#multiplayer | Unreal Source | Page 470

thin stratus Jun 13, 2019, 8:40 PM

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Yeah not if you have a system where bIsSpeedboosting should do something

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Guess limiting the OnRep to simulated is enough >.>

west rapids Jun 13, 2019, 8:41 PM

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😄

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you could split the bool into 2 ints

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or bytes for less data

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0 an 1

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do it manually 😄

thin stratus Jun 13, 2019, 8:41 PM

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Yeah that's not the point sadly

west rapids Jun 13, 2019, 8:42 PM

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didn't u need an onrep that gets updated?

red musk Jun 13, 2019, 8:42 PM

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Hi everyone! I am connecting multiplayer through LAN using IP connection. On Android devices I am getting the IP to display on the host screen (so they can tell others what it is), retrieving this IP works great. On iOS though it doesn't, it's returning the MAC address instead, anyone know why iOS would be different?

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Here is how I am getting the IP Address

west rapids Jun 13, 2019, 8:43 PM

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if u repnotify a 0 and a 1, u could get away with it

red musk Jun 13, 2019, 8:43 PM

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{
    bool canBind = false;
    TSharedRef<FInternetAddr> localIp = ISocketSubsystem::Get(PLATFORM_SOCKETSUBSYSTEM)->GetLocalHostAddr(*GLog, canBind);
    return (localIp->IsValid() ? localIp->ToString(false) : "");
}```

thin stratus Jun 13, 2019, 8:45 PM

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@west rapids The Setup was:

UPROPERTY(ReplicatedUsing="OnRep_bIsSpeedBoosting")
bool bIsSpeedBoosting;

void SetIsSpeedBoosting(bool bNewIsSpeedBoosting)
{
    if(bIsSpeedBoosting != bNewIsSpeedBoosting)
    {
        bIsSpeedBoosting = bNewIsSpeedBoosting;
        OnRep_bIsSpeedBoosting(); // C++ requires server call of OnReps
    }
}

void OnRep_bIsSpeedBoosting()
{
    OnSpeedBoostStateChanged.Broardcast();
}

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Client calls "SetIsSpeedBoosting" on button press and replicates the flag to the server.
Server calls it too. OnRep never calls for the Client -> Delegate nevers calls for the Client

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Tada, bug.
Now I moved the OnSpeedBoostStateChanged.Broardcast(); where the Manual Server call of the OnRep is, while keeping it in the Onrep too.
And limited the replication of bIsSpeedBoosting to Simulated.

west rapids Jun 13, 2019, 8:47 PM

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did it work?

thin stratus Jun 13, 2019, 8:47 PM

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Yeah, Server and Client don't call OnRep anymore but directly the delegate.
And Simulated clients never call "SetIsSpeedBoosting" so for them the onrep calls properly

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Just took a bit to notice that the OnRep isn't calling cause of the double setting

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Would have guessed the Server still sort of makes the client call the OnRep

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But well

west rapids Jun 13, 2019, 8:49 PM

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hey it was a great setup

thin stratus Jun 13, 2019, 8:49 PM

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It also works as long as only the Server calls SetIsSpeedBoosting

west rapids Jun 13, 2019, 8:49 PM

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you can defactor back to it in 4.23 😄

thin stratus Jun 13, 2019, 8:49 PM

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But for Movement lag compensation reasons it's called on client too

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@red musk Sorry for spaming your question away

red musk Jun 13, 2019, 8:49 PM

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It's okay

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😢

west rapids Jun 13, 2019, 8:49 PM

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i cant help with iOS

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clueless there

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i g2g tho, good luck, hope exi got some knowhow there

thin stratus Jun 13, 2019, 8:50 PM

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I wouldn't try to rely on the Subsystems for this

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I would try to get the outer IP just by quickly calling an HTTP Request to something that returns the public ip

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That's all I can give you, g2g now too, gotta get up in a few hours again ;-;

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Feel free to just paste your question again

red musk Jun 13, 2019, 8:51 PM

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Cya!

meager spade Jun 13, 2019, 9:15 PM

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so

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i implemented my ammo array as a fast array serializer, even tried just a normal array

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the server value changes, but client never gets updated

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{
    int32 Idx = Ammo.IndexOfByKey(AmmoType);

    if (Ammo.IsValidIndex(Idx))
    {
        Ammo[Idx].RemoveAmmo(AmountToRemove);
        MarkItemDirty(Ammo[Idx]);
    }
}```

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im pretty sure im doing it right

meager spade Jun 13, 2019, 9:49 PM

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nvm got it working (finally)

harsh lintel Jun 13, 2019, 10:36 PM

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generate project files executable from source code is asking for .NET framework 4.6.2, will it not be happy if I install the latest?

fleet raven Jun 13, 2019, 10:38 PM

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install development tools for .net 4.6.2, it's an optional feature under the .net desktop development feature

harsh lintel Jun 13, 2019, 10:41 PM

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you mean in the visual studio installer right? i think i found it

fleet raven Jun 13, 2019, 10:44 PM

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yes

harsh lintel Jun 13, 2019, 10:46 PM

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thx

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ayyy I got baited

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i had to run this in cmd apparently "GenerateProjectFiles.bat -2017" but I ran the executable

magic helm Jun 13, 2019, 10:59 PM

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Would anybody be able to help me out with syncing up multiple moving platforms that follows a single spline?

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Im just trying to sync up cable cars that automatically start moving when the match starts but as players join in it gets desynced

timber tree Jun 13, 2019, 11:07 PM

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Hey guys,
I am using UWorks plugin, successfully created steam dedicated server

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but my client not able to connect to that server

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is open steam.steamServerId

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or open ip:port

tired juniper Jun 14, 2019, 3:05 AM

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Hi guys, I need to do asynchronous multiplayer (kind of http request), but still there is one UE4 server and multiple UE Clients. Is there anything in place to do this? like rpc or something like that? So far Im finding all realtime examples

alpine wagon Jun 14, 2019, 4:06 AM

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Just wondering if anyone had some article links or knew the magic google keywords for getting information on what sort of considerations need to be taken when designing for a 160 player cap on dedicated servers (not an mmo, just need to allow big games). I know the basic concepts of reducing traffic to/from the server but I'm not finding much about how this actually works in practice..

winged badger Jun 14, 2019, 4:10 AM

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@alpine wagon for that, i'd hire someone who has done 100+ player multiplayer networking before for a consult

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if that is a commercial project, that is

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if its a hobby one, i'd divide the number of players by 10 then go from there

alpine wagon Jun 14, 2019, 4:14 AM

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@winged badger Thanks though I'd figured that much out on my own. I know it's not a simple thing, was just wondering if anyone had some practical information about how they got started on this sort of problem.

winged badger Jun 14, 2019, 4:15 AM

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problem is, i am confident i'd see the traps and what to watch out for, if i started working on that scope, as i worked

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i can't list the off the top of my head tho

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and you probably need someone who can

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i have heard of horror stories from teams that went figuring it out as they went along

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like dedicated server needing 130ms just to figure out what it needs to replicate to whom

alpine wagon Jun 14, 2019, 4:20 AM

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Yeah I've heard some of the horror stories too but I'm not looking for creepy pasta links at this stage. I'm just at the information collection and assessment phase right now so what I'm hoping for is info about people who have managed it and what it took. Do you have anything like that?

winged badger Jun 14, 2019, 4:21 AM

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that particular scenario was 50k replicated actors, 40 players, no dormancy and pre-replication graphs

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don't know how useful that information is, but it does provide some insight in problems encountered at that scope

alpine wagon Jun 14, 2019, 4:32 AM

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No that was pretty much useless. The key words "replicated actors" however lead me to some useful documentation so thanks for that.

winged badger Jun 14, 2019, 9:10 AM

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Anyone had issues with FFastArraySerializer replicating junk? Server-side structs are added to the Items array, array is marked drity, and client-side replication callbacks fire

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only, the struct is junk

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even if i reduce it to just name, int, enum, with no custom serialization, its still junk

winged badger Jun 14, 2019, 11:06 AM

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nevermind, bug in debug tools is the worst kind of bug 😦

astral gust Jun 14, 2019, 12:38 PM

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Hi guys, so I'm trying to finally implement a delegate to invoke when an invite is received to a lobby from a Steam friend. Unfortunately the functions that I managed to find in the SteamWorks SDK are a bit harder to implement than I expected:

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STEAM_CALLBACK_MANUAL(USurvivalGameInstance, OnPartyInviteReceived_Steam, LobbyInvite_t, OnLobbyInvite); causes Error C2059 syntax error: ')' to be spammed while building in the generated files.

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Even declaring void USurvivalGameInstance::OnPartyInviteReceived_Steam(LobbyInvite_t *pParam) doesn't help. Any ideas?

twin vault Jun 14, 2019, 12:45 PM

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for that specific callback, theres AddOnSessionInviteReceivedDelegate_Handle built in

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anyway if you want to use steam's, make sure you have the includes

astral gust Jun 14, 2019, 12:46 PM

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Alright

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Here is a gist snippet of our code: https://gist.github.com/JasperDre/fa9074dace2dd95603ff1558d6197168

Gist

STEAM_CALLBACK_MANUAL syntax error

STEAM_CALLBACK_MANUAL syntax error. GitHub Gist: instantly share code, notes, and snippets.

twin vault Jun 14, 2019, 12:48 PM

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i believe you need the function declared

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OnLobbyInvite

astral gust Jun 14, 2019, 12:48 PM

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Are you sure FOnSessionInviteReceivedDelegate is implemented in the OnlineSubsystemSteam? I don't think it's actually invoked anywhere and just returns false.

twin vault Jun 14, 2019, 12:48 PM

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not sure, tbh, only seen it but havent tried

astral gust Jun 14, 2019, 12:48 PM

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OnLobbyInvite seems to be a variable generated using the STEAM_CALLBACK_MANUAL but I will give it a quick try

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So OnLobbyInvite is already defined using STEAM_CALLBACK_MANUAL

twin vault Jun 14, 2019, 12:52 PM

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yeah

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i mistook the last parameter for being the function

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its the callback variable

astral gust Jun 14, 2019, 12:54 PM

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Yeah the _manual macros take in extra arguments

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but its a weird error and I have no idea how to debug the generated files

twin vault Jun 14, 2019, 12:55 PM

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well

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i did the exact same as you and it worked

astral gust Jun 14, 2019, 12:56 PM

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fascinating

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I will try to clean up the uclass to see if there is something else causing this

harsh lintel Jun 14, 2019, 5:28 PM

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im getting this error when clicking the visual studio's local windows debugger button on a source code build, can't find an answer in google with this particular dll mentioned, anyone's had this issue?
UE4Editor-UnrealEd.dll is either not designed to run on windows or it contains an error. Try installing the program again using the original installation media. Error status 0xc000012f.

thick shale Jun 14, 2019, 6:49 PM

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Has anyone run across a problem with the CharacterMovementComponent where you can stay out of sync and receive corrections for every step you take?

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I'm trying to figure out what makes it stay permanently desynced

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Nevermind I think I figured it out, its related to some properties like ground friction or walk speed not being reset

grand kestrel Jun 14, 2019, 11:29 PM

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CMC has no such issue, it's something you're doing FYI

supple crypt Jun 14, 2019, 11:42 PM

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anyone know of a resource that explains player spawning? Like player 1 spawns at a spawn point marked for player 1 and so forth? (in cpp)

supple crypt Jun 15, 2019, 12:09 AM

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I can make the player spawn at any spot I want (in ChoosePlayerStart_Implementation) what I'm really looking for is how to tell who player one is vrs the other players

winged badger Jun 15, 2019, 1:18 AM

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reading the source code of GameMode is the best way

vestal knoll Jun 15, 2019, 3:05 AM

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Hi, i try to make the player (in a multiplayer environnement/game) face the cursor in a topdown view with WASD movement.

The problem i got into is that i try multiple solution(RepNotify, make custom even with runOnServer with reliable check, ...) but when i play it's not replicate the player rotation on the second client (I play it in PIE mode with dedicated server check).
What it's weird is the first client that connect/create the session have all player rotation change correspondant of his mouse but all other player see it move but not the oritation of him -_- I do the player face mouse cursor in blueprint.

I think i miss something in the replication or somethink like the change of oriantation i do doesn't change the oritation in movementComponent, i don't know xD

winged badger Jun 15, 2019, 3:14 AM

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yeah, never ever use GetPlayerController[0] if you don't know exactly what you're doing, and especially not on dedicated server setup

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@vestal knoll

vestal knoll Jun 15, 2019, 3:17 AM

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@winged badger Ohhh okay but how can i take the correct player controller, I try multiple exemple i found on internet to get the correct playerController but i always get stuck there

winged badger Jun 15, 2019, 3:17 AM

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some object reference other objects by default

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on client, GetFirstLocalPlayerController from GI, GetController from player Pawn, GetOwningPlayerController from HUD, GetOwningPlayer from any widget will get the PC

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i take it your troublesome relationship is with the Pawn

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so Cast<AMyPlayerController>(GetController()) will grab the controller from inside the pawn

vestal knoll Jun 15, 2019, 3:21 AM

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Hooo thank you i'll try with that!!

vestal knoll Jun 15, 2019, 4:48 AM

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@winged badger I try it and that doesn't really resolve my probleme xD what you gave me is for that the focused screen doesn't rotate other character but the rotation of the char isn't replicate to other unless for the first player connected to the party (I think it's because it's the one who created the party)

When i read again my message, i realize that i explain my probleme like a trash xDD

timber tree Jun 15, 2019, 7:12 AM

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HI,
I have setup a gameserver registered with Steam, it show in steam server list,
But when any player connects to the server, player count stays zero in steam server list.
Does not affect the gameplay though but I am still curious, how to increase player count in steam server details

rose egret Jun 15, 2019, 9:23 AM

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is there any relevancy for spawn of actors?

copper mango Jun 15, 2019, 9:48 AM

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the same IsNetRelevantFor is used for that

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so if you spawn an actor on the server, it won't tell the client about it if IsNetRelevantFor says false

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then if later it became relevant, then the server would tell the client about it

native moth Jun 15, 2019, 10:46 AM

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Hey guys. I'm trying to figure out how to go about setting up a shared presence system for the Oculus quest. Since the world origin[0,0,0] will be different for each headset when they start tracking, I will need a calibration step(most likely using the controller on the same physical location and then storing the offset to each headsets world origin), now for my question:

When spawning enemies etc. in the game, how can I make the client compensate the replicated positions from the server?
Example:
Server spawns enemy at [100,200,50]. Client 1 has calibrated an offset of [-200,100,25] and therefor the correct location for the enemy on the client should be [-100, 300, 75]

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I'm thinking adding a transform op on the client on tick is not the best solution

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(and can this be more general? since everything that gets replicated with transform needs to use this compensation)

thin stratus Jun 15, 2019, 11:29 AM

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Not quite sure what you are trying to achieve.

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Last time I did Oculus Multiplayer for a Client I didn't have to do any of that.

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The World Origin for each player, if you aren't actively shifting it, is always 0,0,0

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The Headset in VR is relative to the Pawn the Camera is on

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@native moth

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Maybe it's different for the Quest 🤔

native moth Jun 15, 2019, 11:31 AM

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yeah, but you have to remember this is 2 people inside quest headsets

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in the same physical space

thin stratus Jun 15, 2019, 11:33 AM

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Yeah but if they are also in the same multiplayer world, why can't they have the exact offset they have in real life?

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Let's say the middle of the reallife room is 0,0,0 in the game world.
If player one stands on 0,0,0 and player two stands 50 units to the left, then that should be the same in UE4 or?

native moth Jun 15, 2019, 11:34 AM

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because the tracking origins are not the same unless you start the quests up at the exact same physical place

thin stratus Jun 15, 2019, 11:34 AM

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Right that's a Quest thing then

native moth Jun 15, 2019, 11:34 AM

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yep

thin stratus Jun 15, 2019, 11:34 AM

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Hmmm

native moth Jun 15, 2019, 11:34 AM

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📎 unknown.png

thin stratus Jun 15, 2019, 11:34 AM

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Can you manually change the Tracking origin?

native moth Jun 15, 2019, 11:34 AM

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so while the relative origin in side UE 4 is the same, the physical origin is not the same

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not that im aware of

thin stratus Jun 15, 2019, 11:35 AM

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Do you have both tracking origins as vectors?

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It might be super easy to just make UE4 shift world origin

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iirc it supports that in multiplayer by now (i think)

native moth Jun 15, 2019, 11:36 AM

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not that im aware of no. So thats why I need a calibration step

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so if both players place their controllers in the same physical place and unreals then store that transformation offset compared to the world 0,0,0

thin stratus Jun 15, 2019, 11:36 AM

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But you could also simply tell UE4 to change the World Origin for the Client, right?
As far as I'm aware, replicated locations are shifted based on that

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So if you keep the Server at 0,0,0

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And you update the WorldOrigin of the client to the tracking start, it should resolve itself

native moth Jun 15, 2019, 11:37 AM

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okay, and that world origin shift is client only right? Its not something that the server needs to be doing?

thin stratus Jun 15, 2019, 11:37 AM

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Means the Client, in UE4, will have 0,0,0 at their tracking space.
And if you spawn an actor on the Server on 0,0,0, it will apply that offset to the client

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I haven't used it in Multiplayer

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But it's the most straight forward approach I would say

native moth Jun 15, 2019, 11:38 AM

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Interesting. I thought worst case is that every single replicated actor needed to have OnRep functions that updates the transformations on clients

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https://www.youtube.com/watch?v=G0WHhNQpf9I seems like this guy has it working 😄

YouTube

Michail Nikolaev

UE4 World Origin Rebasing Multiplayer - Test 3

▶ Play video

thin stratus Jun 15, 2019, 11:43 AM

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Yeah it should already do that by default

native moth Jun 15, 2019, 11:44 AM

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hmm, at the moment I'm thinking if changing the offset inside the clients pawn would be easier

thin stratus Jun 15, 2019, 11:45 AM

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You have to see that you need to apply that offset to literally everything

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If the World Origin of two players isn't the same, then you'd need to adjust every spawned/moved actor

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Cause Vector(x,y,z) on the Server is not at the same location as on the client

native moth Jun 15, 2019, 11:45 AM

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yep

thin stratus Jun 15, 2019, 11:46 AM

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So I would really first look into the World Origin rebase, cause that's literally just one function call

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Given you know the offset between the two track origins

native moth Jun 15, 2019, 11:46 AM

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Would need to also move/rotate the level when rebasing, but I guess thats pretty easy with some root actor getting changed

thin stratus Jun 15, 2019, 11:47 AM

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As said, that should technically all happen by default

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Can at least try it :D

native moth Jun 15, 2019, 11:47 AM

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yeah, will do!

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thanks for the input 😃

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worst case, the company will have to hire someone that knows what they are doing 😉

timber tree Jun 15, 2019, 2:10 PM

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I package my project as dedicated server and host works fine, but when I launch project to windows server and host it fails with lot of errors, anything important am I missing ?? my be any important step in creating custom launch profile

thin stratus Jun 15, 2019, 2:15 PM

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"lot of errors" we would need to know these to help you

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But in general, the difference between the Windows Server and your PC is probably stuff like DirectX and C++ Redistributables not being installed on a fresh windows server

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@timber tree

timber tree Jun 15, 2019, 2:16 PM

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ohh

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Error somthing like this

[2019.06.15-10.28.25:446][  0]LogWindows: Error: [Callstack] 0x00007ff8ae0d9129 KERNELBASE.dll!UnknownFunction []
[2019.06.15-10.28.25:447][  0]LogWindows: Error: [Callstack] 0x00007ff6d78d0dc7 RogueHeistServer.exe!ReportAssert() [d:\ue4linux4.22\engine\source\runtime\core\private\windows\windowsplatformcrashcontext.cpp:553]
[2019.06.15-10.28.25:447][  0]LogWindows: Error: [Callstack] 0x00007ff6d78d33d3 RogueHeistServer.exe!FWindowsErrorOutputDevice::Serialize() [d:\ue4linux4.22\engine\source\runtime\core\private\windows\windowserroroutputdevice.cpp:79]
[2019.06.15-10.28.25:447][  0]LogWindows: Error: [Callstack] 0x00007ff6d76ff95a RogueHeistServer.exe!FOutputDevice::LogfImpl() [d:\ue4linux4.22\engine\source\runtime\core\private\misc\outputdevice.cpp:71]
[2019.06.15-10.28.25:447][  0]LogWindows: Error: [Callstack] 0x00007ff6d768cc19 RogueHeistServer.exe!FDebug::AssertFailed() [d:\ue4linux4.22\engine\source\runtime\core\private\misc\assertionmacros.cpp:440]
[2019.06.15-10.28.25:447][  0]LogWindows: Error: [Callstack] 0x00007ff6d768cfa9 RogueHeistServer.exe!FDebug::CheckVerifyFailedImpl() [d:\ue4linux4.22\engine\source\runtime\core\private\misc\assertionmacros.cpp:418]
[2019.06.15-10.28.25:447][  0]LogWindows: Error: [Callstack] 0x00007ff6db0d068d RogueHeistServer.exe!DispatchCheckVerify<void,<lambda_4e61acb446d88d7b7096d16ad721787f> >() [d:\ue4linux4.22\engine\source\runtime\core\public\misc\assertionmacros.h:162]
[2019.06.15-10.28.25:447][  0]LogWindows: Error: [Callstack] 0x00007ff6d7984f59 RogueHeistServer.exe!FArchiveAsync2::Seek() [d:\ue4linux4.22\engine\source\runtime\coreuobject\private\serialization\asyncloading.cpp:7810]

vital thunder Jun 15, 2019, 6:12 PM

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when starting a multiplayer level at which point we can be sure that the player state is ready on a client ?

thin stratus Jun 15, 2019, 6:20 PM

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Depends where you want to know that.

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In the Pawn or Controller, there are OnRep_PlayerState functions (C++ only).

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The PlayerState itself obviously calls BeginPlay on the Client too.

meager spade Jun 15, 2019, 6:31 PM

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@timber tree thats not errors, thats a callstack

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and would need to see the full callstack not just that bit

timber tree Jun 15, 2019, 6:31 PM

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ok

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it starts from here

[2019.06.15-10.28.24:316][  0]LogLinker: Error: Bad name index -1522561844/209
[2019.06.15-10.28.24:316][  0]LogWindows: Windows GetLastError: The operation completed successfully. (0)
[2019.06.15-10.28.25:445][  0]LogWindows: Warning: CreateProc failed: The system cannot find the file specified. (0x00000002)
[2019.06.15-10.28.25:445][  0]LogWindows: Warning: URL: ../../../Engine/Binaries/Win64/CrashReportClient.exe "D:/PlayFabLocal/Config/PlayFabVmAgentOutput/2019-06-15T15-57-06/ExtAssets/ffffffff-ffff-ffff-bec9-01260000000083ce636d-9269-41e2-b32f-c5a34b275c9cWestUs/SH0/A0/RogueHeist/Saved/Crashes/UE4CC-Windows-3530F10348B60A9982B3E1A08AD64BF8_0000" -Unattended -nullrhi -AppName=UE4-RogueHeist -CrashGUID=UE4CC-Windows-3530F10348B60A9982B3E1A08AD64BF8_0000 -DebugSymbols=..\..\..\Engine\Intermediate\Symbols
[2019.06.15-10.28.25:446][  0]LogWindows: Error: === Critical error: ===
[2019.06.15-10.28.25:446][  0]LogWindows: Error: 
[2019.06.15-10.28.25:446][  0]LogWindows: Error: Assertion failed: InPos >= 0 && InPos <= TotalSizeOrMaxInt64IfNotReady() [File:D:\UE4Linux4.22\Engine\Source\Runtime\CoreUObject\Private\Serialization\AsyncLoading.cpp] [Line: 7810] 
[2019.06.15-10.28.25:446][  0]LogWindows: Error: Bad position in FArchiveAsync2::Seek. Filename:../../../RogueHeist/Content/WeaponSystem/BluePrints/WeaponSystem/BaseWeapon/BP_BaseWeapon.uexp InPos:1862289024, Size:20708
[2019.06.15-10.28.25:446][  0]LogWindows: Error: 
[2019.06.15-10.28.25:446][  0]LogWindows: Error: 
[2019.06.15-10.28.25:446][  0]LogWindows: Error: [Callstack] 0x00007ff8ae0d9129 KERNELBASE.dll!UnknownFunction []

meager spade Jun 15, 2019, 6:41 PM

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omg

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you could have used a pastebin

timber tree Jun 15, 2019, 6:41 PM

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Ooops😅

meager spade Jun 15, 2019, 6:42 PM

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delete all that

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your error lies here

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[2019.06.15-10.28.25:446][  0]LogWindows: Error: Bad position in FArchiveAsync2::Seek. Filename:../../../RogueHeist/Content/WeaponSystem/BluePrints/WeaponSystem/BaseWeapon/BP_BaseWeapon.uexp InPos:1862289024, Size:20708```

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that means your BP is possibly corrupted

timber tree Jun 15, 2019, 6:45 PM

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Ohh.. ok

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Sorry I never used pastebin😅

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I'll recheck the BP

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Thanks !!

urban flower Jun 15, 2019, 7:03 PM

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is there a good training video on using Sessions? 🤔

vital thunder Jun 15, 2019, 7:54 PM

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@thin stratus the thing is that I plan to have the player select object from a list and store the index of selected item inside the player state but that will happen before the player join a multiplayer game and then once he join the multiplayer game I want to get those index to actually load some visual on my UI but I tried to get the player state on the widget construct which most of the time doesn't work on client since it's not yet there and I tried to have to call a function on my widget from the begin play of my player state and it still doesn't work

high current Jun 15, 2019, 10:52 PM

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Hmm, I am switching my capture points spawning to be done by my game mode, for it to be agnostic of the map that its being loaded and played. And I am having trouble syncing the server-client spawning. Here is what I do, on GM i build up an array of what and where needs to be spawned, I pass that array to the game state, which then sets that array for itself, so it can be replicated to clients, its a rep notify, so in its function I actuall spawn actor from class. but the thing is that afterwards the behaviour of the capture points doesnt work, because they are basically 2 different actors between server and client...

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heh, maybe next time I should click this

📎 unknown.png

#

It works now, but either way, what is the proper method for spawning actors, especially when peeps can join in the game at any time

copper mango Jun 15, 2019, 11:17 PM

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if you spawn it on the server, then when the new client joins if the server thinks the actor is relevant to that player, then it'll tell them about it

#

you generally don't want to spawn actors on client unless it's like a predicted actor or something like that

high current Jun 15, 2019, 11:21 PM

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Yeah, right now with a server spawn on GS, everything works in editor, but I guess we will see on playtests when someone joins midgame

winged badger Jun 15, 2019, 11:39 PM

#

@high current why would you spawn them on clients separately?

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i mean there are reasons to do that if you want to keep them synced and not replicated at the same time

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but this doesn't seen to be the case

high current Jun 15, 2019, 11:41 PM

#

@winged badger you mean not have them in the level to begin with?

winged badger Jun 15, 2019, 11:41 PM

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well, if you're spawning the Actors at runtime

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and they are replicated

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just spawn them on server, do not spawn them on clients

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new ActorChannel gets created by the NetDriver, it sends the clients instructions to spawn the actor of <class> at <transform> that has these <replicated variables>

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clients receive a bunch, spawn the actor, set the replicated variables, after all repnotifies fire, they call PostNetInit, which then calls DispatchBeginPlay

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so that process is far more efficient then spawning them on server and client separately, and hoping they get synced before you need them

high current Jun 15, 2019, 11:45 PM

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yeah, ofc. its just that I had been working with that specific actor for weeks now, in a multiplayer enviroment, without ever replicating it, hence why I thought to enable its replication just now...

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Also, if I spawn them on GM directly, they will never get replicated to client, but that is cause GM doesn't exist on client right?

winged badger Jun 15, 2019, 11:47 PM

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no

#

NetDriver on server is very much aware of the GM on server

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its not the local version of GameMode that tells clients to spawn the actors

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NetDriver prepares the bunch for replication, then sends it across player's DataChannel (associated with the PC)

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each replicated Actor has its own ActorChannel, they do not use the ActorChannel of the object that spawned them

#

@high current the technique to use server side only non-replicated Actors to drive gameplay logic is pretty important

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example: mission system

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server has MIssionManager and Mission Actors, that run the logic, spawn (replciated)Actors required for the mission, keep track of when the objectives are completed, etc...

#

what do clients really need to know?

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where the mission is, what is the objective, and what is the status of the mission

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nothing else

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so you spawn some replicated marker actors, that automatically place themselves on the minimap and/or have some particle effects marking the mission area

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you send a few lines of text (or datatable row name client should read the text from)

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and an in32 or enum they can use to interpret which objective is currently active, and whats its state

high current Jun 16, 2019, 12:02 AM

#

@winged badger I knew it... its a bug with 4.15. But yeah. I am developing a game mode for Unreal Tournament, and I have been noticing replication bugs and inconsistencies with my normal UE experience, especially the fact that GM cant replicate anything. But yeah, the compartmentalizing of replication data is something I get and very much enforce everywhere. I do everything gameplay related in GM, GS keeps track of the current state if its relevant to clients, and any data needed for UI and hud of each client is in PS, I use the Player Controller to store global stuff that the player might need, so its accessible even when dead/spectating and so on.

winged badger Jun 16, 2019, 2:34 AM

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@high current i spent quite abit of time on 4.15 doing networking, i am not aware of any replication bugs with it

high current Jun 16, 2019, 2:41 AM

#

Might be just the unreal tournament version then, because as I mentioned, if GM casts to something, and runs a multicast (for example on GS), or even just changes a replicated value. The multicast will not run, and the variable will only be changed for the server version of GS and wont be replicated to clients, while if you do the opposite, and from GS you cast and get a variable from GM, and then set it locally, it will replicate properly, same with events...

meager spade Jun 16, 2019, 2:42 AM

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i would personally move from 4.15 then

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if it has such bug

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is there a reason you cant upgrade?

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oh your making a mod for UT4

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nvm

copper mango Jun 16, 2019, 2:50 AM

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@high current the game mode instance only exists on the server, so if you call a multicast on a game mode it'd not run on the clients

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unless you're saying something else

high current Jun 16, 2019, 3:02 AM

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Well, actually yeah, I phrased that badly, you cant multicast on GM, thats logical, but the other thing is very much the case.

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For example, I have a variable called NumberOfRounds which I have on GM, and I have to transfer to GS upon game start. If I, from GM, wait till GS is valid, cast to it and set its NumberofRounds to match GM, then GS doesnt replicate that variable to clients. But, if I, from GS cast to GM, get numberofrounds and set it to the local variable, it will be replicated to clients with no issue. Idk, I feel like the first scenario should work, and I have tested in it 4.18 and it does

winged badger Jun 16, 2019, 4:54 AM

#

and if you override init game and set it on GS from GM in the frame GS is spawned

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then it will be available on all clients when GS calls its BeginPlay

high current Jun 16, 2019, 9:41 AM

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I am overiding init game tho..

thin stratus Jun 16, 2019, 9:49 AM

#

GameMode has a InitGameState function

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Not sure if "InitGame" is meant to be that in your discussion

winged badger Jun 16, 2019, 10:01 AM

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sorry, its in preinitialize components, but init game state override works just as well

high current Jun 16, 2019, 10:24 AM

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Well in the case of 4.15 UT, it does not 😦

#

And weirdly there is no InitGameState here as well

haughty estuary Jun 16, 2019, 2:11 PM

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I have a weather struct in my GameState blueprint set to be replicated. In my GameMode I setup some default weather condition, am I right in thinking this struct is now replicated to all connected clients?

📎 Screenshot_2019-06-16_at_15.10.45.png

#

Also, how often will this struct be sent over the network? Is it only when it changes or constantly being sent? It's something that may change every 5 minutes so sending it every frame wouldn't be required.

high current Jun 16, 2019, 2:25 PM

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Afaik, this should work, and it will only be replicated when you change the variable

#

what is your replicated condition?

haughty estuary Jun 16, 2019, 2:30 PM

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@high current Set to None I'm new to replication so just trying to test it out, I'm trying to just log the data to the screen on each client

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This is in my player controller

📎 Screenshot_2019-06-16_at_15.29.43.png

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Doesn't do what I thought it would do though, It logs everything in the server window and not on the client

high current Jun 16, 2019, 2:31 PM

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That is kinda useless, if you want to check the variable, just set it to RepNotify, then a function will be created, within that function you can run the print string

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RepNotify will execute the function as soon as that variable is changed and recieved by anyone who needs to recieve it

haughty estuary Jun 16, 2019, 2:33 PM

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Ah ok, that sounds perfect

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Are there any tips on choosing between Replicated instead of RepNotify?

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Also, is the OnRep_Weather function called on each client?

high current Jun 16, 2019, 2:40 PM

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yes if the client recieves the update, it is called

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RepNotify is preferred over replicated only if you intend on doing any logic right as soon as you get the variable.

haughty estuary Jun 16, 2019, 2:44 PM

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Thanks @high current

high current Jun 16, 2019, 2:44 PM

#

np

haughty estuary Jun 16, 2019, 2:46 PM

#

I'm trying to keep it simple to get my head around replication, for this test I just want to update the hud for each client to show the new weather, the game mode is responsible for changing the weather over time

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So OnRep_Weather is where I would get the player controller and call my function that updates the UMG widget with the new values?

high current Jun 16, 2019, 3:03 PM

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yes, that is correct

high current Jun 16, 2019, 3:39 PM

#

Hmm, wondering what is the cleanest way to do the following: event based hud, which does something when a state in another actor changes. Talking about my precious capture points again. All of their logic is based on one RepNotify. So whats better, at begin play on the version of the capture point, save the hud reference, and then on the RepNotify, just execute events from the ref. Or use Event Dispatchers? Or something else I haven't though of ofc

winged badger Jun 16, 2019, 5:04 PM

#

c++ invloved?

high current Jun 16, 2019, 5:30 PM

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Nop, BP only

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Curious how would C++ change the methodology, still haven't gotten into C++, but I plan to (if i want a job lol)

winged badger Jun 16, 2019, 5:35 PM

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it has tools BP doesn't

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as single manager actor for all capture points, and FFastArraySerializer for FCapturePoiintStates

#

its capable of per item add/remove/modify callback on the clients

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which makes things a lot less messy (and effective)

high current Jun 16, 2019, 5:46 PM

#

Interesting, thanks for the info. And as far as BP goes, how would you handle this?

winged badger Jun 16, 2019, 5:56 PM

#

probably a component on the GS, replciated array of structs (capture point ID, status), and an event dispatcher called from onrep that HUDs hook into

#

its far less elegant but its still robust

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and it can be done agnostic of GameState type itself, with GetGameState->FindComponentByClass<CapturePoiintManager>

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so it would work for different GS types and differnt HUD types, which is a plus

manic pine Jun 16, 2019, 6:02 PM

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anyone know if creating actor channel/new actor replication is guaranteed to happen before the replication of a pointer to this new actor occurs on the client?

winged badger Jun 16, 2019, 6:02 PM

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disadvantage is that you'd have no idea what in array changed when its replicated, so you'd have to go thru the entire thing, but a tiny struct and im guessing 5 or less caputre points its ok

#

its not @manic pine

#

you can try mitigating that with manipulating net priority, but if you count on that and one of higher priority packets gets dropped, you're fucked

manic pine Jun 16, 2019, 6:04 PM

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hmm so ReplicatedPointer = World->SpawnActor() could end up repping to the client, but actually repping a nullptr?

winged badger Jun 16, 2019, 6:05 PM

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it happens frequently with APlayerState* in controllers and pawns

#

depending on how much stuff you have to replicate

manic pine Jun 16, 2019, 6:06 PM

#

but in those cases, do you get a nullptr rep, or no rep at all?

winged badger Jun 16, 2019, 6:06 PM

#

OnRep fires

high current Jun 16, 2019, 6:06 PM

#

In my case, fortunately I don't need to think about different HUDs or GSs, but what I have now is agnostic to both I guess. On the HUD (UMG) I have a initializing function which looks up all capture points present ( I could get it from GS) its all the same... That function creates child widgets according to each capture point, and gives the capture point a ref of the widget(not replicated ofc). Then on the capture point rep notify, it checks if the widget ref is valid, and calls a custom event inside it depending on the info it needs to show.
It felt weird to do event dispatchers, considering I already have a RepNotify which does the same thing...

winged badger Jun 16, 2019, 6:06 PM

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and its a null

manic pine Jun 16, 2019, 6:06 PM

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ugh, so onrep with nullptr

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yeah, thats what i feared

#

maybe theres a way to force the channel to open first

winged badger Jun 16, 2019, 6:07 PM

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RepNotifies don't really check if you have the same value now as the old one

#

xenonic tried the other day, apparently it did not go well

#

and even that, your packet can still get lost

manic pine Jun 16, 2019, 6:07 PM

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wouldnt this be considered 'reliable' though and thus be guaranteed to be ordered?

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or is that only per channel

winged badger Jun 16, 2019, 6:08 PM

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if you're replicating a bunch of actors spawned in single frame

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they will arrive on the clients in order of NetPriority

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high to low

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but that doesn't protect you from one of those packets getting lost

manic pine Jun 16, 2019, 6:09 PM

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alright, thanks

winged badger Jun 16, 2019, 6:09 PM

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its the same effect as forcing an actor channel

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unreal will try to replicate them in your desired order, but...

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@high current GameState does feel like the place you'd want to keep track of and replicate the score from

manic pine Jun 16, 2019, 6:11 PM

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high packetloss settings should let me produce this behavior then ye

winged badger Jun 16, 2019, 6:11 PM

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i am currently running an experiment with NetPriority 4 PlayerState

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its been a few months and i didn't catch one occasion of it failing to arrive before the Pawn

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disclaimer: the game hasn't been thru any but casual testing during the entire period

manic pine Jun 16, 2019, 6:13 PM

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but you have tried packetloss sim then i assume

winged badger Jun 16, 2019, 6:13 PM

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i don't entirely trust the editor there

manic pine Jun 16, 2019, 6:13 PM

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yeah its one way isnt it

winged badger Jun 16, 2019, 6:13 PM

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i did put in an ensure in that onrep

high current Jun 16, 2019, 6:13 PM

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In theory yes, but for the capture points I skipped it and went straight to GM, with a single dispatcher which runs and event if a point has been captured. Why, cause on that event I change the game score, which only GM has write access to any way, and the score is already replicated and known to everyone in their huds

winged badger Jun 16, 2019, 6:14 PM

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editor packet lag sim is weird

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all the lag is server->client

manic pine Jun 16, 2019, 6:14 PM

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yeah not sure why they'd do it that way

winged badger Jun 16, 2019, 6:15 PM

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probably easier

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i discovered today what a joy a static delegate is for single process PIE testing

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😦

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yes, it gets shared between all "instances"

manic pine Jun 16, 2019, 6:17 PM

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haha yeah thats a fun combo

potent prairie Jun 16, 2019, 9:04 PM

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How do you deal with minor jitters when playing on a server? I sometimes get them when I stop moving or switch direction. Not all the time though. Might be a ping issue as I get them in other ue4 games like fortnite if my ping is above 80

copper mango Jun 16, 2019, 10:32 PM

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@potent prairie they’re client mispredictions where basically the server sends a correction because it thinks you’re wrong

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If you turn on p.NetShowCorrections 1 you’ll see them

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And yeah the higher your ping the more potential for corrections

potent prairie Jun 16, 2019, 11:16 PM

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So is there a way to completely stop that from happening

copper mango Jun 16, 2019, 11:24 PM

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well, it's impossible to never have any corrections, but if there's like specific actions you've added that seem to be correcting a lot, that might mean it's not implemented in a network-friendly manner

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and there are some parameters you can tweak to maybe reduce frequency of corrections also

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and there's tricks to try to hide it so you don't notice the corrections as much

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but in a server-authority game there's always going to be corrections from the server, your goal is just to have them be low frequency at reasonable pings

harsh lintel Jun 16, 2019, 11:50 PM

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any resource recommendation on setting up a database for my game?

potent prairie Jun 17, 2019, 12:04 AM

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Seems really weird that just moving around would cause corrections. I dont get them every time which makes me think it might be the server not performing well. Or my internet wifi haha

copper mango Jun 17, 2019, 12:19 AM

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it likely isn't server performance

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wifi is trash for internet

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well, for gaming that is

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because it's going to have packet loss and inconsistent speeds

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unless you live in a place where you have the frequencies all to yourself

high current Jun 17, 2019, 12:24 AM

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Or you might have custom movement in effect, do you have that?

potent prairie Jun 17, 2019, 3:11 AM

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I did make a custom movement component and it helped, I also made some changes to the config files for network and that helped a ton, but I also need to test with an ethernet cable so I'm not going to touch any code until I do that

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im unfortunately away from my house for a few weeks so working on wifi haha

potent prairie Jun 17, 2019, 3:49 AM

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its 100% my wifi lol skipping all over every game xD

winged badger Jun 17, 2019, 4:33 AM

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only its supposed to work over wifi

potent prairie Jun 17, 2019, 7:29 AM

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i was getting like 30 packet loss in fortnite so basically unplayable

worthy perch Jun 17, 2019, 7:54 AM

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Do you guys develop your multiplayer games with packet loss in mind? I'm not too familiar with packets loss, or out of order, or stuff like that. I have only taken latency into consideration.

plain flume Jun 17, 2019, 7:56 AM

#

Does anybody here have Experience with node.js? Got a question there

real yacht Jun 17, 2019, 7:59 AM

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i have some experience with node.js

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depends what do you need @plain flume

plain flume Jun 17, 2019, 8:32 AM

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I have a ÍO object I declared. I woudl want to call that io objects io.emit function in other .js file. I just cannot get reference to it :/.

📎 node.png

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I used module.exports = io; in bottom of the file and required it other file : let www = require('../bin/www');

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but then I type www.io , nothing comes up

real yacht Jun 17, 2019, 8:39 AM

#

did you included your other.js file?

#

what is www?

#

its folder

#

?

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you have also var io in this file

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so maybe you have same function name declared in both files

plain flume Jun 17, 2019, 8:44 AM

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I included it in other file with let www = require('../bin/www'); www is the default file created by Express framework, where the server is started etc.

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*when the server is started

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It generates stuff like this.

📎 node.png

#

I originally tried to start my socket.io in different .js file, but I stumbled into same problem. I could not get access to the server object that is created in www file.

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so I started my socked inside www where server is declared

copper mango Jun 17, 2019, 9:36 AM

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@worthy perch well, the main thing you can control for packet loss is making sure critical RPCs are flagged as reliable, but I mean ultimately if the packet loss is more than a couple of percent most network games are going to have a bad experience

humble comet Jun 17, 2019, 11:07 AM

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is there anyone who is using gamelift, l would like to discuss some questions about it

real yacht Jun 17, 2019, 11:07 AM

#

does anyone have experience with amazon lambda and ue4 http requests?

meager spade Jun 17, 2019, 1:26 PM

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anyone have any idea why the Steam netdriver doesnt want to load when i do Launch Game but instead falls back to IpNetDriver ?

#

yet packaged build works

#

nvm fixed it

glass plaza Jun 17, 2019, 5:22 PM

#

Is this something that should be happening?

📎 unknown.png

#

This is a VR Multiplayer project and most of the ms are coming from CPU Stalls while profiling that game.

fleet raven Jun 17, 2019, 5:25 PM

#

that just means the thread you are looking at is idle waiting for work

#

find one that is actually busy

bitter oriole Jun 17, 2019, 5:25 PM

#

^

#

Probably either Game or Render

harsh lintel Jun 17, 2019, 6:50 PM

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what do you guys use for backend/database?

native moth Jun 17, 2019, 7:00 PM

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@thin stratus just an update on the world origin stuff/rebasing... Tried making it work in the 3rd person template but it keep causing desync between client and server, so I guess thats not the way to go at the moment :P(I might be missing something though)

scenic raven Jun 17, 2019, 8:28 PM

#

I have one of the usual crazy multiplayer bugs I can't troubleshoot. I overrid GameModeBase::HandleStartingPlayer() in this way ```cpp
void AVVGameModeBase::HandleStartingNewPlayer_Implementation(APlayerController* NewPlayer)
{
auto NewVirePlayer = Cast<AVVPlayerController>(NewPlayer);

// If players should start as spectators, leave them in the spectator state

if (!IsLobby() && PlayerCanRestart(NewPlayer))
{
    // Otherwise spawn their pawn immediately
    RestartPlayer(NewPlayer);

    if (NewVirePlayer)
    {
        NewVirePlayer->EnterGame();
    }
}
else
{
    if (NewVirePlayer)
    {
        NewVirePlayer->EnterLobby();
    }
}

}


Is Lobby is a method that checks if I'm in a specific map. When in the lobby I do a seamless travel to the real game map and this is run again, this time entering the other codepath. Now I have a problem. In my controller I have the following implementations for EnterLobby and EnterGame ```cpp
void AVVPlayerController::EnterLobby()
{
    Client_EnterLobby();
}

void AVVPlayerController::Client_EnterLobby_Implementation()
{
    if (IsLocalController())
    {
        InitWidget(wJoinDialog, JoinDialog);
    }

    check(JoinDialog);
}

void AVVPlayerController::EnterGame()
{
    EnterGame_Internal();
    Client_EnterGame();
}

void AVVPlayerController::Client_EnterGame_Implementation()
{
    check(IsLocalController());

    if (JoinDialog && JoinDialog->IsVisible())
    {
        JoinDialog->RemoveFromViewport();
    }
    // [...]
}

My problem is that JoinDialog, in the 2nd call is nullptr, but the widget is there on the screen. Any clue?

#

Non seamless travel works

#

and local play works

copper mango Jun 17, 2019, 8:39 PM

#

doesn't it make a new player controller object when you travel to the next level?

scenic raven Jun 17, 2019, 8:43 PM

#

when you do seamless travel the controllers are persisted

#

I wonder if it persists all of the controllers properties or just the default ones

#

fact is, the widget is still there 😦

bitter oriole Jun 17, 2019, 9:11 PM

#

Am I wrong to assume that UStructs are replicated as a whole atomically, and not piece-by-piece ?

rotund sapphire Jun 17, 2019, 9:17 PM

#

there is limitation to the payload size of a network packet. tho i guess this is not what you mean by your question

bitter oriole Jun 17, 2019, 9:18 PM

#

I mean, if I have a replicated Ustruct and I change two values on it, am I guaranteed they will be replicated simultaneously ?

#

Or can I get bool A first and then bool B a frame later

rotund sapphire Jun 17, 2019, 9:20 PM

#

hope not

bitter oriole Jun 17, 2019, 9:23 PM

#

Same 😬

sharp pagoda Jun 17, 2019, 9:43 PM

#

There's an atomic meta flag for ustructs iirc, otherwise I believe it's not guaranteed

#

@bitter oriole

bitter oriole Jun 17, 2019, 9:51 PM

#

Thanks

limber mortar Jun 17, 2019, 11:14 PM

#

Does anyone know why my dedicated server game fails on the actual server, but works in my personal testing? I thought I just needed to check the box for dedicated server and it would run what was needed. Do I need to use the project launcher to actually compile and run a server version in the background to keep it up? And then connect to my localhost IP?

#

This error does not happen on my pc

📎 unknown-2.png

#

Or .. I can't get it to display in the message log, and my client doesn't crash

meager spade Jun 18, 2019, 12:17 AM

#

@scenic raven one word of advice, dont handle widgets like that :D, Widgets should be handled either in local player, gameinstance or something else

#

something more persistant

#

also why is your player controller handling lobby joins?

#

thats the job of the GameInstance

#

@limber mortar you need to compile the dedicated server using the source build

#

and create dedicated server target

limber mortar Jun 18, 2019, 12:29 AM

#

I do

#

I have the dedicated server running my game, people can connect and play. I have a 8 core desktop with 1080 card running the source build

#

I use project launcher to cook, visual studio, then package the project in UE4 source build

limber mortar Jun 18, 2019, 12:49 AM

#

I'm adding new components

rotund sapphire Jun 18, 2019, 12:51 AM

#

Well i never seen that particular error message before, but judging by the message it is something like you're running different versions of client / server and they are in a disgreement about the replicated informations.

limber mortar Jun 18, 2019, 1:01 AM

#

Thanks

#

That makes sense, I'll see if that is what is going on

harsh lintel Jun 18, 2019, 3:26 AM

#

anyone's used the VaREST plugin? I was wondering how reliable it is

knotty ether Jun 18, 2019, 5:25 AM

#

I’ve got a weird issue in a UE4 replicates game. I’ve been testing in editor, and I’ve been having weird replication events where functions wouldn’t call, and other just bizarre stuff. For example, an enemy or the player will go immune to damage for a period of time. I can’t explain this, I’ve checked everything, and it seems to be a dedicated server replication issue, but I’m testing in editor with zero ping. Is this a known thing, is there a simple fix?

fossil spoke Jun 18, 2019, 5:27 AM

#

It is most definitely a bug with your code, not a bug with the engine.

#

Could almost be a problem with you using an Unreliable RPC.

knotty ether Jun 18, 2019, 5:29 AM

#

How could I try to fix that?

fossil spoke Jun 18, 2019, 5:30 AM

#

Thats a guess mate, you havent posted any code at all so there is no way i can recommend you to do anything.

knotty ether Jun 18, 2019, 5:32 AM

#

Ok, I was thinking this had to be something simpler than that... one sec.

#

Take damage, which seems to not always be called

📎 unknown.png

#

📎 unknown.png

#

📎 unknown.png

#

It's pretty simple, it just detemines whether to take damage from HP or shield, takes that, and then does some UI stuff and prepares to regen.

#

Other than that, it's little gameplay stuff that's working, when the function is called.

fossil spoke Jun 18, 2019, 5:36 AM

#

You do know there is already a built in Damage framework?

knotty ether Jun 18, 2019, 5:36 AM

#

Yes, I do.

fossil spoke Jun 18, 2019, 5:36 AM

#

So why are you using your own?

knotty ether Jun 18, 2019, 5:37 AM

#

I just didn't think of using it at the time. Is there something it does far better than a basic reliable event?

fossil spoke Jun 18, 2019, 5:38 AM

#

It provides you with much more information about the Damage, there is also 2 types of damage you can apply.

#

Radial and Point damage.

#

As long as you apply damage on the Server you dont have to worry about silly RPCs

#

Which means changes to Health variables can be easily replicated.

#

When applying that damage.

#

Avoiding your current issue entirely.

knotty ether Jun 18, 2019, 5:40 AM

#

Ok, let me quickly switch some stuff around.

#

Is there a difference between "Executes on Server" and the OnlyOnServer from the default damage function?

fossil spoke Jun 18, 2019, 5:44 AM

#

They are both saying that whatever your calling can only be executed by the Server.

knotty ether Jun 18, 2019, 5:46 AM

#

Ok, it seems switching it is not fixing the issue... My simple damage function is set to Run on Server and to be reliable, it has a priority of 3.

#

With zero ping time and under 50% processor usage it seems to me like this shouldn't be such a huge issue.

#

Regeneration is being disabled before damage, so health can't be modified in two places at a time.

#

Testing more, the enemy that is giving the most issues has an AOE ground attack and a projectile attack. Each on their own does not cause issues, only the two paired together. It doesn't seem like that would be enough replication to cause issues.

#

Thank you for your time.

ocean geyser Jun 18, 2019, 6:46 AM

#

question. im trying to replicate a variable for each player on the server and im wondering if im doing something wrong or if its because im testing in the editor(as dedicated) with multiple clients.
i have my variable hunger that is replicated, and a server function that lowers the variable by X amount when called

void ASCharacter::SetupHunger()//called via a timer
{
    if (Role < ROLE_Authority)
    {
        UE_LOG(LogTemp, Warning, TEXT("Has NO Authority: %s"), *this->GetName());
        ServerSetHunger();
    }
    else
    {
        UE_LOG(LogTemp, Warning, TEXT("Has Authority: %s"), *this->GetName());
        LowerHunger(HungerDecrementValue);
    }
}

void ASCharacter::LowerHunger(float Val)
{
    GEngine->AddOnScreenDebugMessage(-1, 3.0f, FColor::Red, "Before Hunger: " + FString::SanitizeFloat(Hunger));
    Hunger -= Val;
    GEngine->AddOnScreenDebugMessage(-1, 3.0f, FColor::Red, "After Hunger: " + FString::SanitizeFloat(Hunger));
    if (Hunger <= 0)
    {
        
    }
}

bool ASCharacter::ServerSetHunger_Validate()
{
    return true;
}

void ASCharacter::ServerSetHunger_Implementation()
{
    LowerHunger(HungerDecrementValue);
}

heres what shows up in the log and on screen when it runs. the hunger for testing is suppose to lower by 3, but its like it runs twice each time and shows the clients both having authority and not having authority(unless thats just when the client runs it and the server runs it). would testing strictly in the editor cause these results?
https://gyazo.com/755a685c87fcdd303fc2bd23d92ea2e3
https://gyazo.com/91ad564e8ccf2aa0a8df8540ef15f597

Gyazo

bitter oriole Jun 18, 2019, 6:58 AM

#

@ocean geyser HUD debug strings are shared with all viewports in PIE

#

So yeah that's an editor issue

ocean geyser Jun 18, 2019, 6:58 AM

#

derp, well thats good to know

bitter oriole Jun 18, 2019, 6:59 AM

#

Mostly multiplayer testing sucks in editor

ocean geyser Jun 18, 2019, 6:59 AM

#

what would be a reliable way to quickly test MP

bitter oriole Jun 18, 2019, 6:59 AM

#

Best to launch two standalone instances and have them join

ocean geyser Jun 18, 2019, 7:00 AM

#

thank you sir, hopefully that fixes the frustration

bitter oriole Jun 18, 2019, 7:07 AM

#

Anyone has experience running listen servers with seamless travel ?

ocean geyser Jun 18, 2019, 7:08 AM

#

with or without steam?

bitter oriole Jun 18, 2019, 7:22 AM

#

Doesn't matter really

#

Trying to understand if a listen server creating a new session should use ServerTravel, and if that works with seamless travel

#

Getting some weird HUD crashes

grand kestrel Jun 18, 2019, 7:33 AM

#

@bitter oriole

#

Lol sorry

#

I was using my phone one handed and it @ you all on its own

#

Not sure how

#

The Galaxy curved screen makes it too easy to touch all sorts of stuff without meaning to

gleaming niche Jun 18, 2019, 8:01 AM

#

on mobile just touching someones name inserts the @grand kestrel

#

even if it's arleady there

grand kestrel Jun 18, 2019, 8:02 AM

#

Must have simultaneously bumped his name + enter, they're both on the curved edges

bitter oriole Jun 18, 2019, 9:46 AM

#

Anyone got an idea on this listen server + seamless business ?

covert gorge Jun 18, 2019, 9:48 AM

#

Hi! sorry to bother you but, does anyone know why characters stop replicating movement mode when they are attach to another actor? is it possible to fix that?

bitter oriole Jun 18, 2019, 9:49 AM

#

How could they replicate movement if they're attached ?

covert gorge Jun 18, 2019, 9:50 AM

#

because that other actor is a movable vehicle, but i want players to be able to move while being inside it

#

and default player movement base doesnt work well

bitter oriole Jun 18, 2019, 9:53 AM

#

I've never used the character movement component before, but this is generally not easy to do at all

covert gorge Jun 18, 2019, 10:02 AM

#

i know hehehe

thin stratus Jun 18, 2019, 10:40 AM

#

@bitter oriole What do you need?

bitter oriole Jun 18, 2019, 10:40 AM

#

Well, I'm trying to move my travel code to seamless travel

thin stratus Jun 18, 2019, 10:41 AM

#

Right, what part is not clicking yet?

bitter oriole Jun 18, 2019, 10:41 AM

#

But doing that crashes immediately when I create a new session as a listen server ; it looks like something really weird happened with my HUD class

thin stratus Jun 18, 2019, 10:41 AM

#

Well, SeamlessTravel is only for ServerTravels

bitter oriole Jun 18, 2019, 10:42 AM

#

Right

thin stratus Jun 18, 2019, 10:42 AM

#

Neither Hosting, nor Joining counts as ServerTravel

bitter oriole Jun 18, 2019, 10:43 AM

#

I am indeed using ServerTravel to move from single-player menu to listen server game level - maybe that's the problem ?

thin stratus Jun 18, 2019, 10:43 AM

#

Both are HardTravels

#

At least I've never tried/seen someone SeamlessTravel from MainMenu to a Listen hosted game

bitter oriole Jun 18, 2019, 10:44 AM

#

So, if I understand correctly - ServerTravel does seamless or not depending on gamemode::bUseSeamlessTravel ?

#

Or does it does seamless or not depending on the URL ?

thin stratus Jun 18, 2019, 10:44 AM

#

It should be Seamless Depending on the boolean

#

But a MainMenu GameMode is, at least on my end, never marked as seamless

bitter oriole Jun 18, 2019, 10:45 AM

#

Right, so I just need to uncheck it on my menu.

thin stratus Jun 18, 2019, 10:45 AM

#

Connecting and Hosting are both HardTravels

#

Once your Server is hosting and on the gameplay level, you can start ServerTraveling

bitter oriole Jun 18, 2019, 10:45 AM

#

I'm aware that all server / hosting state changes need to be hard travels

#

I'm just wondering if I need to change that bool everytime I'm going to call ServerTravel

#

Since, like, going back to menu from a listen server game can't be seamless either

#

Or should I use UGameplayUtils::OpenLevel instead ?

thin stratus Jun 18, 2019, 10:49 AM

#

I'm using OpenLevel for HardTravels, yeah

#

in c++ that's actually called ClientTravel

bitter oriole Jun 18, 2019, 10:49 AM

#

Well there's actually UGameplayUtils::OpenLevel

thin stratus Jun 18, 2019, 10:49 AM

#

Which OpenLevel ultimately also calls

bitter oriole Jun 18, 2019, 10:50 AM

#

So, let's get this straight, ClientTravel would work for hosting a game ?

thin stratus Jun 18, 2019, 10:50 AM

#

void APlayerController::ClientTravel(const FString& URL, ETravelType TravelType, bool bSeamless, FGuid MapPackageGuid)
{
    // Keep track of seamless travel serverside
    if (bSeamless && TravelType == TRAVEL_Relative)
    {
        SeamlessTravelCount++;
    }

    // Now pass on to the RPC
    ClientTravelInternal(URL, TravelType, bSeamless, MapPackageGuid);
}

/// @cond DOXYGEN_WARNINGS

void APlayerController::ClientTravelInternal_Implementation(const FString& URL, ETravelType TravelType, bool bSeamless, FGuid MapPackageGuid)
{
    UWorld* World = GetWorld();

    // Warn the client.
    PreClientTravel(URL, TravelType, bSeamless);

    if (bSeamless && TravelType == TRAVEL_Relative)
    {
        World->SeamlessTravel(URL);
    }
    else
    {
        if (bSeamless)
        {
            UE_LOG(LogPlayerController, Warning, TEXT("Unable to perform seamless travel because TravelType was %i, not TRAVEL_Relative"), int32(TravelType));
        }
        // Do the travel.
        GEngine->SetClientTravel(World, *URL, (ETravelType)TravelType);
    }
}

#

void UGameplayStatics::OpenLevel(const UObject* WorldContextObject, FName LevelName, bool bAbsolute, FString Options)
{
    UWorld* World = GEngine->GetWorldFromContextObject(WorldContextObject, EGetWorldErrorMode::LogAndReturnNull);
    if (World == nullptr)
    {
        return;
    }

    const ETravelType TravelType = (bAbsolute ? TRAVEL_Absolute : TRAVEL_Relative);
    FWorldContext &WorldContext = GEngine->GetWorldContextFromWorldChecked(World);
    FString Cmd = LevelName.ToString();
    if (Options.Len() > 0)
    {
        Cmd += FString(TEXT("?")) + Options;
    }
    FURL TestURL(&WorldContext.LastURL, *Cmd, TravelType);
    if (TestURL.IsLocalInternal())
    {
        // make sure the file exists if we are opening a local file
        if (!GEngine->MakeSureMapNameIsValid(TestURL.Map))
        {
            UE_LOG(LogLevel, Warning, TEXT("WARNING: The map '%s' does not exist."), *TestURL.Map);
        }
    }

    GEngine->SetClientTravel( World, *Cmd, TravelType );
}

#

It both ends in GEngine->SetClientTravel

#

So yes

bitter oriole Jun 18, 2019, 10:51 AM

#

As opposed to ServerTravel, which I currently use for starting the server

thin stratus Jun 18, 2019, 10:51 AM

#

OpenLevel constructs the CMD/URL from LevelName?Key1=Value2?Key2?Key3=Value3 etc.

#

While ClientTravel needs you to construct that upfront

#

And ClientTravel is a bit more user orientated

#

calling preClientTravel etc.

#

Which e.g. allows you to clean up your UI

bitter oriole Jun 18, 2019, 10:52 AM

#

So generally speaking - I should be using ClientTravel generally, and ServerTravel specifically for the purpose of changing levels in MP

thin stratus Jun 18, 2019, 10:52 AM

#

ServerTravel calls ClientTravel too (for the Clients)

#

But passes the bSeamless with it

#

Yeah

bitter oriole Jun 18, 2019, 10:53 AM

#

Well, thanks a bunch !

thin stratus Jun 18, 2019, 10:53 AM

#

From the docs:

UWorld::ServerTravel
- For the server only.
- Will jump the server to a new world/level.
- All connected clients will follow.
- This is the way multiplayer games travel from map to map, and the server is the one in charge to call this function.
- The server will call APlayerController::ClientTravel for all client players that are connected.

#

Anyway, g2g take care of the doggo

bitter oriole Jun 18, 2019, 10:54 AM

#

The "server only" line confused me into thinking I needed it to start the server

#

Thanks a lot

grizzled stirrup Jun 18, 2019, 12:52 PM

#

What's the best way to go about replicating PlayerName in PlayerState to clients?

#

Should I create a separate MyPlayerName property that copies the value of PlayerName on server but is replicated?

#

Or maybe store it as a replicated property on the owned pawn instead (since it's for a name tag system in this case)

#

I'm assuming I can't make the actual PlayerName property defined in APlayerState replicated without changing the engine source as it's already defined

meager spade Jun 18, 2019, 12:55 PM

#

err

#

PlayerPrivate is replicated

#

and is returned by GetPlayerName() function

#

    UPROPERTY(replicatedUsing = OnRep_PlayerName)
    FString PlayerNamePrivate;```

grizzled stirrup Jun 18, 2019, 12:57 PM

#

Oh wow so it does

#

Thank you so much

meager spade Jun 18, 2019, 12:57 PM

#

the old PlayerName is still there

#

just dont use it

#

but use the getter/setter functions

#

GetPlayerName/SetPlayerName

grizzled stirrup Jun 18, 2019, 12:57 PM

#

Ah great!! I won't access it directly

#

This is great thanks a lot

thin stratus Jun 18, 2019, 1:14 PM

#

GetPlayerName also has a way of defining a custom PlayerName

#

If that is ever needed

#

bUseCustomPlayerNames = true;

#

And then you can utilize GetPlayerNameCustom

#

We do this to maintain the default PlayerName while being able to show splitscreen player names

fleet raven Jun 18, 2019, 1:23 PM

#

huh

#

so the player has 2 names then?

grizzled stirrup Jun 18, 2019, 1:26 PM

#

Very cool stuff!

thin stratus Jun 18, 2019, 1:32 PM

#

@fleet raven Sorry?

fleet raven Jun 18, 2019, 1:33 PM

#

I'm wondering what the point of the custom player name is

thin stratus Jun 18, 2019, 1:33 PM

#

You can't override GetPlayerName

#

So you can't add any logic to it

fleet raven Jun 18, 2019, 1:33 PM

#

no but you can set it

thin stratus Jun 18, 2019, 1:33 PM

#

Yes

#

FString APlayerState::GetPlayerName() const
{
    return bUseCustomPlayerNames ? GetPlayerNameCustom() : PlayerNamePrivate;
}

FString APlayerState::GetPlayerNameCustom() const
{
    return PlayerNamePrivate;
}

#

The second one you can override

fleet raven Jun 18, 2019, 1:34 PM

#

oh it's virtual

thin stratus Jun 18, 2019, 1:34 PM

#

Yeah the CustomPlayerName one

fleet raven Jun 18, 2019, 1:34 PM

#

I guess I didn't consider that someone would use the player name for anything other than like, account name

thin stratus Jun 18, 2019, 1:34 PM

#

    /** returns current player name */
    UFUNCTION(BlueprintPure, Category = PlayerState)
    FString GetPlayerName() const;

    /** custom access to player name, called only when bUseCustomPlayerNames is set */
    virtual FString GetPlayerNameCustom() const;

#

We use it for both

#

It has the Steam name in it

#

But if you start a Splitscreen game, the names are changed to what window you have

grizzled stirrup Jun 18, 2019, 1:35 PM

#

Is PlayerName == the steam username by default if using the steam subsystem?

thin stratus Jun 18, 2019, 1:35 PM

#

Yes

grizzled stirrup Jun 18, 2019, 1:35 PM

#

Great!

meager spade Jun 18, 2019, 3:04 PM

#

PlayerName != Replicated

#

PlayerNamePrivate is replicated

#

PlayerName should have just been removed

#

its confusing and pointless, and people could just fix there stuff

#

instead of having stupid bugs if you have stuff link to PlayerName in bp!

scarlet osprey Jun 18, 2019, 3:38 PM

#

Hi! Is anybody aware of a method for multipeer multiplayer on mobile? meaning devices communicate directly over wifi or bluetooth without having to be in the same wifi/lan-network. It would be very advantageous for low latency AR shared world games. (Apple's Game Center can do that easily, but sadly the Online Subsystem iOS is an abandoned construction area since years)

urban flower Jun 18, 2019, 4:07 PM

#

dffffffffffffffffffffffffff why isn't rotation replication and smoothing at LEAST an option on pawn/characters

fleet raven Jun 18, 2019, 4:10 PM

#

?

#

character does smoothly replicate its rotation

jolly siren Jun 18, 2019, 4:31 PM

#

I'm trying to write some serverside anticheat code that stops clients from sending tons of hits in order to make their weapons stronger. For example, they make their gun fire at 3x the speed.
I have written a validate like this but it detects false positives. I'm assuming because the rpcs can get sent in bursts due to network conditions.
Has anyone done something like this, maybe some burst protection code?

bool ALineTraceGun::ServerNotifyHit_Validate(const FLineTraceHitResult& lineHit, const float ReticleSpread, const TArray<FLineTraceInfo> &bulletTraces) {
    // Ensure clients aren't sending hits too quickly
    const float CurrentTime = GetWorld()->GetTimeSeconds();
    const float Discrepency = WeaponConfig.TimeBetweenShots - (CurrentTime - LastHitTime);
    if (Discrepency > ValidateDiscrepancyAllowance) {
        UE_LOG(LogTemp, Error, TEXT("Cheat Protection: Client %s is sending hits too quickly %f"), *GetPlayerName(MyPawn), Discrepency);
        return false;
    }

    return true;
}

winged badger Jun 18, 2019, 4:33 PM

#

take more averaged out value

#

you can cheat too

jolly siren Jun 18, 2019, 4:35 PM

#

That makes sense

#

What do you mean by "you can cheat too"?

winged badger Jun 18, 2019, 4:35 PM

#

i mean, you can check how long did it take them to empty a clip

#

won't catch them every time, but it will soon enough

jolly siren Jun 18, 2019, 4:36 PM

#

ahh yeah good idea

winged badger Jun 18, 2019, 4:36 PM

#

emptying a clip in 2 bursts half a minute apart wouldn't trigger the condition

urban flower Jun 18, 2019, 4:41 PM

#

@fleet raven the control rotation it does, but not actual actor rotation 😦

#

couple of times so far I've been bitten by a character laying down on the client, but standing up on the server o.O

grizzled stirrup Jun 18, 2019, 4:56 PM

#

How can I have all clients update their team colors on new pawns at the beginning of each round in a round based game? It works for the initial round as TeamNum gets replicated down from the playerstate and SetTeamColors gets called automatically via the OnRep function. Any rounds past that, the TeamNum is already set, so the OnRep events don't go off again, and fetching the current TeamNum on the Pawn at the start of each round only retrieves it on the local owning pawn, and for no one else

#

I've tried on both PossessedBy (using a Client RPC) and Restart, but it only ever updates the colors for the local playing client and not the other players

#

Basically I'm not sure how to get remote clients to run the SetTeamColors function, as it appears to only run for the local pawn (or if the server, everyone)

#

Does Restart not get called on remote characters?

#

Maybe I could add a replicated byte that gets incremented each round to force a fresh update and call the OnRep function? EDIT: decided to just set team colors via the OnRep_CurrentRound function instead and it works fine

bitter oriole Jun 18, 2019, 5:13 PM

#

@sharp pagoda do you remember what the meta flag for atomicity was ? Is it RepRetry ?

sharp pagoda Jun 18, 2019, 5:14 PM

#

@bitter oriole "Atomic - Indicates that this struct should always be serialized as a single unit."

#

It's not a meta flag actually, just a regular

bitter oriole Jun 18, 2019, 5:18 PM

#

Great ! Thanks

glass plaza Jun 18, 2019, 5:21 PM

#

My spectators are hearing a loud pop when the server changes map in Seamless mode. I've tried shutting off all of my sounds before the travel but the spectator still hears the pop. Any idea what could be causing an audio glitch on Travel?

grand kestrel Jun 18, 2019, 5:31 PM

#

@sharp pagoda I've never used atomic, does this mean if any of the properties in the struct change, every property in the struct gets replicated?

sharp pagoda Jun 18, 2019, 5:32 PM

#

not sure, the docs are minimal as usual

limber mortar Jun 18, 2019, 5:45 PM

#

I'm getting ready to make another attempt at addressing my error. On pawn possession the client crashes, I'm trying to incorporate a marketplace purchase but this developer did his networking different then I laid out mine. The error doesn't appear on my workstation. Does anything in this look off?

📎 unknown.png

#

I've been told it could be because that start animation variable is showing a different value on the server and client but I haven't been able to pinpoint it yet, doing some more print strings now

harsh lintel Jun 18, 2019, 6:08 PM

#

do I need to rebuild the dedicated server on visual studio each time I modify the game and want to test it with the dedicated server?

harsh lintel Jun 18, 2019, 6:24 PM

#

fack I clicked rebuild

#

:pepehands:

limber mortar Jun 18, 2019, 6:24 PM

#

er, I might have made a typo

rotund sapphire Jun 18, 2019, 6:24 PM

#

If you accidently click something wrong in visual studio you can use the ctrl+break it should stop the compilation process

limber mortar Jun 18, 2019, 6:25 PM

#

yeah

harsh lintel Jun 18, 2019, 6:25 PM

#

break?

limber mortar Jun 18, 2019, 6:26 PM

#

pause

rotund sapphire Jun 18, 2019, 6:26 PM

#

Yes the button is in line with the printscreen. It is sometimes labeled as pause indeed.

harsh lintel Jun 18, 2019, 6:26 PM

#

ah nice

#

thanks

rotund sapphire Jun 18, 2019, 6:28 PM

#

Sometimes i have to click on the build window (where the log is) and press the button there so it will stop

harsh lintel Jun 18, 2019, 7:21 PM

#

I think I'm not getting something, with the dedicated server option in the editor, how do I know which dedicated server to run

#

the server pasted in the packaged project works but when I try playing on editor with dedicated server it crashes

thin stratus Jun 18, 2019, 7:29 PM

#

Best thing is to fix the reason for the crash

harsh lintel Jun 18, 2019, 7:41 PM

#

this is when I try to execute the server from the project binaries folder, the package with the server works fine tho

📎 unknown.png

worthy perch Jun 18, 2019, 7:43 PM

#

In Editor, you just tick the box for Run Dedicated Server.

thin stratus Jun 18, 2019, 7:45 PM

#

You need to show the top of what you posted

#

There needs to be an actual error

#

Please post the proper callstack via pastebin for example

#

None of us can help you without that

harsh lintel Jun 18, 2019, 7:46 PM

#

yeah i know, its kind of random since the window closes really fast and just throws a lot of info

thin stratus Jun 18, 2019, 7:46 PM

#

Log files are a thing

worthy perch Jun 18, 2019, 7:46 PM

#

I think that he thinks that he needs to run the Server.exe binaries to run a dedicated server for PIE.

thin stratus Jun 18, 2019, 7:47 PM

#

Yeah the window would suggest that

#

In Editor you indeed only tick the boolean in the advanced play setttings

harsh lintel Jun 18, 2019, 7:47 PM

#

when I tick the box, it doesn't open the specified level (the open level with ip node) maybe that's expected behaviour

thin stratus Jun 18, 2019, 7:47 PM

#

If you tick hte box and press play, you start in the level that the editor has open

#

Same as without ticking the box

harsh lintel Jun 18, 2019, 7:48 PM

#

so should this do anything at all?

📎 unknown.png

#

this the level im running on the editor

thin stratus Jun 18, 2019, 7:49 PM

#

This is not needed

#

In PIE, by default, Server and Clients autoconnect

#

You could disable it but that usually only makes sense if you want to test the connection process

#

Which can also just be tested in standalone of course

harsh lintel Jun 18, 2019, 7:52 PM

#

I think that he thinks that he needs to run the Server.exe binaries to run a dedicated server for PIE.

This is exactly what I assumed : D

thin stratus Jun 18, 2019, 7:53 PM

#

Na. PIE does that all for you

#

But it sadly sometimes hides some bugs that get visible later

#

So it's better to sometimes also test packaged

harsh lintel Jun 18, 2019, 7:55 PM

#

so instead of PIEing with the entry level that connects to the server I just need to open the level to test instead

worthy perch Jun 18, 2019, 7:56 PM

#

Essentially, yeah.
But just by the way, there are probably ways to run a standalone dedicated server and connect to it while PIE.

#

But, you likely don't need to do that.

harsh lintel Jun 18, 2019, 7:57 PM

#

well no I was just doing it because I thought it was needed, but I played myself lul

#

thanks both of you

thin stratus Jun 18, 2019, 7:58 PM

#

My suggestion is to never leave the PIE

#

In the sense of don't connect to the PIE from outside

#

And also don'T connect to something outside the PIE

#

The PIE works slightly different than a packaged game

#

Also PIE to PIE is bad

#

Just stay inside the littel PIE world and if you need to test properly, package your game

harsh lintel Jun 18, 2019, 8:02 PM

#

ill keep that in mind, thanks again

glass plaza Jun 18, 2019, 8:30 PM

#

FYI, you have roughly 15 seconds to press your Cancel Build command before an accidental Rebuild breaks anything.

limber mortar Jun 18, 2019, 10:07 PM

#

Cedric

#

I have an error that I don't get in standalone or PIE, but I get on my dedicated server

#

Which means I have to take time to package, upload, run, and then see if it works before troubleshooting again. Super inefficient, should I be trying to run a local dedicated server to recreate this instead of just checking the box?

grizzled stirrup Jun 18, 2019, 10:17 PM

#

Is there any reason an OnRep function gets called only for some remote clients but not all, even though it should be running the same code for all?

#

I have a round based game and the player names / team colors are replicated down at the start of each round

#

On round 1, a random selection of players will get the correct name / team color (sometimes half, sometimes all)

#

In cases where it's less than all, the second round will make it work for all

#

Is there any way for it to be more reliable, or some reason it's inconsistently missing?

#

I am playing in PIE with 100ms ping and simulating a small bit of packet variance which may be contributing to it

meager spade Jun 18, 2019, 10:30 PM

#

properties are always replicated

#

so unless your doing something funky, they should go through

grizzled stirrup Jun 18, 2019, 10:30 PM

#

They always eventually do

#

Just strangely inconsistent

#

Sometimes first round

#

Sometimes second round

#

No pattern- always different

meager spade Jun 18, 2019, 10:31 PM

#

maybe your changing it too early?

#

if the other actors havent got a channel

#

when round 1 starts

grizzled stirrup Jun 18, 2019, 10:31 PM

#

Yeah it might be the spawn order or something

meager spade Jun 18, 2019, 10:31 PM

#

then they wont ever get the onrep

#

round 2 they will cause they have a channel

grizzled stirrup Jun 18, 2019, 10:31 PM

#

It's being called after all players are spawned

#

But maybe I should delay that by a few frames or more?

meager spade Jun 18, 2019, 10:32 PM

#

may still be too early

#

just try a timer

grizzled stirrup Jun 18, 2019, 10:32 PM

#

Ok will do

meager spade Jun 18, 2019, 10:32 PM

#

for like 1 second

grizzled stirrup Jun 18, 2019, 10:32 PM

#

1 second or more

#

Cool

meager spade Jun 18, 2019, 10:32 PM

#

and see if works

#

pie is a bit iffy tho

#

might work fine in standalone

grizzled stirrup Jun 18, 2019, 10:33 PM

#

Thanks! Yeah it's just really tricky to test standalone with steam

meager spade Jun 18, 2019, 10:33 PM

#

yup

grizzled stirrup Jun 18, 2019, 10:33 PM

#

Because it doesn't let you use VPNs to simulate lag

meager spade Jun 18, 2019, 10:33 PM

#

you could always test it outside of steam

grizzled stirrup Jun 18, 2019, 10:33 PM

#

And weirdly any lag solutions I've tried don't work

#

Yeah that's true

#

@meager spade Haha that was it

#

Thanks a lot

#

When in doubt- delay!

limber mortar Jun 18, 2019, 11:13 PM

#

oh sweet

#

I was able to get the issue to create an error in my event log

#

hopefully I can troubleshoot now

#

ok

#

testing a fix

potent prairie Jun 18, 2019, 11:31 PM

#

yeah def test outside of PIE. Especially with multiplayer stuff

grizzled stirrup Jun 18, 2019, 11:36 PM

#

If you are doing a pre round countdown, is the correct flow for the GameMode to determine the delay, then tell the GameState to start decrementing the delay

#

Then the GameState decrements it and when done, calls an event on the GM to start the round?

meager spade Jun 18, 2019, 11:39 PM

#

gamestate should never tell the gamemode what to do

#

the gamemode should be doing the timer

#

and updating the gamestate

grizzled stirrup Jun 18, 2019, 11:40 PM

#

Ah great that makes life much easier

#

Thanks!

limber mortar Jun 19, 2019, 1:49 AM

#

Heck yeah, I was able to fix my pawn possession problem

thin stratus Jun 19, 2019, 5:33 AM

#

@limber mortar Was sleeping already, but yeah you don't have to upload the Server.

#

If it only happens in a packaged build you could try running a standalone version first (see the end of my compenduim on how to start a dediServer from console).

#

If it really can't be reproduced outside of packaged builds, then you can of course run the build on your pc

bitter oriole Jun 19, 2019, 7:09 AM

#

So, looking at a game server transitioning into a new level - the server loads the new level, then the hosting player (listen server here) gets the new level, and it looks like clients only start loading at that point. Is that normal ? How can I make the process more parallel ?

winged badger Jun 19, 2019, 7:32 AM

#

@bitter oriole i believe i had clients load world faster then host on one iteration (without the loading screen) then the server

#

can't say when they started exactly

#

but i am sure they would sometimes call NotifyLoadedWorld first

#

or NotifyWorldLoaded, can't remember that function name

bitter oriole Jun 19, 2019, 7:34 AM

#

You did something particular to achieve this, right ?

winged badger Jun 19, 2019, 7:34 AM

#

ran the client on faster PC

bitter oriole Jun 19, 2019, 7:34 AM

#

Basically what I'm seeing is, clients only start loading when the server is completely done loading

winged badger Jun 19, 2019, 7:34 AM

#

failed to compile shaders in advance with dev version

#

i think that applies to streaming levels

#

but not for the persistent

#

no reason to wait for that one, they have to load it anyways

bitter oriole Jun 19, 2019, 7:37 AM

#

I'm actually reloading the same level right now so it's even funnier

winged badger Jun 19, 2019, 7:37 AM

#

(this is all good part guesswork now)

#

and seamless travel on my end, for all of it

bitter oriole Jun 19, 2019, 7:39 AM

#

Yeah, I need to get that working too

flint plaza Jun 19, 2019, 7:45 AM

#

My game mode's postlogin fires before its beginplay. Is this normal?

#

if yes, where should I initialize my stuff then?

bitter oriole Jun 19, 2019, 7:46 AM

#

That sounds normal

#

Which stuff do you need to intiialize ?

flint plaza Jun 19, 2019, 7:47 AM

#

like GS, so i can access its stuff

#

isn't the purpose of beginplay to get fired before anything else?

bitter oriole Jun 19, 2019, 7:48 AM

#

"fired before anything else" is a constructor

#

BeginPlay is when the actor enters the world

#

Login happens before that, for obvious reasons

#

Gamestate should probably be initialized by the game mode

flint plaza Jun 19, 2019, 7:49 AM

#

yes but need to cast and store it in a variable

#

don't want to cast it again and again

bitter oriole Jun 19, 2019, 7:50 AM

#

Need to cast what, in which class ?

flint plaza Jun 19, 2019, 7:51 AM

#

📎 1.PNG

#

this is beginplay of GM

#

I access this variable in postlogin

#

what's a better place for this?

bitter oriole Jun 19, 2019, 7:52 AM

#

You can keep it there and cast in post login if you need it in post login

#

Is it the first player connecting ? Is it a dedicated or listen server ?

flint plaza Jun 19, 2019, 7:53 AM

#

its a listen server. And yes, its the first player

bitter oriole Jun 19, 2019, 7:54 AM

#

Construction script might work, but I'm not even sure game state exists by then.

#

I'd just keep the cast tbh

#

Storing pointers to stuff is usually a recipe for problems

flint plaza Jun 19, 2019, 7:55 AM

#

so I shouldn't keep a variable for GS?

bitter oriole Jun 19, 2019, 7:56 AM

#

You shouldn't keep a variable for stuff that's always directly accessible, imho

#

Just do a "GetGSGameState" function that returns the cast of GetGameState

flint plaza Jun 19, 2019, 7:57 AM

#

got it. Thanks for the advice

quasi scroll Jun 19, 2019, 8:12 AM

#

It depends

#

Cast are expansive so don't use them too much

bitter oriole Jun 19, 2019, 8:14 AM

#

They're not nearly that expensive

#

Worry about that when performance is a problem

winged badger Jun 19, 2019, 8:25 AM

#

@flint plaza any c++ involved?

meager spade Jun 19, 2019, 9:02 AM

#

and people have this misconception casts are expensive

#

casts are only expensive if done every tick

#

or on a really fast timer

bitter oriole Jun 19, 2019, 9:03 AM

#

Many times per tick tbh

meager spade Jun 19, 2019, 9:03 AM

#

yeah

#

people make out that casting is the worst thing ever

#

FVector .Size is probably more expensive than Cast!

#

😄

flint plaza Jun 19, 2019, 9:07 AM

#

I have C++ parents if that's what you're asking @winged badger

winged badger Jun 19, 2019, 9:07 AM

#

you can override AGameModeBase::InitGameState

#

if you're determined to have it cast then cached

flint plaza Jun 19, 2019, 9:08 AM

#

but it isn't advisable?

winged badger Jun 19, 2019, 9:08 AM

#

why i overrode 2/3rds of my GM without calling Super

meager spade Jun 19, 2019, 9:09 AM

#

GameMode needs a complete overhaul

winged badger Jun 19, 2019, 9:09 AM

#

if you want to cast and cache

#

that is the place to do it

#

right after the GM inits the GS (Super call)

flint plaza Jun 19, 2019, 9:10 AM

#

Awesome! thanks

thin stratus Jun 19, 2019, 9:11 AM

#

void AHLGameMode::InitGameState()
{
    Super::InitGameState();

    HLGameState = Cast<AHLGameState>(GameState);
    if (HLGameState != NULL)
    {
        HLGameState->SetMatchTime(MatchTime);
        HLGameState->SetMatchStartTime(MatchStartTime);
        // Many more...
        HLGameState->SetBotDifficultyLevel(BotDifficultyLevel);
    }
}

#

Yus

flint plaza Jun 19, 2019, 10:00 AM

#

Okay so I have a menu level where I travel based on the user settings to a lobby map. Both the levels have the same game state but the variable data is not correct ( i think due to server travel). What's the best approach to tackle this situation?

waxen crest Jun 19, 2019, 11:47 AM

#

How do i fix unable to load module OnlineSubSystemLAN

#

I added this to default engine.ini

[OnlineSubSystem]
DefaultPlatformService=LAN

#

did i Type it wrong?

thin stratus Jun 19, 2019, 11:49 AM

#

@waxen crest I can't remember there being a LAN subsystem

#

NULL already covers lan

waxen crest Jun 19, 2019, 11:50 AM

#

Ooooh

#

Ill try

flint plaza Jun 19, 2019, 11:50 AM

#

is this the general procedure to solve my problem?
"The way I do it roughly is:

Before quitting the game, or loading a new level or whatever, in each players state, I gather all data I want to be saved about that player and put it in a single struct (including name, steam id, stats, progress, location, class etc etc) (lets call it PlayerStruct)
The server loops through each player state, gets the newly updated player struct and saves it in an array of PlayerStructs. I then save that Array of PlayerStructs to a file.
When a new level opens or a game is continued or whatever, every connected player checks their game instance (since clients only see their instance) and sends their own name and/or steamid to the server.
On the server, compare every connected players name and/or steamid with every saved index in the array of PlayerStructs from step 2. I basically get each saved player struct, one at a time, break the required info output and compare it to the current player.
If a match is found, send the data to the matching players playerstate.
Repeat from step 1 when required."

thin stratus Jun 19, 2019, 11:50 AM

#

@flint plaza Menu to Lobby is a connection to a Server / Hosting, which is a hardtravel.
Nothing will persist.

#

Well minus GI etc.

flint plaza Jun 19, 2019, 11:51 AM

#

So I should save there?

thin stratus Jun 19, 2019, 11:51 AM

#

Map to Map can be done via Seamless Travel

#

If you have data in the PS that should persist, you can use OnCopyProperties to move them over

#

As long as this is an actual ServerTravel

#

And not a Connection/Hosting or leaving

#

If you need data to persist between server connections and you don't want them to cheat, you could save the stuff in a database and use the SteamID as a unique identifier yeah

#

If cheating is not a problem then you could just use a savegame or so

flint plaza Jun 19, 2019, 11:53 AM

#

Yes I understand why my data isn't persisting

#

another question: if the GS and PS data persists, then in which situations does OnCopyPrperties come in handy?

meager spade Jun 19, 2019, 12:03 PM

#

PS and GS data does not persist

#

when you travel, it creates a new PS/GS for that level

#

thats why you use CopyProperties

#

to copy stuff over to the new state

flint plaza Jun 19, 2019, 12:06 PM

#

understood

#

thanks

thin stratus Jun 19, 2019, 12:07 PM

#

GS doesn't have a method to move over data

#

It's only for the PS

#

Controllers have a method though

#

In the GameMode -> OnSwapPlayerControllers

#

Or so

flint plaza Jun 19, 2019, 12:22 PM

#

how do you handle GS data then?

bitter oriole Jun 19, 2019, 12:24 PM

#

Handle how ?

#

Game state is the state of the game, it's not supposed to be persistent

flint plaza Jun 19, 2019, 12:26 PM

#

makes sense. I'll keep that in mind

waxen crest Jun 19, 2019, 1:34 PM

#

is there a way to properly replicate a random value so that each time it is the same as the other players?

#

using a random float in range from stream kinda works but each time i play the game the variable is the same

glass plaza Jun 19, 2019, 1:50 PM

#

If you want the stream to be different from game to game, just init the seed server side, then transfer the seed to players. But I'm curious why you want to replicate a Random call

#

Unless it's cosmetic, you should probably calculate the random interaction server side then replicate the impact of that random, not the random itself.

#

(ie. Use the Random to respawn an actor then replicate that actor's position.)

waxen crest Jun 19, 2019, 1:59 PM

#

i'll try that

#

the replicating actor position on clients

undone girder Jun 19, 2019, 1:59 PM

#

Why multiplayer works when I havent code for replication? :o

https://gyazo.com/872e655853e761b0e89117250e1d5867

Gyazo

▶ Play video

glass plaza Jun 19, 2019, 2:01 PM

#

You mean your lights? Are you turning them off server-side? Then it would make sense that Unreal has replication activated by default for lights. (But don't take me on it, can't remember for sure)

#

@waxen crest Look into having your actor's transforms replicated. It will simplify a lot for you.

waxen crest Jun 19, 2019, 2:02 PM

#

i just done that lol

#

@glass plaza Thanks!

glass plaza Jun 19, 2019, 2:03 PM

#

No probs

waxen crest Jun 19, 2019, 2:25 PM

#

@glass plaza i set the transform on server and i set it to replicate but on client it is still default value. how can i fix that?

red sand Jun 19, 2019, 2:27 PM

#

I wanna assign team to players as soon as they join the lobby, but im not sure how to do it and where to do it. Can anyone tell me howI should proceed with it?

thin stratus Jun 19, 2019, 2:29 PM

#

You can do that on PostLogin for example

glass plaza Jun 19, 2019, 2:29 PM

#

@waxen crest NetRelevancy might be incorrectly set?

waxen crest Jun 19, 2019, 2:29 PM

#

where do i set it?

#

@glass plaza do i need to make custom events?

#

ok i found out by myself

limber mortar Jun 19, 2019, 3:07 PM

#

Thanks for taking the time to read back and answer my question Cedric, highly appreciated

red sand Jun 19, 2019, 3:16 PM

#

@thin stratus but how do I keep track of how many players are in each team?

wheat eagle Jun 19, 2019, 4:11 PM

#

hey guys so I have a client (Client 1) that hosts a session and another client (Client 2) connected to his session. Client 1 is searching for a session using Find Advanced session node from the advanced sessions plugin. How can I send the session that Client 1 finds to Client 2 so he can connect to it?

grizzled stirrup Jun 19, 2019, 4:12 PM

#

@meager spade Regarding yesterday when you mentioned I should be running the time countdown timer in the GameMode and simply passing the value to the GameState to update players with (say the current elapsed of a match), does this mean I should have two CurrentTime variables, one in the gamemode that keeps track of the time being set by the timer, and one in the GameState that is replicated and set by the GameMode?

#

I remember this was the only reason I didn't have the timer in the GameMode before, to avoid duplicating properties

#

But keeping it in the GameMode does allow me to call the end game state directly, without the GameState having to say "hey the game is over!"

meager spade Jun 19, 2019, 4:15 PM

#

why two CurrentTime variables?

#

if you have a timer running every X amount of time on the gamemode, simply send it off to the gamestate the current time?

#

or something

grizzled stirrup Jun 19, 2019, 4:18 PM

#

So the GM wouldn't have a CurrentTime?

meager spade Jun 19, 2019, 4:19 PM

#

would it need one?

grizzled stirrup Jun 19, 2019, 4:19 PM

#

Well to check if time is <= 0 and end the game

meager spade Jun 19, 2019, 4:19 PM

#

i don't know how your checking for the round

#

ifg its a timer then no, if its on tick

#

then yeah

#

but i probably wouldnt be sending the current time as a replicated value

#

i would tell the clients, match is starting, this is round time, make a timer on the widget

grizzled stirrup Jun 19, 2019, 4:20 PM

#

That's why I originally had it only in the GS as it would keep track of the current time and then report when it reaches 0

meager spade Jun 19, 2019, 4:20 PM

#

then the clients simulate it

grizzled stirrup Jun 19, 2019, 4:20 PM

#

Yeah it works that way too but there's the concept of bonus time and also dilation

#

So things can get a bit out of whack

meager spade Jun 19, 2019, 4:20 PM

#

thats why you update the round time

#

and the widget checks it, finds out if its changed, then adjusts its time

#

i dunno, but i would be trying to simulate it rather than replicating a value all the time

grizzled stirrup Jun 19, 2019, 4:21 PM

#

You are right, it's a bit pointless

#

Since it changes by a constant

#

Thanks!

winged badger Jun 19, 2019, 4:21 PM

#

gamestate already replicates the server world time

#

by default

meager spade Jun 19, 2019, 4:21 PM

#

albeit a bit inaccurate 😄

winged badger Jun 19, 2019, 4:22 PM

#

who doesn't have 0 net variance these days?

grizzled stirrup Jun 19, 2019, 4:22 PM

#

That is time going up right? So I could subtract it from the total round time on a timer in the GS?

#

Will probably just replicate the initial round time like Kaos suggested

#

And then simulate locally

meager spade Jun 19, 2019, 4:22 PM

#

thats what i would personally do

grizzled stirrup Jun 19, 2019, 4:22 PM

#

Should I do the timer in the UMG widget itself?

meager spade Jun 19, 2019, 4:22 PM

#

you want to simulate as much as possible client side

#

to reduce network impact

grizzled stirrup Jun 19, 2019, 4:22 PM

#

For sure!

meager spade Jun 19, 2019, 4:23 PM

#

thing is no one is going to be like, oh my timer says 30 seconds left but the guy im playing with says 29 seconds

#

little descrepencies aint gonna matter

grizzled stirrup Jun 19, 2019, 4:23 PM

#

Yeah would only really matter if you were off and tried to defuse a bomb or something

meager spade Jun 19, 2019, 4:25 PM

#

yeah but 🤷 you would have to handle the delay between client/server and come to a nice median, i mean you can fake it by halving the ping time for a rough guestimate, but wont be accurate cause it may take 5ms from client to server but 8ms from server to client

grizzled stirrup Jun 19, 2019, 4:25 PM

#

ah yeah true I can do that just to make it slightly more in touch

#

Would you then decrement the timer inside the widget itself yeah?

#

After receiving the delegate

meager spade Jun 19, 2019, 4:26 PM

#

wherever really

grizzled stirrup Jun 19, 2019, 4:26 PM

#

Of the round time

#

Ok thanks!

meager spade Jun 19, 2019, 4:26 PM

#

could do it in GameInstance if ya really like

#

lol

#

doesn't matter

grizzled stirrup Jun 19, 2019, 4:26 PM

#

haha perfect 😄

#

That's a good point about the ping different either side btw

#

Hadn't considered it

#

Was already offsetting impact results like hitmarker by the client ping

#

But only one way, not round trip

#

So if his ping was greater than the standard offline delay before hitmarker, then he'd send the RPC instantly

#

(I offset the hitmarkers by a short delay like 0.15ms just to make it stand out from impacts and give the impression of some travel time)

#

So knowing that the time to and from server can be different, is the ping returned from the playerstate the delay to the server from the client?

meager spade Jun 19, 2019, 4:29 PM

#

i think its round trip

#

averaged

#

but i cant remember

grizzled stirrup Jun 19, 2019, 4:29 PM

#

Ok that works great then

#

So it's gonna be fairly close to the real result

#

Instead of a lopsided one way result

#

Good to know!

#

Sorry last thing, if I do simulate time locally on the client, can I simply keep the OnRep "CurrentTime" property in GS (Could be renamed to NewRoundTime) but only update it once per round instead of once per second?

#

It'll only replicate when changed anyway right so I'm still being much more efficient by updating it once per round and then simulating locally

#

Alternatively I guess I could replace it with a single ClientRPC that gets run at the start of each round, would either option be comparable? @meager spade

harsh lintel Jun 19, 2019, 5:15 PM

#

when you bind an event in a "run on server" rpc, is that event "run on server" too? or do I have to tell that bound event to run another "run on server " rpc

#

📎 unknown.png

thin stratus Jun 19, 2019, 5:24 PM

#

@red sand With an array of PlayerControllers for example

#

One for each team

#

Or, you could go one step further, if you like it nice and clean, you can create a TeamState based on AInfo (actor)

#

And mark it similar to how the PlayerState works

#

And create one per team

wheat eagle Jun 19, 2019, 5:50 PM

#

hey guys so I have a client (Client 1) that hosts a session and another client (Client 2) connected to his session. Client 1 is searching for a session using Find Advanced session node from the advanced sessions plugin. How can I send the session that Client 1 finds to Client 2 so he can connect to it?

twin juniper Jun 19, 2019, 5:56 PM

#

@wheat eagle I believe through IP or Steam. I also need help with this.

#

@wheat eagle If you figure out how to do it, can you help me with it. I can help with other things in return.

wheat eagle Jun 19, 2019, 5:59 PM

#

I've been struggling with it for some time. Tried sending the bp session result as a parameter or replicating it and i had no success..

#

Client 2 will always have it set as null

winged badger Jun 19, 2019, 6:00 PM

#

if client 1 hosts client 1 creates a session

#

and client 2 uses find session

#

doesn't have it sent over by client1

wheat eagle Jun 19, 2019, 6:04 PM

#

@winged badger I'm trying to make a party system. Initially Client 1 and Client 2 are in a session (the party) , Client 1 hosting it. Client 1 then searches for a game (another session) and when he finds it, I want them to send the session to Client 2 so the whole party enters the match

sharp pagoda Jun 19, 2019, 6:06 PM

#

@wheat eagle I would use beacons for that, not sessions.

#

Whole list of resources related to beacons pinned in this channel

fervent spindle Jun 19, 2019, 7:03 PM

#

this is probably the most common problem here, but i'll try anyway, i'm having an issue where an action (line trace to player, reduce health of hit actor by float) happens from Client 1 to Client 2 but not from Client 2 to Client 1

winged badger Jun 19, 2019, 7:07 PM

#

and which of those clients is actually a host, take it client 1 is listen server?

fervent spindle Jun 19, 2019, 7:07 PM

#

uh... yes that is correct

#

i assume i completely forgot a part

winged badger Jun 19, 2019, 7:07 PM

#

so client 1 has authority over everything

fervent spindle Jun 19, 2019, 7:08 PM

#

i see

winged badger Jun 19, 2019, 7:08 PM

#

client 2 does shit only locally, unless he sends a Server RPC

#

telling the server "hey i did this"

#

then server can verify, or just execute what client 2 told him to do

#

and then it propagates to all clients

fervent spindle Jun 19, 2019, 7:09 PM

#

i see, makes sense

#

i'll go read up on this now :D

#

thanks for the heads up

winged badger Jun 19, 2019, 7:09 PM

#

pinned resources

#

find multiplayer compendiom

#

read that

fervent spindle Jun 19, 2019, 7:10 PM

#

thanks for the heads up again :P

waxen crest Jun 19, 2019, 7:12 PM

#

is there a way to set session name with blueprints?

timber tree Jun 19, 2019, 8:31 PM

#

My multiplayer server build consumes 260 mb ram, is it too much ??

harsh lintel Jun 19, 2019, 8:36 PM

#

I have a "run on server" rpc on a widget blueprint with dedicated server enabled, when I print a string it says the origin is the client, is this expected behavior?

cedar finch Jun 19, 2019, 8:46 PM

#

I'm trying to get a lunge attack animation to work but I read somewhere that in multiplayer games you can't use root animations or something? So what do I do if I want to make an enemy lunge with his animation? Do I move him in blueprint manually? That seems like a lot of tweaking and probably not looking right.

copper mango Jun 19, 2019, 8:51 PM

#

@harsh lintel doesn’t that just run if authority? That might make sense why since widgets won’t be created on the server and the client’s the authority for the widget

#

@cedar finch if it’s a server controlled enemy only, then root motion should be fine

#

You only run into problems if both the autonomous proxy and server are playing root motion animation, because that’s hard to synchronize properly

#

If it’s just AI characters that would be simulated proxies on the clients then it should be fine

cedar finch Jun 19, 2019, 8:54 PM

#

Oh ok. So I'm good. I just don't know what i'm doing then lol. https://i.gyazo.com/88b5a50238a6a90b54e4b03e7f8e1ea1.gif

copper mango Jun 19, 2019, 8:55 PM

#

That looks like you need to check “enable root motion” on the animation

#

Or I think it’s “extract root motion”

#

If that’s the skeleton army content those animations don’t have root motion extracted by default

#

You have to extract and do “Anim first pose” because ref pose will put the skeleton in the ground haha

#

This is in the animation itself, not the montage

#

Also the other thing potentially is in the animation blueprint make sure you have it set to allow root motion for montages

#

The other question is how you’re replicating the montages

#

I’m using GAS so that handles that part for me

harsh lintel Jun 19, 2019, 9:03 PM

#

so if the client is the authority of the widget and I want to do stuff on the server triggered by a widget button I'd have to create an empty blueprint (or an actor idk) and call that blueprint's event from the widget?

cedar finch Jun 19, 2019, 9:17 PM

#

@copper mango What is GAS? Also I did the AnimBP setting for Allow root motion for montages as well as checking the root motion box in the animation. Still nothing. I don't think this is the skeleton army model. Its just a standalone character. https://i.gyazo.com/2ad2dd4a347d519dc166b6cfc1eaec84.png

sharp pagoda Jun 19, 2019, 9:19 PM

#

@cedar finch force root lock and enable root motion from montages

#

GAS is an ability-oriented prediction and rollback framework

#

you don't need it in this case

#

@harsh lintel Tunnel your rpcs through the player controller or player for objects that you don't own/not networked

cedar finch Jun 19, 2019, 9:24 PM

#

@sharp pagoda Like this? https://i.gyazo.com/ba7c0358edbae9aba5db62287d526a18.png https://i.gyazo.com/7cf48fb0ccadd8d3af04bc7a457f5cc3.png

sharp pagoda Jun 19, 2019, 9:25 PM

#

yes

cedar finch Jun 19, 2019, 9:35 PM

#

Hmmm I gotta be doing something wrong or I just don't have a proper root bone. https://i.gyazo.com/3472ba2d17372ab5d9b1a1aebfd14304.png

sharp pagoda Jun 19, 2019, 9:36 PM

#

you should be using the epic skeleton with the root at the feet

📎 unknown.png

cedar finch Jun 19, 2019, 9:38 PM

#

Yea I don't have that root. I just bought the pack off the marketplace and it came this way. 😦

harsh lintel Jun 19, 2019, 10:03 PM

#

thanks for the answers @sharp pagoda @copper mango

#

anyone knows if it's okay to allow account creation on the game client or should I do it through a website? I can't really find an answer to this, most games I've playedf create accounts on a website, at least that's what I remember

waxen crest Jun 19, 2019, 10:13 PM

#

i made two branches in my mltiplayer game. the first one checks if the player is overlapping a cylinder and the second one looks if the player has been already warned. if the player is not overlapping the cylinder and hasnt been warned then the game attaches a widget that has text(the warning). why in my multiplayer game when the host or client leaves the cylinder all of the players get the widget?

copper mango Jun 19, 2019, 10:14 PM

#

You could but it’s probably easier to setup the account creation flow on a website @harsh lintel

#

Then your client just needs to be able to securely login and that’s it

grizzled stirrup Jun 19, 2019, 10:16 PM

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Is the correct way to override a client RPC like so? virtual void ClientDoSomething_Implementation() override;

sharp pagoda Jun 19, 2019, 10:16 PM

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@waxen crest have the cylinder send a message to the overlapping player, which internally determines if they've been warned and handles the widget themselves.

waxen crest Jun 19, 2019, 10:16 PM

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ok ill try

sharp pagoda Jun 19, 2019, 10:17 PM

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yes @grizzled stirrup

grizzled stirrup Jun 19, 2019, 10:17 PM

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Thanks

harsh lintel Jun 19, 2019, 10:21 PM

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yeah I forgot it wasn't that simple... Ill just set up a simple registration on the client and remove it when I feel like making the website

waxen crest Jun 19, 2019, 10:23 PM

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@sharp pagoda in the cylinder I got all actors of class, ina for each loop set their IsOverlapping Bool withe the is overlaping function

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*and a

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the same thing still happens

winged badger Jun 19, 2019, 10:28 PM

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so, i am currently doing some PIE tests, and my breakpoints hits BeginPlay on PlayerState twice, they have the same name, ROLE_Authority, and controller with the same name. The only difference i can spot is that one is RF_Transactional and other RF_Transient and RF_Transactional

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i started play with 1 player

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yet, the RPCs are flying all over the place and this situation, not surprisingly, leads to eventual crash

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only one of those PlayerState's PC passes IsLocalController check

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anyone ever experienced something like this, it seems crazy?

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nevermind

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someone accidentally checked the dedicated server flag

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(for the first time in years)

fleet raven Jun 19, 2019, 10:34 PM

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wait why would the dedicated server break your game tho

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it works just like a normal dedicated server

winged badger Jun 19, 2019, 10:34 PM

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i still don't understand how the above happened

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but been at weird locals snapshots for 2 hours now

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explains the 2 breakpoints, not why both had Role_Authority tho

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(I keep the watch window open with most common ways to get a Role from an Actor, ActorComponent, via Outer, Owner... etc)

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saves a ton of time figuring out if breakpoint hit on server or client

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and to answer a question why, its a setup level, and i had the PlayerStates attached to Pawn spawn some WidgetComponents

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dedi crashed dereferencing one of those

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well, widget inside one of those

waxen crest Jun 19, 2019, 10:58 PM

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How can i make only the player that left the cylinder get the widget, not all of them?

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i dont have any ideas anymore

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please

winged badger Jun 19, 2019, 11:04 PM

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you'll have to explain your problem better then that

waxen crest Jun 19, 2019, 11:06 PM

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I have a cylinder that overlaps everything. kinda like a fortnite storm. i tried to make it so everytime a player exits its collision(is in the unsafe zone) the player gets a widget with a warning that they are in an unsafe zone. however, no matter what i try i cant make it work on multiplayer, only singleplayer

winged badger Jun 19, 2019, 11:19 PM

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so only the human player that left the circle should see it?

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if (IsLocallyController())

waxen crest Jun 19, 2019, 11:20 PM

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I'll try that

waxen crest Jun 19, 2019, 11:46 PM

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@winged badger Thanks!!!

harsh lintel Jun 19, 2019, 11:54 PM

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game instance is like a widget class? the client is the authority?

fleet raven Jun 19, 2019, 11:56 PM

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there isn't an authority, it's not replicated

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it exists on both sides

harsh lintel Jun 20, 2019, 12:00 AM

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so I could have a variable in the server's game instance that is set by a run on server rpc?