will do 😄
#multiplayer
rich ridge
No problem
keen thorn
back to coding 😄
jovial cipher
is there a way to prevent an event inside a multicast event from replicating?
I know it sounds weird
random verge
@rich ridge how do you feel about PlayFab? Any feedback?
rich ridge
Playfab now owned by Microsoft. I have also evaluated this platform
It also has same problems of over pricing
It's free tier allows you only 20 hours a month I guess
To host a dedicated server
random verge
oh wow, I didn't catch that part
that wouldn't even cover testing
or maybe just barely lol
rich ridge
I tried out playfab to host the intentory and player authentication but it sucks
I can't even upload my nested JSON
Gamespark really has good features and Damm cheap but they are not updating their SDK for unreal engine
I will wait till GDC 2020 for epic games services
If they don't release I would have to do it myself
I believe Amazon is going to merge Gamespark into gamelift, and probably expand gamelift thereon
random verge
thats disappointing to hear about playfab. I'm glad you're able to give feedback.
rich ridge
No problem
random verge
actually on the dedicated server note, I noticed you can now load a dedicated server from the launcher (it's been awhile for me lol). Is it no longer required to do a source build of the engine to use a dedicated server for distro?
unless customizing the engine of course
rich ridge
Ok so can you host that on cloud. Do you want to upload the whole engine for that.
random verge
not if I can avoid it lol
rich ridge
That's a feature to test locally
random verge
ak k. so its basically best for developing on the release branch locally and then switch to an engine source build for distro?
rich ridge
Yes
random verge
k thank you. wasn't sure if they let us package headless now or not from the editor
rich ridge
Because Everytime you do small change and to test it out you don't want to build dedicated server and run it again
random verge
they've made some pretty awesome changes since I last touched things. Going to dig into the prediction modules to see whats up.
rich ridge
Network prediction is still in beta and no official docs yet
random verge
yeah its gonna be fun digging through that lol
rich ridge
It's probably to use with GameplayAbility System
random verge
I heard it was originally for that exclusively but they adapted it to be more abstract as well
rich ridge
In 4.25 epic will say anything on this. So in the meanwhile I m doing other stuffs , because I don't wanna change code to integrate network prediction
keen thorn
@indigo viper I just remembered ur question regarding multicast, you can control which player to send data to by calling multicast on the right controller on server. i.e call only for players 1,2,3 and not 4,5,6. Because 1 controllers exist uniquely only for each client this ensures the data wont get sent to other players.
@jovial cipher very hard to answer, you gotta clarify here
indigo viper
@keen thorn Sooo I have to call something like this on the server (sorry for the syntax) : GetPlayerController(id)->MyMulticastFunction() ?
unique kelp
Why would you have a multicast on a controller?
indigo viper
@unique kelp I would find it weird to do it this way... The thing is, I'm working on a competitive multiplayer game with two teams. But some data will only be sent to the team 1, and to the team 2, and I don't want the teams to receive data that do not concern them
That's why I would like to "filter" the multicast
chrome bay
You can't filter multicasts
Unless of course, the actor isn't relevant
The only alternative in this case is a client function where you iterate over the players manually and determine who to call it on
But yeah JB makes a good point that a multicast on a controller doesn't make sense anyway, controllers don't exist on other clients - you only have your own.
indigo viper
I was thinking about doing it like this, but I don't quite understand how to pass the player I want as parameter
chrome bay
If you need to pass information about one player to another it has to be done by referencing the player state object.
indigo viper
I mean, to call a rpc client you have to write it this way for example [Client, Reliable] void MyRPCClientMethod()
Hmm okay but then all clients would receive the data anyway, if we only filter the data at reception (sorry, I'm quite new with networking ^^')
chrome bay
Basically calling or having a Multicast function in the Player Controller wouldn't make sense, because Clients only know about their own Player Controller so you can only have Server/Client functions in there. I mean, you can have a Multicast, but it will throw an error when trying to call it on clients which aren't that player because the controller doesn't exist there.
I don't know what the end goal is here but anything state-related (i.e, not a one-time event) must be done via replicated variables not RPC's anyway
What is it you're trying to do exactly?
indigo viper
I will try to do it simple ^^ Well in the game there are two teams, one red and one blue. There are three players in each team, 2 rushers and 1 blocker. Each member can spawn mobs of the color of his team. But the thing is, the rushers should not be able to see or hear the rushers of the other team. They can see the blocker of the other team but not the one in their team, and all mobs.
There will be probably be a chat too, and the players of the red team should not be able to see the messages of the blue team for example
chrome bay
So what's the use for the multicasts in this case?
AFAIK you can just spawn the actors you need and mark them as not relevant to whoever isn't supposed to know about them
indigo viper
i'm saying multicast because I don't really know how to explain it otherwise ^^
I just have to find a way to prevent the data to be sent to everyone
chrome bay
If you have an actor that somebody doesn't need to know about, you can mark it as not relevant to certain players
In C++ that is
Blueprint doesn't give you that control IIRC
If it's not relevant, it's not sending any data to that connection, and it doesn't exist as far as that client is concerned
indigo viper
Okay, I didn't know about that !
chrome bay
Yep, you can override virtual bool IsNetRelevantFor(const AActor* RealViewer, const AActor* ViewTarget, const FVector& SrcLocation) const in C++
indigo viper
Oh I think that's exactly what I am looking for !
Thanks you so much xD I will give a try and tell you if this works
unique kelp
be aware that if you change the conditions you are evaluating in that function on the fly, it usually takes a few seconds to realize net relevancy has changed
not sure it will be a problem for you, if teams and positions are already decided
chrome bay
Yeah. Typically it's something that should be relatively static i.e. not changing too often
The alternative is to use something like replication graph where you create a "Team" node of some kind
But that's a tad more advanced
karmic briar
In replication graph how u register let's say tree as dormant actor and things as ai as the other 2(I forgot what it's called)
chrome bay
Well a tree probably shouldn't be even considered for replication anyway
But IIRC you just call SetNetDormancy on the tree and rep graph will update accordingly. Not sure if rep graph properly handles dormancy yet, might have updated it since though.
Actually it must do since Epic are using it on FN
karmic briar
hmmm do u have any exmaple you use in your netgraph
empty axle
Hello, it's a question regarding AdvancedSessions plugin. Can you "ask" the server which was found by FindSession, for any "dynamic" informations? Like, hey server can you give me total money that all players have now and then on the server side respond in c++ code by calculating it and sending it back? This is just a high level example.
karmic briar
ahh okay i'll check that out
empty axle
the session properties?
chrome bay
yep
empty axle
@chrome bay ah okey, thank you
meager spade
Trees in fortnite are domant till interacted with
they are replicated using Repgraph in spatializtion grid node
my repgraph has the same sorta setup
i also replicate certain pawn only things via the pawn as a dependant actor
karmic briar
@meager spade can u show example code u use to define actor such as tree for their dormancy I wanna make things like static like tree dormant and actor like ai get the other 2 type
rocky totem
@lost inlet any idea how to fix the issue since i followed the same pattern that works for changing meshes
rocky totem
On my object I'm trying to change either the mesh or the material. I have the mesh working and I was attempting to replicate the pattern for materials these are the headers
rocky totem
And here is the source. Setting the mesh works just fine however the material doesn't seem to want to change. If I call from the server I only hit the breakpoint on line 100 and if i call from the client i only hit the breakpoints on lines 100 and 115
meager spade
did you not read what i just put?
rocky totem
sorry i was typing and didnt see the ping
meager spade
you cant send a materialInstance over a RPC
rocky totem
wait but i can send a static mesh
winged badger
thats an asset so its fine
meager spade
MaterialInstance is created dynamicallyh
winged badger
can be uniquely IDed by a path
rocky totem
so couldi theoretically send a umaterial?
meager spade
yes
rocky totem
ok so it's just that it's a material instance thats the problem
meager spade
thing is, the object has to be able to be referenced
rocky totem
except aren't those created and stored as separate uassets as well?
meager spade
either via the package or net name stable replicated
the material exists on all as an asset
MaterialInstance is created
dynamically
oh hmm
unless that is a packaged material instance..
maybe i read it wrong, cause i was helping someone not long ago who was trying to send a dynamic material instance over RPC
rocky totem
like the material's im referencing are all created i the engine and save and packaged out
ok brainstorm
if just had it set to UMaterial
could I use one of the material instances I created in the editor
would that create a larger amount of overhead
rocky totem
Dev Editor
meager spade
cause you might be skipping out of the breakpoint
if its optimized away
always always debug in Debug Editor
rocky totem
Ok but doesn't it need to run in both to work when packaged
rocky totem
fair
meager spade
so debug with Debug Editor
rocky totem
rebuilding now lets see what it has to sya
meager spade
cause Dev Editor optimizes stuff
it can skip breakpoints
if the code is optimized
rocky totem
ahh so it may actually be running and noot doing anything and just skipping the breakpoint
rocky totem
ok so it's actually making it all the way through so let's see if i can figure out where the problem is now
and according to the locals the pointer is correctly being passed without being dropped
i think i may have found it
thanks for the i'll rmb to check the build type
well i found something else interesting
CurrentlyDisplayedMaterials.Emplace(InElementIndex, InMaterial); to keep track of which materials are in use where for replication i use this
however it doesn't cause the replication to fire
meager spade
is that a TMap?
rocky totem
yes
meager spade
not supported for replication
meager spade
🤷 somewhere probably
if you want a TMap like thing
use a TArray with a custom struct
holding your two elemnets
rocky totem
i'm justgunna do exactly that
meager spade
Index and Material
glacial shuttle
oh didn't even thing about this I have been debuging in dev editor this whole time
rocky totem
i was already writing it
lmao the structs are back
they can't run forever
do i need to do anythign special to the struct like replicating all of it's properties
glacial shuttle
don't think so
narrow prairie
i have a strange issue: and i dont know where to look. I have a enemy and some npcs. they react all nice and well. however when i move towards the action on client . damage calculations not beeing done anymore. so the actors stop dying. when the server moves in towards the action . suddenly everything works again as intented
when i simulate i dont have any issue
Is anyone familiar with this kinda behavior and guide me in the right direciton where to look
meager spade
properties need to be marked with UPROPERTY()
in a struct to be serialized
if you dont want something to be replicated in a struct put UPROPERTY(NotReplicated)
rocky totem
thanks for everything kaos and being so patient with me
jolly siren
pseudo iris
sorry, I was asleep, does anyone know how to get a client's player state for widgets?
OH i figured it out
if I put a delay in at begin play it works
now that's done, does anyone know how to increase a player's score when he kills an opponent?
I have code that recognizes it but it does it for both the server and client
pseudo iris
It's still doing this, unsure how to fix
odd scaffold
Hello, I am trying to compile the aws-c-event-stream with bash with this command cmake -DCMAKE_INSTALL_PREFIX=~/aws_deps -DBUILD_SHARED_LIBS=ON
but I get these errors
CMake Error at CMakeLists.txt:36 (include):
include could not find load file:
AwsCFlags
CMake Error at CMakeLists.txt:37 (include):
include could not find load file:
AwsSharedLibSetup
CMake Error at CMakeLists.txt:38 (include):
include could not find load file:
AwsSanitizers
CMake Error at CMakeLists.txt:74 (aws_set_common_properties):
Unknown CMake command "aws_set_common_properties".```
I tried googling but to no avail
I succesfully compiled `aws-c-common` and `aws-checksums` but got stuck at `aws-c-event-stream`
Does anyone have ideas?never mind i got it
thin stratus
@odd scaffold Don't think a lot of people use AWS and if they do, compile that library by hand.
You might be better off asking on the AWS fourms.
odd scaffold
Hmm.. thanks
odd scaffold
I have found the solution in the comment section of this video:
https://www.youtube.com/watch?v=48P4fjLP1vU
I got pretty lucky and the guy posted a solution couple of hours ago
drifting geode
Hi guys, would somebody smarter than me please give me a hint how to fix this. I spend many hours trying to figure it out and am cluelss :S
I need to replicate a few variables that are set in the AI event graph. They are used like i.e. the one marked in red below. The only way I can figure out how to do this is to use RPC to get all the variables back to the BP_AI and set them to multicast there but the editor freaks out when I do that and doesn't work in PIE anymore (Ai won't walk, takes forever to load, etc.)
Also for some reason nothing happens when I set the variables to replicate in the anim blueprint. They are not updated on client dispate them changing on server.
cunning shoal
hey guys... so i managed to get my FPS/TPS camera thing to work in multiplayer using get control rotation for the FPS camera mode..... now im working on the ADS mode, which smoothly slides over to the camera on the gun - and it works on the server, but the client is hit or miss (no pun intended)
i notice it will always work on the side-side movement, but up/down sometimes works and sometimes doesnt
any ideas? when the up/down breaks - shooting makes the bullets go in the same position up/down wise, only accounting for side-side movement of your mouse
tawny mason
Hey guys any idea on how to handle a disconnect from a session on the client side ?
thin stratus
GameInstance has OnTravelError and OnNetworkError
tawny mason
yes, but the engine is still taking me back to the startup map, is my only option to do an open level before the engine does to take him elsewhere ?
chrome bay
it'll always take you to the startup map on a disconnect
think of it like returning to the menu
rain coral
If I parent a Character to some object, the character stops replicating movement. Does anyone know a way around that?
chrome bay
When you stay stops replicating movement how do you mean?
Prediction probably won't work but the attachment should, that comes down via AttachmentReplication
rain coral
It doesn't send OnRep_ReplicatedMovement, for example, when it's attached to something
rain coral
Ahaa. Does that include the updated position/rotation whenever it changes on the server?
chrome bay
It should I think, sometimes I think OnRep_AttachmentReplication() also calls ONRep_ReplicatedMovement itself, but essentially all the location/rotation info is treated as "relative" to the attach parent from that point on
rain coral
I see, will check it out then, thanks!
chrome bay
np's
rain coral
Yee works as expected 👍
barren mirage
Hey!
Has anyone successfully been able to use the Online Subsystem Steam, with a listen server, and a P2P connection, in 4.24? I can't seem to get it working, I get this warning, in packaged build:
ModuleManager: Module 'SocketsSteamSockets' not found - its StaticallyLinkedModuleInitializers function is null.
I have run though the whole setup
Have anyone experienced this?
Thanks !
grizzled stirrup
HealthComponent = CreateDefaultSubobject<UHealthComponent>(TEXT("HealthComponent"));
HealthComponent->SetIsReplicated(true);
Is the second line necessary if the actor the component is being created on is replicated?
I have this on all my health components but have always wondered if it is needed
winged badger
bReplicates = true in constructor is sugficient
And unless the component has replicated members and/or RPCs there is no need to replicate it at all
Being on the CDO its net addressable as long as its actor is
grizzled stirrup
The health component in this case has replicated health properties. So bReplicates = true should be set in the owning actor? (the actor that the lines above are written in)
winged badger
In components constructor
grizzled stirrup
Oh right got it thanks!
grizzled stirrup
@winged badger warning C4996: 'UActorComponent::bReplicates': This member will be made private. Please use GetIsReplicated, SetIsReplicated,
It's fine to call SetIsReplicated() in the constructor of the component right?
Never usually call functions there
grizzled stirrup
Thanks
astral fossil
to reassure, even tom Looman does that on a udemy course (and he worked as an Epic's engineer)
also on a health component =p
meager spade
calling functions is no different to setting properties, if the object exists.
chrome bay
@grizzled stirrup It's SetIsReplicatedByDefault() now in constructor
stiff echo
Actor->SetActorTransform(Record.Transform);
It breaks replication for few seconds? Does someone know why?
Do I need to change teleport type?
eternal lake
@stiff echo Have you tried other methods like setting worldLocation and worldRotation separately?
eternal lake
I don't think that's the right way to go about it
stiff echo
as described in documentation of UCharacterMovementComponent
eternal lake
Because the CharacterMovementComponent has support for making minor network adjustments to replicated actors, which would require replicated teleports
It may be worth digging a bit within there to see what you can find about their implementations.
stiff echo
I would be fine with default smooth correction but it is way too big like 10 sec or even more
eternal lake
Are there any important overloads of SetActorTransform you are missing?
stiff echo
I do not understand what you mean. I have save/load system. And on load I want to set saved position to actor.
eternal lake
the method SetActorTransform
are there any overloads of that method (those that have different parameters) that you have not seen?
(I don't have the UE documentation open right now)
stiff echo
I see only one:
bool SetActorTransform
(
const FTransform& NewTransform,
bool bSweep,
FHitResult* OutSweepHitResult,
ETeleportType Teleport
)
But I think it is controlled completely by movement component
eternal lake
Okay, you didnt't specify what values you are passing in for the other 3 parameters, you only told me you're passing in a transform
stiff echo
I use default: (const FTransform& NewTransform, bool bSweep=false, FHitResult* OutSweepHitResult=nullptr, ETeleportType Teleport = ETeleportType::None)
eternal lake
So you're trying to teleport an actor, but you're using a teleportType of none?
stiff echo
I tried all possible options. Does not have effect.
Teleport defines physic state. Has nothing to do with replication
eternal lake
I assume replication works for you outside of this transform setting you are doing on load/
grizzled stirrup
@chrome bay Thanks! Is there a reason to ever use SetIsReplicated() over that or is that the new standard?
chrome bay
That's the new standard, you'll get a compiler warning/startup warning calling it anything else in the constructor
SetIsReplicated() is for use at runtime now
grizzled stirrup
Many thanks
Wiill change my classes over to that new standard 🙂
Though I don't get the warning in the constructor
stiff echo
@eternal lake yes, it works perfectly, but after load it stuck for 10 seconds
grizzled stirrup
Unless I directly set bReplicates
stiff echo
@eternal lake After correction applied I can observe replication again.
eternal lake
hm
meager spade
virtual void ForceAmmoNeedSync() { MARK_PROPERTY_DIRTY_FROM_NAME(AKaosWeapon_Ranged, CurrentAmmo, this); }
o_0
Params.bIsPushBased = true;
DOREPLIFETIME_WITH_PARAMS_FAST(AKaosWeapon_Ranged, CurrentAmmo, Params);```awesome i like the new changes
eternal lake
Doing some reading:
CMC implements auto movement replication, but if you're setting a transform directly, this may not directly be replicated to the server.
You may need to look into sending this transform set to the server as well @stiff echo
stiff echo
@eternal lake I load it on server, the problem is to notify clients
@eternal lake I think the only way to achieve such simple functionality is to extend CMC with teleport ability
eternal lake
I think what's happening is exactly that
the client is not being updated
because the setTransform call should be called from the client, not the server
can you pass the information gained on load to the appropriate client and then have the setTransform call be done there?
This seems like it could be useful to you:
https://www.reddit.com/r/unrealengine/comments/4xw2dj/character_teleporting_to_a_location_not_working/
stiff echo
@eternal lake I can implement it. But my main question is this expected behavior?
eternal lake
I am not experienced in Multiplayer
meager spade
normally you tell the server, server will multicast the position
this will update all clients and server with new position
you cant just teleport a client, server will correct it
stiff echo
@meager spade exactly I do it on server and my expectation is that it will be replicated to clients. And actually it is but with huge delay.
meager spade
it wont
you have to multicast it
otherwise like you said
it will be a stupid delay
stiff echo
eternal lake
how do you multicast a setTransform from a server by hand?
meager spade
i am familiar with it
meager spade
client tells server, server adjusts transform, server sends multicast, adjusts transform
2 rpc's
easy
i do it for my monsters when teleporting them across the map
eternal lake
what is the code to send a multicast?
meager spade
c++ or bp?
eternal lake
c++
stiff echo
I save/load entire scene, do I need to wright custom code for every property?
Or transform is special case because of CMC?
meager spade
{
SetActorLocation(Location);
MulticastActorLocation(Location);
}
void MulticastActorLocation_Implementation(const FVector& Location)
{
SetActorLocation(Location);
}```replace location with transform/rotation, w/e
stiff echo
FPS template
stiff echo
true
meager spade
FPS template doesn't handle replication
eternal lake
Thanks! I'll have a read and see if I can learn me something
meager spade
in a sense
stiff echo
So I need to replicate it to every client.
meager spade
replicate what?
stiff echo
Or even send SaveFile to all clients and load positions there
stiff echo
only if it is deleted from scene
meager spade
if its replicated then all clients will see it
stiff echo
otherwise just to update position
meager spade
why would it be deleted from scene from a save ?
stiff echo
No, I save, then something happens on scene, some actors are deleted, and I load save game.
So I do not respawn all actors.
But now I see it is not good idea. It is easier to delete them all and spawn again.
Then I do not need to write any code.
ember slate
How do I access the GameSession from inside the gamemode blueprint?
eternal lake
GameSession is a variable.
You should check if it is public in the engine code for AGameModeBase
'A game session exists only the server, while running an online game.'
It will not be accessible from the gamemode blueprint
you will need to obtain it from the server
polar lotus
Could anyone help me set up a replication graph?
meager spade
i really doubt anyone has the time to help you do that
do you really need a rep graph? do you have a game with 30+ players and 25000+ replicated actors?
meager spade
check out ShooterGame
it has an example repgraph
which could help you get the ball rolling
polar lotus
There is a replication graph in the plugin source called BasicReplicationGraph
How can I utilize it?
meager spade
you really don't want to use that
its basic for a reason
honestly check out ShooterGame it's basically the same as what Epic used in fortnite (minus a few fortnite specific stuff)
polar lotus
Alright
meager spade
i have my own custom one, but i spent 3 days writing it
meager spade
sure
meager spade
make sure you set up spatialization properly
doesnt matter
it will help the listen server by reducing his load
if its a big map
but 25 people on a listen server
is gonna be taxing on the poor host
hopefully he has a powerful internet connection 🙂
meager spade
even call of duty games of a couple years ago, 12v12 was a pain
or w/e groundwar was
hoary lark
minimum requirement: 150 Mbps fibre?
meager spade
maybe 9v9
polar lotus
Do you think 10 would be bad
meager spade
10 is fine
but i honestly wouldnt worry about repgraph
but if you want to do it to learn, sure
but its not needed
meager spade
with only maybe 2-3000 replicated actors and 10 players, it will be minimal gain
but yeah try it
polar lotus
ah I see
meager spade
we have 8 player co-op game
polar lotus
it couldn't hurt anything
meager spade
and we havent noticed any major issues
polar lotus
I'm working on a TPS
meager spade
and we have around 1500 replicated actors
polar lotus
But I have some other modes In mind
polar lotus
Alright then
meager spade
once you think "yeah i need it!"
polar lotus
I'll put it on the backburner for now
meager spade
i would, honestly, make a playable game first, test it, etc. then optimize
repgraph can be slotted in relatively easy at anytime
with minimal (and i mean zero) changes
meager spade
not everything has to be c++
polar lotus
How am I supposed to manage blueprint classes from C++?
meager spade
you don't need to put everything through the repgraph
meager spade
AddInfo( AKaosWeapon::StaticClass(), EClassRepNodeMapping::NotRouted); // Handled via DependantActor replication (Pawn)
AddInfo( AKaosInventory::StaticClass(), EClassRepNodeMapping::NotRouted); // Handled via DependantActor replication (Pawn)
AddInfo( ALevelScriptActor::StaticClass(), EClassRepNodeMapping::NotRouted); // Not needed
AddInfo( APlayerState::StaticClass(), EClassRepNodeMapping::NotRouted); // Special cased via UKaosReplicationGraphNode_PlayerStateFrequencyLimiter
AddInfo( AReplicationGraphDebugActor::StaticClass(), EClassRepNodeMapping::NotRouted); // Not needed. Replicated special case inside RepGraph
AddInfo( AInfo::StaticClass(), EClassRepNodeMapping::RelevantAllConnections); // Non spatialized, relevant to all
AddInfo( AKaosPickup::StaticClass(), EClassRepNodeMapping::Spatialize_Dormancy); // Spatialized and moves, dormant once static.
AddInfo( AKaosGABuildingActor::StaticClass(), EClassRepNodeMapping::Spatialize_Static); // Never moves, always static.```like this for example
polar lotus
oh I see
meager spade
sure
polar lotus
it's all BP based
meager spade
kinda
polar lotus
so it wouldn't break this plugin?
pseudo iris
how can I test connecting to two servers in unreal editor?
I set up a server list but I can't find the server
pseudo iris
do I need to add anything to DefaultEngine?
actually I got it to work
clicking the server button not working
actually I got THAT to work too
past bear
Repnotify and arrays - I assume these cannot be used together?
bitter oriole
They can, AFAIK
chrome bay
yeah I use em
past bear
yeah, I colleague of mine tried it, and it doesn't seem to do anything
array of playerstate references did not work, simple integer did
chrome bay
Sometimes you get more than one RepNotify call for them. Once for one the size of the array changes, and again for when the items within it change
Pointers in particular since you can't garauntee rep order etc.
Not sure if that's relevant in this case
past bear
testing atm - in his case he's not getting a Repnotify on the host if the array size changes (e.g. adding an element)
he does if a value changes
chrome bay
huh that's odd
Oh wait, host as in server right? In CPP at least the rep notify won't get called automatically on the Server
In their infinite wisdom Epic decided to make BP/CPP different in that regard... unsure why
past bear
we're in BP - it usually does get called
chrome bay
But in CPP anyway if you want a repNotify to be called you gotta call it manually
past bear
just not in CPP
chrome bay
Ah okay, maybe BP behaves differently
past bear
wonder if it's because a native function is technically making the change
if you add an element to the array, a CPP function does it, rather than if you change a variable value it happens in BP directly
chrome bay
Ultimately AFAIK if the property is changing at all, it should trigger the notify, whether it be size of elements.
But IDK if maybe it behaves differently in BP because.. reasons.
past bear
aye - we've sent an e-mail to the other team to see if they've been fiddling with replication because it seems counterintuitive
sleek current
How can I draw debug strings for each client separately?
teal python
I've noticed that when running multiple instances from the editor (client + server), that the behavior is different from manually running each instance as standalone. This is causing problems. Is there documentation anywhere outlining what the editor is doing? Does anyone know where I can look in the engine source code to find out?
rose egret
how do I make client only component in C++ ? in other words I have an C++ actor which is replicated. this actor has two SkeletalMeshComponent that I only need them for rendering. I just want to save memory for dedicated server and do a little optimization since I have nearly 10,000 of these actors on server
teal python
set the "replicates" property of the component to false
this should be the case for all components by default
since replication is an opt-in procedure
the one exception is the Character class
that's been set up with a lot of stuff and to replicate by default
sleek current
How can I make my component to work literally seperately for each client so each client has its own variables, ticking things etc?
I set the bReplicates to false and checked the Role if its < ENetRole::Role_Authority
and also tried to use Client, reliable rpc's
still not working, other clients see the work of the same scene components
glass plaza
Is there a way to check in runtime if a component is properly replicating?
worthy perch
I guess just send some sort of RPC.
pseudo iris
What's the best way of starting a new multiplayer match when the last one ends?
pseudo iris
yeah
meager spade
did you solve it? cause i realised you was getting the issue cause you was trying to create it on server
pseudo iris
i've solved it for the most part, I'm just going to ignore the errors
meager spade
dedicated server cant create widgets
and begin play is called on dedicated server and clients
you need a switch authority node and only spawn the widgets on remote
pseudo iris
what about on the menu?
pseudo iris
well it's on the playercharacter so
meager spade
right
but that is also called on server
so server will try to create a widget
and it will fail
just put switch authority and on the remote branch, do your widget code
and you will have 0 errors
meager spade
right but you are still creating it on server
why have a client rpc
honestly
its easy
pseudo iris
not for me dude
meager spade
2secs
so just connect that remote pin to delay
remove all the stuff i scribbled out
pseudo iris
oh it fixed it
thanks
that also fixed it not setting my mouse cursor in-game too
just set a switch has authority network on
gray scroll
why does event on possess get triggered twice on clients?
this is inside playercontroller
gray scroll
exactly... i m spawning players on server via game mode
but event on possessed gets called twice
meager spade
maybe you are possessing twice
gray scroll
nope
meager spade
have you printed the pawn?
gray scroll
it prints once only there
meager spade
to see what the value is
meager spade
show me your logic
meager spade
and what calls SpawnCharacter Pawn
also do you have Default pawn set in your game mode?
if so remove it
gray scroll
this is run on post login
and eventually calls the spawn player function
i just removed pawn from gamemode
let me try now
nope still spawns twice
meager spade
hmm
spawnplayer is that in gamemode?
not sure why its a server rpc
everything in GameMode is server only
clients cant ever access it
meager spade
yeah without seeing properly whats going on and debugging
i wouldn't really know
all i know is out OnPossess only fire ones
so you are doing something odd
somewhere
gray scroll
it fires twice when i package a build
and join the server
runs once on dedicated server checked
meager spade
only fires once for me
on dedicated and listen server
why you using OnPostLogin
to spawn the pawn?
i mean this works fine for me and prints only once in OnPossess
hybrid wren
Hi there, I'm back after many month away from UE ... and remains a begginer. I'm trying to run my project with dedicated server, and got an issue with my character. My animations are shaking ... Do I have to enable something special for animations ? My project is not very complex atm, i'm using a basic animation blueprint. Anybody had similar issue ?
sleek current
How can I draw debug strings so each client see it's own values?
hoary lark
Turn off "use single process"
sleek current
But how can I do that when it is actually multiplayer :P?
hoary lark
you find the option, and then you click on it? 😄 I'm just making a guess what the problem probably is based on everything else I've seen you say in here recently about that. If you are running packaged builds with separate EXE's already then my guess will be wrong. show some screenshots or video clips of what's going wrong for you if you want more help from someone, the question is far too vague to try and give an exact answer
chrome bay
If the game is running separate EXE's it's not sharing the same process anyway
To save iteration time the engine shares a lot of memory/processes in PIE multiplayer. That option disables that and spools up new instances of the game as completely separate processes. It's like clicking the packaged .exe multiple times.
sleek current
Each client can have those values when players subscribe to interatable components
The problem is when I run the multiplayer the strings show the same values for first subscribed player to it
I want it to be separately for each player
hoary lark
well ok, so are you launching built game EXEs or are you playing in editor? @sleek current if you are playing in editor, have you verified it is not caused by shared memory from running in single process?
zinc tree
I've been having trouble with replication for the past week or so that I've probably spent 20+ hours trying to fix and I'm almost to the point of just starting everything over from scratch. I'm creating a multiplayer game with an Archer character, and I have had an immense amount of trouble with getting arrows to shoot correctly on all clients. I spawn the arrow projectile out of a bone on his hand, where I have a static mesh arrow attached that I make visible/invisible when he draws an arrow and shoots. I am running a dedicated server and 2 clients, yet the 2 clients and the server have a different idea of the world transform for the socket, so the arrow is spawning differently on all clients. I fixed this problem by just having multiple custom events so that the client always tells the server where it should spawn the arrow. This brought me to a new problem where the server and client have different versions of the arrow when it is shooting. The arrow is spawned on the server, and when I use a non-dedicated server
and look at what the server sees, the arrow spawns backwards and the fletchings are facing the target as it flies in the air, yet on the clients screen it is facing the correct way. While this alone isn't a big problem because it's just a straight projectile so the hitbox doesn't change much, it becomes a larger problem when put together with another issue that I am having where the rotation of the arrow isn't changing while it is in the air. I have the "Rotation Follows Velocity" checked off, and it works on the server (albeit backwards), but it isn't being replicated, and on the clients' screen, the arrow just keeps the same rotation throughout its flight path. This changes its hitbox slightly, but the biggest issue with all of this is with the character's special ability. His ability is an arrow volley, which spawns in 20 arrows in a random box around the initial arrow while it is mid air. If I do the same thing I did with the primary fire and have the client tell the server where to spawn the arrow, because the initial arrow never changes its rotation, the new arrows are spawned with that same initial rotation, despite where the arrow is in its trajectory, so they fly off weirdly instead of following the same path. If I instead have the server figure out where to spawn the arrow, the new arrows spawn backwards and fly back towards the character because for the server, the initial arrow is spawned backwards. I've tried many different ways of getting it to work correctly, but no matter what I replicate or how I spawn the arrow, I haven't been able to get it working correctly for all clients.
winged badger
i'd probably go with the simplest replication that completely describes the arrows flight path -> starting location + initial velocity
have the projectile movement components take it from there
there is no way you'll ever sync animations well enough to be able to shoot from a bone socket
zinc tree
that is all im doing
winged badger
you can try to IK the thing into place on simulated versions of the character
zinc tree
I have the client get the transform of the static arrow attached to his hand, and then the projectile arrow is spawned at that transform
winged badger
juggling lag becomes a challenge though
to have it look seamless, simulated proxies, that are already late, would need to run IK then shoot
winged badger
i would not replicate the arrows position, velocity, or anything of the like
just its initial velocity
winged badger
and then set it on projectile movement component on BeginPlay
zinc tree
and then it is replicated
winged badger
yeah
zinc tree
dont do that?
winged badger
but you do have a lot of network traffic
where you in theory need just one replicated vector on arrow projectile
zinc tree
?
winged badger
(not accounting for lag compensation here)
zinc tree
so i should spawn the arrow on all clients?
winged badger
no
you should spawn the replicated arrow on server, and have a replicated vector in it
that vector being set as projectile movement components velocity onrep or during beginplay
zinc tree
isnt that the same as what i am doing now?
I spawn the arrow with projectile movement
and it is replicated to the clients as it flies
except that replication isnt working
and it isn't replicating rotation
zinc tree
what
winged badger
you do know what you aimed at, no
zinc tree
yes, but enemies can move
winged badger
there are ton of suggestprojectilevelocity
zinc tree
the velocity shouldn't change
or well
the speed shouldnt change
It's set at a constant initial speed
winged badger
what are you replicating in the arrow projectile?
zinc tree
I've tried a lot of different combinations, but right now I have the static mesh and the projectile movement replicated
winged badger
why?
zinc tree
What do you mean why?
winged badger
why do you replicate either of those?
zinc tree
Do I not have to?
winged badger
nope
zinc tree
what should I replicate then?
winged badger
you just need the initial velocity
put it as a member
and set it on projectile movement
zinc tree
What
zinc tree
I'm so confused
winged badger
owning client or server calculate a shot
zinc tree
If I want the client to see the arrow
zinc tree
Oh ok
zinc tree
I am
zinc tree
Ok
winged badger
and can be referenced over network without being replicated
zinc tree
So why isn't the rotation being updated on clients?
winged badger
(unless we're talking non-replicated actor spawned at runtime)
zinc tree
I think if we fix one problem the rest won't matter too much
winged badger
so
say your server calculates a shot
it sets the InitialVelcotiy vector
to what the function told him is correct launch velocity
winged badger
everyone uses OnRep to set velocity on ProjectileMovementComponent
zinc tree
I never change it
zinc tree
Why would that help the rotation?
winged badger
getting rotation working is trivial, in most cases
zinc tree
I have shooting working
winged badger
and each client should handle its own
zinc tree
The path the projectile follows is fine
It's just the rotation I need to fix
The velocity is fine
Why would I need to change any of that?
winged badger
velocity length to come from the strength of the pull
zinc tree
I don't have variable pull
It's a constant speed
The direction vector is just forward
So when it is spawned
It shoots forward
winged badger
so how do clients get that velocity?
zinc tree
They don't need it?
Why would they need the velocity?
All they need is the arrows position and rotation
winged badger
because their projectile movement is independent
thats the entire thing i was trying to suggest
winged badger
if the clients have the location and velocity of the arrow
they can calculate every step of its path without any further info
accurately
zinc tree
So I should spawn the arrow on clients?
winged badger
they don't need any more replication
no
you should just try to spawn an arrow that has the velocity in a replicated variable
zinc tree
So why are they calculating the path?
winged badger
that way arrow as soon as its spawned on clients
knows the position and velocity
rest is just ballistic shot physics
that they can calculate individually
and which projectilemovementcomponent does
zinc tree
So I shouldn't use projectile movement?
Maybe I'm stupid but you just keep confusing me more
winged badger
1 - server knows the direction of the arrow and location of the arrow
zinc tree
If the arrow is spawned on the server
winged badger
2 - server spawns the arrow, and sets its velocity on its ProjectileMovementComponent to be direction * speed
at this point arrow flies to wherever it would normally fly to on server
zinc tree
Yes, thats what I have now
winged badger
3 - server sets the direction * speed into a replicated variable, with RepNotidy
4 - the arrow itself is replicated
client :
zinc tree
so when the arrow is replicated, wouldn't the projectile movement be replicated as well?
winged badger
1 - receives a bunch telling it it should spawn an arrow at given location and also receives all replicated variables in that same bunch
2 - client spawns the arrow
zinc tree
ok, so the client should spawn its own arrow
winged badger
it has to spawn an actor whenever a replicated actor is spawned on server
zinc tree
ok
winged badger
and it does that under the hood
zinc tree
thats what i thought
winged badger
3 - arrows replicated variables are set
at this point client's arrow is in correct location, it has the correct velocity in a variable you replicated, but not on ProjectileMovementComponent
winged badger
3 - client uses either OnRep_LaunchVelocity or BeginPlay to set the ProjectileMovementComponent's velocity to the replicated launch velocity value
at this point clients arrow is at same location and has same velocity as it had on server half the ping time ago
and that is it
zinc tree
thats it?
zinc tree
ok, ill try that i guess
winged badger
you let client's ProjectileMovement handle the client side
as it will do exact same calculation as the server
you don't need to correct it, you don't need to replicate any of the arrow's components
and also shouldn't
zinc tree
so what about for the volley ability?
that one spawns arrows while the velocity is changing
short gulch
Sooo, I'm just gonna repost here because I asked in the wrong channel yesterday so:
Hullo, still trying to figure multiplayer stuff out.
I can't seem to get an actor to replicate properly. When the game starts and for a few seconds while a player is pushing it around, its location and rotation is replicated just fine, but after a while it just isn't, and both players see the actor in different locations. I'm using a hover blueprint that I followed a tutorial for in single player, if that matters.
dark edge
@short gulch do you have replicate movement turned on?
short gulch
yes
dark edge
I take it it's a physics enabled object?
short gulch
? like I'm using another blueprint for its physics, but I'm not actually simulating it
dark edge
what do you mean you're using other blueprint force physics question mark how exactly do your characters push the object around?
short gulch
yeah, and the players collide with the objects
dark edge
What I'm asking is, how exactly is the object move? Did you make a movement component for it, do the characters move it from there logic? How is it moved.
short gulch
either a blueprint is adding force to it, or a player is colliding with it to push it around.
dark edge
So it is simulated physics.
short gulch
if that's what you meant 😓
dark edge
It is what I meant because it makes a huge difference how you are actually moving the object. Do you have replicate physics to autonomous proxies turned on?
short gulch
yes
dark edge
First you should test that the server is authoritative over the position, by just moving the object on the server and checking that it gets replicate to the clients correctly.
Once you can confirm that works, you want to look in the project settings for the physics replication settings, which is where you find tune how much error is considered acceptable, etc.
short gulch
well for the first test, it didn't replicate correctly.
dark edge
With replicated physics, the three simulations, those on the server, first client, and second client, are always going to be slightly out of sync. Those physics replication settings determine how much correction should be applied when the clients receive the server authoritative physics state
dark edge
Start with getting forces are impulses applied on the server to replicate out correctly. as long as replicate movement is turned on and replicate physics to autonomous proxies is turned on and, I think it has to be like this, the root component of the actor is what is simulating physics, it should work.
Is the root component your physics body?
short gulch
what do you mean?
dark edge
On whatever actor the characters are meant to be pushing, is the top level component the one that is simulating physics? It will usually be a box or sphere collider.
short gulch
like I see the root component, but what do you mean that is simulating physics? like I use the blueprint on that instead of my mesh component?
dark edge
Is the mesh component the part that is simulating physics?
short gulch
yes
dark edge
All right then you should either make that mesh the root component or add a collider above it in the higher key to service route. typically the simple shape gliders like box, sphere, capsule, are much better to use for physics than a static mesh.
Don't quote me, but I'm pretty certain that the physics body has to be the root component to replicate correctly.
short gulch
okay, how do I do that, do I just delete the default scene root or
dark edge
If the mesh hasn't been scale, you should just be able to drag it over the default scene root and it'll have an option to replace it.
short gulch
ah done
dark edge
Now just a like a five second timer after begin play, do a switch has authority, and then fire and impulse on the server. It'll look like s*** on the clients, but it should follow the movement from the server.
Sorry if it sounds like I'm having a stroke, I'm using voice to text.
dark edge
Sorry stepped out for a second. Yes on the server only try to add just a pretty big impulse that'll move the object. You're just doing this to test if things would be replicated correctly
half jewel
i have this problem with netDormancy and server RPCs. i recently found a way to improve performance vastly by setting certain actors to network dormant when they are not needed for a time during gameplay. But at any moment they need to return to the game. its sort of like a poor man's actor pool and it works great... my problem is the client needs to send RPC's to the server (related to the actor of course). in this example the player is updating the name of the actor before returning it to play, but the RPC never goes threw because its network dormant!
how can i make server RPC's go threw for actors that are networkDormant ?
lime lion
Hi, I'm looking for a good backend solution for a persistent multiplayer system - I was looking at using SpatialOS however it is not supported on Android (I'm making a quest app). Does anyone have any recommendations? Is Playfab a mature solution?
plush wave
Can you replicate an FTimerHandle?
winged badger
no, and you also shouldn't
half jewel
u have been defeated twice now and ur still say for be a things?? tisk tisk we shall see.
meager spade
@half jewel ?
sleek current
Im looping through this method UFUNCTION(Client, Reliable)
void DrawDebugStrings(AActor* Player); with for each player, then inside I draw debug strings. How can I show each player his own debug strings and dont replicate other players debug strings?
bitter oriole
Debug strings are not replicated
sleek current
What ever they are, how can I achieve what I want?
bitter oriole
Don't call that function for remote players
sleek current
how can I do that?
bitter oriole
Check the owner.
sleek current
Could you explain? Because when I see check the owner I imagine if(GetOwner()) which is not the thing you mention 😛
bitter oriole
Check if the owner is not the local player
winged badger
why would you rpc debug information to start with?
bitter oriole
Yeah, makes no sense
Just do it on tick in the pawn if IsLocallyControlled() and it's over
final swallow
is there any way to know on the server side when an actor was fully replicated, on the initial replication?
bitter oriole
Have the clients send you a reliable RPC to notify you of full replication.
final swallow
that's what i thought of doing, was wondering if there was something built-in in the engine that i could use
bitter oriole
Not that I know of
winged badger
there is internal ack somewhere
in any case you can't resend an actor
so not entirely sure what you're trying to do
final swallow
i have an AbilitySystemComponent on my PlayerState, so I can't start the match before it fully replicates. So i'm trying to figure out how to know that all players got their ASC
i found AActor::PostNetInit, might be what i need (posting here in case anyone else is interested)
twin juniper
LogNet: Warning: UNetDriver::ProcessRemoteFunction: No owning connection for actor SourceMovement_C_0
What does that mean?
trim elm
Hey folks, I'm trying to have my player controller spawn another Character (not the player character) that it then owns, and I want it to be relevant only to that player controller. This works by setting the bOnlyRelevantToOwner flag and then overriding GetNetOwner() to return the player controller pointer. Seems to work fine with only one player connected, but when a second player connects to the server the server crashes with some kind of stale pointer in the actor channels map. Anyone ever tried anything like this?
winged badger
@final swallow you also have OnRep_PlayerState in both Controller and Pawn
although not 100% reliable (when a packet is lost) increasing the PS NetPriority from default 1 to over 3 will have PlayerState replicate before the Pawn, too
trim elm
Hrm. Think I found my problem. Looks like without the RF_Transient flag the character was getting destroyed (though for some reason only when the 2nd player connected. Strange!)
winged badger
that seems like you went out of your way not to do things using existing game framework @trim elm
final swallow
@winged badger thanks, i will look at it
winged badger
only relevant to owner won't do much unless you call SetOwner() on that object server-side
and if its spawned by the PC bUseNetOwnerRelevancy seems like a better choice
trim elm
I did call set owner server side. But GetNetOwner() is overridden by APawn to return itself, not it's actual owner.
But yeah, maybe bUseNetOwnerRelevancy might be better. Will look into it.
winged badger
why would you do that?
trim elm
I didn't. It's that way in the engine.
winged badger
engine looks for TopOwner
trim elm
const AActor* APawn::GetNetOwner() const
{
return this;
}
But thanks @winged badger I'll definitely check out bNetUseOwnerRelevancy.
winged badger
i'd call that yet another game framework fail
trim elm
Heh
winged badger
/** Return the actor responsible for replication, if any. Typically the player controller */
virtual const AActor* GetNetOwner() const;
/**
* Does this actor have an owner responsible for replication? (APlayerController typically)
*
* @return true if this actor can call RPCs or false if no such owner chain exists
*/
virtual bool HasNetOwner() const;
bool AActor::HasNetOwner() const
{
if (Owner == nullptr)
{
// all basic AActors are unable to call RPCs without special AActors as their owners (ie APlayerController)
return false;
}
// Find the topmost actor in this owner chain
AActor* TopOwner = nullptr;
for (TopOwner = Owner; TopOwner->Owner; TopOwner = TopOwner->Owner)
{
}
return TopOwner->HasNetOwner();
}```
quaint coyote
Im having some problems trying to get a 3D widget to work in a multiplayer sense. Im just trying to have a box collision that gets all the players within it and then create a 3D list that shows the name of all the players to everyone. the problem im having is that widgets mainly work clientside and I dont know how to bypass that. im mainly working with blueprints
winged badger
the usual way to go about that is to add a WidgetComponent on the players
or a WidgetComponent on their PlayerStates, and attach PlayerStates to pawns
and have those display the name in the PS
pseudo iris
how do I make a match end and start another one?
i've been trying to find help on google to no avail
dawn nova
What's the issue you're having with doing that?
quaint coyote
@winged badger im confused as to what the widget component attached to the playerstate would do. I have the player names stored in the Player state but the 3D widget would be its own object on the map is what im trying to get. ive tried having it so the server is the one that gets the player names, stores them in an array and then mulitcasts the array to the clients to be able to create the list on the 3D widget and be able to see the text. when ive been trying it some names from the array appear but then others just appear as "none"
winged badger
never replicate whats already replicated
you have an array with replicated playerstates in gamestate->playerarray on all clients already
quaint coyote
ah ok so if I can link the 3D widget to the gamestate and get the playerarray from there it should show all the player names to all clients
pseudo iris
sorry
@dawn nova I just dont know what to do
Like, what kind of custom event do I create to tell to start a new round?
rancid barn
Seeing if anyone has experience with this type of problem: I have a project that involves cards, so say I have an ACard class and then child classes like ABonusCard and APenaltyCard with their own sets of functionality.
What would be a clean cheat-proof way, with a dedicated server, to have cards display "face down" for some clients, and "face up" for others? I originally had everything all crammed insided ACard, which made it easy to selectively replicate various attributes to different clients. Now that I'm splitting it up into children, however, that method no longer works, because if I spawn an APenaltyCard it's impossible to hide the fact that it's a penalty card from the client as it can just look at the class
I'm thinking of spawning generic ACards on clients, and having the actual card type exist only on the server
icy latch
Maybe do a uint8 variable as a card value 0 == face down and only modify it via RPC to the individual clients instead of replicating it that way you can control the value each client receives.
If the card isn't 0 you can do a switch and cast it to another type.
enum or whatever
rancid barn
Oh that's interesting. Have it be un-casted on the client, and don't tell the client what to cast it to until you want to reveal it
is that a thing you can do?
icy latch
ya
you can change the texture or w/e when it receives the non-facedown value. and perform logic that casts it to the specific type base on the enum/uint8 value.
rancid barn
I've never come across this concept before, am I understanding that I can spawn for example an ACard into the game, and then turn that instance directly into AChildCard without making a new instance or breaking its references?
icy latch
I'm not sure about changing the stored reference it would still be ACard* but when you
ACard->SomeAction() {
switch(CardValue) {
case 1:
Cast<APenaltyCard>(this)->whatever();
break;
default:
break;
}
}
I'll play around with this. Thanks for your insight!
icy latch
np
rancid barn
on that topic, is there a way to cast to a type defined at runtime for example pseudocode
classtocastto = AMyActor1
classtocastto* castedactor = Cast<classtocastto (actor)```TSubclassOf<ACard> classtocastto;
rancid barn
I've only ever used that to give a blueprint property
can you actually assign that to something programatically?
icy latch
ya, let me find an example
AEnemyPaperCharacter* NewActor = Cast<AEnemyPaperCharacter>(GetWorld()->SpawnActor(EnemySpawn.EnemyClass, &SpawnLocation));
icy latch
np
shut ruin
Hello. Help me please. I use the playfab server, I connect STEAM throws it from the server. Api error. Support said that you need to use ExternalMatchmakerEndpoint, show an example please in BluePrint how to do it correctly.
😦
cedar finch
Should aiming down sights be handled locally then just replicate the animation to everyone else later? Or should I force it to go through the server first before allowing?
rancid barn
The ADS animation itself has no effect on gamestate, so it should be able to be done locally
then if the server winds up rejecting the client's attempt to ADS, you can kick them out of it
it would feel pretty bad to wait 30-100ms for your ADS client-side
cerulean escarp
hey guys, I have an issue where my players gun does not update the position of the bullet spawn on the server. the bullet spawn is a component of the gun which is spawned as an actor and attached to the player. I've had this issue before and I think it has something to do with dedicated servers not replicating skeletal meshes properly, but I couldn't find anything on google and I can't remember. any ideas?
also I'm doing this in blueprints
twin juniper
spawn bullet as actor from server side
twin juniper
ure replicating transform?
cerulean escarp
yep
twin juniper
it doesnt move or disapear?
cerulean escarp
what doesn't move or disappear?
twin juniper
the bullet
cerulean escarp
it shoots perfectly fine, but only directly out from the player
the pitch never changes though
twin juniper
maybe ur attached component to the character isnt being replicated
so at client it looks fine
but at server it doesnt exist
cedar finch
Ok cool. Thanks @rancid barn
cerulean escarp
is a cameras rotation able to be replicated so that when it rotates the children move/rotate with it on a server?
compact ocean
Hello, I'm looking for help because I didn't find a way to create a multiplayer game without the host/join thing but with a server hosting for everyone.
Can someone explain me or send me a link to a explanation ?
Thanks 😄
bitter oriole
Define "everyone"
It's up to 100 in UE4, with immense care
Most indie games need a lot less than that
compact ocean
?
bitter oriole
Well, what did you mean by everyone ?
compact ocean
I meant the server is hosting the game
not a player that can leave
Basic client/server but I have no idea how to do that
all the tuto that i've seen were about hosting/joining
bitter oriole
Yeah - so what I'm telling you is that you can do that, but you need multiple servers, not one
onyx crest
you're talking about an authorative or dedicated server
onyx crest
and from my experience you can handle over 100 users on a unreal hosted server. and they're the same basically authorative just means that the server decides movement
but using those search terms you'll be able to probably find better results for what you're looking for
onyx crest
they're one and the same
compact ocean
ok
onyx crest
https://wiki.unrealengine.com/Dedicated_Server_Guide_(Windows_%26_Linux) dunno how dated this guide is
compact ocean
Yes i followed this guide but i don't understood how this is working
I mean what is the server part and what is the client part and how do they interract
and how can I code the interraction between two users for example
I did this tutorial and ended up with .exe files but I had no idea how this was interracting
onyx crest
sadly outside of my range of skill so far, i'm using a premade mmo kit 😅
bitter oriole
Well I guess there is ShooterGame in the samples
rancid barn
Mr Moine you're referring to Dedicated Server vs Listen Server. A listen server is where the server is also a client, which would be a host/join system. A dedicated server in separate, usually owned by you. You can run your game as a dedicated server at any time by clicking the little dropdown next to play and ticking "Run Dedicated Server".
For the most part, the concepts are the same whether you are coding for a listen server or dedicated server. Any regular guide that covers coding for listen servers will be good for learning to code a dedicated server, too. You use all the same replication, RPCs, etc. just keeping in mind that your server is not a client.
when you package the game, Unreal will generate both your client.exe and server.exe if you tell it you are using dedicated
pseudo iris
could someone help with my deathmatch game mode please?
half jewel
are on_rep properties eventually reliable, like reliable rpcs ?
cerulean escarp
is there a way to make camera rotation replicated? I have a skeletal mesh (FPS arms) that is the child of my camera, and I'm having an issue where when I shoot my gun the bullet only shoots directly forward wherever the actor is facing. it won't change elevation even if I move the camera up. any ideas?
steady briar
can anyone help me understand Role? ive read a bunch about it but... still really confused. trying to use an easy example, what is the pawn i control, what is the pawn another player controls, what is an ai pawn? also theres Local and Remote and it hurts my brain a bit...
viscid escarp
@steady briar pawn is like the character that you control. Player controller is the representation of the player inside the game. So, basically, like a chess match, the Player Controller is the player, and the pawn is any individual piece(king, queen, pawn, knight,bishop,rook). Don't know what do you mean about Local and Remote
steady briar
like GetLocalRole, GetRemoteRole. ROLE_AutonomousProxy, ROLE_SimulatedProxy, ROLE_Authority and whatnot
meager spade
An actor owned by a locally controller player, will be Autonomous Proxy, An Actor owned by the server will be Authority, an actor not locally controlled on other clients will be SimulatedProxy. A listenserver is both autonomous and authority. Local Role is the role this actor is to the local client.
some caveats, this is specifically to replicated actors
a client locally spawned actor will be authority to that client.
steady briar
@meager spade so, my pawn = Autonomous, other peoples pawn / ai Local (to me) is SimulatedProxy?
meager spade
so say dedicated server, the pawn you control is Autonomous
other clients Simulated
server Authority
steady briar
im trying to replicate somethings movement... autonomous seems to work but the simulated is screwing with me. i must be way off about something
and when would Remote role be useful?
cerulean escarp
@meager spade could you help me with my shooting issue? I've got a skele mesh that is the child of my player camera and it holds the weapon which contains the bullet spawn. the bullet spawn only follows the actor rotation for some reason, and completely ignores the camera rotation. this is all on a dedicated server
winged badger
wait, you put the skeletal mesh under a camera in component hierarchy?
worthy perch
Some people do that for first person arms.
winged badger
GetPlayerVIewPoint is replicated under the hood, on the PC
meager spade
dedicated server doesnt play animations
that is probably the reason
weapon could be in the wrong place shrug
pseudo iris
how do I make multiple rounds happen in a single session like in counter strike, where things reset?
does anyone know of a good resource for making multiplayer games in UE?
livid holly
the best resource I've found was the Udemy course, making multiplayer games with ue4 c++
not free though
pseudo iris
bought it
it's super cheap
the tutorial says it would really help to download Visual Assist
its a hundred dollars
it doesn't even have what i'm looking for particularly, might refund it
steady briar
u need to stick with things...
if u found something that did everything u wanted, then why bother doing it
its about learning concepts, not just the exact thing u want
multiplayer adds many layers of complication on top of things too
pseudo iris
if it involves a one hundred dollar plugin to follow along though
don't be condescending to me
steady briar
ive never used it. i think it might be handy but i dont think its required for anything. u can code in notepad
meager spade
its just an ehancement, not required.
pseudo iris
does anyone here know what to do when you want to start a new multiplayer match?
steady briar
thats so vague really
meager spade
call restart on GameMode?
gray scroll
is there a way to detect weapons on the floor?
cerulean escarp
overlap
pseudo iris
where do you set the state of the match, in the game mode or in the state?
cerulean escarp
@meager spade sorry for the late response, I checked the whole dedicated server running without anims and I had already fixed that with the optimization options under the skeletal mesh
I also found out that no matter what component I put hierarchally under the camera, it won't rotate with the camera
plush mist
Hi ! I am trying to travel server to a new map via GetWorld()->ServerTravel(MapName, true); but I can't . And I have a next log.
[2020.01.20-00.29.04:477][616]LogWorld: SeamlessTravel to: /Game/Maps/BlankMap
[2020.01.20-00.29.04:477][616]LogStreaming: Error: Couldn't find file for package /Game/Maps/Temp requested by async loading code. NameToLoad: /Game/Maps/Temp
[2020.01.20-00.29.04:477][616]LogStreaming: Error: This will hitch streaming because it ends up searching the disk instead of finding the file in the pak file.
[2020.01.20-00.29.04:477][616]LogStreaming: Error: Found 0 dependent packages...
Why its trying to find Temp Map ? If I ask to load BlankMap?
Simple Local MP Seamless travel...
hoary lark
I don't know much about it but from what little I do know (and until someone more knowledgeable comes along) seamless travel, by design, travels to a temporary map first. maybe you don't have that set or something. have you read the documentation on this?
plush mist
@hoary lark transition map if not specified will be empty. [UE DOC][Enabling Seamless Travel
To enable seamless travel, you need to setup a transition map. This is configured through the UGameMapsSettings::TransitionMap property. By default this property is empty, and if your game leaves this property empty, an empty map will be created for the transition map.]
my other projects work just fine without transition maps
hoary lark
well if I look this dumb I might as well try to go dumber. there is a setting under Project Settings > Packaging > (advanced dropdown) > List of maps to include in a packaged build ... is it necessary to add all of your maps to that?
cerulean escarp
figured out my issue for those who might need a solution to the same problem:
cameras are not replicated at all so if you have anything that is the child of a camera and needs to rotate, slap a spring arm as the parent of the camera and have the spring arm do the rotation
plush mist
@hoary lark thank you. It was silly me! I set transition map to None by editor but DefaultEngine.ini for some reasons not updated. When I edit it manualy all works just fine
hoary lark
