Yeah my original idea was just having a FearController class that was a really simple AI controller that literally just possessed the character and added movement input in one direction until the fear effect expired, but unpossessing and repossessing seems messy.
#multiplayer
vivid seal
And also I lose all inputs and the like with that method, even things that should still work while feared
winged badger
you could do
construct a SplineComponent (can use a PathFinding Query for points)
while its feared, disable all movement input, and just animate the character position over the Spline
drawback of this is that while you are doing that, you're basically teleporting
so your velocity is zero, and all animations based on it will break
you could check for feared flag, then construct a feared velocity from the spline tangent and max move speed though
vivid seal
Yeah exactly i thought about using SetActorLocation with collision checking but I’d have to fuck with animations
winged badger
then it comes to a simple mutator
vivid seal
Well on the one hand there’s probably only like six people who will ever play my game so maybe cheating won’t be an issue :)
On the other hand it’s probably good to learn to deal with this stuff
winged badger
GetVelocity() in AnimBP that returns velocity if not feated, or normalized tangent at spline point multiplied by walkspeed if feared
vivid seal
That would work, I’m trying to think if there are any other instances of outside movement input that could occur besides run in fear.
winged badger
the benefit of a spline approach over just teleporting in a direction is that the client can simulate the movement smoothly
and simply
vivid seal
Well thanks for the suggestions, this was helpful
rich ridge
Did anyone have any idea regarding how many dedicated serves I can run on one instance
To be specific I m using Linux Dedicated server
Any rough figures will also help
bitter oriole
Depends on your game and the server hardware.
rich ridge
@bitter oriole lets say it's a moba game and I m using 16 core and 32GB Ram
bitter oriole
It depends on your game
Anything from 16 instances to 1, if you really want an estimate
rich ridge
So per core one instance
bitter oriole
No
It depends on your game
Maybe your server isn't even enough
Maybe your game is so light and the server so powerful that you can run 20 or 30 instances on it
Maybe half the servers are empty
There is no way to know without testing it
rich ridge
Hmm makes sense
rich ridge
@bitter oriole I ran 20 instances of my server on Windows machine, and my windows machine is 6 core and 16 GB RAM
intel i7-8700k
and my windows was running smooth
bitter oriole
How many players were playing on each of these 20 instances ?
rich ridge
0, I just ran it
bitter oriole
So it's irrelevant
How about the average framerate on each of these ? It was 60 right ?
rich ridge
yes
rich ridge
how do I do that?
bitter oriole
🤷
rich ridge
hahaha
bitter oriole
Start by having 20 players connected to each of these
Because your test doesn't mean much
You can then proceed to log the delta time at each tick, and print a report on a text file somewhere
You should also measure the lag on clients to ensure the response time is smooth
You can then decide what the target performance is - should the server run 30, 60, 120 fps ?
And then you can see how many instances you can run while keeping your desired peformance
rich ridge
I was listening to Gears 3 dev talk and their chief engineer mentioned that they were able to spawn dozens of dedicated server on windows machine.
@bitter oriole I m noting this down.
bitter oriole
You probably don't even want to run your dedi on Windows, really
Linux hosting is way cheaper
rich ridge
No, I just mentioned that if windows can handle dozens then on same hardware Linux can handled even more.
thats what i meant
and ofcouse Linux is way cheap, efficient and secure
rich ridge
ok, why?😕
half jewel
you can package a development server executable with profiler support to really see how things are doing
rich ridge
@half jewel definitely gonna try this
lone edge
Hey guys I am using Advanced sessions and was just curious how I can grab the avatar image of a player that accepts my invite on steam and display it on a widget
subtle patio
I'm getting different results on my client when I package my project as opposed to running in editor.. Is this a typical problem when developing multiplayer?
desert glacier
@subtle patio give an example, I Don't understand
subtle patio
Moving a unit to a tile, when running in editor returns 1 value and when packaged returns something completely different - vague I know, but I would have expected the game to work the same when in and out of the editor? I don't believe I'm using any editor only code
subtle patio
LAN
no dedicated
Fixed the problem
before I was passing the object reference
changed to passing the tile coordinates and it works
fluid flower
Hey everyone, I have this issue that even tho my server is set to 2 players max, players can still connect to it. I can't seem to cap it at all.
drifting plank
@subtle patio It can work if the actor is replicated (cause the actor will have a network guid which permit to retrieve the reference of the actor once on the server 😉 )
But in your case, that's ok!
subtle patio
I see, of course.. wasn't replicating the actor.
Second line of inquiry - testing multiplayer. Can you not use Hamachi and a LAN session to test a project?
so far opening my ports has proved unsuccessful in connecting a session to my friend's pc, and hamachi + LAN is equally as unresponsive
advanced sessions/steam requires you to use ID 480, and will not work internationally
red pollen
Right, I hope I don't get the same answer that everybody always gives about getting your own App ID or whatever. Anyway, I've about finished playing around and making a cool game in Unreal Engine. However, I don't want to make this game for commercial use, so I have no reason to get my own AppID at the moment. It costs like $100 after all. I am pretty sure that I have multiplayer working as it should, using the Advanced Sessions Plugin + Steam, as when I play in standalone on two instances, these clients can connect and play with each other, even when the LAN box isn't ticked on session creation. Problem is, when I package the game, I can't find the session, no matter what I do. I've tried having another computer on the same network run a session, and I have tried having two instances of the game open on my own PC and I simply can not find the session. Do I have to open ports for Steam to work? I thought using Steam Servers would prevent this? I have changed the search result max to something crazy like 999999, as I'm aware Spacewar ID gets used a lot and you can pick up other instances, but this should be plenty. Any ideas?
ocean geyser
that max search amount is more than enough (i have no issues with 10000), im not sure if this is the case but i have the port 7777 open for UE4 and i can connect. like you said i dont think it should require any port forwarding going through steam
subtle patio
^ I gave up on steam 2 days ago because it doesn't work internationally with ID 480, however even with port forwarded 7777 and the steam port forwarded 27015 I never managed to get steam server showing across 2 pcs and 2 steam accounts on the same network
ocean geyser
might be of assistance to look through. no comments but its working, might show something missed perhaps?
red pollen
I unfortunately used blueprints for my game, and not cpp as I haven't learnt it yet, but I've had a read through and nothing jumps out at me.
subtle patio
@ocean geyser Hey cheers mate, will take a look
red pollen
Still no luck even though I opened up the ports.
So frustrating! Maybe it has something to do with blueprints as opposed to cpp
ocean geyser
hmm it shouldnt unless theres something weird going on, ive used the advanced sessions in the past with luck
hoary lark
personally, if I wasn't going to actually get a steam ID or pay for some other online subsystem and it's for a small pet project, I would always just stick to good old reliable direct connection and live with forcing the host to forward a port (I can't say why it wouldn't work for Catch2, direct connection should be reliable, but it is confusing to diagnose when you're not familiar with it)
only sucks if you're on a dorm network or something that frequently blocks stuff like hamachi and other "random" net traffic
subtle patio
@hoary lark Imma wire shark and see what's going on with it - because afaik, just doing a straight up punch through with the ports should be fine, I'm in an apartment building, so I doubt they've got too much security in place
red pollen
Thing is, my port forwarding 100% works, I have hosted other games servers and had people join even from USA (I'm in UK)
subtle patio
yeah I guess diagnose @red pollen problem more than mine
red pollen
You using blueprints @subtle patio ?
subtle patio
yeah
red pollen
Have you ever got this to work?
subtle patio
@not on this connection - just moved, I've provided firewall exceptions etc
but I've used hamachi to connect to other things
successfully, and the pings get through
red pollen
When you answer could you tag me? Going to bed and don't wanna miss this ^^ ❤️
glad wharf
Hi all, do you know where I can set the voice treshold for activating VoIP ? It seems even with push to talk it does not trigger before a certain volume is detected
Found it : voice.SilenceDetectionThreshold or UVOIPStatics::SetMicTreshold for those interested
ornate crescent
Hi, how i can make to only replicate specify variables to the owner (player) of the character? and not the rest of the players
glad wharf
ornate crescent
thanks @glad wharf
ornate crescent
i prefer c++, thanks !! 😄
jolly siren
Is there overhead in replicating an empty array via a rpc?
red pollen
Anybody had the same issue as me and managed to figure it out?
The whole... can't find server when packaged?
jolly siren
listen or dedicated?
thin stratus
Your own appID?
red pollen
No
That's what I'm saying though, if you scroll up a bit, how come people have got it working?
thin stratus
They increase the amount of requested servers by alot
Cause you will get tons of servers that ue4 filters out in the back but that count into the query for steam
So if you request 20 server and it returns 20 of other games then you won't see yours
red pollen
Im o 999999
thin stratus
Well the safest is to get your own id
red pollen
If you mind, im just gunnah copy and paste my little description
Right, I hope I don't get the same answer that everybody always gives about getting your own App ID or whatever. Anyway, I've about finished playing around and making a cool game in Unreal Engine. However, I don't want to make this game for commercial use, so I have no reason to get my own AppID at the moment. It costs like $100 after all. I am pretty sure that I have multiplayer working as it should, using the Advanced Sessions Plugin + Steam, as when I play in standalone on two instances, these clients can connect and play with each other, even when the LAN box isn't ticked on session creation. Problem is, when I package the game, I can't find the session, no matter what I do. I've tried having another computer on the same network run a session, and I have tried having two instances of the game open on my own PC and I simply can not find the session. Do I have to open ports for Steam to work? I thought using Steam Servers would prevent this? I have changed the search result max to something crazy like 999999, as I'm aware Spacewar ID gets used a lot and you can pick up other instances, but this should be plenty. Any ideas?
I also don't have the money to do that just for the sake of a bit of fun / learning
jolly siren
I've never had any issues using Spacewar
red pollen
Maybe you can help then
CPP or blueprints? @jolly siren
Also, have you got it to work on separate networks / computers, using the Steam subsystem?
And did you have to port forward any ports?
red pollen
Not very helpful for me, as I can't code in cpp so used blueprints.
And, used listen servers.
jolly siren
alright, good luck
red pollen
I wonder if someone else can help me sort this, it's hurting my brain
See, what if I pump $100 into it, and it still doesn't work?
Like that's gunnah be even worse, I'm a student with no funds etc
jolly siren
I doubt it's the app id
I've done bp/cpp and listen/dedicated. I was just mentioning what I primarily work in
red pollen
Okay... would it help if I showed you my Game Instance, where I create, find and join sessions?
jolly siren
The ports you need to forward are 7777 and 27015
Who is your ISP?
Do you have your own router or one you rent from them or both?
red pollen
I have opened both of those ports
And I'm with Virgin Media
I suppose it's said I rent my router from them
But port forwarding does work, I've port forwarded a minecraft server with success
My game instance.
jolly siren
Have you tried disabling your windows firewall?
red pollen
That I have not.
I'll give that a try
Would it just be the host, or the client trying to join too?
jolly siren
Host, but you might as well do both for the test
red pollen
Gotcha.
Give me 5 mins.
Okay this is going to be very difficult for me to explain what is happening, but it's been a bit of a breakthrough.
Here's how it went.
I turned off my firewall on both pcs. I opened up the game on my PC. Could not host the server, the create session node was failing, really don't know why. The second PC could host a game, which I couldn't find on my PC. Note that the second PC, when the lobby loaded, had their steam profile picture and name attached to player card, as it should be.
Decided to open the game up again on both PCs, while the first instance was still running. In the 2nd instance (1st PC, where the session failed to create), I could create a session, however when I joined the lobby, the playercard had my actual PC name, not my steam name (Desktop whatever whatever), and the steam avatar was blank. I assume something to do with not being able to launch a game twice on steam so defaults to that. Fine. 2nd PC, 2nd instance, can find the game i set up on my 1st pc. Can join. Joins, and the same where it's not the Steam name and avatar for the playercard, but the PC name and a blank avatar.
What the hell is going on here xD It must be something to do with steam? Both accounts have the UK set in store preferences, and both are on the same download server (Manchester) in the steam settings.
Hopefully some of this information will help someone figure this out 😄 @jolly siren
exotic axle
Is there a way to select a camera for the player controller, on an actor that has multiple cameras, each of which will have its own camera?
red pollen
Right okay
jolly siren
And make sure all instances of the game are completely shutdown before running again
check task manager
red pollen
On it.
exotic axle
I'm trying to use Set View Target with Blend, which selects the first active camera. Which means I have to deactivate cameras in order for it to select the right camera. However, I don't want to do that because I want multiple players to control different cameras on the actor.
jolly siren
@exotic axle A camera has it's own camera? Inception
exotic axle
No, an actor has 3 cameras.
I have a tank that has 3 cameras: driver sight, gunner sight, commander sight. Each camera would belong to a player controller.
Set View Target automatically selects the first available camera
Normally, the way to do this in singleplayer is to just deactivate the other 2 cameras
jolly siren
Set bAutoManageActiveCameraTarget to false and handle it yourself
exotic axle
Is there a way to handle it in BP?
jolly siren
If you are limited to BP you will likely need to keep using the activate/deactivate route. You should be able to re-activate the camera for the next player that needs to use it.
red pollen
Okay so a further update on the situation. I got a friend of mine to run the game, and my 2nd pc (None of these PCs have unreal engine files or anything, just the game), and they could create a server, join and play, none of them port forwarded and both have firewall activated.
What could it be if it was just my PC?
Should I just completely wipe my Unreal engine etc?
exotic axle
Setting bAutoManageActiveCameraTarget to false won't help me. That still wouldn't allow me to specify a UCameraComponent for view target. View target always only takes in an AActor
jolly siren
Correct
exotic axle
So I guess the right thing to do here is to separate each CameraComponent out into its own actor? :/
It's just hard to do that in my case because they're attached to bones on the skeletal mesh
winged badger
attachtocomponent takes a socket
so all you'd need to do is add a couple of named sockets to your skeleton
exotic axle
That's what I ended up doing
exotic axle
I have an issue that forces me to use delay in multiplayer but I hate the fact that I have to use it:
- Spawn tank pawn (driver), possess with player controller
- Spawn tank gunner pawn
- Spawn tank driver view camera
- Spawn tank gunner view camera
-- Game starts, some time passes, everything spawned correctly --
- Possess tank gunner
- Set view target doesn't work on the OnPossess event for the tank gunner. Camera goes into the belly (origin) of the tank instead of the gunner camera as expected.
If I put even a 0.1s delay right after the event possess node, this works flawlessly.
In the BP picture: Tank is valid. Gunner view is valid. Incoming New Controller is valid and casts successfully to PlayerController.
All the inputs to the Set View Target with Blend node are valid when it's executed, yet it doesn't set the view to the gunner camera as expected.
There are no errors. The above block only executes once, on the server (because that's the possess event). I'm just frustrated that I need to put in these random delays to make things work!
winged badger
uh, your options are pretty limited with BP @exotic axle
try ExposingOnSpawn GunnerView and spawning it before the GunnerPawn, push the reference to the GunnerView in it as you spawn it
and your bAutoManageCamera is false, correct? that sets/overrides the view target pretty aggressively
exotic axle
The GunnerView is already spawned way before OnPossess is run so that shouldn't do anything.
I'm open to doing things in C++ but I just want to prototype multiplayer stuff out in BP so I don't have to deal with BOTH the issues of C++ and multiplayer at the same time.
wet oriole
@exotic axle I'm in a similar situation,
I can spawn the camera & it's correct for the server player but after a client join the new client camera is correct for just one second & after that uses the default camera!
I've a custom camera from the base camera actor class
wet oriole
I'm trying to find a solution to solve the problem without the delay, I really don't like the delay 😄
exotic axle
Same here. Did you try the change he recommended using C++?
People are saying setting bAutoManageCamera to false allows more fine grain control
wet oriole
No, I didn't try that solution yet
exotic axle
Ah I fixed it with BP. You can actually set that variable on the player controller BP. Just need to override it.
Thanks for the help
upper moat
I updated to ue4.24 and i need a ServerTarget for that version of ue4 im seeting up a dedicated server hears the tutorial that im following https://wiki.unrealengine.com/Dedicated_Server_Guide_(Windows_%26_Linux) i try to build but it gives me and error about line 27 and in that line is this ref List<UEBuildBinaryConfiguration> OutBuildBinaryConfigurations,ref List<string> OutExtraModuleNames
help
winged badger
@exotic axle @wet oriole bAutoManageCamera find a ViewTarget for a PC as soon as it joins (StartSpot by default) and caches it
then whenever anything that can change the ViewTarget happens it sets the ViewTarget back to cached StartSpot
ending only after the Pawn is possessed
thing literally calls SetViewTarget 6-8 times during player construction
R00k, is your issue limited to clients, does the listen server host have it?
as there is a replication race condition involved for clients - VIewTarget in PC replicates before your TankView Actor replicates = you get what you described
and PC has higher NetPriority by default, so it happens consistently
wet oriole
@winged badger Thanks that variable fixed my problem.
Guys I'm using InputComponent->BindTouch(EInputEvent::IE_Pressed, this, &ABasePlayerController::MoveToTouchLocation); in player controller SetupInputComponent function but the problem is clients can't register input commands!
winged badger
CameraActors on the level have a dropdown, something along the lines of Player<Index>
if those are set, that CameraActor for Player1 is paired with controller with the same index
and is used as a ViewTarget for AutoManageCamera
for that particular controller
rich ridge
Hi all, I was going through ActionRPG code. In character class the abilities are granted if its server, what if I m running dedicated server then the abilities should be granted by GameMode?
Can someone comment on this.
void ARPGCharacterBase::AddStartupGameplayAbilities()
{
check(AbilitySystemComponent);
if (Role == ROLE_Authority && !bAbilitiesInitialized)
{
// Grant abilities, but only on the server
for (TSubclassOf<URPGGameplayAbility>& StartupAbility : GameplayAbilities)
{
AbilitySystemComponent->GiveAbility(FGameplayAbilitySpec(StartupAbility, GetCharacterLevel(), INDEX_NONE, this));
}
// Now apply passives
for (TSubclassOf<UGameplayEffect>& GameplayEffect : PassiveGameplayEffects)
{
FGameplayEffectContextHandle EffectContext = AbilitySystemComponent->MakeEffectContext();
EffectContext.AddSourceObject(this);
FGameplayEffectSpecHandle NewHandle = AbilitySystemComponent->MakeOutgoingSpec(GameplayEffect, GetCharacterLevel(), EffectContext);
if (NewHandle.IsValid())
{
FActiveGameplayEffectHandle ActiveGEHandle = AbilitySystemComponent->ApplyGameplayEffectSpecToTarget(*NewHandle.Data.Get(), AbilitySystemComponent);
}
}
AddSlottedGameplayAbilities();
bAbilitiesInitialized = true;
}
}
@upper moat could you explain, I can help u with your issue.
grizzled tide
Hi, im making a game with 1vs1 online versus for mobile devices. I think that dedicated server for this could be overkill, so i was wondering if someone has implemented something like this. I tried sessions but it doesnt work on mobile.
gray scroll
I m spawning in game menu on clients inside my player controller then in my gamestate im running a server event to update all in game menu... ofc the server doesnt know about the in game menu reference so i run the event on owning client
but i still get none for in game menu
how do i get the reference for the in game menu
grizzled tide
how are you doing it
@gray scroll remember that there is a controller in server and client
gray scroll
this is run on locally controlled
then i m calling this inside a server event
@grizzled tide
grizzled tide
my guess is
when you run getall actor of class
due to gamemode runs on server
it gets all player controllers from server not client
didi you check this?
magic helm
If you try doing a get all actors of class thing on a client, it will only get the ones that are relevant(player controllers and pawns typically go in and out of the relevancy range)
Server, everything is there so you don't have to worry about relevancy
gray scroll
Yea i think i need to run owning client event after getting all actors
Will try that in a sec
fluid finch
Anyone else having issues in 4.24 after upgrading a project?
I can run for a couple of seconds only to be ported back to the inital position or some in between
cosmic star
Is there a possibility to launch two or more local clients from the editor? The first client then should be made into a listen server, while the others stay local and then can connect to the listen server later on. Using the advanced options always starts a listen server as well.
Or do I have to manually start a new game instance?
fleet raven
this is not something PIE can do by default
cosmic star
So, start PIE as normal, make it into listen Server and then start a new instance via Terminal/PS/CMD and use as client?
exotic axle
I managed to get everything working without delay (except the initial wait for everyone to join code that's going to change later). Thanks everyone!
south ether
So this has me more than a little confused. I'm just rotating an actor on the server with AddActorLocalRotation, and if I turn on the actor bReplicateMovement = true, the client sees a horrible stutter - but if I turn bRM = false, the client still sees the rotation but its much smoother and appears to be updating more frequently?!
it all happens in a ROLE_Authority block so it should only be updating the rotation on the server
is bReplicateMovement redundant to either bReplicates or bAlwaysRelevant, so I was somehow doing it twice?
sly arch
Is there a way to check if a dedicated server is online via blueprints?
sly arch
nvm i figured it out
hushed spire
i am spawning an actor on client so not replicated. I am calling a server event to get all my player controllers from game mode but i m not able to get their actors. Is there any way to get the actors without replicating it? I tried running an owning client even from server
lost inlet
if you spawn an actor clientside then the server doesn't know it exists
you'll have to call an appropriate event on an actor the server does know about, eg. the controller
wet oriole
Hello guys,
I'm a little bit in problem with my networking functions, this is my workflow:
1-Custom collision overlap: using 'Role == ROLE_Authority' to make sure only server version handle the collision
cast<APickup>(OtherActor)->OnUsed(this)
2-From the custom actor I'll call a function AddScore on the collided pawn
cast<AMyPawn>(InstigatorPawn)->AddScore(ScoreToGive)
3-In the AddScore function of my pawn class i just add the new amount to the current score & current score has a rep notify function
Score += GivenScore
after that I'll call a client rpc function to update score on the ui
ClientUpdateScore();
and recalling rep notify function for the server
if(Role == ROLE_Authority) OnRep_UpdateScore();
but the problem is at the moment the ClientUpdateScore() was called, score in the client is not updated & actually UI shows default score, in the next call the UI shows 1 for score but actually it's showing the previous update, the new score is 2
stray tide
hi, im sharing gamelift working for 4.23. this repo is clone from yetigame gamelift plugin. feel free to use it.
https://github.com/ArifZx/GameliftClientPlugin
magic pike
@stray tide hey, is aws gamelift expensive to use for indies ? is it the most cost-effective or the most costly service for hosting dedicated servers for unreal games ?
assume a situation like this, if there are a total of 1000 daily active users per day, and the game is something like a 1v1 ping pong for mobile, then per month how much would be an approx server cost ?
stray tide
worldly hollow
Im trying to determine how Crouch() in Character.h is replicated. Because I would like to replicate my own 'Sprint()' in the same way. Just not sure how because the number of different ways to replicate a variable/function is intimidating. So I'd like to 'copy' how UE4 did it
Any ideas on how to find out?
magic pike
@stray tide i've seen that, but i think the cost scales based on usage, and i dont know the technical cost of actually running one in real life. I never made a multiplayer game before, so i'm trying to learn how to budget.
stray tide
me too @magic pike, i think it's depend from your game. assume pingpong game use 50mb for running at server. 50 * (1000) / 2 = 25000mb ~ 25gb for your game by day. you can use this:
m5.2xlarge $0.15996 $58.3854 per Month. but in realife i still dont know
i just use it recently
it case is 1000 player in one time
magic pike
1000 player in one time or at a day ?
stray tide
but you can still decease that cost
magic pike
so assume i use this
m5.2xlarge $0.15996
is there a limit to how many instances we can create at a time ?
i assume that every 1v1 ping pong match is its own instance
stray tide
i still find that too
magic pike
and similarly we will have many instances running parallelly
ok
i think it is the concept of instances and their relation to costs that is my biggest question to running a server
rich ridge
@stray tide this calculation is wrong
U can't blindly say it will only take 50 MB
The server executable is itself around 110 MB AND additional packaged files
All all be loaded into memory
@magic pike Gamelift is not cheap
The pricing which they are mentioned in only for 15 days
Amazon is trying to trick you. Read carefully the pricing page. They only mentioned 365 hours that's 15 days
And on top of that network urges are there.
So get away from gamelift.
magic pike
thanks for the warning. I was wary about amazon from the start, but just needed to confirm.
which would be the best service for hosting your unreal dedicated server in your opinion ?
stray tide
thank you @rich ridge i never tought that
rich ridge
I should explore the free instance though, it will help to make you understand how cloud servers works
I have explored the free instance of gamelift
Please do explore it
white mason
Hey, can someone experienced look into my project and tell me why dedicated server with 2+ players are slowing the game down( No it's not frame dropping or hardware) Thanks ❤️
magic pike
ok, but assume i became a master at cloud computing one day and i decided to want to host a production dedicated server, where should i look to ?
in unity, there is the photon unity network service, and i know folks who are using it well. I supposed games built in unreal cannot use the pun service.
rich ridge
your master sever will have something like this
which will track the running instances, do some kind of match making, etc
magic pike
interesting
rich ridge
you need to fork nakama and customize it
magic pike
ok, so is it like a server library that has a range of libraries for providing things like social,data storage and realtime client/server ? I think we ultimately need to host nakama somewhere is it ?
rich ridge
yes
but if you can wait for a while, epic games has promised to deliver the same things for free
except dedicated server hosting
magic pike
i think for my initial learning project i'm not really looking for anything fancy. I just want to make a simple online ping-pong 1v1 game for mobile with the servers running every time.
rich ridge
we will definately need some kind of master server to keep track of dedicated server, because epic games will not provide that
magic pike
like testing the waters before i do something more ambitious
magic pike
and where should the master server be ?
rich ridge
It could be anywhere, AWS ,Azure, Google Cloud
magic pike
does all these services provide a capping feature ? to avoid being overcharged ? That is my biggest worry for making online games. Dont want to end up looking at the humongous credit card bill just to make a simple online game.
rich ridge
If you go with AWS, Azure or Google cloud, they do have some sort of framework available to ease the development, and you may think for starter I can afford few instances on these cloud at higher price, but what if you want to scale , you can scale on these clouds easily but how much you will pay for hosting -> HUGE MONEY
magic pike
damn
rich ridge
@magic pike You can request to increase the instance count
@magic pike Just check this out https://www.digitalocean.com/pricing/
what they lack is some sort of framework to ease the development
they are damm cheap, they offer great service
we just need some kind of master server to launch instance and start game, thats it
magic pike
nice
rich ridge
gamelift takes significant amount of time to launch one fleet
so you need to maintain some kind of pool inadvance to meet the demands realtime
south ether
I've actually used digitalocean for years for webhosting and they're cheap and great, was planning to try and use them first myself, fwiw
rich ridge
@south ether they are damm fast and boot up linux within 20 secs
humble zealot
Hey guys, so when a client connected to the game he is forced off and this is the error shown in the log; Error: FBitWriter overflowed! what is this?
bronze arch
guys a multiplayer game supports particle collisions? https://discordapp.com/channels/187217643009212416/375020523240816640/655915642167230505
rare gyro
Is there a NetMulticast that only sends to works on nearby clients?
winged badger
sends to works?
rare gyro
whats that
winged badger
oh, i was wondering what that means
as is, i can only guess that you want the multicast to affect players closeby
rare gyro
yeah
winged badger
it does that by default, it won't execute on clients that its not net relevant for
default range is 15000 UU
rare gyro
ok good to know, that's what I thought it did initially before I actually saw the documentation, misleading.
sullen prawn
hey all, asking here and in #cinematics , does anyone have any idea why a level sequence wouldn't play on a client, despite having ReplicatedPlayback on?
tulip tartan
I Swear I need this 
sullen prawn
we all do.
my old (udk3) programming text book even said to burn the chapter after reading
fluid finch
LogNetPlayerMovement: Warning: CreateSavedMove: Hit limit of 96 saved moves (timing out or very bad ping?) Anyone else received with after upgrading to 4.24? It comes with inaccurate positioning of my character.
real yacht
after unpossesing AI controller and destroying pawn. AI controller is still in the world
how to properly destroy ai controller?
lean river
yeah emulation 😄
royal isle
Hey, does COND_InitialOnly dynamically decide what to send on the initial bunch depending on the amount of data requested? Because I have a bug where an initial only variable fails to properly send itself to players if the server has 40+ connections
solar stirrup
Is there a way to mark a property in a FFastArraySerializerItem as UPROPERTY() but stop it from being serialized on replication? just want to expose it to the blueprints
UPROPERTY(NotReplicated) is that valid? Found it in the list of specifiers
median marten
If I'm making a game that's most likely mostly listen server, how much latency should I take into account?
winged badger
@solar stirrup it is
solar stirrup
thanks!
winged badger
i don't think that exposing a ffastarrayserializeritem in blueprints is a good idea tho
mainly because it will be pretty awkward to work with
better to add helper functions to the class the fastarray is a member of
it is a struct inside an array inside of a struct, BPs make that very awkward
grizzled stirrup
@median marten Anywhere up to 200ms is good testing grounds
I've seen listen server games with more though since the devs didn't implement a limit
so two people who are matchmaking across the world at very far distances get matched
I don't think any game really holds up in those conditions
fleet raven
with player hosted servers across the world, people regularly play at 150+ms
grizzled stirrup
Yep and often with quite poor connections / dropping packets due to the host
But it's still the most cost effective / simplest way to do MP
And I quite like how elegant it is in the sense it scales infinitely as the players host
twin juniper
if you restrict to regions then you wont be having people with 100+ ping
grizzled stirrup
Yes it's a simple ping check and then it should be fine when matchmaking
fleet raven
and then people will be complaining they can't play with their friends from the other side of the world
grizzled stirrup
I'd disable it for parties
Or private matches
But keep it on for matchmaking
Or just have a player defined value
Like CSGO does
twin juniper
run for the east coast, west coast, west eu, east eu, west asia, east asia, australia all separate, then you wont get anywhere close to 100 ping for any player
grizzled stirrup
But also depending on your game and time, there may be no players around and it can be better for 100+ms and find a game than not find a game of course
But yeah if there's a healthy playerbase that would work great
Start with low ping searches and build up
twin juniper
im talking mmo servers restricted to specific regions
you wanna play at night, you wont meet anyone
grizzled stirrup
Ah I'm talking listen servers for short session based play
royal isle
I can't get my steam server to show up in the Internet tab of the steam master server although the game server API initializes successfully, there are no errors in the logs and I have set my steamwork settings for dedicated servers and also the unreal settings for the steam product name etc. Any ideas?
winged badger
same machine running server and looking for it?
royal isle
no, different machines
there is a weird line in the verbose log, it initializes the STEAM subsystem but after loading the map it initializes the NULL subsystem as well, is this supposed to be happening?
rich ridge
virtual void GetLifetimeReplicatedProps(TArray< FLifetimeProperty >& OutLifetimeProps) const override; I need to override this inside the UObject then
winged badger
you also need to override ReplicateSubobjects in its Outer (i suggest actor because of unreal's replication glitch)
rich ridge
and add the callback for ACharacter class to update
winged badger
where if a Component is Outer on Server, after the UObject replicates, its Outer will be Component->GetOwner()
(on Clients)
also IsSupportedForNetworking in the UObject itself
rich ridge
bool ReplicateSubobjects(class UActorChannel* Channel, class FOutBunch* Bunch, FReplicationFlags* RepFlags) override;
winged badger
GAS has few examples for AttributeSet you can steal from
rich ridge
Now after giving a thought I dont' want the whole UObject to replicate
only few fields of UObject needs to replicate
If I use ReplicateSubobjects function to add ubject, doesn't my whole uobject wiil replicate
winged badger
yeah, but that isn't much ontop of your replicated properties
meager spade
^
meager spade
thats how attribute sets replicate
winged badger
you do need to be careful to stick them into UPROPERTY client side tho
rich ridge
can I explain my code design?
meager spade
i honestly don't see a easy way to replicate specific properties inside a object from an external object
cause of the way DOREPLIFETIME macros work
might be better having a struct on the Actor and having the object set the stuff on that, and replicating that 🤷
rich ridge
AbilityInterface{
SetAbilityCompnent(UAbilitySystemComponent)
SetCharacterLevel()
GetActiveAbilitiesWithItemSlot()
}
AbilityImpl -> implements AbilityInterface {
//implements all functions.
}
CharacterClass{
AbilityInterface = Cast(AbilityImpl);
AbilityInterface.SetAbilityCompnent(CreateAbilityComponent)
//And use AbilityInterface for all ability related stuff like activating and deactivating.
//Use AbilityInterface for GetActiveAbilitiesWithItemSlot, GetCooldownRemainingForTag, etc from ActionRPG
}
This is my design
rich ridge
Is this design worth ?
and my replicated properties will exist in AbilityImpl
@winged badger used 3 backticks
winged badger
much better
rich ridge
so what about my design
winged badger
what exactly manages the lifetime of AbilityComponent there?
rich ridge
AbilityComponent will be created inside character and passed to Impl
winged badger
you can't instantiate an interface object
rich ridge
I m typecasting it
winged badger
and the interface can't hold references on its own
rich ridge
and its working
winged badger
what exactly is implementing that interface?
rich ridge
{
return NewObject<UHeroAbilityImpl>(GetTransientPackage(), NAME_None);
}```
stark spear
Hello guys! I'm new in multiplayer, so this question might be dumb)
Currently i have an actor with moving parts on server.
All movement is implemented inside components and can be triggered by public functions like
UFUNCTION(BlueprintCallable)
void MoveArrow(float RelativeSpeed);
And a bunch of defaultPawn based actors as clients.
What is the quick/best way to make actor with moving parts being controlable by all clients?
rich ridge
so why not a full component, why reinstantiate it all the time?
rich ridge
i didn't understand
winged badger
and outer is important, GetTransientPackage() is not ideal for runtime
rich ridge
UHeroAbilityImpl::Get()
no I always have this```IHeroAbilityInterface* HeroAbility;
and every time you call a Get() it creates a new one
rich ridge
I call it only once inside character constructor
meager spade
i am kinda confused at what you hacking GAS to achieve
rich ridge
I want to separate my GAS logic from character class
winged badger
should definitely not be called Get() with that functionality, Create() would be much better
rich ridge
@winged badger makes sense
meager spade
your custom AbilitySystemComponent should handle stuff like Getting cooldown times etc
winged badger
and even if you go with this structure, making that HeroAbilityImpl a UActorComponent works far better then UObject
as it saves you a ton of headache down the line
rich ridge
@winged badger nice advice
meager spade
honestly tho, you have a custom a abilitysystem component, which can have ALL this logic in it
already replicated
rich ridge
@meager spade but there are few things which my AbilityComponent can';t handle inside it
meager spade
like what?
rich ridge
consider ActinRPG example, /** Returns total time and remaining time for cooldown tags. Returns false if no active cooldowns found */ UFUNCTION(BlueprintCallable, Category = "Abilities") bool GetCooldownRemainingForTag(FGameplayTagContainer CooldownTags, float& TimeRemaining, float& CooldownDuration);
rich ridge
so all these small things I want to separate
meager spade
i honestly feel like you are making more work, when you have what you need already
i understand a custom interface, i have one too, but mine is for the Abilitysystem to do specific stuff on my avatar actor
not my avatar actor to do stuff in the ASC
rich ridge
I get it what you are saying.
meager spade
i have a few helper functions in abilities like GetKaosASC (also a static aswell) and i can activate custom things, like GetCooldownRemainingForTag
my custom interface does return a KaosASC which is useful
just a cast of GetAbilitySystemComponent()
rich ridge
this is also cool
meager spade
i am just giving ideas, whatever way you decide your choice
but AbilitySystemComponent is already replicated, and makes sense for all ASC/ability interaction stuff
rich ridge
here my main concern is abstraction
if i have to change something, I should not change my character class
If i separate things via interface, I only to change the implementors thats it
If i have interface then I can couple that interface with other implementor
meager spade
well depends what kind of stuff your talking about, but i would def think twice about creating an object/another actor component for logic that can be in your custom ASC
ASC/Ability logic should be generic
not dependant on the avatar/asc owner
which is why i have a interface
for stuff which i need additionals for
if cast fails, then obvs that actor doesnt care for that
rich ridge
makes sense
@stark spear Please follow UE4 network compendium first. I think you need to setup PlayerController
stark spear
@rich ridge got it, thanks!
rich ridge
@winged badger If outer is important then what should i use for GetTransientPackage()
rich ridge
{
return NewObject<UHeroAbilityImpl>(World, TEXT("UHeroAbilityImpl"));
}``` this should be fine ---> Not fine giving crash@lean hornet Your tutorial is doing a lot of weird things tbh. I'm happy to tell you what you could/should do different.
royal isle
I have a replication graph question. How are you supposed to handle weapons that the player can pickup / drop? I am currently adding them to the actor's dependent actor list when equipped and removing them when unequipped but that causes the weapon to be immediately destroyed when dropped. Should I spawn them again as independent spatialize_static objects on the dropped location instead?
median marten
@grizzled stirrup oh man thanks. That's gonna be quite a pain to take into account
winged badger
@rich ridge whatever controls the lifetime of that UObject is preferable
Character in this case
timid moss
Guys ever since I started using the OnlineSteamSubsystem I cannot connect to my dedicated server with my brothers at home. I get this error in the server terminal when they try to connectPreLogin failure: incompatible_unique_net_id
rich ridge
@winged badger so yesterday I was passing the world context and it was crashing, will try your way and see the results
reef yarrow
Multiplayer Procedural Games Like Star Citizen. The World Is Huge, and obviosly it's too big to be stored, all at once. So. If your far away from the planet, you, as a client would render the planet as a sphere. and than as you go down, You render it as terrain with buildings, and collisions etc. However for a multiplayer server. Wouldn't the server have to keep the entire games collision Avaiable at once, Like A Server Couldn't have LOD just incase a player was to fly down to the planet and expect some server sided collisions. If the server keeps track of everything, wouldn't this slow it down a lot?
fleet raven
- why did you capitalize random words
- if the goal is to run the entire world on a single server, this can be solved by diving the world into sections/chunks of some kind and streaming the ones that players are near or generating them on demand
echo geode
Hi, is AGameModeBase::Logout(AController* ) exactly opposite of AGameModeBase::PostLogin(APlayerController* )?
Yeah, but why this function takes a Controller pointer as a argument?
Anyway it casts to the a player controller..
rich ridge
@fleet raven there is a high chance that all the chunks are loaded into the memory.
For example sever can have players and each requesting different areas, and that will end up loading the entire chunk
hoary lark
It's a pretty simple concept on paper... Lower the player count or lower the relevant area size per player until "not" all world chunks need to be loaded. Continue doing so until memory usage is acceptable 🤡
rich ridge
@hoary lark what if lower player count and each chunk has one or two players
It's simple if you ignore few edge cases
sacred spire
Tricky indeed.
I still remember Epic dev said they are hoping the players are all spread out in Fortnite.
Guess this is something has to do with chunk in multiplayer
rich ridge
I think you should not consider Epic's approach towards this. They can afford high end computer machine to run the entire map
For small devs like us we can afford that kind of machine
If they would have chunked their fortnite map, then they would have definitely released a blog about that
sacred spire
Their own computer? Wait i could be mistaken something here.
rich ridge
Like AWS
sacred spire
Oh i thought you literally mean their own office machine
rich ridge
No bro
If I had to solve this problem, I will setup my chunk of map a bit largers and make it a streamable map. And the number of dedicated serves is the number of streamable map.
sacred spire
The original topic talked about StarCitizen here. Still nothing about Star Citizen's multiplayer is stable. Players still lag and randomly ragdoll crash in the level and space. This is what i saw on the recent youtuber video.
So each map = different server?
sacred spire
I see.
rich ridge
But again you need a master server which keep tracks of all these transactions
sacred spire
However this won't be nice for those who wants PvP or PK enabled. Exploit is very common in most MMO as seen over the years
Save it and load from db
rich ridge
If you consider PvP,then there are two possible scenarios
- Both player are on same map -> so only one map is loaded
- both players are on different map -> two servers are loaded
sacred spire
Meaning the players interact with each other on different map. Typo right?
Oh ok saw.
Not easy to have 2 servers talking to each other doing damage.
rich ridge
Depends on kind of game.
sacred spire
Which is why there is no solution yet.
And the same exploit still running in today's MMO
rich ridge
If two players are on different map meaning they are too far from each other, they can't damage each other by any means
sacred spire
Um sure but what about the borderline?
rich ridge
Yes that's again a tricky situation
I think we have to have a upper hand here and should not allow fighting at border
sacred spire
The moment your target instanced to the other map. Chances are you may not see that person again. Or you get camped while you load your screen and map. Or it can be battle of hardware attrition. The one with best SSD wins.
rich ridge
Most of the cloud providers they have good SSD, that should not be a concern here
sacred spire
The other alternative is the player exploit it by running back and forth on the borderline.
rich ridge
Any ways a developer it's your responsibility.to sync all the clients
sacred spire
Not that easy. The right way of PvP enabled multiplayer should never have instance server
rich ridge
U mean for PvP it should be listen server
sacred spire
But i am interested to hear about the chunk answer from them or others. Guess it is sleeping timezone for most people here
Well, either way i wouldn't try to make any zones loading for PvP type of multiplayer still.
Bad idea tbh
rich ridge
tbh?
sacred spire
To be honest.
random sundial
You seem to be looking for something like SpatialOS which connects multiple unreal engine servers together "seamlessly" with a bit of work on your end.
https://improbable.io/spatialos
sacred spire
Lol my english isn't good. Sorry about it
random sundial
Note that it is still in alpha and not a completely perfect solution
sacred spire
@random sundial i noticed. The staff said it is not able to run 1,000 players for Unreal Engine on their discord not long ago. I can find the said message in their discord.
They said it is only 30-60 players for Unreal Engine at the moment.
Not even lying. I can find it if you want
Wait
random sundial
Yeah, it is in alpha and moving slowly. I don't think they actually have the whole multi server thing fully implemented for Unreal engine
If you check their roadmap it says it is coming in 2020 sometime. https://github.com/spatialos/UnrealGDK/projects/1
Not the best if you want to release an MMO today
rich ridge
@sacred spire so you are saying PuBg and fortnite doesn't use single server
@random sundial it's even more costlier than AWS or AZURE,
They themselves say it
random sundial
Pubg and Fortnite use a single server, they are just really well optimizied and pubg uses a custom engine version.
bitter oriole
Every large game uses a custom engine really
Fortnite is where UE4 is made, we get the features 6 months later when they're working okay
sacred spire
rich ridge
I truly believe whatever tech which fortnite uses is available on public release of UE4
sacred spire
@rich ridge yup. You need your custom solution to run PUBG or Fortnite.
bitter oriole
Some of the Fortnite tech trickles down to the main engine
random sundial
Doesn't all of it? Most of the tech just lacks documentation
bitter oriole
Certainly not all of it no
Not everything made for a game is relevant for all games
Epic has always used a custom engine fork for every single game, even the community UT thing. They never use the main engine branch
rich ridge
@bitter oriole because we can't use those features in well optimized way
sacred spire
Exactly.
If you are thinking of running 100+ players like PUBG or Fortnite, you gotta spend a lot more time.
rich ridge
@bitter oriole I know that but they do merger those features to main engine
bitter oriole
If you're thinking of runing 100+ players you're probably deluded, no offense.
sacred spire
^exactly.
bitter oriole
Or much better funded that I am.
sacred spire
Tell me your worth. Now.
rich ridge
😂
bitter oriole
Basically 100 online players is like 5% of Steam games now, so you gotta be really confident about selling more than most other titles
random sundial
Hey its simple. Just make a kickstarter and promise everything. Then release a beta and live of that
bitter oriole
That won't cut it today
sacred spire
Yeah like most multiplayer does that
Um not really
Take a look at Oath and Day of Dragons
Scum and DM managed as well
But they are very few in numbers
Oath and Day of Dragons are dumpster fire. The latter is funded with $550,000
Oath literally scammed people over 6 digits of money.
Their discord currently full of shit talk and hate sadly.
bitter oriole
550k is not much
sacred spire
If you can earn that in a month, sure.
bitter oriole
It's not enough to make any real game professionally
random sundial
Yeah, you really want to be the next Star Citizen
sacred spire
The point is, getting the money.
Not about much or not. They probably don't even release beyond beta or use much of the funds
bitter oriole
The problem with Kickstarter is that asking for the real amount (5, 10, 20M) kills your campaign
So people ask for 10k, still needing 5, 10, 20M
They got 500k, what do they do ?
bitter oriole
Well yeah
random sundial
Buy a small yacht?
sacred spire
Nah buy a yacht like grim said
bitter oriole
Anyway, some data on Steam player counts :
- 1% have 500 players or more
- 3% have 100 players or more
- 5% have 50 players or more
- 10% have 15 players or more
random sundial
Those are some depressing stats
sacred spire
Where do you see that?
bitter oriole
Play around with Steamcharts for a bit.
sacred spire
It is indeed not easy to make multiplayer
chrome bay
1/10 don't recommend
sacred spire
I am not on PC to open steam. I never remember where to find that.
bitter oriole
Basically if you needs your game to have 10 players around, you need to be a really solid title
If you need 50 players you are setting yourself up for failure
sacred spire
Would be nice if you can screen shot if it is a list displayed straight away
chrome bay
My suggestion is also building up a community before the game releases. Make sure it has some traction beforehand, will help with publishing etc.
Discord is kinda nice for that
You can also gauge whether anybody will care when it does eventually release.
sacred spire
Yup. Going 50players is hurdle. Not only that, the real issue is finding 50players at once.
chrome bay
Being able to iterate and improve on an MP game is now stupidly critical as well
bitter oriole
50 players, worldwide, playing at the same time, is impossible for 95% of games. Not even talking ping, servers, etc.
chrome bay
The big-leagues are pumping content out so fast now people expect it for everything.
rich ridge
If you are college student they explore your campus for players
Just bribe college students, they will play your game
bitter oriole
Remember when Read Dead Redemption 2 tanked its publisher's stock ?
Huge volume, critical success
But "not the next Fortnite"
sacred spire
@bitter oriole i am on mobile browser Steamchart. I cannot find anything to allow me check what games have what number players in their multiplayer.
bitter oriole
This is page 50 of the top played games
1226th most played game (so, borderline top 4%) has 59 online players
So if your game needs 59 online players worldwide, today, you'd need to be in the top 4% most played games on Steam
sacred spire
Current players but most of them are singleplayer though
bitter oriole
Doesn't change anything, though
sacred spire
Uh. I thought you originally meant to say how many multiplayers have what type of number of multiplayer "arena"
bitter oriole
What I mean is very simple : if you plan on having 100 players available at the same time, near eachother, you need to be in the very top of the most played games
sacred spire
I see. I understood the other way round.
bitter oriole
95% of all Steam games could not work as multiplayer arena games because they'd be player-starved
So, like, avoid doing that 😛
sacred spire
Exactly. Every games are competing for players and time
Unless you think your game is really next Fortnite, maybe you can go ahead and build large scale multiplayer game
rich ridge
I think MOBA is good to go
bitter oriole
Even for a 5v5 MOBA, you need to perform drastically better commercially than the average game
rich ridge
@sacred spire but only 10 players at a time
sacred spire
Correct 10players. But would you want only 10 hero option as MOBA while the top MOBA has more variety?
It is what you can offer what other MOBA or Fortnite cannot offer. If you have same thing or not much of changes, then best to go back to singleplayer.
bitter oriole
10 players MOBA with 15 minute games with one minute matchmaking (too long) and only three matchmaking regions means you need 500 players
Welcome to the top 1% selling Steam games
Can't do that ? Your game is dead
rich ridge
@bitter oriole even fortnite takes 40 second for matchmaking
rich ridge
I have experienced even 120 seconds with fortnite
@bitter oriole was this the reason why Paragon shut down?
rich ridge
Ohk, means Paragon had some good number game audiences or players despite that they shut it down
real yacht
is it possible to start dedicated server .exe with network profile enabled?
i know that i can run networkprofile enabled in editor
is it possible to start .exe with that argument
thnx
fluid finch
Anyone else noticining significant drop in network performance on 4.24?
grizzled tide
Anyone knows how can start the implementation of STUN and ICE for a peer to peer mobile game?
thin stratus
@rich ridge There is no information about this. But I'm pretty sure that if Paragon would have been worth it, Epic would've kept it.
So based on that I would say: No, it didn't do well enough and didn't have enough players.
@real yacht I think Epic added some stuff that allows profiling a server. But not sure how. It might be done by joining the server.
The server would then report the stuff to the client. At least that's what I think it was. They made this during the time they had Fornite and Paragon to be able to debug and profile cloud servers iirc.
void nest
Is there a way to use servertravel command with absolute? Like opening a new level? what would the command be?
void nest
how can I use this in execute console command?
with the open level node there is also an options string you can input, maybe there is a command for that?
warm summit
Hey guys, do you know any information source, on how to implement online matchmaking on android? thanks in advance yum
icy nacelle
Trying to get an instanced mesh to delete for everyone. Currently it will delete on the server's version and not on any client, regardless of who has attempted to delete the instanced mesh. Here's some code from the player controller..
and here's blueprints from the instanced mesh actor. It's set to replicate as is the instanced component.
twin vault
Here's some code from the player controller..
clients wont have the other player controllers
the multicast will be called on their player controllers right
echo geode
GameState is good class to use replicated variables though over all network
Or keeping all player controller informations on GameMode class which is available only server. You can add/remove player controllers using Event PostLogin or LogOut BP events.
icy nacelle
But I'm calling a server event on the controller to then call a multicast event on a server object?
twin vault
yes, but a multicast need to be on something that exists on client, where it will execute the code
thats why u cant multicast from gamemode for example
even though it exists on server
icy nacelle
But the actor that I'm calling the multicast on already exists on the clients
twin vault
youre calling on what actor?
icy nacelle
So basically the controller uses a run on server event to then tell an actor to multicast its instance being removed
echo geode
maybe it could be a authority problem which causes to destroy unauthorized actor instance
echo geode
also UMG widgets
icy nacelle
But Takain, a controller can still pass a message to an actor for that actor to multicast it??
Or am I getting confused?
(I havent made anything in multiplayer in a loooooong time)
twin vault
aah
the multicast is not on the controller
k, i tough both the blueprints were inside the controller
sorry
icy nacelle
No sir, that multicast is on the actor that I want to remove the instance from
np np ❤️
I'm just confused as to why this doesnt work - I'm pretty sure it should work just fine.
twin vault
are u sure the index is the same on all clients?
or better, are u sure its not calling that at all
echo geode
Are these variables needs to be replicated?
icy nacelle
If I put a print string after the RemoveInstance, it'll return true for both the client and server
I'm pretty sure the indexs are the same, seems that way since they're made on the server.
The actor is replicated, as is its component
thin stratus
@icy nacelle Are you inside of a PlayerController?
icy nacelle
For the first screenshot, yes
thin stratus
And the BP_HISM_Brick is replicated?
icy nacelle
yep
thin stratus
Hm, not solving the issue, but you should add a branch to make sure the hit was actually blocking and an IsValid to make sure the actor is valid.
Does that Multicast call everywhere? Did you print something in addition to the RemoveInstance call?
icy nacelle
Yeah I'll add a branch later, just wanted to have this as a test then move it to an equipable item.
The multicast does call everywhere, and I put a print string at the end of the remove instance return value and its valid on clients/servers even though it only removes for the server.
I'm starting to think that maybe its to do with the HISM not being replicatable?
thin stratus
The HISM won't be replicated, but you are passing the Replicated Actor, so that shouldn't matter.
The more important thing is: Is that Index the same on everyone?
icy nacelle
I believe so, even when working with just one mesh in the scene it should still always work, right?
thin stratus
Not sure what you mean.
The Index indentifies an instance of a mesh in the components array.
icy nacelle
ah, I have an idea of how to test this
thin stratus
If you do it like this ,then you need to make sure that every player created them in the same order.
icy nacelle
I got client1 to place down 5 bricks and printed the indexs when an instance was added
Not sure why the client pinged off twice?
thin stratus
Not sure either, it's your code
Figure out why the placing fails
Then you can come back to the removing
icy nacelle
But the placing isnt failing, its just printing out the index twice on the client
upper moat
@rich ridge first sorry for the late respons.second im making my own dedicated server and building ue4 from source and i'm following the github tutorial and when i get to the part(when you download the engine and its all set up you go to source and copy and paste a file and rename it to server.. and replace the text with the one from the tutorial but its out of date) im looking for that code for ue4 2.24version
DM me for faster respons
rich ridge
The latest version mentioned is 4.19 I believe, so that same version will work for latest version
jovial cipher
Why would this be happening?
Actor is set to replicated, and client spawns using server > multicast
It seems like it spawns two of them
lucid vault
Quick question about switch has authority. I used to think that authority would ALWAYS refer to the server. However, it seems that authority refers to the owning client when inside of the player character. Can someone explain this? How am I supposed to spawn the player weapons on the server if switch has authority doesn't refer to the server version of the player's character?
split drum
i think there is a better answer out there but I restrict some actions to the (dedicated) server using if (GetNetMode() == NM_DedicatedServer){}
cedar finch
I can't for the life of me figure out how to call this event and make it replicate. Any ideas? I've tried everything I know. https://i.gyazo.com/dad312f32d31838c8312fcedbbf681b1.png
winged badger
@icy nacelle how are you creating the instances?
icy nacelle
Almost the same way I'm removing them. The player controller calls a 'server place brick' event, which then goes to the manager class on the server. The manager class checks if it needs to create a new instance, or a new actor + instance, then creates one.
winged badger
and the ones that are pre-placed?
winged badger
and the server replicates what exactly HISM related?
icy nacelle
This is just used to figure out if we need to make a new instance or make a new actor then instance on that
The server basically just needs to create the brick for everybody
This is then related to if the actor is either spawned or if an instance is just added to it.
Am I making sense? Its been a couple years since I've delved into multiplayer.
winged badger
why do PlaceBrichMulti events not have the same number of pins on 1st and 2nd screnshot?
icy nacelle
That is a structure that has been split
winged badger
which part isn't working then?
icy nacelle
So the part that isnt working isnt these screenshots. These screenshots are the code for placing down the brick.
The part I'm failing to get working on multiplayer is removing the bricks.
Which is this:
winged badger
does it remove the wrong instance or none?
icy nacelle
Which is even simpler, but it doesnt seem to work for clients, just the server.
It'll even return true
Nope, wont remove any instances on the client, even if its the client deleting it - it'll just delete it on the servers version lol
BUT, when either the client or server deletes a brick, it'll return true on that string.
winged badger
btw, there is no need to RPC the reference to BrickManager on first screen ontop
server can use its own, its good
icy nacelle
Ah, for placing down a brick?
icy nacelle
Doesnt look like it
[2019.12.17-22.50.56:763][956]LogBlueprintUserMessages: [BP_HISM_Brick_C_0] Server: true
[2019.12.17-22.50.56:764][956]LogBlueprintUserMessages: [BP_HISM_Brick_C_1] Client 1: true
no "accessed none" entries?
icy nacelle
no sir
I've tried everything I can think of to debug it
I can only find one person struggling with removing instances online and I'm not sure if that issue is even related.
winged badger
can you print number of instances you have in the HISM
after you add it?
*after you add an instance
icy nacelle
Nah mate, delta sections into duration is all gucci
icy nacelle
So I just added two instances with a client - the server listed them as two.
Then I deleted one on the client, the server said there was one instance.
I deleted the second one and the server says its one.
Could this be an issue with the client not updating the array of index's?
winged badger
im more curious if client ends up spawning 2 instances in the same place
icy nacelle
ah
actually.. there was something that might point to this issue
so remember when I said when I place the first brick down, it'll decide whether to spawn the actor then throw an instance in there?
well when I put down the first block, it prints out twice for the client.....
So am I missing an all-important 'SwitchHasAuthority' somewhere?
winged badger
you didn't make the brick actor replicated, did you?
icy nacelle
BP_HISM_Brick is for sure replicated 😛
winged badger
and that would be your problem
icy nacelle
hm?
icy nacelle
So it shouldnt be replicated?
winged badger
it can either be replicate and not be spawned separately on the client
or it can not replicate in which case something else has to handle those multicasts
icy nacelle
Right, so I'd rather it only be spawned on the server
So to my issue is that I'm spawning it twice for the client?
winged badger
spawned separately at runtime makes the not replicate version little difficult to handle from BP
as you can't get the NetAddressing working
winged badger
put authority check before spawnactor<brick> call
and hope thats the only problem you have 😄
icy nacelle
like so?
icy nacelle
ah
winged badger
just can't spawn replicated actors
winged badger
whats there to be confused about
don't spawn any actors from clients inside multicasts
icy nacelle
i'm confused as to where I need to do an authority check
winged badger
how many spawnactorfromclass nodes have you pasted here?
icy nacelle
This is the only one I use.
Is this the correct place for the auth check?
winged badger
\o/
icy nacelle
Okay so it looks like that just stops it spawning for the client. HOWEVER, I have placed one in the player controller and I think it's solved the issue of two of actor spawning multiple times. It does look like there is another issue though, and I don't want to waste your time further so I'm going to dive into this new issue and see what's what. Thanks for your support so far, this is very frustrating and you've made it a lot easier to understand ❤️
Oh wait, no it hasnt. Oh well, I'll still dig on!
winged badger
now you are no longer spawning it on client
you have to teach it to register with brick manager
as it won't be added to that map
client side
gritty pelican
@icy nacelle If I am not mistaken, then on the server and clients different indexes. It kind of depends on the level loading order.
icy nacelle
They're the same indexs, I've tested it out
winged badger
they are all spawned at runtime, so thats not the problem here
icy nacelle
Plus they're not being loaded, I'm placing them in the level on runtime
hmmmm
I cannot get my head around this issue
gritty pelican
I triggered the Multicast event in which I forced all clients to delete the tree in the position that was on the server.
jovial cipher
No matter what I do when i spawn an actor on a server from the client it always spawns two of them when I multicast. i tried excluding the client with a reference to self, then it spawns none on the client. how do you properly spawns things from a client character
harsh lintel
how about the client calls a server rpc, and the server rpc calls the multicast(spawn) function? I think that should work
winged badger
if the spawned actor is itself replicated, you'd end up with 2 on clients using that
tacit totem
Hi everyone,
I am sitting in a Starbucks with WiFi.
Want to package my little mp Unreal game and create a listening server on my own machine.
Invite a friend in the same city but not in Starbucks to join session and spawn his character
into match / session.
I checked and I have several different IP address and not sure which one to have him type into
an editable text box on the main menu screen to join my session. That will fire off a console
command to have his game join me.
This is what I see on my Windows 10 laptop:
Your public IP address XX.XXX.XXX.XXX
Link-local IPv6 address: XXXX::XXXX:XXXX:XXXX:XXXXXXX
IPv4 address: XXX.XX.XX.XXX
IPv4 servers: XXX.XX.XXX.XXX
YYY.YY.YYY.YYY
Can you guys tell me which IP address would be most likely to work if any?
Thank you !!!
winged badger
none of them
without a service doing NAT punchthrough, you'd need to port foward a port on the starbuck's router to your laptop
and the public IP of that starbuck's router
winged badger
if your friend is at home, he/she can host
tacit totem
Oh really?
winged badger
setup port forwarding and give you his/hers public IP
tacit totem
Oh that is cool
winged badger
because the starbucks router will expect an answer from his IP after you send a packet to it
tacit totem
So my friend hosts at home and then sends me his IP address?
winged badger
so it will let it through
he will need to port forward the Port you're using to his local IP address on his router first
then it will work
winged badger
yes
winged badger
every router is different, but its login to it from local network with an admin password
find port forwarding menu
enter the port and public ip of the computer you're forwarding the port to
and hit apply
winged badger
no, his local IpV4
tacit totem
The one I have in SB
winged badger
port forwarding works on the scope of his home network
winged badger
yes
tacit totem
All I have to do is send him my IP address?
tacit totem
Oh I see
ok got it
TY
slap 🙂
o.k. cool so he has to know his public IP and then send that to me
Then he has to do posrt forwarding
So its 2 issues?
winged badger
yep
tacit totem
o.k. so he can just google to see his IP right?
winged badger
first one is easily solved by googling whatsmyip
tacit totem
right
bingo
ok so the only sticky point is the port forwarding?
I will have to explain that to him
Thanks for that 🙂
@winged badger So what if I can just have two friends with residential WIFI or internet test it for me? Is it a simple matter of them sending each other their IP addresses or will they have to forward their ports too in that scenario ? TY
winged badger
only the host needs ports forwardewd
winged badger
not without nat punchthrough
like running your game over steam sockets
for which you need a SteamID
tacit totem
Yeah but that is a $100 right?
To join Steamworks?
Set Up Port Forwarding
Log in to your router as admin. ...
Locate the port forwarding options. ...
Type the port number or port range that you want to forward. ...
Pick the protocol, either TCP or UDP. ...
Type the static IP address you've decided on. ...
Enable the port forwarding rule with an Enable or On option.
I Googled it
So now if the host wants several friends to join how does he forward his ports to different IP address for the same session?
Can you forward to more than one IP?
jovial cipher
anyone had the issue when you spawn a physics actor it is invisible until the client moves it?
tacit totem
I didn't do it I promise 🙂
wet oriole
Hello Guys,
Is there any menu in AWS console to show how many hours of my free tier remaining in current month?
rich ridge
@wet oriole in free tier it's free for whole month,.don't worry
Means 30*24 hours you can run
random sundial
As long as you aren't running multiple instances concurrently you should be fine for the whole month. They give out like 730 hours iirc
thick sleet
Hi, I have this peculiar problem: From time to time when calling server travel, one or more clients will travel incorrectly, and they initialization dependent on GameStateBase BeginPlay is broken, GetGameState will return null, even with delay.
Every controller calls "PlayerController::ClientTravelInternal_Implementation", "World::SeamlessTravel", "SeamlessTravelHandler::StartTravel", will bring untitled dummy world, then "SeamlessTravelHandler::StartLoadingDestination", as expected.
In correct case, after seamless travel is finished, GameStateBase::On_RepHasBegunPlay is called and everything works as expected.
However sometimes "GameStateBase::On_RepHasBegunPlay", then "GameStateBase::BeginPlay", will be called before travel is finished (!)
This case is always accompanied with warning in "UActorChannel::ProcessBunch" and 'GetObjectFromNetGUID: Attempt to reassign read-only guid'.
Delaying 'Context.SeamlessTravelHandler.Tick()' in "UEngine::TickWorldTravel" by a small arbitrary time did help, but this is hack, not a solution.
Did anyone have simmilar problem and/or knows solution/culprit? Used version is UE 4.22.3 built from source.
real yacht
QA is testing the game with clumsy software, settings are: enabled throttling with Timeframe(ms) : 500 and chance : 100%, is this solvable in ue4?
if packets are blocked from client side and sent in one batch, how can i deal with that, because if i have some RPC (pickupArmor), it will not happend, because of throttling
and i'm not sure how can this be solved? thnx
chrome bay
Don't use RPC's for the 'state' of the game. Otherwise if it gets dropped you can't recover.
@thick sleet You can't guarantee the arrival order of actors at any time, even match start-up or after travelling. Game State might be received even later than the players' pawn. You have to code around it.
Using delays to get around ordering issues is a really bad way to try and "fix" the issue, since it's not really a fix at all.
real yacht
So if i need to change armor to be visible on all clients, what should i do? If i pickup armor on server it need to be RPC
chrome bay
Well it's a very game-specific question but the armour should have a replicated variable about whether it's visible or not
If you change the state of objects using RPC's, then lot's of things are never going to work - such as join-in-progress for example.
real yacht
Understand, but how to deal than with that kind of problem?
chrome bay
Redesign the code
Use replicated variables for object state, not RPC's telling clients to change states.
chrome bay
RPC's are for one-time events that need to happen there-and-then. If a client joins a server, they shouldn't need to care about any RPC's that happened before they joined.
Well, whatever really
Notify or not
real yacht
Understand
thick sleet
@chrome bay I use no RPCs during initialization and arbitrary delays are evil. Issue is that GameStateBase on Client gets On_RepHasBegunPlay before seamless travel is finished. This happens only in certain (small) maps. What causes that in normal case On_RepHasBegunPlay is called only after travel is finished? Is execution of ProcessBunch paused or buffered?
chrome bay
What is On_RepHasBegunPlay - something you've created?
thick sleet
Sorry, ment OnRep_ReplicatedHasBegunPlay and it is function in GameStateBase.cpp that will call NotifyBeginPlay and NotifyMatchStarted on WorldSettings. It is default part of engine code.
chrome bay
Hmm these kinds of things aren't easy to debug at the best of times. I mean if the gamestate is received by the client with bReplicatedHasBegunPlay = true already, then the OnRep event will fire immediately after the actor is created (as part of ProcessBunch)
(ProcessBunch is not blocked during travel though, to answer that question).
graceful cave
is it possible to have some control over the order the client handles new information it receives?
im having a spawned actor and a replicated variable from a different object arriving at the same time, but i want the OnRep function from that variable to run before BeginPlay on that actor
chrome bay
Not possible, you have to code around it
buoyant vortex
I'm trying to build a Linux Dedicated server and the cooked build is around 10 gbs. Most of it is the Content folder. The project has a lot of art assets, but I'd assume the server doesn't need them? So is there a way for me to tell UAT to strip the things the server doesn't need?
This is the build command:
..\..\Engine\Build\BatchFiles\RunUAT.bat `
-ScriptsForProject="C:\sd\dev\$ProjectName\$ProjectName.uproject" `
BuildCookRun `
-project="C:\sd\dev\$ProjectName\$ProjectName.uproject" `
-nocompileeditor `
-noP4 `
-map=Sunrise+SpringCounty+MainMenu `
-clientconfig=Development `
-serverconfig=Development `
-serverplatform=Linux `
-targetplatform=Linux `
-compressed `
-cook `
-stage `
-package `
-prereqs `
-build `
-utf8output `
-compile `
-unversionedcookedcontent `
-SkipCookingEditorContent `
-unversioned
The server needs the assets
buoyant vortex
All of them? Even the ones that aren't used in the level?
bitter oriole
Mesh data in particular is obviously required for collision, level data is required, metadata for every single asset might potentially be required so UE4 does not strip anything
Assets that are not used in any levels will not be packaged if you set your project up correctly
if you set up a list of maps to cook in project settings, only used assets are packaged
buoyant vortex
Isn't that the same as -map=Sunrise+SpringCounty+MainMenu ?
bitter oriole
It needs to be in the packaging settings.
I'm pretty sure the command line map list is ignored
real yacht
we are using -map=MAP_1+MAP_2.... etc but yes, you need to add in packaging settings all maps
bitter oriole
Not "all maps", mind you, but the list of maps
real yacht
all maps = all that you need 😄
bitter oriole
= all assets used or not
real yacht
so yes, list of maps to inclued in packaged build
buoyant vortex
Thanks, I'll double check that
grizzled tide
hi.
Someone knows how to contact a Stun/turn server from c++? im looking how to implement peer to peer connection
fossil stratus
Hey all,
I got need a wait for players at the beginning of a match so that all start at the same time. I tried several ways to do this but either the clients call the set players ready int multiple times (when i did a multicast in the beginning) or running it on the server wich got the number of players right but failed on setting the player variables and widget... here some pictures of my recent try
Character begin play
Game State counting players and trigering n event on all clients
character bp
Play mode
hazy herald
If I make a Linux server can users on windows join it?
plush saddle
@hazy herald yes
in fact, if you are doing any hosting I recommend it, for a variety of reasons.
foggy idol
So whenever clients connecto the the game they spawn alright but they can't move
Only jump
It's like their on 1100 ping (Fortnite reference)
hazy herald
@plush saddle thanks I plan on using my own physical server to host for now unless my game gains a lot of users
shut saffron
Hey guys, how are you? I need a bit of help with some LineTrace on multiplayer.
I'm making a "pickup" part of my game and, after searching a little bit, found a tutorial using LineTrace both on client and the server. The client part works flawlessly, but the server part doesnt work.
Here's the code:
void ARunicWorldCharacter::Interact()
{
FVector Start = GetMesh()->GetBoneLocation(FName("head"));
FVector End = Start + FirstPersonCamera->GetForwardVector() * 170.f;
FHitResult HitResult = LineTraceComp->LineTraceSingle(Start, End, true);
if (AActor* Actor = HitResult.GetActor())
{
UE_LOG(LogTemp, Warning, TEXT("HIT ACTOR %s"), *Actor->GetName());
if (APickups* Pickup = Cast<APickups>(Actor))
{
UE_LOG(LogTemp, Warning, TEXT("ACTOR IS A PICKUP"));
ServerInteract(*Actor);
}
}
}
bool ARunicWorldCharacter::ServerInteract_Validate(AActor* Actor)
{
return true;
}
void ARunicWorldCharacter::ServerInteract_Implementation(AActor* Actor)
{
if (GetLocalRole() == ROLE_Authority)
{
FVector Start = GetMesh()->GetBoneLocation(FName("head"));
FVector End = Start + FirstPersonCamera->GetForwardVector() * 170.f;
FHitResult HitResult = LineTraceComp->LineTraceSingle(Start, End);
/*
* TODO: Actor is breaking the code when called from the server
*/
UE_LOG(LogTemp, Warning, TEXT("VALIDATING ACTOR"));
if (AActor* Actor = HitResult.GetActor())
{
UE_LOG(LogTemp, Warning, TEXT("HIT ON SERVER %s"), *Actor->GetName());
if (APickups* Pickup = Cast<APickups>(Actor))
{
UE_LOG(LogTemp, Warning, TEXT("SERVER PICKUP"));
Pickup->UseItem(this);
}
}
}
}
If I play without Dedicated Server, it works. When I check the Dedicated Server option, I can't pickup anything.
Any help is more than appreciated. Thank you.