At a stab, I'd say something to do with hashes.
#multiplayer
severe widget
granite jolt
ok as a follow up question, which is considered the most performant system to use in multiplayer as an alternative to using TMaps? Array + Struct?
thin stratus
Technically yes
rare cloud
you can also use TMap and make some function to update it on client
granite jolt
I thought about manual replication but wasn't entirely sure it would fit the system
charred crane
so...weird issue. I have a component that I'm having a server RPC set to visible...but it's not being set visible for the server itself. ideas?
When the server executes the non-rpc function it replicates fine to clients.
sterile pebble
that sounds strange
charred crane
and when the client calls the RPC the server sets it visible for the client, but not for itself...but its multicast.
sterile pebble
did you check that component marked with replication checkbox? And the owner actor? Also, do you handle rpc as reliable or not?
worthy wasp
Not sure how to fix this - i'm attaching an actor to another actor (motorbike) and on the client it looks completely different than it does to networked clients... the location & rotation is CMPLETELY off with eachother.... How can i sync these? I'm looking all over - cant find squat on the issue. i've debugged printed the Transform - both server AND client match transforms for both the actor (attached) transform as well the motorbikes socket (the attachment point) transform.... yet the attached actor is CLEARLY different from local to networked clients.
GetOwner()->AttachToComponent(HoverBikeRef->BikeMesh, FRules, "BikeSeat");
AsCharacter->ForceNetUpdate();
the above code is run AS SERVER
thin stratus
AttachToComponent is not replicated afaik
Means you might need to call it on everyone
Also make sure if your sockets are animated it might be that the skeleton doesn't update on the server if the client is not visible
If that's the case then there should be a boolean for that
worthy wasp
the client is visible though to the networked clients
i can clearly see it from a networked player - but the locations/rotations of the attached actor differe from local to networked
@thin stratus when you say there should be a boolean for that - what do you mean?
thin stratus
Did you try to attach it in a multicast /onrep
worthy wasp
no i was attachign on server
thin stratus
There is a boolean on the skeletalmesh i think
worthy wasp
i can switch it to a a replicated bool & do OnRep
thin stratus
That is for ticking the bones even when they are not rendered
Or something like that
thin stratus
Try the attach first
worthy wasp
ok sure - FWIW - i also tried setting the whoel component to bReplicates True/False - neithe rmake difference
timid pendant
Hi can someone help me with a json error. I posted it at this link https://forums.unrealengine.com/showthread.php?7045-JSON-Query&p=748330&viewfull=1#post748330
brittle sinew
I'm pretty sure you're using the wrong node
Well, actually I'm not really sure
Initially, I would think "get object array field" sounds like you're getting something in an array
But it's returning an array
I would look at the plugin source and make sure the function is doing what you want it to
timid pendant
Yeah its supposed to return an entire array from the array name
I tried every get array node from varest also
pallid mesa
exi, i saw you said that checking authority on a server rpc event makes sense, like, is it a joke or i am lost on something? xD
brittle sinew
@timid pendant could you put your full JSON response on something like pastebin?
It looks to me like your brackets are messed up, to be honest.
timid pendant
Yeah sure
brittle sinew
The log says the JSON data is invalid
Actually I might just be dumb
Hehe
But still, the log says it's invalid, and that's an engine log, not a plugin log
worthy wasp
@timid pendant i'm using VAREST currently - had a world of troubles with JSON Object Arrays- i dont clearly see your post from that link above - what erors are you having? you say you cant get an array from VAREST?
timid pendant
Yeah and same for the json query
Its a valid json data
@worthy wasp I will make a blueprint with varest quick and show you the error
worthy wasp
likewise i have my project open with my working json events - so hit me up when ur ready
timid pendant
Alright
worthy wasp
@thin stratus - i did a NetMulticast RPC - debug strinnged to make sure it was running across all clients (it is) and this is still the outcome with the attachment:
i'm going to set a boolean and move the functionality of the attachment to the OnRep of the boolean like you suggested.
there is however something i'm noticing
the instant that i attach myself to this bike (i'm obviously changin ownership from the CharacterPawn to the BikePawn)....
my AnimBlueprint is erroring out here:
RiderComponent is no longer valid
this was in the original character pawn class
twin juniper
@thin stratus so for some reason, im using a client rpc
yet its being called on the server
??
HAX
ALso
jolly siren
not hax
client rpc from server runs on server
if it's a server owned/unowned actor
oak sluice
Hi, I can't seem to find a way to disconnect my client from a dedicated server, I didn't create a session.
Tried combinations of destroying the Player controller from client / server, open level, destroy session, nothing works..
Any leads will be very welcome ๐
Hmm .. guess I only had to specify absolute path to open level ..
worthy wasp
@oak sluice - forgive me .... you are joining this map right? in my project (Dedicated server in the cloud) i have the following - which loads the player into the world - however you funciton it....
http://puu.sh/x6U93/af28d1fd20.jpg
the IP address is of course - where you would interject wherever your server lies
oak sluice
@worthy wasp I got it to work, just had to tick the absolute checkbox on open level
thanks!
worthy wasp
are you using an IP in OpenLevel ?
opaque tinsel
hey guys im currently replicating ledge climbing, my client player cant move to the left or right when ledge climbing
worthy wasp
@opaque tinsel - can you go into detail about your movement code?
opaque tinsel
So if players are hanging, they are able to move left or right
and it works properly on the server, but on the client, when the player tries moving left or right, they would stay in place and the camera would just move left and right really quickly
opaque tinsel
no this isnt
worthy wasp
hmmm
how are you calling the CLIENTS input to do this wall climbing?
also i just noticed
your SERVER rpc's are indeed MULTICAST
which wont run unless theyre called FROM SERVER
so are you calling these 2 movement functions from server?
opaque tinsel
worthy wasp
problem i see is you're doing all this work on net multicast
i'm no networking perfectionist - but you should at least change the multicasts to server - for the movement functionality
after your movement functionality is done - you'll have to pass args into a multicast rpc - to set location/rotation for everyone else to view.
by doing this s- your clients should be able to execute this -
brittle sinew
Just a heads up @oak sluice, the code that threw that warning we were talking about just vanished
It was introduced in 4.16.2, and it's gone in 4.17.0 ๐ฎ
X-files tune plays quietly in the background
I imagine it stirred up something that wasn't intended, possibly relating to your issue ๐
(to be fair, it did say it was a temp fix)
sweet spire
Lethal question for you
When im adding controller pitch or yaw, im using the player mouse POS, but the server does not know about the player mouse POS, so its causing jitter as they are fighting each other, any ideas?
loud sage
Playing around with some netcode, but why does a world context that can get me the gamemode not get me the gamestate? (it gives me a debugbreak/error)
A gamestate should be on the server & clients and a gamemode on the server, so how come my server isn't able to access the gamestate? ๐ค
thin stratus
Maybe too early?
sweet spire
send help cedric
brittle sinew
@loud sage yeah, it's most likely a timing issue...GameState and PlayerStates aren't available immediately
loud sage
Ah, that makes sense ๐
pallid mesa
@brittle sinew which warning, this one? https://forums.unrealengine.com/showthread.php?149590-Relevant-warning-on-ShooterGame
ah no, still der :v
LogNet: Warning: UIpNetDriver::ProcesRemoteFunction: No owning connection for actor WeapGun_C_1. Function ServerStopFire will not be processed.
worthy wasp
@loud sage - the way i do it in blueprints (Picked up from Mike Allar's Generic Shooter pack) is to cast to the gamestate/playerstate & on Fail - delay .2 and cast again. this way - it repetitively does it till the gamestate becomes available. In THEORY - there's no need to worry about a infinite loop - because the gamestate or playerstate does come up within a few frames.
if you're worried about it i- you could always do a for loop (10 iterations or so) but then when 10 hits - y our chance of hitting the gamestate/playerstate are gone....
loud sage
Smart, I could do taht in c++ too (I think)
worthy wasp
aye - while(!Cast<AGameState>(this)) perhaps? I dont know if that would work - i've nto done this in C++ yet
'this' would have to be replaced with whatever code gets gamestate....
UGamePlayStatics:: or whatever the method is to get gamestate
i think you said: GetWorld()->GetGameState()
twin vault
I wonder if its possible to create a single player / listen game with a inventory system which cant be cheated
meaning players cant get items in singleplayer then go play in multiplayer
but i dont want them to cheat and have everything
thin stratus
Then you need to store their items away from them
In a database that you host on your own servers
Or for example using a service like GameSparks
twin vault
but then i wonder if the client itself tells when he got a new item, i guess it would be easy for a cheat to make the same thing
inner iris
Quick question regarding updating values on client / server: I'm shooting an auto weapon which fires locally and then runs on server after to reduce perceived input lag. However the server updates the ammo count, so since the client is say 100 ms ahead of the server, it might fire off a few extra rounds before the server stops the fire due to no bullets left in the clip. The solution here would be to decrease the ammo count on the client in the same way the server is doing it, but wouldn't this result in the client's clip being decremented twice? Is there a way around making a new variable that is the local client's clip size and decreasing/checking that separately?
twin vault
i have no idea how cheats are made so idk :d
inner iris
@twin vault The server would check if the client has that item on the serverside inventory, and if not, it's disallowed.
The actual receiving new item would be done on server to prevent just that cheat
twin vault
yeah if i would use dedicated servers i guess that would be easy, but i was thinking about singleplayer to not force having to be always connected to the server
think diablo, you can get itens in singleplayer then go to multiplayer (although diablo can be easily cheated)
inner iris
In that case I'm not sure, if nothing can verify if you got the item legitimately then it's pretty hard to prevent them getting it
thin stratus
@inner iris No it would not get decremented twice
Server would override the client
Removing input lag is always done by doing the same action BLIND on the Client
So you check on the Client "EnoughAmmo?" "Yes?" "Ammo-- and Shoot"
And do the same on the Server
But the Client is only allowed to do effect stuff
Like hit decals etc
And server actually processed damage
@twin vault If they host their own Servers, then it might be really tricky
That's why WoW etc have their Servers hosted away from the client
thin stratus
Games like Torchlight just don't care
twin vault
i might ass well let them cheat
twin vault
yeah]
thin stratus
I would even give them a cheat menu
twin vault
haha
thin stratus
The easier it is, the more likely they won't do it
maybe convert it into a way of getting their own weapons through steam shop
ยฏ_(ใ)_/ยฏ
Modders love that
inner iris
Thanks @thin stratus works great ๐
A bit of glitchiness on my UI as the server and client fight to set the value but I might just make the UI retrieve the client's version of the number on the bind
One last question- is it safe to set various child weapon blueprint variables in the construction script (recoil/spread/clip size etc.) or should I run an RPC after it has been spawned in the world setting those values?
thin stratus
You mean for different weapons?
thin stratus
Depends, I usually made a new Child for each weapon and filled in the base values
Like in the Class Defaults
inner iris
Yeah I'm setting those in the construction script
thin stratus
No need to use the script for that
inner iris
Just not sure if that's safe for cheaters etc
Oh there was a bug that reset all my child actor variables at random
That's why I'm doing it in the construction script
But it's fine to do it there and not have those values set and confirmed on the server when spawned?
thin stratus
Technically yes
Because the Server should always be the one that has the last word
Even if the client changes clip size etc
he won't do anything with it
And yeah, that bug exists for ages
inner iris
Cool thanks a lot for the help
versed bloom
Fast question, looking for gold
Multiplayer game for Steam. Using the demo App ID 480, giving loads of errors and log shows loads of mismatches of other devs using it.
DO I JUST CONNECT TO A HOST PC DIRECT BYPASS STEAM WHILE IN DEVELOPMENT AND WAIT TILL I SUBMIT TO STEAM FOR MY OWN APP ID? WHAT DID YOU DO? oops caps, sorry.
solar flower
@versed bloom When is it throwing errors for you? Have you not been able to get the Steam subsystem working?
sweet spire
How do u handle things like get hit result under mouse cursor for multiplayer
civic belfry
I just posted that if anyone wants to take a look. Basically, my large static meshes are jittering when moving around in the level
dedicated server
sweet spire
sounds like your movement is fighting each other
sweet spire
Anyone got any tips for sending mouse target data too a server with out RPC
timid pendant
Has anyone ever used the low entry json and http plugins and do you find it better than VArest ?
harsh turtle
So, I have GetWorld()->GetGameState()->PlayerArray, but I'm not sure how to figure out which controller/pawn is associated with each PlayerState
tropic moat
it looks like there is no getter for AController in PlayerState,
in APlayerState::PostInitializeComponents GetOwner is casted to AController, so that's one way to get it
@harsh turtle
harsh turtle
@tropic moat thanks much!
sweet spire
hmmm i think my rep notify var are not sending too anyone else but the owner D:
harsh turtle
@tropic moat ๐ฆ As a client connected to the server, GetOwner() returns null for all player states except the client's.
tropic moat
that's by design
on clients you have only local PlayerControllers
only server has all PlayerControllers
harsh turtle
Ah. I'm trying to show the health and name of other players on all clients. I'm currently storing the health in the pawn. Any suggestions on how I might recover the health from the pawns?
tropic moat
how are you showing it ? you should be able to get your health value directly from your pawn
sweet spire
Replicate Health
Get pawns too set references too where ever u want too store it, ie if they have floating health bars get them too set it there
harsh turtle
From my HUD class, I'm drawing it using the canvas. Looking to create a left 4 dead style UI: https://gist.github.com/dakitten2358/e0cfa7d2a1f9b6b6e5ef5fd53e3fbd34
tropic moat
you can store your health in the PlayerState or do what Halcyon is suggesting
sweet spire
let me throw u a fab example
harsh turtle
I was hoping I could avoid storing it in the playerstate.
tropic moat
you can also find all pawns with type ANativeCoopCharacter
sweet spire
tropic moat
and use them directly, you only use PlayerController to access your pawns,
sweet spire
Everything has its own floating health bars with this function
cast too your pawns own floating bars, and set its self as ref
then the floating bars can get the health value directly from the set ref
tldr each pawn Sets its own Floating hp bars reference too its self, by calling the built in function
onyx haven
How do I replicate things without having to create events all the time?
fossil spoke
Use variable replication?
thin stratus
@onyx haven As long as you are on the server, just set replicated variables. Otherwise you are forced to use RPCs
@twin juniper Well, does it need to run on tick?
Generally okay, but make sure it's not reliable
pallid mesa
here, sounds on ShooterGame are not something they take care of with that much love
at least for footsteps
they don't really have a system to play different footstep based on surface type
they just use generic sounds on notify inside the anim graph
thin stratus
Yeah but diff sounds on diff surface is quite eas
twin juniper
@summer nova @thin stratus https://www.youtube.com/watch?v=XcT_IO1aC2Y
this behavior is only present in shootergame
summer nova
what the fguck lol
thin stratus
You want to know how that works?
summer nova
it creates a bunch of points wich are basically the bounding box, then traces against them
if all of them fail, then it goes to shit and stops replicating
ill keep that one in mind, its a very interesting thing
to check if something should replicate or not depending on its view, or whatever you want, really
this is done in the server, and it has the isssue of teleporting the player if you are lagging. It also has the issue of doing a good amount of traces on net tick
as its a n squared thing
every player against all pawns
if you have 10 players, then its 100 checks, and each of the 100 checks does a bunch of traces
twin juniper
ouch
wintry cove
inner iris
Is that replication culling system implemented to optimise network load? Seems like it could potentially show things that would seem incorrect to the client unless the traces are super consistent and start replicating the actor whenever it is seen again.
thin stratus
I think that's more for wallhackprevention?
inner iris
Ah makes sense!
sweet spire
Just too double check, is this an effective way too change velocity
or would rep notify bool be better
lament kettle
Should I be creating the Inventory manager within a blueprint actor or should all of the code be within the player state?
I'm thinking of Inventory Actor and manipulating that within the player state.
sweet spire
depends how your gonna use it
anything u put in the player state gets sent too everyone
do other players really need to know about everything happening in someone elses inventory?
hasty adder
I guess if your using client authority system you'd want to make a solution for wall hacking
modern dome
How and where can I store ServerTravel per-client Data?
I mainly want to store which Player controlled which pawn before ServerTravel.
I am not using Seamless Travel though
Docs say Clients stay connected to the Server. What does that mean?
rare cloud
@Raildex#6923, the server didn't log out and reconnect the player
modern dome
@rare cloud What does that mean?
If they do not get logged out, does that mean I can reference the PlayerControllers across ServerTravel?
Nah, that doesn't make sense
rare cloud
it mean if you use ServerTravel and override function like CopyProperties from your PlayerState, data will be keep accross ServerTravel
because the player isn't log out
modern dome
Ah ok. That makes sense.
I guess I try to transfer who possessed who over the Options
rare cloud
you can't reference PlayerControllers because ServerTravel will change the map or reload it, well you create a new UWorld, well everything is delete from the old world
modern dome
yeah, that's why I thought it is useless to reference them
rare cloud
but there is some gate like CopyProperties where you pass old data to new object
no, because server travel can log out player and reconnect it during the process
but it isn't the case
modern dome
I am currently thinking about using the OptionsString to transfer this kind of Information.
For example:
?MemberA=UNIQUE_NET_ID_OF_PLAYER_1?MemberB=AI?MemberC=UNIQUE_NET_ID_OF_PLAYER_2
rare cloud
OptionsString is used for Log in
rare cloud
well yeah you can pass informations, but you can also use a Payload on your GameInstance
I guess it will be easier
onyx haven
@thin stratus How would I set replicated variables to replicate a spawn emitter?
thin stratus
Depends on what would cause it
This is also about: Does the emitter need to exist only for people who were there when it got created, or does it need to be created for people who come in late?
thin stratus
Well you have two ways:
First, you need to be on the Server for both ways, so if you aren't yet, get there somehow (ServerRPC).
Then:
If the Actor itself is replicated, perform a simple Multicast.
Set it to reliable if it's important (effects are not really important!).
If the Actor itself is not replicated, you need a dummy Actor that is replicated that has your Emitter in it.
Simply spawn the Actor from your ServerSide and the replication will kick in and do the rest.
OR
If the Actor itself replicates, use an "OnRep" variable that suits your needs (e.g. a Boolean).
In the OnRep function, enable or disable the Emitter based on the Boolean value.
@onyx haven
onyx haven
oh got it, thanks
just another thing, do you know how to replicate the blendspace?
guess only works with variable replication
thin stratus
Replicate the variables that drive the blendspace
(not inside the AnimBP, as that thing is not replicated)
onyx haven
only set them to replicated?
onyx haven
@thin stratus
vital steeple
anyone noticed any funkiness when you scale a replicated actor mesh over a server RPC?
it seems to skip really bad, only showing a few moments of the scale (which is run on a 2 second timeline)
modern dome
So, I tried to use the PlayerId within the PlayerState to distinguish between Players between ServerTravel
Unfortunately, the PlayerId changes after a Travel.
Sooo.... Any other suggestions?
LogTemp: Warning: My PlayerId Now = 320
LogTemp: Warning: Option Value and current Player Id are Equal (Ignore Case) : False```๐ฆ
thin stratus
Using a Subsystem? @Raildex#6923
Otherwise you could use the OnCopyProperties thingy
Or overrideproperties
can't remember anymore
You could use that to save your own unique ID
hasty adder
ahh add force... dedicated server acts so different
even with a Ticket -> Delta Time * desired force --->add force it is super fast on a dedicated server
woops .. .never leave a dedicated server running when you hit play in editor haha
vital steeple
@sweet spire lerping them on a multicast works except it doesnt execute on the server
modern dome
@thin stratus I am currently using OSSNull.
someone suggested to use the UniqueId within the PlayerState
https://forums.unrealengine.com/showthread.php?152339-Identifying-Players-After-Non-Seamless-Travel&p=749533&viewfull=1#post749533
thin stratus
@modern dome Na, that one doesn't stay if you change map. At least not in non seamless travel
modern dome
which one now? PlayerId or FUniqueIforgottheType ?
@thin stratus
There are two IDs
thin stratus
Hm PlayerID was the one you used before. I don't know if uniqueID is even set properly without a subsystem
modern dome
Is Null not a proper Subsystem?
thin stratus
No, it's a placeholder. It only allows you to see sessions in lan and connect via ip
You can try and print the uniqueID
Interested in what that is without a subsystem
Might be that it also gets set anew after travel
Since non seamless travel let the clients reconnect
modern dome
I'll try this when I am at home
Are there any other SubSystems except for Steam I can use?
thin stratus
Everything that has user accounts
GameSparks for example
They allow login via device, actual login data, steam and consoles
But technically you could just save a unique ID on the server and client and let the client pass that to the server on connect
So the server can compare
You could save the playerid from the initial join
sweet spire
@thin stratus question for you network wizard, just curious for things like session key on login authentication, how would u handle making them expire in a database? can u do that via like sql or does it need to be handled via client
modern dome
@thin stratus Whew. UniqueId seems to be the Client's Computer Network Name + some Value and it works for Local Multiplayer It seems.
Thanks. I can now assign the Pawns to the controllers thanks to that
?PartyMember0=DESKTOP-H1CEPAI-EBE502744116D5D8A9C9B19105C3B3C0?PartyMember1=DESKTOP-H1CEPAI-B9E6187343086C4EF26B7B90A1CE449A?PartyMember2=AI
my current String ๐
twin juniper
is somebody using google cloud compute engine to host a server? i got my dedi running already, but it is not answering to open ip, nor is it listed in steams server list. any hints?
https://gyazo.com/e8a1288a36d3badcedf228ae9f971c87 these are the ports i forwarded (incoming traffic)
ruby epoch
How to create spectator mode with blueprints?
I use Set View With Blend
but thats looks really bad
any ideas?
vital steeple
@ruby epoch i just had the player posses a spectator pawn and created a hud that spawns on begin play. is that what you mean?
ruby epoch
I want to when player is dead, he able to spectate his teammates
I used set view with blend
but its looks awful
so, how can I spectate from POV of other characters
@vital steeple
vital steeple
well im not sure if theres a best practice, but what i would do is create a spectator pawn, have the dead player posses it, then somehow bind the location of the spectator pawn to a teammate
ruby epoch
problem is I have 2 meshes for each player, hand and body
vital steeple
you would probably need an array of each team, i suppose you could use a custom player state with a team variable and for loop through the player list (in the gamestate) and if the player == same team then attach to player. then on mouse left click, go through loop again and skip current player or something
vital steeple
- spawn spectator
- posses
- destroy old actor
- attach spectator to player on team
thats a good place to start IMO
vital steeple
oh ok
ruby epoch
its possible to spawn pawn in blueprints?
vital steeple
are you checking in the world outliner to make sure its not spawning?
vital steeple
sup?
vital steeple
im using a possesed character to spawn an actor through a server RPC and set owner as that possessed character. that actor has a component that runs a server RPC on creation. output log says its not able to run the RPC because it has no owning connection on that spawned actor.
does the component not know that its parent is owned by another actor, so it doesnt know how to run it through that connection? IIRC components know if their owner has a connection by simply going up the heriarchy of the containing actor... maybe it doesnt know to keep going past its root and find the owner of it's owner?
vital steeple
basically i need to change a replicated value but i cant seem to set an owning connection for this actor
sudden stream
Hi there, anyone know if it's possible to disable the default PlayerController behaviour whereby the possessed pawn is auto-destroyed upon client disconnect from the server? (via Blueprint only)
brittle sinew
In BP only? Doesn't look like it
sudden stream
Yeah, that's the impression I'm getting from Forums/AnswerHUB
grizzled summit
Hello together ๐
I want to build a matchmaking function for my game, as known from MOBA games. (Join a queue and wait till enough players joined -> then the game starts / map changes from the main menu to the actual game)
And I'm not sure if using the session system is the right way.
What do you think? What would be the best solution to build something as above described?
twin juniper
buy uworks
vital steeple
nevermind. i found a work around by running stuff on the player for a few functions instead of the actor. its messier, but at least it always has a connection ๐
grizzled summit
@twin juniper you don't think there is a solution without using steam?
twin juniper
wait u dont want to use steam? do you want to use a dedicated server?
grizzled summit
yes I want to use a dedicated server
twin juniper
sorry man i gotta go for an hour, sry
grizzled summit
no prob, thanks anyway ๐ ๐
twin juniper
so with uworks you could somehow accomplish it over steam. there also is gamesparks, another 3rd party that would solve those things for u (free up to 100k users for indies afaik). building from scratch.. there are online beacons that can help with that, but i have no experience using those yet. im dont know, but i want to believe unreal tournament (source) might have something similar implemented already.
i know im not of great help, all i can help with is uworks, srry @grizzled summit
i can lead you to a github source that is allowing the usage of beacons in blueprints
would have to dig deep in the archives though, just tell me
grizzled summit
I meanwhile was reading my self through many forums. As It looks (even using Gamesparks) I have to build a server software that is able to start a dedicated server as soon as for example 20 players queued for a match. And then those 20 players have to connect to the dedicated server the server software "assigned" to them. Pretty tough job I guess but it sounds like a solution ๐ even though you didn't help that much, you helped me more than you think ๐ thanks a lot for your answers ๐
grizzled summit
ah great that looks realy nice
thanks a lot!
twin juniper
if you have any success, pls share!
grizzled summit
yes, I found this post about paragons server system: https://forums.unrealengine.com/showthread.php?112363-Few-questions-about-Paragon-lobby-and-game&p=549816&viewfull=1#post549816
As soon as I have success I will post it to the forum ๐
twin juniper
that doesnt look too complicated, even though i never heard of UParty lol
but you know.. the big issue with matchmaking for me is that the server costs could explode and kill everything
grizzled summit
your right, this is a real issue =/
twin juniper
i have no idea how games that offer matchmaking solve it.. propably with dlcs, cosmetics or sth
and i really doubt the community would host a server for matchmaking, cause they could never play on it hehe
grizzled summit
I guess this is the solution. If you take a look at games like smite: they are F2P and just offer cosmetics. Currently they (HighRezStudios) are releasing two new games (also f2p). They won't do that if there isn't much money earned with those games
twin juniper
true
grizzled summit
so lets see what I will come up with ๐
twin juniper
maybe im misjudging the costs somehow. i had a dedicated running today and it was at 0% cpu usage. i dont know but could u have several instances on the same dedicated server?
grizzled summit
I currently have no idea
but afaik you have to start a dedicated server for each match instance
tomorrow I will start with this project, as soon as I'm done, we will know much more in detail ๐
twin juniper
i am running on a google cloud server right now and the estimated costs are like 50-80$ per month for 1 instance
grizzled summit
that would be pretty tough if there is no other way to do it
twin juniper
i was in love with the idea of matchmaking as well (at first). i ditched my project now, cause of all the issues i found
and doing something with dedicated servers people would host themselves.. also singleplayer could be something ๐
grizzled summit
thats true somehow
let's see If I change my mind in the end too ๐
I'm leaving now, thanks a lot for your help again ๐
twin juniper
always, cu!
wary crow
Hey all, any of you use the XMPP functionality built into UE4? I'm curious about Epic's decision to use libjingle instead of libstrophe under the hood, mostly because there doesn't seem to be any documentation on the former.
night jay
Anyone else dealing with spikes in bandwidth?
I honestly don't know what's causing them for me, those RPCs you see are in the default character movement component
jolly siren
what version?
could be related to this https://issues.unrealengine.com/issue/UE-45681
night jay
Maybe, I'm using 4.16
What's weird is this
Why the hell does the frag grenade need to replicate the playerstate
or the primary and secondary weapon
or the player's health
I don't understand
The grenade spawns with the player as its owner
Maybe that's what's causing it?
slim holly
not sure tho what grenades network relevancy needs to be ๐ค
night jay
All it does is just throw the grenade on server, replicated movement and when u throw it an even t is called that it's activated on server and once there's an event hit it will explode a few seconds afterwards
twin juniper
i learned that 416 movement component is bugged as hell. i had huge problems using it. i switched to a blank 417 movement component and it worked perfectly fine
if anyone ever has issues, update the character to a newer version.
slim holly
didn't they make generic threats about fixing the movement component sometime soon?
since it has been [a mess] for a long time now
twin juniper
i didnt find any information about the issue itself tbh
jolly siren
@twin juniper what issues?
twin juniper
that hte movement component is bugged
twin juniper
ah, sorry. i had client side lag that was totally unusual. even on lan clients they lagged in a pattern that didnt seem like your normal lag. dont know how to explain
brittle sinew
Do you mean the CharacterMovmentComponent?
If so, I doubt 4.17 had anything to do with it, as it hasn't been changed since June and those were pretty minor changes
Guessing it was another part of the engine or just your project
Well, I might take that back haha, there was a change that dealt with client-side smoothing, but I'd never had an issue like that in 4.16 before personally
inner iris
Oh have to check that out! Have had some frustrating subtle jitter regarding movement on 4.16, thought it was on my end- will try on 4.17 and see how it goes
timid pendant
Hello I have a dedicated server and when i launched it said the varest plugin is not found so I took the plugins folder and pasted it into the server directory and now it gives this error
Do I have to edit my server.target.cs and add the module there?
hasty adder
Does the editor load with the plugin ok?
You shouldn't need to copy things around just use the front end to build it all out my server target doesn't have anything for varest
But works
timid pendant
Yeah the editor does
When I built at first it said the varest plugin is missing. So i just added the plugins folder and it gave that error
timid pendant
I fixed it by doing the server build in visual studio. Before I used the package manager to build it inside the editor
twin juniper
hey
do events like Add Impulse need to be multicasted?
i dont know what the limitations are of the default Movement replication on char mov comp
because if it just needs to be called on the server
then iw ould like to know
slim holly
@twin juniper I'd say impulse replication does not compute very well
at least I never got it to work at over 100ms simulated latency
it's either painfully delayed on clients+ jerks the player, or server can't keep up with it and tries to correct it twice, making it rubber band
but my testing was done with Characters(and charmovement), it might work fine on regular actors
but duly note, it still has delay in it
twin juniper
hm
hasty adder
You just trying to do a thruster of sorts on a character?
slim holly
you would use AddForce for that one
obtuse zinc
im thinking of ways to handle a player dying, and deleting the actor and spawning a new one causes some annoyances with their weapon and having to respawn all of that stuff as well. Would it be bad practice for me to instead unpossess their actor, hide it, then move it to spawn and possess it again?
slim holly
I just bound a ForEach loop to destroy any equipment upon actor removal
I mean OnDestroyed event
you probably want player to have option to change starting loadout right?
I think it's the faster way, instead of updating owners and instigators to existing weapons to get damage output right
- reset any conditional variables like ammo
obtuse zinc
so as of right now i dont plan to allow them to change their weapon on respawn, they choose a weapon at the start of the round and theyre use it for the round
slim holly
right, so then I would suggest resetting the characters
I think epic uses those for respawning
then you would only have to switch between spectator pawn and game pawn
obtuse zinc
so you're saying dont kill the actor and spawn a new one every time, just reset them
slim holly
yea
twin juniper
@twin juniper By blank do you mean making a new Character class from scratch and porting over all logic or just converting project to 4.17?
Because I've seen the client lag during 4.16
And it's extremely irregular
Very annoying in VR...
i made one from scratch
we actually are testing that right now, i can tell u more in about 1hr
twin juniper
@twin juniper when we ported the project to 417 the problem remained and then i swapped the character to a new default 3rd person template char and it worked like a charm
im compiling and uploading, will take like 20min
Hmm that seems like alot of work for a random chance of improv...
I have many months of work that would have to be ported, and the baseclass has cast references everywhere
in our case it is not an improvement, but mandatory. the issues we have are ridiculous
let me paste u 2 videos
it seems like the higher your ping, the worse the issue
jolly siren
yeah I'm interested in seeing as well
twin juniper
btw if u only have a slight jittering it might be solved with r.vsync 1
i got very sensetive now ๐
*became
UE4 Has autism
Destroy() on ACharacter, then spawning a new Character and possessing it seems to keep the same movement mode as my old CharMoveComponent on the OLD actor
twin juniper
yeah it seems to work now using a new 3rd person char template instead of just updating to 417
twin juniper
that
is by far
the dumbest shit unreal has done
#autism
set one character to be flying, it sets all of them
WHY IS IT STATIC??
Engine modification #4 is now in session
hasty adder
Looks like the potential mechanics of a puzzle platformer game to me
twin juniper
no not that
the fact that unit8 savedmovementmode is static
static = shared
i think shared is a better name for static variables lol
becuase its shared among all instances of that class type
tropic moat
wow, i had to check it out myself
it is only used in PreNetReceive and PostNetReceive though
you can override both of those functions and get rid of that
tropic moat
only last line is relevant to you, other two were just me talking to myself
tropic moat
original code, but skip the part with SavedMovementMode, that would be my first step
to be honest that static variable is used to change one bool, bNetworkMovementModeChanged
it would be best to see how it is used, to find out why that static variable is even needed
tropic moat
that requires engine modification
tropic moat
then change that static variable to a member variable
brittle sinew
@twin juniper are you sure that variable actually has any effect on the movement mode used, however?
It doesn't change the movement mode within ACharacter, and UCharacterMovementComponent never pulls the value
tropic moat
it may trigger ApplyNetworkMovementMode for multiple characters
brittle sinew
I mean, I'm looking at the functions, and all it does is set two bools related to network updates on the CMC, but within the CMC there's not one mention of the variable
tropic moat
it's used in ACharacter::PreNetReceive and ACharacter::PostNetReceive
brittle sinew
Yeah, I understand, those are the functions I'm referencing
I'm saying I don't see how that has any effect on the actual movement mode of the CharacterMovementComponent
To me, it just looks like it's used for networking and seeing if the movement mode changed
I understand the fact that it's static looks like it would do something bad, but I just don't see where that would actually happen
tropic moat
i'm also not sure if this is really the cause of his problems but thanks to that variable, one character may trigger ApplyNetworkMovementMode for many
looks wrong to me
brittle sinew
Yeah, it does look a little off to me as well.
I just don't see it causing the problems they're describing
twin juniper
@brittle sinew it would explain
why after i destroy my character after death
why its still in swimming mode
twin juniper
Because its not destroying the mode
brittle sinew
Yes, but UCharacterMovmementComponent::MovementMode never gets set using this value.
twin juniper
MyActor->UnregisterAllComponents()
MyActor->DestroyActor()
Char = World->SpawnNewCharacter()
Ctrller->Possess(Char);
if i do that
it should NOT
keep the same movement mode
that i had
brittle sinew
Are you even reading what I'm writing
I understand that
I agree, it shouldn't do that
But this variable is never used in deciding the MovementMode to use.
tropic moat
what if new character get replicated data from old character ? and then that static bool triggers apply movement ?
brittle sinew
I'm not saying your issue isn't valid. I'm just saying this likely isn't the cause of it
tropic moat
just a speculation of course, remove that static variable, check if bug still exists and if yes, look again
tropic moat
i'm just guessing here
brittle sinew
@twin juniper I thought you said you were using Destroy over DestroyActor?
brittle sinew
AActor::Destroy calls UWorld::DestroyActor, but it also does more
twin juniper
im using destroy
hasty adder
Isn't it normal when a player is unpossess they maintain there last known movment.
Like usually you have to adjust it to how you want it or possess the pawn with an ai that will return to an idle stance
I mean games way back network disconnects usually resulted in the llayer running off into a wall if the pawn wasn't destroyed on the disconnect
twin juniper
Im going to try
just turning that variable to not be static
and see what happens.
brittle sinew
Personally, I would try to step through UCharacterMovementComponent::SetDefaultMovementMode and see if it's setting the movement mode to swimming there
twin juniper
// Static variables for networking.
//
static uint8 SavedMovementMode;```Lol
Just noticed the comments they had
Also
there should be no way now that i think of it
that that should be an issue
because its in ACharacter
and my character gets destroyed
twin juniper
@brittle sinew so i removed it
now it works
._.
Time to add this to my UE4 Autism Fixes Spreadsheet
brittle sinew
Fair enough, guess I'm eating my words :p
twin juniper
@tropic moat just case you wanted to know the results im pinging u
It makes no sense tho
like i understand ur point
brittle sinew
Might have to do with it not activating the movement update? Dunno
twin juniper
yea
LOL
thats why im keeping a spreadsheet
so i know exactly what ive changed
For example inside of InstanceBody the InstanceCount or something is uint16, Ive changed it to int32
because otherwise it wont go above int16
for each instance
and whenevr u doa trace it will return -1 on ones which are above the number
damn my typing is bad.
tropic moat
yay it worked
twin juniper
@brittle sinew btw to do Steam Authentication, you dont actually have to modify the engine code
The other day i found a way to do it without modifying OnlineAsyncServerSteam
heh another thing btw
evidently it seems like OverlapEnd() is called when Destroy() is called
thats really lame
vital steeple
anyone else get errors and issues when trying to replicate a player camera?
i started using controller rotation which sort of works, but has some weird glitches of its own
im also seeing this error as soon as i replicate the camera
void canopy
Hi Devs ! Any Idea what "UIpNetDriver:ProcessRemoteFunction: No owning connection"
I just googled
got it
civic belfry
ugggg is there some kind of trick to launching your player character in multiplayer? I'm trying to do a wall jump mechanic and it works great on single player. When I run with the dedicated server it starts to work then the server seems to correct itand puts the player back on the ground
Wall jump?
Tried Run on server, multicast, reliable/not reliable... never works!
better screenshot:
slim holly
yea launch is physics based movement, which is not covered by default character movement @civic belfry
civic belfry
ahhh good lord
civic belfry
lol that was my next question
thin stratus
I use an Impulse for a Dash in Protoball
civic belfry
now I'm wondering how jump works lol
thin stratus
But used directly velocity in my Rope Swing game
slim holly
lemme see what I used
thin stratus
Jump sets the velocity iirc
civic belfry
ahhhh ok
civic belfry
ok, sounds like a good direction to take for sure. Much appriciated!!!!
thin stratus
bool UCharacterMovementComponent::DoJump(bool bReplayingMoves)
{
if ( CharacterOwner && CharacterOwner->CanJump() )
{
// Don't jump if we can't move up/down.
if (!bConstrainToPlane || FMath::Abs(PlaneConstraintNormal.Z) != 1.f)
{
Velocity.Z = JumpZVelocity;
SetMovementMode(MOVE_Falling);
return true;
}
}
return false;
}
So they just set Velocity.Z
thin stratus
Yeah most games just jump in Z direction
I set the Velocity in my game to move me towards my grapling hook position
Mostly seems like modifying velocity directly is the best
civic belfry
ahh so would I need to make it multicast to update all of the clients that my character is jumping, or just the player and the server?
slim holly
I modified the default jump logic to support walljumping
which produces OnJumped event, which technically is multicast
slim holly
now I have an issue: Starting a match, I have custom sub-gamemode enum on gamestate which is used to select which UI to create for players when they join in. However...
it uses default value for host
I assume it's because of execution order, how to get around this without using delays?
thin stratus
I think so, yes
(server and client velocity)
But iirc, only owning client and server
But it was a jam game, Might have done things wrong while rushing the project
slim holly
I wish OnRep would trigger on Listen, would make this so much easier
civic belfry
perfect, I had most of the math already. adding my current velocity to the wall jump vector that I already had is working really well
haven't tested with 2+ players but this is looking good ๐
civic belfry
oh yeah I was reading about that 'test latency' thing earlier, definitely will do!
slim holly
net.pktLag= iirc
civic belfry
quickly realizing I've been taking multiplayer for granted in games LOL
I've been doing single player for a long time, never expected it to be this intense
slim holly
๐ค hmm, only inherited OnRep Functions can be turned into events
I wonder why that is
inner iris
Haha yeah as soon as latency gets involved it's another story to the default PIE multiplayer.
A lot of fun to try and get it feeling as good as possible even in unfavourable laggy situations
night jay
K so I have some issues with rubberbanding I'm trying to solve
My character can dash towards an enemy
I'm just doing a timeline which lerps character positions
then updates character location of the player dashing
First I just put the dash on the server but, that causes a delay and unresponsiveness for clients
So I tried making the client perform the dash locally too
But the local dash almost always goes further than it's supposed to which in turn the server corrects the client's position which causes rubber banding
So I need a way to sync rid that rubber banding while keeping responsiveness on the client
slim holly
you could add some extra distance to server side
otherwise you will have to make it static
static as in you need to know destination and traveltime, then adjust the travelspeed on server based on ping so that the character lands on the dash goal position at same timestamp
night jay
That's creates an unfair advantage because you will have lower travelspeed with higher ping
slim holly
technically yes and no
dash being avoidance skill, so it would be more effective with higher ping, it also has the start delay to balance it out
slim holly
hm
well, you could add small slowdown at the end of dash to give it time to sync
most games do that
to simply prevent fast traveling with skill spam
like, 0,2 sec should be fine
which should sync for 200ms of latency
beyond that, rubberbanding is players issue
imo
night jay
It's not really a player's issue when the game is causing it
Best solution I think would be you'd try to sync client and server during the dash
But I dunno how I'd go doing that
slim holly
yea but there is only so much time you can cover with network prediction
you can't fight time
hasty adder
lol... got my magnet effect working now i need to sort out the auto disable and such when its not in range haha
thin stratus
When did Epic turn SteamSubsystem into a plugin? (Version)
Is Allar's Blog Entry still working with 4.16?
Someone recently setup steam by that?
thin stratus
Hm, what exactly did change? Most of the install steps remained, or?
Like changing build.cs and inis
thin stratus
Awesome, thanks buddy!
night jay
np
past bear
I have a question about handling actors placed in the level - I can't seem to get it to replicate anything to a client and it's just on the server.
OnBeginPlay, I check if we're on the server, and if so run a quick algorithm, then call a reliable multicast function
said reliable multicast function never gets called on clients?
past bear
you wouldn't see anything in a screenshot - the setup is described above
essentially there's a reliable multicast function behind an 'IsServer' check, and I don't get why that function is only ever run on the server
(yes it replicates, and it is always relevant)
toxic flare
Odd, A multicast RPC should always call on the clients and serves when called from the server.
*server
who owns the actor
past bear
it's placed in the world
so I assume the server
as for which actor owns it, I have NFI
toxic flare
and your running a dedicated server? Or are you running a peer to peer game?
past bear
at the moment it's a listen server (testing in PIE)
removed the server / authority check and it still only ever gets called on the server
I just don't get it, can you not replicate actors placed in the level? Surely you must be able to
toxic flare
I'm pretty sure (98%) that if the actor is set to replicate it should not matter how its placed in the world as long as its either spawned on the server / placed in the world
past bear
removed almost everything:
https://snag.gy/LUt7z6.jpg
Log:
LogBlueprintUserMessages: [ObjectiveVolume] Server: !!! DO SPAWN OBJECTIVE !!! - X=135624.063 Y=539515.375 Z=6956.313
LogBlueprintUserMessages: [ObjectiveVolume] Server: !!! SPAWN OBJECTIVE CALLED !!! - X=135624.063 Y=539515.375 Z=6956.313
ARGH
I think the function is getting called before the clients connect
this explains everything
toxic flare
ah well , that would explain everything!
in that case maybe wait for player to join then call the function on the server
there should be events for players joining in the game mode
toxic flare
sometimes all you need to do is talk it out to yourself to come to the answer ๐
past bear
yeah, can do it onrep
but tbh, this stuff shouldn't be happening before everyone has connected
thin stratus
Usually you delay the start of the game
Via your GameMode
There are functions you can override to handle that
It would wait till your custom condition is met
and then call BeginPlay
afaik
@past bear
twin juniper
Hey uhm
Is it possible to move an OnRep function to be called in another class?
For example, say I have a ENUM in my GameState, but i want it to change something on clients locally
So I have ACharacter, and AGameState, gamestate has Enum repnotify and when it changes i want my onrep to be called from the Character class
not the game state
i dont think this functionality is currently possible but i would ove to hear what u guys know.
thin stratus
Why would you need that
Let the onrep function just get the character and call the function
twin juniper
Well for what im trying to do
im trying to do a weather syste, but i want the server to make a choice of what weather to spawn
thin stratus
Why does that need to be in the character at all?
tropic moat
i use events for cases like that, OnRep calls broadcast and everyone interested binds to that event
twin juniper
every character has a PArticle SYstem component
thin stratus
OnRep can be limited though
twin juniper
Yeah but how would u get "the" character?
o
wait
im an idiot
OnRep functions are client sided
so if i just called to get the local character
it would only return that character
ok yeah that makes sense
thin stratus
Yeah :P
eternal anchor
does anyone tried to run Unreal Server on Windows Nano ?
hasty adder
vital steeple
so no one has had problems replicating a camera component?
sweet spire
i dont think iv ever needed to replicate a camera comp
hasty adder
Aim offset? Woes @vital steeple
vital steeple
i just had trouble using the camera for a server side trace, it sees the position of the camera but not the rotation, so ive been using controller
but when i use controller, their appears to be a weird sway (like gun bob)
all the tutorials i lookup show using camera as both the origin and end (using forward vector) as their server RPC trace
but when i do that, like i said, it just doesnt get the forward vector, only the origin
so i guess im just curious if doing this totally wrong and the tutorials ive watched are outdated
hasty adder
Usually you set a rotation value that's replicated in the character from the controller rotation or camera rotation
And update it when the camera changes rotation such as if input on the movement != 0
There's usually no need to replicate it's rotation since tech the camera is a personal thing. The yaw is usually replicated by character movment
vital steeple
hrm
i suppose i could run a client side trace on the camera and then replicate the two points and have the server run its own trace
or do your way inphidel, because replicating the camera is overkill
just seemed like the way all the tutorials did it...
(not replicating but just running traces directly from the player camera with a server RPC)
anyway, thank you for the ideas, i'll figure it out ๐
hasty adder
Was the tutorial for multiplayer?
vital steeple
just multiple youtube tutorials i looked through. i dont think the official one covered trace rpcs
mostly just the menu, game creation, chat, and other stuff thats pretty universal
and i htink the fps multiplayer example is mostly in c++
what im working on now isnt quite as lightweight as a normal trace, since its on tick (its for a building placement "blueprint" that you hold to choose where you want to put your building)
so it has to update every frame and does cool stuff like rotate when you right click... anyway, i didnt want to spam the server with updates on it every tick. instead i just have it replicate the variable when you want to place the building so it only has to replicate the data once
looks liek the sway in the mesh is still there but whatever, its good enough for alpha ๐
whats weirdest is that the trace doesnt sway, just the mesh, and the trace determines the positon of the mesh...
wahtever, not important. thank you for your ideas ๐
hasty adder
It's small data going with the same packets as far as I know
vital steeple
i just figure anytime i can optimize network traffic, i should try
so if something seems unnecessary, i'll try to find a work around
solar flower
I'm calling a multicast RPC from the beginplay of my BP_Spawnpoint.
It's working on my server, but not on my clients (I assume because they're still connecting?). Is there anyway to check if all playercontrollers have finished loading the level after servertravel?
It works when i add a 2 second delay before the call.
vital steeple
i call stuff on beingplay from the playerstate
that seems to work
but yeah it definitely seems to take a moment to actually create the playerstate
sometimes its one or two seconds, sometimes as much as five or six
my chat system uses playerstate to store the text log, so i actually ahve the chat box spawn when the playerstate begins play
i dont know if theres a best practice, but i generally avoid using beginplay for things that seem to take a bit to spawn and instead i like to use custom events as a sort of begin play that triggers when i call it
@solar flower
solar flower
@vital steeple Thanks for the response, sorta figured that. Is there a way to wait for all players to have the level loaded before spawning anyone?
Also, since you mentioned playerstate, I'm aware of it but haven't seen a reason to use them yet. Is there any reason i need to? I'm storing everything in PlayerControllers, GameModes, and GameInstances currently.
IIRC, clients can see playerstates from other connections and are replicated.
fossil spoke
@solar flower @vital steeple There is nothing wrong with using BeginPlay. You just have to keep in mind that in an Multiplayer environment it takes time for information to propagate due to connection speed etc etc. You never assume that something is going to be instantaneous unless you have good reason or understand otherwise.
@vital steeple As for your chat box, i would Spawn it when an Players PlayerController is created and use Events to propagate chat messages from the Client to Server and then Server to Clients. Storing an Log locally is fine but you shouldnt replicate that log and use it as an means to recieve new messages as you could possibly be sending the entire log each time it changes.
You only really want to know about new messages and then you can append those new messages to the Log locally as they come in.
solar flower
@fossil spoke But how would you get around clients missing multicast RPC calls from beginplay? I feel like this is going to happen in several other actors, so is there a way to hold off the level starting until all playercontrollers are ready?
As a side note, I'm still trying to parse through the networking code, but when I hear Reliable i think TCP and i assume the unreliable is UDP. Is Unreal switching protocols when you mark functions as Reliable or Unreliable?
If the RPC call was queued I wouldn't have any issues, but it's dropped entirely.
fossil spoke
@solar flower Yes Reliable is TCP
Calling an Multicast on BeginPlay without giving consideration to clients not being fully loaded is what i was talking about.
Its your responsibility to ensure that you avoid "race conditions" like that.
If you have an Actor that is performing Multicast RPCs on BeginPlay you may need to rethink your design.
As far as im aware there is no way to find out if an Player has fully loaded the level from Blueprint.
solar flower
@fossil spoke Hmm, well i'm trying to set environment materials. It's not all that important how quickly they're set, but i'd like to keep it readable and modular and putting a 'set environment materials' function in my playercontrollers seems bad practice.
Is there a timeout limit for players to connect?
Wait a sec...The server will always run it's beginplay ahead of clients, right?
fossil spoke
Yes correct
If its an Dedicated Server then you will have an Arbitrary time for when the first client even connects
Depending on your game, it could be 30 seconds, it could be 2 days.
If you have something that is dependant upon the current state of the Game that needs to be replicated or passed to clients, then using the GameState as an proxy to fascilitate those parameters is ideal.
solar flower
@fossil spoke Not using a GameState either, what exactly separates it from the Game Mode or Instance? Or in other words, why would i need it? I feel like all my RPCs are dependent on the current state of the game and need to be replicated.
fossil spoke
The GameState is designed to ferry replicated information from the Server to all Clients, functionally it is very similar to the PlayerState
Ideally it is used to keep track of the state of an current game.
For exmaple.
If i was playing Capture the Flag
I would put on the GameState the current score for each team.
This means that when the Score is changed by the Server, it is automatically replicated and available to every player via the GameState being shared to all Clients
The clients are free to access and use information held on the GameState at all times (such that it is valid)
I use the GameState as an bridge between the Server and the Clients for game critical messages and information.
An further example.
Generally i need all clients to know when another client has just been killed (for killfeed and other information/events to trigger)
When the Server detects that an Client has just died, it asks the GameState to Multicast an Delegate call to all Clients with relevant information about the death of another Client
So that they can all do stuff about that
The ability for the GameState class to be accessable and replicated to all Clients means that, if for example the Score is changed, an new connecting Client, will always recieve the current most up to date score when they finish connecting.
There is no need to tell that Client manually that the Score is currently X, when they finish connecting.
solar flower
Ah I see, I think i've put similar functionality in plain actors or level BPs before.
Is there only one GameState (like the gamemode) and it exists on the Server?
But is visible to all connections
fossil spoke
No, GameState exists on the Server and all Clients
solar flower
So every connection would run the Tick
fossil spoke
PlayerState is slightly different, the Server and all Clients have access to every other Clients PlayerState
every connection would run the Tick Not sure what you mean?
GameState is an Actor, every Actor Ticks unless told otherwise?
solar flower
I meant that the clients run the GameState events locally as well? Sounds like they do. And these "state" classes are just there to allow more separation between game network logic and actor functionality?
fossil spoke
Yes, GameState exists on the Server and all Clients every Client has an GameState Actor. As for running events locally depends on how its setup.
Yes the *State classes are there to help fascilitate more network focused functionality from general Actors you could say that.
solar flower
@fossil spoke Thanks man, clears it up
fossil spoke
Epic has alot of documentation on both GameState and PlayerState classes and their intended purposes (as well as other just as important classes) you should check that out.
solar flower
will do
rare cloud
@raven holly, if you want to change player speed of the character do it on your character bp/class
I mean the logic is, player press the sprint button, call an RPC which change the speed of the player on server side
and you only need to put your speed var from the charachter on your anim graph
there is no gameplay feature on an anim graph
rare cloud
oh ok, normally forward vector and velocity is correctly replicated
I will confirm for velocity
@raven holly, the get velocity function is get from the RootComponent and sadly the ComponentVelocity var isn't replicated
raven holly
because im using this to check if the player is walking backwards
and sometimes the player will walk backwards on the spot
rare cloud
maybe you can get it from the CharacterMovementComponent
raven holly
it works sometimes, but sometimes it gets stuck
rare cloud
@raven holly, yeah the Velocity from the CMC seem to be correctly replicated
UMovementComponent has a FVector Velocity variable, which are updated by the CMC
civic belfry
Do you guys avoid nesting too many child blueprints inside each other? Seems like the more child BPs I use, the more buggy things become
modern dome
@civic belfry what do you mean by that? Using ChildActorComponents or having a Hierarchy of Blueprint classes?
twin juniper
hello
please
can I run 5 dedicated servers on a single machine with 5 ips? Or the steam doesnt allows it
civic belfry
@modern dome like having a blueprint in a blueprint that has blueprints in it
hierarchy I guess
thin stratus
Usually you have 1 BP Class and extend it via Components
And IF you have a second BP that you want to combine with the first one, you usually attach it
Or you use ChildActorComponent
jolly siren
@twin juniper yes you can
twin juniper
@thin stratus how do u avoid lag duplication of widgets
somehow, when the client lags, while dragging an item, it creates a dupe
any ideas how i could patch this up
it doesnt make a dupe in my db
but still
If anyone knows, pls assist
thin stratus
Lag duplication of widgets?
Never had that
Also, does anyone know how I can check if a PlayerState is just a dummy?
When people leave, UE4 creates a dummy PlayerState for them to reconnect and get their values back
But I don't want to add that to my widget lists, like playerlist
usually I check on BeingPlay if the owner is valid (serverside), but current system calls beginplay locally on everyone to add the widget entries
twin juniper
@thin stratus So, client lags while dragging a widget, after lag, there is now two of that widget. (One in the pre-drag, and one in the new slot)
What do you mean check if its just a dummy
thin stratus
I explained what a Dummy is
If you lave a network game, UE4 creates a PlayerState, in case you reconnect
That PlayerState lives for a few minutes before it gets destroyed. It also calls BeginPlay etc
twin juniper
o lol
i didnt read that
Could you have a timestamp
on it?
thats created in beginplay
thin stratus
Hm, I could simply instantly destroy it
but I assume it might still shortly flicker the new entry
twin juniper
So im assuming whats happening is players are being disconnected but the playerstate dummy is staying
and u dont want that
thin stratus
It's not staying
It's newly generated
it's a placeholder afaik
Imagine you get a DC
The placeholder has your kills/assists etc in it
If yo ureconnect in time, you will get that stuff back
night jay
playerstate is unused
I believe there's a bool checked somewhere
making it marked as inactive
night jay
pretty sure its the gamestate that keeps track of inactive playerstates I'm not sure
twin juniper
uhm
game state has a list
of all player states
@thin stratus I believe you'd want to check TArray<class APlayerState*> InactivePlayerArray, AddInactivePlayer(APlayerState* PlayerState, APlayerController* PC) and FindInactivePlayer(APlayerController* PC) in GameMode.
not 100% sure but what you might be interested in is OverridePlayerState(APlayerController* PC, APlayerState* OldPlayerState)?
thin stratus
OverridePlayerState is a function I exposed to BP iirc.
The InactivePlayer functions are, iirc, not exposed to BPs
guess I have to expose them then
ty
twin juniper
@thin stratus if you're doing this exclusively on the auth world (dedicated server, listen server owner, standalone), you could just do the path of least resistance and do a UFUNCTION(BlueprintCallable, Category="Game") TArray<class APlayerState*> GetInactivePlayerArray() const
that allows you to get the list from BP. If you need it to be event driven then yeah your solution would work 
thin stratus
On the server I can simpyl check if the Owner is valid
twin juniper
would be slightly slower than just getting the list, but that would work too haha