#multiplayer | Unreal Source | Page 435

thin stratus Jan 4, 2019, 7:15 PM

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Hey, we have cookies

severe nymph Jan 4, 2019, 7:16 PM

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yeah its really my fault I haven't invested the time there

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but I guess that's the climb everyone makes as they start to get more serious into UE4

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I'm the retard that decided to go Multiplayer/Sandbox/OpenArea/VR on my first project HAHAHA wtf was I thinking

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https://cdn.discordapp.com/attachments/455477168126951438/494718772293402624/sunrise.PNG

jade gazelle Jan 4, 2019, 7:43 PM

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@thin stratus adding a one second delay before the client RPC solves the null value issue, so I’m obviously calling it too quickly

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Will switch over to repnotify or delay loop

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Thanks for the tip, you as well @severe nymph

severe nymph Jan 4, 2019, 7:46 PM

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yea in this situation that's probably the least costly way.

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just delay a frame

thin stratus Jan 4, 2019, 7:48 PM

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RepNotify is def the way to go then

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You want the Client to do something when the Replicated Component exists on it

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So yeah RepNotify. No need for a loop

jade gazelle Jan 4, 2019, 7:55 PM

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Got it

opaque flicker Jan 4, 2019, 8:16 PM

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hi, whenver i'm trying to set material of an hierarchical Instanced Static Mesh via RepNotify on client(not server) it appears null material (In blueprint) why?

thin stratus Jan 4, 2019, 8:17 PM

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Depends on what exactly you are doing

opaque flicker Jan 4, 2019, 8:21 PM

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I'm using repnotify to set a material of hierarchical Instanced Static Mesh on a specific client, but when i debug with print string, it tells that right name of the material (on client) , but when the shape actually appears it has a null material

thin stratus Jan 4, 2019, 8:22 PM

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at that point you might want to share the code

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Cause by that I have no idea what is wrong

opaque flicker Jan 4, 2019, 8:22 PM

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📎 material_problem.png

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📎 material_problem_2_.png

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this repnotify is owner only

thin stratus Jan 4, 2019, 8:25 PM

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Ah, that's not a problem with your networking

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You didn't check the correct stuff in your Material

opaque flicker Jan 4, 2019, 8:26 PM

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what do u mean with "correct stuff" ?

thin stratus Jan 4, 2019, 8:27 PM

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Sorry, got distracted

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Was actually still writing

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Open up your Material

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Click on the big node that has all the pins on it

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And scroll down on the left side

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You'll find a list with a lot of check boxes

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Search for the one that says something about "Usable with Instance Static Meshes" or so

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@opaque flicker

opaque flicker Jan 4, 2019, 8:29 PM

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i will check and brb to u

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dude u rockkkkkkk

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thank u alot 😃

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that saved me alot of time 😃

icy nacelle Jan 4, 2019, 8:34 PM

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I've got a replication problem with an actor I've got moving along a spline. For some reason the Actor will disappear when its 10000 units away from where the client first spawns.
At first I thought it was a draw distance issue, but this problem only persists when playing as a client. Any idea what the problem might be?

thin stratus Jan 4, 2019, 8:34 PM

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Don't worry. I always forget about that too. Girlfriend reminded me a few days back cause I cried about my Matrial not working :D @opaque flicker ¯_(ツ)_/¯

opaque flicker Jan 4, 2019, 8:34 PM

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xD

thin stratus Jan 4, 2019, 8:34 PM

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@icy nacelle Sounds like relevancy problem?

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Try ticking "AlwaysRelevant" in the actor settings

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And see if that still happens

icy nacelle Jan 4, 2019, 8:35 PM

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Yeah. I figured theres a system in place that says "when actor is x away from player, its not relevant anymore so it doesnt need to replicate"?

thin stratus Jan 4, 2019, 8:35 PM

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Yop

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If you open the Actor and check the replicatio nsettings

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It has a "Distance Squared" for when it stops being relevant

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Usually you don't want to mark actors as always relevant if they aren't really always relevant

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Actors like the PlayerState are always relevant

icy nacelle Jan 4, 2019, 8:36 PM

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Oh brilliant, thats fixed it! Thanks!! I'm currently shooting my trailer and I'm trying to get some nice shots of my train but this bug was stopping me

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This is a train that goes around the entire open world, its quite important for it to always be relevant I guess 😛

worthy wasp Jan 4, 2019, 9:47 PM

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if I had a matchmake service that kicked out an IP for people to connect to (Listen Server setup) - can i pass an arg into the ListenServer client's GameMode to say how many people (and any other additional information) that can be set into the listen server - so it can detect when all the clients have connected?

thin stratus Jan 4, 2019, 10:08 PM

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MaxPlayers

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Is what you can pass

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If you know how many players there will be before the ListenServer hosts

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You can do ?MaxPlayers=4

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or whatever you have

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@worthy wasp

worthy wasp Jan 4, 2019, 10:13 PM

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badass - thanks @thin stratus

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however - i dont see this as a variable in AGameModeBase or AGameMode.... how do i detect this number in the server map startup?

thin stratus Jan 4, 2019, 10:17 PM

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GameSession

worthy wasp Jan 4, 2019, 10:18 PM

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thanks for the clarification bud!

thin stratus Jan 4, 2019, 10:18 PM

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void AGameSession::InitOptions( const FString& Options )
{
    UWorld* const World = GetWorld();
    check(World);
    AGameModeBase* const GameMode = World ? World->GetAuthGameMode() : nullptr;

    MaxPlayers = UGameplayStatics::GetIntOption( Options, TEXT("MaxPlayers"), MaxPlayers );
    MaxSpectators = UGameplayStatics::GetIntOption( Options, TEXT("MaxSpectators"), MaxSpectators );
    
    if (GameMode)
    {
        UClass* PlayerStateClass = GameMode->PlayerStateClass;
        APlayerState const* const DefaultPlayerState = (PlayerStateClass ? GetDefault<APlayerState>(PlayerStateClass) : nullptr);
        if (DefaultPlayerState)
        {
            SessionName = DefaultPlayerState->SessionName;
        }
        else
        {
            UE_LOG(LogGameSession, Error, TEXT("Player State class is invalid for game mode: %s!"), *GameMode->GetName());
        }
    }
}

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https://github.com/EpicGames/UnrealEngine/blob/f7626ddd147fe20a6144b521a26739c863546f4a/Engine/Source/Runtime/Engine/Private/GameSession.cpp#L136

worthy wasp Jan 4, 2019, 10:18 PM

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you are so beautiful - to me!

thin stratus Jan 4, 2019, 10:18 PM

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:P

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DefaultGame.ini can also have

[/Script/Engine.GameSession]
MaxPlayers=16```

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But that's less relevant to your problem i guess

worthy wasp Jan 4, 2019, 10:20 PM

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naw i'm pulling up GameSession API now and going ot work off that - looks to be more beneficial to my agenda

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❤

thin stratus Jan 4, 2019, 10:20 PM

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bool AGameSession::GetSessionJoinability(FName InSessionName, FJoinabilitySettings& OutSettings)
{
    UWorld* const World = GetWorld();
    check(World);

    OutSettings.MaxPlayers = MaxPlayers;
    OutSettings.MaxPartySize = MaxPartySize;
    return UOnlineEngineInterface::Get()->GetSessionJoinability(World, InSessionName, OutSettings);
}

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And this takes care of kicking players if MaxPlayers is reached

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bool AGameSession::AtCapacity(bool bSpectator)
{
    if ( GetNetMode() == NM_Standalone )
    {
        return false;
    }

    AGameModeBase* GameMode = GetWorld()->GetAuthGameMode();

    if ( bSpectator )
    {
        return ( (GameMode->GetNumSpectators() >= MaxSpectators)
        && ((GetNetMode() != NM_ListenServer) || (GameMode->GetNumPlayers() > 0)) );
    }
    else
    {
        const int32 MaxPlayersToUse = CVarMaxPlayersOverride.GetValueOnGameThread() > 0 ? CVarMaxPlayersOverride.GetValueOnGameThread() : MaxPlayers;

        return ( (MaxPlayersToUse>0) && (GameMode->GetNumPlayers() >= MaxPlayersToUse) );
    }
}

worthy wasp Jan 4, 2019, 10:21 PM

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hot damn

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me likes

thin stratus Jan 4, 2019, 10:21 PM

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FString AGameSession::ApproveLogin(const FString& Options)
{
    UWorld* const World = GetWorld();
    check(World);

    AGameModeBase* const GameMode = World->GetAuthGameMode();
    check(GameMode);

    int32 SpectatorOnly = 0;
    SpectatorOnly = UGameplayStatics::GetIntOption(Options, TEXT("SpectatorOnly"), SpectatorOnly);

    if (AtCapacity(SpectatorOnly == 1))
    {
        return TEXT( "Server full." );
    }

    int32 SplitscreenCount = 0;
    SplitscreenCount = UGameplayStatics::GetIntOption(Options, TEXT("SplitscreenCount"), SplitscreenCount);

    if (SplitscreenCount > MaxSplitscreensPerConnection)
    {
        UE_LOG(LogGameSession, Warning, TEXT("ApproveLogin: A maximum of %i splitscreen players are allowed"), MaxSplitscreensPerConnection);
        return TEXT("Maximum splitscreen players");
    }

    return TEXT("");
}

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In the middle

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PreLogin calls that

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In AGameModeBase

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There you have the full cycle, enjoy :P

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Login also calls that a second time

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https://github.com/EpicGames/UnrealEngine/blob/b70f31f6645d764bcb55829228918a6e3b571e0b/Engine/Source/Runtime/Engine/Private/GameModeBase.cpp#L643

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@worthy wasp

worthy wasp Jan 4, 2019, 10:25 PM

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🍆

fleet viper Jan 4, 2019, 11:19 PM

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so i've got a very bizarre error here and this happens only on client side https://cdn.discordapp.com/attachments/221799385611239424/530463784242905099/Desktop_Screenshot_2019.01.03_-_20.03.59.89.png
https://cdn.discordapp.com/attachments/221799385611239424/530463785916301383/Desktop_Screenshot_2019.01.03_-_20.05.23.10.png
and how can a location of an actor be 0 if he is somewhere else?

thin stratus Jan 4, 2019, 11:21 PM

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Well you are getting AccessedNone errors

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That's not bizarre

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You are accessing a null pointer

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An empty reference

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@fleet viper

fleet viper Jan 4, 2019, 11:22 PM

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yes but how is this only happening as a client and not as the server?

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@thin stratus

thin stratus Jan 4, 2019, 11:22 PM

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Actor you are passing isn't replicated

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Is usually one of the reasons

fleet viper Jan 4, 2019, 11:22 PM

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lemme check that quick

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you mean the default replicates check box under replication right? if yes then the actor is replicated

thin stratus Jan 4, 2019, 11:30 PM

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Well where are you getting that causer actor from?

fleet viper Jan 4, 2019, 11:35 PM

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from a take damage event which holds the values already in it

📎 Desktop_Screenshot_2019.01.05_-_00.34.29.86.png

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📎 Desktop_Screenshot_2019.01.05_-_00.34.37.45.png

fleet viper Jan 5, 2019, 12:22 AM

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@thin stratus

keen thorn Jan 5, 2019, 12:37 AM

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where does the damage event broadcast occur? Usually all dmg events should only run on server.

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clients should only do cosmetic stuff

lost inlet Jan 5, 2019, 12:56 AM

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so here's an odd thing, the NetDriver doesn't seem to keep hold of any of the stats it updates, resetting them all to 0 at the end of the block in TickFlush. it seemed like UT used NetDriver->In/OutPacketsLost to display the packet loss %

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but because of this reset, it's always 0

agile lotus Jan 5, 2019, 1:36 AM

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is there anyway to detect which playercontroller is host from the gamemode

jagged garden Jan 5, 2019, 1:53 AM

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getplayercontroller should do it

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with id 0

keen thorn Jan 5, 2019, 2:05 AM

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@agile lotus thats kinda funny cus gamemode only exist on the server. So the playercontroller that have IsLocalController to be true should be the one

agile lotus Jan 5, 2019, 2:09 AM

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fantastic

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tyty

worthy wasp Jan 5, 2019, 4:28 AM

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am I to take this as a return out variable for the ErrorMessage in AGamemodeBase::PreLogin() ?

void AGG_GameMode::PreLogin(const FString & Options, const FString & Address, const FUniqueNetIdRepl & UniqueId, FString & ErrorMessage)

https://api.unrealengine.com/INT/API/Runtime/Engine/GameFramework/AGameModeBase/PreLogin/1/index.html

AGameModeBase::PreLogin

Accept or reject a player attempting to join the server.

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if so - what is the target? There is no pointer to the playercontroller attempting PreLogin()

sharp pagoda Jan 5, 2019, 5:34 AM

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Not sure what you're asking, but you use the ErrorMessage as a response to the client. If the string isn't empty, it will boot the connection attempt. A PC doesn't exist at PreLogin(), the soonest it's available is at Login() @worthy wasp

worthy wasp Jan 5, 2019, 5:40 AM

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i guess what i'm asking @sharp pagoda is how is this error message then handled? Do I call PreLogin manually somehow - and error check on GameSession->MaxPlayers? Or is this automatically done in GameSession via code - GetSessionJoinability() or perhaps AtCapacity() which Cedric says is done via PreLogin as well Login methods in GameModeBase?

sharp pagoda Jan 5, 2019, 5:41 AM

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The ErrorMessage is returned to the client, which can be used to inform the client as to why their connection was refused

worthy wasp Jan 5, 2019, 5:41 AM

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i was looking to give an error message to the attempted client - but i'm thinking ic an do that on JoinSession->Failure() delegate?

sharp pagoda Jan 5, 2019, 5:41 AM

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Don't call PreLogin manually

worthy wasp Jan 5, 2019, 5:41 AM

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how do i define this error message then?

sharp pagoda Jan 5, 2019, 5:41 AM

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It's a reference, you just assign it?

worthy wasp Jan 5, 2019, 5:42 AM

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udnerstood - so it IS INDEED an out parameter to the function?

sharp pagoda Jan 5, 2019, 5:42 AM

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Yes

worthy wasp Jan 5, 2019, 5:42 AM

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thanks - makes sense!

sharp pagoda Jan 5, 2019, 5:42 AM

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Typically non-const reference parameters are used as output

worthy wasp Jan 5, 2019, 5:42 AM

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i figuerd as much - i just wanted to clarify - all of these functs are new to me using in this project i'm putting together

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thanks again!

dull yoke Jan 5, 2019, 7:49 AM

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This is more of a design question, but is client camera should be on the server then replicated back to the owning client or can it just be pure client-side that server should be unaware of? And any advantages/disadvantages to this?

edgy galleon Jan 5, 2019, 8:13 AM

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client side, why does the server need to know about the camera

dull yoke Jan 5, 2019, 8:21 AM

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Thanks @edgy galleon , that's actually what I'm wondering. Google searches always shows people asking how to properly sync server/client camera.

edgy galleon Jan 5, 2019, 8:22 AM

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well if you want other players to see your look direction or something you could pass along the rotator but other than that I don't see why you'd need to

past bear Jan 5, 2019, 8:29 AM

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Anti-cheat measures, preventing players from modifying their camera client side

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Pretty standard stuff, otherwise clients can look through walls, around corners etc that they shouldn't be able to

dull yoke Jan 5, 2019, 8:47 AM

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@past bear I think looking through walls is more than a camera issue. Any hack can just easily remove walls or make other players visible by making a skeleton outline, etc... That's why other game developers choose to external agent apps that detects processes that tries to read your game's memory values. Its very intrusive to players but it solves the problem without incurring overhead on the network bandwidth.

thin stratus Jan 5, 2019, 9:47 AM

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You should properly setup relevancy so that actors behind walls aren't replicating anymore. Then you also can't wallhack cause even without walls there is nothing to actually look at.

worthy perch Jan 5, 2019, 9:51 AM

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Hello eXi, I didn't know that was possible. What property is that called?

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@thin stratus

thin stratus Jan 5, 2019, 10:03 AM

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It is cpp only. Function you can look into is "IsNetRelevantFor"

worthy perch Jan 5, 2019, 10:03 AM

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Awesome, had no idea that existed. Thanks.

keen thorn Jan 5, 2019, 2:32 PM

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Anyone know why when I attach an actor A to a component B using AttachToComponent on server, on clients they will be attached fine but the actor position would slightly change every time? I'm attaching to a bone socket of a skeletal mesh, attachment rule is to keep world position. On standalone or listenserver it looks fine (no slight movement at all)

meager spade Jan 5, 2019, 3:06 PM

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dedicated server might not be rendering the skeleton pose

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well it wont render it by default, dedicated server will keep the pose as T or A (no animation)

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you need to either refresh the mesh and some hackery before attaching to socket or have it always update on the server

keen thorn Jan 5, 2019, 3:52 PM

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@meager spade the skeletal is set to always update, the whole thing works, but theres just a slight translation

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I guess i gotta make my own attachment code to fix this

hoary lark Jan 5, 2019, 4:57 PM

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Any particular reason why you're using keep world position? Is this something like, being shot by an arrow and making the arrow stick into the player?

robust wind Jan 5, 2019, 6:00 PM

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Hey folks I got a question,

In my Multiplayer Game when I use server travel to get to the game map from the lobby everything works fine.

Now that I want to go back from game to the lobby map it only works when the server is playing solo as soon as there is a player connected it crashes

Even though everything is setted up the Same way as to move from lobby to the game

winged badger Jan 5, 2019, 6:38 PM

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It can crash for literally hundreds of different reasons. Output log at the time of the crash? CallStack?

past totem Jan 5, 2019, 6:47 PM

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Best way to remove an instance of a static mesh component in multiplayer? (For server & clients)

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📎 unknown.png

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tried this but it bugs out sometimes

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ping me please

jagged garden Jan 5, 2019, 7:23 PM

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@past totem instances arent replicated. you have to make sure they are added and removed in the same way on all clients/server

past totem Jan 5, 2019, 7:24 PM

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@jagged garden how would I do that?

jagged garden Jan 5, 2019, 7:24 PM

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if you wanted to add an instance you would have to multicast like you have for the remove instance

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and you always need a target

past totem Jan 5, 2019, 7:25 PM

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wdym

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I'm not trying to add

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I'm trying to remove

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that's a foliage instance

jagged garden Jan 5, 2019, 7:26 PM

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are the foliage instances created statically?

past totem Jan 5, 2019, 7:26 PM

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they are created with the landscape foliage editor thing

jagged garden Jan 5, 2019, 7:26 PM

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hmmm

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Im not sure why it wouldnt work. How does it bug out?

past totem Jan 5, 2019, 7:27 PM

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doesnt destroy for client, destroys for server

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so when I walk on it it bugs me out like it's not there but I can still see it

jagged garden Jan 5, 2019, 7:29 PM

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I wonder if the indexes aren't the same on client and server

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try doing a rep notify instead of a multicast

past totem Jan 5, 2019, 7:29 PM

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📎 unknown.png

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well fixed it by running the trace thing on the client

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I guess item id is diff

jagged garden Jan 5, 2019, 7:32 PM

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yeah
sorry when I said rep notify I meant updating when the server foliage changes but that wouldnt work

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I did something just like this but I dont remeber having problems

twin juniper Jan 5, 2019, 9:42 PM

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Does anyone know how to setup p2p networking so that players don't have to port forward?

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listen server without port forwarding

thin stratus Jan 5, 2019, 9:43 PM

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UE4 doesn't support P2P

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What you mean is the NAT PunchThrough

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If you use Steam for example it does that by itself

twin juniper Jan 5, 2019, 9:44 PM

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How does that work?

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Are there any tutorials for this online?

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I have project setup for dedicated server, but want add p2p listen servers

thin stratus Jan 5, 2019, 9:51 PM

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P2P and ListenServer are two different things

twin juniper Jan 5, 2019, 9:54 PM

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Really?

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What is what I want?

thin stratus Jan 5, 2019, 9:55 PM

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ListenServers that don't have to open ports are done through NAT PunchThrough

twin juniper Jan 5, 2019, 9:56 PM

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Okay so what I want is a ListenServer that uses NAT PunchThrough?

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How do I implement this? Steam? Does steam have tutorial?

thin stratus Jan 5, 2019, 9:57 PM

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Steam does that for you

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But as implied, you HAVE to use Steam then

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I have never implemented NETPT by myself, so can't help you there

twin juniper Jan 5, 2019, 9:58 PM

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How does that work? Does steam have a way to just join a "nat punch server" which has good ping?

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oh

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Do you know anyone who has?

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@thin stratus Sir, is this it? https://partner.steamgames.com/doc/features/multiplayer/networking

robust wind Jan 5, 2019, 10:54 PM

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Hey quick question I have the advanced sessions plugin installed and now want to create a LAN sessions works fine if steam is turned off but as soon as steam is enabled it fails, how can I switch the online subsystem that should be used during runtime if that is even possible?

covert ember Jan 5, 2019, 11:43 PM

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I have an issue as well, during the compiling stage for packaging it says Steam API disabled, what do I need to do to fix this, any help is greatly appreciated, I have been stuck on this for a very long time. -Airsoft117

worthy perch Jan 6, 2019, 12:02 AM

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Airsoft, if I had to guess, and my understanding of how to properly use Steamworks is limited, you're probably calling some SteamAPI function before checking SteamAPI_Init.

lost inlet Jan 6, 2019, 12:37 AM

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that's a message you can ignore in the cooker

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the cooker is just a cmdlet, which will load project plugins

jagged garden Jan 6, 2019, 2:18 AM

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^

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it should still work

worthy wasp Jan 6, 2019, 4:55 AM

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I'm drawing a blank here - I have a STATICALLY placed actor in my level - and the BeginPlay is only running on CLIENTS - and not the ListenServer in PIE testing.... Setting the actor to bReplicates.True does nothing different... it shouldnt even need this.

I thought BeginPlay runs as both Server and Client - but my listen server isnt seeing any events i'm doing in BeginPlay (which is also some delegate binding to GameState) - i shouldnt have to Multicast this event shoudl I?

{
    Super::BeginPlay();
    GEngine->AddOnScreenDebugMessage(-1, 10.f, FColor::Green, FString::Printf(TEXT("%s: HOLE MGR - HELLO"), NETMODE_WORLD));
}```

worthy perch Jan 6, 2019, 6:18 AM

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BeginPlay does run on both server and client in pretty much all situations. What do you mean by ListenServer in PIE? Like checking "Running as Dedicated Server" or just having two clients run where one is the authority?

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Because in the case with two clients, the authority client will act as the server and a client.

keen thorn Jan 6, 2019, 6:48 AM

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BeginPlay should run everywhere regardless

worthy wasp Jan 6, 2019, 7:27 AM

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thats a grand notion & all - but it simply doesnt happen in PIE testing for LISTEN server setup:

https://puu.sh/Csph2/7f41ee29ef.png

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i solved it by doing an iterator of actors + running event on this actor - its a manager class... takign over ownership of the rules of the match i'm doing.

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its weird - it runs fine on NetClients - but not on the ListenServer client - print stringing BeginPlay() only prints out to NetClients - never to the ListenServer client.

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this maybe just a PIE problem - i'll debug this with Standalone testing later

worthy perch Jan 6, 2019, 8:07 AM

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It wouldn't be surprising if it was a PIE problem. Dedicated Server stuff in PIE has problems too. Though, this case in particular is a bit weird.

keen thorn Jan 6, 2019, 8:07 AM

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does this happen with empty project?

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cus ive never had this issue

worthy perch Jan 6, 2019, 8:10 AM

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Oh, huh, I also have this problem I just tested in my current project.

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On 4.19.2.

keen thorn Jan 6, 2019, 8:21 AM

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let me test quickly on my project, but im on 4.20 tho

worthy perch Jan 6, 2019, 8:30 AM

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Just curious, do you plan to stay on 4.20?

keen thorn Jan 6, 2019, 8:35 AM

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no i don't, I will update when i feel the need for new features in later builds and also if those are stable enough

worthy perch Jan 6, 2019, 8:35 AM

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Alright, I only asked because personally, I chose to skip 4.20 because of this issue: https://issues.unrealengine.com/issue/UE-62345.

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Hopefully 4.21 is good. I do want to switch off 4.19.

keen thorn Jan 6, 2019, 8:40 AM

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Hm, havent encountered this issue yet, but its fixed for 4.21

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maybe i need to update if i encounter same issue

keen thorn Jan 6, 2019, 9:09 AM

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ok i tested @worthy wasp 's issue and its not an issue for me, i can see the msg fine on listen server

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but this may be because i use 4.20

hardy dome Jan 6, 2019, 11:06 AM

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Hey, bros! How can I change the transform of a client-owned pawn from a server-owned pawn?

I've got 2 different pawns: server-owned pawn(sPawn) and a client-owned pawn(cPawn). I need to change the transform of a cPawn by pressing a button on a sPawn.

What I do is on the sPawn I look for all cPawns and let the server change their transforms. See BPs pic attached.

However, while on the sPawn side I see cPawn changed transform to near me, cPawn player stays on the same transform as before(nothing happens to him).

Why is that? I change cPawn's transform on the server and I thought it should work, but it doesn't.

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📎 1.jpg

keen thorn Jan 6, 2019, 11:11 AM

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have u enabled replicate movement on the cPawns?

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this will let the server replicate translation/rotation

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otherwise the server wont do this by default

hardy dome Jan 6, 2019, 11:13 AM

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Just a sec, let me check

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📎 unknown.png

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Yep, character movement component is set to replictaes

keen thorn Jan 6, 2019, 11:16 AM

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no not the movement component

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the actor/pawn itself

hardy dome Jan 6, 2019, 11:17 AM

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Where is it?

keen thorn Jan 6, 2019, 11:17 AM

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the movement component doesnt need to be set to replicate since its inside the actor already

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its the main property window of ur pwn

hardy dome Jan 6, 2019, 11:18 AM

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📎 unknown.png

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Seems like it replicates also

keen thorn Jan 6, 2019, 11:18 AM

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is this for ur pawn or for ur component

hardy dome Jan 6, 2019, 11:18 AM

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this is for the pawn

keen thorn Jan 6, 2019, 11:18 AM

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for pawn

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then its weird indeed

hardy dome Jan 6, 2019, 11:19 AM

#

i'm using 4.18 if it tells you smth

keen thorn Jan 6, 2019, 11:20 AM

#

i cant see the blueprint graph above clearly so not sure what happens there

#

are u using multicast to replicate or simply setting the transform?

hardy dome Jan 6, 2019, 11:21 AM

#

Omg, thanks for telling me that, smth strange happend to the screenshot

#

📎 1.jpg

#

hm, looks like discord downgrades it

keen thorn Jan 6, 2019, 11:22 AM

#

ye

#

https://blueprintue.com/

BlueprintUE

PasteBin blueprints For Unreal Engine 4

BlueprintUE.com is a tool for sharing, rendering and rating blueprints for Unreal Engine 4. UE4 is a game engine which use visual scripting called blueprint.

#

use this

#

u can copy ur bp and paste there

hardy dome Jan 6, 2019, 11:23 AM

#

https://pp.userapi.com/c850736/v850736725/837cd/cK6xt0N1zB8.jpg

#

Use the link 😄

keen thorn Jan 6, 2019, 11:24 AM

#

oh i see ur RPC

#

its set to run on server

#

📎 unknown.png

#

u see this part, what it does is it will call server function, so here it will again call the function on server

#

nothing gets transferred to clients

#

u gotta use multicast if u wanna replicate using RPC to clients

#

but since movement is replicated, u can just simply set the cPawn transform from cPawn

#

from sPawn

#

and it should automatically replicate to clients

hardy dome Jan 6, 2019, 11:29 AM

#

So if I got it right I need just change these two functions on cPawn from "Run on server" to "Multicast"?

keen thorn Jan 6, 2019, 11:31 AM

#

what happens on the MotionController event is u eventually try to call an RPC on the cPawn, but this RPC is set to only be called if u own the pawns

#

the server does not own these cPawns (not controlling them)

#

and these RPC are set to be called on server from owning clients as well

#

what u need is a multicast RPC

#

this way it will be called on all clients + server

hardy dome Jan 6, 2019, 11:34 AM

#

📎 unknown.png

#

Like that?

keen thorn Jan 6, 2019, 11:34 AM

#

yes looks right

hardy dome Jan 6, 2019, 11:35 AM

#

📎 unknown.png

#

Better view 😄

keen thorn Jan 6, 2019, 11:35 AM

#

ye

#

then u call that as before from the server

#

oh wait let me think, what are u trying to achieve

#

u want a pawn from a client's action to be shown on all other clients via the server?

hardy dome Jan 6, 2019, 11:37 AM

#

No, I want a clients pawn to teleport near the server pawn location

#

By the push of a button from the server pawn

keen thorn Jan 6, 2019, 11:38 AM

#

oh ok...

#

then u dont need any RPC

#

u can simply make it a normal event

#

like a function call

#

and change the transform

#

make sure the cPawn have replicate movement to true

hardy dome Jan 6, 2019, 11:39 AM

#

it is

keen thorn Jan 6, 2019, 11:39 AM

#

the function calls above are RPCs

#

can u try use normal function calls?

#

or simply set the transforms

#

in the for each loop

#

directly

#

and see what happens

hardy dome Jan 6, 2019, 11:43 AM

#

Well, I can do that, but I doubt it will work, because how will the server know that cPawns transform has changed?

keen thorn Jan 6, 2019, 11:46 AM

#

because u are calling it on the server (as u said=

#

)

#

the motioncontroller even is done on the server right?

#

that means everything that follows is known on the server

#

unless I am misunderstanding something...

hardy dome Jan 6, 2019, 11:49 AM

#

Yes, I'm calling it on the server owned pawn, so does it mean these functions are called by the server(even if set to "not replicated")?

keen thorn Jan 6, 2019, 11:50 AM

#

if u call it from the server then everything that follows is guaranteed to run on the server

#

replicated or not

#

by server owning pawn, do u mean a pawn owned and controlled by a listenserver instance right?

hardy dome Jan 6, 2019, 11:52 AM

#

I'm a bit confused, sorry. So, does this mean that if the server owns sPawn than every fuction that fires on the sPawn is fired by the server? Like these motion controller events?

keen thorn Jan 6, 2019, 11:52 AM

#

MotionController yes

hardy dome Jan 6, 2019, 11:53 AM

#

"by server owning pawn, do u mean a pawn owned and controlled by a listenserver instance right?" - right

keen thorn Jan 6, 2019, 11:53 AM

#

because external input is always connected to the instance that has this input connected, if this instance happens to be a server then it will run there

#

but if the motioncontroller happens on another machine, then it wont happen on the server sPawn (obvious cus sPawn is not owned by the other machine)

#

"I'm a bit confused, sorry. So, does this mean that if the server owns sPawn than every fuction that fires on the sPawn is fired by the server? Like these motion controller events?" Yes if motioncontroller fires on server, and server owns sPawn, then everything that follows run on the server

hardy dome Jan 6, 2019, 11:55 AM

#

Lol I thought I have to set at least "run on server" even if the pawn is already owned by server

keen thorn Jan 6, 2019, 11:55 AM

#

no u dont

#

😛

#

a server is like any other machine, it only has a special ability which is to send data to other machines

#

other machines have 1 special ability is to send data to server if an RPC is called within their owning pawn/controller

#

note here no machines (except for server) can send any data between themselves

#

in clase u use dedicated server then ur logic need to be different though

#

cus then everything thats visible will not be the server

hardy dome Jan 6, 2019, 11:58 AM

#

I'm using direct ip just in case

keen thorn Jan 6, 2019, 11:59 AM

#

in ur case now u do need a multicast RPC, to do the fading and stuff

#

but for the transform u dont need

hardy dome Jan 6, 2019, 12:00 PM

#

do i need to set actor transform right in the sPawn after the foreachloop?

keen thorn Jan 6, 2019, 12:00 PM

#

yes

#

u can set it in the cPawn as well as a normal function call

#

but all the fading and stuff wont happen on client unless u tell the clients so with RPC

#

only the transform will work

hardy dome Jan 6, 2019, 12:02 PM

#

ok. I'll try that! thanks for the detailed explanation 😉 networking is so confusing lol

keen thorn Jan 6, 2019, 12:02 PM

#

ye it confuses everything

#

everyone

#

😄

#

im also making a VR multiplayer game

#

but i dont have the VR gear here to test 😢

hardy dome Jan 6, 2019, 12:07 PM

#

Hm, messaged you

twin juniper Jan 6, 2019, 5:02 PM

#

Listen server collision seems to break!

#

Fall through the world occasionally

twin juniper Jan 6, 2019, 6:39 PM

#

Listen server collision broken

meager spade Jan 6, 2019, 6:40 PM

#

im sure the collision is not broken

#

more you are spawning or moving a static actor

#

which causes collisions to fail

twin juniper Jan 6, 2019, 6:41 PM

#

no!

#

Everything that works in single player works fine

#

by when we add ?listen

#

and connect other players, the collision is broke

#

falling through map

#

Could it be because I have bEnableClientSideLevelStreamingVolumes in WorldSettings?

#

Perhaps the levels aren't being loaded on the listen server?

timid pendant Jan 6, 2019, 9:33 PM

#

Hi how would I use the command line in jenkins to build a linux server. It compiles and builds the editor fine for windows but for linux it is not working. "C:\UnrealEngine-release\Engine\Build\BatchFiles\RunUAT.bat" BuildCookRun -project="MyProjectDir" -noP4 -platform=Linux
-clientconfig=Development -serverconfig=Development -cook -server -serverplatform=Linux -noclient -NoCompile -stage -pak -archive -archivedirectory="ArchiveDir"

regal hazel Jan 7, 2019, 12:46 AM

#

replace -NoCompile with -compile @timid pendant

timid pendant Jan 7, 2019, 12:46 AM

#

Okay thank you

twin juniper Jan 7, 2019, 1:06 AM

#

Listen server collision is broken

plush wave Jan 7, 2019, 1:06 AM

#

how do I detect if I'm connected to a dedicated server

#

I know "IsDedicatedServer" checks to see if you are a dedicated server

#

But I want to know if I'm connected to one

worthy perch Jan 7, 2019, 1:18 AM

#

@plush wave Perhaps something like this: https://answers.unrealengine.com/questions/795554/how-to-get-server-ip-after-connection-to-session-o.html

plush wave Jan 7, 2019, 1:19 AM

#

Thanks for the link! Not sure if that will let me differentiate between a host (peer) and a dedicated server, but I will dive into this and see if it will provide me with that data.

worthy perch Jan 7, 2019, 1:33 AM

#

I took a quick look at UNetConnection and I don't think it has any information about listen server/dedicated server. You could just get that information through RPCs.

meager spade Jan 7, 2019, 3:26 AM

#

@twin juniper stop keep spamming saying Listen Server collision is broken. its pointless and you won't get any help. Your implying that the engine is broken. 3 times you said that now, and you have not clearly said what is wrong, showing video of it happening etc. So please just stop saying "Listen server collision is broken".

misty stirrup Jan 7, 2019, 6:40 AM

#

does anyone have a breakdown on how Character Movement Component replicates?

thin stratus Jan 7, 2019, 6:44 AM

#

@misty stirrup Don't think there is one written down.

#

But it's rather simple. It does all the stuff in the TickComponent function

#

It checks who is calling it (Server, Local Client, Other Clients)

#

And executes a function based on that.

#

Server Moves, Other Clients Simulate and Local Client Moves + Tells the Server to Move.

#

When performing a move, the Client saves that Move in an Array with Timestamp etc.
When the Server performs the move, it checks the end location (post move) with the end location the client send.
If that differs too much, it will cause the Client to be adjusted.
I think at that point it will simply clean up the moves array and force the client to the proper location.
If not adjusted, the Server will move the Client, the Client will, at some point later in time, retrieve the data about the move, and use the Array to retrace the steps + applying the move the server gave.

#

In a perfect world, that would always all result on the same location etc.

#

For more you'll have to actually look into the files.

misty stirrup Jan 7, 2019, 6:48 AM

#

thank u

twin juniper Jan 7, 2019, 10:44 AM

#

@meager spade but it not work

thin stratus Jan 7, 2019, 10:44 AM

#

Which is most likely your own fault

twin juniper Jan 7, 2019, 10:53 AM

#

why work in single play, dedicated, but not ?listen

#

partial collision work, not all areas

thin stratus Jan 7, 2019, 10:53 AM

#

Cause you probably didn't set it up for all cases

twin juniper Jan 7, 2019, 10:53 AM

#

collision is block all

thin stratus Jan 7, 2019, 10:54 AM

#

What are you even trying to walk* on?

twin juniper Jan 7, 2019, 10:54 AM

#

landscape

#

ground

#

rock

#

correct?

thin stratus Jan 7, 2019, 10:56 AM

#

And when exactly does it fail?

#

You were talking about LevelStreaming

#

Are you using Level Streaming?

twin juniper Jan 7, 2019, 11:04 AM

#

I turn level streaming off

#

It is random, some places are good, others aren't

#

some, you fall, some you don't

#

completely random

#

some rock work, some rock dont

#

some ground work, some ground no work

bitter oriole Jan 7, 2019, 11:06 AM

#

How exactly are you playin with listen server ? Because play-in-editor, for example, typically causes very low framerates that might affect physics.

#

As in if you play in a secondary viewport as a client while the editor window does listen server.

twin juniper Jan 7, 2019, 11:09 AM

#

i have button that call
" open mymap?listen"

#

then friend in sweden connect

#

everything work except collision

#

Make sense?

#

is bad?

#

I go now. Be back later.

twin juniper Jan 7, 2019, 11:43 AM

#

@bitter oriole @thin stratus You may find helpful, I think I find problem. It look like World Composition not load all tiles on listen server, only tiles loaded near server owner. So tile with other player not load properly, mean no collision. Make sense?

#

I not know how to force load yet though

#

https://forums.unrealengine.com/development-discussion/content-creation/54670-multiplayer-and-world-composition

Unreal Engine Forums

Talk about Level Design, Static Meshes, Physics, and more.

#

Need load all tile

#

I will tell when I find

serene cloud Jan 7, 2019, 11:53 AM

#

https://gyazo.com/1e59b0b433758624e3c4a25a04af3e2c.gif guys i was working on a fan game where i made a opponent and a player to make things easier i made a child mesh and made the opponent as the mesh of the child mesh but the thing is sprint and all stuff work fine but when i jump or crouch (when i press the key) the other player starts doing it too here take a look

#

please help

robust wind Jan 7, 2019, 12:03 PM

#

Could you show use the code of the jump?

serene cloud Jan 7, 2019, 12:04 PM

#

yeah sure one sec

#

📎 unknown.png

thin stratus Jan 7, 2019, 12:08 PM

#

Strange

#

That should already be properly routed through the CMC

robust wind Jan 7, 2019, 12:08 PM

#

Hmmh in the video do you mean by other player the opponent or the other mesh?

thin stratus Jan 7, 2019, 12:09 PM

#

It seems like the mesh is reacting to it

#

Not the actual jumping

serene cloud Jan 7, 2019, 12:09 PM

#

yeah

thin stratus Jan 7, 2019, 12:09 PM

#

So I assume this is a problem in the AnimBP

#

You are probably using GetPlayerCharacter0

#

Or so

serene cloud Jan 7, 2019, 12:09 PM

#

actually yeah im in animbp

#

my bad

#

try get pawn owner?

thin stratus Jan 7, 2019, 12:10 PM

#

Yeah, that refers to the pawn itself, rather than always the character 0

serene cloud Jan 7, 2019, 12:24 PM

#

https://gyazo.com/25409e5c64215fb0297b0a1d74872137.gif whenever i climb the window the camera of the second player switches to first player and after climbing it switches back to first player plus the first player is not able to climb he climbs and then gets back to where he started from climbing.

thin stratus Jan 7, 2019, 12:24 PM

#

You should really double check your code for all these "GetXXXXX0" calls

serene cloud Jan 7, 2019, 12:24 PM

#

probably in the window bp there is get player character

thin stratus Jan 7, 2019, 12:25 PM

#

It's a singleplayer game by default iirc

#

So you have to deal with these things

serene cloud Jan 7, 2019, 12:25 PM

#

trying to make it multiplayer xd

thin stratus Jan 7, 2019, 12:25 PM

#

Yeah they didn't have to care about which player they were referring to

#

So you have to go over most of their code and check

serene cloud Jan 7, 2019, 12:26 PM

#

i mean

#

its a fan game

#

i started all over again

#

made it with my code

thin stratus Jan 7, 2019, 12:26 PM

#

Well then you gotta learn Multiplayer coding a bit more :D

serene cloud Jan 7, 2019, 12:26 PM

#

this is the whole bp

📎 unknown.png

#

wait is it possible that i can assign player index to a child mesh of the same palyer?

thin stratus Jan 7, 2019, 12:27 PM

#

No, doubt

#

Also clean up that blueprint pls :D

serene cloud Jan 7, 2019, 12:27 PM

#

yea

soft relic Jan 7, 2019, 12:40 PM

#

📎 unknown.png

#

why is the object spawning only when the server pressed the build object button?

#

Any help would be really appreciated!

worthy perch Jan 7, 2019, 12:49 PM

#

Is the object set to replicate?

soft relic Jan 7, 2019, 12:51 PM

#

"Replicates" is set on the object spawning in this case

#

client can build too

#

but server wont see it

worthy perch Jan 7, 2019, 12:53 PM

#

If you spawn something on the client, the server won't see it.

#

But, uh, looking at that picture, I don't think that's the problem. I don't really know why you would have the server call a client RPC that calls a server RPC.

soft relic Jan 7, 2019, 12:56 PM

#

what I want is to get both build objects

#

should i changethe first server call to a normal function?

worthy perch Jan 7, 2019, 12:58 PM

#

Sorry, I don't fully understand. But typically the client calls a server RPC and then the server spawns the object, which if it replicates, replicates to clients.

soft relic Jan 7, 2019, 12:59 PM

#

What I want is clients press a button to build the object

#

and I want it to replicate

#

isnt it the correct way setup already?

#

📎 unknown.png

#

changed the first call now

worthy perch Jan 7, 2019, 1:00 PM

#

Yes, that looks good.

soft relic Jan 7, 2019, 1:01 PM

#

it wont replicate to server though

#

still

worthy perch Jan 7, 2019, 1:02 PM

#

Oh, I think only things with autonomous role can call server RPCs.

#

If the RPC is being called from client to be executed on the server, the client must own the Actor that the RPC is being called on.

soft relic Jan 7, 2019, 1:04 PM

#

so how would I fix the problem in this case?

#

this is a building controller actor

#

spawned locally for each client

worthy perch Jan 7, 2019, 1:04 PM

#

You probably just need to call that RPC from either your player controller, player state, or possessed pawn.

soft relic Jan 7, 2019, 1:06 PM

#

Could the problem be because the actor calling the server function is not existing on other clients and server?

worthy perch Jan 7, 2019, 1:06 PM

#

Oh, it's spawned locally for each client. Yeah, that won't be able to call or receive any RPCs.

soft relic Jan 7, 2019, 1:07 PM

#

hm

#

will have to find another way then

worthy perch Jan 7, 2019, 1:08 PM

#

https://docs.unrealengine.com/en-us/Gameplay/Networking/Actors/RPCs

Take a look at the Requiresments and Caveats section.

soft relic Jan 7, 2019, 1:11 PM

#

got it

#

now just have to find a way to do it as the buildingcontroller actor is locally spawned, and this is going to be a marketplace product so i cant really use pcs

twin juniper Jan 7, 2019, 1:31 PM

#

@thin stratus Thank you for your advisement.

unique thunder Jan 7, 2019, 3:07 PM

#

If I spawn an actor via server RPC and then feed the return value into a multicast event (actor input), why might the reference break in the multicast?

#

Null error

thin stratus Jan 7, 2019, 3:17 PM

#

Cause the RPC is faster than the actual replication command to spawn the actor

#

@unique thunder

#

Feed the ReturnValue into a RepNotify variable

unique thunder Jan 7, 2019, 3:19 PM

#

@thin stratus Would it be a bad idea to run attachment logic via repnotify?

thin stratus Jan 7, 2019, 3:19 PM

#

No

#

I do the same thing

unique thunder Jan 7, 2019, 3:19 PM

#

Great, thank you

twin juniper Jan 7, 2019, 3:41 PM

#

Is there a way to send a message to players when the listen server disconnects?

#

I want to let players know what happened so they don't think game is broken

worthy wasp Jan 7, 2019, 3:49 PM

#

@twin juniper - Event::NetworkError or Event::TravelError (Both in GameInstance)

https://puu.sh/Ct246/b056966462.png

twin juniper Jan 7, 2019, 3:50 PM

#

Does this get passed back on the main menu?

#

Or is this only between travel

worthy wasp Jan 7, 2019, 3:52 PM

#

main menu is irrelevant & singular to your project (as there is no main menu class)

#

this is a native event that happens via Network Protocols in UE4 Network topology

#

this fires when theres either a NetworkError delegate or NetworkTravel delegate

keen thorn Jan 7, 2019, 4:03 PM

#

Anyone here tried SpatialOS?

twin juniper Jan 7, 2019, 4:12 PM

#

If I call IsNetMode(NM_ListenServer) on a player who is hosting a ?listen map will this return true?

#

Or are they a Client of their own listen server?

thin stratus Jan 7, 2019, 4:30 PM

#

It returns true

#

They are client and server at once

robust wind Jan 7, 2019, 4:33 PM

#

Hey dear community I have a question I'm developing a game for multiplayer at the moment with both steam and LAN support,
But I'm occurring some critical problems.
The main one is that even though everything works fine when playing over LAN when steam is disabled, as soon as steam is enabled and I'm testing over internet it stops working, first thing that stops is seamless travel, the second thing is that the player sometimes gets stuck after some actions just like it doesn't set values over the steam connection,
All of these things work when playing with steam disabled and over LAN though, as already mentioned, anybody has any idea why that could be?

thin stratus Jan 7, 2019, 4:34 PM

#

SeamlessTravel stops?

#

Wat?

robust wind Jan 7, 2019, 4:34 PM

#

Yes

twin juniper Jan 7, 2019, 4:35 PM

#

cedric_eXi, so they will return true on listen server client

robust wind Jan 7, 2019, 4:35 PM

#

It gets stuck in loading the server is on the ne map but the Client is still stuck in loading

#

But only over the steam connection

thin stratus Jan 7, 2019, 4:35 PM

#

What do you mean with Steam Connection?

robust wind Jan 7, 2019, 4:36 PM

#

I'm using the advanced sessions plugin

thin stratus Jan 7, 2019, 4:36 PM

#

I mean, technically the only thing steam provides is the Session Data and mapping you to the Server via the ID

robust wind Jan 7, 2019, 4:36 PM

#

When testing with steam as online subsystem

thin stratus Jan 7, 2019, 4:36 PM

#

SeamlessTravel is required so that hte Client doesn't get disconnected between map changes

robust wind Jan 7, 2019, 4:36 PM

#

It stops working

#

When steam is disabled(turned off) the online subsystem null gets used as far as I undrstood what I read so far

#

And there it works (over LAN

#

Yeah I setted up. Seamless travel the way I researched, having a lobby map and a game map. Where the game modea seamless travel is turned off and only on the transition maps game mode is it turned on and the transition map. Is setted in the project settings

thin stratus Jan 7, 2019, 4:41 PM

#

no

robust wind Jan 7, 2019, 4:41 PM

#

Otherwise I can't return from game to lobby if either of the game or lobbys seamless travel. Is turned on

thin stratus Jan 7, 2019, 4:41 PM

#

They all have to have SeamlessTravel on

#

All maps that support ServerTraveling

robust wind Jan 7, 2019, 4:41 PM

#

Then it crashes

thin stratus Jan 7, 2019, 4:41 PM

#

So basically only the MainMenu one does not

robust wind Jan 7, 2019, 4:41 PM

#

Yeah I tried that but then the game crashes when I perform the server travel back from game to lobby

#

But lobby to game works

#

Even though both events are setted up exactly the Same

thin stratus Jan 7, 2019, 4:51 PM

#

Well, that's your codes problem then

#

Check what the crash log says

worthy wasp Jan 7, 2019, 4:51 PM

#

i'm having issues with a ProjectileMovementComponent actor - that i'm activating @ runtime (a golf ball). Before i started doing networking - i was setting up all the settings (velocity, runtime activation) in PIE testing (no listen server). I moved to ListenServer model - i have all the events working the way i need them as far as spawning the ball, ownership etc.... but i cannot get teh Projectile physics to work now in ListenServer.

I can print string the velocity, which is the same velocity it was using before i moved to MP networking.... but when i activate the component it just falls to the ground.

What am I missing here? I can take this same static mesh component (the root of this actor) and SImulatePhysics... applyForce and it works fine in MPlayer.....

robust wind Jan 7, 2019, 4:53 PM

#

@thin stratus that's what the crash window says

📎 JPEG_20190107_175329.jpg

thin stratus Jan 7, 2019, 4:54 PM

#

Install debug symbols...

twin juniper Jan 7, 2019, 4:54 PM

#

@robust wind please install a screenshot tool

thin stratus Jan 7, 2019, 4:54 PM

#

You actively unchecked the box when isntalling your engine

#

Go to your engine version in the launcher

#

And check the settings of that version

#

or options or whatever its called

robust wind Jan 7, 2019, 4:54 PM

#

Okay I will try that thanks

thin stratus Jan 7, 2019, 4:54 PM

#

and isntall the symboles

sly kernel Jan 7, 2019, 4:55 PM

#

is it possible to have multiplayer without Steam ?

#

(using stock launcher version of UE 4.21.x)

fleet raven Jan 7, 2019, 5:11 PM

#

of course it is

bitter oriole Jan 7, 2019, 5:27 PM

#

It actually defaults to that

sly kernel Jan 7, 2019, 5:53 PM

#

I see, thanks

sly kernel Jan 7, 2019, 6:45 PM

#

are old Epic tutorials about Blueprint MP game still relevant to 4.21.x ?

sweet atlas Jan 7, 2019, 7:13 PM

#

is there a free alternative to something like steamworks for multiplayer? i mean, i dont want players to have to mess with NAT stuff and IP adresses. need some way for players to just find all the open games.

bitter oriole Jan 7, 2019, 7:35 PM

#

You need a central server for that, with your own service that every game connect to, to tell it that there's a server, or a client looking for one

#

Steam's the cheapest option

#

100$ lifetime vs what, $10 a month

sly kernel Jan 7, 2019, 7:35 PM

#

what about listen server ?

bitter oriole Jan 7, 2019, 7:35 PM

#

Listen server doesn't provide matchmaking

sly kernel Jan 7, 2019, 7:36 PM

#

but do they provide NAT punching and server list ?

bitter oriole Jan 7, 2019, 7:36 PM

#

No

#

It's completely unrelated

#

Server listing is matchmaking, you need a central server

#

NAT punch can be done through some free/oss libraries so it's just a matter of client implementation

sly kernel Jan 7, 2019, 7:38 PM

#

what if I want to have one person running game as listen server and 3 others connecting to it? Would clients have to type in IP address of the listen server (and whoever runs server has to configure port forwarding beforehand and provide clients with IP address) ? Still talking about stock UE4 without any 3rd party services

bitter oriole Jan 7, 2019, 7:39 PM

#

Yes

#

You'll need the IP

#

Port forwarding might not be required if you implement NAT punch

#

Server lists vs NAT vs listen server are three mostly unrelated topics

sly kernel Jan 7, 2019, 7:41 PM

#

I see

#

I thought 4.21.x has NAT punch functionality readily available

bitter oriole Jan 7, 2019, 7:41 PM

#

Maybe

#

Still need a server for listings

sly kernel Jan 7, 2019, 7:42 PM

#

maybe I should just start off with split screen multiplayer 🤔

sweet atlas Jan 7, 2019, 7:51 PM

#

hm, i think ill just go with steam for now then. iirc you can test it without having your game on steam.

bitter oriole Jan 7, 2019, 8:19 PM

#

@sly kernel I mean, it's entirely up to what you're doing here

#

If you're doing an online MP game, Steam is a great choice for PC

#

Split screen MP is completely different, and not exactly all the rage these days

sly kernel Jan 7, 2019, 8:20 PM

#

I am going for consoles

twin juniper Jan 7, 2019, 8:20 PM

#

How do I disable world composition for listen servers?

#

https://forums.unrealengine.com/development-discussion/content-creation/54670-multiplayer-and-world-composition

Unreal Engine Forums

Talk about Level Design, Static Meshes, Physics, and more.

#

World composition is not ok for listen servers

#

because it unloads tiles

sly kernel Jan 7, 2019, 8:21 PM

#

and since I am not into C++, I don't want to deal with anything that will be too complicated. From what I understand split screen MP is nowhere near as complex as online MP.

dense citrus Jan 7, 2019, 8:23 PM

#

Hey @ all , i have issue with ue4 4.21 network. If i play my game online over steam , it lags totally somtimes the characters even move. Pings about 20. If i do it on local all works fine and smooth. Any idea?

bitter oriole Jan 7, 2019, 8:32 PM

#

@sly kernel Split screen is just very different, but sure, much less complicated

#

Though UE4 has shit support for it AFAIK

sly kernel Jan 7, 2019, 8:32 PM

#

😦

#

what's wrong with split screen in UE4 @bitter oriole ?

bitter oriole Jan 7, 2019, 8:43 PM

#

I'm not sure it really exists in a solid way, simply put

#

I mean sure you can do split screen out of the box

#

But it's not the best experience in most games

#

For example, 2D games work best with something called a voronoi split

#

There's an asset on the store though : https://www.unrealengine.com/marketplace/voronoi-split-screen

Voronoi Split Screen by Matt Woelk in Blueprints - UE4 Marketplace

A dynamic split screen system that elegantly merges when players are close together.

#

Looking at the description, it sucks

#

Basically expect some work on the viewport

#

Still less than regular online MP

sly kernel Jan 7, 2019, 8:59 PM

#

I see

keen thorn Jan 7, 2019, 9:09 PM

#

@bitter oriole u can make ur own splitscreen in ue4 quite easy with render to texture

bitter oriole Jan 7, 2019, 9:09 PM

#

And the render cost will be through the roof

#

With an additional frame of lag

fleet raven Jan 7, 2019, 9:10 PM

#

that's a pretty br_big_brain way of making split screen

bitter oriole Jan 7, 2019, 9:11 PM

#

Now Voronoi is definitely not easy to optimize in a generalist engine

#

In your own engine you'd easily be able to tweak the viewports

#

Render to texture is the simplest, worst approach

twin juniper Jan 7, 2019, 9:14 PM

#

how do disable world composition on listen server

#

it break collision for other player

#

it not work

bitter oriole Jan 7, 2019, 9:16 PM

#

Don't use world composition, use a static level instead

keen thorn Jan 7, 2019, 9:25 PM

#

@bitter oriole 1 frame lag in 30fps = 1/30 = 0.033s = 33ms (dont think this is an insane big issue for games that need this). And the rendering cost isn't that much more. Surely for a custom engine it would solve this very well, but then thats all it will do is to solve certain problems very well and leave u with a bunch of other problems that eat production time

bitter oriole Jan 7, 2019, 9:25 PM

#

The rendering cost is 2X the base cost

#

If you're doing voronoi with RTT

#

That's huge

#

And 33ms is a far cry from zero

keen thorn Jan 7, 2019, 9:26 PM

#

not if it works and can sell for the needed cash, surely it is not the best

bitter oriole Jan 7, 2019, 9:27 PM

#

If you want the lazy way, just use the built in split with a post process to add a small border on top

#

Much better performance, zero lag

#

RTT is lazy and shit performance

keen thorn Jan 7, 2019, 9:28 PM

#

it cant do voronois

#

voronoi

#

im actually using RTT for split screen right now

bitter oriole Jan 7, 2019, 9:29 PM

#

It can't indeed, but if you're in the business of shitty games...

keen thorn Jan 7, 2019, 9:29 PM

#

up to u, but it sells for my daily bread, what works works

#

like nobody is really compressing sprites these days to save performance anymore, people just use entire sprites of stuff they need. Because production cost always outweights the tiny performance benefits these days, 60fps or 200fps, no one really care

bitter oriole Jan 7, 2019, 9:32 PM

#

UE4 compresses textures anyway so...

keen thorn Jan 7, 2019, 9:32 PM

#

its not about compression, its how they encoded the sprites

#

and cut them up to recombine

bitter oriole Jan 7, 2019, 9:33 PM

#

That's not relevant anymore

keen thorn Jan 7, 2019, 9:33 PM

#

exactly

#

it surely optimize performance

bitter oriole Jan 7, 2019, 9:33 PM

#

No, it doesn't

keen thorn Jan 7, 2019, 9:33 PM

#

yes it does thats why they did it

bitter oriole Jan 7, 2019, 9:33 PM

#

It doesn't anymore

#

Not on a PC or a PS4

keen thorn Jan 7, 2019, 9:33 PM

#

exactly

bitter oriole Jan 7, 2019, 9:33 PM

#

Your RTT approach kills the framerate

#

It halves it

#

That's nothing comparable

keen thorn Jan 7, 2019, 9:34 PM

#

like from 200fps to 100fps?

#

dont think its a big issue

bitter oriole Jan 7, 2019, 9:34 PM

#

On a PS4 it's probably more like 30 to 15

#

And I haven't seen much hardware that renders a blank UE scene at 200fps

keen thorn Jan 7, 2019, 9:35 PM

#

i see

bitter oriole Jan 7, 2019, 9:35 PM

#

But sure, if you don't have any time and still need voronoi, RTT it is

#

Just saying this is engine-switching stuff for serious people

keen thorn Jan 7, 2019, 9:36 PM

#

Square Enix just dumped their Luminous Engine for UE4 in making of Kingdom Hearts 3

#

they had to relearn everything from tutorials

bitter oriole Jan 7, 2019, 9:37 PM

#

I know someone did it with UE4 so clearly it can be done well - playing with engine internals obviously

keen thorn Jan 7, 2019, 9:37 PM

#

yes I think serious people will mod the engine

#

I would do the same if performance becomes a huge issue

bitter oriole Jan 7, 2019, 9:38 PM

#

Then again, plenty of 2D games can work without it. Super Mario doesn't have split screen for example, despite being a typical use case for voronoi

keen thorn Jan 7, 2019, 9:38 PM

#

yes u can make games without split screen for sure

twin juniper Jan 7, 2019, 10:05 PM

#

@bitter oriole it broke

bitter oriole Jan 7, 2019, 10:06 PM

#

What ?

twin juniper Jan 7, 2019, 10:15 PM

#

anyone have a workaround to TMap replication ?

fleet raven Jan 7, 2019, 10:18 PM

#

do it manually

twin juniper Jan 7, 2019, 10:20 PM

#

WELL ITS NOT GOOD WORKAROUND IS JUST MESS

#

THIS IS THE CLEANEST IMPLEMENTATION OF TMAP REPLICATION IVE SEEN YET

fossil spoke Jan 7, 2019, 10:20 PM

#

No need to yell

#

lol

fleet raven Jan 7, 2019, 10:20 PM

#

a map is far too generic structure to replicate automatically

#

correct way to do it depends 100% on use case

severe widget Jan 7, 2019, 10:42 PM

#

Until we can do nested containers as value types in TMultiMaps over the network, they may as well not bother.

jolly siren Jan 7, 2019, 11:24 PM

#

Is there anyway to not replicate an actor to late joiners?

#

I know how to do it for a specific property
DOREPLIFETIME_ACTIVE_OVERRIDE(AFPSCharacter, LastTakeHitInfo, GetWorld() && GetWorld()->GetTimeSeconds() < LastTakeHitTimeTimeout);

#

But I'm not sure how to do it for AFPSCharacter itself

worthy wasp Jan 8, 2019, 12:11 AM

#

I'm having issues with a ProjectileMovementComponent actor - that i'm activating @ runtime (a golf ball). Before i started doing networking - i was setting up all the settings (velocity, runtime activation) in PIE testing (no listen server). I moved to ListenServer model - i have all the events working the way i need them as far as spawning the ball, ownership etc.... but i cannot get teh Projectile physics to work now in ListenServer.

I can print string the velocity, which is the same velocity it was using before i moved to MP networking.... but when i activate the component it just falls to the ground.

What am I missing here? I can take this same static mesh component (the root of this actor) and SImulatePhysics... applyForce and it works fine in MPlayer.....

#

the reason i don tuse AddForce() is because it isnt hte same physics as the projectile - which i'm using SuggestProjectileVelocity_CustomArc() because i need it to land nearest to my calculated distance....

cedar finch Jan 8, 2019, 12:55 AM

#

Oh it might be because I spawn it inside a repnotify

jade gazelle Jan 8, 2019, 2:52 AM

#

If I have an Actor Component owned by my player controller, and I call Destroy Component on the server, is it automatically destroyed in the client as well or do I need to manually call the destroy action for the client?

cedar finch Jan 8, 2019, 7:36 AM

#

Can somebody help me figure out why when I destroy an actor only the server see's it destroy? Clients still see the actor. 😦 I'm destroying the actor using a run on server RPC

fossil spoke Jan 8, 2019, 7:37 AM

#

Is the Actor set to Replicate?

cedar finch Jan 8, 2019, 7:39 AM

#

I clicked the class defaults and checked the replicate box

#

It's just a weapon pickup bluprint. It works correctly if I place it in my level but if I spawn it in then clients cant see it be destroyed. You wanna see my blueprints? I have the screenshots.

#

This sets the weapon info: https://i.gyazo.com/929dc65487cfbcbb622f8ae08f91c312.png

#

https://i.gyazo.com/2d204e6c43cd0d661406b63b925f39f7.png

#

Then this is where you pickup the weapon: https://i.gyazo.com/08ca55e662f5e38eceb35d98f40538f2.png

#

https://i.gyazo.com/44dbcbd2fac5e2f008fd72c4794e6c25.png

#

Then it gets destroyed: https://i.gyazo.com/b3ede0bba0db30a786c8cea032f314d4.png

#

https://i.gyazo.com/0ae0ddbc45cfef591fcffa836e7b3d7c.gif

#

Server is on the left, Client on the right. See how it doesn't destroy? That is when I spawn the weapon. But look at this gif below where I place the same weapon into the level manually, it works then: https://i.gyazo.com/458f24e1b725d4f6b01ee5c7b66291d8.gif

#

What is the difference between spawning it and placing it in the world? I spawn it inside a repnotify does that matter?

#

https://i.gyazo.com/e13be749e4c548685dbf769ccb9ae934.png

#

https://i.gyazo.com/fb41d56c039602138de4c9cbd07032a8.png

#

https://i.gyazo.com/8ea5db78517c3fba8b17b6977b0e8fc9.png

thin stratus Jan 8, 2019, 8:01 AM

#

@jolly siren IsNetRelevantFor?

prime axle Jan 8, 2019, 9:14 AM

#

Quick question - I overrid the GetDefaultPawnClassForController function inside a custom GameMode with a log to know when I enter it.
I log into my server with a string of options to spawn with (different class, different guns and abilities)
When 1 guy enters my server this function gets called 3 times? I don't understand why it fires 3 times? Anyone know?

prime axle Jan 8, 2019, 9:42 AM

#

📎 unknown.png

#

Which causes issues like this one.
Red is the Log line from within my Custom InitNewPlayer (this is called when the player first joins with it's options)
The subsequent first GetDefaultPawnClassForController call reads the login data and reads properly that we want to log in as a LIGHT Class
but any subsequent GetDefaultPawnClassForController then returns a none and we end spawning as a none (which right now default to a non-functioning basic class)
SO any idea why this GetDefaultPawnClassForController is being called 3 times?
I also log the amount of players that are on my server and it's only 1; so it's not like there are 3 controller on my server either.
Im dumbfounded....

dense citrus Jan 8, 2019, 10:06 AM

#

Who can help me to show only team member names overhead ? I created a widget with all informations ,also in my playerstate i have a team var all is working so far but can´t filter it out .

📎 maxresdefault_2.jpg

#

in my character i´m using a 3d widget component

night jay Jan 8, 2019, 4:25 PM

#

Does your playerstate have any way to indicate which player belongs to what team?

#

Like how do you differentiate between friend or foe?

bleak lily Jan 8, 2019, 9:07 PM

#

quick question I am trying to replicate spawn sound attached since it doesnt replicate the sound

#

how do I make the sound replicate for clients

#

I did an rpc

thin stratus Jan 8, 2019, 9:08 PM

#

Well if we assume that you are on the Server when whatever happens that should add the sound, using a Multicast to spawn the component would solve this

bleak lily Jan 8, 2019, 9:08 PM

#

oh multicast

thin stratus Jan 8, 2019, 9:13 PM

#

Gotta look into SpatialOS for UE4 at some point, just for fun to see how good that integrates

worthy wasp Jan 8, 2019, 9:17 PM

#

@thin stratus - me and a team were presented with this in about Aug of 2017 and at the time we were offered a free pass to SpatialOS as long as we help develop it.... we passed because of its state at teh time - it was a Unity produced tool that was tryign to make an edge into UE4 technologies.... and the documentation was less than that of UE4's wiki library - as well its functionality wasnt even stable for some of the VERY NECESSARY functionalities that you would normally do for online gaming - things that are A-TYPICAL of services like Photon, Gamesparks or Playfab.

#

all of its CORE COMPONENTS that related to the SpatialOS layer stack - werent even fully developed yet for UE4 API - either SDK or Blueprint.

#

so when you really wanted to utilize what SpatialOS was about - it was unable to do so in UE4 engine.

#

now mind you - this is already 1.5 years old.... so alot COULD have happened within that timegap

thin stratus Jan 8, 2019, 9:20 PM

#

Afaik, they acutally did a lot for UE4 by now

#

You can use it for free in a small testing environment and if you host locally (which is all I need to test) and apparently you can "simply" work with the UE4 replicating and everything works

#

Pretty sure this improved by now

#

And if not, well then not. It's just to see what else is possible. Can never know enough for clients. :D

worthy wasp Jan 8, 2019, 9:34 PM

#

but when we first approached it - we were HIGHLY anticipated by its talked abotu features & achievements.....

#

if it pulls off what it says its able to.... MMORPG for UE4 has never gotten better ❤

normal girder Jan 8, 2019, 9:35 PM

#

hello

#

i try to do multuplayer

#

but i v got a behavior i don t understand

worthy wasp Jan 8, 2019, 9:35 PM

#

my wife has that problem

#

i dont understand it either....

normal girder Jan 8, 2019, 9:35 PM

#

i made spawn 2 pawn with there contrler

#

@worthy wasp ^^

#

me too

worthy wasp Jan 8, 2019, 9:36 PM

#

lol keep going bud

#

controllers...

normal girder Jan 8, 2019, 9:36 PM

#

but when i put for exemple, a print string in tick or begin play

#

nothing appear

#

(sorry if my english is not good)

worthy wasp Jan 8, 2019, 9:36 PM

#

ok i'm experiencing similar effects

#

first....

#

what MODE are you playtesting in?

#

Dedicated Server, ListenServer?

#

i have this very EXACT issue with my LISTEN SERVER not doing tick/begin play print strings... only on the LISTEN SERVER... the client behaves fine

normal girder Jan 8, 2019, 9:37 PM

#

listen server

#

in fact

worthy wasp Jan 8, 2019, 9:37 PM

#

yep!

normal girder Jan 8, 2019, 9:37 PM

#

i try with 2 plyer param

worthy wasp Jan 8, 2019, 9:37 PM

#

@thin stratus hate to bug you directly - can you put some ears on this?

normal girder Jan 8, 2019, 9:37 PM

#

and launch

#

in editpr

worthy wasp Jan 8, 2019, 9:38 PM

#

been bugging me the past few days too.....

winged badger Jan 8, 2019, 9:38 PM

#

pawn is not possessed on beginplay on server

normal girder Jan 8, 2019, 9:38 PM

#

(for you know i m beginer in multiplayer)

worthy wasp Jan 8, 2019, 9:38 PM

#

but @winged badger - TICK is behaving the same way....

#

i have this very same behavior

#

i print string a tick - with some variables i'm trying to watch for

#

my listen server never runs it.....

normal girder Jan 8, 2019, 9:39 PM

#

i spawn like this

📎 unknown.png

#

copy past of template UE4

worthy wasp Jan 8, 2019, 9:39 PM

#

@normal girder - i do notice one problem....

#

your not parameterizing the LPLAYER INDEX

#

so anything here will ALWAYS have index of 0 in that variable

#

just pointing it out....

normal girder Jan 8, 2019, 9:40 PM

#

no, this index come from me

worthy wasp Jan 8, 2019, 9:40 PM

#

i know its not a default of that function.

normal girder Jan 8, 2019, 9:40 PM

#

it s a param i had by myself

worthy wasp Jan 8, 2019, 9:40 PM

#

just noticing - thats all

normal girder Jan 8, 2019, 9:40 PM

#

oki

worthy wasp Jan 8, 2019, 9:40 PM

#

i'm unsure as to why the LISTEN SERVER wont do these functs.... Tick especially

normal girder Jan 8, 2019, 9:40 PM

#

in fact, for serveur this index have a value, not for client

worthy wasp Jan 8, 2019, 9:41 PM

#

seems that it should work just fine - as the listen server IS also a client.....

normal girder Jan 8, 2019, 9:41 PM

#

so you think it s not normal that print string don t print on tick and begin ?

winged badger Jan 8, 2019, 9:41 PM

#

actor not existing server side is the only thing that comes to mind

normal girder Jan 8, 2019, 9:41 PM

#

@winged badger so behavior is normal ?

winged badger Jan 8, 2019, 9:42 PM

#

far from it

worthy wasp Jan 8, 2019, 9:42 PM

#

but if the actor is spawned FROM SERVER - how is this possible?

normal girder Jan 8, 2019, 9:42 PM

#

sorry but my english is not as good for know if you say yes or no ^^

worthy wasp Jan 8, 2019, 9:42 PM

#

i'm print strinign POSSESSED event override on my server

#

AND IT FIRES

winged badger Jan 8, 2019, 9:42 PM

#

missing Super::Tick would do the trick

#

also

normal girder Jan 8, 2019, 9:42 PM

#

haa ok

thin stratus Jan 8, 2019, 9:42 PM

#

Same as missing Super::BeginPlay

worthy wasp Jan 8, 2019, 9:43 PM

#

not possible (because i put it in there....)

#

no

normal girder Jan 8, 2019, 9:43 PM

#

but it possible whith BP to do a Super()

worthy wasp Jan 8, 2019, 9:43 PM

#

its there

sharp pagoda Jan 8, 2019, 9:43 PM

#

Not having the super call throws an assertion

winged badger Jan 8, 2019, 9:43 PM

#

BP BeginPlay is ReceiveBeginPlay

thin stratus Jan 8, 2019, 9:43 PM

#

For BPs it shouldn't matter. As long as you aren't inheriting and overriding it in a child BP

winged badger Jan 8, 2019, 9:43 PM

#

a BlueprintImplementableEvent

normal girder Jan 8, 2019, 9:43 PM

#

ha ? oki

winged badger Jan 8, 2019, 9:43 PM

#

that displays as BeginPlay

#

since what version @sharp pagoda ?

worthy wasp Jan 8, 2019, 9:44 PM

#

https://puu.sh/CtG6y/1c5bece889.png

#

you can see here in my C++ code - Super::Tick/BeginPlay is there

sharp pagoda Jan 8, 2019, 9:45 PM

#

No idea, but I recall missing a super::beginplay() (or tick? Can't remember) on accident and received an exception

worthy wasp Jan 8, 2019, 9:45 PM

#

these functions DO NOT HAPPEN on ListenServer

winged badger Jan 8, 2019, 9:45 PM

#

there is only one way BeginPlay never happens

worthy wasp Jan 8, 2019, 9:45 PM

#

and @sharp pagoda - i never have experienced an exception for NOT including Super::BeginPlay()/Tick()

winged badger Jan 8, 2019, 9:45 PM

#

on server

worthy wasp Jan 8, 2019, 9:46 PM

#

#AllEars

sharp pagoda Jan 8, 2019, 9:46 PM

#

Strange, I'd have to test it when I get home later.

winged badger Jan 8, 2019, 9:46 PM

#

i did see it once, when messing with switch version that was using later then 4,18 im still on

worthy wasp Jan 8, 2019, 9:46 PM

#

my code project currently is 4.21

winged badger Jan 8, 2019, 9:46 PM

#

BeginPlay is end of Actor construction

worthy wasp Jan 8, 2019, 9:47 PM

#

i can assure you that BeginPlay() HAPPENS BEFORE APawn::Possessed()

winged badger Jan 8, 2019, 9:47 PM

#

if it spawned, it gets called

worthy wasp Jan 8, 2019, 9:47 PM

#

so....

#

dont count on BeginPlay to work for shit you need in MP

#

but on the other hand....

#

Tick() - this is a problem

normal girder Jan 8, 2019, 9:47 PM

#

@winged badger im with BP, and my actos spawn, i see there in editor, but i nothing hapen on Begin and on tick

worthy wasp Jan 8, 2019, 9:48 PM

#

@normal girder - try to override APawn::Possessed()

normal girder Jan 8, 2019, 9:48 PM

#

oki

winged badger Jan 8, 2019, 9:48 PM

#

its possible to fuck up BeginPlay on clients iirc

worthy wasp Jan 8, 2019, 9:48 PM

#

in blueprints its in the FUNCITONS->Overrides

#

but this still doesnt solve TICK

normal girder Jan 8, 2019, 9:48 PM

#

yes i kwno i try noow

worthy wasp Jan 8, 2019, 9:48 PM

#

clients - NO PROB
ListenServer - FML ❤

sharp pagoda Jan 8, 2019, 9:48 PM

#

I joined in a little late, what is your issue with tick? Some print string isn't printing?

winged badger Jan 8, 2019, 9:48 PM

#

by forgetting Super::GetLifetimeReplicatedProps in GameState derived class

#

and a breakpoint in beginplay @worthy wasp ?

#

or Tick

normal girder Jan 8, 2019, 9:50 PM

#

@sharp pagoda yes

#

but for me in BP

#

i spawn to Pawn with there controller

#

and Begin ¨Play and Tick dont print string

worthy wasp Jan 8, 2019, 9:50 PM

#

@winged badger https://puu.sh/CtGhT/2b63ebaa3e.png

sharp pagoda Jan 8, 2019, 9:51 PM

#

Where are you spawning the pawn from, can you show that code?

normal girder Jan 8, 2019, 9:51 PM

#

i m on BP

#

and from the GameMode

#

i see this mean to do in template UE

thin stratus Jan 8, 2019, 9:51 PM

#

I never had such an issue

normal girder Jan 8, 2019, 9:51 PM

#

with the Two cowboy

thin stratus Jan 8, 2019, 9:51 PM

#

Can't help. Can only guess either engine bug or doing something wrong

normal girder Jan 8, 2019, 9:51 PM

#

i can do a little vid for example

#

yes a friend said me that isn t possible. he say that tick must be play

#

that why i come here

winged badger Jan 8, 2019, 9:53 PM

#

engine bug that makes tick not run on listen server is more then a little unlikely to pass QA

normal girder Jan 8, 2019, 9:54 PM

#

i just made a little vids

#

but remeber i m really beginner

#

so maybe i m on the wrong...

thin stratus Jan 8, 2019, 9:54 PM

#

pretty sure you are doing something wrong

normal girder Jan 8, 2019, 9:55 PM

#

me too 😄

#

but as someone say he have same problème i ask me if i m on wrong or not

thin stratus Jan 8, 2019, 9:55 PM

#

In a fresh project. If you create a custom pawn or character class.

#

And you spawn that in the GameMode on PostLogin

normal girder Jan 8, 2019, 9:56 PM

#

https://youtu.be/nZOj73A3nOc

YouTube

Karl Gimer

2019 01 08 22 54 51

▶ Play video

thin stratus Jan 8, 2019, 9:56 PM

#

And put a printstring into the BeginPlay and tick

#

It should print

normal girder Jan 8, 2019, 9:56 PM

#

yes i will try

thin stratus Jan 8, 2019, 9:56 PM

#

What are your GameMode and GameState parent classes?

worthy wasp Jan 8, 2019, 9:56 PM

#

@winged badger - "engine bug that makes tick not run on listen server is more then a little unlikely to pass QA"

I wholeheartedly agree - so how am I doing somethign wrong?

thin stratus Jan 8, 2019, 9:56 PM

#

What are your GameMode and GameState parent classes?

normal girder Jan 8, 2019, 9:56 PM

#

the game mode is a personal gamemode

winged badger Jan 8, 2019, 9:56 PM

#

got a custom parent for that class that is missing Super:: ?

worthy wasp Jan 8, 2019, 9:56 PM

#

GameMode & GameState (NOT BASE)

#

no custom parent - direct inherit: ACharacter

thin stratus Jan 8, 2019, 9:57 PM

#

If you can recreate this in a fresh project

worthy wasp Jan 8, 2019, 9:57 PM

#

sorry

normal girder Jan 8, 2019, 9:57 PM

#

gamemode parent are gamemodebase

thin stratus Jan 8, 2019, 9:57 PM

#

Like is just explained

worthy wasp Jan 8, 2019, 9:57 PM

#

APAWN

thin stratus Jan 8, 2019, 9:57 PM

#

I'm gonna beleave you

worthy wasp Jan 8, 2019, 9:57 PM

#

i mean - this was made in a fresh project from like 1 week ago

#

but i'll remake a fresh project to prove myself wrong i hope

normal girder Jan 8, 2019, 9:57 PM

#

@thin stratus i ll try now in fresh prjetc

winged badger Jan 8, 2019, 9:57 PM

#

put breakpoints

normal girder Jan 8, 2019, 9:57 PM

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i ll say you

winged badger Jan 8, 2019, 9:58 PM

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at this point the most likely point of failure is printing the string itself

normal girder Jan 8, 2019, 9:58 PM

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in my case when i put breakpoint, that don t stop

thin stratus Jan 8, 2019, 9:58 PM

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Also, don't use GameModeBase and GameStateBase mixed up with GameMode or GameState

winged badger Jan 8, 2019, 9:58 PM

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see if they hit

normal girder Jan 8, 2019, 9:58 PM

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@thin stratus me ?

thin stratus Jan 8, 2019, 9:58 PM

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Everyone

worthy wasp Jan 8, 2019, 9:58 PM

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@thin stratus though it doesnt crash engine - you DO get a warning in Output log

normal girder Jan 8, 2019, 9:58 PM

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ok

worthy wasp Jan 8, 2019, 9:58 PM

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however - it will still PIE test ... with this mixup you speak

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i learned that hte other day

normal girder Jan 8, 2019, 9:59 PM

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but, i don t think i mix it ? i must do someting else to juste put my gamemode in setting ?

winged badger Jan 8, 2019, 9:59 PM

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in theory, you could had destroyed the actor before it completed construction

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it would throw an ensure (not on 4,18, but would on 4.20, its newish)

sharp pagoda Jan 8, 2019, 10:00 PM

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BeginPlay isn't dispatched in the same frame as the construction?

winged badger Jan 8, 2019, 10:00 PM

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it is unless you destroy it

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sets bHasBeginPlay to false

worthy wasp Jan 8, 2019, 10:00 PM

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BeginPlay happens before event::Possessed()

winged badger Jan 8, 2019, 10:00 PM

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then weird things happen

worthy wasp Jan 8, 2019, 10:00 PM

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so any logic that is MP that you EXPECT to happen when you spawn the character....

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isnt reliable in BeginPlay()

thin stratus Jan 8, 2019, 10:01 PM

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It is

winged badger Jan 8, 2019, 10:01 PM

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no, thats what OnRep_Controller is for

thin stratus Jan 8, 2019, 10:01 PM

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I never had an issue with BeginPlay not calling

winged badger Jan 8, 2019, 10:01 PM

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if you need something related to it

thin stratus Jan 8, 2019, 10:01 PM

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It's 99% a user error

worthy wasp Jan 8, 2019, 10:01 PM

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i wish i knew how i'm erroring (i'm not fighting you....)

normal girder Jan 8, 2019, 10:01 PM

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@thin stratus you saw my video ?

winged badger Jan 8, 2019, 10:01 PM

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@worthy wasp put breakpoints in

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run with debugger

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see if they hit

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most reliable way to tell

sharp pagoda Jan 8, 2019, 10:02 PM

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Or even just walk with the debugger from the point of construction

winged badger Jan 8, 2019, 10:03 PM

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or if you are lazy to run debugger add the following to your c++ Tick and BeginPlay: check(false);

worthy wasp Jan 8, 2019, 10:04 PM

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i'm not lazy - i'll break point the begin play and tick events

normal girder Jan 8, 2019, 10:05 PM

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@thin stratus maybe i did t do correct, but fresh projet

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create personal GameMode

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add it on setting

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create custom pawn

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do this :

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📎 unknown.png

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in editor i put 2 player

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i have two screen aprear

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my Custom pawn spawn

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but tick is not playing

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📎 unknown.png

winged badger Jan 8, 2019, 10:07 PM

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@worthy wasp if you hit a breakpoint and it still doesn't print

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i'd be interested to know what UObject flags it has

normal girder Jan 8, 2019, 10:08 PM

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sorry i miss posses

worthy wasp Jan 8, 2019, 10:08 PM

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i cant get to it right now - but i will tonight for sure

thin stratus Jan 8, 2019, 10:10 PM

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What engine Version is that?

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@normal girder

normal girder Jan 8, 2019, 10:10 PM

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4.21.1

winged badger Jan 8, 2019, 10:11 PM

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can you move the pawns

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or do anything?

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there is a gamemode option to start paused, is it on?

normal girder Jan 8, 2019, 10:12 PM

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me ?

thin stratus Jan 8, 2019, 10:24 PM

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@normal girder What template did you choose?

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Blank project?

normal girder Jan 8, 2019, 10:24 PM

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yes

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maybe i do wrong way

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but i would lean where i made wrong

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i suppose it because i don t understand really well Server Side And clientSide

thin stratus Jan 8, 2019, 10:25 PM

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I just don't believe this can happen

normal girder Jan 8, 2019, 10:25 PM

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or somthing like that

thin stratus Jan 8, 2019, 10:25 PM

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So I'm gonna check now

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If I run into the same issue I'm gonna check tomorrow (kinda late)

normal girder Jan 8, 2019, 10:25 PM

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that take 3 min to do

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oki

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it try with 4.20 is case it s ok

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Well well well

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@thin stratus

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in 4.20

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il t ok

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th begin play is print

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and the tick too

thin stratus Jan 8, 2019, 10:29 PM

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I used 4.21.1 and my Pawn prints

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Create GameMode Child (can apparently also be a GameModeBase Child, as long as GameMode has GameState and GameModeBase has GameStateBase as GameState Class assigned).
Create Pawn Child
Add Print String to Tick of Pawn
Set the DefaultPawn of the GameMode to NONE
Add PostLogin and SpawnActorNode, as well as Possess Node
Assign the GameMode class in the ProjectSettings

worthy wasp Jan 8, 2019, 10:31 PM

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@thin stratus - what are your PIE testing setup variables?

https://puu.sh/CtHsZ/fe6cb668c6.png

normal girder Jan 8, 2019, 10:31 PM

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😢

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i ll try

thin stratus Jan 8, 2019, 10:31 PM

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Whatever it starts with when you open a frehs project

worthy wasp Jan 8, 2019, 10:31 PM

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which ISNT this....

normal girder Jan 8, 2019, 10:32 PM

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@thin stratus but why in 4.20 it s ok ?

worthy wasp Jan 8, 2019, 10:32 PM

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so you're playign with SINGLE PROCESS = true

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and only 1 player?

thin stratus Jan 8, 2019, 10:32 PM

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Kurlrip said he created a frehs project

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He never said he touched the singleprocess var

worthy wasp Jan 8, 2019, 10:32 PM

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i understand - sorry i dont mean to thrwo mud into the mix

thin stratus Jan 8, 2019, 10:32 PM

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I'm not discussing your case

worthy wasp Jan 8, 2019, 10:32 PM

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❤

normal girder Jan 8, 2019, 10:33 PM

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@thin stratus sorry bur "Create GameMode Child" is different taht creat a game mode ?

thin stratus Jan 8, 2019, 10:36 PM

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https://www.dropbox.com/s/ybwz0x4i63fqf08/2019-01-08-2333-38.flv?dl=0

Dropbox

2019-01-08-2333-38.flv

Shared with Dropbox

normal girder Jan 8, 2019, 10:36 PM

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📎 TestMulti.7z

thin stratus Jan 8, 2019, 10:36 PM

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Let me know if I do something that you didn't say

normal girder Jan 8, 2019, 10:37 PM

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if someone want look...

thin stratus Jan 8, 2019, 10:37 PM

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Above is a complete blank ue4 bp project

normal girder Jan 8, 2019, 10:37 PM

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i look at you vids

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thk

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@thin stratus (french ? )

thin stratus Jan 8, 2019, 10:40 PM

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German

normal girder Jan 8, 2019, 10:40 PM

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haok

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( becaouse the hour of your vids 😃 )

thin stratus Jan 8, 2019, 10:41 PM

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Yeah heading to bed right now

normal girder Jan 8, 2019, 10:41 PM

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pfffff

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i do same as you...

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hoaaaaa OK

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it s ok now !!

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but i don t think i understand why...

normal girder Jan 8, 2019, 11:13 PM

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and the culprit is : GameState

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i don t know why, but when i put GameStatebase

worthy wasp Jan 8, 2019, 11:13 PM

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keep going....

normal girder Jan 8, 2019, 11:13 PM

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it s ok

worthy wasp Jan 8, 2019, 11:13 PM

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whats your GameMode type?

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GameMode or GameModeBase?

normal girder Jan 8, 2019, 11:13 PM

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No matter

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i tried the two

worthy wasp Jan 8, 2019, 11:13 PM

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it does matter

normal girder Jan 8, 2019, 11:13 PM

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and it s ok with teh two

worthy wasp Jan 8, 2019, 11:14 PM

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you get a warnign abotu not being able to mix the 2 in OUTPUT LOG

normal girder Jan 8, 2019, 11:14 PM

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no

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@worthy wasp ok

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

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?

worthy wasp Jan 8, 2019, 11:15 PM

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you foudn it!

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😉

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that is the one i'm talking about

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you can STILL PIE test (PIE =- Play In Editor).... it wont crash

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but

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its not good.

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as it most obviously states

normal girder Jan 8, 2019, 11:16 PM

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ok i ll take the GameMode so

worthy wasp Jan 8, 2019, 11:16 PM

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but i'm telling you.....

normal girder Jan 8, 2019, 11:16 PM

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but in all case, when i put my GameStat

worthy wasp Jan 8, 2019, 11:16 PM

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mine match in my project

normal girder Jan 8, 2019, 11:16 PM

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it don t work

worthy wasp Jan 8, 2019, 11:16 PM

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and i'm still getting errors with BeginPlay & Tick

normal girder Jan 8, 2019, 11:17 PM

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not me 😄

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but actually i don t really know why

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well in fact no problem with gamstate

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well

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i don t understand

worthy wasp Jan 8, 2019, 11:44 PM

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This screenshot shows the display of ListenServer, SingleProcess, 2-Players PIE testing (NewWindow). GameState + GameMode inherited.

Server is active player, pawn has been spawned on Server, and POSSESSED fires on the ListenServer (Print string verified).

My PrintString is showing up on the CLIENT - who doesnt even have a pawn spawned OR possessed..... but not on the ListenServer like i would assume it should be....
To go further, i've attached process to the SERVER window - and TICK DOES NOT HAPPEN

When i flip things over to the NetClient - it works flawlessly.

https://puu.sh/CtJe3/65a3865bb3.png

agile lotus Jan 8, 2019, 11:44 PM

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so get player controller 0 fails to get the host on gamemode after seamless travel

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I tried exposing session owner ID and using the unique ID from that to get the host but that also fails after seamless travel

worthy wasp Jan 8, 2019, 11:50 PM

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@agile lotus - are you Dedicated Server?

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or ListenServer model?

agile lotus Jan 8, 2019, 11:50 PM

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listen server

worthy wasp Jan 8, 2019, 11:52 PM

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this happens only AFTER a seamless travel? Initial connection - GetPlayerController(0) works fine?

agile lotus Jan 8, 2019, 11:52 PM

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yeah

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its like the player controller indexes get mixed up

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this is the second seamless travel btw

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they go seamless from lobby to gameplay

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then back to lobby

worthy wasp Jan 8, 2019, 11:53 PM

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its funny you mention that.... very exact words:

https://answers.unrealengine.com/questions/149051/how-can-i-get-my-own-playercontroller-on-my-listen.html

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look at 2nd answer

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sorry firs tanswer

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its very true too

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``You have to separate two things : Controller ID and Controller Index.

The index is the position in the world player controller's array. It may change for the same controller especially in a Listen Server after a seamless travel with a controller swap (ex : if changing the class).

The ID (indentifier) of the controller is store in the LocalPlayer and is unique for each local controller, where 0 is the "main" controller that can be used for referencing HUD & Widgets.

So " the controller on index 0 is always "your player controller" " is not true``

agile lotus Jan 8, 2019, 11:54 PM

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I change classes too that makes sense

worthy wasp Jan 8, 2019, 11:55 PM

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https://puu.sh/CtJHf/827186d103.png

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you have both getters available

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this was taken from inside AGameMode class too

agile lotus Jan 8, 2019, 11:55 PM

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so ID is the one I want

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interesting

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thank you for this

worthy wasp Jan 8, 2019, 11:56 PM

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💯

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i'll be honest