

I'm just using the animgraph to blend between body & each hand separately, and then I have the Anomotion IK system running through that as well

[winged badger]

i am much better at networking then i am at animation 😃

[unique thunder]

im much better at animation than i am at networking 😫

[winged badger]

but if you do not want to use the BlueprintUpdateAnimation

its ok to access the AnimInstance from OnRep and just set the variable

simple, and out of the main EventGraph

[unique thunder]

hmm

[winged badger]

OnRep happens AFTER the variable has the new value already

[unique thunder]

so I run my logic local in the character, then OnRep cast to the animinstance and set the enum which is local to the animBP?

[winged badger]

so you'd just set the AnimInstance value to Pawn's value for the enum

[unique thunder]

I'm just gonna set it up with the BPUpdate for now

I know for sure that'll work

[fierce haven]

Am I understanding sessions correctly? From my understanding you don’t need to create a session if you are just goin to join by IP, but if you want to advertise your server to your subsystem with some metadata such as server name, max players, etc, that is when a session should be used?

Anyone correct me if I’m wrong about this.. haha

[polar bridge]

did you build your game then move the server executable into the bin folder?

https://wiki.unrealengine.com/Dedicated_Server_Guide_(Windows_%26_Linux)

[bleak lily]

hey so yeah my issue is in my game you choose between two characters but it doesnt replicate for the second person, since the coding is through the widget how would I put it somewhere else for it to be replicated. I tried deleting the widget blueprint and pasting it to the player controller but the button doesnt work now since its not in the widget

any idea how to fix this?

[winged badger]

ButtonClick->GetPlayerOwner->CastToYourPC->CallServerRPC

provided you plugged the PC into owner pin when creating the widget

you can also go with GetOwningPlayerPawn, then RPC from the Pawn

[bleak lily]

what is RPC exactly

because all that stuff I cant see in bp

like I have little to no knowledge in stuff like this so I kinda tried to improvise with this stuff

[thin stratus]

Read my Compendium then

It's pinned to this channel

[bleak lily]

ok thanks

[knotty frost]

has anyone had a chance to mess with Replication Graph in 4.20.x yet?

[bleak lily]

https://gyazo.com/04a456324985fafdfefd07143e5a6709

I think I might be doing this right

[thin stratus]

This is wrong

GetPlayerController 0 refers to the one calling

Since you are on the Server it uses the Server one

You need to use the PlayerController of the Player who wants to control the character

I assume the ServerRPC is inside of your PlayerController?

If yes, use "Self"

[grand kestrel]

GetPlayerController0 gets so massively misused

[thin stratus]

Well mainly because people don't understand what RPCs do

[grand kestrel]

Bunch of YouTube tutorials that have no business being tutorials floating around advocating it's use. If you're using it there's a decent chance your chain of reference needs work

[thin stratus]

And that there are multiple duplicated instances for each player (in most cases)

They just see a Character and think that's the same everywhere

You can use it a lot

If you are referring to the local PlayerController :D

[grand kestrel]

Oh for sure

[swift topaz]

I have encountered an odd problem.

• Spawn Pawn on Server (works)
• Set Actor Location on Server (works)
• Possess pawn (works)
• Move using movement component (works)
• Un-possess pawn (works)
• Set Actor Location on Server (stops working)

Why would SetActorLocation stop working after un-possessing a pawn?

[thin stratus]

Or for local players when using the index

[grand kestrel]

Just that it gets misused and these tutorials tend to just say to use it with no further context

[thin stratus]

Pawn or Character ? @swift topaz

[swift topaz]

Character, sorry

[thin stratus]

In would assume either the Pawn/Character or their MovementComponent filter the call when not having a valid PC

[swift topaz]

When the Character gets spawned it defaults to no PC though.

And can still be moved using the SetActorLocation