#multiplayer | Unreal Source | Page 365

compact gulch Jan 11, 2018, 6:56 PM

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we ended up using ec2 now with a node.js... we're going to test this.. we might move to GoogleCloud soon and use the serverless node.js

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lol

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yeah it's annoying to set it up

thin stratus Jan 11, 2018, 6:57 PM

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@merry hemlock RepNotify is just a way to react to replication.
Setting a Variable to "Replicate" will send the value to the clients if the server changes it (not other way round).
RepNotify does the same + calling the OnRep function when the value arrives

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For you here, we use RepNotify, so you can react to the replicated text and set it to the Renderer

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@compact gulch Yeah heard of that approach. We use GameSparks + GameLift

merry hemlock Jan 11, 2018, 6:58 PM

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ah, otherwise I'd have to have some Tick or check of the variable's state

compact gulch Jan 11, 2018, 6:58 PM

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we sorta decided aginst gamelift due to the SDK requirement.

thin stratus Jan 11, 2018, 6:58 PM

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GameSparks does Matchmaking, asks GameLift to start a Server and send the Info, and then GameSparks passes that to the players and they connect

merry hemlock Jan 11, 2018, 6:58 PM

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RepNotify is a bit like binding widget text's to a variable function?

thin stratus Jan 11, 2018, 6:59 PM

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I wouldn't start comparing this to anything

compact gulch Jan 11, 2018, 6:59 PM

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yeah we're doign that. Gamespark matchamking , gets EC2 to launch server and pull players in.
we did extra logic to make sure we always have fresh instances available

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we hardcode the limit like 5 sessions per instance. when 3 is filled up we boot another instance.

thin stratus Jan 11, 2018, 6:59 PM

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It's what I said. Variable gets replicated to Client if Server changes its value.
If the value is 10 and server sets it to 11, the clients will receive that after a few milliseconds (ping).
OnRep just makes sure that, in addition to just replicating the variable, it also calls that function when the value arrives

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There is not much more to say about that

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@compact gulch Yeah that's basically what GameLift does anyway

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I didn't want to reinvent the wheel

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And the costs for the instances are the same iirc

compact gulch Jan 11, 2018, 7:00 PM

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have u tried google cloud?

thin stratus Jan 11, 2018, 7:00 PM

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GameLift has the scaling

compact gulch Jan 11, 2018, 7:00 PM

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we're going to explore both and compare the cost

thin stratus Jan 11, 2018, 7:01 PM

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It's client stuff. I haven't been able to test anything else

compact gulch Jan 11, 2018, 7:01 PM

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ohh

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i c ic

thin stratus Jan 11, 2018, 7:01 PM

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I know that both are expensive :D

compact gulch Jan 11, 2018, 7:01 PM

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makes sense

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i believe aws is more expensive than cloud

thin stratus Jan 11, 2018, 7:01 PM

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Can be

merry hemlock Jan 11, 2018, 7:01 PM

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ah...just trying to make sure i'm understanding it as well as I can

thin stratus Jan 11, 2018, 7:01 PM

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I'm just happy I figured out how to use GameLift from GameSparks

compact gulch Jan 11, 2018, 7:01 PM

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i've a few ppl who are using cloud . just for the IAAS part. they mentioned AWS is significantly more expensive

thin stratus Jan 11, 2018, 7:01 PM

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So I don't need the SDK

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Simple HTTP Requests were enough

compact gulch Jan 11, 2018, 7:01 PM

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right.. i see you're the authority on this topic

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eveywhere i search i see your name

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gamespark and gamelift

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haha

thin stratus Jan 11, 2018, 7:02 PM

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I was probably the only one at that time doing that

compact gulch Jan 11, 2018, 7:02 PM

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probably

thin stratus Jan 11, 2018, 7:02 PM

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Everyone else has either their own backend or is quiet about the process

compact gulch Jan 11, 2018, 7:02 PM

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i also see Ahsan Muzaheed a lot

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not sure if you've seen him a bit

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it's so hard to find someone who has skills on this..

it's ehtier you , RyanJon2040 , or the Muzaheed guy

thin stratus Jan 11, 2018, 7:03 PM

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Ha, Ryan

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Talked with him about it. He had the node.js solution. I explained him the GameLift solution iirc

merry hemlock Jan 11, 2018, 7:03 PM

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If I am spawning actors in the game mode, what is a good practice to get into for determine their spawn transforms? I don't want to hardcode values, so should I just GetAllActorsOfTag and then use the transforms of the different target points? Or is there a better way?

thin stratus Jan 11, 2018, 7:05 PM

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Na, that's fine

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You'd want to only get these once though

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So save them in an array

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And onPostLogin, simply do "Length of Array == 0? -> GetAllActorsOfClass"

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And if it's not 0, then well, you got points

merry hemlock Jan 11, 2018, 7:07 PM

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Is it normal to have a branch where you basically set aside all the server functions? That is where I'd do the initial GAAC

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So it will only run once

📎 unknown.png

thin stratus Jan 11, 2018, 7:08 PM

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Well this is not directly Server vs Client code

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You are simply doing "First Player" vs "Rest of Players" here

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And the FirstPlayer happens to be the Server when using ListenServers

merry hemlock Jan 11, 2018, 7:12 PM

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Which for me is going to be the use case

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again, this is mainly to get a few initial customers to get enough money to pay a professional

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somethign like this -

📎 unknown.png

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One of the other things I wasn't clear on is having an actor placed in the level do things to the players

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versus having the gamestate do it

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I have functions designed to teleport players

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Just want to make sure they replicate

winged badger Jan 11, 2018, 7:15 PM

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you don't need functions to replicate to teleport players

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just need bReplicateMovement = true

merry hemlock Jan 11, 2018, 7:17 PM

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that means if I can see each actor move around, if they get teleported that automatically works?

winged badger Jan 11, 2018, 7:18 PM

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you would need RPCs only if you wanted some additional stuff

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like waving at the other guy and then going poof

merry hemlock Jan 11, 2018, 7:21 PM

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but the teleport would work

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awesome

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How do events from gamestate replicate to client? I'm confused about ReplicateOnOwningClient? What if you want the gamestate to target a specific player controller?

icy nacelle Jan 11, 2018, 7:30 PM

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Hey all! I've got a slight problem here with server replication.
Currently reconfigurating the controls for when the players are aiming and not aiming. Everything works perfectly for the individual clients, but setting the actor rotation is not replicated to all clients. Is this because its an actor and NOT a pawn? Even though they're pretty much the same thing? Bit confused at where I'm going wrong. Hopefully someone has encountered and got over this problem before and might be able to shed some light on where I'm going wrong. Thanks!

📎 Untitled.png

merry hemlock Jan 11, 2018, 7:31 PM

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grandmaMax what is your character movement from? if it is from default pawn it won't replicate

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I see 3rd person so that's shouldn't be an issue though

mild hull Jan 11, 2018, 8:05 PM

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when you spawn the VR player, save that controller and than you can call any event that is set to execute on client by using that controller

merry hemlock Jan 11, 2018, 8:07 PM

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How would I access as a client if it is in game mode?

mild hull Jan 11, 2018, 8:12 PM

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📎 RPCToClient.png

merry hemlock Jan 11, 2018, 8:40 PM

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How do I get the reference to the VR controller if it was spawned in game mode? just cast to game mode?

mild hull Jan 11, 2018, 8:44 PM

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on server any actor can access it

merry hemlock Jan 11, 2018, 8:45 PM

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but if I'm a client playercontroller?

mild hull Jan 11, 2018, 8:46 PM

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the one on the server or client side?

merry hemlock Jan 11, 2018, 8:48 PM

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the client side

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if I want to make say, the server stuff do things, from the client's side....i'm using gamestate as my access point because most of my data is there

mild hull Jan 11, 2018, 8:51 PM

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put a event into controller, set it to execute on server and in that event you access the gamestate

icy nacelle Jan 11, 2018, 8:51 PM

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@merry hemlock Why dont it replicate if its default pawn?

merry hemlock Jan 11, 2018, 8:53 PM

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@icy nacelle Epic make the character movement module, for the character type actor, they made it replicate automatically

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they didn't do that for the default pawn

icy nacelle Jan 11, 2018, 8:53 PM

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Thats strange, because my movement was always replicated while using thirdpersoncharacter

merry hemlock Jan 11, 2018, 8:54 PM

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because you were using the right character movement

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try it with a default pawn and see what happens when you move

icy nacelle Jan 11, 2018, 8:55 PM

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I think I'm confused at how to use the default pawn?

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Like this?

📎 Untitled.png

merry hemlock Jan 11, 2018, 9:18 PM

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How do I reference other player controllers from the gamestate, (if i am a client) remember it is a unique test case

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That's my biggest problem I need to be able to target a specific player spawned by game mode, and sometimes these events need to be trigger from the client, on the gamestate

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Do I just pass the PC reference to game state?

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From the game mode

mild hull Jan 11, 2018, 9:25 PM

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you dont, you add Event that executes on server into the controller, on client side you call that in your own controller and in that event thats execute on the same controller but on serverside you can send infos to gamestate or the instructor

merry hemlock Jan 11, 2018, 9:30 PM

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I seem to be able to call events on the gamestate though (from the client)

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I just cant target the correct player because player controller 0 is always client

mild hull Jan 11, 2018, 9:34 PM

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than set 2 refs on the server when you spawn them (instructor and VR), but based on the nice drawing thats pinned here, gamestate is there but not owned by client

quartz vector Jan 11, 2018, 9:51 PM

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I don't think Server has PlayerController for every Player

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I thought PlayerState was for replicating things about Player

manic pine Jan 11, 2018, 9:52 PM

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server has every playercontroller, everyone has every playerstate

quartz vector Jan 11, 2018, 9:53 PM

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ah ok

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so using "GetPlayerController" with index 0 only works on Client i assume

manic pine Jan 11, 2018, 10:08 PM

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right, if its not splitscreen

merry hemlock Jan 11, 2018, 10:13 PM

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I might just use the Unreal Web Server instead of messing with replications...I've got way too much iteration to test

merry hemlock Jan 11, 2018, 10:58 PM

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I just need to figure out a way to KNOW on my gamestate what pawn references are where so I can target specific players (and do this from a client)

mild hull Jan 11, 2018, 11:02 PM

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create 2 variables, InstructorController and VRController, set them and use them to get to the owned pawn.

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if you want to send something to the instructor pawn you would call a event on your controller or pawn that is executed on server and from there send it to the instructor pawn, by using the ref to InstructorController

merry hemlock Jan 11, 2018, 11:04 PM

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I'm working on it, I'll put screenshots and maybe you'll see what I'm doing wrong

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my problem is I only seem to be targeting one player controller, the first one aka server

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ack, one plroble mis my pawn doesn't have input from the client

candid merlin Jan 11, 2018, 11:50 PM

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Hey guys, got a problem with actor replication that i can't wrap my head around for a few days. Any help would be much appreciated! From the PlayerBP i have a 'Run on Server' Event that spawns an actor (weapon) and i attach both meshes with Attach Component inside the WeaponBP, i also set the owner in WeaponBP (set owning pawn function is called from the PlayerBP). I have the FPS mesh set to only owner see and the 3P mesh set to owner no see. This all works perfectly when seen on the server. I geuss this is becouse the server is the owner. How do i fix it so it's propely shown for all connected clients?

merry hemlock Jan 11, 2018, 11:51 PM

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Did you check Replicate on teh Actor Class Defaults I mean?

candid merlin Jan 11, 2018, 11:53 PM

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Yep, replication seems to be working fine. I just don't know how to set the visibily options. Currently clients see the first person weapon version, not the third person one.

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If i run a dedicated server with 2 clients, it works fine for each client but when they look at eachother you see the first person mesh, not the third.

merry hemlock Jan 11, 2018, 11:54 PM

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https://www.youtube.com/watch?v=hlDWovBcu7E they do the EXACT thing you are talking about at about 15 minute mark

YouTube

Unreal Engine

Replication | Live Training | Unreal Engine

Announce Post: https://forums.unrealengine.com/showthread.php?139935 Ryan Gerleve, Sr Engine Programmer at Epic Games, dropped in to break down and explain U...

▶ Play video

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specifically they spawn and attached weapon and change it's visibility based on replication

candid merlin Jan 11, 2018, 11:54 PM

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Thought my search these last few days i watched that video, but i'll take another look.

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Yep that sadly doesn't help me. They don't fiddle around with Owner No See / Owner Only See problems 😦

merry hemlock Jan 11, 2018, 11:57 PM

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📎 unknown.png

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IsLocallyControlled I think is what you want to explore

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I suck at replication and you'll see probably about 100 questions from me in the next 24 hours but based on everything peopel have tried to help me with, I think IsLocal is what you need to look into

candid merlin Jan 11, 2018, 11:59 PM

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Thanks, i'll look into it.

mild hull Jan 12, 2018, 12:03 AM

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you only need to set owner no see and owner only see, exactly the same for everyone

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its the owner, the actor knows who owns him and changes based of that

candid merlin Jan 12, 2018, 12:04 AM

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That was what i was thinking aswell Mizuki. I just don't seem to be able to do so. I think this is becouse the owner of the spawnned weapons is the server?

mild hull Jan 12, 2018, 12:05 AM

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you set owner when you spawn

candid merlin Jan 12, 2018, 12:10 AM

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Could you tell me where i should be setting these? Here is all im using right now: https://imgur.com/AwRjhQy

Imgur

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Both the Set Owning Pawn and Attach to Owner functions are in the Weapon Base BP

mild hull Jan 12, 2018, 12:14 AM

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the spawn node has owner pin

candid merlin Jan 12, 2018, 12:15 AM

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do i set a reference to Self? i think i have tested that before

mild hull Jan 12, 2018, 12:20 AM

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self should work, isnt the 2nd attachToComp overriding the first?

candid merlin Jan 12, 2018, 12:21 AM

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Nope, when i remove the Owner No See / Only Owner See from the Weapon meshes i have 2 weapons in my hands on the server.

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Thanks btw Mizuki. Does anyone else have any idea?

compact gulch Jan 12, 2018, 3:49 AM

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we're facing an issue where DIrectX runtime is alreayd installed on a VM ( Aws instance ) , but unreal still says directx runtime component required.. any idea how to solve this.
@thin stratus see if you know about htis? we manage to install it , DXDiag is showing DX12 , restarted , but still unreal won't launch , asking for directx runtime

vital steeple Jan 12, 2018, 3:51 AM

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anyone know why a replicated actor appears to be destroyed by players correctly when i do a normal multiplayer test in PIE (with dedicated server), but when i host a server as a player, then join with my extra PIE clients, the same replicated actor is only seen as destroyed by the server?

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(the server that i create manually for my test is a dedicated server, though the player appears to spawn anyway)

merry hemlock Jan 12, 2018, 3:54 AM

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hey man

vital steeple Jan 12, 2018, 3:54 AM

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sup blake 😃

merry hemlock Jan 12, 2018, 3:55 AM

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Trying to think, I suck at replication

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Make a event that replicates on all controllers with a print message that says the Actor was destroyed

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and call that from whever you destroy the character

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just make sure you can get the events to all link up and replicate

vital steeple Jan 12, 2018, 3:57 AM

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hrmmm

merry hemlock Jan 12, 2018, 3:57 AM

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it's multicasted isn't it?

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when you destryo it

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show me the destruction

vital steeple Jan 12, 2018, 3:58 AM

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its not multicasted because its the server destroying an unowned replicated actor

merry hemlock Jan 12, 2018, 3:58 AM

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the actor itself is replicated but i'm not certain the destruction is

vital steeple Jan 12, 2018, 3:58 AM

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i thought i didnt have to multicast unowned replicated actor stuff

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hrm

merry hemlock Jan 12, 2018, 3:59 AM

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totally guessing here man, you could be completely right

vital steeple Jan 12, 2018, 3:59 AM

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i guess its weird that it works with PIE multiplayer?

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thats whats messing with me

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but as soon as i host a server it doesnt work

merry hemlock Jan 12, 2018, 4:00 AM

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what happens when you set the destroy event to multicast

vital steeple Jan 12, 2018, 4:00 AM

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testing now! 😃

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same thing

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weird

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but i see the building destruction notifications

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(like kill messages in CSGO or w/e)

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weird...

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damn... i really thought i had replication figured

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i think youre right though. you need to multicast on the replicated actor, which seems odd

merry hemlock Jan 12, 2018, 4:06 AM

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i hope someone corrects me if i'm wrong

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but i think it's because even though the actor is replicated, it's destruction is not

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like the server sees it as gone

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but the clients still do

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here's another test

vital steeple Jan 12, 2018, 4:07 AM

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yeah for some reason i thought that a replicated server owned actor would automatically replicate down

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becuase thsta how it works in PIE default mp test

merry hemlock Jan 12, 2018, 4:07 AM

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when the actor doesn't get destroyed, can you make it change ANYTHING on teh client's side, meaning, does any of the movements move or anything update, or does it just freeze

vital steeple Jan 12, 2018, 4:08 AM

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nothign happens

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hrm

merry hemlock Jan 12, 2018, 4:09 AM

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try this

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do a function that makes the actor send something to the client, like update a value continuously

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and see if that update keeps happening even if it is destroyed

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it SHOULD stop if the replication stops, (because the server destroyed the actor)

vital steeple Jan 12, 2018, 4:10 AM

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ok 😃

merry hemlock Jan 12, 2018, 4:11 AM

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again, i'm here on this channel because I have no idea what I'm doing

vital steeple Jan 12, 2018, 4:12 AM

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no worries, when it comes to replication, it seems like no one really knows

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😃

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yeah confirmed

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client thinks it still exists

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thats so weird

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it works fine for players

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just not for buildings

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both use the same health component

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i should probably just sleep on it. i been working on this for hours. thanks blake!

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your advice to verify what the client sees was helpful, verified that it exists and it wasnt just some other weird replication thing

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the actual destroy script isnt replicating for some reason

merry hemlock Jan 12, 2018, 4:20 AM

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np good luck

vital steeple Jan 12, 2018, 4:20 AM

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ill def let you know when i figure it out

merry hemlock Jan 12, 2018, 4:20 AM

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yes please

vital steeple Jan 12, 2018, 4:21 AM

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we should chat about your project as well. 😃

merry hemlock Jan 12, 2018, 4:27 AM

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trade show in less than a week

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I'm offering it for sale as a class, I have enough content to do that, Fire Chief's don't have to buy any hardware and I give them a credit for the class if they end up buying the hardware

vital steeple Jan 12, 2018, 4:28 AM

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well i hope it works out. its a cool concept

merry hemlock Jan 12, 2018, 4:28 AM

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thanks, i'll let you know how it pans out....no idea...I'm the only VR thing there as far as I can tell...

vital steeple Jan 12, 2018, 5:46 AM

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weird

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works fine in 4.18 but doesnt work in 4.17

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thats... unsettling?

reef ingot Jan 12, 2018, 11:20 AM

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Hey, I'm following the dedicated server guide on the wiki and trying to build for version 4.18 are there any specific target file instructions I have to follow

reef ingot Jan 12, 2018, 11:37 AM

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^^Ignore that i played around and think i've got it building

inner iris Jan 12, 2018, 12:31 PM

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@reef ingot usually good to check the corresponding ShooterGame build with whatever engine version, and see the targetfile they use there

ripe raptor Jan 12, 2018, 12:38 PM

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Anyone here had issues with spawned actors crashing PIE in multiplayer, in RepLayout.cpp

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RepLayout::InitFromObjectClass to be specific

old abyss Jan 12, 2018, 1:56 PM

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If I run two instances of my packaged game and CreateSession in one instance, and JoinSession in the other, it reports back that it was successful, but the two players can't see eachother. Is this purely a replication issue or is there more that I have to do to get MP working? If I play using the in-editor preview with 2 players selected, they both spawn correctly and can see eachother, which makes me think it's not a replication issue.

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Trying to JoinSession or DestroySession without first creating a session on either of the running games will fail, making me think they are successful in interacting withe achother somehow. One game knows that the other has created a session. Really new to networking, apologies for the question.

old abyss Jan 12, 2018, 2:13 PM

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Also if I CreateSession with game window A, and then JoinSession with game window B, then destroy session on game window A, B's player will respawn back at the start after 15 seconds or so. I don't know what to make of this, they are definitely communicating but can't see eachother in a packaged game. Any tips? EDIT: Fixed, I was missing an Open Level node with "listen" in the options

ripe raptor Jan 12, 2018, 2:27 PM

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apparently

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replicated variables in blueprints make PIE crash when debugging multiplayer

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how jolly

opaque tinsel Jan 12, 2018, 9:10 PM

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im running into a weird problem, my server see the client character playing the forward animation with its back towards the server player when the client is running towards the server player

manic pine Jan 12, 2018, 9:16 PM

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rotate mesh 180 degrees around Z?

opaque tinsel Jan 12, 2018, 9:47 PM

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but it works for the server, its just what the server sees the client

glossy wasp Jan 12, 2018, 10:14 PM

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@opaque tinsel Are you replicating the rotation in BP? Only position is replicated and thats if you check the box on the actor

manic pine Jan 12, 2018, 10:28 PM

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yeah but assuming hes using same pawn for client and server they should be equal unless he adjusts mesh rotation with hasauthority

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could it be there's already a pawn in your level that one of the playercontrollers take possession of, instead of using bp to spawn it

coarse condor Jan 13, 2018, 7:17 AM

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Alright, I’m going to be honest. I have no clue how to make a Multiplayer game in UE4. Can someone please help me out? I’m looking to make a multiplayer game that can be played over multiple computers that aren’t on the same network.

hazy haven Jan 13, 2018, 7:44 AM

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@coarse condor for a holistic solution, there are some good courses for ue4 multiplayer on udemy

inland sun Jan 13, 2018, 9:29 AM

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How can you delay a players spawn into the map until they finish loading? Im using world comp to allow spawning and teleporting to diffent areas. They spawn and begin to load even if they are not loaded and can cause them to fall thru the world.

coarse condor Jan 13, 2018, 9:34 AM

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Thanks @hazy haven

thin stratus Jan 13, 2018, 10:35 AM

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@inland sun Well, you can always set the DefaultPawnClass to None in the GameMode

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And then control spawning them yourself

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OnPostLogin in the GameMode gives you the PlayerController of a Player that successfully logged in and joined

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You can either spawn and possess the character there or save the Controller reference and do it later

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@coarse condor Simply read my Compendium

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It's pinned to this channel

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No need to instantly pay money on some courses

calm zenith Jan 13, 2018, 12:44 PM

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is it considered legit to sandbox two steam accounts on one computer just to do network testing? will I not get any of the accounts banned? Or maybe there is a better way to test?

coarse condor Jan 13, 2018, 1:16 PM

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@thin stratus how would I find a server online to use?

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Or do I use a hosting site?

quartz vector Jan 13, 2018, 2:26 PM

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where do I add PktLag=# to simulate network lag

jolly siren Jan 13, 2018, 2:49 PM

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@quartz vector https://www.unrealengine.com/en-US/blog/finding-network-based-exploits

Unreal Engine

Finding Network Based Exploits

Recently, I had an email conversation with a Gears of War fan about the differences in networking quality between each of the three games in the series. One thing that we can point to in terms of increasing the quality of the networking experience is our use of the Unreal Engine’s built in network simulation features.

quartz vector Jan 13, 2018, 2:49 PM

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yeah the PktLag stuff in that blog didnt work

jolly siren Jan 13, 2018, 2:49 PM

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it goes over 3 places you can put it

quartz vector Jan 13, 2018, 2:50 PM

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I tried console and defaultengine.ini

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and found forum post of peole saying it's not working and to just use "Clumsy"

jolly siren Jan 13, 2018, 2:50 PM

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it's always worked fine for me

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and I use it a lot

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what value are you setting it to?

quartz vector Jan 13, 2018, 2:51 PM

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I tried 120 and 1200

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someone said it's disabled for certain builds

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it looks to disable network commands on either
(UE_BUILD_SHIPPING || UE_BUILD_TEST)

jolly siren Jan 13, 2018, 2:52 PM

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you aren't doing this in the editor?

quartz vector Jan 13, 2018, 2:52 PM

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yeah im in editor

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I'm probably just doing something wrong

twin juniper Jan 13, 2018, 5:30 PM

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https://i.imgur.com/X2pUUX0.png

Imgur

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hey guys so like

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im trying to figure out how to make my setup reload the gun

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the montage needs to be a multicast

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but the issue is that

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we are reloading "twice"

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cauhsing the player to lose twice the number of bullets

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because its multicast

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is there a way to do this better?

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never mind

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i got it

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😉

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📎 unknown.png

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added this lol

thin stratus Jan 13, 2018, 5:38 PM

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@ANGUs GAMEs#1421 To host a Dedicated Server, you would need to rent a server where you execute the Server on.
ListenServers are Players who host themselves. Or you provide players with the DedicatedServer exe, and let them create their own

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@twin juniper To save nodes, you can always drag out the "MontageToPlay" (or other pins) pin and do "Select"

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And then plug the Enum into the Wildcare pin of the select node

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That way you only need one PlayMontage node

twin juniper Jan 13, 2018, 5:41 PM

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@thin stratus true

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but other than organizational purposes it doesnt actually make a difference right?

thin stratus Jan 13, 2018, 5:42 PM

#

Yes, right*

#

Also

#

You don't want to go back to the Server after the Multicast

#

The Multicast should be only for visualy

#

You can query the length of a Montage and put up a delay

#

It's helpful to learn a tiny bit of C++ to look through the shootergame weapons

#

For better organization, you should make one base class for weapons that handle all the shooting, reloading etc. and have variables for their animations etc.

#

Then you can simply create a child of that base and only need to fill in the reload montage in the class defaults

#

This way you don't have to go back to your code if you add a new, similar functioning weapon

twin juniper Jan 13, 2018, 5:44 PM

#

yea

thin stratus Jan 13, 2018, 5:44 PM

#

But only make a child and adjust the values

twin juniper Jan 13, 2018, 5:44 PM

#

thats what i did

#

but the montage is just separate

#

coz i only have 3 montage types

thin stratus Jan 13, 2018, 5:44 PM

#

Fair enough

twin juniper Jan 13, 2018, 5:46 PM

#

😛

agile crane Jan 13, 2018, 9:14 PM

#

Hey, can someone help me how to make an infection game mode? If you dont know how the game mode works let me explain: Normally 12 people are recommended to play in, two or 3 people start as an infected randomly, and the other ones are survivor, once you die you become infected, the last survivor will win. And it must check if you started as an infected last round, if you did 100% chance you won't spawn as an infected next round but if you died and become infected you could still spawn as an infected, but every one start as an infected randomly, and there's a timer in the game mode, about 4/8mins recommended.

#

If someone can help me then it will be sooo appreciate 😄 I've been trying to make that but I cannot find a way.

brittle sinew Jan 13, 2018, 9:26 PM

#

That's a very large question—if you can break it up into small parts that are somewhat easily attainable, you will both most likely be able to do it easier and also get help more easily 😃

quartz vector Jan 13, 2018, 9:27 PM

#

How do you set elements in a TMap?

agile crane Jan 13, 2018, 9:27 PM

#

You mean I should repeat in small parts?

quartz vector Jan 13, 2018, 9:27 PM

#

when I try with Replicated component turned on it crashes

severe widget Jan 13, 2018, 9:27 PM

#

Breaking the message into parts isn't what he means

agile crane Jan 13, 2018, 9:27 PM

#

oh

#

I don't really understand then

#

But do you at least read the full question? Or no?

severe widget Jan 13, 2018, 9:28 PM

#

lol the amount of text isn't the problem.

#

Its like

brittle sinew Jan 13, 2018, 9:28 PM

#

Yeah, I meant the scope of the question, not its literal size, hehe

severe widget Jan 13, 2018, 9:28 PM

#

Hey can somebody help me construct a space program? I have diet coke and mentos

quartz vector Jan 13, 2018, 9:29 PM

#

Ok I'm stuck here:

{
    UEquipItemComponent* EquipComp;
    if (UEquipmentFunctionLibrary::IsEquipItem(EquipItem, EquipComp)) {

        FEquipmentSlot& EquipSlot = *EquipmentSlots.Find(EquipComp->EquipmentType);
        if (EquipComp->EquipmentType == EquipSlot.EquipmentSlotType && !IsValid(EquipSlot.EquippedItem)) {
            AActor* EquippedItem = EquipComp->OnEquip();
            FEquipmentSlot Slot = EquipSlot;

            EquipSlot.EquippedItem = EquippedItem; // THIS IS WHAT CRASHES IT!!!!!!!

            return true;
        }
    }
    return false;
}```

#

EquipSlot.EquippedItem = EquippedItem crashes editor when running dedicated server and only when "EquipmentManagerComponent" is Replicated

#

otherwise this all works fine

agile crane Jan 13, 2018, 9:30 PM

#

uhhh, I mean, the game type in a nutshell is just two people start as an infected randomly, if that's what you guys are able to help me then please tell me how thanks. If I can at least make that its alright

quartz vector Jan 13, 2018, 9:30 PM

#

This is run from server by a wrapped Server, Reliable, WithValidation function

agile crane Jan 13, 2018, 9:30 PM

#

Like, how do I be able to get the two random players?

#

Its just what I'm basically asking.

brittle sinew Jan 13, 2018, 9:30 PM

#

See, that's a much better question to start with 😃

agile crane Jan 13, 2018, 9:30 PM

#

😃

#

Can you help me? PLease 😄

#

I'll be happy if someone does

fossil spoke Jan 13, 2018, 9:31 PM

#

@quartz vector It would help if you posted an little about the crash as welll.

quartz vector Jan 13, 2018, 9:32 PM

#

There are no errors

#

and when i debug in c++

#

no access violations or anything

fossil spoke Jan 13, 2018, 9:32 PM

#

Check your crash dumps?

quartz vector Jan 13, 2018, 9:32 PM

#

where's that at so i can check real fast

fossil spoke Jan 13, 2018, 9:32 PM

#

Saved folder

jolly siren Jan 13, 2018, 9:32 PM

#

probably just a NPE because you aren't validating EquipComp against null

quartz vector Jan 13, 2018, 9:33 PM

#

checking

#

{
    OutComponent = nullptr;
    if (!IsValid(Test))
        return false;
    OutComponent = Cast<UEquipmentComponent>(Test->GetComponentByClass(UEquipmentComponent::StaticClass()));
    return IsValid(OutComponent);
}```

agile crane Jan 13, 2018, 9:34 PM

#

Can anyone help me please what do I need to do to get two or 3 players randomly? I'm sorry if I'm asking too much but I tried but I have 0 idea how I could do it, I dm UE4 on twitter they read my messages but do not respond.

quartz vector Jan 13, 2018, 9:35 PM

#

let me generate another dump i cant find anything in this one

#

[2018.01.13-21.35.58:231][769]LogWindows: Windows GetLastError: The operation completed successfully. (0)

#

that;'s last line lol

fossil spoke Jan 13, 2018, 9:36 PM

#

@agile crane RandomIntInRange with 0 being the first element and your PlayerCount being the last?

#

Simple stuff really that can be easily googled

agile crane Jan 13, 2018, 9:38 PM

#

oh, I need to do random int in range and switch on int?

fossil spoke Jan 13, 2018, 9:38 PM

#

@quartz vector Yes its probably telling you that it crashed successfully lol, look further up the log.

quartz vector Jan 13, 2018, 9:39 PM

#

I typed some explicit language right before that function is called

#

and it outputed to log right before the crash

#

I see the item destroy on client due to replication

#

and then crash

agile crane Jan 13, 2018, 9:39 PM

#

Is there anything more I need to add after that? cause it prob won't check who will be being infected or smth. I'm kinda confused

fossil spoke Jan 13, 2018, 9:41 PM

#

You just answered your own question just then didnt you?

#

Check if they are infected?

#

If not, do something else

agile crane Jan 13, 2018, 9:41 PM

#

Wait, I'm gonna try smth if it cannot works I'll ask again 😃

fossil spoke Jan 13, 2018, 9:41 PM

#

This is why @brittle sinew asked you to expand your question into smaller more easily tackled problems

agile crane Jan 13, 2018, 9:42 PM

#

alright!

fossil spoke Jan 13, 2018, 9:42 PM

#

If you slice up your main problem into smaller parts it makes it ALOT easier to create an final solution by solving the individual parts seperatly instead of trying to figure out an grand master solution

agile crane Jan 13, 2018, 9:43 PM

#

okay

brittle sinew Jan 13, 2018, 9:43 PM

#

Also, if I were you, I would just try to map out what your flow needs to do, even outside of UE4

fossil spoke Jan 13, 2018, 9:43 PM

#

Think about the process of what would have to happen to an Player from beginning to end in order for the game to begin.

agile crane Jan 13, 2018, 9:44 PM

#

I'm confused right now, I added random int in range, what do I need to add more? A switch on int?

#

I cannot find the way to make it with switch on int really, I'm so lost

#

how to I switch on a random player? Cause I think I can make it if there would be a node like, switch on players who's connected, and with the random integer in range could switch to anyone and become infected

fossil spoke Jan 13, 2018, 9:52 PM

#

RandomIntInRange gives you an random integer, you use that integer to "select" an Player that has been designated as that number in the list of Players that are connected.

agile crane Jan 13, 2018, 9:53 PM

#

yeah I know

fossil spoke Jan 13, 2018, 9:53 PM

#

GameState holds an Array of PlayerStates, you could also use the GameMode to track incoming PlayerControllers

agile crane Jan 13, 2018, 9:53 PM

#

Oh

fossil spoke Jan 13, 2018, 9:53 PM

#

These both represent Players in the Server

#

You use that Random Integer to select one of those Players

#

PlayerArray->Get(RandomInteger)

agile crane Jan 13, 2018, 9:55 PM

#

Do I need to do like, Get game state>get player array ?

fossil spoke Jan 13, 2018, 9:55 PM

#

I dont know, its your code, try it out and see what happens.

agile crane Jan 13, 2018, 9:57 PM

#

This is what I did https://gyazo.com/e5f3439f6fa20b558c889b086528b151

Gyazo

#

I cannot find a player states with random int nor player array. Can you help please?

fossil spoke Jan 13, 2018, 9:59 PM

#

Ok mate seriously. This is easy stuff to google. You need to go back and watch some basic Youtube tutorials on working with Blueprint and get your fundamentals down.

agile crane Jan 13, 2018, 9:59 PM

#

uhhh, if you say so

#

is this a good start? https://gyazo.com/a41f5c4fe2a49066f25704e884dc40a4

Gyazo

fossil spoke Jan 13, 2018, 10:12 PM

#

Looks right to me

#

Only problem you have is, if you dont have 12 Players your going to get an Index Out of Range exception

agile crane Jan 13, 2018, 10:13 PM

#

I will setup a save file for the max player for sure, like, when I change the max player value it will save the value and I'll set the save to a variable and the variable will be the max player, hard to explain but I know the way.

#

Right now I'm trying to find a node to convert array to int or smth, is there a switch on array node that can exist? Just asking.

agile crane Jan 13, 2018, 11:16 PM

#

@fossil spoke Alright. I'm stuck since a long time, I searched for the solution but no help really, I really cannot find the way to make my thing, I don't know what to try anymore. I'm sooo confused and lost, if you could please help me or teach me cause I will never progress right now.

fossil spoke Jan 13, 2018, 11:17 PM

#

How new to UE4 are you?

#

When did oyu start using it.

agile crane Jan 13, 2018, 11:17 PM

#

I've been using UE4 since 2 years

fossil spoke Jan 13, 2018, 11:17 PM

#

Are you an programmer or an Artist?

agile crane Jan 13, 2018, 11:18 PM

#

both, my game aren't really big nor I tried multiplayer. My game are just fnaf fan game

fossil spoke Jan 13, 2018, 11:19 PM

#

You need to go back and research the fundamentals of Blueprint and Programming in general. I cant hold your hand throughout the entire process. This is really simple stuff and the only way you will learn is if you apply yourself and do the research.

#

I dont have the time to tutor.

agile crane Jan 13, 2018, 11:21 PM

#

I did all research but I cannot find a way dude! I searched like; Choose a random player or get players connected or get player array random and such

#

If you could just please tell me which node I need to put really quick it would be so appreciate dude! Its depressing for me

quartz vector Jan 14, 2018, 12:24 AM

#

@agile crane maybe you need to narrow your scope

#

If you can't isolate the pieces that you need to put into place at least at a foundational level

#

then you need to figure out why that is

#

my guess is you have a broad thought, don't know where to start, and jumped straight into Unreal with the first mechanic you could think of

#

and probably haven't put anything down on paper yet

agile crane Jan 14, 2018, 12:27 AM

#

uh. Maybe. Did not really understand what you mean tho

quartz vector Jan 14, 2018, 12:27 AM

#

I mean you do not go into Unreal thinking "I'm going to make a Zombie survival horror MMO"

#

you will end up all over the place

agile crane Jan 14, 2018, 12:28 AM

#

maybe, but there are some stuff I don't understand that I need help with, duh

quartz vector Jan 14, 2018, 12:28 AM

#

you need to narrow your scope down because then you will have more specific questions

#

like what?

agile crane Jan 14, 2018, 12:29 AM

#

Just look up on what I asked earlier

quartz vector Jan 14, 2018, 12:29 AM

#

I see questions that are along the lines of "Which button do I push to make an infection game"..not to be harsh

#

like someone else is going to design this for you

agile crane Jan 14, 2018, 12:29 AM

#

no

#

I was asking which node I need to put

#

but I asked for the infection game type earlier

quartz vector Jan 14, 2018, 12:32 AM

#

is it multiplayer?

#

i assume so

#

there is not a simple node to do what you are wanting to do I don't believe

#

it requires you to some how store which pawn class to spawn for each player

#

and then the Server should spawn these pawns where they should spawn and make the playercontrollers possess the correct Pawns

#

i BELIEVE this replicates, if not, you will be coding that too

#

how you do all of this is up to you

agile crane Jan 14, 2018, 12:35 AM

#

I know, I was just asking how can 2 random players out of 16 can spawn as an infected or just a different character

quartz vector Jan 14, 2018, 12:36 AM

#

You can get all actors of class "PlayerController" from server

#

that should get you an array of all the PlayerControllers on server

#

and you pick 2 randoms, spawn their zombies or whatever, possess them and take them out of the array

#

then spawn all the others as their characters

#

off the top of my head

#

u probably do this from GameMode

#

if you have spawn points...you can get all of those to determine where to spawn ppl

agile crane Jan 14, 2018, 12:38 AM

#

sounds like what I wanted to do, but on array I cannot find a random node or anything that can switch from the character

quartz vector Jan 14, 2018, 12:39 AM

#

📎 fetch.png

#

err pulled that on google...apparently it has some issue

agile crane Jan 14, 2018, 12:40 AM

#

oh okay

quartz vector Jan 14, 2018, 12:40 AM

#

save random int as local variable

#

and use it for outputs

#

but should work

#

and should be Length-1 for max

#

Also

#

Random Integer In Range

#

probably even easier

agile crane Jan 14, 2018, 12:41 AM

#

sounds good

quartz vector Jan 14, 2018, 12:41 AM

#

just right click in BP

#

turn context off

#

and type "Random Int" you find the same things

agile crane Jan 14, 2018, 12:41 AM

#

but what do I will need to use next? Switch on int?

severe widget Jan 14, 2018, 12:42 AM

#

so uh.

quartz vector Jan 14, 2018, 12:42 AM

#

what

severe widget Jan 14, 2018, 12:42 AM

#

If you took that macro and modified it so it didn't have a bug, you could use that to randomly get anything from an array of that thing.

#

there is no next step

#

for getting a thing

quartz vector Jan 14, 2018, 12:43 AM

#

There's a node already lol... "Random Integer In Range"

#

maybe didn't exist at the of that post

severe widget Jan 14, 2018, 12:43 AM

#

lmao

#

its a convienience macro

quartz vector Jan 14, 2018, 12:43 AM

#

yeah it gets the array element i believe

severe widget Jan 14, 2018, 12:43 AM

#

its not like you can't use it because a subset of its nodes exists

quartz vector Jan 14, 2018, 12:43 AM

#

ya

severe widget Jan 14, 2018, 12:44 AM

#

iunno good luck w/ him then

agile crane Jan 14, 2018, 12:45 AM

#

Its really hard, and so confusing to make that but with what you said I learned that you can put length for put random integer in range

quartz vector Jan 14, 2018, 12:45 AM

#

we all come from different backgrounds in these things but imo you shouldn't try to make a game at all right now

#

you should follow the tutorials on youtube

agile crane Jan 14, 2018, 12:46 AM

#

Okay then..

quartz vector Jan 14, 2018, 12:48 AM

#

good luck

agile crane Jan 14, 2018, 12:48 AM

#

thanks

quartz vector Jan 14, 2018, 3:05 PM

#

can you replicate Actor spawn from Client -> Server or only Server -> Client
like if u spawn something on client (doesn't spawn on server) and then call Server_SpawnThing(ClientSpawnedActorRef)
what happens
does Server spawn something and then replication spawns another on Client?

manic pine Jan 14, 2018, 3:08 PM

#

clientspawnedactorref has no meaning on the server

#

it'll either be null or just a meaningless pointer

#

what youd rather wanna do if going down this route would be to spawn on client, tell server to spawn, wait for client to replicate, then intercept that replication and e.g. make it invisible or whatever, and just have it reference your client-only object

#

alternatively replace client-only object with the newly replicated one

quartz vector Jan 14, 2018, 3:14 PM

#

that would be a "client authoritative" inventory so to speak?

#

I'm either going to go a route like that, or spawn a DummyItemVisual on client add...like a simulated Add

#

this thing pulses

#

and when same function is called on server, it actually adds item, which would replicate to client and tell inventory UI to re-build widgets

#

which would remove the dummy visual and replace it with real one

#

not sure which system is better....

#

essentially the Server is "holding" the items pending Release

manic pine Jan 14, 2018, 3:18 PM

#

client authoritative inventory sounds dangerous, since you could potentially let clients crash server

quartz vector Jan 14, 2018, 3:18 PM

#

yeah

manic pine Jan 14, 2018, 3:18 PM

#

but doing 'client prediction', like ACharacter does for movement, is fine obviously

quartz vector Jan 14, 2018, 3:18 PM

#

seems like that's a more difficult approach

#

in that my my inventory bags will have some sort of access time that is server auth'd

#

nothing crazy, just don't want a twitch inventory

#

so I have to show something to illustrate this to begin with

#

plus, I don't know how you would intercept Server replication and swap client and server item...seems like a lot of cleanup that isn't needed with this other approach

#

with same result to user

#

"Dragged item...item pulses for like half a second... item adds"

manic pine Jan 14, 2018, 3:21 PM

#

you might just want to let client alone handle access time here...

#

it could be hacked so client can access inventory immediately, but so it could with server auth as long as client actually has the inventory data

#

unless you put checks on moving/using objects(to see if inventory is open on server)

quartz vector Jan 14, 2018, 3:22 PM

#

on client the item wasn't going to actually be added at all

#

FInventoryItemInfo was going to be put into a ItemsPendingDrop Array

#

so not actual item just the image/size data

#

this was going to generate a false Widget showing where Item is being added

#

while sending the request to server, which does all of the validation

manic pine Jan 14, 2018, 3:23 PM

#

right, but the client could still say he moved it to the server without opening inventory

quartz vector Jan 14, 2018, 3:24 PM

#

that happens too when picked up from world

#

no UI open

manic pine Jan 14, 2018, 3:24 PM

#

yeah

quartz vector Jan 14, 2018, 3:24 PM

#

but ItemsPendingDrop would be stored on the ItemContainerComponent

manic pine Jan 14, 2018, 3:24 PM

#

anyway brb, off to dinner

quartz vector Jan 14, 2018, 3:24 PM

#

so it's active even when out of UI

inland sun Jan 14, 2018, 5:07 PM

#

If Anyone is available to answer a few questions for me on some basic stuff in UE4 multiplayer please DM me. I am trying to get going in the right direction to get replication learned and so forth to fix my multiplayer project.

brittle sinew Jan 14, 2018, 5:12 PM

#

I reckon you'll get both more eyes on the question and more help if you ask in here 😃

#

(plus, it might help others who see it)

winged badger Jan 14, 2018, 7:16 PM

#

i am using a seamless travel in my MP game, however, if the client manages to load the map before the host does none of the actors placed in the level are in sync, any ideas?

thin stratus Jan 14, 2018, 7:20 PM

#

The Server shouldn't be able to load the map before the host o.o

#

Are you sure you are still connected properly?

winged badger Jan 14, 2018, 7:20 PM

#

yes, and late joiners have no problems

#

actors spawned in the level work ok as well, for all clients

thin stratus Jan 14, 2018, 7:23 PM

#

That I haven't heard of yet, sorry

twin juniper Jan 14, 2018, 8:29 PM

#

hey whats cheaper for a mmorpg, more peformance friendly. 1. Tree animated by Shader. 2. Tree baked animation...

bitter oriole Jan 14, 2018, 8:35 PM

#

Shader animation ?

#

But that's a strange request

#

You'll have millions of larger issues before you get to that

quartz vector Jan 14, 2018, 8:42 PM

#

Why is my Server reliable function not calling from reference in UMG?

mild hull Jan 14, 2018, 8:43 PM

#

umg is client only

quartz vector Jan 14, 2018, 8:44 PM

#

Oh you can't even call Server function?

#

📎 unknown.png

#

like this isn't allowed?

mild hull Jan 14, 2018, 8:44 PM

#

is itemcontainer a widget?

quartz vector Jan 14, 2018, 8:44 PM

#

no that is a Component

mild hull Jan 14, 2018, 8:44 PM

#

thats ok

quartz vector Jan 14, 2018, 8:45 PM

#

the Server function doesn't even call

mild hull Jan 14, 2018, 8:45 PM

#

does the server know that you own that component?

quartz vector Jan 14, 2018, 8:46 PM

#

good question, how on earthw ould i know that

#

similar code works from a UObject I have

mild hull Jan 14, 2018, 8:47 PM

#

who created the component

quartz vector Jan 14, 2018, 8:47 PM

#

Oh wait

#

📎 unknown.png

#

this runs SERVER_TryAddItem which spawns the inventory item and adds it

thin stratus Jan 14, 2018, 8:49 PM

#

Component needs to be Replicated and set on an Actor that the Client owns

quartz vector Jan 14, 2018, 8:49 PM

#

                                                                        UItemContainerComponent * OriginItemContainer)
{

    if (CanAddAt(Item, CompartmentIndex, SubCompartmentIndex, SlotIndex)) {
        if (IsValid(OriginItemContainer)) {
            OriginItemContainer->Remove(Item);
        }
        TryAddAt(Item, CompartmentIndex, SubCompartmentIndex, SlotIndex);
    }
    
}```

thin stratus Jan 14, 2018, 8:49 PM

#

Otherwise Server RPCs are dropped

quartz vector Jan 14, 2018, 8:50 PM

#

let me double check how the actors are setup

#

They're all setup like this:

📎 unknown.png

#

and components are replicated

#

Now I'm not sure who owns these at this point lol

#

Server spawned them all

thin stratus Jan 14, 2018, 8:53 PM

#

Client owned is usually the Controller

#

And everything controller owns

quartz vector Jan 14, 2018, 8:54 PM

#

Ahh i never set an owner i dont think

thin stratus Jan 14, 2018, 8:54 PM

#

Means if the Server spawns it, you need to give it the Controller of the CLient as owner

quartz vector Jan 14, 2018, 8:54 PM

#

or i did but i didnt pay any attention to it

thin stratus Jan 14, 2018, 8:54 PM

#

This is not a container that sits somewhere in the world that multiple people at the same time can loot or?

quartz vector Jan 14, 2018, 8:54 PM

#

not at this point no

#

it's in a player inventory

#

if (GetOwner()->Destroy(true, true)) {
return Cast<AActor>(GetWorld()->SpawnActor<AInventoryItem>(InventoryItemClass, FVector(0.f, 0.f, 0.f), FRotator::ZeroRotator));
}

#

but yeah i didn't set any owner

#

this runs from server

thin stratus Jan 14, 2018, 8:55 PM

#

Alright, cause you should always split your Inventory into "Inventory" and "Manager"

#

Where the Manager sits on the PlayerController and just gets "InventoryA" and "InventoryB" passed and performs the moving of items etc

mild hull Jan 14, 2018, 8:55 PM

#

and cant you set it to only relevant to owner?

thin stratus Jan 14, 2018, 8:55 PM

#

So you can always go from UI to Server

quartz vector Jan 14, 2018, 8:56 PM

#

i do have an InventoryControllerComponent

thin stratus Jan 14, 2018, 8:56 PM

#

Cause owner can only be one person at a time and a chest/container that two people are working on would then break

quartz vector Jan 14, 2018, 8:56 PM

#

but i think it's on the Character right now...need to move it to PlayerController

#

it just adds references to all of the Equipped Item's with ItemContainer components on them

#

for easier access

#

but I was going straight through the Container through the UI

#

makes sense

thin stratus Jan 14, 2018, 8:57 PM

#

Yeah, if that container is on the Player, no problem

#

If it's on a chest that the Server or only one person at a time can own, you are f*cked

#

Cause then only one player at a time can own and work with it

quartz vector Jan 14, 2018, 8:57 PM

#

it's on an Actor

#

shit

#

However...

thin stratus Jan 14, 2018, 8:57 PM

#

You need a Manager class that you pass teh Container reference

quartz vector Jan 14, 2018, 8:58 PM

#

this is a newly spawned Actor so can I set a different Owner?

thin stratus Jan 14, 2018, 8:58 PM

#

Which would sit on the Controller

#

You can

quartz vector Jan 14, 2018, 8:58 PM

#

so let me tell you the events that happen

thin stratus Jan 14, 2018, 8:58 PM

#

You could do that on overlap with a collision or linetrace etc

quartz vector Jan 14, 2018, 8:58 PM

#

all of these have ItemContainerComponents to make this simple

#

EquipItem_World is already present in the level

#

Player interacts with it...SERVER_TryEquip is called

#

Item_Equip is created and EquipItem_World is destroyed by server and it is equipped

#

so PIckup is similar to that

#

it is routed through server which calls some functions to convert it to an Inventory item basically

#

so if I understand what you are telling me

#

When the Server spawns this new item with and ItemContainer and equips it

#

the client doesn't own it or something?

#

and therefore can't work with it through UI?

#

and the SERVER rcp's on ItemContainer will be dropped

#

And this works because it is routing through possessed Character's "InventoryController" instead of directly with ItemContainers?

📎 unknown.png

mild hull Jan 14, 2018, 9:05 PM

#

cant you test with getOwner?

thin stratus Jan 14, 2018, 9:05 PM

#

📎 unknown.png

#

📎 unknown.png

#

Like this, it doesn't matter if it's on the Player or some actor

#

You always root your calls through the manager on the PlayerController that allows ServerRPCs

#

Given "Container" and "PlayerInventory" are the same base component class

#

@quartz vector

quartz vector Jan 14, 2018, 9:07 PM

#

they are not same base class

#

my Containers are just "ItemContainerComponents" that I add to things

#

if it also has an EquipItemComponent it can be equipped

#

and when Equipped to the EquipmentManagerComponent...this event is broadcasted

#

and picked up by my InventoryControllerComponent

thin stratus Jan 14, 2018, 9:08 PM

#

Hm, well you can always add different events to the manager

#

And handle the containers differently

#

But I would root it via PlayerController

quartz vector Jan 14, 2018, 9:08 PM

#

so if the equipped item has an ItemContainerComponent...then InventoryController makes a reference to it

thin stratus Jan 14, 2018, 9:08 PM

#

Easiest thing

quartz vector Jan 14, 2018, 9:08 PM

#

so move my InventoryController to PlayerController

#

and then change the UI to work through there instead of directly with Items?

thin stratus Jan 14, 2018, 9:09 PM

#

Yeah would say so

#

Then you get rid of the owner problem

quartz vector Jan 14, 2018, 9:09 PM

#

cool

#

so what happens on SpawnActor

#

if you don't give it an Owner

thin stratus Jan 14, 2018, 9:09 PM

#

Server owns it

quartz vector Jan 14, 2018, 9:09 PM

#

so that's only fine if you're interacting from the server

#

to the server owned thing

#

but UI is client?

thin stratus Jan 14, 2018, 9:10 PM

#

Server owned Actors only work with Multicasts

#

Client and Server RPC don't work

#

Client not, as there is no owning client

#

And ServerRPC not, as the client needs to own the actor for that

quartz vector Jan 14, 2018, 9:10 PM

#

ahh ok cool

#

great information here...im kinda new to the MP stuff

thin stratus Jan 14, 2018, 9:11 PM

#

Read my compendium :P

#

Just saying

mild hull Jan 14, 2018, 9:11 PM

#

didnt you read his bible or at least the first 12 pages after that it only repeats everthing until close to the end

quartz vector Jan 14, 2018, 9:12 PM

#

where is it?

#

i only read the wiki articles on replication

thin stratus Jan 14, 2018, 9:12 PM

#

Pinned to this channel

#

gotta scroll a bit in the pinned messages

quartz vector Jan 14, 2018, 9:46 PM

#

@thin stratus hah.. got it working thanks to your help: https://youtu.be/D3462lZuVbo

YouTube

alg0801

Inventory re-design: Working on Replication

▶ Play video

#

I just need to get the delegates hooked back in to refresh it

#

thanks a ton i would have never figured that out on my own

wide chasm Jan 14, 2018, 10:09 PM

#

I've got multiplayer set up with advanced sessions, I have a physics object in my world and it is different for each players, how would I fix this?

#

player*

thin stratus Jan 14, 2018, 10:19 PM

#

You can try setting it to replicate movement

#

The session plugin shouldn't have anything to do with that

wide chasm Jan 14, 2018, 10:22 PM

#

Hmm, how would I do that?

acoustic aspen Jan 14, 2018, 11:00 PM

#

bReplicateMovment

wide chasm Jan 14, 2018, 11:27 PM

#

Doesn't work :/

quartz vector Jan 14, 2018, 11:44 PM

#

is there a standard term for a "Dummy" object that represents something else that will happen in future?

#

my Inventory Add is done in 2 steps: Client calls some Simulation of Add function that instead of adding the item to inventory, generates a DataObject with some basic data.

#

If this exists, it means the inventory is handling an item and cannot process other items

#

2nd: Server_AddItem function is called to perform actual item add

severe widget Jan 14, 2018, 11:47 PM

#

TransientPlaceholder kappa

quartz vector Jan 14, 2018, 11:47 PM

#

this replicates inventory back to player after same duration timer

#

lol

#

I might actually use that

severe widget Jan 14, 2018, 11:47 PM

#

Not sure if there's a standard term, sorry.

quartz vector Jan 14, 2018, 11:47 PM

#

TransientItemPlaceholder

severe widget Jan 14, 2018, 11:48 PM

#

Just so long as you have a field called PlaceholderName, you know, so you can name them.

quartz vector Jan 14, 2018, 11:48 PM

#

rofl

#

TransientHandledItem maybe?

#

Now what would you call a function that is intended to be ran by the client on the client

severe widget Jan 14, 2018, 11:53 PM

#

dangit i blew it

quartz vector Jan 14, 2018, 11:53 PM

#

before the SERVER_functions are run

severe widget Jan 14, 2018, 11:53 PM

#

anyway uh.

#

I dunno, why do you need a descriptor for that?

quartz vector Jan 14, 2018, 11:53 PM

#

because when i don't name things well I get shit in here

severe widget Jan 14, 2018, 11:54 PM

#

Well I mean you obv name the func

#

but like

#

CLIENT_PREREP__Name is ridiculous.

quartz vector Jan 14, 2018, 11:54 PM

#

true

mild hull Jan 14, 2018, 11:55 PM

#

TransientFunctionToCreateTransientItemUntilServerRemoveIt() like this?

severe widget Jan 14, 2018, 11:55 PM

#

there it is

#

see, nice and readable.

quartz vector Jan 14, 2018, 11:55 PM

#

perfect

severe widget Jan 14, 2018, 11:55 PM

#

does what it says on the tin

#

Could use Predict

#

PredictItemAdd

wide chasm Jan 14, 2018, 11:59 PM

#

📎 unknown.png

#

when i go to the object locatation as pawn 2 it teleports me somewhere random, but i'm standing on the object from pawn 1's view

#

any help?

#

I have replicate on and replicate movement

#

📎 unknown.png

#

and the object shows up in different locations

mild hull Jan 15, 2018, 12:08 AM

#

is object supposed to be visible or do anything?

wide chasm Jan 15, 2018, 12:09 AM

#

nope

#

wait

#

yes

#

its supposed to be visible and have physics enabled

mild hull Jan 15, 2018, 12:12 AM

#

did you set replication for it?

wide chasm Jan 15, 2018, 12:12 AM

#

yes

wide chasm Jan 15, 2018, 12:31 AM

#

you there?

#

Fixed it

mild hull Jan 15, 2018, 12:35 AM

#

great what was it?

wide chasm Jan 15, 2018, 12:37 AM

#

I had to add the object and set replication after multiplayer as set up

calm plaza Jan 15, 2018, 2:38 AM

#

hey smart people, are custom functions auto replicated or nah?

#

i thought they were but clients arent applying impulse to a mesh along with the server.

wide chasm Jan 15, 2018, 4:27 AM

#

How do you get the location of player 1 or player 2

compact gulch Jan 15, 2018, 7:23 AM

#

hey guys. does anyone knows a way to tear off worlds? meaning disconnect but let client stay in world

warm arch Jan 15, 2018, 7:23 AM

#

?

compact gulch Jan 15, 2018, 7:24 AM

#

was that question mark for me ? or Normercy or hexia?

warm arch Jan 15, 2018, 7:24 AM

#

Ellaborate

compact gulch Jan 15, 2018, 7:24 AM

#

oh

#

so i want the server to leave

#

but client to stay in world after game

#

u know how TearOff() works for actor

#

i wonder if they can be done for entire world

warm arch Jan 15, 2018, 7:26 AM

#

It could (maybe) be done but I don't really see a real efficient way of going about it

zenith yarrow Jan 15, 2018, 8:01 AM

#

Has anyone here used UDPEcho() to ping anything in ICMP.h before ? I would like to know if it is reliable or unreliable ?

manic agate Jan 15, 2018, 9:46 AM

#

Guys, how many objects can be replicated until it becomes too laggy? I know that the anwser depends on many things, but generally what's the range? 10, 100, 1000? (in your experience, of course)

thin stratus Jan 15, 2018, 9:52 AM

#

As you said, depends on many things.

#

One object, if you have too much data in it

#

What you should check is how much bandwidth is fine to be used and the see what your actor would consume

manic agate Jan 15, 2018, 10:03 AM

#

It was actually more of a curiosity. I was thinking of Fortnite and was wondering how it worked there, with a hundred players and a big world

thin stratus Jan 15, 2018, 10:11 AM

#

They improved the system quite a lot

#

There is a blog post about it

#

They push these updates with 4.19

#

Check the latest pinned message of this channel

#

@manic agate

manic agate Jan 15, 2018, 10:27 AM

#

@thin stratus thanks, I'll check it out!

#

Actually now I've got a "real" question. I've got a UObject derived class which is replicated and used in a replicated AActor. It works fine, but now I wanted the UObject class to replicate another UObject. Is that possible?

thin stratus Jan 15, 2018, 10:28 AM

#

Don't think so

#

You always need an actor to drive the subobject replication afaik

#

But I'm not 100% sure

lost fulcrum Jan 15, 2018, 10:31 AM

#

Can I serialize specified fields in UObject ? It worked good with just iteration over class fields and checking its metas but only with editor. If the only way is like write custom serialization method like MySerialize(FArchive& Ar) then what is the best way to specify blueprint fields in final BP classes ?

manic agate Jan 15, 2018, 10:31 AM

#

@thin stratus what if I put as owner of the new UObject the same Actor?
I mean, something like this:
Actor -> UObject1, with Actor as owner
UObject -> UObject2, with Actor as owner

thin stratus Jan 15, 2018, 10:32 AM

#

Don't you need to actually specify the UObject in the Actors replication method?

#

Can't remember what the name is

#

The one where you place the DOREPLIFTIME macros in

manic agate Jan 15, 2018, 10:36 AM

#

You're right

#

I tried a different approach and seems to work

lost fulcrum Jan 15, 2018, 10:37 AM

#

My current approach in inventory replication is just writing all or partial slots of UObjects into FArchive with that custom serialization method and sending it through Client RPC as TArray<uint8>. I just need to control what is being replicated inside each item class

manic agate Jan 15, 2018, 10:40 AM

#

This is my actor, which overrides the ReplicateSubobjects() method that replicates the subobjects:

bool AUserPawn::ReplicateSubobjects(class UActorChannel *Channel, class FOutBunch *Bunch, FReplicationFlags *RepFlags)
{
    bool wroteSomething = Super::ReplicateSubobjects(Channel, Bunch, RepFlags);

    if(MyUObject1 != nullptr)
    {
        wroteSomething |= Channel->ReplicateSubobject(MyUObject1 , *Bunch, *RepFlags);

        wroteSomething |= MyUObject1 ->ReplicateSubobjects(Channel, Bunch, RepFlags);
    }

    return wroteSomething;
}

Then in my UObject1 I manually added the ReplicateSubobjects() method (it doesn't override anything):

bool MyUObject1::ReplicateSubobjects(class UActorChannel *Channel, class FOutBunch *Bunch, FReplicationFlags *RepFlags)
{
//    bool wroteSomething = Super::ReplicateSubobjects(Channel, Bunch, RepFlags);
    bool wroteSomething = false;

    if(MyUObject2 != nullptr)
    {
        wroteSomething |= Channel->ReplicateSubobject(MyUObject2, *Bunch, *RepFlags);
    }

    return wroteSomething;
}

#

I've tried and in the client the MyUObject2 isn't null anymore, yay!

#

This way I can replicate any UObjects from inside UObject1, and the owner Actor has no knowledge of this

#

(of course, I've omitted the parts where I do the DOREPLIFTIME macro thing)

thin stratus Jan 15, 2018, 10:47 AM

#

Ah well yeah, that's what I mean though

#

Your Actor needs to kinda drive it :D

manic agate Jan 15, 2018, 10:49 AM

#

That's right, I've misunderstood what you said 😅

manic agate Jan 15, 2018, 11:20 AM

#

@thin stratus I need your help once more. As far as you know, is it possible to call RPC functions from UObject derived classes which are replicated?

#

I'm trying right know with a Server RPC, but it always gets executed on the client

#

As far as I know, if there are problems then I should receive a message in the log telling me that the RPC is getting dropped, but here I don't get any messages and the functions is executed locally

thin stratus Jan 15, 2018, 11:22 AM

#

You should try setting the owner of the UObject to the Player

#

if it still drops, then I'd say no

#

But I mean, you could place a ServerRPC in the Actor and just pass the Object along

lean river Jan 15, 2018, 11:23 AM

#

Nop uobjects cant send rpcs

manic agate Jan 15, 2018, 11:24 AM

#

The owner is already the Player, but it doesn't matter. Also, I would like to not use the Actor itself for calling the RPC, otherwise I should place A LOT of functions in the Actor's code which are really not meant to be there

lean river Jan 15, 2018, 11:24 AM

#

Atleat i have a big state system which based on uobject

#

I was not able to send rpc even if owner was playerpawn, controller or whatever

#

So i can confirm uobjects cant send rpcs

#

But uobjects can replicate subobjects, i do this in my system.. i saw you asked this

manic agate Jan 15, 2018, 11:28 AM

#

Thanks Amph. Have you find a workaround for calling RPC from your uobject?

lean river Jan 15, 2018, 11:29 AM

#

Impossible to do that, because actors open actorchannel or rpc try to use owners actorchannel

#

Uobjects do not implement owners actually i think

#

They have only outers

mild hull Jan 15, 2018, 11:31 AM

#

cant you use a actor component that manages all rpcs for the uobject?

manic agate Jan 15, 2018, 11:32 AM

#

True, maybe just inheriting from UActorComponent would work in my case

lean river Jan 15, 2018, 11:33 AM

#

Yup i do this too..
I have a manager component which handle rpcs

#

Actually im sure rpcs can be implemented to uobjects

#

Simple actor component inherit from uobject

#

Just you need figure out how epic implements networking interface

#

Ahhhaahha i found that... maybe

#

Uobject have a virtual function "callremotefunction"

manic agate Jan 15, 2018, 11:41 AM

#

I'm trying too to make it work on uobject

#

I just tried overriding "callremotefunction", with no luck

#

It never gets called!

lost fulcrum Jan 15, 2018, 11:42 AM

#

shouldnt it be NetAddressable to do such stuff ?

lean river Jan 15, 2018, 11:42 AM

#

I guess yes

manic agate Jan 15, 2018, 11:43 AM

#

Probably yes

lost fulcrum Jan 15, 2018, 11:44 AM

#

anyway... Is anyone ever worked with reflection ?

lean river Jan 15, 2018, 11:44 AM

#

And you need override getfunctioncallspace too

#

I think

manic agate Jan 15, 2018, 11:52 AM

#

@lean river you're right! I just tried pasting the implementation of those 2 functions from UActorComponent and it works (well kind of, it tells me that there is no owning connection for the UObject's outer, but it's a step forward). Going to launch and I'll keep trying later 😃

lost fulcrum Jan 15, 2018, 11:55 AM

#

Doesn't it comes to reimplementing UActorComponent ?

lean river Jan 15, 2018, 11:56 AM

#

Yeah, glad to see that :D
I tracked back how epic does this..
Now i clearly see epic using his VM to process rpcs.

When you call rpc that passed to virtual machine, vm do a callback and call those two functions

#

Your overrided function will pass to owners netdriver, netpack the rpc data

#

On process side repeat and call vm , overriden functions then call rpc function

#

Of course this is short theory :D

#

So every uobjects implements rpc functionality through the vm.. and using owner netchannel

lost fulcrum Jan 15, 2018, 12:02 PM

#

oh, it checks relevancy every RPC

#

ok. its only for reliable multicasts

lost fulcrum Jan 15, 2018, 1:10 PM

#

Is Replicated property specifier only adds flag to the property or it also generates code ?

sterile pebble Jan 15, 2018, 1:26 PM

#

is there something different with SetOwner in 4.17? I dont understand why my actor is simulated proxy on client side, when client is the owner

lean river Jan 15, 2018, 1:26 PM

#

Well i think that generate code of course..
If you look at datareplication.cpp there is lot of code which collect uproperties

wide chasm Jan 15, 2018, 2:41 PM

#

How do you get the location of player 1 or player 2 seprately, in a multiplayer game? someone please help

quartz vector Jan 15, 2018, 3:21 PM

#

is there a way to intercept replication of a property

#

Server changes inventory... inventory structure replicates to client

#

How can client know when this happens

#

RepNotify?

mild hull Jan 15, 2018, 3:23 PM

#

repnotify?

lean river Jan 15, 2018, 3:23 PM

#

Repnotify!

quartz vector Jan 15, 2018, 3:24 PM

#

gee it's right there in the name lol

#

so if not running dedicated server

#

will that still work?

lean river Jan 15, 2018, 3:24 PM

#

Nop

#

:D

quartz vector Jan 15, 2018, 3:25 PM

#

so have to code a special case for it then

lean river Jan 15, 2018, 3:25 PM

#

I mean will works on connected clients

quartz vector Jan 15, 2018, 3:25 PM

#

since if Client is Authority it doesn't need to rep notify

#

it just handles itself i guess

#

Like a purely MP game that features an "Offline" mode for testing/exploration

lean river Jan 15, 2018, 3:25 PM

#

But listen server will not call repnotify

quartz vector Jan 15, 2018, 3:26 PM

#

with nothing saved

#

guess I can sort that out later...it's really a "simple" thing I am trying to do

#

Client runs its own TryAdd and calls Server_TryAdd

lean river Jan 15, 2018, 3:28 PM

#

So for example if you want update ui from repnotify or after repnotify you should check for standalone and listen server netmode after you changed inventory and call repnotifyy manually

inner iris Jan 15, 2018, 4:12 PM

#

@quartz vector yeah what Amph just said- calling the repnotify function manually only on the listen server after changing the repnotify property will mean it gets called everywhere.

quartz vector Jan 15, 2018, 4:22 PM

#

is it not possible to pass parameters through OnRep function?

lost fulcrum Jan 15, 2018, 4:23 PM

#

why ? At the time when OnRep called your property must be already updated

#

Otherwise its more like RPC

quartz vector Jan 15, 2018, 4:25 PM

#

i just need to pass a value

#

let me see if i can add some comments in code to explain better

#

            TransientHandledItem = NewObject<UTransientHandledItem>(this, UTransientHandledItem::StaticClass());
            TransientHandledItem->InitProperties(ItemInfo, CompartmentIndex, SubCompartmentIndex, SlotIndex);

            FTimerDelegate TimerDel;
            TimerDel.BindUFunction(this, FName("ClearTransientHandledItem"));
            GetWorld()->GetTimerManager().SetTimer(ClearTransientItemTimerHandle, TimerDel, 1.f, false);

            return true;
        }
    }
    return false;
}
void UInventoryControllerComponent::ClearTransientHandledItem(/*Called on timer*/)
{
    OnRep_ClearTransientHandledItem();
}
void UInventoryControllerComponent::OnRep_ClearTransientHandledItem(/*Need SlotType to Broadcast*/)
{
    if (GetOwner()->HasAuthority())
        GEngine->AddOnScreenDebugMessage(-1, 3.f, FColor::Green, "Called On Server: " + bHandlingItem ? "True" : "False");
    else
        GEngine->AddOnScreenDebugMessage(-1, 3.f, FColor::Green, "Called On Client" + bHandlingItem ? "True" : "False");

    if (bHandlingItem) {

        bHandlingItem = false;
        TransientHandledItem = nullptr;

        OnContentChangeDelegate.Broadcast(/*Needs to pass enum SlotType*/); //UI binds to this to update the container in correct "Slot"
    }
}```

#

bHandlingItem is ReplicatedUsing=OnRep_ClearTransientHandledItem ... i don't even know if i have this setup properly tbh

#

all I need to do is clear the UTransientHandledItem pointer on both client and server

#

and then broadcast to client what essentially is "Contents in this SlotType have been changed...redraw UI"

lost fulcrum Jan 15, 2018, 4:30 PM

#

oh

quartz vector Jan 15, 2018, 4:30 PM

#

The function where bHandlingItem is set to "true" and TransientHandledItem are spawned has signature with "SlotType" already

#

bool UInventoryControllerComponent::TryAddItemAt(AActor * Item, const EEquipmentType SlotType, const int32 CompartmentIndex, const int32 SubCompartmentIndex, const int32 SlotIndex)

#

so is it not possible to pass this value through my RepNotify?

lost fulcrum Jan 15, 2018, 4:33 PM

#

I think no, I guess you should either replicate that value through another variable or use RPC

#

seems like proper inventory system is some kind of global pain

quartz vector Jan 15, 2018, 4:33 PM

#

it's just a side thing im trying to add for quality purposes really

#

Server authenticated Inventory can feel unresponsive

lost fulcrum Jan 15, 2018, 4:34 PM

#

if your handled item is replicated then you can just replicate is variable

lean river Jan 15, 2018, 4:34 PM

#

@quartz vector you cant pass variable to onrep functions

quartz vector Jan 15, 2018, 4:34 PM

#

so I spawn a placeholder thing that is responsive to client that shows it's being done

lost fulcrum Jan 15, 2018, 4:34 PM

#

or also simply have dedicated slot for currently handled item

quartz vector Jan 15, 2018, 4:34 PM

#

UObjects can't replicate from UActorComponent iirc

lean river Jan 15, 2018, 4:34 PM

#

straightforward because uactorcomponent also using owners netchannel aka actor or pawn

quartz vector Jan 15, 2018, 4:34 PM

#

AActor can replicate subobjects

lean river Jan 15, 2018, 4:34 PM

#

😄

#

but uobject can be replicated from uactorcomponent

lost fulcrum Jan 15, 2018, 4:35 PM

#

but you can serialize stuff into FMemoryWriter and send through RPC as TArray<uint8>

#

then deserialize at clientside

quartz vector Jan 15, 2018, 4:35 PM

#

could I do this same thing by calling a Client RPC?

#

and just replicating bHandlingItem

lost fulcrum Jan 15, 2018, 4:35 PM

#

yes

quartz vector Jan 15, 2018, 4:36 PM

#

ok let me try that...don't think I need repnotify here

#

also...how do you get the ping of a client

lean river Jan 15, 2018, 4:37 PM

#

it is in playerstate

quartz vector Jan 15, 2018, 4:37 PM

#

basically my Inventory has like a .250s artificial delay and I would like to cut half of the players ping off of that

#

if someone is lagging more than that then they just receive the actual update slower and their inventory is not as responsive

lost fulcrum Jan 15, 2018, 4:38 PM

#

lol, inventory with lag compensation

quartz vector Jan 15, 2018, 4:38 PM

#

that's right

#

Next level inventory, bro

bitter oriole Jan 15, 2018, 4:39 PM

#

@quartz vector You should always show local data to the player directly, without waiting for the server's answer

lost fulcrum Jan 15, 2018, 4:39 PM

#

would even cooler if you move all items in past slots and check if player hit correct slot with cursor like real lag compensation is done in shooters

quartz vector Jan 15, 2018, 4:39 PM

#

loot is validated against an external database

#

loot is all owned by server

bitter oriole Jan 15, 2018, 4:40 PM

#

Sure

quartz vector Jan 15, 2018, 4:40 PM

#

i COULD let client move the item if it's legal on client

bitter oriole Jan 15, 2018, 4:40 PM

#

You should

#

That's networking 101

quartz vector Jan 15, 2018, 4:40 PM

#

but i would then need to do something when server updates it

bitter oriole Jan 15, 2018, 4:40 PM

#

Well yeah

lost fulcrum Jan 15, 2018, 4:40 PM

#

dam, I have correctly working inventory with all the stuff and I really like it

bitter oriole Jan 15, 2018, 4:40 PM

#

You need to do exactly that

lost fulcrum Jan 15, 2018, 4:40 PM

#

but it only works in editor

quartz vector Jan 15, 2018, 4:40 PM

#

that is probably what I will do in the end

bitter oriole Jan 15, 2018, 4:40 PM

#

No one ever wants to have lag in an inventory, that just screams poor quality

quartz vector Jan 15, 2018, 4:41 PM

#

but right now I'm trying to get the UI to update this properly

#

like if you take a magazine out of backpack to reload, there is a mechanical delay for items being taken out

#

because there are "bags" that are intended to be used for this

#

and reloading out of Backpack is slower....also want to reduce some of the "twitch" inventory because being in inventory is risky

lost fulcrum Jan 15, 2018, 4:42 PM

#

@bitter oriole rust has that mechanics where you either move items by mouse between two slots instantly or rightclick to move into inventory directly and it moves with small delay

quartz vector Jan 15, 2018, 4:42 PM

#

but rearranging a backpack just internal contents...i agree, that needs to be responsive

lean river Jan 15, 2018, 4:44 PM

#

@lost fulcrum lot of game have small delay with inventory operations, did you ever played with wow on us server from europe? 😄

quartz vector Jan 15, 2018, 4:44 PM

#

I still have to spawn a placeholder for client regardless, because as soon as Server destroys and swaps out items that it owns, it will replicate that to client which destroys the items

lean river Jan 15, 2018, 4:44 PM

#

sometimes 1 sec was the validation and the result

lost fulcrum Jan 15, 2018, 4:44 PM

#

lol, no

quartz vector Jan 15, 2018, 4:44 PM

#

many inventorys i have seen online are purely server authoritative so if your ping is low it's fine

#

but if you get a lag spike

#

things start having delays

mild hull Jan 15, 2018, 4:45 PM

#

why not redo the ui each time it changes and remove all transits?

quartz vector Jan 15, 2018, 4:45 PM

#

Mizuki, i remove from parent widgets

#

and regenerate them

bitter oriole Jan 15, 2018, 4:45 PM

#

Really, no one wants any local option to wait for a server response. That basically breaks immersion completely

#

It's really annoying and visible

quartz vector Jan 15, 2018, 4:46 PM

#

It also opens up people to hack

bitter oriole Jan 15, 2018, 4:46 PM

#

It absolutely doesn't

quartz vector Jan 15, 2018, 4:46 PM

#

oh wait ur right

lost fulcrum Jan 15, 2018, 4:46 PM

#

You may ignore ping actually, just predict server actions and everything will be okay

quartz vector Jan 15, 2018, 4:46 PM

#

Server is still spawning the items at the end of the day

#

and then replicating inventory

#

what client side does is purely visual

bitter oriole Jan 15, 2018, 4:47 PM

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The fix here is to do what everyone has done for decades : when you do a local action, do it locally, tell the server. The server validates it, and sends an update to every client

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If the server tells something different, reset the client to that

quartz vector Jan 15, 2018, 4:47 PM

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that's what im doing lol...it's just not setup that way yet

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I am coding a mechanical delay based on the item container so i can use it later

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it won't delay 99% of inventory movement

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I'm just trying to get that piece in right now before I add the Client side of Adding inventory items back in

lost fulcrum Jan 15, 2018, 4:50 PM

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for my implementation is kinda simple like

void InventoryInterface::SwapSlots(int SlotA, int SlotB)
{
    Inventory->SwapSlots(SlotA, SlotB);
    ServerSwapSlots(SlotA, SlotB);
}

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ServerSwapSlots is just an RPC that requests same SwapSlots from inventory at serverside

quartz vector Jan 15, 2018, 4:51 PM

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I wish my inventory items were simple enough to just use structs

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but you can have Backpacks inside Backpacks inside Backpacks etc...

lost fulcrum Jan 15, 2018, 4:51 PM

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that would be terrible to not have methods bound to items

lean river Jan 15, 2018, 4:51 PM

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lal my implementation also simple

E_InventoryReturnCode UInventorySystemComponent::TrySwapItems(int32 fromSlot, int32 fromQuantity, E_Inventory fromInventoryType, int32 toSlot, E_Inventory toInventoryType)
{
    FInventoryArrayData fromItem = SavedDraggedItem.ToInventoryData();
    FInventoryArrayData toItem = GetActiveInventoryAsCopy(toInventoryType)[toSlot];

    // Check Quantity
    if (fromItem.Quantity < fromQuantity)
    {
        UE_LOG(OGW, Warning, TEXT("ANTIHACK: Tried to moved more quantity as player have! PlayerName:%s "), *GetOwner()->GetName());
        return E_InventoryReturnCode::ER_HackMoreQuantity;
    }

    E_InventoryReturnCode stackAddreturn = TryAddStack(fromItem, toSlot, toInventoryType);

    if (stackAddreturn == E_InventoryReturnCode::ER_SuccesfullyStacked)
    {
        SavedDraggedItem.Invalidate();
        return E_InventoryReturnCode::ER_SuccesfullAdd;
    }

    return E_InventoryReturnCode::ER_None;
}

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oops

bitter oriole Jan 15, 2018, 4:52 PM

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@quartz vector We've had that discussion before, and you definitely can/should use simple structs for data, not actors, but well, there's no telling you that

quartz vector Jan 15, 2018, 4:52 PM

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you cannot use Structs for that until Unreal lets you have recursive structs

bitter oriole Jan 15, 2018, 4:52 PM

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There are many ways to go around that

quartz vector Jan 15, 2018, 4:53 PM

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you would need FStruct Item with uproperty TArray<Item>

bitter oriole Jan 15, 2018, 4:53 PM

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Also you can do that

quartz vector Jan 15, 2018, 4:53 PM

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how?

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you cannot do that

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USTRUCTS do not support recursion of UPROPERTY like that

lean river Jan 15, 2018, 4:53 PM

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ohm

bitter oriole Jan 15, 2018, 4:53 PM

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Maybe not, but you can definitely have a TArray of FStruct*, which is basically the same thing

lean river Jan 15, 2018, 4:53 PM

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but why you need recursion?

quartz vector Jan 15, 2018, 4:54 PM

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Amph because an Item can be an ItemContainer

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which can hold other Items

bitter oriole Jan 15, 2018, 4:54 PM

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We have something like 5 levels of data recursion ourselves

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100% UStruct

quartz vector Jan 15, 2018, 4:54 PM

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you can do nested structs

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not infinitely nested structs through recursion

lean river Jan 15, 2018, 4:54 PM

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yup

bitter oriole Jan 15, 2018, 4:54 PM

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Of course you can

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Just use pointers

quartz vector Jan 15, 2018, 4:54 PM

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pointers to what?

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UObjects don't replicate

halcyon abyss Jan 15, 2018, 4:54 PM

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Hello guys! 😃

lean river Jan 15, 2018, 4:54 PM

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what?

bitter oriole Jan 15, 2018, 4:54 PM

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sigh

lean river Jan 15, 2018, 4:54 PM

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uobjects not replicate?

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WHAAAT? 😄

quartz vector Jan 15, 2018, 4:55 PM

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nope

bitter oriole Jan 15, 2018, 4:55 PM

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Anyway, i'm out of that conversation

quartz vector Jan 15, 2018, 4:55 PM

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go create a UObject on server