#multiplayer | Unreal Source | Page 425

thin stratus Oct 24, 2018, 7:46 AM

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Na, you can attach VS to the process of your server

left marsh Oct 24, 2018, 7:57 AM

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ATM I am attempting a fresh package on a fresh project to see what happens

left marsh Oct 24, 2018, 8:35 AM

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Running my server executable from the packaged folder caused the same issue to occur.

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I will try with a fresh project. I am running out of space on this drive.

wary wyvern Oct 24, 2018, 8:52 AM

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Hey guys, why AddPlayerState(APlayerState* Player) in GameState gets called even when client disconnects?

solar flower Oct 24, 2018, 10:18 AM

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Should projectiles typically be spawned from a PC RPC?

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And replicate movement

drifting plank Oct 24, 2018, 11:01 AM

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When you spawn a replicated actor on the server, it will be automatically spawned on all clients

solar flower Oct 24, 2018, 11:15 AM

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thanks @drifting plank

slim holly Oct 24, 2018, 11:21 AM

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oof, custom movement replication takes a hella lot of work

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now I just need error correction for server side

twin juniper Oct 24, 2018, 11:52 AM

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@gleaming vector hey, I was speaking to you yesterday about ULocalPlayer::GetGameLoginOptions(). I was thinking, I could have a button on my UI for selecting a race, or hero, and then add an if statement to check that bool in GetGameLoginOptions(). However, when we pass this to the server and we call "GetGameLoginOptions" that bool wouldn't be set anymore. Is there a better way of doing this? Should we just simply return an FString variable, and set that variable when we set our race via a button?

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I think it would need to be stored like so: race=human

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I'm simply wondering how to convert the GetGameLoginOptions() into a usable method. When reading the source code comments, it states that it's a key=value pair concatenated with & between each key/value pair.

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Is there a method to convert this to a TMap?

cedar finch Oct 24, 2018, 5:15 PM

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Hey guys. I'm trying to learn how to use Player States. I keep finding explanations on what they are for but does anyone know where I can find someone using them? I'm wanting to use my Playerstate for spectating players and seeing there health.

gleaming vector Oct 24, 2018, 5:48 PM

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@twin juniper that's up to you bud, how you want to convert the string into something you can use on the server

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the obvious simple one is to have some enum

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for like, Human, Orc, Undead

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then just do a check if(option == "Human") Race = EPlayerRace::Human

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personally, when I used it, I had a DataAsset that had a PrimaryAssetId set, and used the AssetManager to load it

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but that's outside the scope of this channel

north ibex Oct 24, 2018, 6:13 PM

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I am having an issue with multiplayer animation that I've been unable to track down via google, answer hub, etc. I'd be ever grateful for some help here.

I have a multiplayer game that has multiple skeletal meshes that are used for clothing on characters. They use set master pose component to follow the main mesh animation. This works fine for the local player. Non-local players see the animation and clothing while the other character is not moving. If the other character moves, the clothing is rendered slightly out of position. It looks like the clothes are a frame behind because of the base mesh showing through. When the character stops moving, the clothes are perfectly lined up again. This causes a strange flickering effect when characters are moving.

Is there something that could be causing this? A boolean flag I missed somewhere? Or maybe I need to set up my component attachments in a different hierarchy?

I've come up with a few workarounds in case this is working as intended, but all of them require some refactoring, but I hope you guys might have a solution to just fix this. I know a full base mesh is not the preferred approach for modular characters, but it was working so well locally I thought I'd try it out and optimize later if needed.

Thanks for any hints.

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📎 unknown.png

swift topaz Oct 24, 2018, 6:20 PM

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During multiplayer, there comes a point where if you try spawning too many actors on a dedicated server, it eventually stops replicating them. This seems to happen when the number of actors you try to replicate exceeds 40,000 (rough estimate, not exact numbers).

Any idea what can cause replication to stop?

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These actors exist on the server just fine, they just don't replicate to clients completely.

vagrant falcon Oct 24, 2018, 6:41 PM

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hi, does uworks conflict with gamesparks ? cause both use own online subsystem

thin stratus Oct 24, 2018, 6:41 PM

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Shouldn't, as they aren't fully added as Subsystem iirc

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I'm using GameSparks with Steam and UWorks is not even using the Subsystem yet or?

vagrant falcon Oct 24, 2018, 6:42 PM

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i though uworks has own subsystem, but idk

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but if it works for you then i shouldnt have issues. thx

left marsh Oct 24, 2018, 8:02 PM

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@pale turtle How frustrating. Creating a brand new project and server causes the same issue.

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I even cooked content.

thin stratus Oct 24, 2018, 8:26 PM

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You are tagging the wrong person :D

left marsh Oct 24, 2018, 8:31 PM

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lol

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How should I proceed?

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I'm out of ideas.

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And I can't just exclude the asset in question because it's a class default. It's a question of how the engine handles missing assets

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Loading the editor or standalone game also says the asset is missing but doesn't hit the check when trying to hide it.

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Oh! I think I got it.

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I had to move it to a different location

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There were two versions of the base game .exe in two places.

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Seems to be working now. Awesome.

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Is there a tutorial for how to operate a dedicated server? Stuff like sending commands?

twin juniper Oct 24, 2018, 9:17 PM

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@gleaming vector i was primarily just trying to figure out how we access GetGameLoginOptions on the server side

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do we just call it?

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or do we get it from GetWorld()->GetAddressURL()

gleaming vector Oct 24, 2018, 9:17 PM

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no

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it'll be in the gamemode

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any of the fuctions that come with an options string

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like PreLogin

twin juniper Oct 24, 2018, 9:17 PM

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Do you know the specific method?

gleaming vector Oct 24, 2018, 9:18 PM

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there are a few

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PreLogin, Login

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InitNewPlayer

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take a look at GameModeBase.h

twin juniper Oct 24, 2018, 9:18 PM

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ohh

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const FString & Options,

gleaming vector Oct 24, 2018, 9:18 PM

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yep

twin juniper Oct 24, 2018, 9:18 PM

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Okay, I see.

gleaming vector Oct 24, 2018, 9:18 PM

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that is where it will be

twin juniper Oct 24, 2018, 9:19 PM

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So it's simply passed upon login

gleaming vector Oct 24, 2018, 9:19 PM

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there is a UGameplayStatics function to parse out options in that string

twin juniper Oct 24, 2018, 9:19 PM

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Okay, that makes sense.

gleaming vector Oct 24, 2018, 9:19 PM

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mmhmm

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GameState also has a few functions

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or maybe it was GameSession

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yeah, GameSession, my bad

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it also has a few functions that take the options string

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InitNewPlayer might be the one you want

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since it's after the PlayerController is constructed

twin juniper Oct 24, 2018, 9:20 PM

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`Customize incoming player based on URL options

`

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The comment on InitNewPlayer, it sounds perfect.

gleaming vector Oct 24, 2018, 9:20 PM

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yep

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that's what you want to do

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player joins with a specific race, so you set it there

twin juniper Oct 24, 2018, 9:21 PM

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Yeah

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That is exactly what I needed. Thank you Roy.

gleaming vector Oct 24, 2018, 9:22 PM

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👍🏽

twin juniper Oct 24, 2018, 9:29 PM

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@gleaming vector https://i.imgur.com/uDF8407.png

Imgur

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Looks like you were correct by the way about UGameplayStatics

gleaming vector Oct 24, 2018, 9:29 PM

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yeah there are a few functions there for parsing options

thin stratus Oct 24, 2018, 9:30 PM

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If only they would expose ClientTravel to BPs...

twin juniper Oct 24, 2018, 9:31 PM

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Cedric, you can call Exec Console Command blueprint node though, and type "open IP"

thin stratus Oct 24, 2018, 9:31 PM

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Does that allow passing options for the client?

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Problem is that "JoinSession" is required if you use Sessions

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And that calls ClientTravel directly, so no way to jump inbetween and pass stuff to the server :/

twin juniper Oct 24, 2018, 9:33 PM

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Oh, I'm not sure. I do know that if you are using steam, they have a parameter you can put to pass a string over as binary data. I'm not sure if that helps though. I don't think the "open" console command can do what you are looking for. It might be best to just create a blueprintcallable ufunction.

thin stratus Oct 24, 2018, 9:35 PM

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I'm not "looking" for anything. I was only stating a "fact" or rather "wish"

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The Options that you get in Login and PreLogin have to be passed

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Afaik that's done via "ClientTravel"

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Nodes like "JoinSession" do ClientTravel internally, so I would just wish for Epic to split that and give access to the ClientTravel function, so you can pass options from client to server on login in blueprints

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With that, the wish for Login and PreLogin to be exposed ;-;

gleaming vector Oct 24, 2018, 9:37 PM

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they are also passed from ULocalPlayer

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virtual FString GetGameLoginOptions() const { return TEXT(""); }

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they are appended right before the game connects to a server

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in PendingNetGame.cpp

thin stratus Oct 24, 2018, 9:39 PM

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Yeah only that ULocalPlayer as a class doesn't even exist in BPs. So sad.

gleaming vector Oct 24, 2018, 9:39 PM

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yeah

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🤷🏽

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imo, if you aren't doing multiplayer stuff in C++ you are making a huge mistake

thin stratus Oct 24, 2018, 9:40 PM

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Yeah, you run into a wall pretty fast

gleaming vector Oct 24, 2018, 9:40 PM

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mmhmmm

slim holly Oct 24, 2018, 9:41 PM

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I wish there was a non-babyproofed version of BP

fossil spoke Oct 24, 2018, 9:41 PM

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Yeah its called C++

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😃

gleaming vector Oct 24, 2018, 9:42 PM

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lmao

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agreedo

slim holly Oct 24, 2018, 9:42 PM

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yea well that doesn't help much

gleaming vector Oct 24, 2018, 9:43 PM

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i mean like, you can only do so much

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advanced networking involves a lot of non-UObject objects, plain data types, pointers to data, and serialization functions

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none of those can be exposed to blueprint due to the Blueprint VM's constraints

slim holly Oct 24, 2018, 9:45 PM

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well that's understandable limitation

gleaming vector Oct 24, 2018, 9:45 PM

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blueprint is an excellent tool, but just like a really good screwdriver it's completely useless when you need to hammer some nails

thin stratus Oct 24, 2018, 9:46 PM

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Currently I feel like there are these 3 forms

Blueprints: Limit Babyproof
Exposing all functions that have supported types: Wishful
C++

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There are a lot of function and classes that wouldn't hurt to be exposed

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They are also not hard to expose as they only have parameters

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If Epic would do that, it would of course still not be enough if you need non-uobject etc stuff

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but you would atleast have a more complete BP system

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Things like "bWantsPlayerState" in the AIController etc.

gleaming vector Oct 24, 2018, 9:47 PM

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sure

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but like, the LocalPlayer stuff should probably stay in C++ because of how the engine handles players

fossil spoke Oct 24, 2018, 9:48 PM

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Exposing to much "lower level" stuff to Blueprint is the wrong way to go. People should move towards C++ if they want more complex features.

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IMO

gleaming vector Oct 24, 2018, 9:48 PM

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yeah

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but this is getting off topic

fossil spoke Oct 24, 2018, 9:48 PM

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I agree though that there is stuff that should be exposed but isnt

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😃

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Yeah

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lol

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Infractions for all of us. Sorry guys

gleaming vector Oct 24, 2018, 9:49 PM

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damn you stole my joke

fossil spoke Oct 24, 2018, 9:49 PM

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Haha

winged badger Oct 24, 2018, 9:49 PM

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problem is that c++ networking code relies on a ton of structs

gleaming vector Oct 24, 2018, 9:49 PM

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just like you stole my ban the other week

fossil spoke Oct 24, 2018, 9:49 PM

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Still on about that one aye

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lol

gleaming vector Oct 24, 2018, 9:49 PM

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well nick did it a few days later sooo

winged badger Oct 24, 2018, 9:49 PM

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and i'd be happier hammering nails with a screwdriver then working with structs in BP

fossil spoke Oct 24, 2018, 9:49 PM

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Your getting slow old man 😛

gleaming vector Oct 24, 2018, 9:49 PM

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yeah, i mentioned that before, networking has a lot of POD types

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i was on my tablet yo

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travelling

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and im not even 30 yet #getoffmylawn

fossil spoke Oct 24, 2018, 9:50 PM

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Heh

gleaming vector Oct 24, 2018, 9:50 PM

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POD = plain old data

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basically, structs

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although a class also counts in some cases

solar flower Oct 24, 2018, 9:50 PM

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Got something to look at

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📎 unknown.png

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bottom is BP_Tile, only exists locally

winged badger Oct 24, 2018, 9:52 PM

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you can't send RPCs in a non replicated Actor

solar flower Oct 24, 2018, 9:53 PM

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WorldGen is replicated

winged badger Oct 24, 2018, 9:53 PM

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hmm, you didn't

solar flower Oct 24, 2018, 9:53 PM

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Or are you saying I can't call them from Tile?

winged badger Oct 24, 2018, 9:53 PM

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no, thats fine

solar flower Oct 24, 2018, 9:54 PM

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Any suggestions for improvements on this?

winged badger Oct 24, 2018, 9:54 PM

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FFastArraySerializer for the tile array?

solar flower Oct 24, 2018, 9:54 PM

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I have @fossil spoke to thank for the better WorldGen foundation

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I'm not replicating the tiles anymore

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I only send the seed

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Went from 70 seconds to 2.5

fossil spoke Oct 24, 2018, 9:55 PM

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Sorry?

winged badger Oct 24, 2018, 9:55 PM

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fair enough

solar flower Oct 24, 2018, 9:55 PM

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whoops

fossil spoke Oct 24, 2018, 9:55 PM

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Oh

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You got it working then?

solar flower Oct 24, 2018, 9:56 PM

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Yea, feels way cleaner for sure

fossil spoke Oct 24, 2018, 9:56 PM

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More efficient to by the sounds of it?

solar flower Oct 24, 2018, 9:56 PM

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can load 65,000 tiles on every client in like 6 seconds

fossil spoke Oct 24, 2018, 9:56 PM

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👍

winged badger Oct 24, 2018, 9:56 PM

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any upgrades i can think of atm would be purely cosmetic

solar flower Oct 24, 2018, 9:56 PM

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like reroute nodes?

winged badger Oct 24, 2018, 9:57 PM

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like putting SpawnBuilding, SetBuilding and SetHasBuilding inside a function

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since they are atomic

solar flower Oct 24, 2018, 9:57 PM

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Ah yea, good point

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Man if that's the only critique I feel like I have some sort of grasp on multiplayer

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thanks guys

gleaming vector Oct 24, 2018, 10:09 PM

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the fun part is going from "how do i replicate one thing" to "how do i replicate thousands of things"

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and by fun i mean you want to bash your skull in

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😛

solar flower Oct 24, 2018, 10:14 PM

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I kinda went from the latter to the former in this case

fossil spoke Oct 24, 2018, 10:14 PM

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The solution is to ask nicely

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Yeah you were trying to replicate many things to only replicating 1 thing lol

solar flower Oct 24, 2018, 10:15 PM

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very literally

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65,536 AActors

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to one float

fossil spoke Oct 24, 2018, 10:15 PM

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Good design is extremely important man.

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Like i said to you before, just because something looks easy doesnt mean its right.

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Or efficient

solar flower Oct 24, 2018, 10:16 PM

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yea, you're totally right

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In this case i finished most of the game in single player, so decided to throw in multiplayer

left marsh Oct 24, 2018, 10:17 PM

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Out of curiosity, after you spawn the tiles from the seed, how do you ensure they stay in sync across clients?

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Do you just send deltas?

solar flower Oct 24, 2018, 10:17 PM

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They don't move, for their properties i handle them by the index (like i sent in my screenshot)

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since they array positions will be the same

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Everything but the Seed is local to clients

winged badger Oct 24, 2018, 10:18 PM

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should make that Multicast reliable tho

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you do not want to lose that packet

solar flower Oct 24, 2018, 10:19 PM

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Good point!

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not sure what all needs to be reliable yet so i've been keeping it all udp

winged badger Oct 24, 2018, 10:19 PM

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this is i take something that happens at most once every 10 seconds with multiple players

solar flower Oct 24, 2018, 10:20 PM

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yea, if not less

fossil spoke Oct 24, 2018, 10:20 PM

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Cosmetics should be unreliable. Like playing a sound or particle effect. Otherwise generally keep it Reliable.

winged badger Oct 24, 2018, 10:20 PM

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so Reliable is perfectly fine performance wise, and its is kinda gameplay critical in this example

fossil spoke Oct 24, 2018, 10:20 PM

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A Seed for terrain gen is defs critical so that should be reliable

solar flower Oct 24, 2018, 10:20 PM

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That's a replicated variable with a repnotify

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thought all variable replication was tcp

fossil spoke Oct 24, 2018, 10:21 PM

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Oh i couldnt remember how you were sending it

solar flower Oct 24, 2018, 10:21 PM

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It is though, right?

fossil spoke Oct 24, 2018, 10:21 PM

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Yes

gleaming vector Oct 24, 2018, 10:21 PM

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unreal is udp

left marsh Oct 24, 2018, 10:21 PM

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Good idea.

gleaming vector Oct 24, 2018, 10:21 PM

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but they have some stuff to simulate tcp

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doing acks and stuff for really reliable stuff

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because it's still faster to do it that way

left marsh Oct 24, 2018, 10:22 PM

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Is there a built-in system for replicating objects but not doing so every frame?

winged badger Oct 24, 2018, 10:22 PM

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you don't do it every frame by default

left marsh Oct 24, 2018, 10:22 PM

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Like one of them per frame in a queue?

gleaming vector Oct 24, 2018, 10:22 PM

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it depends on what you mean by that

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because "replicating" is many systems working together

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and not all of them happen every frame

winged badger Oct 24, 2018, 10:22 PM

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NetUpdateFrequency is basically how often it updates in Hertz

gleaming vector Oct 24, 2018, 10:22 PM

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^^

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for example, checking to see if a value has changed? that happens every frame

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packing it into a packet and sending it? that can be batched

solar flower Oct 24, 2018, 10:23 PM

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Seems Epic changed priorities and Replication defaults for a lot of classes

gleaming vector Oct 24, 2018, 10:23 PM

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checking to see if an object is relevant to a connection? a lot of code to determine when to do stuff like that

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all of that is "replication"

solar flower Oct 24, 2018, 10:24 PM

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When i read about priorities it seemed like something that would be 1 unless the user changed it

left marsh Oct 24, 2018, 10:26 PM

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Gotcha

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I have a lot to learn about multiplayer.

winged badger Oct 24, 2018, 10:27 PM

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@left marsh in my experience, best insights are gained by reading heavily commented source headers

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like for example, NetSerialization.h

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(aside from actually reading the source code itself, ofc)

twin juniper Oct 24, 2018, 10:37 PM

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@gleaming vector Thanks for the PendingNetGame file info

gleaming vector Oct 24, 2018, 10:37 PM

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no problem

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that stuff is not really modifyable unless you want to modify the engine

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but it's good to know how a client and server communicate

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the server side counterpart is in UWorld

left marsh Oct 24, 2018, 10:38 PM

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I wish there was a way to record all the QnA done in these channels

gleaming vector Oct 24, 2018, 10:38 PM

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void UWorld::NotifyControlMessage(UNetConnection* Connection, uint8 MessageType, class FInBunch& Bunch)

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is where the server side is

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fun fact, one of these days I want to experiment with Destiny-style Join In Progress

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and there is some code in that function that I know that if I change I could probably do it

fossil spoke Oct 24, 2018, 10:43 PM

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Whats Destiny Style Join In Progress?

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<<< Doesnt play Destiny

gleaming vector Oct 24, 2018, 10:47 PM

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basically, the map is a series of zones

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no loading screen between them

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when you enter a zone, you are placed into a game instance

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and there are other people doing things in that instance

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and you can just leave the zone, go into a new one, and get a new instance

solar flower Oct 24, 2018, 10:49 PM

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Like The Division

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I'm a big fan of Journey style

fossil spoke Oct 24, 2018, 10:49 PM

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Sounds interesting

solar flower Oct 24, 2018, 10:49 PM

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Journey does matchmaking based on location in the world and proximity

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You just run away from the other player to kick, then get placed right back in matchmaking

amber yew Oct 24, 2018, 10:58 PM

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Gentlemen, how to serve RESTful requests to RESTful server from UE4 blueprint?

timid pendant Oct 24, 2018, 11:16 PM

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@amber yew You can use the free varest plugin for blueprints

amber yew Oct 24, 2018, 11:16 PM

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varest works great for me , I just wonder if there is any other way.. maybe Epic have already implemented sending jsons

polar sun Oct 24, 2018, 11:42 PM

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I have a blueprint that teleports, halts the player for a frame, and then rotates the player facing the right direction. I have the first two parts working in multiplayer, but I can't get the third to happen:

📎 unknown.png

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The player just doesn't rotate. I'm assuming because the cast from Actor to Player Controller does not work.

fossil spoke Oct 24, 2018, 11:46 PM

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📎 Capture.JPG

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Your passing nothing into the Actor Param for that function

polar sun Oct 24, 2018, 11:46 PM

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Oooh.

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It still doesn't work, though. I did some moving around to make it readable to post a picture and forgot to reconnect.

fossil spoke Oct 24, 2018, 11:47 PM

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Are you passing it a PlayerController?

polar sun Oct 24, 2018, 11:48 PM

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I'm passing it an actor, from the OnActorBeginOverlap TriggerBox

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That actor will be the player controller

fossil spoke Oct 24, 2018, 11:48 PM

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Well i doubt the overlapped Actor will be a PlayerController, PlayerControllers are not "interactable"

polar sun Oct 24, 2018, 11:50 PM

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Oh. I guess that makes sense. The FirstPersonCharacter is the actor.

fossil spoke Oct 24, 2018, 11:50 PM

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Well if its a Character, cast OtherActor to Character, then do an GetController node to pass to RotatePlayer

polar sun Oct 24, 2018, 11:53 PM

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Damn. Thank you my good sir. Works like a charm.

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I have a Blueprint Runtime Error now.

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When player 1 teleports: Accessed None trying to read property CallFunc_GetController_ReturnValue

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📎 unknown.png

north ibex Oct 25, 2018, 12:22 AM

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Thanks guys. It works. For anyone that runs into a similar issue. The problem was the hierarchy.

📎 unknown.png

polar sun Oct 25, 2018, 12:50 AM

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I'm able to rotate my my character after converting it from an actor to a pawn and getting its controller, but it gives me an error in the output log:

PIE: Error: Blueprint Runtime Error: Accessed None trying to read property CallFunc_GetController_ReturnValue from function: 'ExecuteUbergraph_FirstPersonExampleMap' from node: Set Control Rotation in graph: EventGraph in object: FirstPersonExampleMap with description: Accessed None trying to read property CallFunc_GetController_ReturnValue

Is there a better way I can do this?

📎 unknown.png

worthy wasp Oct 25, 2018, 1:55 AM

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Not sure what i'm doing wrong - i can no longer get Steam Overlay/Integration to work on my newly formatted PC - worked fine before on Windows7, Win10 reimage ... and it doesnt work. My source engine build was on a seperate DATA drive - so it wasnt affected by the windows versioning..... What am I doing wrong? This same project works fine on other team members machines - so the .ini and project settings are setup correctly... this has to be a local setting on my PC somewhere?

https://answers.unrealengine.com/questions/840468/unable-to-use-steam-in-projects.html

versed socket Oct 25, 2018, 3:14 AM

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@left marsh You can use the search bar in the top right of the Discord window to search explicitly in this channel for what you need

neon mango Oct 25, 2018, 4:28 AM

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So digging into some changes with Multiplayer in 4.20, the shooter game uses DefaultPlatformService=Null but that seems to disable Steam and if you set it = to steam you can't LAN?

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In the shooter game 4.20 trying to connect via direct IP 127.0.0.1 causes a Fatal Error

charred crane Oct 25, 2018, 5:58 AM

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Probably a dumb question but I need to ask it - would the number of replicated variables inside of an object increase latency when spawning that object for a client?

thin stratus Oct 25, 2018, 6:27 AM

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I would say you should simply check your Network Profiler

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When you spawn an Actor, it has defaul values applied.
So I doubt any further replication happens at that point

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However the next frame it could (depending on what you do) already send massive amount of data due to all the variables that might change

winged badger Oct 25, 2018, 6:32 AM

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@polar sun Overlaps happen on both client and server, so when the execution is client side that code runs for the other clients and for the listen server host as well

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and you do not have their PlayerController locally, only your own as a client

thin stratus Oct 25, 2018, 7:40 AM

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I'm confused. I got a small function in C++ on a Component that gets the PlayerArray from the GameState it sits on.
But even 10 seconds after BeginPlay (and me controlling a pawn), the PlayerArray is empty :/

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That must be something obvious >.>

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I have the slight feeling that this is not the GameState that the game actually uses o.o

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Yeah well that goes on the list of things I don't get.
I'm retrieving the owner of that component in PostInitProperties.
Breakpoint shows it being the right class.
2 Seconds later, in that function, I use the same variable and suddenly it's a different class in there (some distant bp parent).

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Now I moved the same code from PostInit into the function itself and the GameState is correct

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(the pointer is UPROPERTY, so no GC)

slim holly Oct 25, 2018, 8:25 AM

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I've had weird episodes with checking ownership too

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but I had a design question: for RPG game, would it be more feasible to replicate cursor, and trigger events on server based on that input. or do custom cursor data transfer for each specific event

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and by cursor, I mean mouse hit results

slim holly Oct 25, 2018, 9:18 AM

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oh this is a new one

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OnRep print says only False states of replicated boolean come from client

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that's pretty thick considering it's flagged reliable

winged badger Oct 25, 2018, 9:25 AM

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@thin stratus i don't think PostInitProperties is soon enough for BPs to get initialized

#

PostRegisterAllComponents would probably be better

#

and if the Owner is wrong, the World might be as well

thin stratus Oct 25, 2018, 9:29 AM

#

Thing is PostInit has the right owner

#

It shows the correct GameState Class etc.
But afterwards it's wrong

#

If I access it later

#

And I'm only setting it at that point

#

I swapped it with a simple BeginPlay now

slim holly Oct 25, 2018, 10:04 AM

#

(╯°□°）╯︵ ┻━┻

#

pawn spawn weapon on beginplay, saves ref. Animbp checks is the ref valid and plays animations for it

#

according to server, client ref is not valid, and client says server ref is not valid

#

even tho the weapon shows on the screen

wary wyvern Oct 25, 2018, 12:24 PM

#

Guys, when I connect to a server, and then quit and reconnect, there are two PlayerStates gets created and added. Why this might happen?

#

I mean two states create on my reconnect.

thin stratus Oct 25, 2018, 12:28 PM

#

@wary wyvern Might be the inactive one

#

That gets created when you leave

#

It's for getting data back if you had a dc and reconnected fast enough

wary wyvern Oct 25, 2018, 12:30 PM

#

@thin stratus How do I make it spawn just one player? Because now AGameState::AddPlayerState() calls twice per player join.

thin stratus Oct 25, 2018, 12:30 PM

#

Well you can deactivate the inactive stuff if you don't need it

#

There should be a lifetime setting for them in the gamemode

wary wyvern Oct 25, 2018, 12:31 PM

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Yep, I've set it, but what if player crashes and gets in game in 10-15 seconds? Or quits and wanted to return back

#

By the way, it looks like it creates new state, but not using last one

thin stratus Oct 25, 2018, 12:33 PM

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I'm pretty sure it creates a new state and the last one is just there for you to use "OnOverrideWith"

#

You need to manually get the data back

wary wyvern Oct 25, 2018, 12:33 PM

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// Connect
Player connected DinoTeamTokenPlayerState_10
Player connected DinoTeamTokenPlayerState_11
//Dissconnect
//Connect
Player connected DinoTeamTokenPlayerState_12
Player connected DinoTeamTokenPlayerState_13

thin stratus Oct 25, 2018, 12:34 PM

#

Hm not sure

wary wyvern Oct 25, 2018, 12:34 PM

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I do not need to get data back, I just want unreal not to add this player state again in player list twice

#

Both of them have controller, by the way

thin stratus Oct 25, 2018, 12:36 PM

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That sounds weird

#

The second one should def not have an owner

next warren Oct 25, 2018, 1:04 PM

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📎 Screenshot_41.png

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📎 Screenshot_40.png

slim holly Oct 25, 2018, 1:04 PM

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why do I feel like that's a toggleable option 🤔

next warren Oct 25, 2018, 1:04 PM

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📎 Screenshot_42.png

slim holly Oct 25, 2018, 1:04 PM

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playerstate creation that is

next warren Oct 25, 2018, 1:05 PM

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Which method is correct screenshot 41 or 42 to call an event which is in player pawn screenshot 40 (pick up an item to store in inventory)

#

Thanks in advance

slim holly Oct 25, 2018, 1:13 PM

#

Multicast call rate is capped by NetUpdateFrequency?

karmic briar Oct 25, 2018, 1:37 PM

#

Hey

#

Can anyone help me make my game multiplayer with spatialos

thin stratus Oct 25, 2018, 1:58 PM

#

SpatialOS can probably help you there :D

twin juniper Oct 25, 2018, 2:59 PM

#

@gleaming vector https://i.imgur.com/o8nlUqX.png

Imgur

#

Hey when I print out "Race" using GLog->Log() it prints out an empty string.

#

Also, is there a way to find out what is going on here? [2018.10.25-14.50.36:191][362]LogNet: Warning: Actor: 譈⑜䠰쒃张쳃쳌쳌䃌噓荈磬譈䣚蕈痒䠑䦋䠈Ƌ荈磄孞ｈ⁠譈䰁蒍ꀤ is bOnlyRelevantToOwner but does not have an owning Netconnection. It will not be replicated

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I don't know what the Chinese means.

winged badger Oct 25, 2018, 3:24 PM

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doesn't matter what it means

#

it means it has bOnlyRelevantToOwner set to true, but it is not in PlayerController's ownership tree

#

so it has no NetOwner

#

and thus, it can't replicate

twin juniper Oct 25, 2018, 3:57 PM

#

@winged badger Yeah, but how do we find out which actor it is, so that we can turn it off?

winged badger Oct 25, 2018, 5:14 PM

#

Getallactorsofclass, check for onlyrelevanttoowner

#

And print then check manually

#

Or learn chinese

thin stratus Oct 25, 2018, 5:15 PM

#

kappa Might both take the same time.

swift topaz Oct 25, 2018, 6:19 PM

#

Any clue where there would be a hard cap for replicated actors?

Running a dedicated server with over 10,300 actors and clients will only receive replicated actors up to 10,309 nothing more.

Deleting actors to get it below 10,309 will allow for new actors to replicate.

solar lynx Oct 25, 2018, 6:23 PM

#

hi

modern dome Oct 25, 2018, 6:36 PM

#

I want my Character to not be able to attack until the cooldown is vanished. Is a RepNotify (boolean) sufficient here?
I would simply start a Timer on the Server that sets the boolean to true...

thin stratus Oct 25, 2018, 6:58 PM

#

There are multiple ways

#

You could set a Boolean to true/false and use a Timer. Doing that on both ends would remove the lag the client feels.

#

Or you could simply get the game seconds and save them as "LastTimeAttacked"

#

And if "GetGameSeconds - LastTimeAttacked" is >= to "TimeBetweenAttacks" you can attack again

#

No real need for a RepNotify

#

@modern dome

slim holly Oct 25, 2018, 7:05 PM

#

I think WoW started using queued casts for that reason

#

ie. lets you queue up spell a certain time before client cooldown is finished

modern dome Oct 25, 2018, 7:05 PM

#

I am not really sure how to start with the whole thing anyway.

#

Yeah, But I'm not working on a game alá WoW. It's less complex.

slim holly Oct 25, 2018, 7:06 PM

#

it's not complex system, it just accepts the skill activation but delays it until cooldown is finished on server side

modern dome Oct 25, 2018, 7:06 PM

#

If a player (or enemy) attacks and hits, he gets a cooldown and cannot attack any further until the cooldown is "done"

thin stratus Oct 25, 2018, 7:07 PM

#

Well I just told you how to do it :X

modern dome Oct 25, 2018, 7:08 PM

#

Yes :D (And thanks btw :D)

#

but isn't GameSeconds different on client and server?

slim holly Oct 25, 2018, 7:10 PM

#

yes, but you're looking at timespan in this case

#

which is a difference, not a total value

modern dome Oct 25, 2018, 7:11 PM

#

so Client and Server do this calculation separately?

#

and if server says "Ok" I can attack?

thin stratus Oct 25, 2018, 7:12 PM

#

Yeah, I mean, if you really want it lagfree you need to perform everything properly on the client first anyway

#

Well, the Client will be able to send the command to the Server earlier

#

That's what the queuing is for

#

It basically means "The client's cooldown is done, the actual one isn't, let's queue this attack and execute it once the cooldown is through"

#

If you don't do that, then you only need to track time on the server and maybe replicate that time somehow

slim holly Oct 25, 2018, 7:15 PM

#

that doesn't sound like a good idea tho

#

playing with fixed time over network

thin stratus Oct 25, 2018, 7:15 PM

#

Yeah well, not saying it is a good idea

#

Just saying that if he doesn't want the queueing, then he would need to keep the timing on the server.

#

That will in result make the client only be able to execute an attack if the server's countdown is done.
WIth a high/er ping it would mean you can spam your attack key as much as you want, if the server's cooldown isn't done, you have to wait

#

The queueing is also not that easy though, cause you need to have a threshold in form of the average ping. You can't just queue every key press.

slim holly Oct 25, 2018, 7:18 PM

#

I'd say fixed 200ms queue is reasonable, it's not like you should try to make it work on every potato connection

modern dome Oct 25, 2018, 7:23 PM

#

Thanks guys. I hope I can find a fitting solution with the given information :D

polar sun Oct 25, 2018, 8:17 PM

#

Thank you for the response Zlo! The below text block is in regards to this screenshot: https://cdn.discordapp.com/attachments/221799385611239424/504818989780828170/unknown.png

[2:32 AM] Zlo: and you do not have their PlayerController locally, only your own as a client```

Is there a way to fix this error?  Since it works, do I need to worry about it?  I would feel better if there were no errors.  I tried different replications but I think not replicating is the way to do this.  I also looked into other ways to Rotate a player but it looks like the only way to do that is to Set Control Rotation.

thin stratus Oct 25, 2018, 8:32 PM

#

You need to worry about every AccessedNone error

#

They crash package games

#

Which kinda counts for all errors

#

It's pretty simple, the PlayerControllger (Your GetController would retrieve one) is only aviable on the Server and the owning client.
That means the Server always has valid reference while each client can only get their own

#

If you try to getController on Pawn2 while being the Client1, you would get nothing/null

#

Which causes your issue

#

You can either use an "IsValid" node

#

That would make sure it's not accessing it if it's not valid

#

Or you properly filter out the non-local clients

#

@polar sun

swift topaz Oct 25, 2018, 8:35 PM

#

When you set a "NetCullDistanceSquared" for an actor, what does it calculate it off of? PlayerController? Pawn?

polar sun Oct 25, 2018, 8:35 PM

#

Okay. I'm gonna look up isvalid

#

Thank you Mr Cedric.

thin stratus Oct 25, 2018, 8:35 PM

#

The other way is to filter properly and understand what's happening

#

The Actor you are overlapping with exists on all Players

#

So one instance per player

#

That isn't directly related to replication. A non replicated actor might do the same

#

Since it exists on everyone, everyone will cause the overlap

#

So your BeginOverlap calls on teh Server, the owning client and all other clients

#

You have to filter the Server and owning client

polar sun Oct 25, 2018, 8:36 PM

#

So filtering non-localclients is the better option?

thin stratus Oct 25, 2018, 8:36 PM

#

At least for that specific GetController part

#

It works both, it would just be good for you to understand the general concept

#

Cause there are parts where you might not be able to solve it with an is valid in teh future

#

For Server or Client you can always use "SwitchHasAuthority"

#

Server will call the Authority pin, all clients will call the Remote pin

#

So you would need to filter the owning client from the REmote pin

#

If you have access to the Pawn, you could try to get the Controller and do "IsValid" as we just discussed

#

There are also functions like "IsLocallyControlled" for the pawn

#

Or "IsLocalPlayerController" for the PlayerController. That for example would returns false on the Server if it's not his own PC

polar sun Oct 25, 2018, 8:41 PM

#

Thank you Cedric. I believe I came to a conclusion:

📎 unknown.png

#

No errors in the log.

thin stratus Oct 25, 2018, 8:44 PM

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Yus, that would work!

#

That might filter the Server side of the Player though

#

So make sure it still works properly on all players

polar sun Oct 25, 2018, 8:52 PM

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It does in dev, I'll have to build it later and see if that will work. I'm gonna wait for my brother to get home so we can use his computer. You're off duty 😉

swift topaz Oct 25, 2018, 9:04 PM

#

Turns out the correct answer to my question is neither, netculldistancesquared requires a character as it uses the movement component to calculate.

neon mango Oct 25, 2018, 9:11 PM

#

ragdoll replication woes https://gyazo.com/0576288f4e943580d0eaca80aaabbce4

Gyazo

▶ Play video

slim holly Oct 25, 2018, 9:13 PM

#

because you just don't replicate ragdolls

#

single pose is over 1kb of data

neon mango Oct 25, 2018, 9:16 PM

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I never take no as answer

gleaming vector Oct 25, 2018, 9:16 PM

#

i do not recommend replicating the pose

neon mango Oct 25, 2018, 9:16 PM

#

I just need general position, I don't need every limb to be accurate

gleaming vector Oct 25, 2018, 9:16 PM

#

keep track of the location and then put the ragdoll into that spot

#

and rather than pin the ragdoll to the spot

#

just kinda... move them there and let them lie

#

but for real, if the position matters, don't ragdoll

neon mango Oct 25, 2018, 9:18 PM

#

well noted

gleaming vector Oct 25, 2018, 9:18 PM

#

there is a physics based animation controller (that I don't know how to use) that could work well to achieve a "ragdoll" without actually ragdolling

#

it might be best to just play an animation, then let physics take over certain elements

neon mango Oct 25, 2018, 9:20 PM

#

Would it not be enough to just replicate one bones position?

#

so if that bone moves the entire body moves?

#

Source engine had no issue with rag doll replication, I wonder how they pulled it off :/ Every body part seemed to be replicated.

knotty kelp Oct 25, 2018, 9:26 PM

#

Speaking of player controllers, I need some help. I need a way for the client, in split screen multiplayer, to be able to see the player controller ID

sharp pagoda Oct 25, 2018, 10:17 PM

#

@knotty kelp Is this what you're looking for? https://api.unrealengine.com/INT/BlueprintAPI/Game/GetPlayerControllerID/index.html

Get Player Controller ID

worthy wasp Oct 25, 2018, 10:17 PM

#

I'm having issues getting steam to work on my PC for UE4 integration. Same project works fine for others on my team on their PC's.... What am I doing wrong?

https://answers.unrealengine.com/questions/840468/unable-to-use-steam-in-projects.html

#

freshly imaged Windows10 PC - 8.1 & 10 SDKs installed

winged badger Oct 25, 2018, 10:18 PM

#

still no luck with that? tried steam support?

worthy wasp Oct 25, 2018, 10:18 PM

#

i thought this to be a UE4 thing

winged badger Oct 25, 2018, 10:18 PM

#

its basically their API that is failing

worthy wasp Oct 25, 2018, 10:18 PM

#

i dont know why i would go to Steam

#

its not therir API - several thousand developers in teh world have working fine in UE4 - its something on MY pc - u gaurantee it 😭 I just dont knwo what

#

I Gaurantee* sorry

winged badger Oct 25, 2018, 10:19 PM

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sure, but chances are about the same of it having steam or ue as a root cause

#

without knowing anything else about the problem

worthy wasp Oct 25, 2018, 10:20 PM

#

i'll just try to reinstall steam

#

see if theres an option i missed

#

ooof yah there was lityerally ONE option (language) when installing steam lmfao

#

oh well - reinstalling now - seeing if htis fixes it

grand kestrel Oct 25, 2018, 11:26 PM

#

What would be the right way to stop an actor replicating, with the ability to restart (can't tear off) -- except for a single property (enables/disables replication)

#

I'm thinking using COND_Custom on everything would probably be best

#

Would mean not calling super on GetLifetimeReplicatedProps and working around the privatized variables

#

It's a bit tedious/hacky but should do it, if no one knows a better way?

worthy wasp Oct 25, 2018, 11:52 PM

#

the practice of using the conditional replication method is a bit out of my knowledge - but i do wonder why you would want to stop replicating?

neon mango Oct 26, 2018, 12:09 AM

#

Should steam still work with DefaultPlatformService = null?

worthy wasp Oct 26, 2018, 12:11 AM

#

no? DefaultPlatformService needs to be set to steam to work

neon mango Oct 26, 2018, 12:12 AM

#

@worthy wasp Shooter Game 4.20 has it set to Null and Steam's Shift + Tab works

#

However, when I try it for my game, steam's shift + tab does not work

#

If I do set it = to Steam I can get my Steam Shift + Tab to work

#

meaning it's live with steam

worthy wasp Oct 26, 2018, 12:12 AM

#

can or cant?

#

Mike Allar even says in his tech document to setup steam....

 DefaultPlatformService=Steam```

neon mango Oct 26, 2018, 12:13 AM

#

I'm confused how the Shooter game 4.20 has steam work with it set to null

#

also if set to Steam I get a crash when attempting LAN because it isn't = to Null

worthy wasp Oct 26, 2018, 12:14 AM

#

i stand corrected

#

https://allarsblog.com/2016/02/25/basicsteamintegration/

Allar's Blog

Enabling UE4's Steam Integration

This is the first step in a series of guides that will show you how to enable the OnlineSubsystemSteam module for your project. It does not cover session creation, session management, app id association, or anything specific to OnlineSubsystemSteam. These steps are the first ...

#

no

#

sorry

#

i misread the commented out line

#

it IS set to Steam

neon mango Oct 26, 2018, 12:15 AM

#

the config for the latest shooter game looks like this ```[OnlineSubsystem]
DefaultPlatformService=Null
PollingIntervalInMs=20
bHasVoiceEnabled=true

[OnlineSubsystemSteam]
bEnabled=true
SteamDevAppId=480
GameServerQueryPort=27015
bRelaunchInSteam=false
GameVersion=1.0.0.0
bVACEnabled=1
bAllowP2PPacketRelay=true
P2PConnectionTimeout=90``` with steam working

#

sorry edited, I showed mine

#

that is the exact .ini config for shooter game .420

#

well I changed the AppID to 480

#

They also do not do any NetDriverDefinitions

copper portal Oct 26, 2018, 1:14 AM

#

@fossil spoke I put my code in the onswapplayercontrollers in my lobby gamemode and everything works but the player list doesnt show. I copy the same code from the onpostlogin and it doesnt work. Here is my code for the update server event: (supposed to show the player list) https://gyazo.com/fc32262ce02f631f273cf1e093dc0da0 https://gyazo.com/c76a810dc56388ae0aeb17f97cf56ed3 https://gyazo.com/aa7daf016da0a3ffb9097b029b64fc5a and this is the code that I used in the postlogin event: https://gyazo.com/98a6dbf8c258beea15bd4db7666a97fb https://gyazo.com/8c13ed8955508420aad6eac32fff8896 https://gyazo.com/ab04a564168fedcfa2f8f1ff82422439 https://gyazo.com/c9d542fd81aea2df115465ce66ba77bf

Gyazo

fossil spoke Oct 26, 2018, 1:30 AM

#

Try debugging it with some PrintStrings?

copper portal Oct 26, 2018, 1:33 AM

#

I did

#

everything prints

#

I checked if the casts failed

#

and they didnt

neon mango Oct 26, 2018, 2:30 AM

#

@worthy wasp Looks like they set their config stuff in WindowsEngine.ini

#

that is why I was confused

neon mango Oct 26, 2018, 4:35 AM

#

How does one handle both steam and LAN in the same build without having to edit a .ini? or in what way does the .ini need to be setup to allow both?

worthy wasp Oct 26, 2018, 4:43 AM

#

@neon mango - you would make the lobby private - and instead of opening a remote IP address as the destination server to connect to (or if you're doing P2P connections) - you would use your default gateway (your routers IP address - make sure you have PORT FORWARDIGN set for port 7777) This is also a bit wonky - because port forwarding is only allowed to be declared once on most routers - which means you're going to have to circumvent who is host with some logic.... or work on mroe networking level things (higher end switch/router that supports multiple forwarding points look up VLAN)

neon mango Oct 26, 2018, 4:43 AM

#

@worthy wasp seemss I just need to exit steam for LAN to work

#

thanks for the tips though!

worthy wasp Oct 26, 2018, 4:44 AM

#

the kicker is going to be port forwarding

neon mango Oct 26, 2018, 4:44 AM

#

yea

#

right now though same machine is how I'm doing my testing

worthy wasp Oct 26, 2018, 4:44 AM

#

my shit linksys router @ home is only capable to port forward 1 time for a mapping

#

so - in my network - i would have to be the host EVERY TIME

#

because the game wont see it any other way

#

sorry... the router

slim holly Oct 26, 2018, 6:00 AM

#

man I need more coffee

#

📎 unknown.png

#

so server is actually replicating a lower value than client has

#

even tho client should be using the same value 🤔

opaque flicker Oct 26, 2018, 12:14 PM

#

can i exclude some clients from Multicast RPC ? if yes, how?

#

i'm trying to set visiblility of a player so his team can see him but the other team can't

#

what's the optimal way to do so

slim holly Oct 26, 2018, 12:21 PM

#

you can't do it with multicast

opaque flicker Oct 26, 2018, 12:24 PM

#

so how do u think i can do that ?

#

may be through interfaces ?

slim holly Oct 26, 2018, 12:26 PM

#

well it really depends do you want it cheat proofed

#

on client side it's a simple check is the team same as local player has

#

but on server you would also have to prevent replication, as if it really isn't there

cedar finch Oct 26, 2018, 6:02 PM

#

Do Event Dispatchers Replicate? Because I'm tryint to use one when my player dies and only the Server player executes the event that is binded to the Dispatcher. 😦

slim holly Oct 26, 2018, 6:12 PM

#

pretty sure they don't

gleaming vector Oct 26, 2018, 6:27 PM

#

they do not

cedar finch Oct 26, 2018, 6:32 PM

#

Thanks, So how would I go about making them replicate? Do I replicate the Call? The Binding? The Binded Event? Or all? lol

bitter oriole Oct 26, 2018, 6:33 PM

#

Call a client RPC from the server in the binded event

cedar finch Oct 26, 2018, 6:44 PM

#

@bitter oriole It still doesn't work. I must have something wrong. https://i.gyazo.com/1f015efbc08f4848c2df98320e1889d9.png

cedar finch Oct 26, 2018, 7:00 PM

#

Heavy Sigh...... Why can't I make it replicate. 😦

#

OH! Maybe becaue I'm calling the Event Dispatcher from my EventAnyDamage which is allways Server right?

cedar finch Oct 26, 2018, 7:38 PM

#

I got no clue. Well If anyone knows how to make an Event Dispatcher replicate when a player dies please let me know. I just want it to run when a player dies but it only works for the Server.

thin stratus Oct 26, 2018, 8:00 PM

#

You should only execute any form of "Died" event on the Server

#

Then all you have to do is to set a simple RepNotify marked boolean "bIsDead" to true

#

and do wahtever you need to do inside of the RepNotify functioon

#

@cedar finch

slim holly Oct 26, 2018, 8:01 PM

#

you could probably do the whole event on repnotify since it triggers on all

#

not sure did they change it at some point, but I was surprised it triggered even on client who tried to set it

modern dome Oct 26, 2018, 8:06 PM

#

The PlayerState contains a Player ID which is meant to be unique. Is there a Value that represents Null/None?

#

I am talking about this one

📎 unknown.png

thin stratus Oct 26, 2018, 8:07 PM

#

Isn't that wrongly named?

#

The actual NetID is in C++ and I think there is no BP function to get it

#

That number you have there is in fact unique, but only during the map you play

modern dome Oct 26, 2018, 8:08 PM

#

fuck

thin stratus Oct 26, 2018, 8:08 PM

#

Not even sure if it stays the same after a seamlesstravel

#

The number is like 123 or so

#

:P Def not unique among all games

twin juniper Oct 26, 2018, 8:16 PM

#

What determines NetCullDistance?

#

Is there a way to link netculldistance to AI that we "own?" For reference, this is for a RTS game.

modern dome Oct 26, 2018, 8:21 PM

#

@thin stratus Any advice to uniquely identify players by their Net ID?

thin stratus Oct 26, 2018, 8:24 PM

#

Adding C++ to your game

#

exposing the FUniqueNetIdRepl to BPs

#

It's already BP readable, even though you can't see what's in there

#

You just have to create a PlayerStateC++ class and write that BP Callable function

#

And Maaaaaaybe a second one in a BP function library that is static to compare two to be equal

#

Cause I think that's also missing

modern dome Oct 26, 2018, 8:28 PM

#

I see. I guess Some Plugin already handles shit like this :D

jolly siren Oct 26, 2018, 8:28 PM

#

Does anyone know if it is possible to combine a DOREPLIFETIME condition such as COND_OwnerOnly and a COND_Custom condition defined with DOREPLIFETIME_ACTIVE_OVERRIDE? Or can you only use one at a time? Trying to only replicate a property to Owner but based on another condition.

twin juniper Oct 26, 2018, 8:29 PM

#

I think I figured it out, I need to override IsNetRelevantFor()

winged badger Oct 26, 2018, 8:38 PM

#

@jolly siren i don't think it is

jolly siren Oct 26, 2018, 8:39 PM

#

Okay, yeah I didn't think so either

winged badger Oct 26, 2018, 8:39 PM

#

COND_ are enumeration members

#

so you could write in your own

#

but it would require editing the enum class = editing the engine

jolly siren Oct 26, 2018, 8:40 PM

#

Right, yeah don't want to do that

#

I guess you aren't supposed to use Role in DOREPLIFETIME_ACTIVE_OVERRIDE

winged badger Oct 26, 2018, 8:41 PM

#

is it something huge or are you trying to save a few bits of bandwidth?

jolly siren Oct 26, 2018, 8:41 PM

#

Just trying to save bandwidth. Gameplay only requires COND_OwnerOnly for certain things, but my instant replay feature requires it to be sent to the simulated clients too if enabled.

#

But that's okay, was just checking to see if it was possible

winged badger Oct 26, 2018, 8:42 PM

#

    RepState->ConditionMap[COND_None]                        = true;
    RepState->ConditionMap[COND_InitialOnly]                = bIsInitial;

    RepState->ConditionMap[COND_OwnerOnly] = bIsOwner;
    RepState->ConditionMap[COND_SkipOwner] = !bIsOwner;

    RepState->ConditionMap[COND_SimulatedOnly] = bIsSimulated;
    RepState->ConditionMap[COND_SimulatedOnlyNoReplay] = bIsSimulated && !bIsReplay;
    RepState->ConditionMap[COND_AutonomousOnly] = !bIsSimulated;

    RepState->ConditionMap[COND_SimulatedOrPhysics] = bIsSimulated || bIsPhysics;
    RepState->ConditionMap[COND_SimulatedOrPhysicsNoReplay] = (bIsSimulated || bIsPhysics) && !bIsReplay;

    RepState->ConditionMap[COND_InitialOrOwner] = bIsInitial || bIsOwner;
    RepState->ConditionMap[COND_ReplayOrOwner] = bIsReplay || bIsOwner;
    RepState->ConditionMap[COND_ReplayOnly] = bIsReplay;
    RepState->ConditionMap[COND_SkipReplay] = !bIsReplay;

    RepState->ConditionMap[COND_Custom] = true;

    RepState->RepFlags = RepFlags;

#

maybe you can hack into some of that

jolly siren Oct 26, 2018, 8:42 PM

#

I'll take a look. Thank you Zlo

winged badger Oct 26, 2018, 8:43 PM

#

its in RepLayout.cpp

strong abyss Oct 26, 2018, 9:03 PM

#

Not sure if this is the correct place. But I have a multiplayer FPS game and I am getting an error in an animation blueprint. The players and weapons each ahve a 3rd person mesh and a first person mesh. The first and third person meshes for the players each have their own anim blueprint and the first person mesh for the weapon also has an animation blueprint.
The Animation blueprint for the weapon is crashing the game with the error
Assertion failed: Index >= 0 [File:D:\Build\++UE4+Release-4.19+Compile\Sync\Engine\Source\Runtime\CoreUObject\Public\UObject/UObjectArray.h] [Line: 445]
It only happens on clients as far as I have been able to tell.
Here is the animation Blueprint. As you can see, I am checking IsValid on all relevant data, but looking at the call stack, it looks like the IsValid node is what ends up crashing the game.

📎 unknown.png

#

It appears to only be happening when a player dies and not every time.

thin stratus Oct 26, 2018, 9:05 PM

#

Wasn't casting a nullptr in BP already bad?

#

So "GetOwningActor" should already have an IsValid

#

Despite that, it's not an access none error, but an assertion

#

Small tip for cleaner code: Set the "Something is not valid" result BEFORE doing your code.
E.g. "Set ADS false" before even checking the WeaponRef. That causes the same result and you don't have these ugly wires everywhere

strong abyss Oct 26, 2018, 9:08 PM

#

Cool thanks! Still learning blueprints!

thin stratus Oct 26, 2018, 9:08 PM

#

In addition, are you properly cleaning up the Weapon when the Player dies?

strong abyss Oct 26, 2018, 9:09 PM

#

I am looking into that now, the idea is to spawn a weapon drop and pass the weapon along to teh weapon drop.

#

So that others can pick it up.

#

I'm not sure what you mean by the first part. I thought casting a nullptr (say if GetOwningActor is returned a nullptr), then the cast would simply just fail like if it was trying to cast anything else?

thin stratus Oct 26, 2018, 9:16 PM

#

Yeah thing is, in C++ it would probably just fail

#

In BPs I'm not sure

#

I think it actually causes AccessedNone if it tries to cast a nullptr

strong abyss Oct 26, 2018, 9:20 PM

#

okay. I will check that out.

grand kestrel Oct 26, 2018, 9:28 PM

#

@jolly siren if you figure it out I'd be interested in seeing what you find

heady epoch Oct 27, 2018, 5:21 AM

#

Our dedicated server when connected to slowly increases the ping of players over time. As high as over 800. What could be causing something like that?

rose egret Oct 27, 2018, 2:58 PM

#

whats the proper why to add computer played team and player to the multiplayer game?
actually my prototype game is like RTS and I use PlayerState for a online connected player. player state is used as reference for owner and many things. can I create PlayerState for CPU played teams?

winged badger Oct 27, 2018, 3:05 PM

#

you can create a PlayerState for any Pawn/Controller

#

it should just have bIsBot flag set to true (think it does it automatically)

#

so you don't mess up with functionality of some engine functions like IsPlayerPawn()

polar sun Oct 27, 2018, 4:03 PM

#

If I call GetCharacterMovement() in a custom characters cpp class, will it only get the first players character movement?

#

I have a problem where the second player to join the game has different movement. And I did a bunch of editing to the character class in order to get the specific movement I wanted.

#

i.e. void AMyCharacter::SetGroundFriction() { // Friction will be higher when the player is moving if (GetMovementComponent()->IsMovingOnGround()) { if (GetCharacterMovement()->GroundFriction < MaxGroundFriction) { GetCharacterMovement()->GroundFriction += .2f; } } else { if (GetCharacterMovement()->GroundFriction > OriginalGroundFriction) { GetCharacterMovement()->GroundFriction -= .2f; } } }

fluid flower Oct 27, 2018, 4:08 PM

#

it depends on where you're calling that function. You need to call it on an instance of a character

polar sun Oct 27, 2018, 4:09 PM

#

    Super::Tick(DeltaTime);

    SetGroundFriction();
    SetAirFriction();
...```

#

It's all being called from within MyCharacter.cpp

cedar finch Oct 27, 2018, 8:28 PM

#

@thin stratus I know you told me to use Repnotify last night in order to let other players know that someone died but I don't know if it works for my situation. I'm trying to make an event or something else run for the Spectator of the person who died. So for example Me and you are playing. I'm dead and am spectating You playing. Then while I'm spectating You, you die. My spectator character is left sitting there able to fly around the map. What I want to happen is for it find another alive player to spectate if there are any. You get what I'm saying? I set my spectating system up inside PlayerState. I just get an array of all ThirdPersonCharacters then set an index of which one I'm spectating, Then blend to their camera. I also have two more events for switching to Next or Previous Player. So my issue is when the alive player dies, he doesn't know how to communicate his death to the person who is spectating him because He doesn't even know who's spectating him. https://i.gyazo.com/49012facae3689241ff64032977c2766.png https://i.gyazo.com/210398005b7d5abacd5f7d4bac648663.png https://i.gyazo.com/a8a3a684fb82bac66f810bb94858ee36.png

thin stratus Oct 27, 2018, 8:36 PM

#

Keep a list of Spectators on the Character

#

If he dies, iterate over that array and tell everyone that he died

#

So basically whenever someone is spectating a Player, you tell the Player BP that there is a Spectator by putting that someone into the Array.

fluid flower Oct 27, 2018, 8:39 PM

#

yeah or perhaps the other way around, the spectator responds to when the character he spectates is gone, and tries to find another one

grand kestrel Oct 27, 2018, 8:47 PM

#

How often is GetLifetimeReplicatedProps called -- only once? Or does it keep checking it? I assume only once but want to confirm

thin stratus Oct 27, 2018, 8:51 PM

#

@fluid flower Well that way he would either need to poll the state (which is bad) or use the EventDispatcher again.

#

The EventDispatcher should work though. Idk what he tried back then. Didn't know he wanted to tell a different class about it as the screenshot didn't show that

fluid flower Oct 27, 2018, 8:52 PM

#

yeah I personally wouldn't poll

thin stratus Oct 27, 2018, 8:52 PM

#

The Array i suggested is basically the same thing

fluid flower Oct 27, 2018, 8:52 PM

#

also depends on his implementation, if the character actually gets destroyed, it's even easier, but I've seen games not actually Destroy() actors when they die, but set intermediate 'death' states

#

but yeah, just listening on the OnCharKilled or whatever should work if set-up right

#

@thin stratus the array way certainly works 😃 I just somehow feel the Character class should not care who's spectating it, would be a nice place for the spectator class itself to handle all that

#

just my own OCD 😃

thin stratus Oct 27, 2018, 8:55 PM

#

Sure sure, it's late. The Dispatcher is def the better way

cedar finch Oct 27, 2018, 8:57 PM

#

@fluid flower My players are destroyed when they die. @thin stratus Ok so I made a variable inside my playercharacter called "ArrayOfSpectators" Then I add my Spectators PlayerController to the array and once the PlayerCharacter dies I run the event to find a new spectator in my playerstate. But its not working. https://i.gyazo.com/b6fa6cdbd4308122c6037a13db03313b.png https://i.gyazo.com/547afcf92b3b6f0f2b88cfb0339003dd.png

thin stratus Oct 27, 2018, 8:57 PM

#

Sooo, wait

#

The EventDispatcher should work

cedar finch Oct 27, 2018, 8:58 PM

#

The Event Dispatcher works only for Server player

fluid flower Oct 27, 2018, 8:58 PM

#

@cedar finch when you START spectating an actor, just bind on it OnDestroyed event, and when it fires, find a new target to spectate

thin stratus Oct 27, 2018, 8:58 PM

#

Where are you even starting that

#

On the Server?

#

On the Client?

#

This seems to be a replication issue

cedar finch Oct 27, 2018, 8:59 PM

#

@fluid flower I did and it only works for the Server Player

fluid flower Oct 27, 2018, 8:59 PM

#

then as @thin stratus said, probably a replication issue

thin stratus Oct 27, 2018, 8:59 PM

#

https://puu.sh/BRXJV/6e89b9b658.png

#

Let's say this is the setup okay?

#

This is called on the Server

#

In the Character, when they die

#

So at that point, whoever is listening to that call, is on the Server end

grand kestrel Oct 27, 2018, 9:00 PM

#

Answered my own question internally Unreal only ever calls GetLifetimeReplicatedProps() on the first instance of an object of a given class and it expects to be given the replication layout for that class, not for an instance of that class

thin stratus Oct 27, 2018, 9:00 PM

#

Let's further say you have some function to start Spectating, that one is ALSO called on the Server.
In that you bind to the OnDied event: https://puu.sh/BRXL9/8b541c16a7.png

#

"SpectatePawn" should that be

#

Can't type

#

So "OnPawnDied" calls in, for example, your PlayerState

#

On the serverSide of things

#

From there on you can call a ClientRPC for example

#

To shift the View to a new player

fluid flower Oct 27, 2018, 9:01 PM

#

@grand kestrel yeah it just calls it once and generates the needed data format to then always replicate actors of that class properly

#

so you can't do crazy runtime changes to the conditions etc:)

grand kestrel Oct 27, 2018, 9:04 PM

#

Yeah, well, that is what COND_Custom is for at least

cedar finch Oct 27, 2018, 9:04 PM

#

@thin stratus Ok so I have my health with the dispatcher. then I set the Bind right after the setting of the spectators new person to spectate. https://i.gyazo.com/bf8aec061c1dd914f8cdc6ce9965d713.png https://i.gyazo.com/6fc59fa49c3f6e1ae70f48ffaefcfd1a.png

#

I have to be missing something because that print string only prints when the Server player dies. Never works for clients

fluid flower Oct 27, 2018, 9:21 PM

#

Are you managing to get any kind of spectating working? The first time perhaps?

cedar finch Oct 27, 2018, 9:22 PM

#

@fluid flower It all works I believe I just cant get clients to switch to another player when the person they are spectating dies.

fluid flower Oct 27, 2018, 9:24 PM

#

@cedar finch How I would do it is: You have 2 classes, Character and Spectator ( I assume). When you possess a spectator, you immediately start looking for a Character to spectate ( FindNewCharToSpectator() for example ). In that function you when you find a Character, you bind to its OnDestroyed event and now you wait for it to die. Eventually, that Char will die and the server will call Destroy() on it. Since that character is replicated, the OnDestroyed you bound will be called on both Server and Client. So now you can choose whatever you want to do from there, call FindNewCharToSpectator again perhaps.

cedar finch Oct 27, 2018, 9:26 PM

#

That's what I thought I did lol

#

Here is it working for the server player. https://i.gyazo.com/585df5fc571dac8bd0b95dfc9fc11f7c.gif

fluid flower Oct 27, 2018, 9:27 PM

#

can you show the bit of blueprint where you select a character to spectate and bind to its OnDestroyed?

#

perhaps we missed something 😃

cedar finch Oct 27, 2018, 9:29 PM

#

https://i.gyazo.com/14ac70bd08d0831eabd45d5beb7b01f1.png https://i.gyazo.com/c4f682b914fb841efb544a62838e17a0.png https://i.gyazo.com/1e18f0fea3ea0b512ea35ed6dd20b2a0.png

#

I'm not sure if it's right but I connected my "spectateNextPlayer" and "spectatePrevPlayer" Events to the OnDestroyedBind too.

fluid flower Oct 27, 2018, 9:31 PM

#

can you try the OnDestroyed please, so not your own dispatcher

#

but the built-in Destroyed event

#

and we debug from there

#

and just print a text on when it gets fired, so we see where/when it gets fired

cedar finch Oct 27, 2018, 9:32 PM

#

Oh yea. ok let me try

#

Ok https://i.gyazo.com/cb9e0a23bfa164e4b4e5a03590bc2b1d.png

#

Prints on Server only

#

Now what? RPC?

fluid flower Oct 27, 2018, 9:36 PM

#

yeah, lets try that next

#

i personally use a custom spectator system, can you check if the default spectator class is even replicated lol

cedar finch Oct 27, 2018, 9:37 PM

#

How do i check that lol?

fluid flower Oct 27, 2018, 9:37 PM

#

open the spectator blueprint

#

then click the class info or details etc

#

one sec lol, I'll launch my editor

#

i forget the real terms haha

cedar finch Oct 27, 2018, 9:38 PM

#

I'm just using the default spectatorPawn

#

in c++ it says //bReplicates = true;

#

idk if that means anything

#

I made a custom spectator and it's defaulted to replicate I believe so maybe the built in one does too?

fluid flower Oct 27, 2018, 9:42 PM

#

yeah so that means it replicates

#

was gonna say this:

#

📎 unknown.png

#

📎 unknown.png

#

then there

cedar finch Oct 27, 2018, 9:42 PM

#

Yea

fluid flower Oct 27, 2018, 9:43 PM

#

ok so it replicates

#

and ondestroyed gets called on server

#

so now try the RPC

#

create a new RPC and set it to reliable, and lets start with Multicast and then call it

cedar finch Oct 27, 2018, 9:45 PM

#

Ok I did it and now it's acting weird. So the Client always spectates the Server when they first die. Also when the Dead Client switches to the next player to spectate they still are seeing the camera rotation from the server player they were spectating before.

#

https://i.gyazo.com/7a84b6c9b87c0ca6e6abf75bbf188299.gif

#

Server is on left, client on right. Huh..... why me lol

#

https://i.gyazo.com/15c09b3afb39b361cec3d4ad1015b13c.png

fluid flower Oct 27, 2018, 9:49 PM

#

does the function run on client at least?

cedar finch Oct 27, 2018, 9:49 PM

#

Ok so it has to be a replication issue with how I set my "SetWhoToSpectate" event. If I set it to run on owning client I dont get that.

fluid flower Oct 27, 2018, 9:50 PM

#

yeah, once you get that function to run on client, your next task is to figure out what the spectator system prefers: should it be called on server, should it be called on owning client etc

#

that I can't help you with because I skipped unreals built-in spectator stuff, but I can help you with general replicatoin stuff, so I hope that function arrived on the client haha

cedar finch Oct 27, 2018, 9:52 PM

#

I haven't found anything anywhere on spectating systems. lol

#

So now that the event runs on owning client if the Client player spectates the Server player the camera rotation doesn't work for the spectator. https://i.gyazo.com/1e72968be042f8102e4084aafaaf26f9.gif

#

Client on right doesnt update the rotation of the camera

fluid flower Oct 27, 2018, 9:55 PM

#

yeah, that stuff is a hell of checkboxes etc

#

i skipped it for a much simpler custom system for that reason haha

cedar finch Oct 27, 2018, 9:55 PM

#

If you know how to make an easier spectator system i'm all ears. This is ridiculous lol

#

I've been struggling to find anything online

#

I'm going to go grab something to eat and will be right back.

#

My guess is its an event somewhere in this mess of a chain of events that's set to the wrong replication type

#

@fluid flower Can I walk through my event and you help me see If I set one wrong?

fluid flower Oct 27, 2018, 10:03 PM

#

i doubt I'll be able to help you with spectator stuff, it's old nasty code imo

#

but in case you're curious how I did it, what I do is I just do it in PlayerCameraManager

#

in there, if I have a live pawn that I'm controlling, I just follow the normal camera code, but if my ViewTarget is another pawn, I set the camera location/rotation based on that viewtargets orbit

#

super basic, gets the job done for my projects

#

and I've got 1 function that tells the camera manger to start spectating any actor, even a random prop

#

having said that, I DID get the built-in spectator stuff working when I was working for Epic, cus...it'd be weird if I discarded our own code haha

#

so its definitely possible, I just don't remember the nuances anymore

cedar finch Oct 27, 2018, 10:06 PM

#

What built in spectator stuff? lol The only thing I used from the engine was the spawning of the SpectatorPawn. lol

#

When a player dies I tell the Gamemode to spawn a SpectatorPawn and Possess it, then I tell the PlayerState to get who to spectate and set view target with blend

#

That's it

#

PlayerCharacter -->> Calls Gamemode -->> PlayerState

fluid flower Oct 27, 2018, 10:09 PM

#

i think you're very close haha, my brain is just fried atm, time for bed soonish 😃

#

Let me know if you need help once im online tomorrow if you haven't solved it yet, happy to help out

cedar finch Oct 27, 2018, 10:10 PM

#

Ok cool. Thanks for your help. I take it your not on Eastern Time USA? lol

#

I have a friend who helps me sometimes from the Netherlands and man its like a 6hr difference

#

@fluid flower You'll never believe it.... I fixed it.! It was in the Gamemode. I set the event to OwningPlayer and now it works.

fluid flower Oct 27, 2018, 10:13 PM

#

nice!

#

i knew you were very close 😃

#

and yeah im in Amsterdam/Berlin time

cedar finch Oct 27, 2018, 10:13 PM

#

Wow far away! lol

fluid flower Oct 27, 2018, 10:16 PM

#

😄

solar halo Oct 27, 2018, 10:18 PM

#

I'm using GetPlayerName to get the players name from Steam. This works fine when the game is launched PIE Standalone, but when launched from Steam client it shows my desktop name. Ideas?

#

I've used this method before and it's worked fine, but now it doesn't.

warm summit Oct 27, 2018, 10:20 PM

#

Hey guys, so i made a pickup system that changes a variable in the character. On the serverside it works perfectly fine, but when I try it on the client side it only gets to the print String: "interact exec" any ideas why it doesnt work?

📎 UE_11.PNG

winged badger Oct 27, 2018, 10:23 PM

#

the pickup doesn't have a PC as a netowner

#

so it can't send ServerRPCs

#

also whatever Object pin is, it might not be valid on both client and server, can't tell from the screenshots

#

the TypeGun integer is also an unfortunate choice, but in this case it won't break what you're trying to do

#

you should at least rethink the name

warm summit Oct 27, 2018, 10:26 PM

#

here's the other part

📎 UE_12.PNG

#

where i get the object

winged badger Oct 27, 2018, 10:27 PM

#

you got any "No owning connection for.. " in the OutputLog?

warm summit Oct 27, 2018, 10:27 PM

#

and I dont understand what you mean with netowner

#

no

winged badger Oct 27, 2018, 10:28 PM

#

i think you do, only objects in PlayerControllers ownership chain can send Server RPC or receive Client RPCs

#

which is unlikely to be the case for a PickupActor

#

and when you try to send a Server RPC from an object that doesn't have a PlayerController as ultimate owner, then you get "No owning connection for... " log entries, warning category

warm summit Oct 27, 2018, 10:30 PM

#

ok, so what's your advise?

winged badger Oct 27, 2018, 10:30 PM

#

on server exec, the Server RPC isn't an RPC, its just a normal event/function

warm summit Oct 27, 2018, 10:31 PM

#

ah ok

winged badger Oct 27, 2018, 10:31 PM

#

your Object there is the PlayerPawn?

#

OtherActor in Overlap

warm summit Oct 27, 2018, 10:32 PM

#

yes

winged badger Oct 27, 2018, 10:32 PM

#

it can send a Server RPC

#

so make an event that handles pickup inside of it instead

warm summit Oct 27, 2018, 10:33 PM

#

inside of the controller or the pawn (character)

winged badger Oct 27, 2018, 10:33 PM

#

basically, the PlayerController, PlayerState, PlayerPawn, any of their Components, any Actors attached to any of them, and any Actors that have PlayerController explicitly set as the owner via SetOwner (on server) can send RPCs

warm summit Oct 27, 2018, 10:34 PM

#

ok

#

If it helps, here's the mess I made in the Character Blueprint

📎 UE_13.PNG

winged badger Oct 27, 2018, 10:35 PM

#

yeah, instead of calling GunEquip on the PickupActor

#

handle entire pickup logic right there on InputAction

#

if it makes too much mess in the PlayerCharacterBP

#

you can always make a Pickup/InteractionComponent and put the logic in there instead

warm summit Oct 27, 2018, 10:38 PM

#

haha yes

#

dude thanks so much 😛 now everything works 😃 I'll remember the RPC shenanigan 😉 @winged badger

#

one more question, what di you mean with integer isn't a good choice?

winged badger Oct 27, 2018, 11:35 PM

#

i said unfortunate, as it is now

#

if its supposed to be a number to identify a weapon type

#

you should really have ID in the name

#

even ones own code can be confusing after just a few weeks, if not written with readability in mind

fluid flower Oct 27, 2018, 11:49 PM

#

what else does it say?

humble zealot Oct 28, 2018, 2:33 AM

#

anyone can help me with port forwarding port 7777, i have it done just doesnt say its open for some reason

thorn crescent Oct 28, 2018, 9:52 AM

#

could someone help me with a dedicated server build. Ive been trying multiple different ways I just can't seem to find one that works like it's intent

twin juniper Oct 28, 2018, 12:30 PM

#

{
    // We want to see if any of the Units or Structures that our PlayerController owns are within the net relevancy distance

    const AInGameDeathAlleyPlayerController* PC = Cast<AInGameDeathAlleyPlayerController>(RealViewer);
    if (PC->UnitsWeOwn.Contains(this))
    {
        return true;
    }
    for (AUnit* MyUnit : PC->UnitsWeOwn)
    {
        if (IsWithinNetRelevancyDistance(MyUnit->GetActorLocation()))
        {
            return true;
        }
    }

    if (IsWithinNetRelevancyDistance(PC->BaseActor->GetActorLocation()))
    {
        return true;
    }

    return Super::IsNetRelevantFor(RealViewer, ViewTarget, SrcLocation);
}```

#

Does this make sense?

#

How often is "IsNetRelevantFor" called though?

#

What if we want to do a fog of war setup where units become net relevant only when we have a unit within a radius around them?

slim holly Oct 28, 2018, 1:28 PM

#

iirc relevancy timer is 5sec

#

or I remember reading something like that

twin juniper Oct 28, 2018, 1:36 PM

#

Is there a way to speed it up? Do we just increase "NetUpdateFrequencyh?"

#

I kind of want an instant update.

modern dome Oct 28, 2018, 3:01 PM

#

I have a Shared Camera Blueprint which is set to Replicate and NetLoadOnClient.
When a Second Player joins, it says the Camera is not Valid though.

#

this is within GameMode

📎 unknown.png

#

this is within my PC

📎 unknown.png

#

this is the Camera Actor's Settings

📎 unknown.png

fluid flower Oct 28, 2018, 3:23 PM

#

perhaps it hasnt been replicated yet in begin play

#

sometimes beginplay is too soon, so as a test, try a quick delay to see if that might be the issue

slim holly Oct 28, 2018, 3:29 PM

#

true, replicating gamestate takes few seconds

#

no you should not be saving cameras to gamestate

#

fastest way to send the camera reference to new players is through PostLogin event in gamemode

#

or OnPlayerRestart

modern dome Oct 28, 2018, 4:11 PM

#

Doesn't Net Load On Clients mean it is replicated immediately when a player joins?

humble zealot Oct 28, 2018, 5:09 PM

#

anyone can help me with port forwarding port 7777, i have it done just doesnt say its open for some reason

fluid flower Oct 28, 2018, 8:23 PM

#

@modern dome yes, as fast as it can, but thats not on frame 0

worthy wasp Oct 29, 2018, 1:35 AM

#

anyone experienced with Playfab in here?

#

having some hiccups understaind custom cloud code return values - i'm trying to make some custom stuff and doing cloud code execution - but my return values arent happening.

maiden vine Oct 29, 2018, 2:47 AM

#

what's the best way to set an enemy index of the order they were placed in the level?

#

get all actors of class and for each loop are giving different results

maiden vine Oct 29, 2018, 3:25 AM

#

never mind i put get length - 1 in construction script it does it for me

thorn crescent Oct 29, 2018, 8:09 AM

#

Hey does anyone know how to fix the "Server Target is required with -cook or -cookonthefly"

drifting plank Oct 29, 2018, 10:14 AM

#

Hey !
Is that a good place to put my "match max duration" in my GameState class to access it easily on my clients ?

versed socket Oct 29, 2018, 12:39 PM

#

@drifting plank Yup!

drifting plank Oct 29, 2018, 1:08 PM

#

Thanks 😃

modern dome Oct 29, 2018, 6:36 PM

#

@fluid flower Net Load on Client -> Actor is considered for immediate Replication when it is spawned just like the rest of the map.
If this isn't guaranteed, then this flag is useless

#

I wait a few seconds before Player 2 joins. that should be enough time to make it replicate

rare yoke Oct 29, 2018, 7:57 PM

#

Hey guys, I'm working on server-wide questing (Where everyone on the server shares the quests) - which class would I be best off using to run all the events on? I'm going to make a BP Component for the code, but I was wondering where the best place to use it would be?

I was initially thinking GameMode/GameState/PlayerState but unsure which is best

modern dome Oct 29, 2018, 8:07 PM

#

Dedicated or Listen Server?

winged badger Oct 29, 2018, 8:07 PM

#

GameState is the only of the 3 that lets you use the component as a context for the UMG

#

and letting players know what state the quest is in is the only thing you really need to do outside the server

#

i mean, PlayerStates are replicated, but which PlayerState? you have at least as many as you have players

rare yoke Oct 29, 2018, 8:26 PM

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@modern dome Listen server

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@winged badger Thanks for the reply, definitely sounds like GameState is the one to go for from what you've said.

hasty adder Oct 29, 2018, 8:34 PM

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@humble zealot check your firewall

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Probably need to open it on the computer to accept tcpip/udp

austere rock Oct 29, 2018, 8:54 PM

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any one know how to remove widgets from client players? also where would be best place to create widget (gi,gm,gs,pc,ps,etc) mine only removes from the server

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📎 remove_from_viewport.png

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this is player controller and is called when a launch game from lobby

hasty adder Oct 29, 2018, 8:59 PM

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Is local controller

austere rock Oct 29, 2018, 8:59 PM

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📎 start_match.png

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think it maybe because i call player controller one

hasty adder Oct 29, 2018, 9:00 PM

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That too

austere rock Oct 29, 2018, 9:00 PM

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not sure what to put here i tried doing for each loop with all saved player controllers

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would it be better to put in player state?

cedar finch Oct 29, 2018, 9:21 PM

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Do I need to destroy Spectator actors when they respawn and possess a new actor?

austere rock Oct 29, 2018, 9:23 PM

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dont believe so

cedar finch Oct 29, 2018, 9:24 PM

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Do they go away themselves or just don't even take up any resources to matter?

austere rock Oct 29, 2018, 9:25 PM

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well id imagine its only very small recource hit

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but i may not be best person to answer since i havent really dabbled much into spectator yet

cedar finch Oct 29, 2018, 9:28 PM

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lol Its all good. I was just curious. I have a coop game I'm working on and players are probably going to be dieing and respawning alot so I didn't know if I need to clean up the spectator actors I spawned

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I'll just destroy them just in case lol. 😉 no harm in that

austere rock Oct 29, 2018, 9:38 PM

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yea better be safe than lagy

fossil spoke Oct 29, 2018, 10:11 PM

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Why does a Map not work?

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A Map should work fine

copper portal Oct 29, 2018, 10:17 PM

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@fossil spoke @thin stratus I fixed all the issues with my return to lobby issue. Thanks for your help!

fossil spoke Oct 29, 2018, 10:37 PM

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Is that a type that Advanced Sessions introduced im assuming?

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Are you using Steam?

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Caching the SteamID if that is available would be a better method i assume.

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Not sure if they expose that.

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Never used Advanced Sessions plugin.

fossil spoke Oct 29, 2018, 10:54 PM

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Steam isnt available in PIE, it will only show the actual ID with Standalone

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253 is probably the ID from PIE

sharp arrow Oct 30, 2018, 1:00 AM

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can someone help me im wana replicate this so ti gets the owners weapon to show the data of lets say fi iuts a gun the buillets coutner etc

📎 unknown.png

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because if i play now in the screen of one of them works but in the other it says its 0

#

📎 unknown.png

#

📎 unknown.png

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the top one is the server the bottom one si the client

strong abyss Oct 30, 2018, 1:31 AM

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Are the variables marked as replicated?

#

You can also print something if the cast fails or the IsValid fails to see if one of those is the problem.

sharp arrow Oct 30, 2018, 1:40 AM

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it is replicated but is not getting it for the ui

thorn yarrow Oct 30, 2018, 1:44 AM

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is the component it is referencing from set to replicate?

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or is that a component

sharp arrow Oct 30, 2018, 1:45 AM

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what component

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you mean the variable

thorn yarrow Oct 30, 2018, 1:45 AM

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weapon reference

sharp arrow Oct 30, 2018, 1:46 AM

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i got it by casting my character to here so i can get that variable reference that is in the char

thorn yarrow Oct 30, 2018, 1:46 AM

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the variable is an actor or component

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main hand weapon

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its valid, and not a replicated variable, so presumably, its a component, like you weapon attachment component which informs you what weapon you have equiped, right?

sharp arrow Oct 30, 2018, 1:48 AM

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actor

thorn yarrow Oct 30, 2018, 1:48 AM

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oh?

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okay

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so its an actor

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this actor is being spawned how

sharp arrow Oct 30, 2018, 1:49 AM

#

📎 unknown.png

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whait a min elt me look for the bp

thorn yarrow Oct 30, 2018, 1:50 AM

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if thats the case, seems like the client and server are using different references to the actor

sharp arrow Oct 30, 2018, 1:50 AM

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📎 unknown.png

thorn yarrow Oct 30, 2018, 1:50 AM

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let me look

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so everyone is spawning the actor themselves?

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from what I see

sharp arrow Oct 30, 2018, 1:54 AM

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yup

thorn yarrow Oct 30, 2018, 1:57 AM

#

because what we should see in your first screenshot with the UI, like the two dots on the inventory reference, we should see two dots on the main hand reference, in addition to that, only the server should spawn the actor and assign the player spawning it, as the owner, in the spawn actor on spawn properties

sharp arrow Oct 30, 2018, 1:59 AM

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inside the actor im getting the name of the row in the data table to set it

📎 unknown.png

thorn yarrow Oct 30, 2018, 2:00 AM

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because whats happening now from what I understand is that, the server has its own actor, which is likely replicating to everyone, the clients each, have their own actor, which no one including the server sees.

sharp arrow Oct 30, 2018, 2:03 AM

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📎 unknown.png

thorn yarrow Oct 30, 2018, 2:04 AM

#

but simply because the variable [main hand] isn't replicated, the client's ref to main hand on them, isn't being forcibly replaced by the servers ref which is actually being replicated and seen as in the top of the screenshot

sharp arrow Oct 30, 2018, 2:05 AM

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for what i reading i can be wrong since my main language is spanish not english your saying that replicate the variable of the main hand weapon actor isnt necesary

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but what i want it to do is in each one show the bullets eahc one has in their weapons

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but if i replicate the variable its gona work whats down there but everything else i have there is gona get ruined

thorn yarrow Oct 30, 2018, 2:10 AM

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if you replicate the variable now, it'll just work

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the main hand ref

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but you'll end up with multiple actors not being used

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you can go both ways, to replicate or not to replicate is up to answer

ocean dust Oct 30, 2018, 2:11 AM

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Hello, all. I'm trying to set up my game for Steam integration. I have changed my DefaultEngine.ini, set up my Build.cs file, and all that stuff. The Steam integration works ONLY if I launch the game Standalone from the editor, but DOESN'T integrate with steam if I cook a build. What am I missing? Thanks!

thorn yarrow Oct 30, 2018, 2:13 AM

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If you replicate main hand ref, you need to only spawn it on the server

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If you don't replicate main hand ref, you need to replicate to your character to update the main hanf ref on the individual clients spawned actors that way

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I personally go the latter route because I don't like spawning actors and replicating them to everyone

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I just give everyone with the actors, and update them through RPCs as necessary.

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at least in this specific case

sharp arrow Oct 30, 2018, 2:25 AM

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remember that my problem is int eh widget lol

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but spawning it works perfect

thorn yarrow Oct 30, 2018, 2:30 AM

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this is all related to your game player and main hand reference

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what I said

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MainHandWeaponReference needs to be set to replicate OR you need to RPC your main player pawn. These rpcs will then update the MainHandWeaponReference.

copper portal Oct 30, 2018, 2:50 AM

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When the host of a match starts the game, they can't see the nametags or score tags of any player including themselves in the first round. After everyone respawns, they can see it. I have printed string to check if the nametag has a null input and it doesnt. This is what I do for my score and nametag: https://gyazo.com/96e41d371c837ff73786594776de8689 and I set the var in event possessed: https://gyazo.com/9c477a04e5c06c3bef79629ccd5b24c4 All that code is done in my character bp and in the widgets, I do this: https://gyazo.com/e066db9c2a7f83706a4bc5008638f60d (the variable is replicated). What should I do to make the host see tags in the first round?

Gyazo

sharp arrow Oct 30, 2018, 4:10 AM

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the thing is that in mine if i replicate it than is gona screw the equip/unequip completly

thorn yarrow Oct 30, 2018, 4:23 AM

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try and set MainHandWeaponReference to replicated in the details panel, let know what happens

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@sharp arrow

fleet raven Oct 30, 2018, 6:08 AM

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oh wtf, it's possible to spawn on a server and receiving a character before having replicated the player state

#

this is kinda annoying how all the replication stuff is so non-deterministic and eventually happens but you can't know when or control the order

winged badger Oct 30, 2018, 7:42 AM

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you do have some common points where all execution passes though

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like SetPawn being called from both Possess and OnRep_Pawn

slow dew Oct 30, 2018, 11:12 AM

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Hello guys. I'm beginner, and i have a question. please don't laugh at me.

#

How to make a aim down sight like this

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https://answers.unrealengine.com/storage/temp/108714-screenshot_71.png

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for first person

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not true first person

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should i move the weapon or an animation to move it?

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if you have a template, please share that

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tnx

full bane Oct 30, 2018, 12:04 PM

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depends on your setup, but easiest way to do it is to author your animations to be perfectly aligned with the center of the screen

#

then you can assemble everythign inside of a first person animation blueprint

#

but you can also do it procedurally by just moving the weapon in code

twin juniper Oct 30, 2018, 12:06 PM

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How often is Network Relevancy updated?

#

I want to create custom relevancy rules by overriding IsNetRelevantFor(). However, I am not sure how often it will update.

faint pelican Oct 30, 2018, 12:29 PM

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I don't know the answer to Nonono's question, but for Predator, wouldn't the easiest way to at least set up a prototype is to just child the gun / sight transform to the camera's transform? Depends of course how you set it up whether that's viable, but that should make it always centered (although it'll need some nice animations for it not too look awkward)

tender gale Oct 30, 2018, 2:06 PM

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quick question: property/state replication in unreal, is that 100% reliable ordered? or is it reliable un-ordered? etc.

#

basically what happens if a packet with say health=100 is dropped

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will it resend the same update for health=100, or will it take the current value of health and resend that

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contrived example, sure

bitter oriole Oct 30, 2018, 2:12 PM

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I don't believe it's reliable

#

Though something like health doesn't really need to be reliable

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Reliable means your game can't work if you don't get the information. Health updates, you're bound to get another one later on

tender gale Oct 30, 2018, 2:24 PM

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@bitter oriole yeah sure, im more thinking about how it actually works basically. Maybe reading the source code is better.

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Like how it tracks what data needs to be sent to each client, etc.

bitter oriole Oct 30, 2018, 2:24 PM

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Yeah, can't say I've ever cared about how it works internally

tender gale Oct 30, 2018, 2:25 PM

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I design/build networking systems for games for a living and realized i had never dug into what unreal does, so wanted to well... understand what it does

bitter oriole Oct 30, 2018, 2:26 PM

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Feel free to share your findings, I think the inner workings of the multiplayer code are pretty mysterious to most of us

stable arch Oct 30, 2018, 2:59 PM

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can i get some help please for some reason the rotation of the spring arm component is only working client side but not replicated from sever to client , I've check replicate box as well as adding a new spring arm nothing seems to be working right for me any suggestions?

twin juniper Oct 30, 2018, 3:02 PM

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{
    // We want to see if any of the Units or Structures that our PlayerController owns are within the net relevancy distance

    GLog->Log("Number of Units we own: " + FString::FromInt(PC->UnitsWeOwn.Num()));```
This function is never called. Is there a way to create custom network relevancy that is dependent on the location of an actor that we own, instead of just the player controller and default pawn's location? I thought this would be the function. Is this incorrect?

#

I basically am doing a simple check to see if "this" actor, is in an array of actors we own, if it is, we return true.

thorn yarrow Oct 30, 2018, 3:13 PM

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@twin juniper is the actor bOnlyRelevantToOwner == false

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https://docs.unrealengine.com/en-US/Gameplay/Networking/Actors/ReplicationFlow

twin juniper Oct 30, 2018, 3:14 PM

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yes

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@thorn yarrow bReplicates = true; bReplicateMovement = true; bOnlyRelevantToOwner = false;

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This is what i have

thorn yarrow Oct 30, 2018, 3:22 PM

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okay i'm back

#

how are you spawning this actor

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@twin juniper

twin juniper Oct 30, 2018, 3:39 PM

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@thorn yarrow Inside of InitNewPlayer

thorn yarrow Oct 30, 2018, 3:40 PM

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Okay, so only the server has [spawned] it. The owner isn't set to anything?

twin juniper Oct 30, 2018, 3:42 PM

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No

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It has no owener

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the Units have owners though

thorn yarrow Oct 30, 2018, 3:42 PM

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Are you spawning to it next to the player?

twin juniper Oct 30, 2018, 3:42 PM

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Well, the DefaultPawn is just a camera (its an rts game)

#

So I want my AI Units to be controlling relevance. For example, when a unit or structure enters range, I want that actor to become relevant

thorn yarrow Oct 30, 2018, 3:46 PM

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Right, they basically just need to act like any other actor would. Shouldn't have to do anything special to bring them in relevancy except distance.

#

Which is why I asked where you spawned them.

#

I have to open up ue4 rq

#

oh

#

Okay -- not the right direction. One other thing to verify. The AUnit, does it have collision? @twin juniper

twin juniper Oct 30, 2018, 4:06 PM

#

well whats happening

#

yes it does lol

#

whats happening though is that a unit we own is still going out of relevancy, AND it isn't making other structures relevant when that unit enters range.

thorn yarrow Oct 30, 2018, 4:10 PM

#

if you set the structures (other actors presumably) owner to the main unit, it should bring those in with it

#

Do you have visual studio running, and can attach to the editor?

#

also your structures (presumably actors) would need bNetUseOwnerRelevancy set to true

#

so then if the 'main' unit comes into relevancy, all of its followers should.

#

but from what I understand, I am not sure you need to override the relevancy. What I'd do is spawn the AI units like you are, but you want to ensure no owner is being assigned to them. So by default, each unit will be distance checked from the clients viewpoint. Then, if there is any groups of AI, their leader becomes their owner, and they use the owners net relevancy distance check to control their relevancy to the client. You have the player controller send PRCs to the server then to the AI units [on the server] through some AI unit manager which can reference the units the player controller commanded to move because you can't send an RPC through the AI units from the player controllers client of course [the server owns them]. But you can do client side things like showing a UMG widget when selecting them of course.

twin juniper Oct 30, 2018, 4:29 PM

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well there is

#

there is like 50 though

#

well we don't want to have it use the owner's relevancy though @thorn yarrow

#

why would we want that?

#

you ever played league of legends or dota 2? When you are not within a certain range, the other unit literally does not exist

thorn yarrow Oct 30, 2018, 4:32 PM

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I didn't mean that. I'm saying if AI units, work in a group, such as, lets imagine, a Leader of a gang, has 4 other followers with him. For a total of 5 units. The followers would have the Leader of the gang set as its owner.

twin juniper Oct 30, 2018, 4:32 PM

#

yeah

thorn yarrow Oct 30, 2018, 4:32 PM

#

But otherwise, every unit is owned by the server

twin juniper Oct 30, 2018, 4:32 PM

#

is there a way though

#

to likke

#

have each individual unit check relevancy

#

i think by default its based on the default pawn

thorn yarrow Oct 30, 2018, 4:33 PM

#

Yes, its the Player Controller and Pawn which checks against every other actor.

#

for a connection

#

afaik

twin juniper Oct 30, 2018, 4:34 PM

#

📎 XHq8BoR.png

#

So I am overriding this on my AUnit class.

#


    const AInGameDeathAlleyPlayerController* PC = Cast<AInGameDeathAlleyPlayerController>(RealViewer);
    if (PC->UnitsWeOwn.Contains(this))
    {
        return true;
    }
    for (AUnit* MyUnit : PC->UnitsWeOwn)
    {
        if (IsWithinNetRelevancyDistance(MyUnit->GetActorLocation()))
        {
            return true;
        }
    }

    if (IsWithinNetRelevancyDistance(PC->BaseActor->GetActorLocation()))
    {
        return true;
    }

    return Super::IsNetRelevantFor(RealViewer, ViewTarget, SrcLocation);

#

This is what I'm doing essentially. Does this make sense to you?

thorn yarrow Oct 30, 2018, 4:36 PM

#

yes

twin juniper Oct 30, 2018, 4:36 PM

#

It doesn't seem to work though.

thorn yarrow Oct 30, 2018, 4:37 PM

#

but you said its not being called

twin juniper Oct 30, 2018, 4:37 PM

#

From what I can tell, yes.

thorn yarrow Oct 30, 2018, 4:39 PM

#

Have you tried break pointing in there?

twin juniper Oct 30, 2018, 4:40 PM

#

I was going to try that next. I just wanted to verify that this is the correct method to be overriding.

#

Do you know how often network relevancy is checked? Is there some sort of timer?

thorn yarrow Oct 30, 2018, 4:42 PM

#

every second

#

https://api.unrealengine.com/INT/API/Runtime/Engine/GameFramework/AActor/PreReplication/index.html

AActor::PreReplication

Called on the actor right before replication occurs.

#

if you override this too, it'll inform you if its being replicated at all

#

if this doesn't happen, it won't call IsNetRelevantFor

fleet viper Oct 30, 2018, 5:55 PM

#

Hey there got some replication issues here in the images you can see how ive done it. I want to show the marker only to the members of the the team from the player who spotted/spawned the actor. On the client side its good, its replicated however when the host/listen server wants to spawn its not replicated any idea why its like that and how i can fix it?

📎 Desktop_Screenshot_2018.10.30_-_18.43.04.68.png

#

📎 Desktop_Screenshot_2018.10.30_-_18.43.17.79.png

#

📎 Desktop_Screenshot_2018.10.30_-_18.43.27.94.png

winged badger Oct 30, 2018, 6:29 PM

#

if you have any c++ in your project, overriding the AActor::IsNetRelevantFor and just spawning it on server is the simplest way to go

#

Realviewer is the PC, so as long as you have the team ID on controller or pawn, you can compare it with teamID on the Actor, set when its spawned

#

and it wouldn't just be hidden for the other team, it would not exist

twin juniper Oct 30, 2018, 6:31 PM

#

@thorn yarrow How do I use that?

hoary spear Oct 30, 2018, 6:36 PM

#

Am i mistaken to think RepNotify triggers when a clients specific repnotify variable has been updated/replicated ?

#

Atm i'm using a delay node to make sure the variable on the clientside has been properly updated, but I think it could be replaced with a repnotify instead..

twin juniper Oct 30, 2018, 6:38 PM

#

[OnlineSubsystem]
PollingIntervalInMs=20

#

what is that

thorn yarrow Oct 30, 2018, 6:38 PM

#

@twin juniper PreReplication?

twin juniper Oct 30, 2018, 6:38 PM

#

Yeah

thorn yarrow Oct 30, 2018, 6:39 PM

#

you can override it to see if it hits in your AUnit

#

hey @winged badger, any reason IsNetRelevantFor would not be called on an actor? other than dormacy, frequency, or deletion?

winged badger Oct 30, 2018, 7:53 PM

#

not being set to replicate

#

frequency wouldn't affect it

#

nor would any relevancy booleans

twin juniper Oct 30, 2018, 8:02 PM

#

@winged badger How do we RTS-style relevancy

#

So units load in when another unit is in range, but is always relevant to the owner (the player who spawned the unit).

winged badger Oct 30, 2018, 8:03 PM

#

do they all have the PC as owner?

#

are the UnitsWeOwn populated server-side?

twin juniper Oct 30, 2018, 8:03 PM

#

its populated on both

#

its a replicated TArray

winged badger Oct 30, 2018, 8:03 PM

#

how many units are we talking about?

twin juniper Oct 30, 2018, 8:04 PM

#

One for now... I am simply trying to get core functionality working, not working on large numbers yet.