#multiplayer | Unreal Source | Page 407

grand kestrel Jul 13, 2018, 7:10 AM

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You're gonna need to show something

thin stratus Jul 13, 2018, 7:27 AM

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@tropic snow Might be that your sounds have no attenuation or however it is called setup

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@elder crypt The PlayerState is a replicated class

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You would only need to make sure that your puts variable inside the playerstate is marked as replicated and that on the server can update it

tropic snow Jul 13, 2018, 7:34 AM

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@thin stratus know a good resource on where to do this? Google hasnt been my friend for this.

thin stratus Jul 13, 2018, 7:37 AM

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Try again. I just typed ue4 sound attenuation and found several info

dusty halo Jul 13, 2018, 8:18 AM

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@thin stratus Where is the best way to save player exp in MP to avoid cheating?

winged badger Jul 13, 2018, 8:18 AM

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on your own server

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anything else can be hacked

bitter oriole Jul 13, 2018, 8:20 AM

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On a database server than only the dedicated servers that you own can access

dusty halo Jul 13, 2018, 8:21 AM

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Any good tutorial for that?

winged badger Jul 13, 2018, 8:21 AM

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as in 30 minute video? nope

dusty halo Jul 13, 2018, 8:23 AM

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@winged badger can be 5h tutorial if it will help me with that 😂

bitter oriole Jul 13, 2018, 8:23 AM

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Not really lots of tutorials for that kind of stuff

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You're going to be setting up a server that has some kind of program running that accepts connections from servers, authenticates them with a private + public key system, then accepts their requests about the players on the server

winged badger Jul 13, 2018, 8:24 AM

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i wouldn't go around trying to build a DB server on Unreal

bitter oriole Jul 13, 2018, 8:25 AM

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Something like an HTTP server - PHP + MySQL would work

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Then your dedicated servers would send regular HTTP requests

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"get level for player with steam id 01544584546" - "increase XP for player with steam id 01544584546"

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I think basically a month of work would give you something nice, but you need to learn about databases, HTTP requests, PHP

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Simplest route I guess

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(Perk of PHP is - you don't need a VPS for this server, just regular website hosting)

winged badger Jul 13, 2018, 8:27 AM

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it should be noted that dedicated servers aren't free

bitter oriole Jul 13, 2018, 8:28 AM

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Well this is basically the "MMO lite" architecture that Destiny or Sea of Thieves do, and yeah there's a cost

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But "avoiding cheating" always requires dedicated servers anyway

dusty halo Jul 13, 2018, 8:29 AM

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Ok, will take a look

grand kestrel Jul 13, 2018, 11:19 AM

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Couldn't you use Bruno's USQLite plugin? https://www.unrealengine.com/marketplace/usqlite-database

USQLite Database by Bruno Xavier Leite in Code Plugins - UE4 Marke...

This plugin empowers you to save and load data to and from SQLite Databases in Unreal Engine without forcing you to write a single line of SQL Code (or Blueprint Spaghetti).

bitter oriole Jul 13, 2018, 11:29 AM

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@grand kestrel Well, SQLite is just a database

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The point here is how you access it

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Database can't be on a client, or accessed from a client, so...

grand kestrel Jul 13, 2018, 11:30 AM

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Oh true

elder crypt Jul 13, 2018, 3:01 PM

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Okay :) I don't know exactly how to call for the variable, though. Since it's replicated to each player how would I get an array of all of them, such as how the default "Player Array" is?

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Is there any way at all to add the variable to that player array? I'm thinking no because I haven't been able to find any documentation on it

elder crypt Jul 13, 2018, 3:52 PM

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@thin stratus crap I meant to tag you

twin juniper Jul 13, 2018, 4:00 PM

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Hello can i get some help over here please guys,i swear ive done everything in this tutorial https://www.youtube.com/watch?v=D6QtvPrqNLg

YouTube

Unreal Engine

Blueprint Multiplayer: Lobby Game Mode | 15 | v4.11 Tutorial Serie...

Marching onward we start working on our Lobby Game Mode scripting which handles when a player connects to or leaves the lobby, updating the lobby information...

▶ Play video

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everything works great and following it, till the 15th tut

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everything works fine but the start session button is grey and i cant press it so i can go to the Arena01 any help? i done everything in tuts

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i hope some of you are familiar with this tut series

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i can provide pictures of the "Start Session" button blueprint

bitter oriole Jul 13, 2018, 4:35 PM

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Anyone know how to get the current lag from a remote player on the server ? Anything built-in for that ?

winged badger Jul 13, 2018, 4:44 PM

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maybe something in NetDriver

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its the first place i'd look

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@twin juniper check the button's Enabled bindings in the UMG designer

bitter oriole Jul 13, 2018, 4:46 PM

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Actually I found it as APlayerState->ExactPing.

winged badger Jul 13, 2018, 4:48 PM

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that seems suspiciously convenient

bitter oriole Jul 13, 2018, 4:54 PM

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It does, but it also looks correct 😛

elder crypt Jul 13, 2018, 5:57 PM

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How would I be able to get a single variable from the player state for all characters?

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Like if I had a score variable in the playerstate and I wanted to get the score from all players

charred crane Jul 13, 2018, 6:58 PM

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I've got what I think is a simple problem - My player controllers have an audio component. The host starts playing their component when they enter the game and when the other players connect, the host plays again, so that there are multiple out of sync tracks for the host. Any ideas?

elder crypt Jul 13, 2018, 7:07 PM

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@charred crane you can use switchonauthority or something like that to check if it’s the host or a client

charred crane Jul 13, 2018, 7:15 PM

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I don't have any logic for playing the component, its autoplay on spawn. why does the host get a new component playing when a new client joins. Is that because the server holds the PCs? (The client plays their component as normal upon spawn)

elder crypt Jul 13, 2018, 7:35 PM

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Can you send a screenshot of it?

charred crane Jul 13, 2018, 7:45 PM

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there isn't really anything to send a screenshot of. its a player controller with 1 component that has all default properties except which sound is going to play.

twin juniper Jul 13, 2018, 8:01 PM

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@elder crypt the binding and all are done as described by the video dont know what else to do

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This is the proplem ( its grey)

📎 1.PNG

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This is the button binding

📎 HERE.PNG

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this is the button "Start session" function (Enable ReadyStart button) BP

📎 alll.png

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Please help guys

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im willing to pay

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for anyone who can help me continue this small proplem

rich jewel Jul 13, 2018, 8:14 PM

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wouldn't host migration work just by saving the game and reloading it with a different host?

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I've read a lot of people say you need to change the source

twin juniper Jul 13, 2018, 8:15 PM

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How can i do that?

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isnt it a simple proplem? i just need to know why that button doesnt let me click on it so i can go to the level game

rich jewel Jul 13, 2018, 8:16 PM

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Oh I wasnt referring to your issue

twin juniper Jul 13, 2018, 8:16 PM

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ok

charred crane Jul 13, 2018, 8:42 PM

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give me a few mins @twin juniper and i'll see what i can come up with

winged badger Jul 13, 2018, 8:43 PM

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@twin juniper what Sets the CanWeStart boolean in LobbyGM?

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because only reason that button would be disabled on server is because that boolean is false

twin juniper Jul 13, 2018, 8:44 PM

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📎 CAN_WE_START.PNG

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as you can see

winged badger Jul 13, 2018, 8:44 PM

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the rest of EnableStartButton makes no sense, enabling it on client if their PlayerClass is NULL set and disabling it if it is Set

twin juniper Jul 13, 2018, 8:44 PM

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this is "can we start"

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if you are willing to help

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can we download "team viewer" program and let you get into my PC remotly?

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and see for your self

winged badger Jul 13, 2018, 8:45 PM

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if the design wants all client players to press Start

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before the server can press Start

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then your booleans for ButtonStatus after the 2nd branch in EnableStartButton

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are reversed

charred crane Jul 13, 2018, 8:47 PM

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nah that's not it, I'm looking at my version and its identical and I actually have the opposite problem

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@twin juniper do you have a custom event inside your lobby game mode called EveryoneUpdate?

twin juniper Jul 13, 2018, 9:05 PM

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@winged badger Just wanted to say big thanx for Zlo he helped me alo and got it working thanx man

rich jewel Jul 13, 2018, 9:25 PM

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Ok I've been struggling with this all day:

How do I make it so a client procs a server event? So for example when a widget opens up on players (you don't want to run the widget on the server) I want to disable player movement. I've found that if I do that on clientside, the server just overrides it.

full bane Jul 13, 2018, 9:27 PM

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set a variable and on the server and replicate it

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or use OnRep event and spawn the widget in there

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if it is a client event -> call a ServerRPC

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and disable movement on the server

rich jewel Jul 13, 2018, 9:27 PM

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replication only goes from server to client though

full bane Jul 13, 2018, 9:28 PM

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yes

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if the event that makes the widget pop up, you can just use replication

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so both client and server have the same state

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but you can use RPCs to go from client to server

rich jewel Jul 13, 2018, 9:29 PM

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Oh I'll look into RPCs then

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The thing is I have to cancel out the server when I apply the widget or the game crashes so I cant go server->client because the server is locked out of the BP

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Hm does the server have to call an event that is set to "replicate: run on server"

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Because I cant even get the server to print "hi"

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Oh is RPC not supported with blueprints?

vivid silo Jul 13, 2018, 9:46 PM

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📎 unknown.png

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Hi all, I'm having a problem trying to get my animation to play for other clients/server

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The animation seems to play on the clients side

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but other players can't see that animation being performed by said player

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Is anybody able to point me where I'm going wrong?

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Any help would be great! Have a great night everybody! 😃

winged badger Jul 13, 2018, 9:58 PM

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@rich jewel you can try with SetInputMode

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on the client, when the widget opens/closes

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it is hackable tho

vivid silo Jul 13, 2018, 10:22 PM

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Still stuck, any help would be great guys! 😃

glacial lotus Jul 13, 2018, 10:30 PM

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Any examples of how to make the network code(in fact blueprints) for the weapon shooting?

glacial lotus Jul 13, 2018, 10:45 PM

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I guess the question is if it makes sense to do the whole aiming logic on the server? My game is a cooperative TPS with lots of minions

winged badger Jul 13, 2018, 11:11 PM

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@vivid silo i don't see any logic executed on server there

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just a call to the server event

foggy kindle Jul 13, 2018, 11:14 PM

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@glacial lotus have you ever checked the multiplayer shootout in learning tab ? It is in blueprint and may have what you need.

vivid silo Jul 13, 2018, 11:23 PM

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@winged badger Which one should I switch to the server event

winged badger Jul 13, 2018, 11:24 PM

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your input always happens on local controller

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which is a client, if its not a listen server host

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after that you call the Server events, but what they do is not in the screen you posted

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in general, if you want to trigger an animation the flow goes like:

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(Client) InputAction -> Calls ServerRPC and a non-replicated event that triggers the animation locally

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you do not want your local player to wait for a round trip of network latency before he/she sees the game react to input

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(Server) ServerEvent (one called from input action) -> calls a Multicast RPC

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(Everyone) Multicast RPC does a Branch, checking that the Pawn you're animating is NOT LocallyControlled (so you don't play animation on OwningCient twice) -> calls the above mentioned non-replicated function/event that triggers the animation

vivid silo Jul 13, 2018, 11:29 PM

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Okay, thats a bit to take in but I'll try it out

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I'm new to BP, so I'll see what I can do

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Thank you very much! @winged badger

covert ember Jul 13, 2018, 11:36 PM

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Hello! so I am new to how the multiplayer works, because I have followed a tutorial and completed it, but only LAN servers show up, can someone please explain how I can get it to the public?

winged badger Jul 14, 2018, 12:55 AM

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steam?

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if it is Steam, there is a limitation that you can only see the servers on LAN if they are hosted on the same machine you are looking from

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nothing you can do about it

weak bear Jul 14, 2018, 1:12 AM

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Question. Can you use ai perception over network if the perception component only acts on the server and the Aactors information is replicated to clients?

worthy wasp Jul 14, 2018, 1:15 AM

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@weak bear - all AI should be controlled by server anyhow.... unless of course you have player controlled AI (PETS/HIRELINGS/MINIONS) which the commands still need to be ran as server so they replicate to others

weak bear Jul 14, 2018, 1:16 AM

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@worthy wasp right but still wasn't sure because the docs say that the component doesn't work on networked clients

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So wasn't entirely sure what that meant

elder crypt Jul 14, 2018, 1:29 AM

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📎 0297f063ba55155992d70e8262fe0ba6.png

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For some reason I'm not able to change my array at all. It comes out with an error when I play the game. Does anyone know why that may be?

worthy wasp Jul 14, 2018, 1:38 AM

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@elder crypt - this isnt really related to Multiplayer - but try getting a REFERENCE of hte index of your array (obviously its STRUCT based) and use SetMembersInStruct node pulling from the said struct reference.

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and sorry - i maybe a little wrong with GET REFERENCE - i dont think thats an ability of the GET node you'll find in the blueprint system

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just upll off of the GolfBallStruct - and GET REFERENCE

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it may/maynot be there (i think it is)

elder crypt Jul 14, 2018, 1:39 AM

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My bad I realized it should've gone in blueprints. It's just with a multiplayer game so I put it here

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and I'll try that right now :)

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Would it be something like this? @worthy wasp

📎 49ca91bb8725367b23f6fc00096ebaae.png

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Of course having them connected

worthy wasp Jul 14, 2018, 1:43 AM

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yes thats exactly it bu tyou dont need the SET ARRAY ELEMENT

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you can remove that

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now also

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the BEAUTY of SetMembersInStruct node.....

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you can select it - and select WHAT MEMBESR (DETAILS PANEL) you want to change

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all others will stay what they are if you have them UNSELECTED

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or if you select them - they'll fill whatever details you put in

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so say you want to change JUST THE INT.....

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select that - and voila - you changed just the INT information - the rest stayed what it was prior to this node

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very nice utility

elder crypt Jul 14, 2018, 1:48 AM

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Awesome, thank you :)

rich jewel Jul 14, 2018, 1:58 AM

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@winged badger Yes I can set input mode to UI only the issue is if the player was running when they step on the space they keep running even if you disable their movement

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So they lose control of their character but their character keeps moving at the last velocity they were moving at

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So I'm trying to stop the player fro moving (and doing their run animation) but that doesn't really work

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Apparently all I had to do is set ignore move input to true. Messing with the character's velocity, "player movement" and "movement mode" all didn't work. Sometimes... :S

unique thunder Jul 14, 2018, 2:16 AM

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Is setting the default pawn in game mode enough to spawn and possess a pawn when you join a multiplayer server? I'm able to join the server and the pawn is spawned but I don't possess it by default.

worthy wasp Jul 14, 2018, 2:35 AM

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@unique thunder - after joining a session the GameModes::PostLogin method is ran - where you need to handle spawnpoints, spawning and custom "OnBeginPlay" methods for the playercontroller tha thas joined.....

AGameMode::PostLogin is hte method that fires when a controller joins. Here you can safely cast to the declared default playercontroller class, and spawn a pawn - possessing it with the given playercontroller and then you can run custom functs (similar to begin play) in the said classes.

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this ONLY happens once - on NON-Seamless travel maps. if you ahve seamless travel = true - this wont happen.

rich jewel Jul 14, 2018, 2:39 AM

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I'm having a client -2 problem. The widget is set up client side only but when I click on a button it enters the event from client -2's perspective

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From what I understand client -2 is a backend thing

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Note I'm talking about client 'negative' 2 not 'dash' 2

worthy wasp Jul 14, 2018, 2:43 AM

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@rich jewel - i'll assume you're talking about PIE mode with more than 1 player client?

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as for client NEGATIVE 2 .... never heard of or seen such a thing... dont even know its existence. in a perfect world - DEDICATED SERVER: PController0 is the server... 1+ are clients.

In listen server - PController0 SHOULD be the server - and +1 for all clients - but only the server has information on the PControllers indeces..... no remote client can access anothers playercontroller at any time (even in dedi)

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and in regards to widgets - the playercontroller is what owns them .... so you should be accessing the controller with "GetOwningPlayer" node in the widget - casting to PlayerControllerClass for a reference..... dont use GetPlayerController(0) in multiplayer

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http://puu.sh/AW38n/5f4004e1b7.png

unique thunder Jul 14, 2018, 2:48 AM

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@worthy wasp Like this?

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📎 unknown.png

rich jewel Jul 14, 2018, 2:48 AM

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@worthy wasp this person had a similar issue https://answers.unrealengine.com/questions/288522/widget-and-replicationwho-is-client-2.html

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But I've set the widget to be owned by theclient who sttepped on the pressure plate

worthy wasp Jul 14, 2018, 2:49 AM

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@unique thunder - you need to pull off of the NEW PLAYER pin for whatever is hooked up to GetPlayerController0

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in this method you'll ALWAYS be getting PController0.....

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you dont want that - you want the player coming in

rich jewel Jul 14, 2018, 2:50 AM

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Although I have been using GetPlayerController often

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Not in the widget tho

worthy wasp Jul 14, 2018, 2:50 AM

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@unique thunder http://puu.sh/AW3bL/6920e20734.png

rich jewel Jul 14, 2018, 2:50 AM

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GetPlayerConroller[0] seems to work for setting the mouse cursor to active and ignoring move inputs

unique thunder Jul 14, 2018, 2:50 AM

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Perfect thank you

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P.S.

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📎 unknown.png

worthy wasp Jul 14, 2018, 2:51 AM

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@rich jewel - you're doing it wrong. in MPlayer widgets - ALWAYS acces the local playercontroller with: GetOwningPlayer as the target object

unique thunder Jul 14, 2018, 2:51 AM

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Will this always get the player start on each map respectively?

worthy wasp Jul 14, 2018, 2:51 AM

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this is safe and accurate

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yes sinn

unique thunder Jul 14, 2018, 2:51 AM

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ty

worthy wasp Jul 14, 2018, 2:51 AM

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perfect

rich jewel Jul 14, 2018, 2:51 AM

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Only in widgets?

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Like I can still use player controller in other BPs?

worthy wasp Jul 14, 2018, 2:51 AM

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GetOwningPlayer/Pawn is ONLY accessible to widgets

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yes

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it doesnt exist (in context) in any other UClass

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as for other BP's.....

rich jewel Jul 14, 2018, 2:52 AM

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Interesting so I couldn't really even print text without it doing player -2

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Not that I ever really need to print text other than debugging

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Perhaps player -2 is the 'player' that controls UMG?

worthy wasp Jul 14, 2018, 2:52 AM

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can you please specify if youre still referring to NEGATIVE 2 ?

rich jewel Jul 14, 2018, 2:54 AM

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📎 unknown.png

worthy wasp Jul 14, 2018, 2:54 AM

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so woul dyou please follow that up by showing your node setup for your PrintString please?

rich jewel Jul 14, 2018, 2:54 AM

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Yea why dont I just grab everything one sec

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Widget button

📎 unknown.png

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Where widget is created

📎 unknown.png

worthy wasp Jul 14, 2018, 2:56 AM

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i really dont think this is NEGATIVE 2

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rather

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its Client #2

rich jewel Jul 14, 2018, 2:56 AM

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That's what I thought but no

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one sec

worthy wasp Jul 14, 2018, 2:56 AM

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there IS NO NEGATIVE 2

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not even NEGATIVE 1 for that matter either lol

rich jewel Jul 14, 2018, 2:57 AM

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No -

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📎 unknown.png

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I know its very odd

worthy wasp Jul 14, 2018, 2:57 AM

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it starts at 0 and works up (as any array)

rich jewel Jul 14, 2018, 2:57 AM

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I found this thread https://answers.unrealengine.com/questions/288522/widget-and-replicationwho-is-client-2.html

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and the dev basically said hes not sure why it says client -2

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But his answer didnt really seem to be relevant to me on how to fix it

worthy wasp Jul 14, 2018, 2:58 AM

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can you screenshot your MULTIPLAYER OPTIONS for me? EDITOR PREFERENCES -> PLAY -> MPOPTIONS

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http://puu.sh/AW3p2/33dfa7977b.png

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and lastly - what EDITOR VERSION ar eyou on?

rich jewel Jul 14, 2018, 2:59 AM

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📎 unknown.png

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4.19

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if I set it to one players I still get client -2

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and it doesnt matter which player steps on the plate

worthy wasp Jul 14, 2018, 3:01 AM

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so i'm a bit lost - you have a print string connected to a button.... it prings "Client -2"

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what does the PLATE setup look like?

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also - is your DEDICATED SERVER popping up?

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(it'll be invisible unless you have -log in the executable at the end of the TARGET)

rich jewel Jul 14, 2018, 3:02 AM

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Yea dedicated server is not popping up

📎 unknown.png

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thats the plate's blueprint

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Its ugly because I condenced it to a square for screenshotting purposes

worthy wasp Jul 14, 2018, 3:03 AM

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ok heres a PERFECT example of a BAD USE of GetPlayerIndex[0]

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your ALWAYS goign to be getting playerindex 0

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which could be ANYONE in multiplayer......

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it has 0 accuracy

rich jewel Jul 14, 2018, 3:03 AM

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Yea that's what I was using it for

worthy wasp Jul 14, 2018, 3:03 AM

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what - the 0 accuracy?

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lol

rich jewel Jul 14, 2018, 3:04 AM

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Well you can see the blueprint is blocked off from the server

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and on client side I believe every single client regards player 0 as that instance's player

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at least its been working in that its creating the widgets and disabling the right player's movements

worthy wasp Jul 14, 2018, 3:05 AM

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hopefully so in your case

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so does this create a LOCAL widget to the playercontroller then?

rich jewel Jul 14, 2018, 3:05 AM

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it creates a widget properly to the player that steps on the plate and disables their movement

worthy wasp Jul 14, 2018, 3:05 AM

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right

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is this NOT working?

rich jewel Jul 14, 2018, 3:05 AM

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But then when I click on one of the buttons nothing works because it is going from client -2's perspective

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So the widget appears but it's like the widget is owned by client -2

worthy wasp Jul 14, 2018, 3:06 AM

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ok bud

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heres my thoughts....

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one sec while i pencil over top your SSshot

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ok

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@rich jewel http://puu.sh/AW3Fu/172ecc1a11.jpg

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this should properly create the UI for you

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and be tied to the CORRECT player.....

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i would go as far as to say you can safely remove the IsDedicatedServer branch as well

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both branches in fact

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the cast will be safetype... if it fails it doesnt execute anything else

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i'm not baggin on you - we all had to learn it with MPlayer setups... bvut you need to ditch GetPlayerController[0] or GetPlayerPawn[0] methods.....

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its not accurate (as you're seeing) and isnt safe to use

rich jewel Jul 14, 2018, 3:13 AM

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So whats the proper of saying "Get this instance's controlled character"?

worthy wasp Jul 14, 2018, 3:13 AM

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as i just did

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any overlap/trigger even tyou have an AActor reference of triggered actor

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same with any GetActorsOfClass

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take that reference - act on that

rich jewel Jul 14, 2018, 3:14 AM

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and cast to player pawn doesnt seem to be a thing

worthy wasp Jul 14, 2018, 3:14 AM

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dude - whats your player character class?

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i dont mean literally "Cast To PlayerPawnClass" there is no such node

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pull off of OTHER ACTOR pin....

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and type CAST

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if you have CONTEXT SENSITIVE on... you'll come up with available options

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one of which will be a blueprint that is your CHARACTER class of your project....

rich jewel Jul 14, 2018, 3:16 AM

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So you mean ThirdPersonCharacter?

worthy wasp Jul 14, 2018, 3:25 AM

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i have 0 idea what project setup you've done... if your doing from a template - then that sounds about right.

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sorry - stepped outside to let my dog out

elder crypt Jul 14, 2018, 3:26 AM

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@worthy wasp May I ask you a quick question?

rich jewel Jul 14, 2018, 3:26 AM

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Hm so I made the changes and it does work (and is a lot cleaner) but the widget is still player -2

worthy wasp Jul 14, 2018, 3:27 AM

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is Player2 (Should be at the TOP OF YOUR CONSOLE WINDOW) the one stepping on the plate?

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@elder crypt of course

elder crypt Jul 14, 2018, 3:27 AM

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Thanks :)

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So I did the thing you talked about earlier

📎 949f5ba7cae7790b7ee24cf575041061.png

worthy wasp Jul 14, 2018, 3:28 AM

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let me stop you right there real quick

elder crypt Jul 14, 2018, 3:28 AM

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(The structure variable is inside of my character blueprint)

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Yeah?

worthy wasp Jul 14, 2018, 3:28 AM

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your running a SERVER RPC event on a non-replicated variable

rich jewel Jul 14, 2018, 3:28 AM

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No player 2 is not

worthy wasp Jul 14, 2018, 3:28 AM

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as well - whenever you do RPC's you should ALWAY SPASS VARIABLES through - never direct access

rich jewel Jul 14, 2018, 3:29 AM

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Even if there's only one player + the dedicated server it still says player -2

worthy wasp Jul 14, 2018, 3:29 AM

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1 se clushen lemme look at things real quick.

rich jewel Jul 14, 2018, 3:29 AM

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well Client -2

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Alright I apprecate it

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Blueprint with your suggestions btw

📎 unknown.png

worthy wasp Jul 14, 2018, 3:31 AM

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also lushen - in a better programmed version - you would make a function on the PlayerController class to handle everything AFTER the CastToPlayerController() node.....

#

because - this shouldnt be in that PLATES actor class.....

#

just saying

#

this is programming etiquette or best practice i guess i'd say

#

its not that it wont work....

#

its just not determined "proper"

rich jewel Jul 14, 2018, 3:31 AM

#

yea I'd like to do things proper when I can so I appreciate it

worthy wasp Jul 14, 2018, 3:32 AM

#

😉

#

it seems like more work (and it is) but its done right at that point....

#

and thats what matters

#

makes troubleshooting easier when you have to

rich jewel Jul 14, 2018, 3:33 AM

#

Yea that way when I have to re-enable player movement and such then it'll be in the same BP as when I enabled it

#

even if they're called in different places

elder crypt Jul 14, 2018, 3:33 AM

#

I replicated it just now @worthy wasp :) But the issue is still here. https://gyazo.com/1a2b60409aef42faf78a59028df8d6db So I have the variable golfballstructure inside my character blueprint. I try to call it in any other place and it comes up with this error https://gyazo.com/2dcdc02b75f455b84cabc046a32b8b7c . (The screenshot is where I'm calling the variable). When I click on the error message it brings up the loop itself https://gyazo.com/ee5d655816de03ecd1148d2f971a9102

Gyazo

unique thunder Jul 14, 2018, 3:36 AM

#

So it looks like only when using dedicated server I spawn in but don't possess the default pawn.

#

Not sure why only in ded server it doesn't do it

worthy wasp Jul 14, 2018, 3:36 AM

#

@elder crypt - this is what i'm talking about:

📎 unknown.png

unique thunder Jul 14, 2018, 3:36 AM

#

aaaand I was using the wrong game state

#

ignore 😂

worthy wasp Jul 14, 2018, 3:37 AM

#

😉

#

@elder crypt - i dont know .... is GolfBallPlayerBlueprint a valid variable?

#

thats the error - saying its not valid

#

rather... "accessed none"

elder crypt Jul 14, 2018, 3:38 AM

#

Like this?

📎 fe1fc0f583a80262a7b7d46399166ae3.png

#

And what do you mean by valid variable?

worthy wasp Jul 14, 2018, 3:39 AM

#

perfect - however your going to want to pass in the STRING param too

#

i'm unsure on the error atrap .... something is using GolfBallPlayerBlueprint as a variable type... but its not set or its invalid....

elder crypt Jul 14, 2018, 3:40 AM

#

It's still showing the same error :(

worthy wasp Jul 14, 2018, 3:40 AM

#

try deleting the FOR EACH LOOP

elder crypt Jul 14, 2018, 3:40 AM

#

📎 4e570ec0abe212f97fc87db31fe382bf.png

#

That's the structure

worthy wasp Jul 14, 2018, 3:40 AM

#

pull from the struct again and type in ForEachLoop

#

and create a new ForEachLoop node

#

compile and see if you still get it

#

the error that is

elder crypt Jul 14, 2018, 3:41 AM

#

Yeah, the error still appears to be there

worthy wasp Jul 14, 2018, 3:41 AM

#

for shits and gigles - can you screenshot what you just did?

#

the ForEachLoop node conected

elder crypt Jul 14, 2018, 3:42 AM

#

📎 8d5a4adef870fa8ecdcfb9a7f48d7140.png

#

I made sure to add an array element to the variable

#

the golfballstructure variable

worthy wasp Jul 14, 2018, 3:45 AM

#

i'm unsure man 😦

#

i'm sorry

elder crypt Jul 14, 2018, 3:47 AM

#

That's totally okay :) I appreciate you taking a look at it

#

I think it might be a bug, I saw something about it not working for just structures

worthy wasp Jul 14, 2018, 3:48 AM

#

its an array of structs

#

i do it all the time

#

i dont think its a bug

#

youre in 4.19?

elder crypt Jul 14, 2018, 3:48 AM

#

Do you call for it in other places?

#

Yea :)

worthy wasp Jul 14, 2018, 3:48 AM

#

what do you mean by "do you call for it in other places" ?

elder crypt Jul 14, 2018, 3:49 AM

#

📎 783d53b3f73c9e9f952557326bcdd7f7.png

#

I created this inside of my playerblueprint

#

and I'm trying to get the variable from a different blueprint

📎 2fd7acd301acfb1ea479c17513e11c76.png

#

Did I set it up incorrectly?

worthy wasp Jul 14, 2018, 3:51 AM

#

is GolfBallPlayerBlueprint a correct type?

#

i would expect so - asyou got GolfBallStructure from it....

#

remove the ForEachloop - and compile - does it?

elder crypt Jul 14, 2018, 3:52 AM

#

Nah, there's no errors when I remove the loop

#

The errors came from the loop itself

worthy wasp Jul 14, 2018, 3:52 AM

#

stumped man....

#

try NOT splitting the struct on the ForEach node....

elder crypt Jul 14, 2018, 3:53 AM

#

Is there a way to break the array without having to use a loop?

worthy wasp Jul 14, 2018, 3:53 AM

#

leave it still a struct

elder crypt Jul 14, 2018, 3:53 AM

#

oh and maybe split it inside the widget I created

worthy wasp Jul 14, 2018, 3:53 AM

#

yah - or just come off the struct copy it out puts from the ForEachLLoop node... and break

rich jewel Jul 14, 2018, 3:54 AM

#

I did move everything to a function within 3rdpersoncharacter. Didn't fix anything but I know you didn't think it would

elder crypt Jul 14, 2018, 3:54 AM

#

This you mean?

📎 5d0295ff2dfa78aca8dd115f9c79a3a0.png

#

same dumb thing :(

#

Yeah I think it might be a bug or something

#

Oh well 😅

thin stratus Jul 14, 2018, 7:25 AM

#

@elder crypt you are getting accessed none errors on that?

rose egret Jul 14, 2018, 10:52 AM

#

I want to create some actors after Player Controller was created. which Func should I override in game mode?

winged badger Jul 14, 2018, 11:08 AM

#

HandleStartingNewPlayer

#

(it normally spawns the Default Pawn, so you'll have to either do it yourself or call Super)

elder crypt Jul 14, 2018, 3:43 PM

#

@thin stratus Yessir, that's exactly what I'm getting

thin stratus Jul 14, 2018, 3:51 PM

#

Then the character variable is empty

#

Or Player

#

Whatever the name was

elder crypt Jul 14, 2018, 3:51 PM

#

How would I fix that?

thin stratus Jul 14, 2018, 3:52 PM

#

Setting the variable with an actual reference

#

Reference variables are empty by default

#

You only defined the type

elder crypt Jul 14, 2018, 3:53 PM

#

I'm opening the game right now one sec

#

So I've defined the type up here. How would I make it not empty?

📎 481556f201ebd7a22d3ddbe83beb844a.png

thin stratus Jul 14, 2018, 5:58 PM

#

@elder crypt Not the struct

#

The variable you are getting the struct from

#

GolfBallPlayerBlueprint

#

That one is empty

#

I assume so at least

elder crypt Jul 14, 2018, 6:00 PM

#

I don't understand what you mean by empty

#

I don't think it is

#

Let me show you the blueprint

#

📎 d66c742911bd06bc06cbd948c10ec95b.png

#

That's pretty much the blueprint for that

#

@thin stratus

#

That all works fine but the errors come from the loop

#

The loop comes from my "tab menu"

#

📎 6ba1675f36cb7c7a9798c83dc6f88727.png

thin stratus Jul 14, 2018, 6:08 PM

#

Buddy

#

The reference variable

#

Is empty

elder crypt Jul 14, 2018, 6:08 PM

#

I don't know what that means lmao

#

I feel like such an idiot 😆

thin stratus Jul 14, 2018, 6:08 PM

#

Yeah you need to understand that hehe

#

Check the bp communication stream

#

Pinned to the #blueprint channel

#

A reference variable can hold one of many instances of a class

#

If you have a variable of type golfplayer then it doesnt mean it directly references the player

#

You could have 10000 players. It can't know which instance you mean

#

You have to set that yourself

elder crypt Jul 14, 2018, 6:11 PM

#

Okay

#

I'll take a look at the stream right now then

#

Thanks 😂

stone badge Jul 14, 2018, 6:35 PM

#

hii everyone , i have been looking for a tutorial or guide that can help me . i want to create a multi player scenario where player can see each other pick up object from the scene and moving them around (each player has Physics Handler and Event ticks) ? thxxx

twin juniper Jul 14, 2018, 10:15 PM

#

i trying change when i join the server i want no go to loby but to other map like characters selection when i chose the character its and click to play its send to ThirdPersonExampleMap
but i cant make it work
https://pastebin.com/KR5KEN4P
https://pastebin.com/9t9K1ji7
https://pastebin.com/fJziYNuQ

Pastebin

#include "TheLegendsOfArthurInstance.h" #include "Engine/Engine.h...

Pastebin

// Fill out your copyright notice in the Description page of Proje...

Pastebin

// Fill out your copyright notice in the Description page of Proje...

#

i change the World->ServerTravel("/Game/Assets/Maps/charselection?listen");

#

in all this files and its send-mne for the loby

#

what i doing wrong

winged badger Jul 14, 2018, 10:47 PM

#

you have to be connected to the server

#

in order to travel

#

and server has to issue the command

#

but when you join the server you will end up on whatever map server has open with ?listen option

#

automatically

twin juniper Jul 14, 2018, 11:29 PM

#

its send me for the loby automaticly

#

yes

elder crypt Jul 15, 2018, 6:23 AM

#

I have a tab menu that lists off players

#

The host player can see all players and each client can see the host as well as themselves

#

However the clients can't see the other clients

#

How could I fix that?

#

(the players each have their own struct inside the playerstate which is put into an array inside the game instance. Then that array is listed off in the tab menu)

umbral adder Jul 15, 2018, 6:59 AM

#

hey guys i am trying to make a buy/item system in multiplayer

#

📎 explain-1.jpg

#

i have these two databases, and i want to know how would i store the users's bought items .

and a system it check if the user have bought a currently selected item .

#

Thanks Decode

umbral adder Jul 15, 2018, 7:59 AM

#

📎 unknown.png

#

should i make a boughtitems in users table?

thin stratus Jul 15, 2018, 8:36 AM

#

No

#

You simply make a new one with item id and user id

#

Well and an id as primary key for the table itself

twin juniper Jul 15, 2018, 8:47 AM

#

can someone help-me

winged badger Jul 15, 2018, 9:52 AM

#

not without knowing what you need help with

twin juniper Jul 15, 2018, 9:55 AM

#

I want when join the server go to map characters selection but its send me every time for the loby

#

I change the code in server traveling to map i want but no sucess what i doing wrong

umbral adder Jul 15, 2018, 10:40 AM

#

@thin stratus thanks

twin juniper Jul 15, 2018, 11:58 AM

#

i have rebuild the project and not build ??

#

can be the problem

#

????

spare lynx Jul 15, 2018, 3:56 PM

#

Anyone knows a good tutorial/pdf whatsoever about UE networking - server/client? Don't mind C++

winged badger Jul 15, 2018, 3:59 PM

#

cedric's compendium

#

its pinned on this channel

twin juniper Jul 15, 2018, 4:00 PM

#

when i change the servertravel to map i want the client its be send it to map i put in servertravel right ??

spare lynx Jul 15, 2018, 4:03 PM

#

Oh cheers Zlo, lovely

stone badge Jul 15, 2018, 4:11 PM

#

hii everyone , im trying to use amazon game lift service so before i start i have some question if u may help me to understand them . in unreal i need to create a multiplayer based on dedicated server so it can work on game lift ? or do i need to use another thing ? thxxx

worthy wasp Jul 15, 2018, 5:20 PM

#

@stone badge - it says right on the very first description of GameLift services - that its intended for Dedicated Server hosting:

https://aws.amazon.com/gamelift/

Amazon Web Services, Inc.

Amazon GameLift

stone badge Jul 15, 2018, 6:09 PM

#

ohh thxxx i did see it thxx

elder crypt Jul 15, 2018, 7:01 PM

#

Hey I was wondering how I could have all players give information to a single array :)

charred crane Jul 15, 2018, 7:23 PM

#

So I've got a decently fast moving wall that spawns on the server and is meant to push clients away but it only works for a very small amount of its duration. instead the client hits it and then walks through it. any ideas?

#

i've set the object and its components to replicate along with setting replicates movement.

#

when the wall is used against the server it works perfectly, leading me to belive it has something to do with the clients position.

raven holly Jul 15, 2018, 9:05 PM

#

Why would multi-cast trigger an actor to spawn when it's outside the replication distance?

#

📎 unknown.png

#

I thought that multicast only sends within the replication distance ?

#

Or thats what the content examples show

worthy wasp Jul 15, 2018, 9:21 PM

#

@raven holly - dont fully understand your question - however it goes back to an old saying - if a tree falls in the woods - does it make a sound?

slim holly Jul 15, 2018, 9:22 PM

#

Initial probably has to ignore the limit

worthy wasp Jul 15, 2018, 9:22 PM

#

if you spawn an actor outside of a clients replication distance - the actor still spawned - for those inside of its replication distance...... those outside of it - they dont know abotu it yet.

slim holly Jul 15, 2018, 9:22 PM

#

because clients wouldn't otherwise even know it exists

raven holly Jul 15, 2018, 9:22 PM

#

Well they force themselves to know about the actor

#

For some reason

#

They spawn in the actor just to do the multicast then despawns

#

lol

worthy wasp Jul 15, 2018, 9:23 PM

#

they do when they cross over the REPLICATION DISTANCE threshold (like OnOVerlap)

raven holly Jul 15, 2018, 9:23 PM

#

Nope I spawn 2 players, run away from it until it despawns

#

Call a multicast, it spawns in, does the action then despawns

slim holly Jul 15, 2018, 9:24 PM

#

Engine can't really know is the content of the actor important, so it can't ignore it based on distance

worthy wasp Jul 15, 2018, 9:24 PM

#

josh - i fully dont understand your scenario - your not describing it clear enough with "it" and "it spawns in"

slim holly Jul 15, 2018, 9:25 PM

#

by despawning I would imagine it removes it from the client scene so it doesn't consume resources

#

but the actor has to be there to do the script

raven holly Jul 15, 2018, 9:25 PM

#

I'm saying. When a multicast is called, it is called on all clients, and if the client is outside the replication distance it spawns the actor in just for the multicast then despawns

slim holly Jul 15, 2018, 9:25 PM

#

yea, it sounds logical behavior

worthy wasp Jul 15, 2018, 9:25 PM

#

then you're coding something wrong....

raven holly Jul 15, 2018, 9:26 PM

#

Um..

worthy wasp Jul 15, 2018, 9:26 PM

#

or again - i'm not fully understanding you

slim holly Jul 15, 2018, 9:26 PM

#

if player dies outside replication distance in multiplayer, everyone should probably know about it

raven holly Jul 15, 2018, 9:26 PM

#

I'm saying. When a multicast is called, it is called on all clients, and if the client is outside the replication distance it spawns the actor in just for the multicast then despawns

slim holly Jul 15, 2018, 9:26 PM

#

even if it's outside the range

raven holly Jul 15, 2018, 9:26 PM

#

What else is there to understand lol

slim holly Jul 15, 2018, 9:26 PM

#

what is there not to

raven holly Jul 15, 2018, 9:27 PM

#

No, not everyone should know about a death

slim holly Jul 15, 2018, 9:27 PM

#

Engine can't tell is the content of the multicast important or not

raven holly Jul 15, 2018, 9:27 PM

#

If you have an open world scenario, one player dies across the map, the other shouldnt care

#

My question is.. is it by design that multicast will spawn an actor in outside the replication distance just for the multicast

#

Then my next question would be, how would I do it differently so that only actors within the radius care

worthy wasp Jul 15, 2018, 9:28 PM

#

so I (as client1) spawn a box at my present location.....

Client2 is OUTSIDE of my replication distance

Client2 is still seeing the box that i drop at client1's location?

slim holly Jul 15, 2018, 9:28 PM

#

get all clients in range and call them individually

raven holly Jul 15, 2018, 9:28 PM

#

What @worthy wasp

#

I have no idea what you're on about

worthy wasp Jul 15, 2018, 9:28 PM

#

ok good luck with your problem!

raven holly Jul 15, 2018, 9:28 PM

#

That is completely not what i'm saying

#

@slim holly Would be a little excessive for a gunshot sound etc

#

I was hoping multicast just didn't send it to actors outside it's replication distance

#

Which I swear was what it was meant to do

#

Based off the content examples

slim holly Jul 15, 2018, 9:30 PM

#

you just need to tweak your gunshot event not to be multicast

#

but say, a replicated boolean

raven holly Jul 15, 2018, 9:30 PM

#

Yeah that wouldn't work so well

slim holly Jul 15, 2018, 9:30 PM

#

it's doable for sure

#

as long as it looks "ok" for the local player

#

and trust me, not a single game these days look "ok" if you look close enough

raven holly Jul 15, 2018, 9:31 PM

#

haha

#

📎 unknown.png

slim holly Jul 15, 2018, 9:33 PM

#

I'm sure there are network relevancy checks you could implement

raven holly Jul 15, 2018, 9:34 PM

#

Yeah its meant to outside the distance

slim holly Jul 15, 2018, 9:34 PM

#

but I don't know is it enough for engine to skip the default behavior

raven holly Jul 15, 2018, 9:34 PM

#

It could be because I have a reference to the actor in question, but.. that shouldnt affect it

slim holly Jul 15, 2018, 9:35 PM

#

hold on

#

You could do the check on server end

raven holly Jul 15, 2018, 9:37 PM

#

Could it be that I have a bind on the other clients?

slim holly Jul 15, 2018, 9:37 PM

#

no but it would have to be rpc 🤔

raven holly Jul 15, 2018, 9:37 PM

#

That having a bind causes it to be relevant to multicasts

#

The content examples and the UE documentation are both different lol

#

documentation says all connected clients

#

content examples say all relevant actors

slim holly Jul 15, 2018, 9:44 PM

#

I can't say really

raven holly Jul 15, 2018, 9:44 PM

#

https://docs.unrealengine.com/en-us/Resources/ContentExamples/Networking/2_2?utm_source=editor&utm_medium=docs&utm_campaign=doc_actors

#

"Move the client into the blue ring, causing the chest to be come relevant."

#

So it's designed to only multicast to actors inside it's rep distance

#

I must have something aside replication distance keeping it relevant to multicasts

#

It may be a bind to an event dispatch

slim holly Jul 15, 2018, 9:50 PM

#

so yea, doc says multicast doesn't occur if actor is not relevant

#

but as far as I know, OnRep boolean would be a workaround

raven holly Jul 15, 2018, 9:52 PM

#

Shouldnt need a workaround though haha

slim holly Jul 15, 2018, 9:52 PM

#

welp, such is life of a programmer

raven holly Jul 15, 2018, 9:53 PM

#

Life of an unreal engine programmer

#

alex

slim holly Jul 15, 2018, 9:54 PM

#

btw was it reliable multicast?

raven holly Jul 15, 2018, 9:54 PM

#

indeed

#

im about to test that now

#

I rarely use non reliable multicasts

#

Everything I use multicast for is quite important

#

weird

#

Non reliable worked

#

lol

#

Fixed it *

#

That's fucking stupid

#

🤔

#

Should be reliable to relavent actors

#

Time to dig into ue source i guess

slim holly Jul 15, 2018, 9:59 PM

#

reliable == forced

raven holly Jul 15, 2018, 10:00 PM

#

yes but it also means, that it will sometimes stop things when it thinks the network is saturated

slim holly Jul 15, 2018, 10:00 PM

#

that's why the replicated variable approach is better

#

it only gets delayed, not dropped

raven holly Jul 15, 2018, 10:01 PM

#

For the likes of gunshots and what im using it for, doing that won't really be viable

slim holly Jul 15, 2018, 10:01 PM

#

I only use booleans for weapons

#

the logic is same on client and server anyway

raven holly Jul 15, 2018, 10:01 PM

#

Really?

#

they did fix the rep notify delays didnt they

slim holly Jul 15, 2018, 10:02 PM

#

the delay is only for the visuals

#

if there's any

raven holly Jul 15, 2018, 10:03 PM

#

https://issues.unrealengine.com/issue/UE-45681

#

Well sounds are important also

#

What do you do, just set a bool, shoot to true, then immediately false?

#

or flipflop

slim holly Jul 15, 2018, 10:04 PM

#

5-40sec sounds like saturation

#

(done that too)

#

well, not saturation as such but Engine has built-in flood protection

raven holly Jul 15, 2018, 10:04 PM

#

Nah this was an old issue with rep notify which is why i didn't use it for time sensitive stuff

#

old.. but fixed in 4.19

#

Im using 4.19 so shouldnt be an issue with delays

#

But.. the net update time would have to be highish

slim holly Jul 15, 2018, 10:05 PM

#

but the flood protection only affects the sending connection tho

#

well yea the tickrate would slow it down, by a mere 15ms

raven holly Jul 15, 2018, 10:06 PM

#

Well the player is using 100 net update freq

slim holly Jul 15, 2018, 10:06 PM

#

all I say is, don't fight the clock on networking

#

it always wins

#

even a 100ms delay is perfectly acceptable in open world games

raven holly Jul 15, 2018, 10:07 PM

#

haha yeah i guess so

slim holly Jul 15, 2018, 10:07 PM

#

for counter-strike and types, multicast everything

raven holly Jul 15, 2018, 10:07 PM

#

Good to know that multicast ignore replication distance

#

My player were reporting ghost sounds from guns at the centre of the map

#

Which is because it would trigger the gun to spawn (0,0,0) and then attach to the player for the multicast

#

(╯°□°）╯︵ ┻━┻

grand kestrel Jul 15, 2018, 10:08 PM

#

Attachments should be done with replication

#

Because they're not always relevant for multicast

#

Soon as they become relevant the replication will occur

#

And it attaches

raven holly Jul 15, 2018, 10:09 PM

#

Yes

grand kestrel Jul 15, 2018, 10:09 PM

#

The multicast wont take care of that

raven holly Jul 15, 2018, 10:09 PM

#

That's what I do

#

🤔

#

Idk what info you're adding to the conv, but I think you missed the context

grand kestrel Jul 15, 2018, 10:09 PM

#

Oh ok

#

Sorry

#

I just popped in, didn't read up

earnest oar Jul 15, 2018, 10:09 PM

#

Could I ask for some help with a problem in #blueprints?

glacial lotus Jul 15, 2018, 11:29 PM

#

In my character I'm trying to delete the player name text and status widget only if the character is the player (4 players multiplayer game using listen server). But it doesn't work. Any tips?

#

I'm using "is locally controlled". Is that right?

elder crypt Jul 15, 2018, 11:59 PM

#

I have the whole issue with the structs and filling in variables figured out :) However I have a question if anyone may know what to do.
So I have a PlayerState that sends each player's information to a GameInstance
https://gyazo.com/68e53426c62aa8150d816e99207c0fa5
Then I have a tab menu that breaks up the information and puts it on screen for the player
https://gyazo.com/ae8aab8a20ce125e0158b1f4fe9bc771
However as of now only the server owner can see this information
https://gyazo.com/d77014a8991bab4f253ae886c2232abb

Gyazo

#

How could I make the clients also see this information?

winter zenith Jul 16, 2018, 12:04 AM

#

What you could do is rather than store it in the Game Instance is have it stored within the Player State still, as each player will have a replicated copy of each players PlayerState

elder crypt Jul 16, 2018, 12:26 AM

#

That doesn't seem to be working very well @winter zenith

winter zenith Jul 16, 2018, 12:30 AM

#

Are the values not being replicated to other clients?

#

for setting the values the clients should be calling an RPC on their own PlayerState to set the value, and the RPC call on the server would set the relevant replicated variables, which in turn should replicate the values to each other client.

elder crypt Jul 16, 2018, 12:40 AM

#

Should I use a switch has authority?

worthy wasp Jul 16, 2018, 1:43 AM

#

for anything replicated you ALWAYS need to set the values AS SERVER @elder crypt

#

White is right in his above mention - store it in the playerstate.... make sure the variables are REPLICATED as well make sure that they are set AS SERVER

hoary lark Jul 16, 2018, 1:56 AM

#

I hate crossposting, but I just posted a Q in #legacy-physics about AddForce acting different on clients vs localhost and would love it if anyone could un-retard me.

elder crypt Jul 16, 2018, 2:45 AM

#

@worthy wasp Okay :) I just did all that

#

However now when I press tab as the host I can only see their name

#

and the clients can only see themself and the host

winter zenith Jul 16, 2018, 4:39 AM

#

@elder crypt if it's still not working would you mind sending an updated screenshot of your your RPC call and RPC implementation look like? 😃

elder crypt Jul 16, 2018, 4:55 AM

#

Yeah sure :)

#

This first one is the playerstate

📎 fcd87c25559b7073744dcc6c8efa4b90.png

#

and this is the tab list

📎 aed377d19a2771ab650dd26b4cc35a09.png

winter zenith Jul 16, 2018, 5:02 AM

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ok, so you've got all player information

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in a particular player's playerstate

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is that actually holding info about other players

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that might need to be changed to only hold information about that specific player

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i.e. the state directly related to that player

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not sure if maybe you already have, but this is well worth reading through - http://cedric-neukirchen.net/Downloads/Compendium/UE4_Network_Compendium_by_Cedric_eXi_Neukirchen.pdf

elder crypt Jul 16, 2018, 5:05 AM

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Okay :) The server itself does seem to hold info about all of the players though

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I had a print screen for the "all player information" varaible and it showed 3 different players

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📎 e7b0ece7c01553bc69cb3ce08900f420.png

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And I've read a bit of that :) It's a lot to take in, y'know? 😅 😂

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I'll read more in depth though

winter zenith Jul 16, 2018, 6:46 AM

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for sure, it's a bit document

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but well worth reading through a few times until it really clicks and you go: a-ha

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this is what I should be using player state for

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versus game state

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versus game mode

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etc 😃

umbral adder Jul 16, 2018, 8:56 AM

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is this what u mean @thin stratus

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📎 unknown.png

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this will contain all the purchaces right?

late violet Jul 16, 2018, 9:53 AM

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Maybe a stupid question, but I've got a dedicated server built, and I want to limit the max players allowed to join at one time to 4, but I can't seem to find a setting or even a property to set a limit. I've tried looking in the GameMode for a callback to deny a player from joining also, and unable to find this. How best would I create this limit?

lean hornet Jul 16, 2018, 9:56 AM

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What is the best way to replicate physics balls movement with blueprints ? (with the least amount of lag)I currently have a system in place where it has quite a bit of lag and also theres no smooth replication.

📎 unknown.png

bitter oriole Jul 16, 2018, 10:28 AM

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@lean hornet Smooth replication of UE physics is a very tough sale

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UE physics aren't deterministic, so there isn't a strategy that works seamlessly all the time

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Best you can do is let all clients be somewhat autonomous in their simulation, but apply additional forces to push them toward what the server does

lean hornet Jul 16, 2018, 10:29 AM

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hmmm so my above example preatty much ?

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i thaught of a way with vinterp and a timeline do you think that would work better ?

bitter oriole Jul 16, 2018, 10:30 AM

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Well, what I was thinking was to actually let clients simulate physics themselves - just with an applied force to correct toward the server

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Would be very smooth and realistic, probably not very close to what the server does, but that's a tradeof to make

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If you don't care about 100% smooth, replication + interpolation with a cubic curve works well

lean hornet Jul 16, 2018, 10:32 AM

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the issue is i need preatty much exact positions of the ballls because im currenly working on a pool game so rough locations are not that good

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is there a better way to work with relication in c++ ß

bitter oriole Jul 16, 2018, 10:34 AM

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For a pool game, honestly, you probably want to look at custom physics, and drop the built-in simulation entirely

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Like, keep using that for collision detection - but not for movement

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If you manage to have actually deterministic output for a given input (player shot) then you just need to replicate that

lean hornet Jul 16, 2018, 10:36 AM

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should i still correct it maybe every that and that time ?

bitter oriole Jul 16, 2018, 10:37 AM

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Yeah a reset of the table after every shot would be common sense

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This is an ideal solution, though, maybe not an easily achievable one

lean hornet Jul 16, 2018, 10:38 AM

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i have a great idea on how to do it that way and keeping the current physiscs system.

bitter oriole Jul 16, 2018, 10:39 AM

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The key limitations UE4 physics have are like this :

same inputs can yield different outputs
no way to run a simulation and then abort it or rollback it

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Unfortunately these two concepts are core to MP physics

lean hornet Jul 16, 2018, 10:39 AM

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yeah ill find a workaround thank you for your feedback

thin stratus Jul 16, 2018, 10:53 AM

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@umbral adder Yeah kinda. You still need an id for the entry itself

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entry_id | user_id | item_id

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With that you can query all items owned by the user

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By simply joining the 3 tables

umbral adder Jul 16, 2018, 11:14 AM

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@thin stratus ?

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u mean query the entry_id?

thin stratus Jul 16, 2018, 11:26 AM

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I mean what I wrote :P

swift path Jul 16, 2018, 12:43 PM

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Has anyone ever received the error Warning: STEAM: Failed to initialize Steam, this could be due to a Steam server and client running on the same machine. Try running with -NOSTEAM on the cmdline to disable. before? A Google search yielded very little. Already verified Steam is not running on the machine running the dedicated server.

thin stratus Jul 16, 2018, 12:47 PM

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You need to put the Steam Binaries from the Engine Folder into the your DediServer's Binaries folder

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@swift path

swift path Jul 16, 2018, 1:01 PM

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@thin stratus Unfortunately that didn't seem to do anything. Thanks though!

thin stratus Jul 16, 2018, 1:03 PM

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Well, you don't need to steam on teh dedi server pc

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And also not an account for it

swift path Jul 16, 2018, 1:05 PM

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Oh, you don't? I remember a while back you were required to have Steam on the dedicated server itself.

late violet Jul 16, 2018, 1:30 PM

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@thin stratus Do you know how to limit the amount of players that can join a dedicated server? I've not been able to find a setting, field or even an overridable method to limit it.

proper olive Jul 16, 2018, 1:32 PM

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morning guys! I'm having some jitter on my clients when using a Set Actor Rotation RPC... Rotation isn't automatically replicated so just to see working results, I'm basically just swtich-authority and RPCing all over the place. I could probably whittle away at it for a while until I see better results, but can anyone dictate the proper sequence for setting actor rotation in multiplayer with proper multicasting from either server/client? (on a character bp)

thin stratus Jul 16, 2018, 1:37 PM

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@late violet "MaxPlayers"

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can be used as a start option

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e.g. ?MaxPlayers=10

late violet Jul 16, 2018, 1:38 PM

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So if I launch the dedicated server (server.exe -log -MaxPlayers 4) that'll work?

thin stratus Jul 16, 2018, 1:40 PM

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It's an options so it goes behind the mapname

late violet Jul 16, 2018, 1:40 PM

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Ah okay, I'll try that 😃

proper olive Jul 16, 2018, 1:42 PM

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just to clarify my question I guess what I mean is... I need to on-owning-client set rotation, then for remote connections, run on server and multicast - do I use "is locally controlled" - false, to prevent the multicast/server from overriding what the client has already done on their end? This will help me understand smooth combat replication when I eventually get there too 😄

raven holly Jul 16, 2018, 1:50 PM

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@thin stratus Oh UE actually supports that? Neat!

next falcon Jul 16, 2018, 2:20 PM

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Hello
Could anyone help me with a multiplayer chunk-based problem?
Its hard to explain here but if u know about multiplayer and chunks pls write me 😄

thin stratus Jul 16, 2018, 4:51 PM

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@raven holly Yeah, that will even auto kick if the 5 player joins

raven holly Jul 16, 2018, 5:05 PM

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Yeah I usually set mine in the basegame

gilded olive Jul 16, 2018, 5:11 PM

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anyone knows when a RPC is called? If for example I call Server_Fire(), that method will be executed before the tick of that actor? first things when tick ? after the tick? when arrives....

raven holly Jul 16, 2018, 5:12 PM

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Depends on latency to the server

gilded olive Jul 16, 2018, 5:13 PM

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so you are saying that the method does not have an specific order?

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unreal executes the method when arrive instead of buffer it and execute it when the actor tick

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that it?

steady briar Jul 16, 2018, 6:10 PM

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if i want to set a variable (bool) with repnotify, do i just use a switch has authority so that the server sets the bool?

bold heron Jul 16, 2018, 7:00 PM

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Anyone here have a good understanding of multiplayer systems using a dedicated aws server?

icy nacelle Jul 16, 2018, 7:13 PM

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Right, having a very strange bug.
When my player sprints, the animation is jaggedy (When playing as a multiplayer client)
HOWEVER, when I have a BP open on my second monitor while I play on the first monitor, this doesn't occur. Any idea why this is happening? Is it a multiplayer problem or an unreal editor one???

bold heron Jul 16, 2018, 7:27 PM

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if you are replicating your animation state it could cause some rubber banding and look poor. If it's possible, replicate the driving parameters behind the animation and let it handle the simulation locally. That is of course if the animation does not need to be completely accurate.

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@icy nacelle

glass orbit Jul 16, 2018, 7:29 PM

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hi

icy nacelle Jul 16, 2018, 7:29 PM

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When you say animation state, do you refer to the movement component?

bold heron Jul 16, 2018, 7:30 PM

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Depends on your movement setup. Are you using an animation blueprint?

glass orbit Jul 16, 2018, 7:30 PM

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hello

icy nacelle Jul 16, 2018, 7:31 PM

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I am yes

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Havent needed to use montages as of yet, but we've got a lot more animation work to do

bold heron Jul 16, 2018, 7:32 PM

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So look into what is driving your locomotion animation.

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Usually this is something like a velocity variable

steady briar Jul 16, 2018, 7:33 PM

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anyone able to find the link to the ue4 livestream about replicating with the treasure chest opening and stuff? i watched it on my tv and i swear youtube results are different between tv and pc <_< i cant find it again

icy nacelle Jul 16, 2018, 7:34 PM

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Thanks for the help JD I'll look into it

bold heron Jul 16, 2018, 7:37 PM

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@steady briar is it in this list somewhere ?
https://docs.unrealengine.com/en-us/Videos/PLZlv_N0_O1ga0aV9jVqJgog0VWz1cLL5f/bOjYP-c4qhA

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maybe #19

steady briar Jul 16, 2018, 7:38 PM

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just me or do those pages take like a minute before it even tries to load

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and no not #19. i tried searching their youtube channel but it was cluttered

fresh vault Jul 16, 2018, 7:43 PM

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@icy nacelle It might be the editor option "Use less CPU when in Background". Try turning that off maybe?

icy nacelle Jul 16, 2018, 7:44 PM

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Thats what I was thinking, I remember my lecturer telling me that you can turn it off. Cant remember where it is

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Project /editor settings?

fresh vault Jul 16, 2018, 7:44 PM

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Edit->Editor Preferences. Use the search bar "Use less" and it will be at the top.

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Erm.. it will be the only thing hehe

icy nacelle Jul 16, 2018, 7:45 PM

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Ah, nope that want it.

fresh vault Jul 16, 2018, 7:45 PM

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oh well.

icy nacelle Jul 16, 2018, 7:45 PM

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Appreciate the suggestion though! Thanks.

fresh vault Jul 16, 2018, 7:47 PM

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Oh it's just sprinting. So yeah it might be that the remote side doesn't know to increase the max speed. Doing that on the server doesn't change it for the clients.

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So you're seeing a battle of locations

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Well, it depends on how you do it really, but it could be a disconnect relating to the speed so moving prediction on the remote side doesn't predict the right location.

icy nacelle Jul 16, 2018, 7:56 PM

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That actually sounds a lot more likely

fresh vault Jul 16, 2018, 7:59 PM

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I'm not too great with UE4 so there may be a better way, but in my sprint code, I change Max Speed myself. I had to make sure it changed for everyone.

swift topaz Jul 16, 2018, 9:00 PM

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I have an interesting problem that I'm having issues replicating.

Client A spawns actors to build a level on the dedicated server. The dedicated server has a blank level (it's being populated by one client). Client B through E join the dedicated server, but see every actor loading in on their screen one at a time. Unfortunately the spawned actors also function as ground. Making B through E fall through the world until all actors load on their machine and they reset their position.

I tried running as both Client A and B and B had no issues snapping back to the ground actor once the appropriate actor was loaded in. Others however, said they only way they were able to remain on the ground actors was to jump as soon as they loaded in while the actors were being propagated.

What's the best way to go about figuring out when all relevant actors have finished loading for clients on a dedicated server?

winged badger Jul 16, 2018, 9:51 PM

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loading from a package really isn't an option?

zinc zealot Jul 16, 2018, 11:40 PM

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guys

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📎 unknown.png

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can i use something like this if i wanna make a multiplayer game ?

icy nacelle Jul 16, 2018, 11:45 PM

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@zinc zealot If you want to make a multiplayer game, definitely read up on cedriks compendium

zinc zealot Jul 16, 2018, 11:45 PM

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whats that ?

icy nacelle Jul 16, 2018, 11:45 PM

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

zinc zealot Jul 16, 2018, 11:45 PM

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thx 😄

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btw

icy nacelle Jul 16, 2018, 11:45 PM

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Tells you everything you need to know about multiplayer

zinc zealot Jul 16, 2018, 11:45 PM

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ik its a weird question

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how old are most ppl here ?

icy nacelle Jul 16, 2018, 11:46 PM

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That is a weird question

zinc zealot Jul 16, 2018, 11:46 PM

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xD

icy nacelle Jul 16, 2018, 11:46 PM

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Might want to take it to #ue4-general / #lounge

zinc zealot Jul 16, 2018, 11:47 PM

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kay sry XD

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now last question

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ik you kinda anwser it but its just that

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To make the multiplayer do i have to host the servers (kinda obvious ik dont judge) or is there anyway to

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idk

icy nacelle Jul 16, 2018, 11:49 PM

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Having a weird issue with trying to get my destructible mesh to explode for all clients - So far I've tried to make it work with rep notify, then I did a rep notify on a server call but it still doesn't work. Should I move all this to a controller or will it work on the actor?

📎 Capture.PNG

zinc zealot Jul 16, 2018, 11:50 PM

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:/

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idk

copper portal Jul 17, 2018, 1:29 AM

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I need help with a respawn system. I have most of the things done its just that sometimes, all players wont respawn and it is not consistent.

unique thunder Jul 17, 2018, 3:55 AM

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Does Owner No See not work in multiplayer? Ran with dedicated server checked and I can see the mesh even though it's checked to not let me.

winter zenith Jul 17, 2018, 4:36 AM

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@unique thunder it should work. I'm using it to show/hide first-person/third-person meshes for a FPS and it's working happily. Is the problem only with a dedicated server or also when running using a listen server with other clients?

thin stratus Jul 17, 2018, 7:54 AM

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Are you sure that the player is the owner of the mesh/actor?

finite bison Jul 17, 2018, 10:30 AM

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if the server spawns an actor for which it had to manually load an asset using FStreamableManager, does the client have to handle the manual asset loading as well?

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if yes, where would i hook into to handle that?

icy nacelle Jul 17, 2018, 12:57 PM

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Still having troubles with the above problem ^

open gazelle Jul 17, 2018, 3:46 PM

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Hello channel! I am trying to find out how to check if client is outdated. Is there any functionality already implemented. I an searching the code but until now without luck.

thin stratus Jul 17, 2018, 4:32 PM

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There should be

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That should work based on version numbers when packaging

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But not entirely sure

wispy silo Jul 17, 2018, 5:37 PM

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hi, simple question. When programming for multiplayer and you want to reference different players through their controller, is it simply a matter of changing the player controller index?

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or is that used for something else?

icy nacelle Jul 17, 2018, 5:43 PM

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Thats used for something else

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Unless its couch-co-op

thin stratus Jul 17, 2018, 5:51 PM

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The index is for local players

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Or Splitscreen players

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Not sure if you can use it when connecting with splitscreen to online

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So it's only for couch coop

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You can't access other players PC online

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Only the server has all of them

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@wispy silo

steady briar Jul 17, 2018, 5:57 PM

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https://www.unrealengine.com/en-US/blog/blueprint-networking-tutorials

Unreal Engine

Blueprint Networking Tutorials

A previous blog post offered a crash course in blueprint networking, but now we’re back with a thrilling six-part mini-series on creating blueprint content that works in a networked game!

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are these effective or are there bad practices in it?

twin juniper Jul 17, 2018, 5:59 PM

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Hey, does someone know how to "server travel" correctly.

wispy silo Jul 17, 2018, 6:00 PM

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oh okay, so controller index is local machine only?

finite bison Jul 17, 2018, 6:00 PM

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is there any way to differentiate multiple PIE instances for logging purposes? like port used, unique ID etc?

wispy silo Jul 17, 2018, 6:00 PM

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how would i go about accessing the players for online sessions? or would i just use their net ID with a custom array?

finite bison Jul 17, 2018, 6:02 PM

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i have this log output and don't really know where the instances are living (PIE listen server with 2 players)

    IsLocalController: true  -- BeginPlay TestPlayerController_0 ..ROLE on machine : ROLE_Authority / REMOTE ROLE : ROLE_SimulatedProxy
    IsLocalController: false -- BeginPlay TestPlayerController_1 ..ROLE on machine : ROLE_Authority / REMOTE ROLE : ROLE_None
    IsLocalController: true  -- BeginPlay TestPlayerController_0 ..ROLE on machine : ROLE_AutonomousProxy / REMOTE ROLE : ROLE_Authority

arctic willow Jul 17, 2018, 6:39 PM

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could someone help me with the Steam integration? I followed Unreal's Documentation about it and used steam's sdk version v142. I got an build error with ..\source\SteamTest\SteamTest.Build.cs(6,12) : error CS1729: 'UnrealBuildTool.ModuleRules' does not contain a constructor that takes 0 arguments

wispy silo Jul 17, 2018, 6:53 PM

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is this on a new project or established one?

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you made all the proper changes to the DefaultEngine.ini right?

arctic willow Jul 17, 2018, 6:54 PM

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yeah i did, it's a new project

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i maybe solved the problem..

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okay solved, but still thx for the effort 😃

languid comet Jul 17, 2018, 7:10 PM

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@icy nacelle I could be wrong, but I believe everything health related has to happen on the server, including explosions, then the server send that info to all clients.

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It was in one of the Unreal tutorials...https://www.unrealengine.com/en-US/blog/blueprint-networking-tutorials

Unreal Engine

Blueprint Networking Tutorials

A previous blog post offered a crash course in blueprint networking, but now we’re back with a thrilling six-part mini-series on creating blueprint content that works in a networked game!

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Check how he spawns the bomb under the last two videos

polar portal Jul 17, 2018, 9:07 PM

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Hey guys, I've got a simple pong game where the default pawn set in the game mode and the player moves up and down (sets the linear velocity of the pawn on an axis). If I try to set the number of players to 2 in play in editor mode I'd like to be able to set the player in the newly opened window to be on the left hand side (opposite player 1) so that the other player can play in a separate window (locally networked multiplayer). How can I achieve this?

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Ideally, I'd like to have a UMG menu with host game, join game, in host game the player will sit and wait for someone to join before the game will begin, in join game, it joins a locally hosted game

icy nacelle Jul 17, 2018, 9:14 PM

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Whoops sorry for the late reply @languid comet, I think discord is down when I first tried to reply!
I dont think thats the problem I'm looking at right now since I've already tried a to run it on server and also run it on server then multicast. I think the problem lies with not being able to run this type of event with RPC on an actor in the world

thin stratus Jul 17, 2018, 9:44 PM

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@polar portal Setting players to 2 should already be enough

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At least for testing

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You just have to make sure that you have two spawn points, one on each side

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For join, host etc there are a lot of tutorials out there

polar portal Jul 17, 2018, 9:46 PM

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I've Just tried something quickly, on my host game button I open the level I have with 2 spawn points as Open level with listen as the additional options. Then with join I run the command: Open 127.0.0.1. This successfully puts me in the same game as I can see one paddle moving and the ball moving except..player 2 who joined isn't at the player 2 spawn..

slim holly Jul 17, 2018, 9:55 PM

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yea there's no logic by default to select spawn points

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there is a internal function in gamemode to assign those, but it's never called

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iirc

polar portal Jul 17, 2018, 10:00 PM

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do you recall the name of the function?

slim holly Jul 17, 2018, 10:07 PM

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nvm it was just a function to find PlayerStart actor with specific tag

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so I guess tagging playerstarts is the intended use-case

polar portal Jul 17, 2018, 10:16 PM

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it's strange, if I host the game on the client the client will spawn in player 2, if I join via the host, he doesn't spawn on the player 1 spot, I assume I'd have to manually spawn him there and set the player controller of the pawn right?

thin stratus Jul 18, 2018, 2:46 AM

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You could override the FindPlayerSpawn function in the game mode

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There you could get all actors or class PlayerSpawn (or PlayerStart?)

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Which should give you an array or size two

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Only thing you need then is some integer to count the amount of players

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And depending on that grab one of the spawn points

thin stratus Jul 18, 2018, 9:48 AM

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So for the simple act of having a Physics Actor that needs to properly replicate its position to the Clients, did anyone ever setup some sort of interpolation in C++ (or BP)?

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Cause the simple idea of VInterp the location isn't really good

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Or not even Physics, but Physics or normal actor

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We have two different types, a Ball and a Projectile (quite the big and slow moving one) and they both need to look smooth on the client, even with high ping

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And I really don't want to fight with the CMC to learn from that :D

drifting plank Jul 18, 2018, 9:50 AM

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Hello there 😃 ! I'm in trouble with a system which I need to design "an items system in network".

My current system works as described :

Player can loot an item (by passing by the loot manager (which contains a data table with all informations including an item ID)
Player can also have equiped item by default (without passing by the loot manager) so It doesn't have the ID to retrieve informations contains in the data table.

If I create a new manager to only store the data table independtly.
I still don't know how to link properly the blueprint reference of an item (contains in the data table). It needs to be updated when the data table change.

I just need to feedback what I have equiped by default and when I loot an item with the same system or a more complex but which handle these cases.

Anyone has already create an item system in network ? How have you do that ? Is my design bad ? Can I pass by an other system ?
Thanks in advance for the help. 😃

rose egret Jul 18, 2018, 10:10 AM

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is TickActor called client side on pawns that dont have PC> I mean their controller is not the current client.

proper olive Jul 18, 2018, 12:06 PM

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mornin folks

#

I'm having this massive wait for clients when they log in to the server before their controller is spawned, and since there's no controller, I can't add a "connecting" widget

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for now I've put a blackout post-process volume at 0,0,0 world position which works well enough, but I'd like to figure out why it's taking so long to spawn the controller if anyone knows where to look?

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I have that chart of gameplay framework startup order but yeah... should I just put delays on my game mode / game state beginplays or something?

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it's actually ON game state beginplay where I'm spawning the widget :/

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I have a feeling I'm gonna end up deleting this question in 30 seconds anyway lol sometimes putting it into words is the best way to figure it out 😄

rose egret Jul 18, 2018, 12:17 PM

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whats the difference between AActor::GetOwner and AActor::GetNetOwner ?

proper olive Jul 18, 2018, 12:24 PM

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well spawning the "connecting" widget on controller beginplay works the same as gamestate beginplay, also spawning it before/after the loadmap node only shows for the moment before the map loads

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looks like I have to decorate the 0,0,0 world location as a waiting room? 😄

urban dew Jul 18, 2018, 2:26 PM

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hoping someone might be able to help, if I play on my level, everything works fine, however if I start on a main menu, then load into my level, my character refuses to move at all, no errors at all. what could be the issue?

I have a main menu, which I then host server, when server starts host, it then loads the map, once I spawn in I can't move at all, however, if I skip the menu, and just spawn in the level straight away I can move.

open gazelle Jul 18, 2018, 2:40 PM

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@thin stratus so where do i set the version number 😃

twin sable Jul 18, 2018, 2:40 PM

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Hey, does anyone know why my server character's remote role might be showing up as AutonomousProxy when shouldnt it be SimulatedProxy?

#

📎 unknown.png

winged badger Jul 18, 2018, 2:41 PM

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it shouldn't be SimulatedProxy

twin sable Jul 18, 2018, 2:41 PM

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maybe im confused what GetRemoteRole() does

winged badger Jul 18, 2018, 2:42 PM

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if you had more clients

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then you could see only one is AutonomousProxy

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the one playing in that window/machine

twin sable Jul 18, 2018, 2:43 PM

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what do you mean? more client doesnt change it

📎 unknown.png

winged badger Jul 18, 2018, 2:43 PM

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on server everything is authority

#

on client, anything attached to the local playercontroller is autonomous proxy

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and anything not owned by it is simulated proxy

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so difference here would be in client window

twin sable Jul 18, 2018, 2:56 PM

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ok, thankyou

steady briar Jul 18, 2018, 3:11 PM

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can a non replicated custom event call a multicast function?

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i know im bad at this stuff so i started over, got variable replication to work now im trying a function and this is what i got so far

#

📎 unknown.png

#

simple explosion with a print. nothing after the switch works but no combination of the "Interaction Complete" functions replication settings change anything.

thin stratus Jul 18, 2018, 4:04 PM

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Yes it can

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But it depends on where the Event comes from

#

If it's called by a Client

#

then it won't get past the Switch

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And the Multicast wouldn't work

#

You need the server to call the event

#

@steady briar

steady briar Jul 18, 2018, 4:05 PM

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ya im trying to figure that out

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i deleted all my old stuff cuz it got cluttered and im trying to do really simple things this time

#

last time i made stuff look how i wanted, then tried to figure out the replication and stuff. this time im going the other way

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i think im doing what is shown in the function replication docs but i think the main difference is the very beginning. they use an overlap event, u said the server and client each do their own overlap for that right? so for them, auth is the server calling it

thin stratus Jul 18, 2018, 4:36 PM

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Yes

steady briar Jul 18, 2018, 4:37 PM

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so it must be something im doing that makes the server not know its going on right?

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im a lil lost because the client casts to the object, the object casts to the client, then the client casts back to the object. i dont know if the server is aware of any of it

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also not sure if the server needs to know about the initial interaction

zinc zephyr Jul 18, 2018, 4:59 PM

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sorry for crospossting but I realized here is better to ask: what is the correct way to authenticate player using online subsystem, I mean I what order functions need to be called on which objects?

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Is there some guide I can go through? I'm using Slate and CPP no blueprints

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What I would like to do is to have login form with username and password entered and verified by my server, after that continue with game flow, I'm using REST API and Bearer token

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@thin stratus I did found your networking compendium but I could not find anything in it dealing with autentificating players, there is PostLogin function but I would like to know how to chain functions properly so rest of OSS works as it should, after server reply I do plan to store token (i can control for how long it will be valid and refresh it on background as needed for other requests) I'm just not sure what place in UE is best to offer player login form and what function to call after that with regard to UE. GameSparks using UObject like manager on GameInstance for that, Steam does not deal with user authentification directly in-game...

nocturne copper Jul 18, 2018, 5:46 PM

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I got up the launching and joining dedicated portion on this guide last night.
https://wiki.unrealengine.com/Dedicated_Server_Guide_(Windows_%26_Linux)#7._Play_your_game_on_your_server
I am assuming that the way this is done is the dedicated is just running and the other two are supposed to be clients that just get dropped into the level.
Does the server have to have the map actually open or just as long as that command prompt is running it will just track the clients?

Dedicated_Server_Guide_(Windows_%26_Linux)

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Finally taking some time now and delving into the dedicated side of things

#

And reading though this forum as well just to double check on the learning's
https://forums.unrealengine.com/development-discussion/blueprint-visual-scripting/110236-dedicated-server-guide-engine-4-14

Unreal Engine Forums

Build powerful visual scripts without code.

worn nymph Jul 18, 2018, 6:10 PM

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that guide is a little outdated now and unfortunately epic have disabled editing for months and months now so i cant change it. what is it you are trying to do?

wintry ruin Jul 18, 2018, 6:30 PM

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Hi, I have a question about multipl;ayer. I have my dedicated server setup and when a player changes his traits (example changes hair style or equips an armor) I send this message to all other players, broadcasting the change. The problem is when the character joins the server, as I need then to send out all my traits to everyone with broadcast. Is this the proper way?

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I'm not sure if its a good or bad idea to send the broadcast to all players also when they are not visibile

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seems a bit of a waste

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are you guys broadcasting those changes yourlsef, or are you using another way? like adding components which are "replicated" by Unreal

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is there a performance difference between UE replication and broadcasting the message myself?

fringe dove Jul 18, 2018, 7:02 PM

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4.20: > New: Added Support with Rewindable Actors for replays.

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what are Rewindable Actors?

polar portal Jul 18, 2018, 8:10 PM

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I posted this in GDL but I'll post it here too, hopefully I can get this sorted tonight:

Can someone help me? I've been trying to make my game networked multiplayer for 2 days, it's a simple pong game but it's eluding me.

The Setup:

Menu Hud -> Host Game Button, Join Game Button
Host Game -> Open Level (Muliplayer Level) with listen.
Join Game -> cmd execute "Open 127.0.0.1".

Multiplayer Level setup:

One Ball, already in the level, doesn't move until the player array in gamestate has 2 players in it, will then start a countdown and move.
Two player starts. One Camera pointed downwards toward the field.

The multiplayer game mode has the following in it's blueprint: https://imgur.com/a/FIT3O5h

The result: https://imgur.com/a/bcVuB4y

Player on the right can move, player on the left, doesn't have the right camera, CAN move but his movement isn't replicated on the right, the ball however is moving on both.

Where am I going wrong here?
Player on the right is host, player on the left joined.

Imgur

charred crane Jul 18, 2018, 8:52 PM

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Does a server retain its listen status after a servertravel command?

regal hazel Jul 18, 2018, 8:55 PM

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https://docs.unrealengine.com/en-US/Engine/Networking/ReplicationGraph

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Aww yisss

thin stratus Jul 18, 2018, 9:08 PM

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@charred crane Yes

fringe dove Jul 19, 2018, 4:25 AM

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     Change 4024181 by Ryan.Gerleve

        Support the notion of Rewindable Actors for replays. These are actors that shouldn't be destroyed during scrubbing.

        #jira FORT-71396
        #AUTOMERGE using branch FNMain->DevNetworking of change#3908062 by Jon.Nabozny on 2018/02/24 11:59:27.```

dusty halo Jul 19, 2018, 4:25 AM

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What plugin do u use to store data jn database?

fringe dove Jul 19, 2018, 4:25 AM

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What does that mean exactly? I've never had actors disappear during scrubbing

dusty halo Jul 19, 2018, 4:25 AM

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*in

fringe dove Jul 19, 2018, 4:26 AM

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unless it was back to a point where they weren't spawned

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for anyone else interested, here's the main bool that controls it:

#

Actor.h

545b303834 (Ryan Gerleve         2018-05-04 10:11:42 -0400  195)        UPROPERTY()
545b303834 (Ryan Gerleve         2018-05-04 10:11:42 -0400  196)        uint8 bReplayRewindable:1;```

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hmm, it looks like when scrubbing back past a checkpoint it destroyed and recreated everything before. I never noticed that:

DemoNetDriver.cpp

    // Destroy all non startup actors. They will get restored with the checkpoint
    for ( FActorIterator It( GetWorld() ); It; ++It )

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so I guess this just makes scrubbing more efficient but you have to take care that the actor won't get messed up if it doesn't get begin play again etc.?

drifting plank Jul 19, 2018, 9:46 AM

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Hello ! Is that dangerous to replicate some actors which are parented ?
Because in my case, when my player moves, once the actor parented is hidden and redisplay, the parenting is broken. I didn't understand why and how to solve this issue...
Anybody can explain me how it works exactly ? :o

Thanks in avance 😉

twin juniper Jul 19, 2018, 11:41 AM

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I looked at the unreal tournament source, because i want to learn how to properly replicate custom movement. I saw that they made a few changes to how the replication works (FSavedMove_Character and struct FRepMovement to replicate movement more efficiently). Is this still relevant with new engine versions? Can i still gain more efficiency with this or is this neglectable nowadays? Thanks in advance

ancient ruin Jul 19, 2018, 11:55 AM

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p4v

rose egret Jul 19, 2018, 1:01 PM

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one question. does UE4 compress float Replicated Properties or RPC Parameter?

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I know that uint could be compressed but not sure about float 😐

steady briar Jul 19, 2018, 2:47 PM

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so if overlap events are triggered by client and server, how do i get a custom event to trigger like that too? if i replace my input with an overlap it seems to work, but none of the replication options work for the custom event itself

shut gyro Jul 19, 2018, 4:18 PM

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Apparently the Replication Graph is disabled on consoles because of splitscreen? Well, what if you don't need splitscreen on console?...

icy nacelle Jul 19, 2018, 5:20 PM

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Equipping an AI's weapon on spawn, running this (from the AI actor)
Works on singleplayer, not when playing as a client, any ideas?

📎 Capture.PNG

steady briar Jul 19, 2018, 6:11 PM

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if i cast to another bp does it make the player who casted to it its owner/authority?

drifting plank Jul 19, 2018, 6:24 PM

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@icy nacelle You want to equip the weapon and replicate it ?

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Why don't spawn the weapon on the server ?

icy nacelle Jul 19, 2018, 6:25 PM

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That's what the above is yes

drifting plank Jul 19, 2018, 6:26 PM

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No You spawn on each client

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Not on the server

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An actor marked as replicated which is spawned on server are spawned on all clients without multicast

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@steady briar You want to trigger an event on a server when you overlap a thing on server ?

steady briar Jul 19, 2018, 6:28 PM

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no, it works with overlap

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i need it to work with a custom event

drifting plank Jul 19, 2018, 6:28 PM

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Can you screen your BP ?

steady briar Jul 19, 2018, 6:28 PM

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it seems the server has no idea about anything im doing

drifting plank Jul 19, 2018, 6:28 PM

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Have you bind the event on client and trigger only on server ?

steady briar Jul 19, 2018, 6:28 PM

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well, which part? its relatively simple but at the same time complicated and i think thats my problem here

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ok so probably a good time to ask... "bind"? ive seen it but havent used it yet

drifting plank Jul 19, 2018, 6:29 PM

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When you trigger the event and when you receive the event

icy nacelle Jul 19, 2018, 6:29 PM

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@drifting plank but I am spawning it with a multicast?

drifting plank Jul 19, 2018, 6:29 PM

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Vyktory -> Screen where you trigger the event and the event itself

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grandmaMax -> Multicast spawn for each client but the entity is not linked between all clients

icy nacelle Jul 19, 2018, 6:29 PM

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You think I should just spawn it on server instead? I'm sorry, I don't understand what you're saying

drifting plank Jul 19, 2018, 6:30 PM

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If you spawn with a multicast, you will have some entities which are different on all clients (not replicated from the server). Maybe it's what you want.

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The actor doesn't spawn at all ?

steady briar Jul 19, 2018, 6:33 PM

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the way i have it going.. the character presses a button, starts a function that casts to an object on the ground, the object casts back telling the player to do an animation, when the animation is done it casts back telling it to run a "done" function. need shots of all of it?

icy nacelle Jul 19, 2018, 6:33 PM

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Yeah it doesn't appear in the world

drifting plank Jul 19, 2018, 6:34 PM

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Oh !

steady briar Jul 19, 2018, 6:34 PM

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also about grandmaMax's problem, couldnt equipment changes be a RepNotify? on rep notify, set mesh etc?

#

im dumb but thats how in my brain i was gonna handle it

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nowhere near that point yet though

drifting plank Jul 19, 2018, 6:35 PM

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If the weapon need to be display to all other players -> It needs to be spawn on the server (and marked as replicated)

steady briar Jul 19, 2018, 6:35 PM

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isnt repnotify done by the server?

drifting plank Jul 19, 2018, 6:36 PM

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If the weapon is only for the client. You just need to spawn it once for the client without multicast

#

Repnotify is used to persist informations.

#

So if a player disconnect, the informations will always be present

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And Repnotify is used for variables not functions

steady briar Jul 19, 2018, 6:37 PM

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i dunno ive only used repnotify for practice so far... made a random food list display o.O

drifting plank Jul 19, 2018, 6:37 PM

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If you want to replicates an array you can just put it as replicated

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If this array is important for the gameplay, you need a repnotify to persist it

steady briar Jul 19, 2018, 6:38 PM

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i did what the traffic light tutorial did

drifting plank Jul 19, 2018, 6:38 PM

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Yes ^^

steady briar Jul 19, 2018, 6:38 PM

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anywho i just thought it might work for that issue

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my issue though i dunno im stumped

drifting plank Jul 19, 2018, 6:38 PM

#

Repnotify is also lighter than replicated (which is updated frequently)

#

Very usefull for entity which change very rarely

steady briar Jul 19, 2018, 6:39 PM

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so... i made a class between actor and my useful stuff, its generic for all interactables

drifting plank Jul 19, 2018, 6:39 PM

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Like a light

steady briar Jul 19, 2018, 6:39 PM

#

📎 unknown.png

drifting plank Jul 19, 2018, 6:39 PM

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Yes

steady briar Jul 19, 2018, 6:39 PM

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this is all it does and wow that looks super zoomed in here for some reason

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i know what i have now doesnt work so i removed some junk but, in my character...

#

📎 unknown.png

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above this pic is just how i find the nearest object that im dealing with

drifting plank Jul 19, 2018, 6:40 PM

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You are on network so you need to use some functions which call the server and feedback the client

steady briar Jul 19, 2018, 6:40 PM

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server need not know about it

#

and then the object

#

📎 unknown.png

icy nacelle Jul 19, 2018, 6:41 PM

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@drifting plank So what you're saying is that I should run on server instead of run on server then multicasting?

steady briar Jul 19, 2018, 6:41 PM

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its all placeholder (i started over and wanted to keep it simple) before making it fancy

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it will print Pre Auth but not Post Auth in the mid there, so i guess that means the server doesnt know it is going at all

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ive tried all combinations of replication on each of the custom events i could, was hoping something would work and then i could figure out why. but noooope

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if i slap this in there it works

#

📎 unknown.png

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instead of where my function is called, so the difference being overlap vs custom event

drifting plank Jul 19, 2018, 6:47 PM

#

I made a scheme for you

📎 unknown.png

#

Client calls Server Event
Server do some logic
Server calls Multicast to feedback clients
Clients trigger some feedbacks depending the event called.

steady briar Jul 19, 2018, 6:48 PM

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i tried to follow the uhm... function replication one where they step on the button. mostly the same except they use overlap and i dont

#

if the overlap works replacing the 1st custom event i have, then that means that 1 spot is the problem right?

drifting plank Jul 19, 2018, 6:50 PM

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@icy nacelle For the actor which don't spawn it can be an issue with the collision which prevent to spawn
Normaly it will spawn !

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But it depends what you want

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Weapon replicated for all or only the client

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But I see that you have choose Always spawn so it's very strange :/

#

Maybe the function multicast is not called because you are not on server ?

icy nacelle Jul 19, 2018, 6:52 PM

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This is being called on an AI actor

#

So I think this may be the problem.

#

I'm not sure how to handle network operations on actors that are not the player controller / character / state.

drifting plank Jul 19, 2018, 6:54 PM

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Ai is on server normaly

icy nacelle Jul 19, 2018, 6:54 PM

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Yeah, so thats why I'm stuck at figuring out why this does not work.

drifting plank Jul 19, 2018, 7:11 PM

#

You can follow the execution of your blueprint here :

steady briar Jul 19, 2018, 7:14 PM

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@drifting plank so, client tells server to run the function, then it replicates? ive tried run on server and multicast and it stops at different parts but never gets to the end. overlap trigger does the whole thing

drifting plank Jul 19, 2018, 7:16 PM

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I will do a blueprint screen for you

#

📎 unknown.png

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@steady briar

#

The top part is a blueprint sample for a player like a character, a controller or any other actor which is OWNED by the player linked with the client you used.

#

The bottom part concers the actor which you want to interact with it. He is logicaly NOT OWNED by your client. So you need to trigger a server from outside (so our player in the top part).

#

I hope you have undestood a bit better !
If you have any questions. I'm here 😉

steady briar Jul 19, 2018, 7:32 PM

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it would be a cast to on the top though, right?

drifting plank Jul 19, 2018, 7:33 PM

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a cast to ?

steady briar Jul 19, 2018, 7:33 PM

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character telling object to do something

drifting plank Jul 19, 2018, 7:33 PM

#

yes

#

Pawn or character or something else inherited from pawn 😉

#

which is owned by a player controller 😃

#

By default you have a basic player controller which posseses your default pawn.

steady briar Jul 19, 2018, 7:37 PM

#

so based on my printing here.. it seems anything that says run on server does not work

drifting plank Jul 19, 2018, 7:38 PM

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You call the server function on the owning pawn, yes ?

steady briar Jul 19, 2018, 7:39 PM

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well, its after CastTo, like it would be in ur example

drifting plank Jul 19, 2018, 7:39 PM

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In my example I have regroup the two parts

#

But it's on two different actors !

#

You have do the same ?

steady briar Jul 19, 2018, 7:40 PM

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well on the top part ur not replicating ur function, but ur telling the other object to run on server. so i have a custom event, not replicated. cast to other object, run function on server

drifting plank Jul 19, 2018, 7:41 PM

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Exact, the first is not replicated. But it called a replicated event of an another actor (On server).

steady briar Jul 19, 2018, 7:42 PM

#

📎 unknown.png

#

this is my version of ur top part

#

📎 unknown.png

#

and this is the other object. i dont get a print

drifting plank Jul 19, 2018, 7:43 PM

#

Why you call the event from outside the character ?

#

Oh no

steady briar Jul 19, 2018, 7:43 PM

#

what do you mean?

drifting plank Jul 19, 2018, 7:44 PM

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I think it was a cast to character

#

We are on a character right ?

#

or a pawn ?

steady briar Jul 19, 2018, 7:44 PM

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character. the other bp is a rock actor

#

the goal is for the interactable object to be anything. talk to npc, pick up item, chop tree, whatever. as long as they have the same function in them it will call it

drifting plank Jul 19, 2018, 7:46 PM

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Yes I undestand ^^

steady briar Jul 19, 2018, 7:46 PM

#

so typically it would be Character --> Object --> Character --> Object for a complete interaction

#

its largely why im getting screwed up here i think

drifting plank Jul 19, 2018, 7:46 PM

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So if the call doesn't work. You need to call a server event on the client to call this event directly on the server

#

Like that

steady briar Jul 19, 2018, 7:48 PM

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this stuff hurts my brain...