#multiplayer | Unreal Source | Page 381

winged badger Mar 25, 2018, 1:26 PM

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instead of the game

meager spade Mar 25, 2018, 1:28 PM

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Decode: you trying to compile the engine?

burnt meteor Mar 25, 2018, 1:28 PM

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yes

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from source at github @meager spade

winged badger Mar 25, 2018, 1:30 PM

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you might have better luck in #engine-source

gusty raptor Mar 25, 2018, 1:30 PM

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Hi, anyone could help me with replicating attachment/detach components?

meager spade Mar 25, 2018, 1:30 PM

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Do you need to compile the engine source code? you modifying the engine in anyway? if you are then sorry can't help, never built the engine before

thin stratus Mar 25, 2018, 1:30 PM

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@gusty raptor Call it on the Server?

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If that doesn't already work, make an OnRep Variable and Attach and Detach in that Function

burnt meteor Mar 25, 2018, 1:31 PM

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@meager spade yes i am building the engine in vs

winged badger Mar 25, 2018, 1:31 PM

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and make sure the component replicates

gusty raptor Mar 25, 2018, 1:31 PM

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@thin stratus im with c++ u mean a OnRep function?

thin stratus Mar 25, 2018, 1:31 PM

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Yeah

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Usually marking the component to replicate and just attaching it on the server is enough

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If not, then apply that attach/Detach on everyone

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There is no magic to this

burnt meteor Mar 25, 2018, 1:32 PM

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@thin stratus do u need the engine source from github to make a dedicated server?

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can anyone help me to use ue4.19 from github 😦

thin stratus Mar 25, 2018, 1:34 PM

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#engine-source

burnt meteor Mar 25, 2018, 1:34 PM

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ok

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dint know that

meager spade Mar 25, 2018, 1:35 PM

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No you dont Decode

gusty raptor Mar 25, 2018, 1:37 PM

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@thin stratus actually everything so far was crashing the engine 😃 seems like i need a little bit of magic

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im actually attaching and deataching the capsule component of character

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with all of its child components

thin stratus Mar 25, 2018, 1:38 PM

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Doubt you can do that

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The CMC needs the capsule

twin juniper Mar 25, 2018, 1:41 PM

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Um, does HasAuthority always return true if "I am" the server? I'm trying to figure out why my game keeps crashing and I think I narrowed it down to this:

if (HasAuthority())
    {
        GamemodeReference = Cast<ASaeglopurGameMode>(GetWorld()->GetAuthGameMode());

        if (GamemodeReference->IsValidLowLevel())
        GamemodeReference->ServerBroadcastPublicMessage.AddDynamic(this, &ASaeglopurPawn::OnReceivePublicChatMessage);
        else UKismetSystemLibrary::PrintString(GetWorld(), "GamemodeReference is null!", true, true, FLinearColor::Red);
    }

gusty raptor Mar 25, 2018, 1:42 PM

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@thin stratus actually disabled it before

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it works on client okay

meager spade Mar 25, 2018, 1:45 PM

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HasAuthority() should always be true on the server

twin juniper Mar 25, 2018, 1:45 PM

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Wait I mean does it never return false on client?

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Wait hang on im tired

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Is there a chance that it may return true on client?

meager spade Mar 25, 2018, 1:45 PM

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no

twin juniper Mar 25, 2018, 1:45 PM

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jeez this is SO weird

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thanks

meager spade Mar 25, 2018, 1:46 PM

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also put a check in there

twin juniper Mar 25, 2018, 1:47 PM

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What kind of check?

meager spade Mar 25, 2018, 1:47 PM

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if (!GamemodeReference) { if (GEngine) GEngine->AddOnScreenDebugMessage(-1, 5.f, FColor::Red, TEXT("No Gamemode found")); }

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kinda thing, i just slapped that up lol

twin juniper Mar 25, 2018, 1:49 PM

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What's GEngine?

meager spade Mar 25, 2018, 1:52 PM

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Its a pointer to the Engine

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{
    GamemodeReference = Cast<ASaeglopurGameMode>(GetWorld()->GetAuthGameMode());

    if (GamemodeReference)
    {
        if (GamemodeReference->IsValidLowLevel())
            GamemodeReference->ServerBroadcastPublicMessage.AddDynamic(this, &ASaeglopurPawn::OnReceivePublicChatMessage);
    }else{
        if (GEngine) GEngine->AddOnScreenDebugMessage(-1, 5.f, FColor::Red, TEXT("No Gamemode found"));
    }
}```

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should always check to see if a pointer actually points somewhere, unless you know for sure that pointer is always going to be pointing somewhere.

twin juniper Mar 25, 2018, 1:59 PM

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Thanks!

slate veldt Mar 25, 2018, 3:44 PM

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Is it possible to have a game mode with a delayed start when using seamless travel?

winged badger Mar 25, 2018, 3:44 PM

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there is a ReadyToStart function you can override

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or something similarly named

slate veldt Mar 25, 2018, 3:50 PM

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Yeah I noticed that one, it's called ReadyToStartMatch I think,
I assumed that with bDelayedStart it ran through that virtual function and just didn't start the match, then I could call StartMatch whenever I wanted, but with seamless travel it seemed to go straight into "LoadedWorld->BeginPlay()" Line 5627 of World.cpp (4.18), which then steps into GameMode->StartPlay(), calling GameState->HandleBeginPlay(), and then into GameMode->StartMatch which I notice calls a HandleStartMatchRequest which just returns false therefore passing over the if statement and Setting the match state as in progress

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Do I need to override HandleStartMatchRequest?

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Looks like I may have to

📎 unknown.png

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I did just step through the code and it does indeed step through the ReadyToStartMatch_Implementation() but it has bDelayedStart as false (0) despite setting it to true in the constructor of my game mode. I'm guessing it's because the constructor hasn't run yet perhaps? Perhaps it will have constructed by the time it hits an override of that ReadyToStartMatch function

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Can I override it despite the fact it isn't virtual?

📎 unknown.png

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Ah, just done a quick google, turns out you have to override HandleMatchIsWaitingToStart instead (which by default calls ReadyToStartMatch() )

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Saying that, I'm going to try and override "ReadyToStartMatch" by implementing a ReadyToStartMatch_Implementation without a ReadyToStartMatch function declaration in the header, in the hope that the nature of the _Implementation ending treats this as an override

winged badger Mar 25, 2018, 4:08 PM

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its a BlueprintNativeEvent

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so you can override it in Blueprint easily

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and since it feels weird to force you into BP for this

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there is probably a function that calls the ReadyToStartMatch() and that one should be virtual

slate veldt Mar 25, 2018, 4:22 PM

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I'm a fool, I think I just found the issue, I had a timer in postinitialize components of the game mode that called start match automatically

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Just recompiling with that timer set commented out to check if bDelayedStart works as expected

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Clearly something left over from when I was taking pieces of code from Shootergame

rancid current Mar 25, 2018, 4:23 PM

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Ey guys! I would like a quick suggestion to my issue lol so finally starting to do tests on dedicated servers and sht, and ah I've got a problem with my movement component for my character, because of the lag its making the character jitter A LOT x.x honestly i still remember a long time ago this didn't use to happen when i was simulating lag haha but now it does so I would like to know what are the options to get rid of this? Im using unreal's movement component btw ^^

slate veldt Mar 25, 2018, 4:26 PM

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I've had that same issue, still have it to a certain degree but one thing that I did accidentally is replicate my characters mesh component

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make sure you aren't replicating it, otherwise the sync makes it jitter a lot

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but I'm still getting a slight bit of jitter on clients from the server too, to a much smaller degree but it still exists

rancid current Mar 25, 2018, 4:27 PM

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eh tried that too but its still just as bad ;-; really dk wtf to do with that anymore Q_Q

slate veldt Mar 25, 2018, 4:28 PM

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How extreme is it? Mine is still mainly on the same spot, but the animation can be a little jittery (haven't looked at it a lot as been working on other parts of the networking)

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When I was replicating the mesh, the character was all over the shop, flying left to right about 20 meters haha

rancid current Mar 25, 2018, 4:31 PM

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https://gyazo.com/6433d3bcee5975c83f2675f39f49ff87 this bad x.x

Gyazo

▶ Play video

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100 ping

slate veldt Mar 25, 2018, 4:36 PM

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Oh wow, I mean, it definitely shouldn't be that jittery, are you replicating the capsule component or mesh? both shouldn't be replicating

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I could see how if they are replicating their movement for example, it could cause something like this

rancid current Mar 25, 2018, 4:43 PM

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wait i went through all my stuff and disabled replication on the player meshes and now its not lagging anymore o.O but thing is not its really not being updated anymore either XD

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is that how its supposed to work? lol

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tested with 1000 ping lol no more updates the player just goes weeeeeeeeeeeeeeeeeeee lol

thin stratus Mar 25, 2018, 4:54 PM

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That looks like the Server applies a different Location and corrects you

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Usually you just have to set Replicated and ReplicateMovement to true, have a Character and a CharacterMovementComponent

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ListenServers seem to not interp the client location, but you are viewing a client anyway

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So if you still experience this, even with a new Character, it's kinda weird.
If it's only your character, then you might be setting the WalkSpeed or something only on the Client or Server

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Check that these settings are RepNotified!

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@rancid current

rancid current Mar 25, 2018, 4:58 PM

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Ey @thin stratus yep I do have Set replicated on actor on and same for replicate movement, does character movement component need to be replicated o.O?

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Thanks lots for the info tho! ^^

thin stratus Mar 25, 2018, 4:58 PM

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Don't think so, but you need to replicate changes to non replicated values

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So if you set MaxWalkSpeed, you need to do that on everyone

slate veldt Mar 25, 2018, 4:59 PM

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@winged badger Worked out what half the issue was with the bDelayedStart - because I hot reloaded when I added the bDelayedStart = true, the engine still considered the default object as the version it loaded upon editor start (bDelayedStart = false) and was overriding the current changes with what it considered default when it created the game mode actor

rancid current Mar 25, 2018, 4:59 PM

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@thin stratus Okeh I see! Thank you I will make sure everything is done as you said 😄 tyyyyyy!!

indigo nacelle Mar 25, 2018, 7:01 PM

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Dedicated Server checked in PIE produces a black window, while unchecked it works as normal. What might be the issue? :x

rough aspen Mar 25, 2018, 7:59 PM

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Hello guys, I have a very strange bug.
In my game I have two projectiles for weapons. It's exact copy of each one.
When I create a game and play, (I have listen server), server game can damage all players with all weapons, client can also damage with one weapon, but second weapon is not damaging which is strange.
With debug I've found that problem is in event "Apply Damage" it's just not firing on server player, when client tries to damage server player with second weapon while first one is working fine.
Damage is hardcoded to prevent any bugs.
Here is first version of projectile:
https://i.gyazo.com/f8d9a6b932e77d61c1368a05decee50f.png
Here is second one:
https://i.gyazo.com/fd7cef6f5ea1e7989f151ef2994c589b.png

This is a very stange bug and I don't know how to fix it. Maybe my explanation was bad and I can clarify any things.

meager spade Mar 25, 2018, 8:19 PM

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client's cant and should not be able to apply damage to anything, only servers should be able to apply damage

rough aspen Mar 25, 2018, 8:19 PM

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yeah and I've tried to do that too

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it's still not working

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even if I create my own event which calls on server and then goes to Apply Damage

meager spade Mar 25, 2018, 8:22 PM

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so you did somehting like https://blueprintue.com/blueprint/6zgkaaca/

BlueprintUE.com

anonymous

a

rough aspen Mar 25, 2018, 8:22 PM

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yes

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https://gyazo.com/bec2c4814bd8bcf60b3f5b226dcdb50f

Gyazo

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Server window, weapon 1, damage is working: https://gyazo.com/d793e7c1e8029bd5edce520c39e38d6d

Gyazo

▶ Play video

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Client window, weapon 1, damage is working: https://gyazo.com/d16eb97e48792da67ba780a340b23387

Gyazo

▶ Play video

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Server window, weapon 2, damage is NOT working: https://gyazo.com/8f0ecc9292a0d89c27e2ebadfd5248d5

Gyazo

▶ Play video

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Client window, weapon 2, damage is working: https://gyazo.com/3eefad6ba23f0688db03015eb135b686

Gyazo

▶ Play video

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projectiles for weapon 1 and weapon 2 is the same

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same code, same logic, all the difference is just the speed

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all collision is working

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just in one particular case for uknown reason event "apply damage" is not working

twin juniper Mar 26, 2018, 4:14 AM

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looks familiar. is this a game with "something roads" in the title?

rough aspen Mar 26, 2018, 9:12 AM

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nah, it's a game I'm developing for a few weeks from scratch

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name is TRITOR, and idea behind the game is fast-paced multiplayer shooter, like Quake 3, but on the cars

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Still, this bug is strange and I wasn't able to solve it, now I'm thinking to get to line trace instead of projectiles because of this bug

manic agate Mar 26, 2018, 9:17 AM

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Guys, got a question. I'm replicating some properties of an object at each Tick, but the very first times the client receives a few packets (even though the variable changes at each tick on the server). After a while (like 5-6 seconds) the changes are all sent immediately.
Why does it happen? How can I fix it?

rough aspen Mar 26, 2018, 9:18 AM

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@manic agate this is happening because network updates like 1 time per second you need to update your network data more frequently

manic agate Mar 26, 2018, 9:19 AM

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You mean update the replicated variable more frequently? If so, how can I do it more than once at each Tick of the server?

rough aspen Mar 26, 2018, 9:20 AM

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well for example look for the player state

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and find this settings https://i.gyazo.com/bb5d478fe77395897ba1be06567938b4.png

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Set Net Update Frequency like here

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for about 10 or 20

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and test it

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should fix it but keep in mind not to flood network data with garbage since you are sending data more frequently

manic agate Mar 26, 2018, 9:24 AM

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Thanks a lot! The Net Update Frequency was already set to 100, but the "Min ..." was set to 2. I changed it to look like your image and it works great!

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If in the future I'll see network problems, I'll tweak these properties 😃

rough aspen Mar 26, 2018, 9:25 AM

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you welcome 😃

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yeah if I recall correctly min is for case when network is slow and lagging so if you are testing your game on your PC server can sometime lag because of too much PC load with editor, game instances and so on

manic agate Mar 26, 2018, 9:32 AM

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Got it, thanks 😄

gusty raptor Mar 26, 2018, 9:33 AM

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Im still looking for someone who knows about attach / detach root components in c++ and replicate

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anyone knows about it?

slate veldt Mar 26, 2018, 9:34 AM

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@gusty raptor I've been working on attach/detach components in a replicated game, what's your question?

gusty raptor Mar 26, 2018, 9:35 AM

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im trying to make a physics actor work as rootcomponent and be replicated

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but whatever i try even the attachments are not being processed well

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think ill just put some code on pastebin or so

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ive tried running on client / server and tried multicast, but cant get it to work in anyway

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afaik it seems the server is putting back the components

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https://pastebin.com/YYYc3972

Pastebin

[C++] bool ASkatePawn::ServerAttachSkateboard_Validate() { re...

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this is the function that switches from character to physics root

slate veldt Mar 26, 2018, 9:42 AM

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What is "Skateboard"?

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From what you said above it's a Physics ACTOR, not component?

gusty raptor Mar 26, 2018, 9:43 AM

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ah, srry

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its a component, yeah

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its a USkeletalMeshComponent

slate veldt Mar 26, 2018, 9:46 AM

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I see, does it all work server side?

gusty raptor Mar 26, 2018, 9:47 AM

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its working serverside, but not replicated to clients

slate veldt Mar 26, 2018, 9:47 AM

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And is it only executed on the server?

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Looks to be the case by the code

gusty raptor Mar 26, 2018, 9:48 AM

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yeah, am firing ServerAttachSkateboard at server

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also tried other ways

slate veldt Mar 26, 2018, 9:49 AM

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Is the skateboard component marked as Replicate

gusty raptor Mar 26, 2018, 9:49 AM

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there's a comment on the local location add, i can actually see it change and set back by the server i quess

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its marked as replicate yeah

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but i doubt its really replicating

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actually i set it to replicate near the physics enable aswell

slate veldt Mar 26, 2018, 9:50 AM

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I notice that your attaching it then instantly detaching it

gusty raptor Mar 26, 2018, 9:50 AM

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indeed yeah

slate veldt Mar 26, 2018, 9:50 AM

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is it still a part of the actor when you detach it?

gusty raptor Mar 26, 2018, 9:51 AM

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yeah, i can still see it in world outliner, however sometimes it disappears to

slate veldt Mar 26, 2018, 9:51 AM

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Ohhhhh

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I see that you're adding the relative location to the capsule component, which is driven by the character movement generally speaking, so it always results in funny behaviour when you try and add location, I know you're setting the character movement as inactive above, but it could still be causing problems

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Why do you need to offset the capsule component?

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Could you not just make sure the skateboard is offset correctly before making it the root component?

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Then ensure the whole actor is above ground after that

gusty raptor Mar 26, 2018, 9:54 AM

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hhm, actually i rather need a way to completely disable the character move comp? (as it might influence my physics?)

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i might need the offset as i would like to use the capsule as collision aswell

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however the offset issnt my biggest concern 😛

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@slate veldt actually the hand attachment does work and is replicated well

slate veldt Mar 26, 2018, 10:07 AM

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Sorry was head deep in work, hand attachment?

gusty raptor Mar 26, 2018, 10:13 AM

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the second part (else)

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so i think actually that character.cpp is still doing something with the character :S

slate veldt Mar 26, 2018, 10:35 AM

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Sounds like it could be the case, I'm also not sure how much the engine likes you changing the base component to not be capsule, especially with the character capsule and movement

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Also, you might want to check and see if the movement component is still active on the client, seeing as you said it works on the server

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might be that the active status is not being replicated

thin stratus Mar 26, 2018, 10:57 AM

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Are there any resources on VOIP with Steam or in general?

slim holly Mar 26, 2018, 10:58 AM

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can't say I've bumped into any

thin stratus Mar 26, 2018, 10:58 AM

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Anyone then implemented it and could quickly summarize what functions to use for Start/Stop talking and Mute/Unmuting?
I think the PC had these, could it?

slim holly Mar 26, 2018, 10:59 AM

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but is steam voip hosted on game server?

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since they have their own friend voip system too

thin stratus Mar 26, 2018, 11:01 AM

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It's just ListenServer

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VR ListenServer/Client.
Just a simple system for Talking and Muting

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I do know that I can mute players via the PlayerController

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However just wondering if there is anything more to it

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Cause there are multiple functions, like StartTalking StopTalking ToggleSpeaking

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Also wondering if there is anything straight forward for PushToTalk On/Off

midnight sluice Mar 26, 2018, 11:29 AM

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Hi everyone :)
If I want to have more informations in my server browser (list of players, current map...), should I use sessions or online beacons ?

slim holly Mar 26, 2018, 11:43 AM

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iirc there's a string option for sessions to pass extra information

midnight sluice Mar 26, 2018, 11:50 AM

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ok so I just have to update it after the travel for the current map

thin stratus Mar 26, 2018, 12:18 PM

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Beacons are for something else

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Sessions can have SessionSettings in C++ (or BP Plugin)

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They usually have a Key and Value

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You can query that Key then in your search results

slim holly Mar 26, 2018, 12:35 PM

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advanced sessions plugin has that, but it's not documented

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or, at least when I last checked it

thin stratus Mar 26, 2018, 12:41 PM

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My C++ code in the wiki has it too

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SessionSettings->Set(SETTING_MAPNAME, FString("NewMap"), EOnlineDataAdvertisementType::ViaOnlineService);

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Missing the FindSession part though I jus see

thin stratus Mar 26, 2018, 4:03 PM

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So VoiceChat seems to straight forward work

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At least in Steam

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Minus the RequiresPushToTalk stuff

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As that seems to be simply ignored

halcyon abyss Mar 26, 2018, 4:13 PM

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Guys I have the weirdest issue!

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is somebody here ?

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I'd really like to share this thing and maybe get some help from you guys

hidden thorn Mar 26, 2018, 4:32 PM

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Is there a way to get the players ping? Player state has a variable for ping but I can't access it because it's private.

brittle sinew Mar 26, 2018, 4:33 PM

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Is it? The docs say it's public

hidden thorn Mar 26, 2018, 4:34 PM

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https://github.com/EpicGames/UnrealEngine/blob/8e4560b8c22b309e73ff0ce90377742c3dfe13cc/Engine/Source/Runtime/Engine/Classes/GameFramework/PlayerState.h

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I am looking at that and the only public thing is UpdatePing and Recalculate

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unless I am looking in the wrong place

brittle sinew Mar 26, 2018, 4:38 PM

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I believe GENERATED_UCLASS_BODY defaults to things under it being public.

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Have you actually tried accessing it?

hidden thorn Mar 26, 2018, 4:40 PM

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This is inside a custom PlayerState class -> https://i.imgur.com/B2GiIFR.png

Imgur

brittle sinew Mar 26, 2018, 4:41 PM

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Is that Intellisense or is it actually failing to compile?

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:p

hidden thorn Mar 26, 2018, 4:43 PM

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trying it now

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it compiled

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so GENERATED_UCLASS_BODY makes variables public by default?

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what about GENERATED_BODY

thin stratus Mar 26, 2018, 4:50 PM

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Remember to multiply the ping by 4

hidden thorn Mar 26, 2018, 5:18 PM

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Oh ok, how come though?

jolly siren Mar 26, 2018, 5:19 PM

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Because it is divided by 4 in order to fit in a smaller data structure for optimized replication

hidden thorn Mar 26, 2018, 5:21 PM

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oh ok

finite bison Mar 26, 2018, 5:53 PM

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does the playercontroller get destroyed and newly constructed on seamless travel? my guess is: no?

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ah, this doc page answers it right at the end: https://docs.unrealengine.com/en-us/Gameplay/Networking/Travelling

midnight sluice Mar 26, 2018, 6:11 PM

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Can I use the FOnlineSessionSetting::Set template with any type ? Like an array of PlayerState or an array of FUniqueNetId

thin stratus Mar 26, 2018, 6:26 PM

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Array of PlayerStates wouldn't work

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These are objects, that don't live outside of the Session

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You could pack the NetIDs into it I assume, but not sure how much information yo ucan truly store in sessionsettings

hidden thorn Mar 26, 2018, 6:44 PM

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@thin stratus You prob don't remember but a while back you told me that MaxWalkSpeed is not set to Replicate so changing that using a Server RPC will make the movement look jittery. Could you tell me again the solution of what I can do so it doesn't look jittery anymore?

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What I currently have is Client Calls->Server Update Speed->NetMulticast Method Updates MaxWalkSpeed = XX

thin stratus Mar 26, 2018, 6:52 PM

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Multicast is technically okay but won't effect people coming in relevancy range or connecting

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Try using a Repnotify float

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Set that in the server rpc

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And use the repnotify function to set the maxspeed with the float

hidden thorn Mar 26, 2018, 6:54 PM

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Ok I will try that

slim holly Mar 26, 2018, 7:37 PM

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cedric you know any resources on how to manually replicate movement?

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like, for character movement

jolly siren Mar 26, 2018, 7:58 PM

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Does anyone know if voip setup has changed in 4.19? My previous setup isn't working anymore. voip isn't working at all and there is no LogVoice messages being logged.

DefaultEngine.ini

[Core.Log]
LogVoice=verbose

[Voice]
bEnabled=true

[OnlineSubsystem]
bHasVoiceEnabled=true```

*DefaultGame.ini*
```[/Script/Engine.GameSession]
bRequiresPushToTalk=false```

thin stratus Mar 26, 2018, 8:10 PM

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I have the same

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Just set that up today

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Worked for me in 4.19 + Steam

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2 PCs

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@jolly siren

winged badger Mar 26, 2018, 8:11 PM

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any voice-related logs in OnlineSubsystem?

mild hull Mar 26, 2018, 8:11 PM

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New: Made improvements to Unreal Engine 4's native VOIP implementation. Spatialization, Distance Attenuation, Reverb, and custom effects for a player's voice can now be controlled using the UVoipTalker Scene Component. maybe that changed something?

jolly siren Mar 26, 2018, 8:11 PM

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Yeah, I know there have been improvements to voip and they fixed a bug I have been waiting for on it. That is why I'm turning it back on. Hmm okay, I'll keep digging. I'm surprised I didn't get any LogVoice in the log

thin stratus Mar 26, 2018, 8:18 PM

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The VoipTalker still requires the full setup afaik

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It's not replacing it

jolly siren Mar 26, 2018, 8:19 PM

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oh you have to set VoipTalker up in code? I'm just trying to enable default voip

thin stratus Mar 26, 2018, 8:19 PM

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No the opposite

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You don't need that

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It's an addition

jolly siren Mar 26, 2018, 8:19 PM

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ahh okay, that's what I thought

thin stratus Mar 26, 2018, 8:19 PM

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All I setup was the ini file

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Well and Muting/Unmuting

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But that's unrelated

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One thing I can't get to work is PTT

twin juniper Mar 26, 2018, 8:20 PM

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So I'm a bit curious. How safe is it to be relying on the USaveGame class for saving game data? I know there are some production games using this in ACTUAL studios for multiplayer games.

thin stratus Mar 26, 2018, 8:20 PM

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Cause even with the boolean set to true it's not doing that

twin juniper Mar 26, 2018, 8:20 PM

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I feel like it could be very bad in terms of data integrity (easily corrupted).

jolly siren Mar 26, 2018, 8:24 PM

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ahh I was expecting to see some LogVoice messages in the server logs. Looks like they are only in the client logs. It must be p2p for voip

#

That is good news at least

timid pendant Mar 26, 2018, 8:32 PM

#

Hello using the SetPlayerName function in ue4 4.19 causes this error. Line 62 is PS->SetPlayerName(PlayerName);

📎 playername.PNG

#

Full code is

#

UBaseGameInstance * GameInstance = UStaticFunctionLibrary::GetBaseGameInstance(this);
FString PlayerName = GameInstance->playerusername;
ABasePlayerState * PS = Cast<ABasePlayerState>(PlayerState);
PS->SetPlayerName(PlayerName);

#

The game just crashes when that line 62 is executed

winged badger Mar 26, 2018, 8:33 PM

#

can't access the pawn from BeginPlay on the controller

#

its not ready yet

#

Try OnPossess

timid pendant Mar 26, 2018, 8:34 PM

#

Alright thank you will try

#

It doesnt crash anymore but that setplayername function is not replicating

winged badger Mar 26, 2018, 8:39 PM

#

replicate the variable

#

not the function

timid pendant Mar 26, 2018, 8:40 PM

#

Oh okay I thought the setplayername function would do it since its replicated

winged badger Mar 26, 2018, 8:40 PM

#

i mean

#

if the name is stored locally

#

you will have to do a Server RPC to set it on server

#

after that you can let replication do the rest

#

but for that to happen you have to be ClientSide when you Get the name

#

and then RPC from there

thin stratus Mar 26, 2018, 8:41 PM

#

Are we talking about the native SetPlayerName function

#

Or some custom that you created?

timid pendant Mar 26, 2018, 8:42 PM

#

The native function in playerstate

thin stratus Mar 26, 2018, 8:42 PM

#

BP has a function there?

timid pendant Mar 26, 2018, 8:43 PM

#

playerusername = JsonObject->GetStringField("username"); and UPROPERTY(BlueprintReadOnly, Category = Player)
FString playerusername; is the variable im using

#

Im using c++ for it

#

Im assuming I can just set UPROPERTY as Replicated

winged badger Mar 26, 2018, 8:45 PM

#

if you're calling that from constructor, BeginPlay or Tick

#

it will exec on both server and client

#

so you need if (Role != ROLE_Authority) or if (Role < Role_Authority) to make sure you're getting the property Client Side

timid pendant Mar 26, 2018, 8:50 PM

#

Okay I will do this in that onpossess function

timid pendant Mar 26, 2018, 9:29 PM

#

@winged badger Hey would this be correct. I set the UFUNCTION to (Server) for this function

#

void ABasePlayerController::SetPlayerName()
{
ABasePlayerState * PS = Cast<ABasePlayerState>(PlayerState);
if (PS) {
if (Role != ROLE_Authority)
{
UBaseGameInstance * GameInstance = UStaticFunctionLibrary::GetBaseGameInstance(this);
FString PlayerName = GameInstance->playerusername;
PS->SetPlayerName(PlayerName);
}
}
}

winged badger Mar 26, 2018, 9:29 PM

#

just to make sure

#

the name is stored locally on client?

#

and that function won't do anything

timid pendant Mar 26, 2018, 9:31 PM

#

I want the name to be replicated to all players since its a multiplayer game. The *playerusername variable is recieved from a json request and saved in the basegameinstance as UPROPERTY(BlueprintReadOnly, Category = Player)
FString playerusername;

winged badger Mar 26, 2018, 9:31 PM

#

you first send the execution on Server then make sure the function doens't execute on server

#

UFUNCTION(Server, Reliable, WithValidation)
void SetPlayerName(const FString& playerName);

// in .cpp
void ABasePlayerController::SetPlayerName_Implementation(const FString& playerName)
{
    <get PlayerState and set playerName in it>
}
bool ABasePlayerController::SetPlayerName_Validate(const FString& playerName)
{
    return true;
}

#

only way to push data to the server is as a ServerRPC function argument

timid pendant Mar 26, 2018, 9:36 PM

#

Thanks so if (Role != ROLE_Authority) isnt needed right

winged badger Mar 26, 2018, 9:37 PM

#

if you called that from BeginPlay for example

#

then inside it:

#

if (Role == ROLE_AutonomousProxy) 
{
    <get name from GameInstance>
    SetPlayerName(name);
}

#

would execute only on client, would fetch the name from correct GameInstance (client's) and would call the ServerRPC to set in in PlayerState Server-Side

#

!= ROLE_Authority works for PlayerController

timid pendant Mar 26, 2018, 9:40 PM

#

Okay thanks got it and thats more convenient but the beginplay would crash for me. I will use the SetPlayerName functions

winged badger Mar 26, 2018, 9:41 PM

#

the Role check makes sense only from inside the functions that will execute on both client and server

native moth Mar 26, 2018, 9:41 PM

#

Hey guys, question here. I'm playing with using a mobilephone with ARCore as a virtual camera to help me make more realistic camera motions. I have the sessions connected and the mobilephone can sync its camera to my desktop. Now, heres my question: is it possible to render an image on my desktop and sync that back to the mobile? So I use my desktop to render high-end geometry while the phone only has an empty scene

timid pendant Mar 26, 2018, 9:43 PM

#

Alright one last question. From your code above showing how I should do the implementation and reliable part. Is the original function empty? Which is the

#

void ABasePlayerController::SetPlayerName()
{
ABasePlayerState * PS = Cast<ABasePlayerState>(PlayerState);
if (PS) {
if (Role != ROLE_Authority)
{
UBaseGameInstance * GameInstance = UStaticFunctionLibrary::GetBaseGameInstance(this);
FString PlayerName = GameInstance->playerusername;
PS->SetPlayerName(PlayerName);
}
}
}

winged badger Mar 26, 2018, 9:44 PM

#

if you are implementing a client function that calls the server RPC

#

it only needs to get the name

#

and call the RPC with name as argument

timid pendant Mar 26, 2018, 9:44 PM

#

Alright thanks man

fleet raven Mar 26, 2018, 10:15 PM

#

why does attempting to connect to a server, and failing (for example because it does not exist) reload the main menu map instead of doing nothing?

glacial hamlet Mar 27, 2018, 4:30 AM

#

because you probably connected but were immediately disconnected for whatever reason is my guess

#

or the failure is triggering a delegate that says go to default map

hidden thorn Mar 27, 2018, 6:00 AM

#

@thin stratus Hi, I set the MaxWalkSpeed using RepNotify or atleast I hope I did it right since I've never used it before.

#


//.h
UPROPERTY(EditAnywhere, ReplicatedUsing = OnRep_MovementSpeed, BlueprintReadOnly, Category = PlayerMovement)
float MovingForwBack;

UFUNCTION()
void OnRep_MovementSpeed();

//.cpp
void ARPGPlayer::GetLifetimeReplicatedProps(TArray<FLifetimeProperty>& OutLifetimeProps) const
{
    Super::GetLifetimeReplicatedProps(OutLifetimeProps);

    DOREPLIFETIME(ARPGPlayer, MovingForwBack); 
}

void ARPGPlayer::Tick(float DeltaTime)
{
    Super::Tick(DeltaTime); // Call parent class tick function  

    if (HasAuthority())
    {
        MovingForwBack += MovementScale;
        OnRep_MovementSpeed();
    }
}

void ARPGPlayer::OnRep_MovementSpeed()
{
    UE_LOG(LogTemp, Warning, TEXT("OnRep_MovementSpeed"));
    GetCharacterMovement()->MaxWalkSpeed = MovingForwBack;
}

#

And I have the same issue as if I would use NetMulticast

#

That is using NetMulticast and it looks the same using RepNotify

fossil spoke Mar 27, 2018, 6:03 AM

#

Whats the issue @hidden thorn ?

#

Ced is probably asleep at the moment.

hidden thorn Mar 27, 2018, 6:04 AM

#

I was going to show a quick video but I have to record it, the issue is that the movement is jittery on clients.

#

But just the animation

fossil spoke Mar 27, 2018, 6:08 AM

#

Have you tried applying the Movement adjustment locally as well? The client will get the Authority value once it replicates but it assumes that its going to be the correct value anyway.

heavy marlin Mar 27, 2018, 6:09 AM

#

i'd wang it in an RPC and use a timestamp so you're only applying relevant adjustments

hidden thorn Mar 27, 2018, 6:11 AM

#

@fossil spoke So you're saying to call GetCharacterMovement()->MaxWalkSpeed = MovingForwBack; locally, outside HasAuthority()?

fossil spoke Mar 27, 2018, 6:12 AM

#

Yes, the Server will give the client the correct value once it replicates, so any discrepancies will be rectified then, as George suggested, also using Timestamped values will help as well.

heavy marlin Mar 27, 2018, 6:13 AM

#

someone posted this the other day, its worth looking at: https://github.com/Acren/ue4-client-prediction

GitHub

Acren/ue4-client-prediction

ue4-client-prediction - UE4 Client Prediction Experiment

hidden thorn Mar 27, 2018, 6:13 AM

#

@heavy marlin So have OnRep_MovementSpeed inside a Server RPC and apply TimeStamp, I will prob have to look into TimeStamp as I am not sure what it is used for.

#

And here is the video of the outcome: https://www.youtube.com/watch?v=2AiQ536dC1s&feature=youtu.be

YouTube

Boowman

Desktop 2018 03 27 07 08 10 02 - YouTube

▶ Play video

#

The server moving is fine but when the client movs I have the issue, I will look at that @heavy marlin thanks.

heavy marlin Mar 27, 2018, 6:14 AM

#

wait whats the issue?

#

i didnt see any issue in that video :\

fossil spoke Mar 27, 2018, 6:15 AM

#

Neither do i?

#

There is no "jitter" at all

#

Seems fine

heavy marlin Mar 27, 2018, 6:16 AM

#

the feet slide a bit but thats an animation issue i think

#

on that note, i solve that by looking at each one and storing asset metadata called "MovementSpeed" which is a units moved per second

#

which i then use as a multiplier in my animation BP

hidden thorn Mar 27, 2018, 6:19 AM

#

Other than the animation not being synced with the speed, if you look at the feet of the client on the server window and then look at the server character on the clients window

#

you can on the server the clients feet are moving so fast that they are a bit blurry

fossil spoke Mar 27, 2018, 6:21 AM

#

Ok i see it now.

heavy marlin Mar 27, 2018, 6:22 AM

#

it must be like a magic picture, i dont see it

hidden thorn Mar 27, 2018, 6:23 AM

#

Only the clients have that, when I move around as the player I don't feel anything it's all normal but just the animation looks weird.

heavy marlin Mar 27, 2018, 6:23 AM

#

but what you're describing could be due to flickering values

#

you need to be lerpier about it

fossil spoke Mar 27, 2018, 6:23 AM

#

I had to watch it on Youtube to get the first part of the video to render in high quality to see it

#

@hidden thorn Does it do this when you use an Dedicated Server?

#

Im assuming your game will be with Dedi Servers?

hidden thorn Mar 27, 2018, 6:24 AM

#

Right now it's a ListenServer

#

And yeah it will be at some point

fossil spoke Mar 27, 2018, 6:24 AM

#

If so your better off checking out the Client to Client relationship since the Dedi Server wont even care about Anims

hidden thorn Mar 27, 2018, 6:24 AM

#

But prob not this version as it is a prototype

#

So ListenServer care about animations?

#

And what exactly you mean by "wont even care about Anims"

fossil spoke Mar 27, 2018, 6:31 AM

#

Well an Dedicated Server has no visual representation

#

If all Clients see an smooth animation and it remains synchronized with the Server, no body will care if the Server may have jittery animations because no body will see the Server because the Server has no visual representation

heavy marlin Mar 27, 2018, 6:33 AM

#

what you need (but dont have) is a little line graph plotting the values

#

if they're all spikey you know something is off

#

actually you could debug it with this: https://forums.unrealengine.com/unreal-engine/marketplace/86597-kantan-charts-free-umg-chart-graph-plugin

Kantan Charts - Free UMG chart/graph plugin - Unreal Engi...

All Things Related to the Unreal Engine Marketplace. Discuss Marketplace Offerings, Request New Content, Promote Your Work.

#

also yeah i wouldnt care what the server sees visually

fossil spoke Mar 27, 2018, 6:35 AM

#

Pretty sure the Debug set of functions has an histogram

#

Never used it though.

heavy marlin Mar 27, 2018, 6:35 AM

#

yeah me either

hidden thorn Mar 27, 2018, 6:38 AM

#

@fossil spoke Yeah just had a look with 1 Server, 2 Clients and the Jittery movement only happens on the Server

fossil spoke Mar 27, 2018, 6:39 AM

#

Ok well considering its an prototype, id ignore it and move forward.

#

Its an small detail that may or maynot become an issue, not worth the time when its just an prototype.

hidden thorn Mar 27, 2018, 6:41 AM

#

I will most likely do that, thanks for the help

#

@heavy marlin @fossil spoke

fossil spoke Mar 27, 2018, 6:43 AM

#

Good luck

copper sparrow Mar 27, 2018, 7:40 AM

#

When we must use dedicatedserver? or why we must use dedicated server?

thin stratus Mar 27, 2018, 7:41 AM

#

When you want to have a server that runs without a client being connected.

#

And if you want to host server logic away from the clients to deny cheating

twin juniper Mar 27, 2018, 8:25 AM

#

Hey guys! I'm implementing my own character movement, and I was wondering what the standard practice is for the client to be able to move around on the serverside. Should I just be using simple RPCs to send desired acceleration to the server?

slim holly Mar 27, 2018, 8:26 AM

#

I doubt physics sim would be very accurate approach

glacial hamlet Mar 27, 2018, 8:26 AM

#

is there a reason not to use character movement component and create a custom mode?

slim holly Mar 27, 2018, 8:26 AM

#

1000 reasons to create your own character movement

twin juniper Mar 27, 2018, 8:26 AM

#

I guess I just want control from the bottom up

slim holly Mar 27, 2018, 8:27 AM

#

I was just looking into this earlier

#

and found this: http://www.gabrielgambetta.com/entity-interpolation.html

twin juniper Mar 27, 2018, 8:27 AM

#

I don't feel comfortable using complex assets that are already set up. I'd rather understand this and do it myself

#

oh

#

Okay I'm gonna read this

slim holly Mar 27, 2018, 8:27 AM

#

stare at the first graph a while, it will start to make sense eventually

twin juniper Mar 27, 2018, 8:28 AM

#

Okay, thanks!

glacial hamlet Mar 27, 2018, 8:32 AM

#

you can create your own implementation of a "mode" and leverage a lot of existing architectural patterns such as prediction and correction, again, it all comes down to your desired movement type.

slim holly Mar 27, 2018, 8:33 AM

#

it's all in one class

#

the networking that is

grand kestrel Mar 27, 2018, 9:23 AM

#

There's not many people who need a custom character movement made from scratch. Prediction is a complex topic and when learning it should start with something far simpler than a character

slim holly Mar 27, 2018, 9:24 AM

#

well, it's a moving object as any other

copper sparrow Mar 27, 2018, 9:40 AM

#

@thin stratus Thanks.

thin stratus Mar 27, 2018, 9:42 AM

#

Everyone who moves a non Character needs a custom MC

#

Cause only the CMC has the Prediction in it

#

And even that sucks at it, cause the Server doesn't interp the Client

#

Means on a ListenServer, when having a Highping to a client, the client character snaps

#

gg

#

Well let me reword that: Everyone who moves a non Character and wants interpolation etc. needs a custom MC

slim holly Mar 27, 2018, 9:46 AM

#

yup, I couldn't get default CMC to do doublejump without spazzing out

west nymph Mar 27, 2018, 10:01 AM

#

Hey guys, sorry for bothering but im kinda stuck on this error havent been able to figure it out. I am currently using VS 2015 v3 and UE4.19 the error apears once I try to generate visual studio files, I am folowing a tutorial for dedicated servers.

The error codes;

error CS0122: 'UnrealBuildTool.UEBuildBinaryConfiguration' is inaccessible due to its protection level
error CS0051: Inconsistent accessibility: parameter type 'ref System.Collections.Generic.List<UnrealBuildTool.UEBuildBinaryConfiguration>' is less accessible than method 'projectkaaServerTarget.SetupBinaries(UnrealBuildTool.TargetInfo, ref System.Collections.Generic.List<UnrealBuildTool.UEBuildBinaryConfiguration>, ref System.Collections.Generic.List<string>)'

If anyone could point me in the right direction I would be quite happy 😃 thanks in advance

thin stratus Mar 27, 2018, 10:45 AM

#

The Target files have to be a bit different

#

Check how the Editor Target file looks like

west nymph Mar 27, 2018, 10:46 AM

#

📎 unknown.png

thin stratus Mar 27, 2018, 10:46 AM

#

Yeah and show me the Server one

west nymph Mar 27, 2018, 10:47 AM

#

server

📎 server.JPG

thin stratus Mar 27, 2018, 10:47 AM

#

You see the difference?

#

Or should I point it out?

west nymph Mar 27, 2018, 10:49 AM

#

ehh. sorry i dont see the difference, but if you would let me know it would help me a lot. Just started messing around with all this, wanted to tr and complete this tutorial

thin stratus Mar 27, 2018, 10:49 AM

#

Simply said, make them equal

#

The public projectkaaServerTarget(TargetInfo target)

#

Needs the : base(Target)

#

The SetupBinaries function isn't a thing in 4.19 anymore

#

At least not like this

#

So you need to grab the OutExtraModuleNames... and put it below bUsesSteam

#

And remove the Out in front of it

#

And then get rid of Everything below TargetRules Interface

west nymph Mar 27, 2018, 10:51 AM

#

Thank you so much!

west nymph Mar 27, 2018, 12:21 PM

#

Hey after fixing the issue above, I ran into another problem;

"ERROR: UnrealBuildTool Exception: Not expecting project Unreal Projects\projectkaa\Intermediate\ProjectFiles\projectkaa.vcxproj to already have a target rules of with configuration name Server (projectkaaTarget) while trying to add: projectkaaServerTarget"

I read online that I should delete the Intermediate file and generate visual studio files however It only generates the build file inside it and shoots of another error. I was thinking would it help if I deleted the Intermediate file and build it inside from VS?

Again sorry to bother, I am dabbling in all of this trying to figure it out. Thanks!

west nymph Mar 27, 2018, 1:40 PM

#

The re-building didnt work. Hmm

thin stratus Mar 27, 2018, 2:49 PM

#

You can delete Intermediate and Binaries, rightclick the UPROJECT file, hit REGENERATE VISUAL STUDIO PROJECT FILES and open the sln file

#

Then in VS (opens through the sln file), make sure you select either DevelopmentEditor or DevelopmentServer and rightclick you project in the solution browser

#

Then hit "Build"

#

@west nymph

west nymph Mar 27, 2018, 2:58 PM

#

@thin stratus I can only see Generate Visual Studio Project Files and Switch Unreal Engine Version

#

is it the same thing generate and regenerate ?

thin stratus Mar 27, 2018, 3:10 PM

#

Ah yeah

#

Generate then

west nymph Mar 27, 2018, 3:13 PM

#

I get the same error, when I check the files, I can see Intermediate file has been generated and In it there is only Build file.

#

Im curious why it gives the same error when this doesnt even exist in the file "Intermediate\ProjectFiles\projectkaa.vcx"

#

could it be trying to generate it from a different location ?

west nymph Mar 27, 2018, 7:03 PM

#

Damn.. still not working I am not sure what to do from this point

thin stratus Mar 27, 2018, 7:04 PM

#

Well the error states that you have the projectkaaServerTarget already

#

Means you either have the file twice

#

Or one of the other targets has the same class name

west nymph Mar 27, 2018, 7:10 PM

#

I created it manually following the guide

#

the prokectKaaServerTarget

#

there isnt another copy of it in the files however

thin stratus Mar 27, 2018, 7:12 PM

#

Not even inside of one of the files ?

#

Maybe something that you renamed by mistake?

#

Maybe some where else in the project foldesr of /Source?

west nymph Mar 27, 2018, 7:13 PM

#

I added projectkaaServerTarget manually into the source folder next to target.cs

#

that step was correct right?

thin stratus Mar 27, 2018, 7:14 PM

#

Should be yes

#

Otherwise move it away again for now

west nymph Mar 27, 2018, 7:29 PM

#

when i move the ServerTarget out of the source file

#

it is able to generate the vs project files

#

but it hasnt generated the ServerTarger by itself

thin stratus Mar 27, 2018, 7:34 PM

#

Well it won't

#

have you tried compiling for DevelopmentServer?

west nymph Mar 27, 2018, 7:35 PM

#

i did that before all this

thin stratus Mar 27, 2018, 7:36 PM

#

?

west nymph Mar 27, 2018, 7:37 PM

#

i chaned to devServer and hit build before creating the servertarget

thin stratus Mar 27, 2018, 7:37 PM

#

The process is:

Get Source of UE4 4.x
Change the Engine Version of your Project to that Source Version
Add the ServerTarget file to your project
Build for DevServer

west nymph Mar 27, 2018, 7:41 PM

#

so is it a possibilie i messed the project up by doing it wrong by building the devserver on vs

thin stratus Mar 27, 2018, 7:43 PM

#

Shouldn't

#

You can't build DevServer for your project before you set that file up

#

Are you sure that you are building your project and not the engine?

west nymph Mar 27, 2018, 7:46 PM

#

i think i understand i built the engine in devserver then tried to add servertarget

#

so basicaly i didnt build the project with devserver

lament kettle Mar 27, 2018, 7:56 PM

#

Is there a way to pass mouse position from the client, without passing a variable using a RPC command?

#

📎 unknown.png

#

The server can not obtain the mouse position of the client.

thin stratus Mar 27, 2018, 8:04 PM

#

No, you have to pass a variable to the Server

#

At least if you want that mouse Rotation

lament kettle Mar 27, 2018, 8:07 PM

#

Ah thanks.

#

📎 unknown.png

#

Is there anything wrong with this?

#

I want to handle all inputs on the controller, and then set variables on the pawn if needed.

#

In this case, for jumping, I call an RPC.

thin stratus Mar 27, 2018, 8:09 PM

#

Well despite that not being a good way of handling input, yes

#

PlayerController should only get input that is not tied to a pawn

#

Like opening UI and what not

lament kettle Mar 27, 2018, 8:09 PM

#

The reason why the inputs have to be on the controller, is because I plan to use differnt types of character types.

thin stratus Mar 27, 2018, 8:09 PM

#

Your character should handle jumping itself

lament kettle Mar 27, 2018, 8:09 PM

#

I plan to use an interface.

#

Yes, the character does that, via a variable.

thin stratus Mar 27, 2018, 8:09 PM

#

Different Characters can implement the Input themselves

#

It makes zero sense to use an interface for that

lament kettle Mar 27, 2018, 8:10 PM

#

Nah, interfaces > one by one, inplementing the same code.

#

ATM i'm not using them, but I plan to do so soon enough.

thin stratus Mar 27, 2018, 8:10 PM

#

Welp, I'm just telling you it's not the proper way

lament kettle Mar 27, 2018, 8:10 PM

#

Why?

thin stratus Mar 27, 2018, 8:11 PM

#

Cause the Pawns/Characters are meant to hold the logic.

lament kettle Mar 27, 2018, 8:11 PM

#

So, you want me to shift all player inputs, to the pawn?

thin stratus Mar 27, 2018, 8:11 PM

#

No, I want you to shift the input that affects the pawn into the pawn

#

Your Pawn jumps, so let him implement the jumping

lament kettle Mar 27, 2018, 8:11 PM

#

Yeah,. and he is..

#

All I do is call the RPC.

thin stratus Mar 27, 2018, 8:12 PM

#

You are grabbing the input in the Controller

#

And then sending it to the Pawn

#

So no

#

He's not

#

Put the Jump input into the Pawn/Character

#

And depending on what you are doing with that boolean, you might want to set it locally too

#

Cause otherwise the local player has to wait for that boolean to replicate

#

Giving him a slight feeling of input lag

lament kettle Mar 27, 2018, 8:13 PM

#

📎 unknown.png

#

like this?

thin stratus Mar 27, 2018, 8:13 PM

#

Better

#

If you have different input in different characters (like different types)

#

Then create a Base Class

#

And make children

#

And override the behavior in teh children

lament kettle Mar 27, 2018, 8:14 PM

#

Ah, I see what you mean.

#

You mean inheritence.

thin stratus Mar 27, 2018, 8:14 PM

#

The PlayerController should only hold the non pawn relevant input

#

Yes

lament kettle Mar 27, 2018, 8:14 PM

#

Should I shift my player rotation methods to the pawn then? (I dont know if you remember)

thin stratus Mar 27, 2018, 8:14 PM

#

E.g. for PlayerController Input: Open Inventory, Open MenuUI, etc.

#

Well if they only affect the Pawn

#

Yeah

lament kettle Mar 27, 2018, 8:14 PM

#

Ah, I see.

#

Alright.

thin stratus Mar 27, 2018, 8:15 PM

#

Despite that, as I said

#

Do the Boolean on the Client too

#

Input -> SwitchHasAuthority

-> Authority -> Set Boolean
-> Remote -> Set Boolean -> ServerRPC -> Set Boolean

lament kettle Mar 27, 2018, 8:18 PM

#

📎 unknown.png

#

Better?

thin stratus Mar 27, 2018, 8:19 PM

#

Yus

twin juniper Mar 27, 2018, 8:51 PM

#

Hey Cedric

#

I'm having an issue with this function "TermBody" when I update my Instances it just seems to lag the shit out of my server when I call it on a multicast. However, I'm wondering if I can call Multicast functions asynchronously

#

Do you know if this is possible?

#

Because it seems to be causing some MAJOR problems

#

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

Imgur

#

I get these hitches

#

whenever I call UInstancedStaticMeshComponent::UpdateInstanceTransform()

#

If you don't know that's fine

torpid girder Mar 27, 2018, 9:11 PM

#

what is the best way to replicate aim offset?

hasty adder Mar 27, 2018, 9:24 PM

#

@torpid girder off hand I can say you typically use an animation blue print value for pitch right. I find setting this on the input of it != 0 be best for me anywho

lament kettle Mar 27, 2018, 9:24 PM

#

I agree.

#

📎 unknown.png

#

So I improved my aim rotation code a bit....

#

What do you think?

hasty adder Mar 27, 2018, 9:26 PM

#

Hmm i couldn’t speak to performance. But it’s on tick many frown on that 😉 one sec I’ll post what I use

lament kettle Mar 27, 2018, 9:27 PM

#

Is there an event function when the mouse moves?

#

oh crap, there is!

#

Mouse X, Mouse Y

torpid girder Mar 27, 2018, 9:28 PM

#

i never thought about doing the replication in the animation blueprint

lament kettle Mar 27, 2018, 9:29 PM

#

I wouldn't either.

#

ABP should only obtain, not have setters...

#

At least thats what I think.

torpid girder Mar 27, 2018, 9:30 PM

#

i had some clunking code that made some weird suffering effects

hasty adder Mar 27, 2018, 9:35 PM

#

📎 2018-03-27_17-33-58.png

lament kettle Mar 27, 2018, 9:36 PM

#

Whats this?

#

@hasty adder

hasty adder Mar 27, 2018, 9:51 PM

#

That’s my mouse events there’s bunch a extra junk in there. But it’s where I pass my pitch to server if it’s not zero to update everyone else

#

Oh wait lol excuse me I have the flu

#

That’s my key inputs

#

📎 image.png

#

Was wondering why my dash books were there hah

#

Bools

wary willow Mar 27, 2018, 10:08 PM

#

@hasty adder hmm

#

Just wondering, where is the BPI coming from for your Inputs?

hasty adder Mar 27, 2018, 10:11 PM

#

They’re actually coming from player controller. It’s key rebind system.

wary willow Mar 27, 2018, 10:15 PM

#

Ah, interesting

gloomy tiger Mar 27, 2018, 10:34 PM

#

Hey there! Yet another question.

I've just built a Server for our game and when running the .exe, this is the output:

#

📎 unknown.png

#

Pure, shiny blank terminal.

#

Ideas?

hasty adder Mar 27, 2018, 10:48 PM

#

Shipping version?

hasty adder Mar 27, 2018, 11:16 PM

#

assuming yes youll need to set your server build target to allow logging to display for shipping

#

bUseLoggingInShipping = true;

#

@gloomy tiger this is somewhere after your add extra module that’s your game

gloomy tiger Mar 27, 2018, 11:17 PM

#

Shipping Version, @hasty adder. Sorry.

hasty adder Mar 27, 2018, 11:18 PM

#

📎 image.png

#

Should then show the console log like t did in non shipping versions

#

I’m on version 4.18.2 btw bot sure if anything changed yet in 19 😃

west nymph Mar 27, 2018, 11:21 PM

#

@thin stratus BTW i started a new project, and I was able do the 4 steps you told me.

gloomy tiger Mar 27, 2018, 11:30 PM

#

@hasty adder Okay. Gonna try it as soon as the build finishes here. Thank you advance!

hasty adder Mar 27, 2018, 11:30 PM

#

Np o/

timid pendant Mar 27, 2018, 11:49 PM

#

Hello would a APlayerState::CopyProperties work for a hard travel?

versed socket Mar 28, 2018, 12:09 AM

#

@timid pendant First impression is that since level streaming specifically exists for that reason, if you still don't want to take advantage of that then you'd probably have to store it in GameInstance and go around it that way?

timid pendant Mar 28, 2018, 12:13 AM

#

Would using BEnableSeamlessTravel have the playerstate copy properties to the next level?

faint fjord Mar 28, 2018, 12:33 AM

#

For some reason this only works for the Server. When the client trys to spawn in, they are sent under the map and cant move or look around

📎 Capture.PNG

versed socket Mar 28, 2018, 12:47 AM

#

@timid pendant There's another step that you have to do -- you have to add the PlayerState to the list of actors to transfer over -- I think it's in the World settings or the Project settings? It's somewhere in the Docs

timid pendant Mar 28, 2018, 12:47 AM

#

Alright thank you

gloomy tiger Mar 28, 2018, 12:51 AM

#

Hey @hasty adder. It worked, heh. Thank you! 😄

frozen plinth Mar 28, 2018, 12:52 AM

#

hi masters, i make a steam project , but i can't find match game . ( i followed UE4 official teach)

#

is steam api still work on 4.18.3?

hasty adder Mar 28, 2018, 12:54 AM

#

Excellent 😃

tawny raven Mar 28, 2018, 12:58 AM

#

So I'm currently having an issue where my user interfaces on one character is appearing on other client's viewports. Does anyone know a fix for it?

meager spade Mar 28, 2018, 1:01 AM

#

just a quick question, would i use player controller to handle all the widgets for pre-game stuff, then when the level loads, use the player controller for that level?

#

ie, Menu level, use its own controller

fossil spoke Mar 28, 2018, 1:11 AM

#

@meager spade Yes its common to have an seperate set of classes that handle an traditional menu level that is seperate to actual gameplay level classes

gloomy tiger Mar 28, 2018, 1:49 AM

#

People, another question (geez!)

I've successfully built my Server (thanks to @hasty adder and @potent raven) and deployed it into a test, Windows Server 2016 virtual machine. There's one thing that is driving me crazy tho: The map specified on the commandline "/Engine/Maps/Entry" could not be found. Exiting.

Problems:

The map my server is set to initialise on DefaultEngine.ini is Test and not Entry.
When running the exact same Server.exe on my actual machine (not the VM), it works like a charm--no errors, no nothing.

My attempts:

https://answers.unrealengine.com/questions/14288/startup-map-settings.html#answer-container-16913 - the Save/Set as Default button is disabled to me.
https://answers.unrealengine.com/questions/434795/dedicated-server-default-map.html#answer-container-436982 - tried all the listed steps. No success. Makes the server keep attempting to open /Engine/Maps/Entry/.
Deleted Binaries/, Saved/, Intermediate/.

An image of my problem:

📎 unknown.png

eternal fulcrum Mar 28, 2018, 1:59 AM

#

And youve set the serverdefaultmap to your entry as well?

twin juniper Mar 28, 2018, 2:02 AM

#

I'm having an issue with this function "TermBody" when I update my Instances it just seems to lag the shit out of my server when I call it on a multicast. However, I'm wondering if I can call Multicast functions asynchronously
Do you know if this is possible?
Because it seems to be causing some MAJOR problems
https://i.imgur.com/ISGLMPl.png

I get these hitches
whenever I call UInstancedStaticMeshComponent::UpdateInstanceTransform()(edited)
If you don't know that's fine

Imgur

wary willow Mar 28, 2018, 2:11 AM

#

@gloomy tiger if you moved your map and didn't change it in project settings at Maps/Mode and/or Packaging prior to building, you will get that error.

gloomy tiger Mar 28, 2018, 2:12 AM

#

@eternal fulcrum yes.

#

@wary willow I've changed it in project settings, yes:

📎 unknown.png

eternal fulcrum Mar 28, 2018, 2:12 AM

#

Yeah and it should definitely cook in. And youre saying you can take the exact same packaged build and it works on one machine but not a vm?

gloomy tiger Mar 28, 2018, 2:13 AM

#

Correct. @eternal fulcrum

#

Not sure if this is a vm-related-problem (I'm 99% sure that's not), but the output is different on a different machine.

eternal fulcrum Mar 28, 2018, 2:14 AM

#

Are you running the server exe in the binaries/win64 folder or the one created at root?

gloomy tiger Mar 28, 2018, 2:24 AM

#

The one created at root.

#

WindowsServer/Server.exe

#

Even so:

📎 unknown.png

eternal fulcrum Mar 28, 2018, 2:35 AM

#

Ive had some weird issues with the root one. Shot in the dark, try the binaries folder one

#

I know aws gamelift hated me using the root one

gloomy tiger Mar 28, 2018, 2:37 AM

#

Yes, I've tried it, hehe.

tulip creek Mar 28, 2018, 2:38 AM

#

First time doing MP, if I have an in-game currency that a player earns in online matches; is there any way to prevent them losing their progress if they uninstall their game (and thus their local savegame)?

gloomy tiger Mar 28, 2018, 2:43 AM

#

@tulip creek well, you shouldn't store their progress on their local machine, because at the same time they can uninstall, they can hijack. 😛

tulip creek Mar 28, 2018, 2:45 AM

#

If I'm doing p2p, where would I store it? @gloomy tiger 🙄

gloomy tiger Mar 28, 2018, 2:52 AM

#

Are you distributing your game on Steam? Because if so, Steam Cloud would be an easy option for you.

#

Otherwise, if you're building your installer for your own, maybe you have an option to prevent a file to be deleted when your game is uninstalled.

tulip creek Mar 28, 2018, 2:56 AM

#

Steam, yes. But also Oculus and PS4

gloomy tiger Mar 28, 2018, 3:00 AM

#

In this case, @tulip creek, I'd say for you to have a server where you send their progress and keep this information stored there.

#

@eternal fulcrum @potent raven look this:

On WindowsServer/Engine/Config, I do have BaseEditor.ini with the following configs:

GameDefaultMap=/Engine/Maps/Entry
ServerDefaultMap=/Engine/Maps/Entry

#

I have the impression that my VM is considering this BaseEditor.ini instead of the configs I've stablished for my project through DefaultEditor.ini.

#

Because on WindowsServer/MyGame/Config/DefaultEditor.ini I have the correct default maps.

#

As seen here:

ServerDefaultMap=/Game/Levels/Test/Test.Test

eternal fulcrum Mar 28, 2018, 3:07 AM

#

Hmmmm odd. I cant say ive ever seen anything like that

gloomy tiger Mar 28, 2018, 3:49 AM

#

Yea, odd.

#

I'm making some progress. I was right -- the Server on my VM is taking into account BaseEngine.ini rather than my game's. Also: https://docs.unrealengine.com/en-us/Programming/Basics/ConfigurationFiles#filehierarchy

#

I just can't understand exactly... why. 🤔

hasty adder Mar 28, 2018, 4:04 AM

#

Just a wild guess fix up directors on your maps folder ?

gloomy tiger Mar 28, 2018, 4:05 AM

#

Yeah, @hasty adder. I've tried it!

#

But guys... I found the problem. 🤦 🤦

hasty adder Mar 28, 2018, 4:06 AM

#

Not adding the file in the compile? 😉

gloomy tiger Mar 28, 2018, 4:07 AM

#

Nope. Haha. Not THAT stupid.

#

Basically, it was a lack of attention on writing my .bat that'd lift the server up.

hasty adder Mar 28, 2018, 4:07 AM

#

Oh lol

gloomy tiger Mar 28, 2018, 4:07 AM

#

SET location=%~dp0Packages\WindowsServer\
SET fileName=Server.exe

start %location%\%filename% -log

#

This is what I had.

#

This is what I have now:

SET location=%~dp0Packages\WindowsServer\
SET fileName=Server.exe

"%location%\%filename%" /Game/Levels/Test -log

#

https://giphy.com/gifs/chris-christie-rand-paul-attacks-GfAD7Bl016Gfm

Giphy

hasty adder Mar 28, 2018, 4:08 AM

#

\o/

gloomy tiger Mar 28, 2018, 4:09 AM

#

5 hours on this thing lol, but it worked.

#

Thank you for those that helped me! \o

thin stratus Mar 28, 2018, 7:31 AM

#

Still not sure how to handle a GameMode being able to be FFA and Teambased. My Hierarchy is usually "Base" - > "FFA" - > "Team", where a specific gamemode either inherits from FFA or teambased. However we have a mode now that should be both, though I kinda refuse to code it twice.
I do need two gamemode classes for it, as the resulting classes (character, UI, etc.) need to fit FFA and teambased too.
If only we could have multiple parents per class :/

winged badger Mar 28, 2018, 7:32 AM

#

move the functionality to components?

#

it is an actor, after all

thin stratus Mar 28, 2018, 7:34 AM

#

Hm yeah, so plugging the component on an FFA class to make it teambased

#

Don't know if that works in all cases. Nearly all classes need a different implementation for teambased

#

Would you then actively modify the base values of the class through the component? @winged badger

winged badger Mar 28, 2018, 7:41 AM

#

you could do something like

#

if (bTeamBased)
{
    return SomeBaseFunction();
}
else
{
    return TeamComponent->SomeFunction();
}

#

where needed, but i wouldn't directly modify the Actor from a Component if at all possible

thin stratus Mar 28, 2018, 7:42 AM

#

Yeah that's okayish, i could check if the component is available

#

However I have cases where the class gets additional components and different values based on the mode

#

Like the character receiving additional mesh, other widgets etc. Feels hacky with components

#

Also thought about having ffa and teambased in one game mode and using a boolean to switch between them

#

But that feels even more hacky

#

Hm

winged badger Mar 28, 2018, 7:45 AM

#

this is baslcally using a Component as an Interface, hacky is not really avoidable

#

and if a standard Interface could do the job, you wouldn't have the dilemma in the first place

thin stratus Mar 28, 2018, 7:48 AM

#

That's true. Guess I'll have to draw some class diagrams and see what really needs to go into a team-component.

#

Thanks so far

fossil spoke Mar 28, 2018, 8:00 AM

#

@thin stratus What GameMode would need both FFA and TDM?

#

lol

thin stratus Mar 28, 2018, 8:01 AM

#

Not at the same time

fossil spoke Mar 28, 2018, 8:01 AM

#

Ohh

thin stratus Mar 28, 2018, 8:01 AM

#

But we want a GameMode to be playable in FFA or TDM

fossil spoke Mar 28, 2018, 8:01 AM

#

I suggested component based to you ages ago. I found it worked well, though it is alot of work.

thin stratus Mar 28, 2018, 8:01 AM

#

Yeah I know, still kinda needing a proper overview

#

Cause it goes from choosing SpawnPoints, to Showing different UI, to adding and modifying classes.

#

And that whole thing needs to be able to work with future other game modes

winged badger Mar 28, 2018, 8:05 AM

#

alternative is to make FFA teambased with default team size of 1

#

but that could get messy fast

thin stratus Mar 28, 2018, 8:15 AM

#

That is basically the same as using a boolean

#

I would need to have both FFA and TeamBased things in the same class

#

I already had the Team "None" to use as FFA, but that's only really working for Spawnpoints and Damage stuff

winged badger Mar 28, 2018, 8:44 AM

#

yep, messy

thin stratus Mar 28, 2018, 8:47 AM

#

Other thing is that I could change the way I inherit.
Currently it's GameMode_FFA and GameMode_Team
And each of them results in XY_FFA and XY_Team

#

Meaning I need to implement each mode twice.

#

Otherway round I cound have XY_Base and making XY_FFA and XY_Team, resulting in keeping the overall GameMode stuff ONCE in Base,
but always reimplementing FFA and Team stuff into each new GameMode

winged badger Mar 28, 2018, 8:48 AM

#

Component based approach opens one more option: slap it into the Pawns and just route SpawnPoints thru the boolean

thin stratus Mar 28, 2018, 8:49 AM

#

I can easily replace the boolean with "DoesComponentExist"

#

But yes, same idea

winged badger Mar 28, 2018, 8:49 AM

#

well, depending on your current code, ofc

thin stratus Mar 28, 2018, 8:49 AM

#

Still worried about "Needing to modify the Actor from the Component"

#

Other game I worked on added a colored Cube to the Character for Teambased.
And other things.

winged badger Mar 28, 2018, 8:49 AM

#

by "slap it into the pawns" i meant the PawnTeamComponent

#

maybe its easier that way

thin stratus Mar 28, 2018, 8:50 AM

#

I will test a bit. g2g, thanks for your time so far!

lean hornet Mar 28, 2018, 9:06 AM

#

Trying to posess actor after joining works on Host player (testing it locally pie)
Am i doing something directly wrong or it it just the issue with PIE ?

https://blueprintue.com/blueprint/5wnab623/

BlueprintUE.com

anonymous

cant create actor

winged badger Mar 28, 2018, 9:09 AM

#

and what's not working?

lean hornet Mar 28, 2018, 9:09 AM

#

Well when player joins session (other then host) it doesnt posess nor spawn (could be a issue tho with pie (running it with 2 clients because i dont have any friends online at this time lol)

winged badger Mar 28, 2018, 9:10 AM

#

it is connected tho?

#

and that is inside your GameMode?

#

logs should tell you if the client connected or not

#

also LogSpawn entry will tell you if your spawn failed because it collided with host's pawn

#

with SpawnActor node configured like that, its more then likely

#

(exact same location and undefined CollisionHandlingOverride)

lean hornet Mar 28, 2018, 9:22 AM

#

oh shit i forgot about that

#

give me 1

#

thanks @winged badger it worked splendidly

balmy kindle Mar 28, 2018, 11:55 AM

#

i just heard that instanced static meshes do not work properly in multiplayer... is that correct?

hidden thorn Mar 28, 2018, 1:04 PM

#

Is ChildActorClass (Property of ChildActorComponent) supposed to reset on clients?
Setup: Blueprint -> Manually placed ChildActorComponent -> Manually selected the component to use

twin juniper Mar 28, 2018, 1:08 PM

#

How do you guys save player data in your games?

meager spade Mar 28, 2018, 1:28 PM

#

i use a online database

fiery sorrel Mar 28, 2018, 3:44 PM

#

so I have weird thing happening to me, I have player1 calling a function on player2 that is supposed to spawn a widget on player2 but whenever I call the function it spawns the widget on player1 instead of player2... I know that the function is running on player2 cause I can do other things with it, just not this. Any one have any ideas?

thin stratus Mar 28, 2018, 4:01 PM

#

Without code, no

fiery sorrel Mar 28, 2018, 4:04 PM

#

@thin stratus sooo its not possible?

thin stratus Mar 28, 2018, 4:04 PM

#

I mean i can't help you without seeing your code

#

Sorry just woke up

fiery sorrel Mar 28, 2018, 4:05 PM

#

lol okay I'm using blueprints and they're not in front of me atm I'll try and get them soon

meager spade Mar 28, 2018, 4:22 PM

#

Can you not put blueprints into GameMode?

lean hornet Mar 28, 2018, 4:23 PM

#

so, i tried using Advanced session locally it kinda worked but it took ages to even find a local session and when i tried with a freind it diddnt work at all

My bp : https://blueprintue.com/blueprint/myh8cqpb/

Any direct ideas ?

BlueprintUE.com

anonymous

cant find session

loud sage Mar 28, 2018, 4:23 PM

#

Has anyone here experienced any issues with the wrong steam version being installed/detected by UE 4.19? Looks like it's trying to find v139, though the one installed by the engine (in /ThirdParty) is v142 🤔 k

#

@lean hornet Your server slot widget creation code seems to be connected to the regular output, and not the On Success. This means that the results array won't be properly set yet, and it won't actually have searched for sessions. Could be an issue with BlueprintUE.com, but if you have the same in your actual blueprint, then please try and connect that chunk of code (starting with the ForEachLoop) to the On Success pin instead 😃

lean hornet Mar 28, 2018, 4:26 PM

#

why is it always when i ask something stupid like that thanks @loud sage

loud sage Mar 28, 2018, 4:27 PM

#

Everyone makes mistakes like that, and sometimes you just keep missing them....I have the same 😉 Anyway, no problem....hope it fixes your issue 😃

lean hornet Mar 28, 2018, 4:28 PM

#

way faster

#

Thanks mate.

loud sage Mar 28, 2018, 4:28 PM

#

No problem 😃 Glad it worked!

languid plume Mar 28, 2018, 4:33 PM

#

Heya guys, quick question or rather a sanity check on what I'm doing for my prototype:

I have a quasi-persistent server that everyone connects to. People socialize there and have a chat and form parties.
These parties can put themselves into a queue by command
Once two parties have a match, they join a server together.

How these parties join the server is where I need the sanity check:
I have a list of "game-ready" servers that listen on different ports. Two parties that have a match get one of those ports assigned, get an "open level" command over there and then have their match.
Info on the respective players(accountid etc) is saved in the gameinstance, all information the "game-ready" servers need is queud from a DB using this info.

During their match, the server-port is listed as blocked and can't be assigned to other parties. Once their match is done, they are thrown back into the social level and the port is freed for other parties to use.

Does this make sense at all to you? Is there an easier way to do this that I haven't considered?

uncut pivot Mar 28, 2018, 4:45 PM

#

playerstates kept on the server after the client leaves?

languid plume Mar 28, 2018, 4:53 PM

#

Nope, the network flow of Unreal is pretty much untouched. I just fake the persistency by saving/loading the player-defined data from a DB whenver it's changed, and cache that in the unreal server for faster usage. When players leave a game-server, that is all gone.

It's not a lot of data, basically just a simple loadout-configuration and social stuff (such as party), so a couple of IDs at most. Also this is all for a prototype, so I'm just looking for the most-simple solution first and foremost.

uncut pivot Mar 28, 2018, 4:55 PM

#

oh i was asking for myself but yeah

languid plume Mar 28, 2018, 4:55 PM

#

Oh :D

uncut pivot Mar 28, 2018, 4:55 PM

#

oh wait let me read your question

#

thats what we do

#

essentiaally we just have a master server

#

thats written in python that just handles a redis db

#

we use socket io and stuff just for basic events and such

languid plume Mar 28, 2018, 4:57 PM

#

(PlayerState is destroyed on disconnect btw!)

uncut pivot Mar 28, 2018, 4:57 PM

#

yeahh yeahh

#

i was hoping not

languid plume Mar 28, 2018, 4:57 PM

#

Stuff like that is why I'm fiddling with a REST-backend as well

#

Everytime a player connects I gather all the important data and throw it at the player

#

It's probably not the best solution but...it works atm :D

uncut pivot Mar 28, 2018, 4:58 PM

#

its that or have an actor only on the server that just stores player data

#

and is never destroyed

#

but thats not good for server restarts and such

languid plume Mar 28, 2018, 4:58 PM

#

Yup

fiery sorrel Mar 28, 2018, 5:11 PM

#

so I have weird thing happening to me, I have player1 calling a function on player2 that is supposed to spawn a widget on player2 but whenever I call the function it spawns the widget on player1 instead of player2... I know that the function is running on player2 cause I can do other things with it, just not this. Any one have any ideas? I posted this above but I didn't have any pictures, I'll post some pictures now

📎 Get_Character.PNG

#

📎 Call.PNG

#

📎 Function.PNG

thin stratus Mar 28, 2018, 5:12 PM

#

@uncut pivot PlayerState is NOT destroyed on Disconnect afaik

#

It goes into a x second inactive mode

#

And if you reconnect you can have your stuff back

#

The function "OnOverrideWith" is used for that iirc

fiery sorrel Mar 28, 2018, 5:13 PM

#

oh those are really hard to read one sec

#

📎 Get_Character.PNG

#

Thats how I get the character reference with a line trace

thin stratus Mar 28, 2018, 5:19 PM

#

Did you make sure that you are not, by any mistake, trying yourself?

#

Also can you please show all the pictures in proper resolution

fiery sorrel Mar 28, 2018, 5:20 PM

#

This is how I call the function from player1 to player2, Locked Onto is the character reference

📎 Call.PNG

#

is that one okay? I'm sure its calling to the right character since I can make it die and all that cool stuff

thin stratus Mar 28, 2018, 5:25 PM

#

Not entirely sure. It's quite hard to see what exactly is going on

#

But in general you are Tracing someone. Does that trace happen on the Server?

fiery sorrel Mar 28, 2018, 5:26 PM

#

nope that happens on the client

twin juniper Mar 28, 2018, 5:28 PM

#

Hey guys! If I pass a pointer to UObject I got from a raytrace on clientside and then pass it in an RPC to the server, will it refer to the server's version of the object when the RPC goes through?

thin stratus Mar 28, 2018, 5:29 PM

#

@fiery sorrel So you are setting the Replicated Variable on the Client that traced

#

As well as calling the ClientRPC from the Client that called the Trace?

#

You do realize that, if that's the case, that you are completely ignoring the fact, that a ClientRPC needs to happen on the Server

#

@twin juniper No, as UObject, by default, aren't replicated

#

First class to replicate are AActors

fiery sorrel Mar 28, 2018, 5:32 PM

#

No I'm setting the replicated variable on the client that called the trace, I don't think I ever set that to the other client . What is the ClientRPC?

thin stratus Mar 28, 2018, 5:33 PM

#

Replication only works from Server to Client

#

Clients can't talk to each other directly

#

📎 unknown.png

#

This is your ClientRPC

#

And you need to call that from the Server

#

Otherwise it won't work

#

So make sure you execute the Trace on the Server

#

brb

fiery sorrel Mar 28, 2018, 5:34 PM

#

Okay I'll try that

twin juniper Mar 28, 2018, 5:36 PM

#

Hm. I'm asking because I'm writing item interaction for my pawn. So I can't use pointers then? Should I be giving the item itself a function to make itself be "picked up"? And if so, how do I specify the pawn?

thin stratus Mar 28, 2018, 5:39 PM

#

That's a lot of questions :D

twin juniper Mar 28, 2018, 5:39 PM

#

Okay, nevermind. I'm sorry, my original problem was caused by something unrelated. It seems I can actually use pointers from client->server to refer to world actors

#

Well it was all referring to a single question really

thin stratus Mar 28, 2018, 5:40 PM

#

Correct, as long as they are replicated

twin juniper Mar 28, 2018, 5:40 PM

#

Oh, that's good to know!

#

Hey I was meaning to ask - why do you help newcomers?

#

I mean surely you got plenty of things to do

wary willow Mar 28, 2018, 5:42 PM

#

Cause he is a boss

thin stratus Mar 28, 2018, 5:42 PM

#

Replicated Actors are created on the Server and that replicates them to the Clients

#

Cause I like teaching

wary willow Mar 28, 2018, 5:42 PM

#

Why do people need reasons to help others?

#

Also very glad he does, I am always learning something new or refreshing myself in things I forget/haven't done in awhile.

twin juniper Mar 28, 2018, 5:44 PM

#

I mean it's by no means a bad thing in any way, it's just unusual to me to see a community where people help each other to this degree. I'm almost waiting for there to be a catch 😄

wary willow Mar 28, 2018, 5:44 PM

#

TBH, wish people would ask more advanced questions

#

Stuff not related to actual replicationor or the usual "Oh, I forgot to replicate a variable, oh I tried calling a server RPC from unowned actor"

#

Because I can't ever think of any

fiery sorrel Mar 28, 2018, 5:45 PM

#

@thin stratus okay I think I get it but just some clarification... so I can't call a function from a client to another client? Thats what I was doing and some things actually worked, the ClientRPC was definitely getting called on the right player. so is it just that certain things don't work that way? also I changed the DefendClient to run on server it just didn't run so I'm assuming I'm missing something really obvious XD... Thank you so much for the help btw!

thin stratus Mar 28, 2018, 5:46 PM

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Well, there is no catch.

mild hull Mar 28, 2018, 5:46 PM

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@twin juniper any noob could become a expert and help you later, in the end if you have the time to anwser question than it can never hurt to do so

thin stratus Mar 28, 2018, 5:46 PM

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Epic doesn't have a lot of documentation and even with the existing one, documentation never really helps a complete beginner.
At some point everyone starts googling for something that doesn't work.

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Usually for stuff that others already fought with

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So I started 3 years ago to answer AnswerHUB questions. As much as I can

wary willow Mar 28, 2018, 5:47 PM

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Oh, actually, I do have a legit question for the "Networking Master" @thin stratus . When are you going to update your NetworkComp with Best Practices?

thin stratus Mar 28, 2018, 5:47 PM

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Some point Epic picked me up as a moderator

wary willow Mar 28, 2018, 5:47 PM

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😭

thin stratus Mar 28, 2018, 5:48 PM

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And later invited me, along with 9 other people to GDC (2016).
We, and a lot of other users (e.g. previous GDC and more) like to help people.
Mathew for example has a huge collection of Youtube Videos.
Others hold Meetups or make Livestream content.

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And again others do the Reddit, or Forum

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Idk, it's just people liking to help each other.

wary willow Mar 28, 2018, 5:48 PM

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Or these things:

📎 unknown.png

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I want the Ultimate Networking Comp

thin stratus Mar 28, 2018, 5:49 PM

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And Epic supports us in that, so it even makes a bit more fun

wary willow Mar 28, 2018, 5:49 PM

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Gimme

thin stratus Mar 28, 2018, 5:49 PM

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@wary willow Buddy, I would update it, but I have 0 time. We are moving from Belgium to Germany in ~1 month and I have to do all the paper works and keep track of my clients atm

wary willow Mar 28, 2018, 5:49 PM

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I know I know

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It's not like most of the info isn't out there

twin juniper Mar 28, 2018, 5:50 PM

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@wary willow For most intermediate stuff I usually find a tutorial or an article. I don't think anyone's going to write an article about silly simple mistakes beginners make. That's why people ask those here, I think.

@thin stratus I've not really been active creatively on the internet until I started having to learn things to work on my game. I guess I'm not used to productive community hubs 😃 I don't think I'd be even 30% of where I'm now if it wasn't for the help from this Discord.

wary willow Mar 28, 2018, 5:50 PM

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It's just always a pain to google it and then find relevant info

thin stratus Mar 28, 2018, 5:50 PM

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The comments on these are already quite usefull

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Despite maybe the Dormancy

wary willow Mar 28, 2018, 5:51 PM

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@twin juniper Hmm, I don't about that... You should check out Goggle

thin stratus Mar 28, 2018, 5:51 PM

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To be fair, we are quite unique in terms of helping

wary willow Mar 28, 2018, 5:51 PM

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plenty of stuff for beginners

thin stratus Mar 28, 2018, 5:51 PM

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Also, just as a side note: Check the pinned messages of this channel.

wary willow Mar 28, 2018, 5:51 PM

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It's usually Intermediate/Advanced stuff that people keep hidden

meager spade Mar 28, 2018, 5:51 PM

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how can i get a refrence to my AI actor blueprint in GameMode

thin stratus Mar 28, 2018, 5:51 PM

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There is my 100+ pages Network Guide

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In case you haven't read that yet

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@meager spade For example by letting your AI register itself in the GameMode

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As "GetGameMode", as long as called on the Server, is available in all your blueprints

twin juniper Mar 28, 2018, 5:52 PM

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I scanned google for a full hour trying to solve the problem I had yesterday until I realized I didn't specify my class in the function implementation and thats why the compiler told me the delegate I was trying to use wasn't declared.

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I mean these kinds of mistakes

meager spade Mar 28, 2018, 5:52 PM

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let me rephrase slightly, its so i can spawn the AI from the GameMode

wary willow Mar 28, 2018, 5:52 PM

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@meager spade Do you have a spawner?

meager spade Mar 28, 2018, 5:52 PM

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unless that is not the best place to do it

wary willow Mar 28, 2018, 5:52 PM

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Or you just want to use GM as the spawner?

thin stratus Mar 28, 2018, 5:53 PM

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Is it an AI that functions as a player?

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Like bots in Counter Strike?`

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Or what is your AI about

meager spade Mar 28, 2018, 5:53 PM

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its a mindless enemy that chases the player down

thin stratus Mar 28, 2018, 5:53 PM

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Cause usually people spawn these in Spawner Volumes

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But despite that, your AI is just a Character Class

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Or Pawn Class

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That should have an AIController specified

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And set to possess when Spawning

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Then you can just Spawn it via SpawnActor

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After Spawning, the SpawnNode will give you a reference to your spawned actor

meager spade Mar 28, 2018, 5:56 PM

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i have lots of spawn points, like 60 of them, and depending where the player is, it only spawns in spawners near the player. I could just get the gamemode to send the spawn command to the spawner itself, and let the spawner handle it like @wary willow was hinting at

wary willow Mar 28, 2018, 5:56 PM

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Yeah

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We just did that for our game

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We let the Spawn Manager handle the pooling

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The spawn points handle the spawning as long as there is an AI available

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We just drop in a the Spawn Manager and Spawn Points, that's it

meager spade Mar 28, 2018, 5:57 PM

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Spawn Manager... that's an idea, will take alot of code out of the GameMode

wary willow Mar 28, 2018, 5:57 PM

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From the GM, you can then grab the SM and adjust its logic (spawn faster, spawn more) as necessary

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Or GS, guess it depends what you plan on doing with it

thin stratus Mar 28, 2018, 5:57 PM

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You could also manage it in the GameMode but just shove it into an ActorComponent

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I usually have my Managers as Components on the GameState or GameMode

wary willow Mar 28, 2018, 5:58 PM

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Ah, that's a valid point.

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Either way, many ways to do it

thin stratus Mar 28, 2018, 5:58 PM

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In the end you'll have to decide what you want to use for your system

meager spade Mar 28, 2018, 5:59 PM

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plus i will want to use pooling as i will be spawning some stupid number of enemies, like 30 plus at one time, i don't want to destroy them, just hide and deactivate them ready for the next time

timid pendant Mar 28, 2018, 5:59 PM

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Hey I have a question about this SetPlayerName function new in ue4 4.19. Why isnt it supported to be used with a dedicated server? Would adding Netmode == NM_Dedicatedserver to the engine source fix that issue

📎 playername.PNG

thin stratus Mar 28, 2018, 6:00 PM

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Standalone is DedicatedServer afaik

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In C++, RepNotify functions don't automatically call on the Server

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That's why they call it by hand

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@timid pendant

timid pendant Mar 28, 2018, 6:02 PM

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Alright because that function only works when I use a listen server or when im on LAN. Doesnt work for the dedicated server

summer nova Mar 28, 2018, 6:06 PM

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seamless travel is some of the most annoying shit ever created

thin stratus Mar 28, 2018, 6:15 PM

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Why

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@timid pendant Hm, that's weird, as the If really just covers the OnRep

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@summer nova What is bugging you?

summer nova Mar 28, 2018, 6:17 PM

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@thin stratus the way it doesnt reset stuff (even if thats the point), and the way maps are loaded in a different way than usual. Its given me a bit of trouble

thin stratus Mar 28, 2018, 6:17 PM

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Hm, despite it calling OnSwapPlayerControllers and OnCopyProperties, as well as not calling OnPostLogin, what else is going wrong?

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I found it quite straight forward to use and actually usefull to keep data between map changes

summer nova Mar 28, 2018, 6:18 PM

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mostly that BeginPlay is not being called on stuff. Wich is something i would like to happen. But ill find an alternative

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does GameState get reset?

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and thats the "GetWorld()" on the gamemode?

thin stratus Mar 28, 2018, 6:19 PM

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As far as I saw, GameState did get reset last time I checked

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There is only a specific list of Actors actually persisting

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Think GameMode, PlayerController and PlayerState?

summer nova Mar 28, 2018, 6:20 PM

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even with some bugs, today i was able to do a full playtest of my cooperative dungeon crawl vr game

thin stratus Mar 28, 2018, 6:20 PM

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Uh nice!

summer nova Mar 28, 2018, 6:20 PM

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3 separate dungeons + a final boss

thin stratus Mar 28, 2018, 6:20 PM

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Is it "just" a crawler or more like a rogue like?

summer nova Mar 28, 2018, 6:20 PM

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rogelike-ish

thin stratus Mar 28, 2018, 6:20 PM

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Vive or Oculus?

summer nova Mar 28, 2018, 6:21 PM

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more like diablo

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Oculus atm, should run on vive but havent tried to test it

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also PSVR

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but of course cant do multiplayer tests in PSVR with 1 devkit

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im doing the vertical slice with full multiplayer, so i can pitch it to sony

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beg for some extra devkits

thin stratus Mar 28, 2018, 6:21 PM

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Multiplayer in VR in general is annoying

summer nova Mar 28, 2018, 6:21 PM

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in a player way, or as a dev

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as a dev its literal hell

thin stratus Mar 28, 2018, 6:22 PM

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dev

summer nova Mar 28, 2018, 6:22 PM

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imagine my case where im basically lone dev

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my artist has an oculus so we test from time to time, but thats about it

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other tests are done locally with simulation

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also

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what a goddamn shame i cant bake lights on blueprints

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my shadows need to be dynamic

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and thats costly

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real costly

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im going to see if i can hook into the shadow caching system

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and call the caching manually

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or something of the sort

meager spade Mar 28, 2018, 6:29 PM

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@thin stratus can you access properties to modify them on a component added to the GameMode?

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because i just got a blank page

thin stratus Mar 28, 2018, 6:29 PM

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A blank page?

meager spade Mar 28, 2018, 6:30 PM

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blank details tab

thin stratus Mar 28, 2018, 6:30 PM

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@summer nova Well i'm doing a lot of Multiplayer VR for clients

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I tend to implement and test the VR controls and from that point on create a non vr player and do the rest with that

meager spade Mar 28, 2018, 6:34 PM

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https://gyazo.com/2bbe4fb7c548f059cc59a7a98333f019

Gyazo

summer nova Mar 28, 2018, 6:34 PM

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@thin stratus yeah thats what i do

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i have my full control set on non-vr

thin stratus Mar 28, 2018, 6:35 PM

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@meager spade What are you UPROPERTY settings?

meager spade Mar 28, 2018, 6:36 PM

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UPROPERTY(EditDefaultsOnly, Category="AI")
class ASAICharacter* ZombieChar;

thin stratus Mar 28, 2018, 6:36 PM

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Because they are in fact editable

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Try VisibleAnywhere

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In addition

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What what

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I mean of the Component

meager spade Mar 28, 2018, 6:36 PM

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oh i am an idiot

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also UPROPERTY(EditDefaultsOnly, Category="AI")
class ASAICharacter* ZombieChar;

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is only letting me pick objects in World Outliner of that type

lean hornet Mar 28, 2018, 6:40 PM

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so~ ive been trying all day to make people connect to my local client (Advanced session) it works perfectly local but i couldnt have any of my friends or connect to them (are there any requirements port wise ?)

thin stratus Mar 28, 2018, 6:41 PM

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@meager spade WEll yeah

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That's a Pointer to the class

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If you want to select the class you need to use TSubclassOf<ASAICharacter> ClassVariable

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@lean hornet Are you trying to use Sessions Online?

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Are you actually finding Sessions?

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If not, are you even using a Subsystem that supports that?

meager spade Mar 28, 2018, 6:43 PM

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thanks, that was a noob move, i should have known that, been a long day, thanks @thin stratus

lean hornet Mar 28, 2018, 6:44 PM

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@thin stratus I using the advanced session plugin wich uses the steam online subsystem wich is active. what my goal is to connect to the session i can provide the bp : https://blueprintue.com/blueprint/myh8cqpb/

BlueprintUE.com

anonymous

cant find session

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I hope i make more sense now.

thin stratus Mar 28, 2018, 6:46 PM

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📎 unknown.png

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You have to use Success

lean hornet Mar 28, 2018, 6:46 PM

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already fixed that

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thats not the issue sorry for sending the outdated one.

thin stratus Mar 28, 2018, 6:47 PM

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So you are getting what result?

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Did you try to remove the ServerTypeToSearch?

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What exactly is that?

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I never used that Plugin

lean hornet Mar 28, 2018, 6:48 PM

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So locally with two clients i get the server displayed and can join when i try to host doesnt work if somebody else hosts it doesnt work (and no im not hosting it lan) that is what kind of servers you can find you can either set it to all lan or steam only

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Wait 1 ;

thin stratus Mar 28, 2018, 6:49 PM

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I really don't know

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I would recommend setting up the Native Nodes first

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And ruling out a general issue with your project

lean hornet Mar 28, 2018, 6:49 PM

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hmmm im going to look something up really quickly

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(also if you ever work with multiplayer games i highly reccomend the plugin it makes things like voice chat and actually giving your sever details hecka easy)

thin stratus Mar 28, 2018, 6:52 PM

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Well yes, if you don't know C++, it's okay

lean hornet Mar 28, 2018, 7:18 PM

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it was a stamapi issue i fixed it with including a simple text document with the app id

hidden thorn Mar 28, 2018, 7:30 PM

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Does anyone know ChildActorClass resets to null but only on the client, on the server is fine: https://i.imgur.com/lMYP03m.png

Imgur

gloomy tiger Mar 28, 2018, 7:42 PM

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Hey guys--what usually happens after a MatchmakingRequest? I mean, regardless of the Game Service that's bridging this for us.

The Player X sends a request and what? He/she has to listen to a response when another player matched with him/she, right?

thin stratus Mar 28, 2018, 7:44 PM

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Yop

wary willow Mar 28, 2018, 8:06 PM

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MP in VR in 4.20 hopefully will be awesome

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with "dedicated server" option

thin stratus Mar 28, 2018, 8:11 PM

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Haven't checked. What does that change for VR?

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@wary willow

wary willow Mar 28, 2018, 8:11 PM

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You can test client side

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in VR

thin stratus Mar 28, 2018, 8:12 PM

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And why exactly can't I do this right now?

wary willow Mar 28, 2018, 8:12 PM

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WIthout using 2D

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You can't?

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It doesn't work for me

thin stratus Mar 28, 2018, 8:12 PM

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What keeps me from ticking DedicatedServer?

wary willow Mar 28, 2018, 8:12 PM

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Try it

thin stratus Mar 28, 2018, 8:12 PM

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No engine open. What happens?

wary willow Mar 28, 2018, 8:13 PM

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Nothing

thin stratus Mar 28, 2018, 8:14 PM

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Well that's unexpected

wary willow Mar 28, 2018, 8:18 PM

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https://answers.unrealengine.com/questions/755284/vr-dedicated-server-not-working.html?sort=oldest

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This is basically what I experience

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https://answers.unrealengine.com/questions/720988/vr-previews-dont-work-with-run-dedicated-server.html

meager spade Mar 28, 2018, 8:21 PM

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wrong channel :/

versed socket Mar 28, 2018, 8:22 PM

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@meager spade It's possible to delete the stuff you post fyi

summer nova Mar 28, 2018, 10:07 PM

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@wary willow its been like that forever 😦

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such a massive pain

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the dedicated server gets the "vr input", and the PIE client cant do shit

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when i want to test actual mp, i open a dedicated server through commandline

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and then do a "launch game" option from the project file

vocal dagger Mar 28, 2018, 10:25 PM

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Hi, I believe this goes in here, I have followed the guides to setup Steam on my project and I got it running, the only problem is that I cannot see some properties on runtime because no symbols loaded for steamclient64.dll, according to the guide I have to place the symbols in Engine/Binaries/ThirdParty/Steamworks/Win64 and Win32 (as I did), but I still wonder, should I tell Visual Studio to load those symbols manually as well? maybe someone here has run into the same issue

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this is what I mean

📎 devenv_2018-03-29_00-14-38.png

graceful cave Mar 28, 2018, 11:13 PM

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i just noticed something new in 4.19

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this is in 4.18

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📎 unknown.png

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this is in 4.19

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📎 unknown.png

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seems like playername no longer replicates

faint fjord Mar 28, 2018, 11:37 PM

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This works to spawn the server, but when client trys to spawn they are spawned under the map...

📎 Capture.PNG

timid pendant Mar 28, 2018, 11:38 PM

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@graceful cave Yeah PlayerName is Deprecated

📎 playername.PNG

vocal dagger Mar 29, 2018, 12:04 AM

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Looks like the Steam setup guides available online (Rama's and the Official UE4 guide) needs some updating, I still cannot find how to load the steam symbols properly 'UE4Editor.exe' (Win32): Loaded '[MySteamLocaton]\Steam\steamclient64.dll'. Cannot find or open the PDB file. and UE_4.19\Engine\Binaries\ThirdParty\Steamworks\Steamv139\Win64\steam_api64.dll'. Cannot find or open the PDB file.. Both files are right there.

sly basin Mar 29, 2018, 6:27 AM

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@vocal dagger just went through that a couple months ago with 4.18.3, you're right it needs a bit of updating but it will work if you track down the errors one by one.

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I don't know why your dlls aren't being loaded however, didn't run into that specific issue

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I wish that Rama guy was on discord 😛

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one thing you might want to look at - i notice in your code there Win32 and steamclient64.dll that seems to be a mismatch. There is a steamclient.dll (no 64)

vocal dagger Mar 29, 2018, 8:48 AM

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@sly basin yeah I did notice that as well, weird because I'm running the Win64 solution

wary cedar Mar 29, 2018, 11:51 AM

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Is it specified that Reliable RPCs called on the remote machine in the same order they was invoked on the local machine?

grand kestrel Mar 29, 2018, 12:07 PM

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TCP is guaranteed reliable and ordered, yes

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Unless you're sending them from different threads

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Which likely doesn't apply to UE4, so yes

wary cedar Mar 29, 2018, 12:13 PM

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Do Reliable RPCs use TCP in UE4? I thought they use custom implementation over UDP (as more common approach for games)

grand kestrel Mar 29, 2018, 12:36 PM

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Oh, yeah, I'm half asleep

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Quick google answers your question anyway
https://answers.unrealengine.com/questions/56017/is-the-order-of-execution-respected-on-reliable-rp.html

fluid mica Mar 29, 2018, 1:08 PM

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Anybody know how I can have one mouse cursor in split screen that reacts to each screen properly? Currently if I get hit result it will use the viewport of player 1, even in the places where that viewport is covered by player 2 and 3 in the bottom.

vocal dagger Mar 29, 2018, 1:15 PM

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when you get a hit result from another player and you check GetOwningPlayer() on that widget it returns the player1?, what do you mean by HitResult?

fluid mica Mar 29, 2018, 1:36 PM

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📎 split.jpg

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Just an image from Google I wrote some stuff on.

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Get Hit Result under Cursor by Object would return the floor of player 1 here and not the sky visible on player 2s screen

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I'm sure that's intentional, because Mouse is part of the player controller for player 1. But what I would need is to have all split screens react to the mouse as if the mouse was a controller for all of them equally

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@vocal dagger

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Maybe if I change the Player Controller depending on screen position...?

vocal dagger Mar 29, 2018, 1:47 PM

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but GetHitResultUnderCursor() is a method from a PlayerController

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are you calling this method from the correct PC?

fluid mica Mar 29, 2018, 1:52 PM

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Yeah, its local. That's why I'm saying that it might help to change the player controller depending on where the mouse is on the screen. Unfortunately can't test right now, cause source is building.

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Didn't think of that tho when just asking this :9

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I'm basically trying to emulate a software with multiple cameras/views

vocal dagger Mar 29, 2018, 2:01 PM

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nice, I have been playing around with the UI a lot lately and I know how weird it can get to achieve some very simple things, especially in local multiplayer

lean hornet Mar 29, 2018, 2:04 PM

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Issues with forwarding info and creating widget https://www.youtube.com/watch?v=7AHjCJUqGoo&feature=youtu.be

YouTube

DualGM

Issues with Createing widget(multiplayer)

▶ Play video

fluid mica Mar 29, 2018, 2:17 PM

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Can't really check since at work (and need to get this stuff working before eastern :9), but your widget is not something you could show and hide in another widget? What I like to do is having widgets that contain many other widgets. And then I change the content of the the big widget. @lean hornet

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So like 1 main menu widget with added child menus (in designer view), 1 HUD with single parts etc

lean hornet Mar 29, 2018, 2:19 PM

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1 SEC

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That wont fix my issue i can send some screenshots to better show and explain