#multiplayer | Unreal Source | Page 548

fading birch Jun 12, 2020, 9:10 PM

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yeah

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sec

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under Project Settings -> Maps & Modes:

📎 unknown.png

shy kelp Jun 12, 2020, 9:12 PM

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oh

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thank u!

fading birch Jun 12, 2020, 9:13 PM

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np ^^

shy kelp Jun 12, 2020, 9:13 PM

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And the clients should open the servers ip? what i had before was that the clients can host a server if they want, but currently, i want a dedicated server.

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so is the process for the clients to join a dedicated server the same as a listen server? @fading birch

fading birch Jun 12, 2020, 9:15 PM

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it's a bit different

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but yeah

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you just need the server IP

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which for local testing is just 127.0.0.1

shy kelp Jun 12, 2020, 9:15 PM

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ok

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port?

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is a port needed?

fading birch Jun 12, 2020, 9:17 PM

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nope

shy kelp Jun 12, 2020, 9:17 PM

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ok thank u!

fading birch Jun 12, 2020, 10:04 PM

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every instance of the game running has it's own game instance

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is there a reason you need the server to call these endpoints specifically?

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sure, but why do you need the server to do it specifically?

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so you have 2 options. If it's not working through game mode, then your authentication to your webserver is borked somewhere otherwise your game server would be able to connect just fine.

You can create a game instance subsystem to manage your connection to your webserver then create endpoints on your webserver to actually update these things, you can verify they're correct on your game server before you send them out.

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does your webserver that stores the inventory stuff require authentication?

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and does your game server have that authentication?

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and it's not showing the game server as connecting?

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it may be this line:

UdpSocket = FUdpSocketBuilder("TestSocketListen").AsNonBlocking().Build();```

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since you have the function call to your SendUDP at the end of your ListenUDP function

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it could just not be ready yet

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well you can have it nonblocking

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but I'd look into what that does exactly

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there's probably a delegate you need to bind to or something

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that triggers when it's done

fading birch Jun 12, 2020, 11:37 PM

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i'm not sure, i've not worked with sockets too much

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at least it's working 😄

harsh lintel Jun 13, 2020, 12:46 AM

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is there a convenient way of calling c++ functions locally and on the server? I find myself having two functions with the same functionality some times only with different function specifiers (server/client)

fading birch Jun 13, 2020, 2:53 AM

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not really, that divide exists for a reason.

twin juniper Jun 13, 2020, 3:39 AM

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I've been having an issue for the past week with the steam subsystem and when I try and host a lobby it gets automatically destroyed :(:( Im at a loss

fading birch Jun 13, 2020, 3:50 AM

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have you set a product ID for steam?

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are you testing in stand alone and not PIE?

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have you confirmed Steam works in your project?

twin juniper Jun 13, 2020, 3:51 AM

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I've set the id to 480
I am testing in the packaged version
Steam overlay works it just kicks me from the lobby

fading birch Jun 13, 2020, 3:54 AM

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is there an error message?

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do you have a session created through steam?

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i'm not 100% sure you can create a lobby with the 480 id

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I've not worked that deeply with steam, at least not lobbies

twin juniper Jun 13, 2020, 3:55 AM

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I'll check the logs again

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I found this "HostIP: INVALID SteamP2P"

fading birch Jun 13, 2020, 3:58 AM

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that seems like a steam block

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like I said, i've not worked that deeply with steam so i'm not 100% sure

twin juniper Jun 13, 2020, 3:59 AM

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That's all cool dude, thank you very much for helping out here 🙂

acoustic jewel Jun 13, 2020, 6:26 AM

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Continuing my dedicated server questions. I am making a CS sort of game, a player is creating a game using a map and a winning condition (deathmatch, CTF) and the others are joining. Can I implement that on a dedicated server using Steam sessions?

fading birch Jun 13, 2020, 6:37 AM

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You can, although you don't technically need to use steam sessions for that

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you can just use a gamemode of that type (DeathMatchGameMode, CTFGameMode, etc) to set the rules of that particular game type

acoustic jewel Jun 13, 2020, 6:40 AM

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But can I create multiple games?

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Host, let's say, 5 games on the same dedicated server

fading birch Jun 13, 2020, 6:41 AM

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no

acoustic jewel Jun 13, 2020, 6:46 AM

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Oh, ok

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Thanks again!!

fading birch Jun 13, 2020, 6:53 AM

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As far as I understand it, you use sessions to find servers that are hosting games. A server is only capable of hosting one session at a time and running only one game at a time. You generally have several different instances of servers running utilizing their own sessions. You use the subsystem's match making, in this case steam, to find sessions that match your query then the client joins the server it finds depending on your match making criteria

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If you're using something like AWS Gamelift, you have to do it a bit differently if you're not using steam, but you don't really need to rely on sessions in that case as Gamelift handles matchmaking for you.

karmic briar Jun 13, 2020, 7:04 AM

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hey guys so anyone here have action rpg inventory system can help me
i've been trying to find a way to when i equip specific weapon like sword or bow,it will play that swordman state or archery state
i tried 2 things that i know might be help 1.in the structure called InventoryItem i added an enum called WeaponState and in that its basicly for when i created a weapon for example sword i can set the enum state as swordsman.first method i tried is in the managercomponent of this inventorysolution in there are two funtions called equipitem and unequipitem there i basicly use macro that has reference to the inventoryitem structure and set the variable in both of those function.then in animbp i can get reference of that component and use it for various weapon state but that doesnt work
second method that i tried is i get the reference to the inventory item directly and use it in animbp but thats doesnt work either
i also asked in the arpgis forum for help as well and i tried this method https://forums.unrealengine.com/unreal-engine/marketplace/65774-action-rpg-inventory-system?p=1765112#post1765112 but thats doesnt work either or maybe what i tried in april by using this method is wrong

Unreal Engine Forums

Hello All,

I am happy to announce our first marketplace content.

Action RPG Inventory System - Marketplace Link (https://www.unrealengine.com/marketplace/arpg-inventory-system)
Supported Engine Versions: 4.13 - 4.24

Views: 1 Size: 200.6 KB ID: 1168237

Update Notes:

V1.1...

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now im run out of ideas on what i can do
the other method that someone recommend is merging weapon component pack from marketplace into it but i dont want to buy something i can get it done myself

twin juniper Jun 13, 2020, 10:30 AM

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Hi guys, can someone help me a bit of replication problems, im a bit new so im not sure why its not working. I have a character with a controller, which can open up a shop widget. I want the shop to add grenades when button click. This works for the host, but not for any clients. They dont get any grenades when i press the button...

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📎 unknown.png

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normal jacinth Jun 13, 2020, 11:02 AM

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Hi 🙂 I have a very basic setup - a replicated ball rolling down a hill, using UE physics. However, the ball's position appears in different places based on client or server (I think the client's balls are lagging). Does anyone know how to resolve this?

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@twin juniper have you seen this - http://cedric-neukirchen.net/Downloads/Compendium/UE4_Network_Compendium_by_Cedric_eXi_Neukirchen.pdf you need to create custom events and flag them as running on server and the multicast them

thin stratus Jun 13, 2020, 11:15 AM

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@twin juniper You aren't following replication rules

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While you have the Grenade Variable set to replicate, only the Server is more or less allowed to set it (minus prediction done on owning client).

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Your UI is local only, so your button press will keep the call on the Client

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Which means you never tell the Server to change the grenade count

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And thus, no replication happens.

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You need to perform a Server RPC (no in the Widget, but in the PlayerController)

small storm Jun 13, 2020, 11:41 AM

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@thin stratus Ahhh yeah i was thinking it was something like that when i started printing debugs... What do you mean server RPC?? And how do i call that from the widget

fringe marsh Jun 13, 2020, 11:43 AM

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Hi, can anyone help me? I'm trying to create a player HUD for multiplayer but I'm not entirely sure what blueprint I would make that in. I've made a main menu for players to join and host servers with different levels. If I create it in the level blueprint I'd need to make it for every level. So what would be the best place to create it in??

meager spade Jun 13, 2020, 11:45 AM

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@normal jacinth replication and physics == bad time

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there is no fixed timestep, projectile movement component kinda fakes it

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maybe look into that code (but its C++ not blueprint)

small marsh Jun 13, 2020, 12:01 PM

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@fringe marsh You can create at PlayerController

thin stratus Jun 13, 2020, 12:01 PM

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@small storm Read the document that was linked by DucatiSteve

fringe marsh Jun 13, 2020, 12:08 PM

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@small marsh at PlayerController? What do you mean by that?

small marsh Jun 13, 2020, 12:09 PM

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@fringe marsh You can use Widget instead of HUD

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fringe marsh Jun 13, 2020, 12:15 PM

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@small marsh ohh, was that created in the widget blueprint of the HUD?

small marsh Jun 13, 2020, 12:16 PM

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@fringe marsh 1) Create common Widget

📎 unknown.png

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You need your own PlayerController class
in PlayerController create widget and add it to viewport

fringe marsh Jun 13, 2020, 12:20 PM

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Ohhh okay I think I get what you're saying. If I create my own PlayerController class, will it mess up other functions where I've already used the default controller?

small marsh Jun 13, 2020, 12:23 PM

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@fringe marsh the child class can do everything the same as the parent. problems are not expected)

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@fringe marsh don't forget replace default PC

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fringe marsh Jun 13, 2020, 12:28 PM

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@small marsh ahh okay, I've created it, but what kind of variable reference is the set HUD?

small marsh Jun 13, 2020, 12:30 PM

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@fringe marsh HUD only name, that holds GamePlayUI type. I created it for access this widget in future

📎 unknown.png

fringe marsh Jun 13, 2020, 12:34 PM

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Okay I see, thank you! I'll give it a try and see if it works

weary badge Jun 13, 2020, 4:12 PM

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are blueprints inside the Game Instance permanently loaded to memory, while the game is open ?

fleet raven Jun 13, 2020, 5:25 PM

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yes

jovial stream Jun 13, 2020, 5:36 PM

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How do I access variables from the server? I am trying to replicate the seed, number of rooms, and if it is using a random seed

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📎 unknown.png

meager spade Jun 13, 2020, 5:36 PM

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GameState

jovial stream Jun 13, 2020, 5:36 PM

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Alright thank you

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@meager spade When I use a custom game state it breaks the game

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I cannot control a player that joins a session

meager spade Jun 13, 2020, 5:46 PM

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then thats an issue with your game

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using a custom game state does not break anything

small marsh Jun 13, 2020, 5:48 PM

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@jovial stream Where you put your logic ? GameMode?

jovial stream Jun 13, 2020, 5:48 PM

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It is in an actor

small marsh Jun 13, 2020, 5:49 PM

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@jovial stream Maybe GameMode is a better place to generate seed?

jovial stream Jun 13, 2020, 5:49 PM

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I tried it it didnt work

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and I just fixed the game state issue

meager spade Jun 13, 2020, 5:50 PM

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we generate our seed in GameMode

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and set it on GameState

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for other players

small marsh Jun 13, 2020, 5:50 PM

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++

jovial stream Jun 13, 2020, 5:51 PM

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I am setting the seed in an in-game host server menu

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📎 unknown.png

small marsh Jun 13, 2020, 5:51 PM

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you can transfer through GameInstance or use as parameter when traveling to different level

jovial stream Jun 13, 2020, 5:51 PM

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ah alright

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i'll try it out

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And in the actor that generates the structure I should reference the game state?

small marsh Jun 13, 2020, 5:53 PM

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Actor onBeginPlay can acess GameState and get seed from it.

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But first you need to put value to GameState. Perfect moment on GameMode creation

jovial stream Jun 13, 2020, 5:55 PM

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Alr

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@small marsh when should I cast to the game state to set the variables, on begin play?

small marsh Jun 13, 2020, 6:00 PM

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@jovial stream Every time when you need to get/set your variables. To set do this at GameMode begin play

jovial stream Jun 13, 2020, 6:01 PM

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👌

small marsh Jun 13, 2020, 6:02 PM

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and don't forget set variables replicated

jovial stream Jun 13, 2020, 6:02 PM

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oh yeah that's probably a good idea

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lol

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@small marsh the variables aren't setting, am I doing something wrong?

📎 unknown.png

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📎 unknown.png

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fading birch Jun 13, 2020, 6:13 PM

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does that print string run?

jovial stream Jun 13, 2020, 6:14 PM

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yes

small marsh Jun 13, 2020, 6:15 PM

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@jovial stream You set seed at lobby or similar place, right? then create advance session to transfer seed data. But you try get variables in your lobby and when level changes variables again empty

jovial stream Jun 13, 2020, 6:15 PM

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yes

small marsh Jun 13, 2020, 6:15 PM

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open level -> creating new gameMode instance

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and when New GameMode created you need do your operations

small storm Jun 13, 2020, 6:17 PM

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So im reading about replication and stuff, but im wondering if someone can explain with their own words, what functionallity should i put in the replicated character/pawn and what should i put in the player controller and why?
Is there a major difference in what stuff should go where?

fading birch Jun 13, 2020, 6:20 PM

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@small storm Something I would replicate on a pawn rather than controller is health. The pawn will die, the controller would just possess a new pawn on respawn.

Something I would replicate on a controller rather than pawn is a shoot function. The pawn may have it's own shoot function which is also replicated, but a generic shoot function on the controller would call shoot on that pawn.

small storm Jun 13, 2020, 6:22 PM

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Thanks

jovial stream Jun 13, 2020, 6:22 PM

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@small marsh how can I transfer over the data to the new gamemode that is being created?

small storm Jun 13, 2020, 6:23 PM

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And what does RPC stand for? I havent seen any docs so far actually saying what it is

fading birch Jun 13, 2020, 6:24 PM

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Remote Procedure Call

small storm Jun 13, 2020, 6:25 PM

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Aha

fading birch Jun 13, 2020, 6:25 PM

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It's on page 59 of this http://cedric-neukirchen.net/2017/02/14/multiplayer-network-compendium/

Cedric Neukirchen

eXi

Multiplayer Network Compendium

small storm Jun 13, 2020, 6:25 PM

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Yeah im here now

fading birch Jun 13, 2020, 6:25 PM

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Which is in the pins

small storm Jun 13, 2020, 6:25 PM

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📎 unknown.png

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I was gonna ask, do you always need to do the things through the gamestate?

fading birch Jun 13, 2020, 6:26 PM

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No

small storm Jun 13, 2020, 6:26 PM

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could you just skip that node and have the same effect?

fading birch Jun 13, 2020, 6:27 PM

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Technically yes you could call it in the player controller for example.

jovial stream Jun 13, 2020, 6:29 PM

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@small marsh THANK YOU SO MUCH IT WORKS NOW!!

small marsh Jun 13, 2020, 6:36 PM

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@jovial stream Nice)

real cedar Jun 13, 2020, 6:54 PM

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Could someone help point me in the right direction for where to look.

My issue is when I play offline, the character loads just fine, when I play as a Client (doesn't matter if it's 1 or more players), spawns in with black screen. Rest of the HUD elements all load, but screen is black essentially.

UE 4.25.1

small marsh Jun 13, 2020, 6:56 PM

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Maybe troubles with camera?

real cedar Jun 13, 2020, 7:07 PM

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If I run 2 players, and play as listen server, it loads correctly for the server player, but client, it has the black screen with hud on. I can move around as the client and see it working fine on the server player.

small marsh Jun 13, 2020, 7:19 PM

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@real cedar u using default camera or on player join use SetViewTargetWithBlend?

real cedar Jun 13, 2020, 7:38 PM

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I'm using ALS V4 as well. They have their own camera manager

real cedar Jun 13, 2020, 8:04 PM

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@small marsh

small marsh Jun 13, 2020, 8:05 PM

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@real cedar Not familiar with that. Try to setup very basic level only with Players

real cedar Jun 13, 2020, 8:07 PM

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ok

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Thanks anyways!

shy kelp Jun 13, 2020, 8:40 PM

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Is there a way to set up an invisible barrier that only allows only certain people to go through, more specifically can you disable collision on a object only for specific people

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and would this be done in the gamestate?

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or player controller

chrome bay Jun 13, 2020, 9:23 PM

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If you want to send some data between server and clients but not via regular game traffic, the solution is a socket right?

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Provided you want to keep everything internal to unreal

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I assume though, sending things like ptrs to objects and such isn't gonna work like that? Needs to be through the game?

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Just putting out feelers to see if anyone has messed with this.

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Oh actually, beacons would do. Duh

floral crow Jun 13, 2020, 11:19 PM

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Quick question about the engine: A replicated component spawns on the client with the actor at the same time? or it arrives later?

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As in: Actor set to replicate with component attached on the editor set to replicate spawns on server. Which of the following is true:

The replicated copy spawns on the client with the component at the same time
or 2) The replicated copy of the actor spawns on the client and later on a different network message arrives with the replicated component

signal lance Jun 14, 2020, 12:59 AM

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if the component is a part of the actor it will get created at the same time, doesn't matter if it's replicated or not in this case pretty sure

shy kelp Jun 14, 2020, 1:59 AM

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just so i know, PathToUE4Editor.exe PathToYouProject.uproject -server -log shortcut makes a dedicated server right?

fast mason Jun 14, 2020, 2:38 AM

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hey

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Hi there!

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I'm looking for some guidance.. I used the TopDownCharacter as base for my project.. and recently started working on the multiplayer code..

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the thing is, Simple Move Location is not replicated, it only works in the Server

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I tried to enable the "replicate movement" in the controller, without success

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any idea?

shy kelp Jun 14, 2020, 3:21 AM

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there are plenty of movement replication tutorials on youtube

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its kind of a tedious process

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i swear to god, this error is the bane of my existence

📎 error.JPG

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can someone tell me the meaning

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i figured that out but i have another problem regarding that now

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im trying to get the guildid stored in my playerstate, but this function isnt even firing. the cast seemed to be successful for playerstate as well

📎 error1.JPG

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this is in the playercontroller btw

wheat edge Jun 14, 2020, 3:33 AM

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pull of player state and check if its valid before getting guild id

shy kelp Jun 14, 2020, 3:35 AM

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📎 error2.JPG

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yh i will try that now

elfin vortex Jun 14, 2020, 3:35 AM

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Hey all, I am brainstorming for a contract which is a multi-user museum type experience. Does anyone here have industry experience getting Oculus quest p2p or other networking architecture working? I'd love to chat about a possible consultancy.

shy kelp Jun 14, 2020, 3:37 AM

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@wheat edge i got a false, but idk why

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i did a breakpoint on the cast and it seemed to work

lucid vault Jun 14, 2020, 3:37 AM

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Anyone know why SetOwner(nullptr) throws an error? I want to set the owner back to the server for an actor

wheat edge Jun 14, 2020, 3:38 AM

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Instead of using set BPPlayer state u should try get BpPlayer state first

shy kelp Jun 14, 2020, 3:40 AM

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@wheat edge i feel stupid now, but i still got to debug cuz that didnt solve my problem... thank u either ways!

fast mason Jun 14, 2020, 3:44 AM

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yeah, a kick tip, ctrl+drag variable is default to get, and alt+drag var is default to set

twin juniper Jun 14, 2020, 3:44 AM

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Somebody knows howto configurate network smoothing?

fast mason Jun 14, 2020, 3:45 AM

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@twin juniper what kind? in the controller class you have a few parameters..

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I lied, in the Movement component*

twin juniper Jun 14, 2020, 3:46 AM

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@fast mason I've a lag at movement speed changes in client-server model, when client uses over 30 fps
yep, movement comp, needed to configurate, but I'm newbie and not fully understand how it works

fast mason Jun 14, 2020, 3:46 AM

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📎 unknown.png

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neither do I exactly, I think your best bet is to play along with the values..

wheat edge Jun 14, 2020, 3:50 AM

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If you walk around it should be smooth already by default

twin juniper Jun 14, 2020, 3:50 AM

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These parameters must be static, or it would be configurated for each client separately?

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@wheat edge no, I use locomotion system with dynamic speed changes (for 30 fps it looks fine, without lags)

wheat edge Jun 14, 2020, 3:52 AM

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Lag happens constantly or only during speed change

twin juniper Jun 14, 2020, 3:53 AM

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@wheat edge only when changed)

wheat edge Jun 14, 2020, 3:54 AM

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Try bumping up the acceleration so velocity change happens in an instant

twin juniper Jun 14, 2020, 3:54 AM

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@wheat edge It looks, such client and server not synchronized at that moment

wheat edge Jun 14, 2020, 3:56 AM

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Yes but if acceleration is high enough, it should be only one frame of differences shouldnt be that noticeable

twin juniper Jun 14, 2020, 3:59 AM

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I understood that this bug happens at desyncing, but thinking that can fix it by network manipulations..
accel not helps enough..

shy kelp Jun 14, 2020, 4:06 AM

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@fast mason thx for the tip!

fast mason Jun 14, 2020, 4:16 AM

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🙂

shy kelp Jun 14, 2020, 4:20 AM

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onpostlogin is being executed before begin play. bug or intentional design?

📎 hi.JPG

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in gamemode bp btw

fast mason Jun 14, 2020, 4:20 AM

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intentional, beginplay is executed once you are in the level

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so the "postLogin" is executed between the Login and the BeginPlay

shy kelp Jun 14, 2020, 4:21 AM

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ok

fast mason Jun 14, 2020, 4:21 AM

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think about it like any MP game, some games for example before entering the map show you a EULA

shy kelp Jun 14, 2020, 4:21 AM

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ohhh

fast mason Jun 14, 2020, 4:21 AM

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you put your credentials, login, see the EULA, accept, game starts

shy kelp Jun 14, 2020, 4:22 AM

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im using it to gather stats from a webserver, is that good?

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and using event logout to save for a last time

fast mason Jun 14, 2020, 4:22 AM

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yeah, it should be good, also you can identify the player who's doing the request

shy kelp Jun 14, 2020, 4:23 AM

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yes

fast mason Jun 14, 2020, 4:23 AM

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also, you will need a save from time to time, like when doing something relevant

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for example, acquire a item

shy kelp Jun 14, 2020, 4:23 AM

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function timer with multicast

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and death

fast mason Jun 14, 2020, 4:23 AM

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yeah

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otherwise a crash in the game client could make him loose it

shy kelp Jun 14, 2020, 4:24 AM

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ye

fast mason Jun 14, 2020, 4:24 AM

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are you a hobbist?

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hobbist/indie

shy kelp Jun 14, 2020, 4:27 AM

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hobbiest

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hoping this to be my first commercial game lol

fast mason Jun 14, 2020, 4:28 AM

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nice! me too, just getting involved, doing some RPG kinda game

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haha I dont know if I reach that point, I'm just doing stuff slowly, right now trying to make work the TopDownController in multiplayer

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maybe faking it with AIController is the solution, but idk if it's the "correct" way

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seems messy

wheat edge Jun 14, 2020, 4:33 AM

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If you are not worried about collision, and you just netmulti to change the location of camera it should work

fast mason Jun 14, 2020, 4:34 AM

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uhm, i think collision its actually essential, isn't it? I don't expect character move into a building

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at least not the ones without doors xD

wheat edge Jun 14, 2020, 4:35 AM

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Well if its a top down like look, for example warcraft 3/ starcraft camera style u wont need to worry about collision when moving around

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The unit needs collison but not the camera movement

fast mason Jun 14, 2020, 4:37 AM

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oh, well, I tough about it.. I was expecting something more like lineage 2, so when I enter a building the camera collides with the ceiling, so I don't loose the player

kindred widget Jun 14, 2020, 4:50 AM

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@fast mason Just to be clear about something, you're generally not supposed to replicate the controller anywhere other than the owning client and the server. Only one player controller should generally exist on each client. What are the trying to achieve that led you to wanting the controller replicated differently than it is?

shy kelp Jun 14, 2020, 5:31 AM

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if you want it to replicate different use the player pawn instead

fast mason Jun 14, 2020, 5:47 AM

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@kindred widget sorry, I am not replicating the controller, I know the controller is in charge of our local controls

twin juniper Jun 14, 2020, 9:57 AM

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Hi. Is anyway to update objects' variable ref on local machine from server?
Fore example. I've id=42332, which must be updated from server with new value 64573. And this local var not replicated. How to do this?

small storm Jun 14, 2020, 10:22 AM

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Whats the easiest way to add recoil when firing in a fps game, and having it replicate to multiplayer?

twin juniper Jun 14, 2020, 10:31 AM

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@small storm animation, but replicate it by var (because animbp not support rpc)

rose egret Jun 14, 2020, 11:06 AM

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how do I get angular velocity of Character in remote clients ?

twin juniper Jun 14, 2020, 11:11 AM

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@rose egret not sure, but do you know about fundamenta?)
https://youtu.be/VhG6B6NM2bQ
https://docs.unrealengine.com/en-US/BlueprintAPI/Physics/GetPhysicsAngularVelocityinDegre-/index.html

YouTube

OpenStax

Angular Velocity

This instructional video covers Rotation Angle and Angular Velocity and corresponds to Section 6.1 in OpenStax College Physics for AP® Courses.

Full course content for the AP® Physics Collection on openstax.org and is available as a self-guided course by Rice Online Learning...

▶ Play video

Get Physics Angular Velocity in Degrees

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call rpc funcion

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with owned param

small storm Jun 14, 2020, 11:12 AM

#

What do you mean animation. I'm a bit new so if youbjust say "animation" i dont even know where to start lol

twin juniper Jun 14, 2020, 11:12 AM

#

@small storm so you've a big problem, bro.. start learn blender, or maya animation, then export in ue, then how to use animbp
it's a couple of info.. good luck and have fun)
additionally in old versions ue, devs can use camera animation sequences, in new not sure that this feature still in an life
but you can using cameraShaker..

try simple asset from marketplace, and view how it works..

rose egret Jun 14, 2020, 11:13 AM

#

I need something like pPawn->GetVelocity(); there is lots of network behind it . and I don't want to write it from scratch myself.

twin juniper Jun 14, 2020, 11:14 AM

#

@rose egret i never did this too.. know that if you will try, you must use unreliable rpc in tick event

small storm Jun 14, 2020, 11:17 AM

#

Do you HAVE to use animations? cant you just add pitch to the camera controller or something similar?

twin juniper Jun 14, 2020, 11:18 AM

#

@small storm its second way to do this, yes, you can.

#

something like tick->clamp(getX+(++diff));

small storm Jun 14, 2020, 11:19 AM

#

Because im just prototyping gameplay, so i want the simplest way to just show the function

twin juniper Jun 14, 2020, 11:20 AM

#

if you know enough blender or something else, its very simple

small storm Jun 14, 2020, 11:20 AM

#

Nah xD

#

I barely know unreal my man 😉

twin juniper Jun 14, 2020, 11:22 AM

#

animation must be learned, so working with sequence or animmontage its a good way

small storm Jun 14, 2020, 11:22 AM

#

The thing is, in multiplayer, what parts of the recoil needs to be replicated, and how 🤔

twin juniper Jun 14, 2020, 11:22 AM

#

in mp only owned client must using recoil

#

its 100% client side logic

#

for other clients, its animation )))

#

via replicated variables

foggy hinge Jun 14, 2020, 11:23 AM

#

I would not make it client side. That's just going to open cheating.

small storm Jun 14, 2020, 11:24 AM

#

Cause the recoil affects where the bullets go, its not just visual

twin juniper Jun 14, 2020, 11:24 AM

#

use pattern and anticheat system.. its not for prototyping.

foggy hinge Jun 14, 2020, 11:24 AM

#

I would suggest simulating it and then correcting based on what the server says it is at.

twin juniper Jun 14, 2020, 11:24 AM

#

and requires C++ implementation skill

foggy hinge Jun 14, 2020, 11:24 AM

#

It can be done in Blueprint just fine.

small storm Jun 14, 2020, 11:24 AM

#

I think you are overcomplicating things...

twin juniper Jun 14, 2020, 11:25 AM

#

@foggy hinge server can got and incorrect data and send this data via multicast..

foggy hinge Jun 14, 2020, 11:25 AM

#

I would avoid using a multi cast, you can do the animation side of things using blend spaces.

twin juniper Jun 14, 2020, 11:25 AM

#

okay, do it)

#

I never use this method, because I prototyped too

#

can you show how it works?)

#

I told about animation too..

#

but not understand what can stops the cheaters)

foggy hinge Jun 14, 2020, 11:27 AM

#

So the theoretical layout would be something like this:

Store the aim pitch as a float on the character. Make this a replicated variable.
When the player shoots, both the server and client simulate modifying the aim pitch. If you need this to be random, make sure the randomness is deterministic.
Client should have simulated so it is the same as the server, but if it isn't then correct the client. You can make this somewhat fuzzy so that you don't have to snap the camera. Another option is to interpolate the current camera orientation to the server correct orientation.
In the character anim blueprint, use a blend space that blends the aiming animations (https://docs.unrealengine.com/en-US/Engine/Animation/AnimHowTo/AimOffset/index.html)
Use the aim pitch float to adjust the aim offset blend space. On non owning clients, they'll have replicated the aim pitch, so they should work automatically.
When calculating the camera and so forth, use the aim pitch value as the camera pitch.

twin juniper Jun 14, 2020, 11:28 AM

#

UML mby..
It looks as specator logics)

small storm Jun 14, 2020, 11:36 AM

#

I tried doing some basic stuff, but couldnt get it to work :/

#

📎 unknown.png

twin juniper Jun 14, 2020, 11:36 AM

#

Yep, it another way to try receiving actual data.. but again, replication used too

small storm Jun 14, 2020, 11:36 AM

#

📎 unknown.png

#

📎 unknown.png

#

This setup does nothing, but doesnt give any errors :/

#

ah also this

#

📎 unknown.png

foggy hinge Jun 14, 2020, 11:37 AM

#

The server already knows the gun is fired, so you don't need to replicate back and forth like that.

#

Client -> Simulate_Fire ---Replication--> Server -> Fire

#

Client can simulate everything from that point

small storm Jun 14, 2020, 11:38 AM

#

Yeah i mean the shooting script is already in place and working, so i wouldnt worry about that

#

im just adding on the recoil bit

foggy hinge Jun 14, 2020, 11:39 AM

#

Don't tell the server to add recoil.

#

There isn't a need to replicate that part

#

Because the server knows the player already fired the gun, so it should just add the recoil from that point forward

twin juniper Jun 14, 2020, 11:41 AM

#

what're doing. backward sending data to owner which called the function?

small storm Jun 14, 2020, 11:42 AM

#

Im not actually sure what im doing

#

but nothing is happening

foggy hinge Jun 14, 2020, 11:42 AM

#

Follow the above structure I laid out edWin

twin juniper Jun 14, 2020, 11:43 AM

#

@small storm https://discordapp.com/channels/187217643009212416/221799385611239424/721687264576667719
try this method..

#

you wrote half of its

small storm Jun 14, 2020, 11:44 AM

#

i will try, im a bit noob so bare with me

foggy hinge Jun 14, 2020, 11:44 AM

#

It depends on how you've done the gun firing logic.

small storm Jun 14, 2020, 11:45 AM

#

What do you mean by "Simulate modifying the aim pitch"

twin juniper Jun 14, 2020, 11:45 AM

#

@small storm glhf

📎 unknown.png

foggy hinge Jun 14, 2020, 11:46 AM

#

@small storm The client can do the same calculation as the server. For most players (non cheaters) this should provide a lag free experience. For cheaters, it will allow you to auto correct them or just completely ignore whatever the client says it is doing.

twin juniper Jun 14, 2020, 11:46 AM

#

@small storm one logics, which calling on both sides

small storm Jun 14, 2020, 11:47 AM

#

using the switch authority thingy or

twin juniper Jun 14, 2020, 11:47 AM

#

@small storm lol.. learn documentation) at first..

#

about simple methods..

small storm Jun 14, 2020, 11:48 AM

#

Im just having a hard time converting your text into actual nodes

twin juniper Jun 14, 2020, 11:49 AM

#

@small storm ask for @foggy hinge to write it for you)

small storm Jun 14, 2020, 11:50 AM

#

hey im just trying to learn

twin juniper Jun 14, 2020, 11:51 AM

#

I told what you can learn if you wanna to do it without correction method as told jammy

foggy hinge Jun 14, 2020, 11:55 AM

#

@small storm https://docs.unrealengine.com/udk/Three/ReplicationHome.html , read the technical documents. A lot of the documents are still relevant as the replication model hasn't changed between UE3 and UE4. Some names are changed. For example PlayerReplicationInfo is now PlayerState.

twin juniper Jun 14, 2020, 11:59 AM

#

but it not solve his problem in 5 minutes)) as he want

foggy hinge Jun 14, 2020, 12:00 PM

#

Nothing is going to solve things in 5 minutes.

#

If you want to do things right, you have to learn how the underlying systems work.

twin juniper Jun 14, 2020, 12:00 PM

#

@small storm you understand that you GET current pitch and SET it back to same actor?
it never be works
and try https://docs.unrealengine.com/en-US/Programming/Tutorials/FirstPersonShooter/index.html
after learning the networking system..
https://youtu.be/nH5r1QWJHOA

First Person Shooter Tutorial

Learn how to implement mechanics for a First Person Shooter game.

YouTube

Alex Deroza

gamedevelopers real life in unreal

no mat

▶ Play video

small storm Jun 14, 2020, 12:42 PM

#

where do i get and set the same actor?

twin juniper Jun 14, 2020, 12:56 PM

#

@small storm possibility on server..

delicate basin Jun 14, 2020, 2:50 PM

#

Hello! Anyone knows how to set rich presence through Uworks?

#

Steam documentation is awfull - setting right KEY and then applying VALUE, problem is finding the right one

potent cradle Jun 14, 2020, 3:53 PM

#

Has anyone been able to start a local dedicated steam server and have it visible in the internet servers tab? I can only see it in the LAN tab. Been searching, but haven't found a solution yet.

dawn summit Jun 14, 2020, 4:06 PM

#

Greetings. Can anyone explain how new multiplayer settings work in 4.25?

dawn summit Jun 14, 2020, 4:21 PM

#

📎 unknown.png

steady musk Jun 14, 2020, 4:22 PM

#

Seems like 'As Listen Server' is a Listen Server and 'As Client' is a Dedicated

dawn summit Jun 14, 2020, 4:24 PM

#

i can play networked in Play offline too

#

and it's behave differently in PIE and standalone

#

so those new Net Mode settings is quite confusing

#

and it seems won't kill dedicated until you switch to pie

twin juniper Jun 14, 2020, 4:41 PM

#

in the shooter game template in the commands it says setallowbots how do you execute that command?

steady musk Jun 14, 2020, 4:41 PM

#

What is a proper place for functions that should be Multicasted for EVERY player? Like, I want to use 'global time dilation', Ive casted it to server and multicasted time dilation change but Im 95% sure that Ive picked a wrong place :/

kindred widget Jun 14, 2020, 5:47 PM

#

How do people normally handle safely identifying players at login? For my use case I need to assign the player controller with an ID. I use this ID to know if the pawn that the controller is controlling can access certain things. My issue being that right now for testing this ID is randomly generated at controller beginplay on the server. How/where should I store this for saving the world and reloading the server so that the same player can join the same server and regain control of their character and access their same stuff? How do people usually handle connection IDs?

fast mason Jun 14, 2020, 6:01 PM

#

are you thinking of use steam sdk in the future?

#

you would need to work with a GameSession, GameState and in case of steam sdk, work with the SteamID

#

I THINK

#

sorry, not sure of this.. but I do know, that games like ARK, work based on the SteamID

#

I finally accomplished the point and click multiplayer working on AI controlled pawns.. my only problem is when playing as client, the AI pawn looks like bouncing in itself while walking.. lol

kindred widget Jun 14, 2020, 6:05 PM

#

I'm aware I could just use the SteamID, but I'm more interested in other ideas to integrate non steam login types.

fast mason Jun 14, 2020, 6:05 PM

#

short demo of the "bouncing"

📎 VirtualCommunity_Preview_NetMode__Client_1_64-bit_Windows_2020-06-14_15-04-58.mp4

#

@kindred widget you would need to go more customized, like LoginProcess and relate user/pass into a DB with CharacterID I guess..

#

there's a series of tutorials based on this

#

https://www.youtube.com/watch?v=abmzWUWxy1U&list=PLZlv_N0_O1gYqSlbGQVKsRg6fpxWndZqZ

YouTube

Unreal Engine

Blueprint Multiplayer: Project Overview | 01 | v4.11 Tutorial Serie...

In this video we take a look at the finished project and step through each of the features that will be covered in this series. We show our functional Main Menu and its options, a lobby where players can chat with one another and select their characters for the game, some serv...

▶ Play video

#

I reduced the net update frequency to 60 and its good now.. idk if this the actual solution

#

well, not quite entirely but it reduced the bouncing nicely

kindred widget Jun 14, 2020, 6:17 PM

#

Seems almost like server slightly correcting a client movement.

fast mason Jun 14, 2020, 6:20 PM

#

yeah, i reduced it to 30 now, its almost flawless, but sometimes does a little bounce, and for a <1ms worries me

#

how was the way to emulate lag?

fallen pawn Jun 14, 2020, 6:45 PM

#

How do you launch the Network Profiler?

fast mason Jun 14, 2020, 7:39 PM

#

no idea

#

I figured out the latency setup and also found out the client movement correction sucks for me

#

30ms and lot of bouncing

#

what would be the way to tell the server to only check location when I tell him

#

and avoid that instant correction

#

figured out its my camera following

#

lol

gusty slate Jun 14, 2020, 7:56 PM

#

Has anyone encountered issues before with RPCs not triggering when called from Keyboard Inputs?

#

They work sometimes, then don't work

winged badger Jun 14, 2020, 7:58 PM

#

@fast mason net pktlag=<number>

gusty slate Jun 14, 2020, 7:58 PM

#

Marking the RPC as reliable seeme to fix it. Anyone has insight on this? I want to understand it better

winged badger Jun 14, 2020, 7:58 PM

#

but if its overly correcting you, odds are one of your components replicates its location, likely capsule or the mesh

#

unrealiable RPC can fail wwhen network is saturated @gusty slate

#

and player input should always be reliable

#

but you seem to be sending way too many RPCs about

#

nothing on Tick should ever be Reliable as well, doesn't matter what it is

#

as a newer packet would reach the server/client anyways, before they had a chance to resend a failed one

gusty slate Jun 14, 2020, 8:01 PM

#

I see

#

Thank you 🙂 This is very helpful Zlo 👍

fast mason Jun 14, 2020, 8:04 PM

#

@winged badger thanks I changed it from project settings, works well! btw, what I am doing is following the AICharacter with my camera and setting relative location at tick where the AICharacter is, its whats making the bounce

#

not the actual latency

winged badger Jun 14, 2020, 8:04 PM

#

where your AI is = where its capsule is?

gusty slate Jun 14, 2020, 8:05 PM

#

Can you not attach the camera to your character?

winged badger Jun 14, 2020, 8:05 PM

#

capsule doesn't get interpolated via CMC, the skeletal mesh does

fast mason Jun 14, 2020, 8:05 PM

#

yeah, exactly and I changed the my capsule to non collision

#

oh

#

@gusty slate the thing is.. I have my own character which is invisible, and I'm following a spawned AICharacter "that belongs to me"..

#

so that way I can use the point and click functionality in multiplayer

#

I dont get how to fix it, even using the VInterp To does the bouncing

#

any helpful insight?

📎 unknown.png

#

what would be the correct way to follow a player "smoothly" ?

fast mason Jun 14, 2020, 8:55 PM

#

ok, its lag related because the character is moved server side and I'm following client side

#

i'll see how workaround

meager spade Jun 14, 2020, 9:09 PM

#

yeah your going to have that

#

have a similar setup

#

we*

#

but out controlled pawn is autonomous

#

but requires a lot of c++ changes to achieve

fast mason Jun 14, 2020, 9:13 PM

#

yeah, to be a fresh indie, I think lag compensantion is kinda complex

#

the most complicated part for me, is that AIController only works at server side.. so its harder to "fake" client-move

#

i dunno if I should abandon the point and click navigation in multiplayer..

twin juniper Jun 14, 2020, 9:54 PM

#

Anyone mind helping me figure out how I can replicate this turn in place without it being so choppy? https://streamable.com/5qr81y

Streamable

2020-06-14 16-52-39 - Streamable

▶ Play video

#

Here is a screenshot of how I've already tried to do it. If it comes in as remote I send it to the server which then sends it to the multicast. I'm still new to this and this seemed to work on something else but it just gives me a really choppy turn in place in this situation.

📎 Screenshot_243.png

buoyant wedge Jun 14, 2020, 10:11 PM

#

Hello guys. The event dispatcher work for multiplayer? 🙂

winged badger Jun 15, 2020, 12:19 AM

#

they are not and cannot be in any way networked if thats what you mean

#

but it works perfectly fine in the scope of each individdual machine

lucid vault Jun 15, 2020, 2:37 AM

#

I have some multiplayer movement code with a turn in place system.
Other player's movement looks nice and smooth on other clients.

However, other player's (clients) movement looks choppy on the server.

Is anyone familiar with similar issues? Maybe a common mistake that I made when replicating my variables?

#

I would think that it should be the smoothest on the server

twin juniper Jun 15, 2020, 2:50 AM

#

I have the exact same problem that i mentioned above. Wondering the same thing

fleet raven Jun 15, 2020, 2:52 AM

#

it's not a problem, the character movement was designed to be like that

hoary lark Jun 15, 2020, 3:28 AM

#

Choppy as in animations updating at like 20 FPS?

#

Oh just saw bronzes stresmable, not what I was thinking of

shadow aurora Jun 15, 2020, 4:55 AM

#

Ok I have a question about spawning in actors on multiplayer in C++ and variable replication. I’m not at my computer right now, so I can’t share exact lines of code. But here is a rundown of the question:

Basically, each player in our game has the ability to spawn in a pet/sidekick that follows them around. They do this by pressing a key.

These sidekicks have their own individual values for their variables including but not limited to their species & nickname. These values have to be replicated to each player connected to the session.

So my question is, how can I create this actor & then set their variables after calling “SpawnActor?” I.e. do I need to set the variables in the function that calls SpawnActor? Or does that function need to call another client/netmulticast/server replicated function? The function that calls “SpawnActor” is a server replicated function. All of the variables are set to replicate. For some reason whenever I’ve tried this the client starts to desync from the host exactly when the variables are set. Commenting out those lines where the variables are being set causes the desync to stop.

Any help would be sooooo appreciated.

thin stratus Jun 15, 2020, 5:06 AM

#

Theoretically you only need to make sure the SpawnActor is called on the Server and that the Variables are replicated.

barren patrol Jun 15, 2020, 6:17 AM

#

@shadow aurora you should do the spawning and setting variables all on server-side. did you set up the GetLifetimeReplicatedProps method so that the server will replicate the values?

#

its also fairly easy to do this all in blueprints.

nimble basin Jun 15, 2020, 7:46 AM

#

Hi all, what is the easiest path for setting up a Dedicated Server for steam? My game uses steam, and I have it working with lobbies. Do I need AWS? Does steam itself offer such a service? Pretty new to this..

#

That is, easiest path for an Indie Developer.

bitter oriole Jun 15, 2020, 7:50 AM

#

Steam doesn't host servers, so you need to find a provider to rent your dedicated servers

nimble basin Jun 15, 2020, 7:51 AM

#

Is AWS the way to go? I am not so good at C++ yet. Ideally I find a provider and an integration that lets me use Blueprints.

bitter oriole Jun 15, 2020, 7:57 AM

#

Whichever provider offers servers that are fast enough for your game

#

This isn't a code thing

#

It's a "go to website and buy instances" thing

#

There are two things here : the dedicated server software which is your game compiled as dedicated server, and the "hardware" which is what you rent

chilly mason Jun 15, 2020, 7:59 AM

#

https://docs.google.com/spreadsheets/d/1x0eok6EZzigar_K3QNdzTYNhp5NLywLGqBuopKiVzao/edit#gid=0

Google Docs

BaaS Comparison - 2020 (PUBLIC)

1:Hosted BaaS Comparison

https://discord.me/baas,This Sheet:,https://bit.ly/2HO1JVn
✓✗,AcceleratXR (AXR),Amazon GameSparks,BrainCloud,ChilliConnect (Unity),Microsoft PlayFab (PF),Photon PUN,SmartFoxServer (SFS),XTR4L1F3,A...

#

have a look at this, some guy on another server has compiled it

nimble basin Jun 15, 2020, 8:00 AM

#

I'm working on getting dedicated server working in my custom build now. I'm considering using AWS, but i'm not sure how to integrate.

#

Thank you, having a look..

bitter oriole Jun 15, 2020, 8:00 AM

#

There is nothing to integrate

#

AWS sells you servers

#

You then upload your dedicated and start instances based on your playerbase

#

You'll then use sessions to search for available dedicated servers

nimble basin Jun 15, 2020, 8:02 AM

#

Ok. I have a dedicated IP coming on Friday. I guess i will start testing at home, and worry about moving it to AWS or elsewhere once its working.

bitter oriole Jun 15, 2020, 8:02 AM

#

Good call

nimble basin Jun 15, 2020, 8:02 AM

#

Thanks for the tips

ebon hearth Jun 15, 2020, 10:19 AM

#

@nimble basin Tried looking at this guide? https://medium.com/swlh/building-and-hosting-an-unreal-engine-dedicated-server-with-aws-and-docker-75317780c567

Medium

Building and Hosting an Unreal Engine Dedicated Server with AWS and...

Today I am going to walk you through the process of building and deploying your very own Unreal Engine 4 dedicated server running on…

#

It actually covers creating an AMI for AWS specifically

#

I've just had an odd issue where a packaged game client from WindowsNoEditor was trying to launch the Dedicated Server process from BP's.

#

📎 unknown.png

#

As far as I'm aware, Is Dedicated Server should not be True unless I package for <Game>Server under the Package Targets menu

#

My only theory is that I built for Development Editor in VS first, then Development Server and then I built the Client inside UE4.

#

To build both Client/Dedicated Servers, do I really need to build Development Editor in VS, then package the client in UE, and then build Development Server in VS and then finally package the server in UE? Seems a little inefficient of a build process to me

chrome bay Jun 15, 2020, 10:27 AM

#

You can just package in UE

#

no need to build in VS first

#

ofc you need to build dev editor to get the editor open in the first place

ebon hearth Jun 15, 2020, 10:28 AM

#

Well that rules out my theory on why Is Dedicated Server returned true on a WindowsNoEditor client package

chrome bay Jun 15, 2020, 10:29 AM

#

All that node does is check the current worlds' Net Mode

#

If that fails, it'll call IsRunningDedicatedServer from CoreMisc

ebon hearth Jun 15, 2020, 10:30 AM

#

Ahhh, so I need a different way to check which binary is running, client or server

chrome bay Jun 15, 2020, 10:30 AM

#

you can use #if UE_SERVER for server builds

#

But ofc that will be false in editor even if a dedicated server is running

#

IsRunningDedicatedServer() should handle that already though

#

TL;DR that node should be working ok

ebon hearth Jun 15, 2020, 10:33 AM

#

I'm gonna need to test this again once my kid sleeps. Using her PC to test as I'm using Steam and therefore need 2 PC's

worthy knot Jun 15, 2020, 10:42 AM

#

https://www.youtube.com/watch?v=U7r38gwgdyo

YouTube

TrueOriginsInteractive

ClientProjectileShootError

▶ Play video

#

So can anyone explain why this happens?

#

engine - 4.24

#

this only occurs in the clients, the line trace follows the correct location, but the projectile - No

nimble basin Jun 15, 2020, 10:51 AM

#

@ebon hearth no I hadn't seen that guide yet. Thanks for sharing!

shadow aurora Jun 15, 2020, 3:30 PM

#

Method you should do the spawning and setting variables all on server-side. did you set up the GetLifetimeReplicatedProps method so that the server will replicate the values?
@barren patrol Yep GetLifetimeReplicatedProps is setup. I just keep getting desync any time I set a variable in that server replicated function that spawns the actor.

winged badger Jun 15, 2020, 3:50 PM

#

it also requires a Super call to be there

shadow aurora Jun 15, 2020, 4:02 PM

#

Yep I've got that.

#

One thing I've noticed is that the OnRep functions for my variables aren't being called, and I'm not sure why...

#

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

DOREPLIFETIME(AMonster, Health);

}

This isn't the full function, but this is what my GetLifetimeReplicatedProps looks like.

#

And this is the macro (I think that's the right word) above the Health property.

UPROPERTY(ReplicatedUsing = OnRep_Health)

muted perch Jun 15, 2020, 4:35 PM

#

I need help with health replication for listen servers

#

📎 2020-06-15_12-38-55.mp4

meager spade Jun 15, 2020, 4:42 PM

#

why are you multicasting

#

don't abuse multicasts

gusty slate Jun 15, 2020, 5:00 PM

#

Hello,
Why do I see a check for Authority on server RPCs? 🤔

#

Doesn't a sever RPC always execute on server thus Authority is always true?

meager spade Jun 15, 2020, 5:41 PM

#

where do you seethem?

shadow aurora Jun 15, 2020, 5:51 PM

#

The health is being set server-side, and it seems to only replicate to the server. Here's a snapshot from the server/host.

📎 unknown.png

#

And here's an image from the client:

📎 unknown.png

meager spade Jun 15, 2020, 6:19 PM

#

well pictures are all good

#

but what can we know from this? apart from your logic/code is bad?

shadow aurora Jun 15, 2020, 6:25 PM

#

I've already shared out information about what is happening. Basically I have a function responsible for spawning in these two characters. It is a server RPC. That RPC spawns them in, and then calls a function inside their class that is also a server RPC. In this function, I am setting their health. The health variable is set to replicate, but for some reason it only replicates to the server. I even have checks inside the functions to make sure that the actors are being spawned/initialized by the server.

barren patrol Jun 15, 2020, 6:32 PM

#

@shadow aurora what happens if you set the value outside of this spawning method?

#

try to separate the issue between general replication setup for the variable, and your RPC codepaths

#

try setting it only on client, and only on server (two different tests). with some good amount of delay after the spawn. what happens on each side?

meager spade Jun 15, 2020, 7:01 PM

#

nothing replicates to the server

#

server replicates to clients

#

how are you getting the health for the enemies widgets ?

#

@shadow aurora

#

mark the Health property RepNotify and put a print string in it

#

and make sure the value is good

gusty slate Jun 15, 2020, 7:06 PM

#

@meager spade I saw it on a template project from the Marketplace I was referencing

#

It does seem to be non-necessary as a server is always the authority

meager spade Jun 15, 2020, 7:07 PM

#

its not needed

#

Server rpcs ONLYrun on server

#

client calling them gets ignored

#

well say ignored, it tells the server to run this function, client doesnt run it

glacial shuttle Jun 15, 2020, 8:28 PM

#

LogSteamShared: Steam SDK Loaded!
LogOnline: OSS: Creating online subsystem instance for: Steam
LogOnline: STEAM: Steam User is subscribed 1
LogOnline: STEAM: [AppId: 1308***] Client API initialized 1
LogOnline: STEAM: [AppId: 1308***] Game Server API initialized 1```
```[2020.06.15-20.15.57:048][707]LogModuleManager: Warning: ModuleManager: Module 'SocketsSteam' not found - its StaticallyLinkedModuleInitializers function is null.
[2020.06.15-20.15.57:048][707]LogSockets: Warning: Unable to load SocketSubsystem module Steam
[2020.06.15-20.15.57:048][707]LogNet: ReplicationDriverClass is null! Not using ReplicationDriver.
[2020.06.15-20.15.57:048][707]LogNetCore: DDoS detection status: detection enabled: 0 analytics enabled: 0
[2020.06.15-20.15.57:048][707]LogNet: Warning: Failed to init net driver ListenURL: /Game/Maps/LobbyLevel??listen: SteamSockets: setsockopt SO_BROADCAST failed (0)
[2020.06.15-20.15.57:048][707]LogNet: Error: UEngine::BroadcastNetworkFailure: FailureType = NetDriverListenFailure, ErrorString = SteamSockets: setsockopt SO_BROADCAST failed (0), Driver = GameNetDriver IpNetDriver_2147480296
[2020.06.15-20.15.57:048][707]LogNet: Warning: Network Failure: GameNetDriver[NetDriverListenFailure]: SteamSockets: setsockopt SO_BROADCAST failed (0)
[2020.06.15-20.15.57:048][707]LogNet: NetworkFailure: NetDriverListenFailure, Error: 'SteamSockets: setsockopt SO_BROADCAST failed (0)'```
I am getting this error in a packaged development build when I try to start a listen server, I am launching the game from steam. It works fine in standalone but packaged dev gives these errors. Any ideas?

shy kelp Jun 15, 2020, 8:49 PM

#

unless they have to be public, should i make most of my variables private?

wheat magnet Jun 15, 2020, 9:45 PM

#

@buoyant wedge answers to your question:
->https://answers.unrealengine.com/questions/895792/multiplayer-event-dispatcher.html?childToView=895838
->https://answers.unrealengine.com/questions/202526/view.html

shy kelp Jun 15, 2020, 9:54 PM

#

If Im not mistaken, "C:\Program Files\Epic Games\UE_4.23\Engine\Binaries\Win64\UE4Editor.exe" "Yourprojectdirectory.uproject" -client -log is the directory for a quick launch for clients isnt it? Why is it just opening my project normally

twin juniper Jun 15, 2020, 11:27 PM

#

Hey. Im trying to set the visibility of an item. How exactly would I get that to replicate? Here is what I've tried so far.

📎 Screenshot_244.png

worthy knot Jun 16, 2020, 7:16 AM

#

@twin juniper im not sure if you should be using switch has authority

#

Does anyone know if its possible to replicate render targets? is it a thing?

thin stratus Jun 16, 2020, 8:22 AM

#

Not really, no

gusty slate Jun 16, 2020, 11:10 AM

#

Hello :)
What would be the flow to execute something on the current player and all its versions on others clients and server?
For example if I want to ask the server to generate a random color for my player and then apply it on all versions of myself

#

Am I describing a Multicast?

kindred widget Jun 16, 2020, 11:22 AM

#

Maybe. You could achieve it through a Multicast, sure. But if you want to make sure that all players would see that change at all times, such as after logging back in, or after being too far away when the multicast was called, you'd be better off making it a repnotify function. Change a vector with the colors and let the clients change the material parameters on repnotify.

manic pine Jun 16, 2020, 11:23 AM

#

A multicast will run a function on that actor on all computers where that actor is currently netrelevant

gusty slate Jun 16, 2020, 11:24 AM

#

Yes I already have a replicated color variable as I have usage for it on other things. So a RepNotify executes when the variable is replicated? This means that I will have my implementation run every time that variable is changed

#

I see

#

I assume variables get Replicated when a new client is created or when the variable is changed

thin stratus Jun 16, 2020, 11:25 AM

#

You wanna add "When the Variable is changed by the Server."

#

Cause that's the only direction that variable replication works

#

Server -> Client

gusty slate Jun 16, 2020, 11:25 AM

#

Yes indeed

manic pine Jun 16, 2020, 11:26 AM

#

And on the initial replication of the actor or when he becomes netrelevant again

gusty slate Jun 16, 2020, 11:27 AM

#

I see. I am asking the server to generate the random color on BeginPlay if it is a local player and propagate it to all other versions, so I can see that a repnotify makes the multicast a bit redundant

manic pine Jun 16, 2020, 11:27 AM

#

Mind that the repnotify is not fired(automatically) on the server

kindred widget Jun 16, 2020, 11:28 AM

#

As far as I understand it. You change it on the server and the server has a setting for each actor called NetUpdateFrequency. This is how many times per second this actor should be checked for replication. If the variable was different than the last time netupdate was called, it'll send this new variable to all relevant clients and overwrite what they have. If they are repnotify it'll call a function after the new value is set. The notify also happens if the actor becomes relevant to a client for the first time.

manic pine Jun 16, 2020, 11:29 AM

#

That approach wont work, you must check for authority, not localplayer

gusty slate Jun 16, 2020, 11:30 AM

#

I guess authority means that the server version of the Pawn is the one calling the RPC?
And local player the controlling client is the one calling?

manic pine Jun 16, 2020, 11:31 AM

#

Authority is who spawned it, generally the server yes

#

Data replicates from server to clients, not the other way around

gusty slate Jun 16, 2020, 11:32 AM

#

I know, I meant the call to the RPC to generate the Color and apply it

manic pine Jun 16, 2020, 11:33 AM

#

If you replicate the variable then you dont need any rpc

kindred widget Jun 16, 2020, 11:33 AM

#

Are you doing this on beginplay or from a player's input?

gusty slate Jun 16, 2020, 11:34 AM

#

Beginplay

#

I know what you mean raap, using a repnotify and executing this on the server

kindred widget Jun 16, 2020, 11:34 AM

#

Blueprint?

gusty slate Jun 16, 2020, 11:34 AM

#

takes care of things

#

Yes

kindred widget Jun 16, 2020, 11:35 AM

#

On Beginplay, just use SwitchHasAuthority. Use the Authority side, and generate your random vector there and set it.

gusty slate Jun 16, 2020, 11:35 AM

#

With a repnotify, it'll get applied on replication to all clients 👍

#

Thanks for the help guys

kindred widget Jun 16, 2020, 11:37 AM

#

Just a small helper.

#

📎 unknown.png

#

📎 unknown.png

gusty slate Jun 16, 2020, 11:37 AM

#

👍

kindred widget Jun 16, 2020, 11:37 AM

#

📎 unknown.png

#

📎 unknown.png

#

And TestMAT is applied to the character skeletal mesh

#

Well, an instance of it is, but same thing.

gusty slate Jun 16, 2020, 11:39 AM

#

Thank thank you, don't worry 🙂 I just don't have experience with MP yet, but the rest I am fine with

#

raap did mention that Repnotify doesn't get executed on the server?

kindred widget Jun 16, 2020, 11:40 AM

#

It does in blueprint. It does not in C++ by default. In C++ you need to call the same notify function after you set the variable.

gusty slate Jun 16, 2020, 11:40 AM

#

Ah ok I see

#

Thanks for the headsup 🙂

kindred widget Jun 16, 2020, 11:42 AM

#

In blueprint, if you're working with a dedicated server, you might even check if it's running on the server. Since on a dedicated server you don't want to waste resources on setting a material color usually. If it's a listenserver, you can pretty much feel free to treat the server like any other client.

hoary sandal Jun 16, 2020, 12:49 PM

#

Hey guys can you use load stream level, to get a persistent level, I have my menu logic running through a gam instance and since there's no beging play in instances I'm using the level beging play, the problem starts when a client goes back to the menu, the open level is not a latent node so logic keep executing, so I need a way of checking if the level is completely loaded

#

https://i.gyazo.com/d15c779738492701961536aa7aec719b.png

fringe marsh Jun 16, 2020, 3:03 PM

#

Hii, anyone know how to create a widget for a specific player? I have a projectile that kills the player and does a few other things after that, which works fine on all clients, but when I add a widget to the end of the code, it creates it on all clients and not just the one killed.

meager spade Jun 16, 2020, 3:07 PM

#

@gusty slate @manic pine just FYI, blueprint RepNotify fires on server, OnRep in C++ doesn't.

brittle sedge Jun 16, 2020, 3:54 PM

#

Because in C++ you have to call the OnRep function yourself while blueprints take care of this for you.

buoyant wedge Jun 16, 2020, 4:10 PM

#

@wheat magnet thx for the reply 🙂

fading birch Jun 16, 2020, 4:43 PM

#

@fringe marsh get a reference to the killed players controller and create the widget on that.

fringe marsh Jun 16, 2020, 4:55 PM

#

@fading birch how do I get it for the killed player specifically? and do you create it in the playercontroller blueprint?

fading birch Jun 16, 2020, 4:56 PM

#

It depends how you're handling death. If you have a health component you can create a delegate that fires when someone is killed and pass the controller there.

grizzled stirrup Jun 16, 2020, 5:04 PM

#

Why can't custom structs be passed by non const reference in an RPC?

#

Because the client couldn't feasibly pass a reference to the server as they'd have different addresses?

#

So a copy is best on an RPC?

#

If the thing being passed can't be const

fleet raven Jun 16, 2020, 5:05 PM

#

? they can just fine

grizzled stirrup Jun 16, 2020, 5:06 PM

#

I get a compile error if passing my custom struct as a non const & in a Server RPC

#

compiles if const or if not a reference

fleet raven Jun 16, 2020, 5:06 PM

#

ah non const

#

well non const makes no sense

grizzled stirrup Jun 16, 2020, 5:06 PM

#

Yeah but only over the network right?

#

In other cases it makes sense as it's on the same machine

#

So it's not copied

fleet raven Jun 16, 2020, 5:07 PM

#

it's protecting you from writing code that doesn't actually work

grizzled stirrup Jun 16, 2020, 5:07 PM

#

Because the server wouldn't have the memory address that is being passed in?

#

So a copy has to be made over the network?

fleet raven Jun 16, 2020, 5:07 PM

#

because the server can't modify the struct that exists on the client side ...?

grizzled stirrup Jun 16, 2020, 5:07 PM

#

Right 😄

#

Makes sense

#

Thanks!

#

If you had some cases where actors have to edit the results of say a damage struct sent over the net, would you send it as a non const copy and have them work on it directly, or do it const and have them create a new property of that type to make changes to?

#

For example a server RPC might take in a const FMyDamageType& DamageDealt

#

Would you change that to take in FMyDamageType DamageDealt or just create a newFMyDamageType FinalDamageType = DamageDealt in the function that needs to make changes?

fleet raven Jun 16, 2020, 5:10 PM

#

why would a client ever tell the server how much damage should be done?

grizzled stirrup Jun 16, 2020, 5:10 PM

#

PVE game

#

Ignoring cheating

#

And etc.

fleet raven Jun 16, 2020, 5:10 PM

#

I'd just make a copy of the struct I guess

grizzled stirrup Jun 16, 2020, 5:11 PM

#

So you'd pass in FMyDamageType rather than the const version?

thin stratus Jun 16, 2020, 5:11 PM

#

I doubt it matters much, but I usually go for the const &

grizzled stirrup Jun 16, 2020, 5:11 PM

#

And make a new copy later on if needing to change?

fleet raven Jun 16, 2020, 5:11 PM

#

or rather have a new struct containing only the parameters actually relevant to be sent by the client

#

and use that to set up the full one

thin stratus Jun 16, 2020, 5:11 PM

#

Even in a PVE game it sounds like more work to do it client authoritive :D

fleet raven Jun 16, 2020, 5:12 PM

#

well, client authoritative will provide better experience if it is acceptable to use

grizzled stirrup Jun 16, 2020, 5:12 PM

#

Client has to work out a lot of stuff that I don't want to replicate, server just needs to do some adjustments depending on the actor

fleet raven Jun 16, 2020, 5:12 PM

#

you will never have a shot actually miss if the client has authority

novel topaz Jun 16, 2020, 5:12 PM

#

dose anyone know how to open multiple standalone game process ? I use seamless travel in multiplayer game, which not work in single process mode.

thin stratus Jun 16, 2020, 5:13 PM

#

Yeah, I would most likely also do ClientAuth in my next coop game

#

Cause why not /shrug

#

SeamlessTravel doesn't work in PIE.

grizzled stirrup Jun 16, 2020, 5:13 PM

#

Even at really high latency it still feels great for clients, I'd only consider server auth if cheating was any kind of a problem, using client auth movement too so no corrections

thin stratus Jun 16, 2020, 5:13 PM

#

You can just launch multiple process and do it outside the editor

#

Yeah, I hope GAS doesn't force it on me

novel topaz Jun 16, 2020, 5:14 PM

#

do u mean open multiple editor process ?

thin stratus Jun 16, 2020, 5:14 PM

#

no

#

Editor does not support SeamlessTravel

grizzled stirrup Jun 16, 2020, 5:14 PM

#

Write a simple batch file to launch the .uproject file as a game

thin stratus Jun 16, 2020, 5:14 PM

#

you should not connect from one Editor to another

grizzled stirrup Jun 16, 2020, 5:14 PM

#

Then click it a few times for a few clients

thin stratus Jun 16, 2020, 5:14 PM

#

Rightclick your UPROJECT file

#

Hit Launch Game

#

2+ times

novel topaz Jun 16, 2020, 5:15 PM

#

I'll give a try, thank you !

thin stratus Jun 16, 2020, 5:15 PM

#

That's for listen server only though

grizzled stirrup Jun 16, 2020, 5:15 PM

#

"C:\Program Files\Epic Games\UE_4.25\Engine\Binaries\Win64\UE4Editor.exe" "C:\YOURUPROJECTPATHHERE.uproject" -game -log

#

Nice easy batch file to save you the clicks if you do it constantly @novel topaz

novel topaz Jun 16, 2020, 5:16 PM

#

it works, cool !

#

thanks man

grizzled stirrup Jun 16, 2020, 5:20 PM

#

Damn I guess const references are unavoidable

#

You can't pass a TArray of a custom struct type into a server RPC without it being a const ref

#

I'll just make a copy at the other end

novel topaz Jun 16, 2020, 5:30 PM

#

I have watched official multiplayer tutorial on YouTube, where can I find some advanced learning courses ? some suggestion please.

waxen quartz Jun 16, 2020, 6:29 PM

#

I have watched official multiplayer tutorial on YouTube, where can I find some advanced learning courses ? some suggestion please.
@novel topaz udemy has a pretty good one that goes over prediction

shy kelp Jun 16, 2020, 7:42 PM

#

for a save system, should the client directly connect to the webserver and post its data and save bandwidth, or should the client replicate its variables to the gameserver to post its data for increased security?

crude coral Jun 16, 2020, 7:57 PM

#

hello guys

#

i need some help.. 🙂 i make multiplayer 3d android game with unreal 4 and now i am confused about dedicated server how will communicate with my game app in google play store ! i make account with google cloud then i create kubernetes cluster and instance of virtual machine with compute engine too and i activate Agones with Kubernetes then i add the Agones plugin inside my unreal Android game project..and i don't know how add my game server side inside google cloud system

#

NB : there is AWS amazon too but i choose to use google cloud services for my dedicated server

#

but there no tutorials about google cloud game servers so i am confused and i need some help guys

tall cedar Jun 16, 2020, 8:47 PM

#

Hi! What is the proper way to add multiplayer to the top down template? SimpleMoveToLocation obviously does not work on the client. I have seen several solution (mainly using a proxy), but they are all from 2014, so maybe there is better way now? Thank you!

#

Also, not sure if this is the right place to ask.

crude coral Jun 16, 2020, 9:27 PM

#

Lulupard : i think you need make custom event run on multicast for your simple movetolocation event and call that multicast event on custom event run on server

tall cedar Jun 16, 2020, 10:13 PM

#

@crude coral thank you, I'm going to go and try to figure out what that means 😄

unkempt tiger Jun 16, 2020, 10:23 PM

#

can I dynamically change the serverside owner of actors/components (without recreating them ofc) to allow different clients to send out client->server RPCs?

crude coral Jun 16, 2020, 10:39 PM

#

hi guys.. that will help me a lot if you figure out how google cloud server, kubernetes + Agones working for host dedicated game server for the multiplayer android game

#

Agones have plugin for unreal possible you want to look at that so i send you the gihub link of that plugin : https://github.com/googleforgames/agones/tree/release-1.6.0/sdks/unreal the plugin version now is 1.6.0 i add it to my unreal android project game but i don't know how can this plugin will help me for integrate my dedicated game server with google cloud server😆

GitHub

googleforgames/agones

Dedicated Game Server Hosting and Scaling for Multiplayer Games on Kubernetes - googleforgames/agones

gilded vapor Jun 16, 2020, 10:58 PM

#

Does anyone have any performance notes on manually polling anim-notifies vs using delegates?

#

Assuming you are using animations that always expected to fire the same notifies (IE different attack animations) how much faster is the manually polling vs delegate?

unkempt tiger Jun 16, 2020, 11:15 PM

#

anyone know if interfaces can implement RPCs?

gleaming vector Jun 16, 2020, 11:18 PM

#

they can not vioxtar

#

they can define the RPC function, and the implementor of the interface must implement that function as an RPC

#

but they cannot define the RPC themselves

unkempt tiger Jun 16, 2020, 11:26 PM

#

Odd, I was gonna bet it was possible, seeing as UInterfaces can generally offer their own default implementation in non-RPC functions

#

shame, this could have made my organizing a lot easier

crude coral Jun 16, 2020, 11:33 PM

#

hi guys! for multiplayer android game i can build the dedicated server with VS win64 platforme solution ? or there other option for build dedicated game server for Android game?

hearty atlas Jun 16, 2020, 11:35 PM

#

If you are looking at kubernetes, you probably need a Linux dedicated build. There was a guide somewhere.. let me see if i can find it.

#

https://docs.unrealengine.com/en-US/Platforms/Linux/GettingStarted/index.html

Cross-Compiling for Linux

plush wave Jun 16, 2020, 11:36 PM

#

I'm slightly confused on how to create a FUniqueNetId from a string. Why is there no constructor to do this?

crude coral Jun 16, 2020, 11:37 PM

#

@hearty atlas : thank you! but i can build for windows becaude i install docker desktop in my computer and i check hyperV in my windows system ..yes?

hearty atlas Jun 16, 2020, 11:37 PM

#

kubernetes only supports Linux docker containers last i remember

crude coral Jun 16, 2020, 11:37 PM

#

they say kubernetes can comunicate with docker desktop

#

@hearty atlas and i add plugin named Agones inside my plugins project is plugin for unreal

hearty atlas Jun 16, 2020, 11:41 PM

#

ahh actually they added windows support to GKE a couple months ago... neat

crude coral Jun 16, 2020, 11:42 PM

#

@hearty atlas and when i create cluster inside google cloud kubernetes i see it inside my docker desktop

#

yes Antihax

hearty atlas Jun 16, 2020, 11:42 PM

#

you are prob better off reading the Agones docs.. there should be guides to help you set it up

#

https://agones.dev/site/docs/

Agones

Agones Documentation

Documentation and usage guides on how to develop and host dedicated game servers on top of Agones.

crude coral Jun 16, 2020, 11:43 PM

#

for that i need some help for undrestand how if someone download my app (game) from google play store he can comunicate with the dedicated server inside kubenetes+Agones system!

#

@hearty atlas : i read them and i see all tutorials about that but i don't found any tutorials show how integrate the dedicated server of custom game with kubernetes and Agones😫

#

@hearty atlas : my game server is built and ready but i don't know what to do more for integrated it with the google cloud server system

hearty atlas Jun 16, 2020, 11:47 PM

#

you would need to package it into a docker container, then build a kubernetes configuration around it.

crude coral Jun 16, 2020, 11:47 PM

#

yes! and i do that with my desktop docker?

hearty atlas Jun 16, 2020, 11:47 PM

#

https://github.com/googleforgames/agones/blob/release-1.6.0/examples/supertuxkart/Dockerfile this looks like a working example

#

yeah, you would need to make a Dockerfile that builds it, this one is heavily linux though... i have no experience with windows containers.

crude coral Jun 16, 2020, 11:48 PM

#

or with gcloud shell inside my google cloud game server account?

hearty atlas Jun 16, 2020, 11:49 PM

#

local docker, then push it to a repository that your k8s cluster can reach

crude coral Jun 16, 2020, 11:49 PM

#

@hearty atlas :if i build dedicated server for Linux you can help me with that?🙂

hearty atlas Jun 16, 2020, 11:50 PM

#

i wouldn't have time 😦

#

https://github.com/googleforgames/agones/blob/release-1.6.0/examples/supertuxkart this def looks like a good example to look at for what you want to do though

crude coral Jun 16, 2020, 11:51 PM

#

@hearty atlas : i need to pay you for this service?

hearty atlas Jun 16, 2020, 11:52 PM

#

no, i have a full time job and too many hobbies xD

#

that's kinda weird they have an example for everything except unreal

plush wave Jun 16, 2020, 11:59 PM

#

Is there a generic way to get the FUniqueNetId from a string?

crude coral Jun 17, 2020, 12:03 AM

#

@hearty atlas : Thank you so much for your time🙂

unkempt tiger Jun 17, 2020, 12:14 AM

#

is there some kind of max number of RPCs per actor per net update limit?

#

(regular RPCs, not multicast ones)

sand iris Jun 17, 2020, 2:34 AM

#

DOREPLIFETIME_CONDITION(AHVS_Character, Auth_Token, COND_OwnerOnly);

Will the above DOREPLIFETIME condition only replicate the variable to the client, and to the server? I want the Auth_Token to be available only to the client and server but not other players/clients.

fossil spoke Jun 17, 2020, 2:36 AM

#

@sand iris Replicated variables can only be invoked to Replicate when the Server changes their value, so the Server will always have the most correct value.

#

COND_OwnerOnly will replicate the value change to the owning connection. In this case, yes it will only replicate the value to the Client that owns that Actor.

#

Clients that are simulating that Actor will not receive the value change.

sand iris Jun 17, 2020, 2:45 AM

#

I see, thanks!

winged badger Jun 17, 2020, 2:53 AM

#

also @sand iris , unlike BP, OnReps do not get called on server in c++

somber glade Jun 17, 2020, 3:33 AM

#

before joining a 1:1 peer MP session, my clients will choose a profile and set some other values (like an avatar) what's the best way to pass that information to the game mode on the host after they join?

fading birch Jun 17, 2020, 3:35 AM

#

@somber glade use the player state.

#

or a sav file and have the client send that.

#

(the data that is)

somber glade Jun 17, 2020, 3:36 AM

#

The profile information is currently managed in the game instance (since it normally should persist through level changes). should I use the controller on begin play when it joins the map to call to the playerstate, execute a server function and set the value there?

fading birch Jun 17, 2020, 3:37 AM

#

well, you can store it in the game instance, but you can just store all that data in the player state, even when you're not connected, and just make sure you set it in your Copy Properties override.

#

and just have the client send it to the server once it connects.

somber glade Jun 17, 2020, 3:42 AM

#

player state is wiped on each level load though isn't it?

fossil spoke Jun 17, 2020, 4:01 AM

#

@somber glade Are you using C++ or Blueprint?

#

You can append "Options" to the OpenLevel function that will have those Options passed to the GameMode during Login.

#

UGameplayStatics::OpenLevel(GetWorld(), ServerAddressForConnection, true, FinalOptions);

#

So like FinalOptions might be a FString where it equals.

#

?SelectedCharacter=Mage

#

This string will be passed into AGameModeBase::Login

#

Which you can then choose to do stuff with.

somber glade Jun 17, 2020, 4:04 AM

#

No, not that kind of avatar. Player will have various models, skins, etc unlocked, so those specific values need to be passed from the local player to the server

fossil spoke Jun 17, 2020, 4:05 AM

#

... Thats exactly what this does.

#

?Hat=TopHat?SkinColor=White?TShirtSize=Small

#

Whatever you want.

somber glade Jun 17, 2020, 4:05 AM

#

?SelectedCharacter=Mage sorry that didn't quite look like what I was describing.

#

I see okay, I haven't played with that options string yet.

fossil spoke Jun 17, 2020, 4:06 AM

#

You can then parse these Options to get their values.

fleet raven Jun 17, 2020, 4:06 AM

#

you can send whatever you want through there, even arbitrary data if you encode it

fossil spoke Jun 17, 2020, 4:06 AM

#

You choose how to interpret it.

fleet raven Jun 17, 2020, 4:06 AM

#

the url can be multiple MB I think

#

I remember seeing a comment where someone was complaining about too big fortnite join urls

fossil spoke Jun 17, 2020, 4:07 AM

#

They must send all customization data through Options then...

somber glade Jun 17, 2020, 4:08 AM

#

This project was previously set up with blueprints, it looks like the only login event is "onpostlogin". But the game mode doesn't have too much in it, so I can probably convert that to C++ if it isn't possible to expose that function

fossil spoke Jun 17, 2020, 4:09 AM

#

OnPostLogin is the only login event exposed to Blueprint.

#

It shouldnt be difficult to override the AGameModeBase::Login function and expose it to blueprint through a BlueprintImplementableEvent

somber glade Jun 17, 2020, 4:10 AM

#

Yeah, i'm just creating a child class of Gamemodebase right now

#

Other MP stuff I've done has had the player choose everything after joining the MP session (player name just came from their steam profile). I wasn't sure what the standard practice was for passing information like this to the server on join.

fossil spoke Jun 17, 2020, 4:13 AM

#

We save out customization data to PlayerData on an external service. We get the Server to pull down that data (which is just JSON) when the Player joins (we hold them behind a loading screen until its correctly pulled down and verified by the Server).

#

The Player has "Loadouts", they just send the loadout index to the Server and the Server handles spawning them correctly with all their gear.

somber glade Jun 17, 2020, 4:14 AM

#

We aren't going to have any central servers or anything in this. Just local player unlocks, and when deciding to play against a friend they'll be able to choose from what they've unlocked before joining.

fossil spoke Jun 17, 2020, 4:15 AM

#

Fair enough, there is always the concern of cheating with locally held data like that.

somber glade Jun 17, 2020, 4:15 AM

#

it's just models and skins. Won't really affect game play.

fossil spoke Jun 17, 2020, 4:15 AM

#

But if thats not a concern for you then all good.

#

👍

somber glade Jun 17, 2020, 4:15 AM

#

If someone wants to try and hack the save to unlock everything, they can do that.

#

(
    UPlayer * NewPlayer,
    ENetRole InRemoteRole,
    const FString & Portal,
    const FString & Options,
    const FUniqueNetIdRepl & UniqueId,
    FString & ErrorMessage
) ``` the only thing I really need to pass on is the options right? just call the parent function, then call a BP implementable vent that would pass on those options?

fleet raven Jun 17, 2020, 4:22 AM

#

yeah

#

and if you set the error message the join will be rejected

fading birch Jun 17, 2020, 4:22 AM

#

@somber glade sorry I got a bit caught up in what I was working on.

fleet raven Jun 17, 2020, 4:22 AM

#

(and the client can see the message)

fading birch Jun 17, 2020, 4:23 AM

#

player state is wiped on each level load though isn't it?
That's why I said use Copy Properties. That transfers the values over when you travel.

fleet raven Jun 17, 2020, 4:25 AM

#

(only when using seamless travel)

fading birch Jun 17, 2020, 4:25 AM

#

true

somber glade Jun 17, 2020, 4:26 AM

#

Not getting into seamless travel here, this is a fairly basic peer to peer setup

fading birch Jun 17, 2020, 4:26 AM

#

tbh seamless travel isn't super complicated

#

it's literally a bool

#

however, I believe when you connect to another server, it forces non seamless travel

fleet raven Jun 17, 2020, 4:26 AM

#

assuming you haven't made anything custom that breaks it that is

fading birch Jun 17, 2020, 4:27 AM

#

yeah that's true

#

it can complicate flow as well

fleet raven Jun 17, 2020, 4:27 AM

#

if I enable it the game just crashes ✅

fading birch Jun 17, 2020, 4:27 AM

#

since begin play doesn't necessarily get fired when you load in

somber glade Jun 17, 2020, 4:48 AM

#

Well i got it overridden and successfully implemented. I'll have to work up a system to pass useful stuff through there, but it should work.

fossil spoke Jun 17, 2020, 4:50 AM

#

@fleet raven What on earth did you change to break seamless travel?

fleet raven Jun 17, 2020, 4:51 AM

#

something related to my custom network channel for brick replication

fossil spoke Jun 17, 2020, 4:51 AM

#

Bricks?

#

As in building block Bricks

fleet raven Jun 17, 2020, 4:51 AM

#

yes

fossil spoke Jun 17, 2020, 4:51 AM

#

Right

fleet raven Jun 17, 2020, 4:52 AM

#

https://brickadia.com/blog/optimizing-bricks-for-alpha-5-part-1/ these bricks

fossil spoke Jun 17, 2020, 4:55 AM

#

Looks like minecraft

#

👍

somber glade Jun 17, 2020, 4:55 AM

#

I had seamless travel crashing every time last year. put like 50 hours over 3 days with several people from the discord here trying to trouble shoot it and no one could figure out what was wrong and why it was crashing. Ended up giving up and making a "fake" lobby on the map for all the players to get together on.

fleet raven Jun 17, 2020, 4:55 AM

#

that specific build is quite... cubic yes

#

player who made it used lots of boxy bricks

gleaming vector Jun 17, 2020, 7:05 AM

#

wow zeblote

#

that looks awesome

bitter swift Jun 17, 2020, 10:03 AM

#

Hello Unreals! As shown on this picture I'm having a strange replication issue. My guns fire projectiles just fine... But only after the server has peeked at a client. After that, the client fires optimally even if the server turns away again. Is this a known issue and is there a fix to it?

📎 Capture.PNG

twin juniper Jun 17, 2020, 10:09 AM

#

Someone used Photon as Networking in the past? Cant find a good documentation for using Photon Networking with UE4

bitter swift Jun 17, 2020, 10:14 AM

#

Hello Unreals! As shown on this picture I'm having a strange replication issue. My guns fire projectiles just fine... But only after the server has peeked at a client. After that, the client fires optimally even if the server turns away again. Is this a known issue and is there a fix to it?
@bitter swift
I have found out what the issue is. It's because the Animation for the Character Mesh is not replicated properly. The Character is hanging the gun down by default when it's Idle and that is why the Server thinks the tip of the gun is elsewhere, because it does not recognize that the client is using an Aiming Animation. The server only recognizes this after it has looked at the client and confirmed it's animation.

winged badger Jun 17, 2020, 10:44 AM

#

in case of dedicated server, the skeleton ticking is off by default

#

FPS games tend to require client authority for shooting as not to feel clunky and unresponsive

#

with client determining the hit, spawning its own projectile locally, and RPCing it to the server, which does some sanity checks that the client could had made that shot

fringe marsh Jun 17, 2020, 11:30 AM

#

It depends how you're handling death. If you have a health component you can create a delegate that fires when someone is killed and pass the controller there.
@fading birch I have created a health variable in the player character and I created the death function in a bullet blueprint. Is a delegate another function?

chrome bay Jun 17, 2020, 12:15 PM

#

Anybody know if actor components work on beacons?

safe spade Jun 17, 2020, 1:29 PM

#

Is there any reference that shows how big different variables are when replicated, or compares frotator vs fquat or regular vector vs netquantize vector?

fleet raven Jun 17, 2020, 1:46 PM

#

yes, use network insights

#

📎 18b63d14-5b18-4914-9ccc-ec66fd260cab.png

#

it'll show you a graph like this for every packet

#

the vast majority of things that can be sent are fully marked up

safe spade Jun 17, 2020, 1:53 PM

#

yes, in this case I'm thinking more ahead of time, planning/architecting a solution that might be difficult to change so knowing the sizes up-front might allow for a more efficient design

fleet raven Jun 17, 2020, 1:54 PM

#

in that case no, you'll have to use intuition and look at the code

#

for example FVector -> 3x float -> 12 bytes

safe spade Jun 17, 2020, 1:55 PM

#

do you know offhand rotator vs quat, or are they all just sent as quats due to how they are internally anyways?

#

or things like bool vs byte

fleet raven Jun 17, 2020, 1:55 PM

#

bool is 1 bit, byte is 8 bit

#

rotator serializes as 3 bit flags + 16 bit data per component that is not 0

#

quat serializes as 3x float

safe spade Jun 17, 2020, 1:58 PM

#

you should totally keep going and copy/paste it into a reference doc, or keep going and I'll copy/paste it to a reference and give you credit 🙂

fleet raven Jun 17, 2020, 1:59 PM

#

enums serialize with however many bits are necessary to fit their max value

#

FVector_NetQuantize are weird because they decide how many bits to use dynamically so the size changes depending on the value

safe spade Jun 17, 2020, 2:03 PM

#

this is all super useful info!

fleet raven Jun 17, 2020, 2:06 PM

#

FVector_NetQuantizeNormal is 3x 16 bit, FVector_NetQuantize[xxx] will be 5 bit + 3 * log2(max value * [xxx] * 2)

safe spade Jun 17, 2020, 2:07 PM

#

Long story short for me is trying to design replication for multiplayer VR. Each player has location and rotation, but also location and rotation for head and both hands. I THINK my plan is to have owner pawn do tracking and simulate appropriate movement and IK, as well as upload the more accurate tracking info to the server, which would then calculate the same movement and IK, then multicast lower-precision versions of that to all the clients (including owner). Then all the non-owner clients can simply accept those close-enough values (nobody will notice 1mm) and the owning-client can perform any drift corrections as needed.

fleet raven Jun 17, 2020, 2:10 PM

#

sounds like a plan

#

though I'm not sure about that drift correction

safe spade Jun 17, 2020, 2:11 PM

#

yeah me either

fleet raven Jun 17, 2020, 2:11 PM

#

if VR movement doesn work exactly as the player expects it to, they will just get sick

#

so maybe need client authority there

safe spade Jun 17, 2020, 2:11 PM

#

exactly, perhaps I explained it poorly, that's why I'm planning to let the client be semi-authoritative on their own movement and tracking

#

I'd still send the tracking info to server so it can check for cheating or invalid situations

#

but generally I'd like the owning client do their own thing

#

drift correction could possibly even done bizarro-style on the server instead of the client

fleet raven Jun 17, 2020, 2:14 PM

#

could allow them to have full authority within some maximum reasonable bounds

#

i.e. no one with a headset can move 1 meter to the side in 0.05 seconds

safe spade Jun 17, 2020, 2:15 PM

#

yeah, I'd normally never trust the client but in this case with VR I think it's (at least currently) more difficult to simulate input to cheat than it is to detect invalid or simulated inputs

#

but also my movement setup is much more restricted than, say, Echo VR

#

ie running around in your play space doesn't cause your character to move around in-game

fleet raven Jun 17, 2020, 2:16 PM

#

you mean like the camera doesn't move either?

safe spade Jun 17, 2020, 2:17 PM

#

camera does but not player, in Echo VR your tracking/head is player root so moving in real life moves your character beyond the limits of your character speeds and agility

#

in my version your player root is your character waist, limited by character speed and agility, and your character head is tracking

#

but... if your real-life head starts to move outside the bounds of your character (ie move farther than your character can IK lean) I actually offset tracking root in opposite direction so your camera can't extend past your character head in-game

#

surprisingly not sickening at all

#

it feels normal

fleet raven Jun 17, 2020, 2:18 PM

#

interesting

safe spade Jun 17, 2020, 2:19 PM

#

I think I have a small video let me check

fleet raven Jun 17, 2020, 2:19 PM

#

I've not messed around much with vr controls myself

#

but the motion sickness stuff is definitely a real issue

#

like I can't use the non-teleport controls in hla, it makes me feel like I'm falling over instantly

safe spade Jun 17, 2020, 2:21 PM

#

have you been able to try Echo VR on oculus?

fleet raven Jun 17, 2020, 2:21 PM

#

nop haven't played that yet

safe spade Jun 17, 2020, 2:22 PM

#

that zero-g control method works fairly well because you're controlling your free character movement with your real hand movements

#

so you're actively doing something that makes sense to your brain, not just pushing a joystick

#

anyways have to go do real work, will check out this replication sizes when I get back and see what I can come up with thanks!

trim kindle Jun 17, 2020, 2:44 PM

#

Is there a way how to make AddMovementInput work even with unpossessed player in multiplayer?

#

I have bunch of pawns which can be controlled directly by gamepad but do not actually belong to any player

#

The reason for that is player can control multiple pawns with gamepad at once

#

and possess is possible only for single pawn, so they can't be possessed

#

and doing RPC with player's input on every tick does not feel right for me. Maybe I am mistaken and it is not that performance heavy.

real cedar Jun 17, 2020, 2:49 PM

#

I'm looking at starting to test my project with some friends, and I'm wondering what other people use for multiplayer testing. Do you just run it right off your computer and open up the ports, or do you use hosting services, or if there are even any free development services?

#

I have hosted it right off my computer and it has been more of a struggle it seems like to get it to actually work that way as I've only had 1 successful test out of a few attempts. I'm sure it was port forwarding issues.

warped stream Jun 17, 2020, 3:07 PM

#

I personally use (if your computer / network is strong enough) my personal or work computer, if I want to test the game. Although, mostly I let a friend host because I can feel the "delay" and stuff for myself

real cedar Jun 17, 2020, 3:09 PM

#

That is a good idea too. I didn't think about letting them host for that reason.

With port forwarding then, did you need to constantly chance which ports were forwarded or is there a way to make the ports that the engine uses to static ones? @warped stream

warped stream Jun 17, 2020, 3:10 PM

#

I don't know how unreal handles the ports. But maybe you can use a cmd parameter upon startup of the server.
If not, a tunneling service like hamachi should do the trick

real cedar Jun 17, 2020, 3:12 PM

#

Oh ok. Yeah because I've opened up Resource Monitor to get me all the ports that the engine was using and it seemed like they change each time. I will check those out though. Thank you.

echo rivet Jun 17, 2020, 3:12 PM

#

In Character Actor. I am having problems with the replication of capsule Relative Location and VrOrgin scene where the camera is. Basically, it works fine offline but for some reason, I can not manage to replicate it.

📎 tick.jpg

orchid pollen Jun 17, 2020, 3:13 PM

#

how are your node connections so straight hah

echo rivet Jun 17, 2020, 3:15 PM

#

@orchid pollen 😆 it is not the answer that I am looking for. And you are not the 1st person who did ask so, just check plugin on MP "Electronic Nodes"

plush wave Jun 17, 2020, 3:40 PM

#

I'm confused on how to create a FUniqueNetIdRepl from a string?

vernal light Jun 17, 2020, 3:49 PM

#

Hello I am new here...I wanted to ask for a way to replicate my animations cause what ever I try ,the other player pawns on the screen copy locally the animation I play... let me send a video hold on

final thicket Jun 17, 2020, 4:25 PM

#

Does anyone know if you can, specifically not use an online subsystem while connecting to a server? Lets say that I have the steam online sub system but I'm connecting to a server that I know is not running that subsystem can I just disable it and go with the default just while connecting with that server?

#

Because I would like the Steam online sub system for logging into our matchmaking with playfab, and making a listen server lobby to matchup with players on your steam friends list, but when connecting to the playfab matchmaking server I would like to discard the OnlineSubSystem, so that there is no miss match when trying to connect to the server

final thicket Jun 17, 2020, 4:48 PM

#

Well I don't really need any of the steam subsystem features on the server

#

People won't find it on a server list or anything, additionally I have been struggling to get it to work 🙂

rich hare Jun 17, 2020, 5:08 PM

#

ping me for an answer
when i use stat net in the debug command menu (`), is the in/out rate calculating the bandwidth per frame or per second?

spark fossil Jun 17, 2020, 5:34 PM

#

Does anyone have experience with using a listen server for more than a few players? I guess performance will vary wildly depending on the specifics, but has anyone used it for 20+ players?

supple vapor Jun 17, 2020, 6:46 PM

#

@final thicket i've been stuck with the same problem 🙂

#

i just want steam authentication and friend list and rest I have my own system

#

but its forcing me to use 'SteamNetDriver' and that prevents from opening level with 'ip address:port'

#

anyone has a work around?

rich hare Jun 17, 2020, 6:51 PM

#

@supple vapor and @final thicket from my knowledge, an online subsystem is used as a middleware to find people around the world running the same game as you. from what it seems you want to use a separate subsystem other than steam for hosting servers. I use steam as well and you can add your own dedicated servers in the steamworks app page for your game

#

personally i have not used dedicated servers

#

you can add them under steamworks > app admin > gamename > application > dedicated servers

#

or in /apps/dedicatedservers/steamappid for the steamworks website url

supple vapor Jun 17, 2020, 7:29 PM

#

it's a ploy by steam to force people to use their ecosystem 🙄

#

has nothing to do with 'security' like Steam is saying, they just don't want other services like amazon, gamesparks etc to work with theirs

#

i found a solution by scrolling above

#

apparently you can set OnlineSubSystem=Null which will mean your game uses the default ipnetDriver

#

but you can still directly access the steam OSS (not through interface) and get all the functions

#

solution was posted by - DevilsD - Matt Boatswain if anyone's curious

crude coral Jun 17, 2020, 7:43 PM

#

Hello Guys

#

for android multiplayer game; google play store not support multiplayer game now and they have solution for the multiplayer with Kubernetes and Agones..i want ask if someone have idea how Kubernetes + Agones working and how integrate the dedicated server of the app there with google cloud server services..

proven axle Jun 17, 2020, 8:09 PM

#

I'm currently stuck with my multiplayer implementation for my game, I have replication 100% working, but only within a 100 km radius of the origin. I have multiplayer origin rebasing turned on, and I have my pawn request a new origin every 10 km. I utilize RebaseLocalOriginOntoZero and RebaseZeroOriginOntoLocal for my movement replication, which works great until I hit that 100 km wall. Clients and the listen server can both travel beyond that boundary, but clients don't recognize that the listen server can actually travel beyond it.

📎 SpaceSim_Preview_NetMode__Client_2_64-bit_Windows_2020-06-17_14-01-56_Trim.mp4

#

I can travel hundreds of km away, and my listen server knows the correct location of the client, but the client doesn't know the correct location of the server. If both fly back to the origin, the replication begins working again

#

I'm not needing HUGE levels, just around 400km radius or so, and hoping I can get the replication working for that

crude coral Jun 17, 2020, 8:25 PM

#

Hello Guys
for android multiplayer game; google play store not support multiplayer game now and they have solution for the multiplayer with Kubernetes and Agones..i want ask if someone have idea how Kubernetes + Agones working and how integrate the dedicated server of the app there with google cloud server services..

#

#mobile message

chrome bay Jun 17, 2020, 8:27 PM

#

@proven axle 400KM is insanely huge

#

physics starts to break down around 2km from origin.

#

Also bear in mind that the Server is always operating in zero-origin space

#

Only the clients are rebased

proven axle Jun 17, 2020, 8:28 PM

#

Even with origin rebasing? I don't really plan to use physics anyways

crude coral Jun 17, 2020, 8:28 PM

#

the character play coffin music on the main menu of my multiplayer android game

📎 video-1589726407.mp4

chrome bay Jun 17, 2020, 8:29 PM

#

Origin rebasing will help but you will likely still need to update your internal movement calculation to doubles-precision.

#

But as I said, the Server doesn't benefit from origin rebasing

#

It's not really that useful in MP, aside from reducing visual glitchyness on the clients.

proven axle Jun 17, 2020, 8:30 PM

#

Ok, I'll do that. But I'm not sure using double precision in just my movement component code will do the trick. The listen server hitting that literal wall feels like a hard limit in the engine code somewhere.

chrome bay Jun 17, 2020, 8:30 PM

#

There is a hard limit somewhere yeah

#

EngineDefines.h

#

WORLD_MAX is "2097152.0"

proven axle Jun 17, 2020, 8:31 PM

#

Ah, so I can bump that up, but I will likely run into issues elsewhere

chrome bay Jun 17, 2020, 8:31 PM

#

almost certainly yep

#

You'll need to scale things down pretty dramatically to have it working reliably

proven axle Jun 17, 2020, 8:33 PM

#

It was my understanding that scaling everything down still had precision issues, but maybe not as bad?

chrome bay Jun 17, 2020, 8:34 PM

#

The issue comes from multiplying small numbers by large ones, that's where the precision starts to breakdown - but unless the movement is particularly complicated moving to doubles won't help much

#

Scaling down doesn't really have precision issues AFAIK, but it depends how far you go

#

I certainly wouldn't be trying 400Km at 1uu = 1cm though.

crude coral Jun 17, 2020, 8:34 PM

#

@chrome bay the dedicated server have the same problem with origin or no?

chrome bay Jun 17, 2020, 8:35 PM

#

same problem yep

#

Server can't be rebased

proven axle Jun 17, 2020, 8:35 PM

#

I'll have to give that a try then. Thanks! Here's to hoping UE 5 uses double precision 🙏

chrome bay Jun 17, 2020, 8:35 PM

#

I can pretty much guarantee UE5 won't use doubles

#

But yeah RE rebasing - the server would have to somehow handle two clients being on opposite ends of the world, which ofc it can't do.

#

400km = 40,000,000 unreal units

proven axle Jun 17, 2020, 8:37 PM

#

Yeah, that's why I'm breaking up solar systems into separate levels, and requiring everyone playing co-op to travel at the same time. I just thought I could get away with those distances in a single map

crude coral Jun 17, 2020, 8:37 PM

#

i create my main map with world composition with 7 by 7 submap

#

7x and 7y

chrome bay Jun 17, 2020, 8:38 PM

#

https://docs.unrealengine.com/en-US/Engine/LevelStreaming/WorldBrowser/index.html#bigworldsandmultiplayer

#

^ Not supported in multiplayer, according to "official" docs.

crude coral Jun 17, 2020, 8:38 PM

#

so how work with pubg?

chrome bay Jun 17, 2020, 8:38 PM

#

Huge worlds and MP is not straightforward

crude coral Jun 17, 2020, 8:39 PM

#

pubg is unreal game too

chrome bay Jun 17, 2020, 8:39 PM

#

No idea how PUBG handles it.

shadow aurora Jun 17, 2020, 8:39 PM

#

Would someone potentially be able to help me out with loading this class in the multiplayer mode for my game? I'm currently getting an EXCEPTION_ACCESS_VIOLATION whenever I attempt to access a TSubclassOf that I've set in the blueprint version of my class. UE4Editor_OnlineSubsystemUtils is mentioned in the crash summary so I'm thinking it's an issue with replication...

proven axle Jun 17, 2020, 8:39 PM

#

So you think if I go with 1u=1m I should be good?

#

That should theoretically give me 1000 km to play with

#

pubg is only 8km x 8km

chrome bay Jun 17, 2020, 8:41 PM

#

FYI @crude coral we have 4*4km maps (so 2km max from origin) and we started to see visual glitches around 1.5k from origin. 8x8 is probably doable. We're not using world composition though.

#

Just make sure the origin is in the middle of the map.. not the corner

#

Still not sure why UE creates landscapes like that.

crude coral Jun 17, 2020, 8:42 PM

#

@chrome bay in the link you send it from unreal document they talking about solution : Implement some layer between clients and unreal dedicated servers which will transform shifted absolute positions from the clients and route them to the right dedicated server, which only holds part of the world where client is

chrome bay Jun 17, 2020, 8:43 PM

#

Just remember that the Server has to have the entirety of the map loaded at once, so you can't go too crazy anyway

#

Yeah, so they're talking about having multiple servers manage one game - so a custom server architecture

proven axle Jun 17, 2020, 8:44 PM

#

@crude coral You could look at a solution like this: https://improbable.io/multiplayer-networking

Improbable

Multiplayer Networking

Use our managed networking stack for real-time multiplayer games: create multiplayer games that push the boundaries of what game engines can do.

crude coral Jun 17, 2020, 8:46 PM

#

@chrome bay so clients when try to play can find them self in the space without landscape?

chrome bay Jun 17, 2020, 8:47 PM

#

Clients should be fine, it's the Server that's the problem child.

#

Server needs to keep the entire map loaded always.

#

Clients can just load the section they're in.

#

YOu need to manually handle origin rebasing everytime you send any info between Server and Client too, it doesn't do everything automatically (only movement)

#

Once you get the hang of it it's not too bad

#

But you will always run into precision issues in MP eventually, because the Server is always working in zero-origin space.

#

Also some advice - shift the origin by something like 50 meters all the time, it'll help you find rebasing issues faster.

crude coral Jun 17, 2020, 8:49 PM

#

@chrome bay : ok ! i have question! you know how kubenetes + Agones (google cloud server services) work? is like AWS game lift services but is new from google

chrome bay Jun 17, 2020, 8:49 PM

#

no idea

proven axle Jun 17, 2020, 8:50 PM

#

Yeah my flight and code that handles firing my guns does the origin rebasing, and works within the world max bounds

crude coral Jun 17, 2020, 8:51 PM

#

@chrome bay this my map

📎 Tittre02.PNG

#

Android game

📎 zip.PNG

#

📎 Zipline5.PNG

chrome bay Jun 17, 2020, 8:52 PM

#

@twin juniper not sure RE the question but FYI the network uses FNetBitWriter and FNetBitReader archives for net serialization

#

I think FArchive is an abstract type

#

@crude coral 8x8km map on android? That's brave..

#

Have you considered something easier :D?

crude coral Jun 17, 2020, 8:54 PM

#

i make it with world composition and i delete my old single map because with my old map i found lot lag but now all work seamless and no lag

#

i test it with my phone and run good

#

@chrome bay my world composition map (more big) working more better than my old standard map (small)

#

@chrome bay and i make zipline system inside the map for the players not walking so much between locations🙂

chrome bay Jun 17, 2020, 9:05 PM

#

@twin juniper what I mean is that the base FArchive will work but it is sub-typed quite a lot accross the engine for specific use-cases, the networking one is the FNetBitWriter/Reader

#

Just serializing a UObject pointer or an FName for example won't work without a package map and the network archive types.

#

You'll also need to use the specific network-connections' package map you are sending the data too, as they are unique per-client/connection.

gleaming vector Jun 17, 2020, 9:19 PM

#

unreal engine creates a connection object

#

yes, it uses udp sockets, but has a higher level control structure (UNetConnection) to manage communication

crude coral Jun 17, 2020, 9:21 PM

#

@proven axle : spatialos is for unreal pc multiplayer and not for unreal android multiplayer purpose

halcyon totem Jun 17, 2020, 9:44 PM

#

I heard a Unreal Teacher once say to stay away from multicast, you dont see multicast being used in high end games is this true?

polar lotus Jun 17, 2020, 9:49 PM

#

For some reason, the physics bodies of my gun are discombobulated on the client

#

📎 unknown.png

#

it looks regular on the server

#

they are not supposed to independently simulate physics

#

Its supposed to look like this

#

📎 unknown.png

slate veldt Jun 17, 2020, 9:52 PM

#

Hi all, having an issue with the client's set view target. It works initially, and then seconds later it seems to get overriden. The server doesn't correct this does it?

polar lotus Jun 17, 2020, 9:52 PM

#

it shouldnt

#

You should always set the view target on the client

#

never the server

slate veldt Jun 17, 2020, 9:56 PM

#

That's what I thought - however, taking a look through the c++ of how SetViewTargetWithBlend works, I've spotted that the Server actually calls a client RPC (reliable) to set the view target

#

{
....
if (PendingViewTarget.Target != NULL)
        {
            if (!PCOwner->IsPendingKillPending() && !PCOwner->IsLocalPlayerController() && GetNetMode() != NM_Client)
            {
                PCOwner->ClientSetViewTarget(NewTarget, TransitionParams);
            }
        }
....
}

#

Doesn't look like it's replicated or has any server correction though, it's literally just that RPC as far as I can tell

cosmic trail Jun 17, 2020, 10:01 PM

#

anyone know what a good target max bandwidth is for an online multiplayer game between 5v5 players? Not sure what to target, 50kbps? 100?

late bluff Jun 17, 2020, 10:04 PM

#

@slate veldt I had a similar problem with set view target. I could solve mine by telling the controller to not automatically manage the player camera, but unsure if that would help you.

slate veldt Jun 17, 2020, 10:06 PM

#

Not really sure that'll be helpful in this particular situation.

I've just changed it so that the Server assigns the view target. It's behaving the exact same as before, it views the blend target, and then it changes to another view at (0,0,0) moments later

late bluff Jun 17, 2020, 10:07 PM

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That sounds identical to the issue I had. Then again, I've encountered different issues with the same effect before

fossil veldt Jun 17, 2020, 10:43 PM

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Guys what is the most efficient way to send requests like respawning and vote kick to the server from the client? Would you just run on server RPC via the playercontroller and then cast to gamemode?

slate veldt Jun 17, 2020, 10:45 PM

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Yeah most likely!

fossil veldt Jun 17, 2020, 10:46 PM

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oh ok neat, ty

slate veldt Jun 17, 2020, 10:50 PM

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@late bluff I've figured out the problem. Due to my gameflow, I was having a player join, and on PostLogin of the game mode I was creating a spectator pawn for them at 0,0,0, but then settin their view target to the respawn style screen. Problem is, there is a bit of a race condition as to which gets there first, so the view target was being set first, and then the spectator pawn info was arriving second and taking view target priority.

I've reworked the flow, allowing the default pawn process to spawn a spectator pawn, moving the logic to tell the client to go to the "respawn style screen" onto the "OnRestartPlayer" K2 event.
This was how I should have set it up anyways really. However, it doesn't resolve the issue, but if I set a delay on the server before setting the new view target, it gives it time to set to the spectator pawn, and then the delayed set kicks in and sets it to thecorrect view.

I've got a custom "On Possessed" event on the Client, so I'll check there if the new pawn is a spectator pawn. If it is, then do the view target stuff again... Hopefully that will mean very minimal/no camera issue, but I'm sure I'll stumble into a problem

shadow aurora Jun 17, 2020, 10:51 PM

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I hate to keep beating a dead horse by asking, but I am really struggling with this for some reason. Does anyone know the best way to load a UClass/TSubClassOf at runtime inside a Server RPC? I just keep getting an access violation any time I try to do it, even though I know that it's pointing to the right class.

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Essentially I need to swap the AI Controller of a pawn from it's default controller somewhere in this function

cosmic trail Jun 17, 2020, 10:58 PM

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you want to use a new class for the AI controller?

shadow aurora Jun 17, 2020, 10:59 PM

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Yep. Some quick background is that there are tamed and wild monsters in our game. Just want to be able to change their AI controller based on what their status is basically.

cosmic trail Jun 17, 2020, 11:00 PM

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why does it need to be an RPC..

shadow aurora Jun 17, 2020, 11:00 PM

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Doesn't necessarily have to be. I had done it that way in a different project and it seemed to work there... But all of a sudden in this new project I just keep getting an access violation

cosmic trail Jun 17, 2020, 11:00 PM

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though I seem to send subclass of just fine.. do you know where you're getting the access violation? Maybe it's not the RPC's fault?

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is the class defined in C++? Can you hardcode the StaticClass() to see if there's somethign else failing?

shadow aurora Jun 17, 2020, 11:01 PM

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Hmm yeah I'll go ahead and try that

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I'm specifically seeing the access violation when trying to call LoadSynchronous and the error log contains some stuff about OnlineSubsytemUtils so I figured it was somehow related to the RPC.

cosmic trail Jun 17, 2020, 11:02 PM

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code for RPC?

shadow aurora Jun 17, 2020, 11:04 PM

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if (GetLocalRole() == ROLE_Authority)
{
this->Sidekick->GetController()->UnPossess();
this->Sidekick->AIControllerClass = SidekickAIControllerClass.LoadSynchronous();
this->Sidekick->SpawnDefaultController();
}

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Nothin too fancy

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Like I said, had this exact function in another project and it worked perfectly :/

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Yeah even using AAICSidekick::StaticClass() caused an access violation... Really not sure what to do here haha...

cosmic trail Jun 17, 2020, 11:09 PM

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I can give you a potential workaround..I don't usually pass like that so I'm not sure

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oh hmm static class..

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yeah not sure there then

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I also change the default controller..I may have encountered this...which is why I do it during a deferred actor spawn....

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but you said you've done it before dynamically...

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so I'm not sure either..

shadow aurora Jun 17, 2020, 11:10 PM

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Hmmm I could definitely try to use a deferred actor spawn and see if that fixes it. Just so weird that it's specifically in this project. I've gone over the settings in both projects to double and triple check that they're the same and they are.

cosmic trail Jun 17, 2020, 11:10 PM

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Mine, I check whether I want to spawn an AI controlled or player controlled actor, and do it with a deferred spawn

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I mean check where you 're getting the access violation?

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what's null etc?

shadow aurora Jun 17, 2020, 11:11 PM

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Yeah I'm gonna try and dig in a bit deeper to see where it's going wrong

cosmic trail Jun 17, 2020, 11:11 PM

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so if it's an RPC problem though...you can take a look at thsi

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https://www.reddit.com/r/unrealengine/comments/azz248/calling_a_netmulticast_function_to_change_the/

r/unrealengine - Calling a NetMulticast function to change the anim...

1 vote and 2 comments so far on Reddit

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maybe bundle the Tsubclass of in a Uobject that has replication

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and send that uobject over

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very weird workaround

shadow aurora Jun 17, 2020, 11:12 PM

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Yeah I'm sure it'll take some weird workaround like that

cosmic trail Jun 17, 2020, 11:13 PM

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or if ur doing it server->client, can just follow the on-rep instructions in that post

shadow aurora Jun 17, 2020, 11:13 PM

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Tried that as well with the same result 😭

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Something must be horribly wrong somewhere haha

cosmic trail Jun 17, 2020, 11:15 PM

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ok my thought is it's not the RPC just maybe that spawn default controller

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I dont' quite remember why I had to do deferred spawn haha...but it must have been something weird like that otherwise I'd just set it directly

edgy dagger Jun 17, 2020, 11:22 PM

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hello. some questions, what would be the major drawbacks if we build the server in development for real production players. (hosted on gamelift), vs having a shipping server build? and will the debug prints slow down the server because there is alot of them? and finally will i be able to pull logs from a shipping built server

ocean geyser Jun 17, 2020, 11:43 PM

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@edgy dagger not sure how well this would translate to UE4 but i would do the shipping build without printing logs and debug messages and such. for example when looping through an array and doing a cout to print out the element it slows it down a TON compared to leaving the cout commented out

edgy dagger Jun 17, 2020, 11:50 PM

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@edgy dagger not sure how well this would translate to UE4 but i would do the shipping build without printing logs and debug messages and such. for example when looping through an array and doing a cout to print out the element it slows it down a TON compared to leaving the cout commented out
@ocean geyser for the shipping profile i think they removed the prints.

ocean geyser Jun 17, 2020, 11:50 PM

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they should, thats why im saying it would probably be the better route for a shipped game

edgy dagger Jun 17, 2020, 11:51 PM

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thanks @ocean geyser

supple vapor Jun 18, 2020, 2:28 AM

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@slate veldt for race conditions like that on possessed, there's a nifty (c++ only) function in controller called "Acknowledge Possession". It gets called on client after possession and when everything is loaded properly. It cleaned up my code a lot

somber glade Jun 18, 2020, 2:51 AM

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@supple vapor What exactly did you do with acknowledge possession? Does it get called after "on possess"? Currently to make sure my pawns are possessed before proceeding, when my gamemode tells a client controller to possess a pawn, it binds to an event "PossessedPawn" and "on possess" I have my controller call that event. When all controllers call that event, since it's a peer to peer racing game, I start the race logic after that.

fading birch Jun 18, 2020, 3:10 AM

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@somber glade it's called after OnPossess

somber glade Jun 18, 2020, 3:11 AM

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I'm looking it up now, does it trigger an event on the server/host? Or is it just an event that runs on the server without having to do an RPC?

fading birch Jun 18, 2020, 3:11 AM

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OnPossess calls ClientRestart which calls AcknowledgePossession

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AcknowledgePossession runs on client and calls ServerAcknowledgePossession

somber glade Jun 18, 2020, 3:12 AM

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Acknowledge possession of pawn documentation is stellar

fading birch Jun 18, 2020, 3:12 AM

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source isn't much better: c /** Returns true if input should be frozen (whether UnFreeze timer is active) */ virtual void AcknowledgePossession(class APawn* P);

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but source is how I found that info out

somber glade Jun 18, 2020, 3:16 AM

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hmm okay. I don't think that would really change anything for me.

supple vapor Jun 18, 2020, 3:20 AM

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@somber glade its called automatically by engine, you dont have to do anything

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you just override and add your custom setup code
as to what it does, its the same thing as on possess but on possess is server-side only
acknowledge possession is client-side when possession is successful

fading birch Jun 18, 2020, 3:21 AM

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Then call the super.

somber glade Jun 18, 2020, 3:22 AM

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The only setup code I have is the bind that tells the gamemode that the pawn is possessed. All that really does it kick off the countdown for the race, since that takes time anyway I don't think it much matters if that's called onpossess or with acknowledgepossession

shy kelp Jun 18, 2020, 4:48 AM

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is this the only way to get the player controller from the player state in the gamestate? is there a better way?

📎 contre.JPG

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nvm i found a better way