#multiplayer | Unreal Source | Page 529

meager spade Mar 20, 2020, 6:31 PM

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for clients to see it

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server wont automatically send stuff to clients

gaunt cliff Mar 20, 2020, 6:31 PM

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The issue that I don't understand

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this is a widget blueprint, which is created within each client instance as I assume

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meaning the code above, should run individually on each client

meager spade Mar 20, 2020, 6:32 PM

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i would NOT be doing all this in a widget blueprint

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that tutorial is not that good

gaunt cliff Mar 20, 2020, 6:32 PM

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Yes, he hardcoded stuff, while he should've been made it scalable (the way i'm trying to do)

meager spade Mar 20, 2020, 6:32 PM

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your "selectable" characters should be in like the GameState

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the widget pulls these characters, and creates a entry for each one

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allowing you select

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so you would have a struct, called say PlayerableCharacters

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and make an array on the GameState called AllPlayerableCharacter or something

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simply set all the player characters, then the UI simply pulls from this (as Gamestate is replicated to all clients)

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then you can do smart things like locking characters selected by other players, etc

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doing it all in the Widget BP is going to be disgusting.

gaunt cliff Mar 20, 2020, 6:35 PM

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then you can do smart things like locking characters selected by other players, etc
@meager spade And you suggest doing that in the GameMode or GameState ?

meager spade Mar 20, 2020, 6:35 PM

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GameState

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GameMode is SERVER only

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clients dont have access to it.

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

Cedric Neukirchen

eXi

Multiplayer Network Compendium

gaunt cliff Mar 20, 2020, 6:37 PM

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Alright, i'll work out juust this part with the gamestate as you have suggested, and then i'll read that pdf, have been in my bookmarks and i was too lazy to read

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Thank you so much for the help

meager spade Mar 20, 2020, 6:38 PM

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dont be lazy

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reading and understanding now, will make your life so much easier.

gaunt cliff Mar 20, 2020, 6:40 PM

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Alrighty then, time to close this UE project, have dinner, take my meds and read the entire thing

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Thanks a bunch mate

gaunt cliff Mar 20, 2020, 7:16 PM

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oh wow, page 9 clearly explained why i was having that issue

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I was accessing "Characters" Array from GameMode (facepalm)

bold heron Mar 20, 2020, 7:44 PM

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Hey guys, I'm having an issue rotating my player controller with a lock on system when in a dedicated server environment. My pawns are set to use controller yaw so I update the controllers rotation. This works perfectly without multiplayer but online it's not looking at the target at all. Any thoughts on why this might be the case?

📎 unknown.png

steep jay Mar 20, 2020, 8:01 PM

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Hi, I'm making a game using the Rolling template, but out of the box the client doesn't seem to be able to move. What would be the best solution to enable this? I'm thinking of making a server event for every input and making the input events call the server events, then calling the movement logic from the server event. But I'm not sure that this is the best way

sly arch Mar 20, 2020, 8:37 PM

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@steep jay You might have to update your DefaultInput.ini or just add the inputs in the package settings

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And to answer the other part of your question, im not really sure lol

steep jay Mar 20, 2020, 8:38 PM

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I'm not sure what you mean, the inputs are fine (i think)

sly arch Mar 20, 2020, 8:38 PM

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Oh, well nvm then lol

cerulean escarp Mar 20, 2020, 9:44 PM

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what's the best way to spawn widgets for different players on a dedicated server? I'm having a very hard time spawning widgets for the right player from the actual character BP, and I assume there's a better place to spawn widgets from. where's the best place to handle all that widget spawning?

bold heron Mar 20, 2020, 9:44 PM

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servers can't have widgets. use a multicast on the player controller and spawn them on the clients

cerulean escarp Mar 20, 2020, 9:45 PM

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so do the create widget node from the player controller BP?

bold heron Mar 20, 2020, 9:47 PM

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yeah on the server call a client function.

cerulean escarp Mar 20, 2020, 9:48 PM

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I can't believe I didn't think to do that...

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it makes so much more sense

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thank you

bold heron Mar 20, 2020, 9:48 PM

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no problem

rare gyro Mar 20, 2020, 10:26 PM

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So with the introduction of ReplicationGraph, has anyone benchmarked the limit of a single server instance in the terms of max players?

crystal crag Mar 20, 2020, 10:48 PM

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Where did the Auto Connect to Server checkbox go?

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I don't want the client automatically connected to the server when I click play. That used to be an option...

cerulean escarp Mar 20, 2020, 11:05 PM

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I don't see it either, Idk where it went

half jewel Mar 20, 2020, 11:39 PM

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@rare gyro im interested in this as well. of corse it depends on the game, but what about a blank game with just a bunch of standard players connected?

is there a way to simulate a large number of players, without having to open a bunch of copies of the game? like a console only ue4 application sending/recieving data from the server acting like a full client?

crystal crag Mar 20, 2020, 11:56 PM

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I don't know why they would remove it. I want to simulate a real situation where the game is just a client that has yet to connect to a server

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without having to launch the game outside of PIE

half jewel Mar 21, 2020, 12:54 AM

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@crystal crag you have to play around with the checkboxes to show it

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dedicated server checkbox and single process checkbox unhides hidden options that are used regardless of their parent checkbox status

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with these checkboxes checked i unlock the option

📎 unknown.png

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4.24.3

crystal crag Mar 21, 2020, 2:20 AM

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@half jewel but wait, before you didn't have to use a single process did you?

half jewel Mar 21, 2020, 2:25 AM

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i dint have single process no

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u check it, to unlock the auto connect option, set the option to w/e you want then you can uncheck single process if you want

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auto connect to server is still honored as stupid as it seems

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theres another option that does that too with the window sizes, i forget the combination for that one 🤣

mighty yoke Mar 21, 2020, 5:05 AM

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Where should menu management live? Like if you have several different menus the player can bring up/navigate between, with information about things like their own inventory and stats or other's players stats. You want to know if a menu is being displayed to cleanly switch between them right? So some kind of centralized menu manager is needed?
I was thinking playercontroller.

bitter oriole Mar 21, 2020, 5:37 AM

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HUD class is perfect

tardy orchid Mar 21, 2020, 7:54 AM

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@bitter oriole well I tried changing the variable on server but it didn't change at all and if I set the RPC to not be replicated or multicast or run on owning client, the (SomeoneIn) changed variable is only visible to the player that got in
@tardy orchid Ok so I read the network compedium and realised that I need to use the Event Possesed and now it works

narrow prairie Mar 21, 2020, 8:24 AM

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question: if i fire a projectile, on server/client model. event hit does trigger: if i switch to dedicated server (checkmark) the event on hit is not beeing fired. anyone has a idea what that might be?

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it spawns the projectile, i made a print string on event construct

mighty rover Mar 21, 2020, 9:16 AM

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is there a way to check if the dedicated server is running, (i.e. hasn't quit/shutdown unexpectedly) from the client?

bitter oriole Mar 21, 2020, 10:00 AM

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If the server has quit or crashed or disconnected or... the client will be disconnected immediately

scarlet cypress Mar 21, 2020, 10:45 AM

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How hard is it to make a multiplayer running on dedicated servers? I did already make a simple host/join multiplayer, and i mastered singleplayer development. Is multiplayer with a dedicated server much harder to make?

thin stratus Mar 21, 2020, 11:12 AM

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Yes, No, Maybe.

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DedicatedServer:

Has to be build with source
Has to be hosted somewhere ($$$)
Is a lot more annoying if you want to use it with Steam

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Despite that, it's more or less the same coding. You only need to filter graphical adjustments that usually the ListenServer also does.

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Like hiding something or showing UI etc.

crystal crag Mar 21, 2020, 1:34 PM

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@half jewel ty that worked

dark hazel Mar 21, 2020, 3:34 PM

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Hi all, we have a multiplayer project which is currently moving along nicely but only dev testing with steam.

Ideally we want to run this p2p with a master server list, I was wondering if there was such a solution out there already for this?.

We cam across an old python master server but that doesn't seem to work correctly when a client joins the session.

Any help, tips or tricks for this would be greatly appreciated.

Thanks

gaunt cliff Mar 21, 2020, 3:40 PM

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As the fella above me mentioned, any one know of a service to provide cossplay (PC and Mobile playing together on the same server)

chrome bay Mar 21, 2020, 3:50 PM

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Have a look at Gamesparks, Playfab etc.

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None are free though AFAIK. GS got bought out by amazon and the prices went through the roof.

fleet raven Mar 21, 2020, 3:52 PM

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of course, amazon web scam can't have sensible pricing

dark hazel Mar 21, 2020, 4:04 PM

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Has anybody tried this and got it to work ? https://github.com/RyroNZ/UE4MasterServer

For me I can compile all fine, server hosts fine and shows on masterserver the client says the session joined but doesn't travel to the level at all, apart from that it seems to work, I'm still lookin into why this doesn't travel after JoinSession any ideas on this would be awesome

GitHub

RyroNZ/UE4MasterServer

This is a plugin for Unreal Engine 4 that adds server registration, deregistration etc with a master server. - RyroNZ/UE4MasterServer

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It is an old project but still compiles upto the latest 4.23/4.34 ok and includes example, just doesnt join 😦

crystal crag Mar 21, 2020, 5:18 PM

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I'm getting this error everytime I try to switch to a different dedicated server:
[2020.03.21-17.17.25:765][430]LogWorld: Warning: SetActiveLevelCollection attempted to use an out of date NetDriver: GameNetDriver

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Has anyone encountered this before?

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I have a client, which upon start up it tries to find the first server, which is dedicated to letting the player select their character. Then I have a second dedicated server running the main game map. I connect to the first server just fine. I'm getting the error message above when I switch to the second server.

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Do I have to first explicitly call a disconnect method from the server on the client before switching to the second dedicated server?

karmic briar Mar 21, 2020, 5:44 PM

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hey guys i wanna ask does HUD replicate on the server or its only exist on the client

pearl pollen Mar 21, 2020, 5:45 PM

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Is there a way for two RPCs sent one after another to ensure that they arrive at the client (or get processed by the client's code) in that particular order?
.

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@karmic briar It's client-only

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Or at least it should be. UI was never a server-side thing

jolly siren Mar 21, 2020, 5:49 PM

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Order is already respected with reliable rpcs

pearl pollen Mar 21, 2020, 5:49 PM

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So it's ensured by the engine? 😄

jolly siren Mar 21, 2020, 5:50 PM

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yes, if you are using reliable

pearl pollen Mar 21, 2020, 5:50 PM

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❤️

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Thank you

jolly siren Mar 21, 2020, 5:50 PM

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np

half jewel Mar 21, 2020, 6:39 PM

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no trouble with 4.24.3

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you might have turned on the new 4.24 network simulation settings by accident ?

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@lament cloak

📎 unknown.png

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well i guess turn the simulation on in this case to see if you can duplicate it in PIE 🤷‍♂️ could be a problem with how things are designed on your end

hoary lark Mar 21, 2020, 8:25 PM

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@pearl pollen FYI I believe order is only preserved for reliable RPCs sent per a given actor. If you call two reliable RPCs from different actors the order may not be guaranteed

pearl pollen Mar 21, 2020, 8:27 PM

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Do different actor components within one actor still count as one actor?

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@hoary lark

hoary lark Mar 21, 2020, 8:29 PM

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I don't know 😄 I would think so

cobalt whale Mar 21, 2020, 9:23 PM

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hi there. i just need to know some stuffs

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theres anyone who know networking stuff?

bitter oriole Mar 21, 2020, 9:28 PM

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Ask questions directly

crystal crag Mar 21, 2020, 9:38 PM

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Hey no one answered my question from earlier so let me try asking it a different way

cobalt whale Mar 21, 2020, 9:38 PM

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im just making a kind of battle royale game, but im not sure if i will efectivelly make a battle royal. the question was that, i want to do a skin system more or less like fortnite, and i tough i need a database, im right with that? and if yes or not, what do i need to do it?

crystal crag Mar 21, 2020, 9:38 PM

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if I am a client, already connected to a dedicated server, and I wish to switch to to a different dedicated server, do I first have to call destroy session before I call SessionInterface->JoinSession(...)?

cobalt whale Mar 21, 2020, 9:41 PM

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im just making a kind of battle royale game, but im not sure if i will efectivelly make a battle royal. the question was that, i want to do a skin system more or less like fortnite, and i tough i need a database, im right with that? and if yes or not, what do i need to do it?
@cobalt whale to simplify the question. how can i make a overwatch like looting crates, skins and thoose stuff. how can the game reconize if X person have that skin or have to buy it,

jolly siren Mar 21, 2020, 9:41 PM

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@crystal crag yes

cobalt whale Mar 21, 2020, 9:42 PM

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i just need a place where i can read many documentations or examples

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like , an account system

harsh lintel Mar 21, 2020, 10:40 PM

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Im using FRootMotionSource_ConstantForce but it's not a smooth movement on clients, is there something else I could use? Someone told me it was bugged

normal garden Mar 22, 2020, 12:21 AM

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How would I go about spawning gun effects such as shooting and muzzle flash so other people can see it?

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As in, would I do the effects on the client then on the server?

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I'm not sure

normal garden Mar 22, 2020, 12:44 AM

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Would I do something like this?

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📎 unknown.png

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📎 unknown.png

ocean geyser Mar 22, 2020, 1:43 AM

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@normal garden play the effect on client, make call to server telling it that your trying to shoot, the server toggles a onrep variable that plays the effects (or starts timer if doing full auto fire)

normal garden Mar 22, 2020, 1:46 AM

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@ocean geyser Thanks 🙂

karmic briar Mar 22, 2020, 7:27 AM

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hey guys so im asking on behalf on my friend from this stream he's trying to update chromium to the latest version but having problems(i cant remember what problem)
anyone have tried updating chromium to the latest ver?
https://www.youtube.com/watch?v=ofqQA6dvyVY

YouTube

Flopperam

Working on Amazon GameLift Tutorials (Testing and Refining Part 2)

In this stream, we will start testing and refining the tutorial project. This is the final home stretch.

Join our Discord: https://discord.gg/2xbR5qT
Support us on Patreon: https://www.patreon.com/flopperam
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▶ Play video

forest kettle Mar 22, 2020, 2:35 PM

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@next fable GameInstance is one of the only thing that doesn't get destroyed when you travel to a new map. Try putting it in there or otherwise, you have to flag the PlayerState as persistant
@glass plaza This is interesting!
How do I flag it? Adding a tag? Is there any side effects to do that?

Thanks in advance

crystal crag Mar 22, 2020, 2:43 PM

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When I call DestroySession on the client, then CreateSession seems to automatically be getting called (I have a OnCreatedSession delegate that writes a UE_LOG)... is this normal?

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What session is it creating? I would think I would be put into a disconnected state if I destroyed my session

crystal crag Mar 22, 2020, 3:11 PM

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and even though I call destroy session is seems that I am still connected to the dedicated server

lunar root Mar 22, 2020, 3:29 PM

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Hey, does someone has experience with an FPS Game? I'm trying to seperate the FirstPerson mesh from the ThirdPerson mesh. It works so far but now I crossed the problem that I don't know where to attach my weapons too. Before I just attachted it to the single SkeletonMesh I had, but now I got two Meshes and either I attach it to the Arms (First Person), which results in a floating weapon for others since the arms have OnlyOwnerSee set to true, or I attach it to the Character (Third Person), and everyone sees the Weapon except the owner. I was thinking about duplicating the Actor somehow, but this seems more like a Hacky solution thats why I'm asking if some of you already found a solution for this and if my approach is the correct one.

frank portal Mar 22, 2020, 6:41 PM

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@lunar root just create 2 weapon meshes like the character meshes and attach one to the 1P Character and the other one to the 3P Character and handle the visibility with OnlyOwnerSee etc.

crystal crag Mar 22, 2020, 6:57 PM

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Ok, so I just decided to switch to the second dedicated server within the create session completion callback. I get to the second dedicated server, but my character falls through the map and he disappears about 1.5-2s after his feet slip through the ground.

crystal crag Mar 22, 2020, 7:39 PM

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It's really hard to get replies in this channel. Let me try it a different way then. How do you properly as a client with a current session disconnect from a dedicated server? Apparently calling DestroySession from the client is not the way to go

lunar root Mar 22, 2020, 8:24 PM

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@frank portal aight thank you, Just wasnt Sure If this was the best solution or Just a workaround 👍

frank portal Mar 22, 2020, 8:36 PM

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@lunar root but dont duplicate the actor just use 1 actor with 2meshes

lunar root Mar 22, 2020, 9:08 PM

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OMG true, Idk I think I brainlagged, somehow I forgot that I can add multiple meshes to one actor insteadof cloning the actor. Thank you man!

dark edge Mar 22, 2020, 9:23 PM

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What's the approach to syncing randomness? Like if I wanted bullet random spread to be identical between server and client.

viscid escarp Mar 22, 2020, 9:28 PM

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Hello guys! Quick question: to make dedicated server work with steam i have to create a new App ID of type TOOL?

hoary lark Mar 22, 2020, 9:44 PM

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@dark edge whoever initiates the event locally generates a random seed, pass it along with the event. Everyone uses the same seed to generate a local random stream.

rose prawn Mar 22, 2020, 10:03 PM

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Is it possible to replicate Procedural Mesh Component with blueprints?

cunning shoal Mar 23, 2020, 2:49 AM

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Hello - Would it be a ridiculous idea to ask for help with multiplayer jitteriness when trying to do a line trace to figure out how close to a wall my character is, and then using add force to push them away? Works great on the host, clients it looks choppy

thin stratus Mar 23, 2020, 7:30 AM

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Mostly cause this kind of stuff should only happen on the Server.

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Anything that comes from the client directly needs to go through the CMC to have the same timestamp.

late bluff Mar 23, 2020, 9:54 AM

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Hello, when making a multiplayer RTS like environment with a free camera, are the players conventionally in spectate mode or possessing an invisible pawn?

forest kettle Mar 23, 2020, 10:13 AM

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Hi all,
How do you servertravel from one map to another? I can servertravel once to one Level1. When I try to do the exact same thing to travel to Level2 the game crashes (EXCEPTION_ACCESS_VIOLATION reading address 0x00000068)!
I have same GameMode on both Level with seamless enabled!
UE4.24.3 btw

winged badger Mar 23, 2020, 12:18 PM

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usually its the travel map that crashes

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and usually its a widget that should had been cleaned up

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you'll have to do lot better then exception_access_violation tho

graceful abyss Mar 23, 2020, 12:54 PM

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Hi, I have a problem with my multiplayer game as soon as there is more then 1 client apart from the server player.
https://answers.unrealengine.com/questions/950060/view.html

Does anyeone have a remote idea what could cause this?

steep cipher Mar 23, 2020, 1:16 PM

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please include the entire crashlog

graceful abyss Mar 23, 2020, 1:18 PM

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under saved/logs?

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This?

📎 RTS_Heroes.log

meager spade Mar 23, 2020, 1:34 PM

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its crashing when copying a property

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struct property

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but without knowing anymore, i cant tell you what Struct is broken

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is this shipping?

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have you tried using Debug Game?

graceful abyss Mar 23, 2020, 1:35 PM

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it's in a packaged game

steep cipher Mar 23, 2020, 1:36 PM

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seems to be an issue in BP_Common_Building_C

meager spade Mar 23, 2020, 1:36 PM

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yes packaged but what, Shipping, Debug or Development

steep cipher Mar 23, 2020, 1:36 PM

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BP_Common_PlayerController_C.ROOC_SpawnLocalBuilding

meager spade Mar 23, 2020, 1:36 PM

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yeah but doesn't point what struct is actually broken

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but i would start looing as ytour SpawnLocalBuilding as it seems to be the thing that happened

steep cipher Mar 23, 2020, 1:37 PM

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yeah

meager spade Mar 23, 2020, 1:37 PM

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SpawnAppearentActor

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AppearenceActor

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was the last thing called

graceful abyss Mar 23, 2020, 1:38 PM

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is the type of packaged game set in the project settings? I think it's at default. I'll check quickly. Just starting up the project

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otherwise thankyou for the pointers so ffar

meager spade Mar 23, 2020, 1:39 PM

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https://www.thegames.dev/snaps/UE4Editor_Z4bGnOYcLN.png

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in packaging settings

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there is Build Condif

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Config

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select debug

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DebugGame*

graceful abyss Mar 23, 2020, 1:39 PM

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👍

meager spade Mar 23, 2020, 1:40 PM

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ensure debug files is enabled

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when crash happens, you can get a minidump, which can be used to see exactly what happened at crash time (though that is not easy to do)

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last time i saw this crash was: Struct with the same name in BP and C++ or corrupted blueprint

graceful abyss Mar 23, 2020, 1:43 PM

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Will do as you suggest and post the resulting log later. Will take a bit.

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Again thankyou for all the pointers.

cobalt whale Mar 23, 2020, 2:04 PM

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anyone with database knowledge?

bitter oriole Mar 23, 2020, 2:05 PM

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Ask your questions

cobalt whale Mar 23, 2020, 2:06 PM

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i just want a system where the player login and register automatically with stem using the unique id. i know how to transfer data to my mysql database to the client , but if i want to take the data from the client taking the unique id from the onlinesub-system of steam i cant send it to the database

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or just tell me what is more convenient for me, i just want to make an in game online shop

bitter oriole Mar 23, 2020, 2:08 PM

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Well, your client should never connect directly to a database

cobalt whale Mar 23, 2020, 2:09 PM

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i know that

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i want to use a php page

bitter oriole Mar 23, 2020, 2:10 PM

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Take a look at Steam's API for this stuff, IIRC you need to ask them for a key so that your server can authenticate players based on their id

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And then you can directly talk to your DB on the server

cobalt whale Mar 23, 2020, 2:11 PM

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im taking example with darwin project, i want the same game opening

bitter oriole Mar 23, 2020, 2:12 PM

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No idea about that

cobalt whale Mar 23, 2020, 2:14 PM

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btw im using varest

hollow breach Mar 23, 2020, 2:23 PM

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Anybody have idea about how to implement auto movement and attack system in unreal multiplayer game (MOBA or 3rd person). I tried using SimpleMoveToActor function but the movement is not happening on other connected players?

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Basically I wanted to know how to achieve auto movements with player controller in Multiplayer environment..

graceful abyss Mar 23, 2020, 2:42 PM

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@meager spade If you have time to look, here are the logfiles from the crash on the debug game.

📎 Crashlog.7z

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I will actually try to interpret them myself, too

meager spade Mar 23, 2020, 2:50 PM

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so

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you have a struct looks like CPP_Building (inside Blueprint of it)

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and you calling SetStruct

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like setting struct properties

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thing is the struct looks like its not the same

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[2020.03.23-14.39.04:730][613]LogWindows: Error: [Callstack] 0x00007ff686651290 RTS_Heroes-Win64-DebugGame.exe!FDebug::CheckVerifyFailedImpl() []
[2020.03.23-14.39.04:730][613]LogWindows: Error: [Callstack] 0x00007ff6869cc207 RTS_Heroes-Win64-DebugGame.exe!UScriptStruct::CopyScriptStruct() []
[2020.03.23-14.39.04:730][613]LogWindows: Error: [Callstack] 0x00007ff688e82c00 RTS_Heroes-Win64-DebugGame.exe!UKismetSystemLibrary::Generic_SetStructurePropertyByName() []
[2020.03.23-14.39.04:730][613]LogWindows: Error: [Callstack] 0x00007ff689810ab8 RTS_Heroes-Win64-DebugGame.exe!UKismetSystemLibrary::execSetStructurePropertyByName() []```

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this here

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https://www.thegames.dev/snaps/devenv_nneuyGr2Bs.png

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crash is from here

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do you have a SetCollisionProfileByName node?

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in that bp by any chance

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or any set struct node

graceful abyss Mar 23, 2020, 2:56 PM

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one second

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is there any chance it happens here?

📎 screen.png

meager spade Mar 23, 2020, 2:59 PM

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very possible

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try disconnecting it?

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and see if it crashes

graceful abyss Mar 23, 2020, 2:59 PM

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👍

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i suspect that the commander pawn is not completely replicated at this point

meager spade Mar 23, 2020, 3:00 PM

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very likely aswell

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tho that would throw an error

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Commander is invalid

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    BP_Common_Building_C /Game/Game/Maps/Map02/Lvl_Map02.Lvl_Map02:PersistentLevel.BP_Common_Building_C_2147481313
    Function /Game/Game/Common/Blueprints/Buildings/BP_Common_Building.BP_Common_Building_C:spawnAppearanceActor:0069
[2020.03.23-14.38.38:190][613]LogScript: Warning: Script call stack:
    Function /Game/Game/Common/Blueprints/Buildings/BP_Common_Building.BP_Common_Building_C:ReceiveBeginPlay
    Function /Game/Game/Common/Blueprints/Buildings/BP_Common_Building.BP_Common_Building_C:ExecuteUbergraph_BP_Common_Building
    Function /Game/Game/Common/Blueprints/Buildings/BP_Common_Building.BP_Common_Building_C:NR_Setup
    Function /Game/Game/Common/Blueprints/Buildings/BP_Common_Building.BP_Common_Building_C:ExecuteUbergraph_BP_Common_Building
    Function /Game/Game/Common/Blueprints/Buildings/BP_Common_Building.BP_Common_Building_C:Setup
    Function /Game/Game/Common/Blueprints/Buildings/BP_Common_Building.BP_Common_Building_C:spawnAppearanceActor```

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so it does

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then it crashes

graceful abyss Mar 23, 2020, 3:02 PM

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I had the problem in another blueprint that the commander was not fully replicated when the object was created and i needed to go into a waiting loop or even retrieve the commander in a different way to get it properly

meager spade Mar 23, 2020, 3:02 PM

#

yeah replication race issues are a nightmare

#

you never know which actor is gonna rep first to the client

#

we handle that with first replication, we call a OnRep on clients, which fires a delegate, then we know that actor is there and ready

graceful abyss Mar 23, 2020, 3:05 PM

#

Great, then I'll work on addressing this. Thanks again for the help.

forest kettle Mar 23, 2020, 3:26 PM

#

you'll have to do lot better then exception_access_violation tho
@winged badger Cheers buddy
How can I explain better? What information you need? I'm traveling in the GameInstance. I also tried GameMode. Same problem 😦

winged badger Mar 23, 2020, 3:26 PM

#

install debug symbols for the editor

#

then try again, with the entire callstack

forest kettle Mar 23, 2020, 3:28 PM

#

Debug Symbols is a new thing to me! Is it a plugin in the editor or is a windows thing?

solar stirrup Mar 23, 2020, 3:30 PM

#

Is it possible to switch player controller at runtime?

half jewel Mar 23, 2020, 4:38 PM

#

sounds like a nightmare, what you trying to do @solar stirrup ?

solar stirrup Mar 23, 2020, 4:42 PM

#

Naaah changed my mind

#

I'll just have two different modes in my controller

forest kettle Mar 23, 2020, 4:52 PM

#

If you guys having same my problem then make sure you don't mix Base and regular (non-base) classes in your game mode. Here's my error message

LogGameState: Mixing AGameState with AGameModeBase is not compatible. Change AGameModeBase subclass to derive from AGameMode, or make both derive from Base

Best wishes

Hi all,
How do you servertravel from one map to another? I can servertravel once to one Level1. When I try to do the exact same thing to travel to Level2 the game crashes (EXCEPTION_ACCESS_VIOLATION reading address 0x00000068)!
I have same GameMode on both Level with seamless enabled!
UE4.24.3 btw
@forest kettle

solar stirrup Mar 23, 2020, 6:09 PM

#

What does bNetForce do in AActor::Destroy(bNetForce, bShouldModifyLevel)?

plain turtle Mar 23, 2020, 6:12 PM

#

Hello Guys!! I am trying to replicate an Event Dispathcer from a Character_BP to a Widget. Locally ,it works perfect, but when I try it on the dedicated server mode it does not work , it seems that the widget does not recive the event dispatcher from the Character. Any suggestions? Thank you very much!

fleet raven Mar 23, 2020, 6:16 PM

#

@solar stirrup allows destroying replicated actor on client side

solar stirrup Mar 23, 2020, 6:18 PM

#

👌

plain turtle Mar 23, 2020, 6:19 PM

#

Okay, I got it. I only had to create the Multicast and Run on Server Method before sending the Dispatcher! Depending if it was the authority or not

weary mortar Mar 23, 2020, 6:21 PM

#

Hi all I maybe have a simple question...but is driving me nuts

ocean geyser Mar 23, 2020, 6:21 PM

#

ask away

weary mortar Mar 23, 2020, 6:21 PM

#

How could I know from the GameMode of my game, the role of every single playercontroller?

ocean geyser Mar 23, 2020, 6:22 PM

#

get a list of player controllers or store/remove player controllers that have passed through the post login function

#

sryt abbing in and out of game

weary mortar Mar 23, 2020, 6:22 PM

#

but in the postlogin all player controllers seems to be Server

#

maybe am I getting them wrong?

ocean geyser Mar 23, 2020, 6:23 PM

#

postlogin runs on server

#

the gamemode runs on the server afaik

weary mortar Mar 23, 2020, 6:24 PM

#

yep... that's my problem... every playercontroller I get from there, is a ROLE_Authority

ocean geyser Mar 23, 2020, 6:26 PM

#

well player controllers are only replicated between the server and the owning client

#

so you need them on the client?

weary mortar Mar 23, 2020, 6:28 PM

#

I need to know from the GameMode when the player on the server, enters on some area of the map...

ocean geyser Mar 23, 2020, 6:29 PM

#

how do you currently have it setup to detect a player?

weary mortar Mar 23, 2020, 6:29 PM

#

So, I need to ask from GameMode (that runs in server) who from my players has the ROLE_Authority

ocean geyser Mar 23, 2020, 6:29 PM

#

you can place down a box volume and detect (on the server) when a player enters(overlap event) the volume by casting the actor to your players actor/character, then call the function on the gamemode

weary mortar Mar 23, 2020, 6:31 PM

#

yep I'm doing that way (very similar) but if a Client enters that volume, my GameMode is not able to identify him as a Client.... GM always thinks that the player entering is the server

ocean geyser Mar 23, 2020, 6:31 PM

#

create a custom volume

#

actor

#

with a box volume, create an overlap event on that box volume

weary mortar Mar 23, 2020, 6:34 PM

#

yes I'm doing that way, when someone overlaps, I modify a property on that player's GameInstance

#

I'm going to double-check if everything is setting up correctly 🙂

#

thanks for your time @ocean geyser I'll be back with answers on this 😄

ocean geyser Mar 23, 2020, 6:36 PM

#

yea just custom actor with a box volume, create an overlap event on it that only fires on the server, when player enters it have the server do whatever you need to do (such as call a funciton on the game mode)

solar stirrup Mar 23, 2020, 6:39 PM

#

Replicated subobjects still need to be set in GetLifetimeReplicatedProps right?

toxic schooner Mar 23, 2020, 7:47 PM

#

might not be the right place to ask, but can anyone help me with portforwarding?

#

I've portforwarded before on a wifi connected computer, but right now I'm trying to do it on a computer connected to a wifi extender

#

My local ip on the extender comp starts with 10.0.1. while other successfully portforwarded systems are 192

#

The static ip i set 10.0.1.31 wont port forward no matter what I do 😦

cobalt whale Mar 23, 2020, 9:01 PM

#

No idea about that
@bitter oriole i did it

#

😄

thin stratus Mar 23, 2020, 9:48 PM

#

@solar stirrup Is your pc not listed on the router itself?

#

It must have given you an ip too

solar stirrup Mar 23, 2020, 9:48 PM

#

👀

#

Wrong ping @thin stratus :^)

#

@toxic schooner ^

fleet raven Mar 23, 2020, 9:49 PM

#

br_ping

thin stratus Mar 23, 2020, 9:51 PM

#

Big fingers hit the wrong username

solar stirrup Mar 23, 2020, 9:51 PM

#

mmLul

toxic schooner Mar 23, 2020, 10:01 PM

#

so my wifi extenders have a 192 port but all devices are 10

#

so the 10.0.1.21 port should work but it doesnt

#

ip not port*

#

In my router settings I have IP: 10.0.1.21, then the destination and forward ports to the port i want

harsh fossil Mar 23, 2020, 10:42 PM

#

i can't join a session even if its lan
is there anynone familiar with sessions ?

shadow folio Mar 24, 2020, 12:06 AM

#

Is the BeginPlay() in GameModeBase the best place to start to look for actors spawned in the level upon startup? I am placing actors in the level and then looking for them in code to take different actions. Is there a better place to do this?

crystal crag Mar 24, 2020, 12:26 AM

#

Is there anyone in here that will ever help me? Desperately trying to get past this problem. I created a brand new C++ project based off of the TP template. I have dumbed the project down to where I am simply having the client connect to the game server by finding its session. The server creates the session upon start up. The client joins and my character just falls through the map.

#

I've tried so many different approaches now. I'm at a complete loss as to what to do

crimson patio Mar 24, 2020, 1:23 AM

#

My AnimBP for character replicates look/aim fine, but I cannot find a simple way to get the Character's aim value from the Blueprint. I want to accomplish server side aim calculations so cannot use camera manager. What's best way to get aim (or at least pitch) value server side?

#

I can see how potentially using AnimBP values could work, but that seems wrong.

twin minnow Mar 24, 2020, 1:40 AM

#

hey guys, for some reason when I call GameSession->KickPlayer() on the server, it is not working in the sense that the player is still in the server level after calling OpenLevel. Is this normal?

crimson patio Mar 24, 2020, 3:55 AM

#

I figured it out, here's solution incase anyone else wondering:

📎 unknown.png

thin stratus Mar 24, 2020, 6:05 AM

#

@twin juniper Not that I know off. Maybe the examples but everything is so fundamental that it should stay up-to-date

thin stratus Mar 24, 2020, 6:26 AM

#

@twin minnow Kickplayer destroys pawn and controller. That should be enough

polar wing Mar 24, 2020, 10:25 AM

#

@crystal crag Try moving the character spawn location up a little bit (might be clipping through the floor and causing the issue, although the system usually accounts for that). You can also try changing the collision presets on your character's collision capsule.

crystal crag Mar 24, 2020, 12:03 PM

#

@polar wing thank you! Finally someone at least is trying to help with something that should be simple. Sadly, I already tried that. Additonally, if I play in the editor and use a dedicated server (different processes), my character falls to the ground and stays there. In my project settings, I have the server start on the game map and I have the editor and game map set to an empty client level. Upon game start for the client, it calls find sessions and then joins the server session. This works and I don't see any errors in the server or client console. But on the client, my character falls a few feet, hits the ground, pauses for maybe .7s, then falls through the floor and disappears from the world all together

crystal crag Mar 24, 2020, 12:54 PM

#

I'm going to create a new project again that targets 4.24.3 and try once more during my lunch today

hardy flame Mar 24, 2020, 12:55 PM

#

Hello Everyone, I'm in need of some help accessing every players save game on a multiplayer project.
I'm making a multiplayer game where every player has a save file with their own name. The name is set at launch if no save game is detected. The issue is I'm trying to implement a scoreboard, where I want to show, among other things, the name the player has set on their own save file and I'm having issues with that where or everyone gets the same name as the server or everyone gets the same name from their own local save game file. I've been at this for days and can't seem to figure out a way to replicate every players name to the scoreboard on everyone's game. It's driving me crazy. Here's what I have so far, have in mind that I've changed things around a lot
this is in the character blueprint

#

this is in the character blueprint

📎 unknown.png

bitter oriole Mar 24, 2020, 12:56 PM

#

Every player should send the save data to the server with a RPC ("run on server"), and the server can use the data when it receives it

hardy flame Mar 24, 2020, 12:56 PM

#

this is also in the character blueprint

📎 unknown.png

#

Upon creating the widget a child is added to a widget, PlayerInfo
I'm fairly new to this and would like to implement this in blueprints
what is currently happening is that everyone gets the same name as the server who hosts the game
I'm really scratching my head with this
I've implemented something similar with a chat following a youtube tutorial but cant seem to figure this out
with two computers, with two different steam accounts and save game files

#

📎 unknown.png

bitter oriole Mar 24, 2020, 12:57 PM

#

Just have every client (authority == false) send the save data on begin play

#

Probably better to do in player controller too

#

Reminder that replication only works from server to clients

hardy flame Mar 24, 2020, 12:58 PM

#

this is how im saving the game, inside the options widget

📎 unknown.png

#

how do I do that?

bitter oriole Mar 24, 2020, 12:59 PM

#

Just have every client (authority == false) send the save data on begin play

#

Every player should send the save data to the server with a RPC ("run on server")

#

Add a "run on server " method and call it from clients

#

And you're basically done

#

You might want to read up on all the tools you can use for multiplayer code here : https://docs.unrealengine.com/en-US/Gameplay/Networking/Blueprints/index.html

Multiplayer in Blueprints

The various aspects of multiplayer applied to Blueprints.

#

It's quite short and really, outside of this page, there's nothing more to know about multiplayer

hardy flame Mar 24, 2020, 1:02 PM

#

thank you so much man really

#

but about what you said about having every client authority == false and adding that run on server method how do I go about it? I mean where do I put that, in wich blueprint?

#

also do you think that the way i've structured this thing to do that is doable? or I'm too far off?

bitter oriole Mar 24, 2020, 1:04 PM

#

It doesn't really matter, other than the Blueprint has to be client-owned, so PlayerController and Character are obvious choices

#

Client ownership is required for RPCs

#

And I don't think anything you've done is a problem, just think clearly (maybe on paper) about how the data should move around

#

Keep in mind that clients can only talk to the server with RPC, the server can talk to clients with variable replication or RPC but replication is almost always better

#

So you have two tools and the logic on top of it is up to you

#

By the way, the player's name is something that already exists in PlayerState.

#

So you can change that on server when you receive the client RPC and it will just work

hardy flame Mar 24, 2020, 2:01 PM

#

Thank you so much for your time and patience

#

I will keep trying

#

to try and get all player names from save file I did this

#

📎 unknown.png

#

which calls this

#

📎 unknown.png

#

But everyone gets the same name as the server

#

And I can't figure out why

#

This first event, the GetNamesPls executes on the server, which loads and sets the player names from the save files, to the SavedPlayerName and Avatar vars and calls the ClientUpdate to create the wodget, which is set to Multicast

#

The event GetNamesPls is set to run on event BeginPlay

hardy flame Mar 24, 2020, 2:40 PM

#

If anyone could see help me figure this thing out would be great because I'm really stuck on this

cobalt whale Mar 24, 2020, 3:36 PM

#

should i use mysql as database for items in game?

meager spade Mar 24, 2020, 3:37 PM

#

whatever your comfortable with

#

you should not have SQL connections on the client

cobalt whale Mar 24, 2020, 3:37 PM

#

i use php

#

with varest

meager spade Mar 24, 2020, 3:37 PM

#

then use whatever

#

you are comfortable with

#

NOSQL, MySQL, sqlite, w/e

cobalt whale Mar 24, 2020, 3:38 PM

#

so doesent matter

#

you should not have SQL connections on the client
@meager spade
even with php?

meager spade Mar 24, 2020, 3:39 PM

#

no thats on a server

cobalt whale Mar 24, 2020, 3:39 PM

#

perfect 😄

meager spade Mar 24, 2020, 3:39 PM

#

clients should send/recieve through some API

#

PHP/VaRest

#

or w/e

cobalt whale Mar 24, 2020, 3:40 PM

#

this is what i did

📎 unknown.png

stiff plank Mar 24, 2020, 4:05 PM

#

So i am trying to follow this guide, https://wiki.unrealengine.com/Dedicated_Server_Guide_(Windows_%26_Linux), but when i try to build it in VS, i get these errors. Any1 have any idea what is going on here?

📎 unknown.png

unique kelp Mar 24, 2020, 4:24 PM

#

I am spawning my players in a separate play area while all players connect, and once they have, I move them to spawn points (from the server, replicated automatically) yet for a few seconds after this relocation they seem to be accumulating and discarding moves that never get sent to the server. It probably has something to do with the channel getting saturated, since other reliable rpcs (shots, aiming direction, ... ) are sent fine, and movement ones are unreliable. However I'm at a loss as to why it would happen with me just manually moving the players from the server and fix itself after a few seconds (on live servers it's closer to a minute)

#

Any of this ring any bells for anyone?

unique kelp Mar 24, 2020, 4:52 PM

#

I just tried another network profile and this one seems to have actually given me a ton more info, so never mind, i'm seeing a lot of client calls that dont need to be there

hardy flame Mar 24, 2020, 4:59 PM

#

any tips on my issue guys? I'm really struggling

narrow prairie Mar 24, 2020, 5:53 PM

#

question: when running the dedicated server and a client join, is it normal that another black screen pops up?

#

is that the server instance of the game

#

?

#

i can close it without the client dropping out, im a bit confused where it comes from

#

it says development next to it.

#

nvm..

#

i made some stupid settings inside project settings

#

ignore this guy here ^^

cobalt whale Mar 24, 2020, 6:22 PM

#

im literally being mad

fossil veldt Mar 24, 2020, 7:44 PM

#

Yo what's the best way to tell everyone in the server to change their HUD, Would I just loop all PlayerController's in the server and run a switchHUD function OnOwningClient?

cobalt whale Mar 24, 2020, 7:48 PM

#

just the server tell this to all client

bitter oriole Mar 24, 2020, 7:48 PM

#

Use a replicated variable with the desired hud type in game state

#

In the HUD class, when the desiredhud type isn't the current one, change to the new hud type

fossil veldt Mar 24, 2020, 7:53 PM

#

Yea good shout

#

Wait OnRep funcs call on GameState for all clients right?

fading birch Mar 24, 2020, 8:03 PM

#

When I have a group of clients on a dedicated server and execute ServerTravel seamlessly, I seem to still have a reference to the old controller in the other map (think Lobby Controller -> In Game Controller). The controller is pending kill, but it's still holding onto the objects and i'm concerned about memory issues. If i run obj gc it removes those references, so is UE just not doing it's garbage collection automatically or should I tell it to do so?

winged badger Mar 24, 2020, 8:06 PM

#

its intended

#

in fact, NotifyWorldLoaded and ServerNotifyWorldLoaded are called on the instance of the lobby controller once you load the game map

#

before they are swapped

#

but the PC does have its own SeamlessTravelActor list, which is the list of Actors that will survive the seamless travel transition

#

you also have PreClientTravel, which is virtual, that is a good place to clean up before travel

#

(all the above mentioned functions are on the player controller)

fading birch Mar 24, 2020, 8:09 PM

#

yeah i was overriding the HandleSeamlessTravelPlayer

#

in the game mode

#

but I can override that in our base controller class as well

winged badger Mar 24, 2020, 8:09 PM

#

lobby controller is pending kill then

fading birch Mar 24, 2020, 8:09 PM

#

yes

#

but it's still showing up in the object list

#

along with all of the widget references it holds too

winged badger Mar 24, 2020, 8:09 PM

#

the Super call of HandleSeamlessTravelPlayer

#

is what swaps the controllers

#

so it will be gone in next GC pass, you literally marked it pending kill a microsecond ago

#

you can override PreClientTravel on lobby controller and null those widget references if it concerns you

fading birch Mar 24, 2020, 8:11 PM

#

I've done that a slightly different way, but yeah

winged badger Mar 24, 2020, 8:11 PM

#

but its only an issue if they arte causing problems in the travel or destination map

fading birch Mar 24, 2020, 8:11 PM

#

should I be concerned about them at all?

#

they aren't

winged badger Mar 24, 2020, 8:11 PM

#

then they get GCed along with the controller

fading birch Mar 24, 2020, 8:11 PM

#

but one of our guys is a bit insane when it comes to managing memory

winged badger Mar 24, 2020, 8:11 PM

#

on the next pass

fading birch Mar 24, 2020, 8:12 PM

#

mmkay

#

and it shouldn't be a worry at all since it's pending kill as is

#

so while it's still stored in memory

#

it's not actually being used

winged badger Mar 24, 2020, 8:12 PM

#

what i'd definitely not do

fading birch Mar 24, 2020, 8:12 PM

#

it's just chilling

winged badger Mar 24, 2020, 8:13 PM

#

is manually force GC to collect at that stage

#

as the game is still pretty busy constructing the world at that time

#

so, if you want to force get rid of them

#

PreClientTravel override on LobbyController is the place to do it

fading birch Mar 24, 2020, 8:14 PM

#

awesome, that's what i'll do then

#

thanks!

crystal crag Mar 24, 2020, 10:28 PM

#

Ok, so I created a new UE 4.24.3 project using the third person player template. I have done nothing other than put the code to host the session and to join the session. Everything else is literally the default value given by the template. My character still joins, then falls through the map

#

both the server and the client start on the same map

#

I'm going to go insane

#

it should not be this hard

#

📎 RaevinGameInstance.cpp

#

📎 RaevinGameInstance.h

#

For all that is holy, please someone help me. I don't know why all of the sudden I can't get this to work. I am even referencing a project I built in 4.20 and it worked

#

📎 2020-03-24_18-36-31.mkv

ocean geyser Mar 24, 2020, 10:53 PM

#

try modifying the Z axis of your actor on the server when it gets created/possessed?

crystal crag Mar 24, 2020, 11:14 PM

#

Should I need to do that with the standard template though?

#

Just to make sure I'm being clear, I just went to new project, created a C++ TP project based off of the TP template, coded the session logic in the game instance, and fired up the dedicated server / client

#

I've changed nothing else

fading birch Mar 25, 2020, 12:13 AM

#

I am using a dedicated server that seamlessly travels to a map and brings the clients. In the player state I have a replicated variable called username. This is sent to other clients using a NetMulticast function. However, there are times where it won't replicate properly, or send the incorrect values. We've managed to work around this by having a delay before that event is fired, but that's a temp fix for the moment.

Is there a way to basically have the server replicate this at a certain time or rather, in a way that doesn't garble the data?

ocean geyser Mar 25, 2020, 12:27 AM

#

@crystal crag heres what i did to fix my issue of spawning in the ground/falling through the map. i overrode the PostLogin function to use my spawn points. do the same sort of thing but without the extra junk that i did, just increment your players actor up some and possess it in the PostLogin function, or look through GameModeBase to see how they did it and simply modify it from there if you dont want to have your own game mode or override one of the functions in there

void ASurvivalGameMode::PostLogin(APlayerController* NewPlayer)
{
    Super::PostLogin(NewPlayer);
        if (SpawnPoints.Num() == 0)
        SetSpawnPoints();

    if (ATheHousePlayerController * PController = Cast<ATheHousePlayerController>(NewPlayer))
    {
        UE_LOG(LogTemp, Warning, TEXT("CASTED PLAYER CONTROLLER"));

        ALobbySpawnPoint* SpawnPoint = GetValidSpawnPoint();
        if (SpawnPoint)
        {
            FVector Location = SpawnPoint->GetActorLocation();
            Location.Z += 100.0f;//move spawn point up 100 cm
            FRotator Rotation = SpawnPoint->GetActorRotation();
            FActorSpawnParameters SpawnParams;
            SpawnParams.bNoFail = true;
            SpawnParams.SpawnCollisionHandlingOverride = ESpawnActorCollisionHandlingMethod::AlwaysSpawn;

            SpawnPoint->SetUsed(true);
            if (DefaultPawnClass)
            {
                if (APawn * Pawn = GetWorld()->SpawnActor<APawn>(DefaultPawnClass, Location, Rotation, SpawnParams))
                {
                    PController->Possess(Pawn);
                }
            }
        }
    }
}

crystal crag Mar 25, 2020, 1:57 AM

#

@ocean geyser Ok I'll give it a shot. Something still feels broken though. I never had to mess with game mode at the beginning of my other project and it worked right out the gate. Worth a shot though

winged badger Mar 25, 2020, 8:45 AM

#

@fading birch there is a PlayerName(Private), depending on the version, in PlayerStates that the engine replicates for you

fading birch Mar 25, 2020, 8:47 AM

#

@winged badger yeah I'll likely transition to that later. I got it working actually by looking at how that was implemented. Going with a rep notify fixed the issue.

#

We plan on replicating other things so this was more of a flow test run per say

mossy hearth Mar 25, 2020, 11:50 AM

#

I created a custom character movement component and assigned it to the character, but in blueprints when I click on the the new movement component i dont see any variables etc. anybody knows why this could happen?

twin juniper Mar 25, 2020, 12:10 PM

#

Someone has some experience in Amazon Game Lift for dynamic Game Server?

#

i am thinking about it and ill need such a system to start for my Racing Project dynamicly Servers when people wanna race

bronze arch Mar 25, 2020, 2:00 PM

#

Hello everyone, i had a trouble with Multiplayer dedicated server execution, Anyone have idea?

[2020.03.25-00.26.12:435][753]LogNet: NetworkFailure: ConnectionLost, Error: 'UIpNetDriver::TickDispatch: Socket->RecvFrom: 24 (SE_ENETRESET) from ***.***.***.*:63174'
[2020.03.25-00.26.12:437][753]LogNet: UNetConnection::Cleanup: Closing open connection. [UNetConnection] RemoteAddr: ***.***.***.***:63174, Name: IpConnection_114, Driver: GameNetDriver IpNetDriver_0, IsServer: YES, PC: MatchmkaingPlayerController_C_114, Owner: MatchmkaingPlayerController_C_114, UniqueId: Steam:***************
[2020.03.25-00.26.12:442][753]LogNet: UNetConnection::Cleanup: Closing open connection. [UNetConnection] RemoteAddr: **.***.***.***:65320, Name: IpConnection_113, Driver: GameNetDriver IpNetDriver_0, IsServer: YES, PC: MatchmkaingPlayerController_C_113, Owner: MatchmkaingPlayerController_C_113, UniqueId: Steam:***************
[2020.03.25-00.26.12:450][753]LogNet: NotifyAcceptingConnection accepted from: **.***.***.***:65320
[2020.03.25-00.26.12:451][753]LogNet: Invalid ConnectionlessHandler (0) or StatelessConnectComponent (0); can't accept connections.
[2020.03.25-00.26.12:769][763]LogNet: NotifyAcceptingConnection accepted from: ***.***.***.***:63174
[2020.03.25-00.26.12:770][763]LogNet: Invalid ConnectionlessHandler (0) or StatelessConnectComponent (0); can't accept connections.
..
..
.. 
looping..

#

@jolly siren guess you got same trouble in some ago. do you know how did you fix it?

jolly siren Mar 25, 2020, 3:07 PM

#

Where did you see that I ran into this? can you link me to the message?

bronze arch Mar 25, 2020, 3:14 PM

#

at linux channel i guess

📎 unknown.png

hardy flame Mar 25, 2020, 3:15 PM

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Hello Everyone, I'm in need of some help accessing every players save game on a multiplayer project.
I'm making a multiplayer game where every player has a save file with their own name. The name is set at launch if no save game is detected. The issue is I'm trying to implement a scoreboard, where I want to show, among other things, the name the player has set on their own save file and I'm having issues with that where or everyone gets the same name as the server or everyone gets the same name from their own local save game file. I've been at this for days and can't seem to figure out a way to replicate every players name to the scoreboard on everyone's game. It's driving me crazy. Here's what I have so far, have in mind that I've changed things around a lot
this is in the character blueprint

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📎 fetch.png

bronze arch Mar 25, 2020, 3:15 PM

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https://discordapp.com/channels/187217643009212416/375022233875382274/575697135903703054 @jolly siren

hardy flame Mar 25, 2020, 3:15 PM

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this is also in the character blueprint

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📎 fetch.png

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but this is happening, with two separate computers, steam accounts and save games

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📎 fetch.png

jolly siren Mar 25, 2020, 3:16 PM

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ah Socket SendTo. Our errors are a bit different.

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And mine was fairly rare

bronze arch Mar 25, 2020, 3:17 PM

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same for me too. it was first error that i saw on my game till 2-3 year

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so rare as you said

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but isn't same error in same file? you had error in send to, i had error in receive

jolly siren Mar 25, 2020, 3:47 PM

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yeah ours occurred for the 1st game when a new server was first allocated by the load balancer

supple pelican Mar 25, 2020, 7:23 PM

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Hey guys i have a game thats using OSS NULL, and is hosting a session. FindSessions cant seem to find the session being hosted on another PC only if i try to FindSessions on a client that is running on the same pc the dedicated server it is found. Anyone have any idea what im missing? These are the current SessionSettings that we are using

            SessionSettings.bIsLANMatch = bIsLAN;
            SessionSettings.bUsesPresence = bIsPresence;
            SessionSettings.NumPublicConnections = MaxNumPlayers;
            SessionSettings.NumPrivateConnections = 0;
            SessionSettings.bAllowInvites = true;
            SessionSettings.bAllowJoinInProgress = true;
            SessionSettings.bShouldAdvertise = true;
            SessionSettings.bAllowJoinViaPresence = true;
            SessionSettings.bAllowJoinViaPresenceFriendsOnly = false;

shy kelp Mar 25, 2020, 7:48 PM

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very new to the idea of replication. Why doesnt something simple like this work on the client? It only works on the server

📎 tut.PNG

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havent really tried to meddle with multiplayer until now

cobalt whale Mar 25, 2020, 10:02 PM

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someone who can help me with php?

meager spade Mar 25, 2020, 10:53 PM

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sure there is PHP discords somewhere

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this is UE4

cobalt whale Mar 25, 2020, 11:03 PM

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xD

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im just using varest. so i need to do a php script

fossil spoke Mar 25, 2020, 11:05 PM

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@cobalt whale Please use #lounge, PHP is outside the scope of this channel and this Discord Server.

cobalt whale Mar 25, 2020, 11:06 PM

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no problem ^^.

next fable Mar 26, 2020, 12:35 AM

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Very confused about GameState and PlayerArray and behavior in a multiplayer session.
Here I have the Server window looping through GameState PlayerArray in a widget and printing player name and tag. I have a two player session joined. The tag is being populated in the PlayerState by the menu widget displayed.
Why is it printing 2 for the Server and 2 for the Client?
Why is the only one being set a Server one?
I thought PlayerArray is replicated across all clients.
I am basically trying to split the player array and drop in different buckets accoring to the tag.
How do I do this? I've been at this for days :-(

📎 unknown.png

cobalt whale Mar 26, 2020, 2:05 AM

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why my project run as standalone game and doesent have server- client? where i can choose that?

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📎 Immagine.png

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instead of this

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📎 unknown.png

ocean geyser Mar 26, 2020, 2:15 AM

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where you click play click the down arrow and you will see options @cobalt whale

cobalt whale Mar 26, 2020, 2:25 AM

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📎 unknown.png

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nothing change

vestal thistle Mar 26, 2020, 2:47 AM

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hello is anybody familiar with playfab matchmaking here? i was wondering if i set this up correctly

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📎 unknown.png

odd plaza Mar 26, 2020, 6:34 AM

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hello is there any variable to determine actor is replicating and up to date?

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on client side

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📎 unknown.png

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I tried this but it seem only display true

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even I walk away from it

zenith yarrow Mar 26, 2020, 6:51 AM

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Has anybody has any issues with the check((SIZE_T)AckCount <= AckRecord.Count()) in FNetPacketNotify::UpdateInAckSeqAck(), where it crashes on debug game builds ?

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@silent sigil You posted asking for help regarding the NetPacketNotify crash on 08/28/19, were you able to find the reason for it ?

silent sigil Mar 26, 2020, 8:24 AM

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@zenith yarrow I was not, it just went away when I moved to 4.23

zenith yarrow Mar 26, 2020, 8:25 AM

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@silent sigil thanks, was constantly getting these while playing debug game builds, is the check removed in 4.23 ?

silent sigil Mar 26, 2020, 8:26 AM

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I don't know. It was specific to steam and level travel. Lot's of places a code change could have fixed that. I didn't have time to track it down. Trying to ship.

zenith yarrow Mar 26, 2020, 8:26 AM

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so are we, thanks for the help, appreciate it.

silent sigil Mar 26, 2020, 8:27 AM

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np

weary mortar Mar 26, 2020, 8:37 AM

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Hi all, maybe a dumb question... but any hint on how can I get the role of a PlayerPawn/PlayerController from the GameMode(server side)? when I ask for the PlayerController->GetLocalRole() always give me ROLE_Authority as result for everyone of the 4 players... Maybe because it is really taking the copy of the PlayerController in the server side....HEEEEELP 😄

zenith yarrow Mar 26, 2020, 8:41 AM

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@weary mortar GetRemoteRole() in aactor ?

weary mortar Mar 26, 2020, 8:44 AM

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I'm in a ListenServer, it always give me that it is a Client 😦

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even for the Player in the Server

zenith yarrow Mar 26, 2020, 8:46 AM

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@silent sigil can you please tell me if you switch the engine first and then make changes or did you make the code changes first and then switched the engine ?

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@weary mortar not sure you'll have to check, but, if you set a owner for the actor/pawn when spawning, to the pc of the player. You can also set the owner later i suppose, The remote role then should show up correctly for the pawn on the server.

weary mortar Mar 26, 2020, 9:01 AM

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ummmm I'll try something in that way @zenith yarrow thanks!

unique kelp Mar 26, 2020, 9:03 AM

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is this something i should be concerned about?

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how does this even happen?

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it's obviously not really Xs and Ys

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but the numbers are different

twin juniper Mar 26, 2020, 10:12 AM

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@shy kelp Apply damage is executed on server, the small desktop icon in the top right of the node indicates its authority only

chrome bay Mar 26, 2020, 10:27 AM

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@weary mortar The role of the objects on the Server is ROLE_Authority, so that's the correct behaviour.

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Player pawns and player controllers are spawned by the server and replicated to clients, therefore the server has authority over them.

bitter oriole Mar 26, 2020, 10:28 AM

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You want the remote role instead

weary mortar Mar 26, 2020, 10:28 AM

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@hollow nexus I have suspected that... 😦 but, How could I do to identify the pawn of the Server and the pawn of the Clients from the server?

chrome bay Mar 26, 2020, 10:28 AM

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IsLocallyControlled()

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Or IsLocalController() for controllers.

weary mortar Mar 26, 2020, 10:30 AM

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IsLocallyControlled()!!!! DAMN IT!!! I've didn't tried that in this case!!!

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@chrome bay ams I think u hitted the nail... let my try it !!

chrome bay Mar 26, 2020, 10:31 AM

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It'll return true on the Server for both the listen server player and also any AI controllers

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But false for any clients

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And on clients it'll only be true for the pawn they are possessing.

weary mortar Mar 26, 2020, 10:33 AM

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@bitter oriole thanks mate!, I've already tried that... but in any case, even in server, always returns ROLE_AutonomousProxy... in other words... Client 😦

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@chrome bay really enlighted my issue!! I use IsLocallyControlled() many times, but in this case I absolutelly forgot about it... 😄

chrome bay Mar 26, 2020, 10:34 AM

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Yeah it's a pretty common func to use 🙂

weary mortar Mar 26, 2020, 10:36 AM

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for sure!! 😄

zenith yarrow Mar 26, 2020, 12:51 PM

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@silent sigil Thanks for the help erebus, got only the changes from this commit -> https://github.com/EpicGames/UnrealEngine/commit/1bb3d8fcb19aa44808a9a23d82c60d7c05564a38 , and the issue is solved for me.

visual surge Mar 26, 2020, 12:54 PM

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Hi everybody, I have a question regarding Net Load On Client for replicated actors. In our game we have lots of actors that use this function (small decals) and when a player joins a match you can see each decal actor spawning one by one. I have a loading screen in place but OnPostLoadMap is called before all these actors are spawned. In the meantime the player can't move at all. Is there maybe a callback that will be fired when all net load actors are loaded?

cobalt whale Mar 26, 2020, 1:00 PM

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anybody know how to fix that? my game run only with stantalone , doesnt have any server / client

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📎 Immagine.png

chrome bay Mar 26, 2020, 1:06 PM

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I mean, you have actually made the game multiplayer right?

cobalt whale Mar 26, 2020, 1:06 PM

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yes

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i maybe changes some settings

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changed*

chrome bay Mar 26, 2020, 1:07 PM

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I don't know what "Active Play Mode" is but you should just select how many clients to create, select whether to use a dedicated server or not and hit play. That's all there is to it

cobalt whale Mar 26, 2020, 1:08 PM

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is windows pie. with 2 clients. without dedicated server

chrome bay Mar 26, 2020, 1:08 PM

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yeah should work fine then

cobalt whale Mar 26, 2020, 1:09 PM

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it doesent

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for some reason both 2 are server

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or client /server mixed togheder

chrome bay Mar 26, 2020, 1:10 PM

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My guess is the dedicated server doesn't launch properly so the clients end up as standalone

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Try without dedicated server

cobalt whale Mar 26, 2020, 1:10 PM

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is without

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even if is with

chrome bay Mar 26, 2020, 1:11 PM

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Have you changed something in the Advanced Settings?

cobalt whale Mar 26, 2020, 1:11 PM

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maybe. and i dont remember what

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is something related on gamemode?

chrome bay Mar 26, 2020, 1:23 PM

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don't think so

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I would check the logs

cobalt whale Mar 26, 2020, 1:24 PM

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what i have to do?

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you know what

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i start from 0

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i cant find any solution

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hours of work wasted

unborn cobalt Mar 26, 2020, 1:58 PM

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Is it possible to render preloaded level before and during travel (connection to server) in a way that player will not notice any background connection happening?

molten topaz Mar 26, 2020, 2:05 PM

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hey guys, new to unreal here, my question is: Is it hard to make a game with over 4 players online? Meaning, Can I make an 8 player or 16 player game? Or would it just be really laggy, i don't know anything about multiplayer as I am new to game dev, but have experience in coding

cobalt whale Mar 26, 2020, 2:13 PM

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you can do a game with infinite ammount of player.

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depending on the machine your are hosting your game

winged badger Mar 26, 2020, 2:25 PM

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you actually can't

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battle royales have huge teams doing tons of optimization to run a 100

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and machine hosting your game is either whatever dedicated server you leased, or average low end gaming PC

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@molten topaz if you don't know anything about multiplayer, i'd keep it down to 4-8 if i were you

molten topaz Mar 26, 2020, 2:27 PM

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i would love doing an 8 player co-op game but i gotta learn the engine so maybe next year

winged badger Mar 26, 2020, 2:28 PM

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not that AI characters running around take about as much resources as a player

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we have even a high end gaming PC struggle as a listen server with 200 AI running around, and that is after several optimization passes

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if you don't know much about AI either, i'd keep it down to 4 players for start, that can be scaled up at a later time

celest geyser Mar 26, 2020, 2:35 PM

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Got a question, what's the best way to 'tag' an actor as belonging to a certain player in either a Local- or Online Multiplayer scenario? Setting a variable on the actor that holds a reference to the owning actor? Or is there some native functionality for that?
(also applies to actors placed in the level, not spawned through code, since there you can specify an owner as far as I can see)

winged badger Mar 26, 2020, 2:38 PM

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SetOwner

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if called on server, it will also allow the owner to send and receive RPCs through that actor

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and you should definitely call it on server

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OwnerPrivate is replicated out of the box

celest geyser Mar 26, 2020, 2:43 PM

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Ok, is that also a good approach for local multiplayer, couch-coop style?

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Since I have multiple Player Controllers anyways, I just set that as the owner locally as well?

cobalt whale Mar 26, 2020, 3:02 PM

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how i have to replicate that?. that action need to be performed by the server and is required from a specific client

narrow prairie Mar 26, 2020, 5:20 PM

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@winged badger how did u manage to get 200 ai running around? what performance steps did u take?

meager spade Mar 26, 2020, 5:27 PM

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lots

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we had to optimize, cmc calls, use NavWalking not Walking, reduce the number of scene components on the AI, use behaviour trees properly, (avoid the amount of MoveTo calls), etc

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then there is other little tweaks to settings on the CMC

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its not perfect, and we are still optimizing it even more @narrow prairie

narrow prairie Mar 26, 2020, 5:31 PM

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is that cmc c++?

meager spade Mar 26, 2020, 5:32 PM

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ofc

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we had to do a lot of stuff

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override stuff in the CMC (we have our own MonsterMovementComponent

narrow prairie Mar 26, 2020, 5:33 PM

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im rlly hitting limits allrdy with 10 ai running around, almost unplayable in multiplayer.

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sadly i cannot code c++ yet to optimize these things

meager spade Mar 26, 2020, 5:33 PM

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10 ai should be easy

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without c++ stuff

narrow prairie Mar 26, 2020, 5:34 PM

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i dont know how much more load it has when i has to render 2 clients

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might also be that issue

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gonna go check emediatly

tardy orchid Mar 26, 2020, 5:40 PM

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Hey everyone, does anyone know why my player state doesn't get carried over when I load a map? Doesn't work for both SP and MP. All I have created for the player state is a NickName string variable and when I load to a map it becomes the default value

meager spade Mar 26, 2020, 5:41 PM

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its not automatic

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you have to manually copy over what you need

tardy orchid Mar 26, 2020, 5:42 PM

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what u mean?

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I thought it just doesn't get deleted at all

meager spade Mar 26, 2020, 5:43 PM

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who said that?

tardy orchid Mar 26, 2020, 5:43 PM

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umm

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I've read somewhere that it gets carried over

meager spade Mar 26, 2020, 5:43 PM

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no

tardy orchid Mar 26, 2020, 5:43 PM

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oh

meager spade Mar 26, 2020, 5:43 PM

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when loading a new map

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it gets recreated

tardy orchid Mar 26, 2020, 5:43 PM

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oh

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so what's the best way to carry over player state variables like level and Nickname

meager spade Mar 26, 2020, 5:43 PM

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override copy properties

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and copy it

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https://www.thegames.dev/snaps/UE4Editor_0CLCwWVDln.png

tardy orchid Mar 26, 2020, 5:51 PM

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can u explain quickly how to do this or link a tutorial?:P

meager spade Mar 26, 2020, 5:51 PM

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its simple?

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NewPlayerState is your new player state

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you copy over

silent sigil Mar 26, 2020, 5:51 PM

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@zenith yarrow ty.

meager spade Mar 26, 2020, 5:53 PM

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@tardy orchid https://www.thegames.dev/snaps/UE4Editor_8cI6FKnc7I.png

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:shrug@

half jewel Mar 26, 2020, 5:55 PM

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@meager spade before you reduced the amount of scene components on ai, did you check to see if use parent bounds checkbox helped with performance?

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i never thought removing components could help performance, maybe moving these particle/sound components to runtime spawns is faster?

meager spade Mar 26, 2020, 5:58 PM

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i have that ticked aswell

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all scene components still need to update there transform

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thats what the bottle neck was

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we were hitting 2ms updating child transforms on scene components

tardy orchid Mar 26, 2020, 5:59 PM

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@meager spade still doesn't work, what am I missing

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and also when does this event get called

meager spade Mar 26, 2020, 5:59 PM

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when new player state is created, before old one is destroyed

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when you open a new world

tardy orchid Mar 26, 2020, 5:59 PM

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oh

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so it should work

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📎 Untitled.png

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it's identical, why not working tho

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Yeah, it still becomes default when I log into multiplayer

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I tried with multiple clients and when I get all the player states it shows them all named as default, so it doesn't get carried over for some reason

meager spade Mar 26, 2020, 6:08 PM

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might be a option in the controller somewhere

rotund whale Mar 26, 2020, 6:55 PM

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is sending a map object over an RPC allowed?

📎 Screenshot_2020-03-26_18.41.28.png

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I tried googling the answer but no results about this came up

bitter oriole Mar 26, 2020, 7:20 PM

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IIRC, no, it isn't supported

fleet raven Mar 26, 2020, 7:25 PM

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you could just try if it works

lunar root Mar 26, 2020, 7:27 PM

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Is there a way to replicate the movement more precise?

bitter oriole Mar 26, 2020, 7:28 PM

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Loaded question right there, multiplayer movement is an entire field of employment

lunar root Mar 26, 2020, 7:28 PM

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I've set a GlobalTimeDilation to 0.2 right now because I wanted to make an SlowMo effect, the thing is, when a player rotates it doesnt look smooth, it looks more like steps

bitter oriole Mar 26, 2020, 7:29 PM

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Is the time dilation replicated on server and clients ?

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Is this using Character ?

lunar root Mar 26, 2020, 7:30 PM

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It's on the server only right now

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And yeah talking about Character

bitter oriole Mar 26, 2020, 7:32 PM

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So, obviously you need to replicate time dilation everywhere first

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I wouldn't have been surprised if global time dilation was replicated out of the box tbh

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Not much sense doing it only on server, since it's going to drastically affect gameplay

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Basically the most common problem with multiplayer movement is if the simulation doesn't happen 100% exactly the same everywhere

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It's never 100%, but Character or any other implementation will correct all the time

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It's impossible to do so if the game is behaving differently

lunar root Mar 26, 2020, 7:34 PM

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Okay, wait let me replicate it very quick

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thought the server does this out of the box

bitter oriole Mar 26, 2020, 7:36 PM

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Maybe it does, no idea

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But check first that time is correctly dilated everywhere

lunar root Mar 26, 2020, 7:42 PM

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So two thing: No its not replicated by default

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Second: If i set it on both sides its even worse since it looks like the replciation speed is also in SlowMo mode then

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which results in even more "Stepping" issues

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Whatever, thanks for helping, i do this someday later was just a bit messing around

bitter oriole Mar 26, 2020, 7:46 PM

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Well yeah, that makes sense

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IIRC you can dilate other than with global time, though

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There is a per-object one

lunar root Mar 26, 2020, 7:49 PM

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Yeah, the main idea was to make something like in Overwatch

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Idk if you have ever played Overwatch but when the Game ends everything goes into slowmotion and it say Victory

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well or defeat but u get the point

bitter oriole Mar 26, 2020, 7:50 PM

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Yeah definitely

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I would expect the character class to support custom actor dilation

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If it doesn't, it's going to be harder

lunar root Mar 26, 2020, 7:53 PM

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Another issue, Stranger are you familiar with C++ & Multiplayer? or u use mainly blueprints

bitter oriole Mar 26, 2020, 7:54 PM

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Mainly C++ really

lunar root Mar 26, 2020, 7:54 PM

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Ok, so you can help me here maybe

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So Basically in the GameMode I call the function EndGame in every PlayerController (its a custom function for sure)

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Its marked with UPROPERTY(Client, Reliable)

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And the function is basically empty, its just defined right now

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so when i play in editor, uncheck dedicated server and play with 2 players, as soon the function is called my engine crashes (access violation error)

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however when the ded. server is running it works just fine

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any ideas?

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And VS only opens the generated (.gen) file when throwing this error

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idk what to do lol

bitter oriole Mar 26, 2020, 7:57 PM

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Well, access violation is something you debug in VS

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Close the editor, compile, start debugging and play in editor

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There likely is a null pointer somewhere

lunar root Mar 26, 2020, 7:59 PM

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📎 unknown.png

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How am I supposed to debug this lol..

bitter oriole Mar 26, 2020, 7:59 PM

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The call stack should help.

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If you're not familiar with debugging C++ code, you'll have to learn real fast

lunar root Mar 26, 2020, 8:00 PM

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Yeah new to this kind of stuff, VS is still 'new' to me

bitter oriole Mar 26, 2020, 8:00 PM

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Call stack is the main tool for debugging, it's one of the windows avaialble while in debugger mode. basically the stack of where the code is

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Usually your own code is somewhere inside the stack, so you can double click that and find out the parameters

lunar root Mar 26, 2020, 8:01 PM

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kk well i know this form java

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from *

fading birch Mar 26, 2020, 8:01 PM

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I use the call stack most often to check values, you can also step back through the function calls to find where it went wrong.

lunar root Mar 26, 2020, 8:02 PM

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So Basically my PlayerController is undefined

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You don't know

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how much time i could have saved if i knew sooner about the call stack

fading birch Mar 26, 2020, 8:03 PM

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well think about it this way

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now that you do know

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you'll save more time in the future

lunar root Mar 26, 2020, 8:03 PM

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^^

fading birch Mar 26, 2020, 8:03 PM

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wait until you figure out how to attach debuggers to a standalone UE4 window

lunar root Mar 26, 2020, 8:05 PM

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😮

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`void ATFGameModeBase::EndGame(UTFTeam* Winner)
{

for(ATFPlayerControllerBase* Player : GetPlayers())
{
    Player->GameEnded(Winner);
}

}

TArray<ATFPlayerControllerBase*> ATFGameModeBase::GetPlayers()
{
TArray<ATFPlayerControllerBase*> Players;

for (FConstPlayerControllerIterator Iterator = GetWorld()->GetPlayerControllerIterator(); Iterator; ++Iterator)
{
    if (APlayerController* PC = Iterator->Get())
    {
        auto const TFPC = Cast<ATFPlayerControllerBase>(PC);
        if(TFPC)
            Players.Add(TFPC);
    }
}

return Players;

}`

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In the EndGame

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So Basically "Player is undefined" happens in the EndGame for-loop

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but how can there be an undefined Player if I check for it before I add it onto the Players array?

rotund whale Mar 26, 2020, 8:13 PM

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ok networking maps does not work

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even though you can set it as blueprint pins

bitter oriole Mar 26, 2020, 8:19 PM

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The reason you can set them is that TMap is supported for Blueprint

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You can use them in singleplayer

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They do not replicate however

terse prawn Mar 26, 2020, 11:13 PM

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Both these variables are set to RepNotify and when the event is executed, it wont replicate across the server & clients

📎 Needs_to_update_on_all_Clients.png

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how can I get this to update across all clients & server?

meager spade Mar 26, 2020, 11:16 PM

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set it on the server?

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clients cant replicate properties

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so if that is done on the client, it will never replicate

terse prawn Mar 26, 2020, 11:17 PM

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would I use a run on server leading to a multicast?

meager spade Mar 26, 2020, 11:20 PM

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no multicast

terse prawn Mar 26, 2020, 11:20 PM

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so if remote then use custom event to "run on server" replication?

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Like this?

📎 New.png

timid moss Mar 27, 2020, 12:32 AM

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Does anyone know a really good cheap database service I could use for storing game data?

supple pelican Mar 27, 2020, 2:06 AM

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I’m trying to findsession on my lan with OSS Null and my other PC (PC not hosting the server) can’t find it. PC hosting the dedicated server and running a client can find the session. My firewall is off on both PCs. Anyone have any ideas how to debug this

cunning shoal Mar 27, 2020, 2:31 AM

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hey guys, has anyone experienced issues moving to 4.24.3? i was on 4.23 and now when launching multiplayer PIE (2 players) the 2nd player gets pulled back after walking forward for a bit, almost as if there was massive packet delay, even though there's not.... my ammo system also stopped showing up correctly for the 2nd client

fading birch Mar 27, 2020, 3:10 AM

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@timid moss what kind of data?

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@cunning shoal something sounds awry there. I didnt experience any issues like that when we moved. Did you go through the change lists for those versions to see if something broke your code?

cunning shoal Mar 27, 2020, 3:12 AM

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@fading birch i also just noticed that to the server, the client is walking as if they have extreme packet loss (very choppy) - this never happened before. I will have to double check the change list again for that

fading birch Mar 27, 2020, 3:12 AM

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That shouldn't happen in pie at all.

cunning shoal Mar 27, 2020, 3:16 AM

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I agree.... you know what, I'm actually missing images on my lobby menu too, starting think the conversion corrupted

meager spade Mar 27, 2020, 3:16 AM

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it can happen

timid moss Mar 27, 2020, 3:16 AM

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@fading birch you know. User stats. Abilities. Maybe even a profile picture. I know pictures can take up a lot of data so idk bout that yet

meager spade Mar 27, 2020, 3:16 AM

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i have monsters that just wander off screen on pie

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when focus is lostr

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but its visual

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and only when focus is lost

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and yeah happened since 4.24 never happened in 4.22 @cunning shoal

#

so you are not a lone

fading birch Mar 27, 2020, 3:17 AM

#

@timid moss well my project uses a restful API I custom built and I just host it on Digital Ocean. As far as out of the box solutions? I didnt see any cheap ones when I was looking before I just decided to make it myself.

cunning shoal Mar 27, 2020, 3:19 AM

#

@meager spade do you mean you had the same issues? or that your issue started on 4.24?

meager spade Mar 27, 2020, 3:34 AM

#

started on 4.24

#

its just PIE

#

doesnt happen in standalone

cunning shoal Mar 27, 2020, 3:57 AM

#

yeah, I was on 4.23 with no issues coming from 4.22

#

looks like there were major updates for the Steam API

#

but PIE doesnt use that AFAIK

fading birch Mar 27, 2020, 4:24 AM

#

It does not no

cunning shoal Mar 27, 2020, 4:29 AM

#

Ok so I did a fresh conversion of 4.23.1 to 4.24.3 and confirming it does still have the same issues (all my player/character, and map images are white even when changing maps), and the teleport/jump back and client visual lag is still there. I think there's issues with this new version, I'm not doing anything special for the walking movements

fading birch Mar 27, 2020, 4:30 AM

#

does the issue persist with 4.24?

cunning shoal Mar 27, 2020, 4:31 AM

#

you mean 4.24.0? I'll have to see if i can install that one

fading birch Mar 27, 2020, 4:32 AM

#

4.24.2 atm

#

might as well grab the hotfixes

#

is this a big project?

#

as in important things?

#

either way, i'd make a copy of it and switch engine version there

#

due to map version issues.

cunning shoal Mar 27, 2020, 4:34 AM

#

its getting larger, have spent about 6 months on it

#

so doesnt look like i can choose 4.24.2 to install - 4.25.0 preview, and 4.21.2 are all im given around that range

fading birch Mar 27, 2020, 4:35 AM

#

oO

#

do you alread have it installed?

cunning shoal Mar 27, 2020, 4:36 AM

#

nope

fading birch Mar 27, 2020, 4:36 AM

#

that's very strange

cunning shoal Mar 27, 2020, 4:36 AM

#

I have 4.22.3, 4.23.1, and 4.24.3

fading birch Mar 27, 2020, 4:36 AM

#

oh

#

it's 4.24.3 now

#

i haven't updated from 4.24.1 yet

#

none of the changes effected my project

tardy orchid Mar 27, 2020, 9:36 AM

#

@meager spade can you point to a tutorial or documentation on how to use the EVENT copyproperties? I can't find any documentation

#

and I can't get it to work

plush wave Mar 27, 2020, 9:57 AM

#

So variables are are always "ensured" to reach the client. If that's the case, why are ensured RPC calls not recommended?

glad wharf Mar 27, 2020, 10:29 AM

#

If I spawn a staticmeshactor on server and just after set it to replicates, is it normal that it does not spawn on client? The flag must be set in the CDO ?

#

@tardy orchid I remember seeing something related in the Network Compendium

#

Slide 28 & 29

tardy orchid Mar 27, 2020, 10:29 AM

#

@meager spade can you point to a tutorial or documentation on how to use the EVENT copyproperties? I can't find any documentation
@tardy orchid I got it working with slot saving but if you know why event copy properties doesn't work let me know

#

@tardy orchid I remember seeing something related in the Network Compendium
@glad wharf thanks, I'll check it out

glad wharf Mar 27, 2020, 10:30 AM

#

( http://cedric-neukirchen.net/Downloads/Compendium/UE4_Network_Compendium_by_Cedric_eXi_Neukirchen.pdf )

#

I'm having an actor owned by a player pawn spawning an actor on the server, but the actor spawned on the server is not spawned on the client, any idea why? The Actor spawned is set to replicates, it's just a dummy child of StaticMeshActor with "Replicates" ticked

#

(you can think of a weapon actor owned by the pawn spawning a projectile)

frigid bluff Mar 27, 2020, 10:48 AM

#

if I place a actor into the world at design time, is that actor owned by the server or does it have no owner? I need to be able to make server auth calls on that actor but if it doesn't have a owner I can't do that.

bitter oriole Mar 27, 2020, 10:48 AM

#

Level actors have no owner

#

You have to set the owner from the server to allow a remote player to interact

frigid bluff Mar 27, 2020, 10:51 AM

#

so my best bet would be to just spawn them from the gamemode while the server is bringing the world up? Or should I just call SetOwner() after they've been spawned? IIRC, a actor that has no owner can't use the SetOwner() function

bitter oriole Mar 27, 2020, 11:03 AM

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@frigid bluff There is no need to spawn them in a particular way

#

Just call SetOwner with the target player, on the server before that player has to interact

#

Of course, if another player needs to, you'll have to do SetOwner again, etc

#

If this is the kind of object multiple players might interact with, you'll need to move the RPC to player controller or pawn instead

glad wharf Mar 27, 2020, 11:20 AM

#

Do you know if Dedicated server in editor works with spawning? I have strange error message saying that my actor has no owning connection, therefore a Server RPC cannot be executed, but the RPC seems executed anyway (and the actor has the pawn as owner, so should have owning connection). However, spawning on the server from this actor does not replicate on client

frigid bluff Mar 27, 2020, 11:35 AM

#

thanks mate @bitter oriole

twin juniper Mar 27, 2020, 12:58 PM

#

Hey can someone point me to a tutorial on multiplayer nameplates using widgets, I have this simple set up though it doesn't work, the nameplate is only visible to the owner

📎 help1.png

#

📎 help2.png

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📎 help3.png

glad wharf Mar 27, 2020, 1:01 PM

#

In your PlayerState set your Nickname variable as RepNotify, and on notify get the pawn related to this player state and setup it's nameplate. It should work

#

(APlayerState already has a PlayerName variable but I don't think you can register to its repnotify Edit: PlayerName is deprecated)

#

actually you can override OnRep_PlayerName in APlayerState, it's virtual

#

and set it through SetPlayerName(...)

twin juniper Mar 27, 2020, 1:05 PM

#

but the player state's nickname only changes when I'm renaming the player

#

so it won't get triggered when I'm spawning for example

glad wharf Mar 27, 2020, 1:05 PM

#

Yes it should be. When your Player is spawned on the server, it will initialize the variables, PlayerName included

#

how does your player get its name the first time, when it is spawned?

twin juniper Mar 27, 2020, 1:08 PM

#

I set the player state's name when the player controller logs in

glad wharf Mar 27, 2020, 1:09 PM

#

using SetPlayerName on PlayerState?

twin juniper Mar 27, 2020, 1:10 PM

#

yes

#

the player state's nickname only changes when the controller logs into the server

#

and at that time no characters are spawned

glad wharf Mar 27, 2020, 1:16 PM

#

I would then grab it on BeginPlay on the spawned pawn in addition to the repnotify

plush wave Mar 27, 2020, 1:17 PM

#

Actor attachment is replicated, yes?

bitter oriole Mar 27, 2020, 1:17 PM

#

IIRC yes

twin juniper Mar 27, 2020, 1:19 PM

#

I would then grab it on BeginPlay on the spawned pawn in addition to the repnotify
@glad wharf so that's basically what I'm doing already in the top photo, I'm setting up the nameplate on EVENT possesed

glad wharf Mar 27, 2020, 1:20 PM

#

that's not exactly the same, you're firing a multicast from the server. If the pawn is not "replicatedly spawned" yet on other clients it won't work, but I may be wrong

#

I may be wrong but if I remember correctly, when the client receives the pawn, it already has its playercontroller/playerstate, so you can access its playerstart on begin play

#

(I mean, the autonomous will have its player controller, and the simulated only its playerstate)

twin juniper Mar 27, 2020, 1:23 PM

#

well I mean

#

i'm confused a bit

#

but with the event possessed in multiplayer I can see my own nameplate but not others

glad wharf Mar 27, 2020, 1:25 PM

#

here "I" is a listen server or a client?

twin juniper Mar 27, 2020, 1:25 PM

#

client

#

it's a dedicated server

glad wharf Mar 27, 2020, 1:25 PM

#

basic test but if you put a default text in the nameplate, can you see it? Just to check that everything is ok with your UI setup

#

I mean, can you see it from other clients

twin juniper Mar 27, 2020, 1:26 PM

#

the default text isn't visible

#

what I see is empty at all

glad wharf Mar 27, 2020, 1:26 PM

#

did you check only owner see?

#

it sounds like an "Only owner see" situation

twin juniper Mar 27, 2020, 1:27 PM

#

no

#

didn't check it

glad wharf Mar 27, 2020, 1:27 PM

#

In PlayerInfo?

twin juniper Mar 27, 2020, 1:28 PM

#

yes

#

wait I'll try smthg

glad wharf Mar 27, 2020, 1:28 PM

#

Could be a race condition between your RPC and the replication of your playerstate's nickname variable. When the RPC is fired for other clients, their playerstate is still not replicated yet.

twin juniper Mar 27, 2020, 1:30 PM

#

oh damn it works

#

instead of calling the multicast on POSSESSED I called it on begin play

#

I'm pretty sure you said smthg like that so sorry for not understanding:D

#

thanks anyway

glad wharf Mar 27, 2020, 1:31 PM

#

np, I'm not sure myself that it will solve your problem 100% of the time

#

I suspect that to be 100% reliable, you would need to check in BeginPlay that its PlayerState actually received the PlayerName (using a flag in OnRep_NickName for instance), and if not, set a flag so that when OnRep_NickName is called, it will update the UI. Something like that.

#

so whichever is replicated first it will still work. Seems a bit ugly and there is surely a cleaner way but can't find it now :/

twin juniper Mar 27, 2020, 1:46 PM

#

ok it doesn't fully work in an interesting way:D

#

📎 Untitled4.png

#

Rob connected first and his perspective is in the photo on left

#

ehh this is becoming more confusing

glad wharf Mar 27, 2020, 1:49 PM

#

oh but you cannot send the PlayerController over the network to a client not owning the pawn

#

did not see you're doing that

#

the PlayerController only exists on the server and the owning client

twin juniper Mar 27, 2020, 1:50 PM

#

ik, but how should I solve this

glad wharf Mar 27, 2020, 1:50 PM

#

see my last message before your screenshots

#

I guess you could send the PlayerName instead in the Multicast, even if it's kind of strange as it's bypassing the PlayerState role completely

twin juniper Mar 27, 2020, 1:52 PM

#

way ahead of you

#

let's see if it works

rain coral Mar 27, 2020, 1:52 PM

#

I've been following this tut, and learned how to extend the FSavedMove struct to make the CharacterMovementComponent work with custom things that should be predicted. https://wiki.unrealengine.com/Authoritative_Networked_Character_Movement

Does anyone know if there is a similar approach for the ReplicatedMovement struct? Like, is it a good idea to put additional info from Server->Client in an extended version of the FRepMovement struct? So that all movement related properties are replicated in one go. If that is even possible.

Authoritative Networked Character Movement

twin juniper Mar 27, 2020, 1:53 PM

#

yup it works, thanks again:DD

glad wharf Mar 27, 2020, 1:53 PM

#

np, glad to help. Still, there should be a way to only use the PlayerState mechanism 🤔

livid holly Mar 27, 2020, 2:19 PM

#

how do you properly close a session after a match begins?

#

I'm having an issue, when a match begin the session is still being registered when doing FindSessions

#

and how do you properly destroy them? I'm just calling DestroySession on the server side, but the sessions are still appearing for FindSessions even after I leave the match

muted perch Mar 27, 2020, 2:37 PM

#

how do you make servers and have players connect to them from other internet connections. I know you have to portfoward, but as far as that goes i've failed to get other people connect to my game. I have a fully fledged template for a multiplayer game with a join and host server, but I can't get other people to connect to my game. How would I go about this?

eternal anchor Mar 27, 2020, 3:35 PM

#

does anyone know if FGuid replicates ?

#

ok it replicates

glad wharf Mar 27, 2020, 4:39 PM

#

I'm having a hard time figurring out why a Spawned actor on server does not spawn on client... Has anyone an idea?
The setup is as follow: a controlled pawn owns a weapon. This weapon actor spawns another actor named Projectile (with replicates set to true). But Projectiles does not spawn on client.
I checked and the spawning occurs on server, code is called, the spawned Projectile is valid etc. Looking at it for hours now tried a lot of stuff but in the end nothing really works

#

if the pawn spawns the projectile, it works though

#

so if the pawn owns the weapon, the weapon should have a valid owning connection and the spawning should be replicated 🤔

#

Okay, the weapon was placed in the map and so it needed to be set to "always relevant" to properly replicate. (found this awesome wiki article: https://wiki.beyondunreal.com/Everything_you_ever_wanted_to_know_about_replication_(but_were_afraid_to_ask))

weary cave Mar 27, 2020, 5:11 PM

#

@muted perch https://aws.amazon.com/gamelift/

Amazon Web Services, Inc.

Amazon GameLift - Dedicated Game Server Hosting - Amazon Web Services

Dedication makes all the difference. Get best in-class dedicated game server hosting with Amazon GameLift.

muted perch Mar 27, 2020, 5:23 PM

#

Thanks fam

slate veldt Mar 27, 2020, 5:40 PM

#

Dealing with a weird bug - my game locomotion is fine and works 98% of the time, but sometimes It'll become really jittery and will only work if I turn on Stat Net as soon as I disable Stat Net again the movement is jittery

As I said my game's movement mechanics are totally fine 98% of the time, but I've now stumbled into this weird engine issue 2 or 3 times over the past 2 weeks

4.24 for context

hoary lark Mar 27, 2020, 6:04 PM

#

net saturation, when it's jittering try setting your max FPS to something like 60 and see if it goes smooth again. you can increase the bandwidth limits, set a framerate cap, or try finding and playing with the setting that limits net update rate (I can't remember what it's called but it's new in 4.22 or 4.23 IIRC) @slate veldt

#

try to contrive a special level or scenario where every game instance or test machine can run at a really high framerate to verify the problem (you can also look for Saturation in stat net but it won't help if having stat net open reduces the framerate enough that it no longer occurs lol)

slate veldt Mar 27, 2020, 6:09 PM

#

Fair, I think the FPS is only at about 18 (I've got host + 3 clients open in a high fidelity project) but wonder if the CPU/replication cycles are going faster than the GPU... I'll have a check

EDIT: That's a lie, was 18 ms haha

#

You're correct, was saturation, set it down to 30 and it fixed it up

#

Right... Time to find all the unnecessary vars (fixing this project up from a previous dev - initially there was 300 rep vars on the player char alone 😢 )

Been optimizing but clearly not enough still

#

I should have just done it from scratch 😂

hoary lark Mar 27, 2020, 6:16 PM

#

alright. this is kind of like a 50% diagnosis, you can also use the network profiler to watch the outgoing bandwidth to help confirm. if it is saturated it should be quite evident, the bandwidth graph would appear "capped". 300 rep vars is ... a lot, but i would also recommend seeking the solutions I mentioned, mostly the first and third ones (obviously nobody wants to limit actual rendering framerate)

slate veldt Mar 27, 2020, 6:17 PM

#

I think I've chopped down half the vars already (like literally, they'd set default vars to replicate when they never change!)

#

Been stripping out almost the entire project bit by bit

hoary lark Mar 27, 2020, 6:17 PM

#

at least as of 4.21 the default bandwidth for a project is barely more than a 56k modem... some of the defaults for UE are truly from a past age

slate veldt Mar 27, 2020, 6:18 PM

#

Oh really? I swore the bandwidth was something like MB per second?

I remember reading like 10MB per second, but that sounds like it might have been the upper end of recommended before you have an issue

#

I'll check defaults and also what I'm on by average - thanks for giving me a hint to the issue though, I have no idea how many vars are still replicating but I'm slowly finding more hahaha

hoary lark Mar 27, 2020, 6:19 PM

#

there's no way it's set to 10 MB/s... it might be set to 10 KB/s 😄

slate veldt Mar 27, 2020, 6:21 PM

#

Yeah might have been that - It's been a while since I've had to look at this because normally when I'm working on Network stuff it's well optimized from the beginning

#

I'll try and sort this nightmare out so that I don't have to deal with it next week lmao

#

Oh Geez, just found 20 montage variables that are replicating 😬 Whhyyyyyyy

#

Lmao Oh my goodness

I just found there were some collapsed variable groups - found about another 80 variables that were replicating for no reason (I've actually removed half of them from existence too as I've overhauled their logic)

Where's blueprints from hell when you need it

rich ridge Mar 27, 2020, 7:15 PM

#

Need some words on my level design which is eventually be related to multiplayer

#

I have a level with some good amount of assets with high res textures and materials.

#

and I m thinking of having same level with low res textures and mobile optimized materials.

#

Will my dedicated server recognise these two different levels as one

#

I want to load something like PlayMap -> On PC/Consoles

#

PlayMapMobile -> On Android/iOS

#

And these two different levels have same layout.

#

Has anyone done anything like this

meager spade Mar 27, 2020, 7:32 PM

#

why change the level?

#

why not optimize the level based on the device?

#

that's the idea, do you really think games produce 2 different maps, exactly the same, with different textures?

rich ridge Mar 27, 2020, 7:36 PM

#

I have two different set of materials.

meager spade Mar 27, 2020, 7:36 PM

#

and?

rich ridge Mar 27, 2020, 7:37 PM

#

one for mobiles and PC

meager spade Mar 27, 2020, 7:37 PM

#

there has to be a way to do that

rich ridge Mar 27, 2020, 7:37 PM

#

I can use the actor and based on device type I can set the materials. But its not neat

#

The only neat way I can think of is to use two maps to abstract mobile stuffs from PC\Consoles

meager spade Mar 27, 2020, 7:45 PM

#

but then you have 2 maps to maintain

#

and if they are the same, its bad design

rich ridge Mar 27, 2020, 7:49 PM

#

so what choice do I have?

#

and this is not my primary concern.

#

Sometimes ago @meager horizon commented that dedicated server doesn't connect if the maps are not of exact version on clients.

#

this is my main concern

meager spade Mar 27, 2020, 7:50 PM

#

ofc it wont

#

well

#

"it can"

#

we had server run a different map

#

but it was the same name

#

just a old version where clients had new version 😄

rich ridge Mar 27, 2020, 7:51 PM

#

Ok cool, so while packaging I had to be carefull

#

to remove mobile map from PC build and vice versa

meager spade Mar 27, 2020, 7:53 PM

#

still feels pretty bad

#

Fortnite doesnt have a "Mobile" map

#

they use the same map

rich ridge Mar 27, 2020, 7:54 PM

#

i know that.

#

I m a big sucker for neat and clean stuff and now I m stuck with dirty approach 😓

#

Lets say I have asset path as Content/MapAssets and Content/MapAssetsMobile and if I inject some code in build script to refer assets path as per build type.

#

This should do

meager spade Mar 27, 2020, 7:59 PM

#

you could make a DataAsset

#

Mobile/Normal

#

that all your assets pull there materials from

#

based on the loaded asset

#

but feels messy still

rich ridge Mar 27, 2020, 8:00 PM

#

yeah still messy

slate veldt Mar 27, 2020, 8:01 PM

#

Is there a quick way of telling how many replicated values an actor has, or what's causing saturation?

meager spade Mar 27, 2020, 8:01 PM

#

net profiler

meager horizon Mar 27, 2020, 8:09 PM

#

@rich ridge oh, for me it connected but then the server would immediately segfault

#

If the maps differed slightly

#

I kind of expected there to be map versioning and my research shows the entire game executable is what is versioned

#

It will refuse connect if game client versions differ

rich ridge Mar 27, 2020, 8:11 PM

#

So everytime we update a map, we need to update the dedicated server binary as well?

meager horizon Mar 27, 2020, 8:13 PM

#

I think you have to change the executables VS_VERSIONINFO

#

from within project settings

#

But I havent looked too deeply into it

#

I don't plan to change the map without changes to the exe in the gold release

rich ridge Mar 27, 2020, 8:14 PM

#

Hmm makes sense

slate veldt Mar 27, 2020, 8:41 PM

#

@meager spade Didn't you used to have to make a source build of the engine for that tool? Is it included now?

meager horizon Mar 27, 2020, 8:55 PM

#

Considering to build a Linux dedicated server binary you need to build from source id expect for most here that isn't an issue

half jewel Mar 27, 2020, 10:01 PM

#

@slate veldt just go to Engine\Binaries\DotNET\NetworkProfiler.exe

#

its been included for a while now

cunning shoal Mar 28, 2020, 12:58 AM

#

hey guys, anyone here experiencing server and client correction fighting upon upgrading to 4.24? (I'm on 4.24.3) I haven't tested a standalone build but using PIE with multiple players, causes my clients to jump back quite a bit and quite often - network simulation is disabled

#

I've seen this issue appear on the forum once in the 4.24 thread with no reply.... I'm not doing anything specialize with movement and have no issues on 4.23

meager spade Mar 28, 2020, 1:29 AM

#

pie is just buggy

#

test in standalone

cunning shoal Mar 28, 2020, 1:32 AM

#

yes but I also need it to work in PIE, I do thousands of tests in there before building the game

half jewel Mar 28, 2020, 1:54 AM

#

any [PacketSimulationSettings] in ini files ?

cunning shoal Mar 28, 2020, 1:56 AM

#

not that I've added myself

#

i just figured something out though

#

i have a limit of 200 (the max you could set) for frames per second.... but in game i tried limiting the server to 60fps suddenly that issue stops happening on the client

#

why would the server's frame rate affect the client's movements? that seems silly

meager spade Mar 28, 2020, 2:17 AM

#

200 fps == 200 updates a seconds

#

from the server to clients

#

for movement

cunning shoal Mar 28, 2020, 2:26 AM

#

i thought framerate was just for the graphics though, so the FPS affects the rate at which network updates are sent too? Isn't that the Tick rate?

fading birch Mar 28, 2020, 2:33 AM

#

you can set that separately if you want.

hoary lark Mar 28, 2020, 2:38 AM

#

very probably just talked about the same issue a couple pages up. net saturation.

#

if capping FPS magically fixes it and if you don't know yet how to use stat net and the profiler to check for it, that's my bet

#

like Kaos said, if your game is running at 1 million FPS, your character movement component will update itself 1 million times per second, and for the server to 100% recreate what every client is doing, it has to receive every single update

cunning shoal Mar 28, 2020, 2:39 AM

#

Well I did run the net profiler when i was having those issues (with uncapped fps):

📎 unknown.png

#

but compared to what i was seeing on the live training for optimization, my numbers were lower so i didnt expect that to be the issue

#

yes for sure, that makes sense. How would I go about solving it so that I can have an uncapped FPS for players with 144hz/240hz refresh rates to be able to host servers without issue?

hoary lark Mar 28, 2020, 2:43 AM

#

increase the bandwidth limit (by default I think it's probably 10kbps hence why you're getting those super flat sections just below 10 kpbs) and/or turn on the network update rate limiter (this is not the right name for it, I told the guy earlier I that I couldn't remember the name too, what the heck is the darn name)

#

my project is still in 4.21 but I think these are still applicable for the first one (in DefaultEngine.ini) https://gyazo.com/50dad2fbb7c5f476a8c3965df88a9f38.png

#

also lol I have an extra zero on the last two don't I. well that's ok, my game will probably never make it past alpha anyway monkafuckt

cunning shoal Mar 28, 2020, 2:47 AM

#

haha, hmmm interesting! thank you, I wasn't aware there was a bandwidth limit or rate limiter

hoary lark Mar 28, 2020, 2:49 AM

#

upon searching in here it might be 15 kbps by default, my settings up there should change that to a more "modern" 50 kpbs (although if a game had a hundred players like fortnite it might be wiser to keep it low and optimize it in other ways to prevent net saturation, because if everyone is sending 50+ it's going to be a tsunami of data for the server)

#

we still haven't 100% confirmed this is your actual problem btw, but it's the usual culprit if reducing FPS a bit fixes it

cunning shoal Mar 28, 2020, 2:51 AM

#

well if I'm doing the math right, @ 50kbps with a standard 10mbps internet connection.... and assuming the rule of 85% of upload bandwidth available - you should be able to sustain 170 connections with that in an ideal world

#

not that I need that many players, I'm aiming for a max of 32

#

right, makes sense - i'll give it a try and see 🙂 thanks

plush wave Mar 28, 2020, 2:53 AM

#

I'm confused, do all RPCs need "WithValidation"?

hoary lark Mar 28, 2020, 2:56 AM

#

it's only for server RPCs, someone else might know if you still need to use the specifier or not (you always need to define the _Validate function now, the WithValidation specifier only exists because originally it was optional)

meager spade Mar 28, 2020, 3:05 AM

#

4.22+ no need for it

#

without it defaults to true

#

might be 4.23+ either way

plush wave Mar 28, 2020, 3:19 AM

#

So the "WithValidate" specifier, and the _Validate are both optional?

meager spade Mar 28, 2020, 3:30 AM

#

in later ue4 version yes

chilly mason Mar 28, 2020, 3:51 AM

#

what's a sound packet loss rate to simulate when testing the resilience of my netcode?

#

rate and timespan

#

by sound I mean sensible, something that could be expected with the worst of connections but not something like an unplugged ethernet cable

#

i.e. something that an application is expected to recover from

half jewel Mar 28, 2020, 4:12 AM

#

bursts of packetloss which is common in some internet connections

#

you would need to toggle it on and off i imagine

#

@chilly mason i have a pfsense box that monitors my home connection, looks like today i had 3% packetloss lasting over 20 minutes.

📎 unknown.png

#

just some data for you i guess 🤷‍♂️

fleet raven Mar 28, 2020, 4:18 AM

#

I have seen a player hosted server with 30% loss before

#

needless to say, it did not work very well

chilly mason Mar 28, 2020, 4:19 AM

#

@half jewel hey thanks! that's almost no packet loss

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@fleet raven 30% pl over what timespan?

fleet raven Mar 28, 2020, 4:19 AM

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the entire time I was connected to it

chilly mason Mar 28, 2020, 4:19 AM

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or you mean in general

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hm

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okay I guess I could set that as the worst case target

fleet raven Mar 28, 2020, 4:20 AM

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idk what kind of caveman isp they were on

chilly mason Mar 28, 2020, 4:20 AM

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well... most isps here in the us suck compared to any of the european isps I've witnessed

meager spade Mar 28, 2020, 4:41 AM

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shouldn't a fast array serializer call OnChanged on client when a pointer is resolved?

cunning shoal Mar 28, 2020, 5:03 AM

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@hoary lark good call! your changes fixed the issue while running at 102fps!! thank you so much. Now to optimize my game so I'm not using all that bandwidth....

fading birch Mar 28, 2020, 5:25 AM

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@cunning shoal you can specify the net update rate per class iirc. So if you have something that doesnt need to be updated every frame, you could have it update once every 10 frames or adjust ot as needed.

cunning shoal Mar 28, 2020, 5:27 AM

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yep, I tried playing with that first but it didnt resolve the issue. That being said, I am applying lower rates now and trying to use dormancy as well to optimize the network traffic

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biggest thing taking my bandwidth are physicals objects that players can push around... I have a rep notify variable attached to their location, and when the location vector changes it updates

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so I think reducing network updates and using dormancy for that will help a lot

fading birch Mar 28, 2020, 5:53 AM

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are you using a dedicated server?

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we have a similar mechanic in our game with elevators

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and we found it ran a lot smoother if the server actually moved them and just sent the updated location to the client.

cunning shoal Mar 28, 2020, 6:03 AM

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hmmm well right now im using a listen server

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📎 unknown.png

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and this is the rep event:

📎 unknown.png

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so the physics object is only setting the variable on the server side, but i suppose the physics simulation is done both client and server if i understand correctly (it's not the smoothest esp with lag)

twin minnow Mar 28, 2020, 12:59 PM

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hey @thin stratus sorry to bother you, but I saw your reply to my message about AGameSession::KickPlayer. It seems that this function is returning false when I call it in InitNewPlayer. I guess it is because the player controller has not fully initialized yet or something, but what would be the best way to kick incoming players from the server's AGameMode class. Right now, players have to pass an id value when calling OpenLevel and I want to try to kick out players who don't pass a valid id value. I have thought of using a timer function, but I'm not sure how long it will take for the player controller to fully initialize, if that is even the case.

thin stratus Mar 28, 2020, 1:00 PM

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PreLogin or Login

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One of them passes the Options

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Both have an ErrorMessage.

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If you leave it empty, they will pass. If you set it to something, they will be denied.

twin minnow Mar 28, 2020, 1:02 PM

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thx

twin minnow Mar 28, 2020, 1:48 PM

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@thin stratus another stupid question, but if a player gets kicked by setting the ErrorMessage parameter in PreLogin, will that player ever get picked up/counted by GetNumPlayers? Again stupid question ik

thin stratus Mar 28, 2020, 1:49 PM

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Not sure, but don't think so

twin minnow Mar 28, 2020, 1:49 PM

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alright thx again

royal isle Mar 28, 2020, 2:15 PM

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hey is there a way to check if a new client connection happened due to an absolute travel instead of a client connecting?

karmic briar Mar 28, 2020, 3:30 PM

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🤔

solar ivy Mar 28, 2020, 3:40 PM

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hey, i have a question about a replication order. lets say i create a replicated weapon actor on the server. its owned and created by my character. then i immediately call a reliable rpc from server to an owning client and pass the weapon reference and some additional properties. is it possible that weapon creation on the client will happen after the rpc execution? so the reference to the weapon will be invalid on my client once rpc received. or will those events happen strictly in the order on my client?

karmic briar Mar 28, 2020, 3:48 PM

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🤔

twin minnow Mar 28, 2020, 3:49 PM

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i believe that by the time the rpc reaches your client, there is a chance that the weapon may not have replicated in time. You can use on rep notifies on the client to know for sure when the weapon has spawned and replicated to the client

bitter oriole Mar 28, 2020, 3:56 PM

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You should make no assumption about replication speed, not the order of replication and RPCs

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Reliable RPCs have order guaranteed and that's it

twin minnow Mar 28, 2020, 3:57 PM

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@royal isle did you mean how to check if a new client connection is seamless or not? Because absolute has to do with the options passed when travelling

royal isle Mar 28, 2020, 3:58 PM

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I mean I need to check if a player connected normally on his own or reconnected due to a server travel

twin minnow Mar 28, 2020, 5:25 PM

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hey @thin stratus, is there a way to add a timeout for OpenLevel or stop a client/server travel midway? So for example, if a client is taking too long to connect to the server, I would rather not have the client continue to waste more time if possible.

gritty pelican Mar 28, 2020, 5:28 PM

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If a player leaves the game, then his PlayerState is destroyed along with him? will PlayerState be removed from PlayersArray?

rose egret Mar 28, 2020, 5:28 PM

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how big a listen server map could be ? whats the maximum size that UE4 can handle ?