#multiplayer | Unreal Source | Page 436

worthy wasp Jan 8, 2019, 11:56 PM

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in MP - for widgets & shit

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i ALWAYS ALWAYS ALWAYS use GetOwningPlayer()

agile lotus Jan 8, 2019, 11:57 PM

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Yeah its for gamemode related stuff that I'm having the issue trying to give host the proper HUD when they return to lobby

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but it wasnt grabbing the host properly on return so he was stuck with client HUD and couldnt start the next match

normal girder Jan 8, 2019, 11:59 PM

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@thin stratus THK you a lot. It s Ok now. I still must really undertand clearly what i m wrong, but i on the way to understand now 😃

agile lotus Jan 9, 2019, 12:00 AM

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@worthy wasp What version of engine are you on

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I don't have the node GetPlayerControllerID

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oh I have it in ramas plugin

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NVM i have it built in if I'm grabbing from a PC object

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my b

low pond Jan 9, 2019, 4:08 AM

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For dedicated servers do most people use windows or linux?

worthy wasp Jan 9, 2019, 4:48 AM

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windows is easiest to build for - linux is 100% compatible for the OS but alot of the Plugins/Tools for UE4 that are out there arent developed for Linux -so you get compilation errors and have to build around it.

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the ones i've come across are glamour things that dont even relate to server code anyways - like keyboard lighting effects called 'Heartbeat'

fringe dove Jan 9, 2019, 4:50 AM

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has anyone else had problems with voice dropouts on recent ue4 versions?

cedar finch Jan 9, 2019, 5:18 AM

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Does anyone know why spawning a weapon pickup works for both server and client but the mesh doesn't switch? I set several variables such as the weapon name, ammo, mesh, etc. But for some reason the mesh doesn't show up for clients. 😦

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https://i.gyazo.com/69debb0206bccb132214603e3656fc40.png

worthy wasp Jan 9, 2019, 5:20 AM

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thats a REALLY loose knit question whippy - tons of reasons why it couldnt work -

A: Is the actor your spawning set to replicate?
B: WHat mode are you doing? DedicatedServer or ListenServer?

cedar finch Jan 9, 2019, 5:21 AM

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The actor is set to replicate and It's a listen server

worthy wasp Jan 9, 2019, 5:21 AM

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SetWeaponInfo - is this being ran AS SERVER - print string inside of this - it'll tell what mode it is (if you see STANDALONE then you arent setup properly for PIE MP Testing)

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and what is your MP Testing setup? It should be: https://puu.sh/CtHsZ/fe6cb668c6.png

cedar finch Jan 9, 2019, 5:25 AM

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Where in project settings is that again? It's been a while

worthy wasp Jan 9, 2019, 5:25 AM

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if you set the variables to EXPOSE ON SPAWN btw - all of these variables can be passed on the SPAWN ACTOR function....

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click the EDITOR PREFERENCES - PLAY (or the arrow next to the play button & ADVANCED SETTINGS)

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i would try the above first though - passing these variables into the ExposeOnSpawn mode

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this maybe have the effect you're looking for.

cedar finch Jan 9, 2019, 5:28 AM

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my settings are the same. So how I'm doing it now. I have another blueprint that is set to run on server. It spawns the weapon blueprint I showed you above and passes the info to it. https://i.gyazo.com/1e98a459310ccebeddb6ae48f911211b.png

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I spawn the weapon then get the info for it and pass it along.

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What I'm making is a Random Weapon Box. You use it, then it spawns a random weapon.

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I see what you mean though. I can clean it up with the expose on spawn.

worthy wasp Jan 9, 2019, 5:31 AM

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👍

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and it acts as a constructor

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so it SHOULD set these variabels for everyone to see

cedar finch Jan 9, 2019, 5:33 AM

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Ah nice! 😃 Thanks I'll try it now

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@worthy wasp Ok so it works the same way lol. 😦 It cleaned it up and made it super easy to use and look at but the mesh doesn't spawn for either now. Server and client can't see the mesh.

worthy wasp Jan 9, 2019, 5:42 AM

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try setting the StaticMeshComponent to replicate as well

cedar finch Jan 9, 2019, 5:44 AM

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I did that too. Am I not setting the model correctly? https://i.gyazo.com/cf2091f8cca0f265252620e2ef79b53f.png

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The mesh should change just like the other variables right?

worthy wasp Jan 9, 2019, 5:49 AM

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so the CLIENT sees the spawn

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but the mesh never chnages?

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and LISTEN SERVER - sees both?

cedar finch Jan 9, 2019, 5:50 AM

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Correct. Server and Client both see it spawned but no mesh

worthy wasp Jan 9, 2019, 5:50 AM

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server doesnt see mesh either?

cedar finch Jan 9, 2019, 5:50 AM

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https://i.gyazo.com/8543ad0270f17d01018fad13e183e054.jpg

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niether see it now

worthy wasp Jan 9, 2019, 5:51 AM

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WHO is spawning it?

cedar finch Jan 9, 2019, 5:52 AM

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The event is run on server. I can activate it as both a server and as a client but still no mesh

worthy wasp Jan 9, 2019, 5:53 AM

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1 min - boss on WoW - almost done ❤

cedar finch Jan 9, 2019, 5:54 AM

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hahahahaha lol ok

worthy wasp Jan 9, 2019, 5:57 AM

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ok dude

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so let me get a few things straight - something i'm thinking isnt clear yet

cedar finch Jan 9, 2019, 5:58 AM

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Ok whats up?

worthy wasp Jan 9, 2019, 5:58 AM

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your last message - sounds like there is an actor in teh world

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that you interract with

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and it grants (spawns) a random item?

cedar finch Jan 9, 2019, 5:59 AM

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Correct. So In my ThirdpersonCharacter I send an interface message. The RandomBox blueprint then spawns the weapon blueprint

worthy wasp Jan 9, 2019, 5:59 AM

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ok so hold on

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dont go much further....

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do you understand the difference between REplication and Ownership in regards to RPC events?

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in order for a server RPC to be ran - it must OWN the item its tryign to call an RPC event on (as server)

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now this gets REALLY finecky with ListenServer models

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because - the listen server runs as both Server AND client

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it has authoritation

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but it also runs as client...

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print stringing almost everything is a good debugging method

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to see how events are ran and what level they are ran as....

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in your above setup....

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i would be running the INTERFACE MESSAGE as a LOCAL FUNCTION (no RPC event)

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and have in there a print string directly after the event

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to see what level its coming in as

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i almost gaurantee the LIstenServer when sending this message will go through as listen server

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but there'll be a problem.....

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it doesnt own the actor

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i THINK (I'm still not the best at replication and fully understand it myself)

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you need to have a server RPC event after the local event....

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that way the ITEM is running its own RPC (as it owns itself.... technically the server owns it)

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and handles the authentication on server side

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i'm not 100% on this

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and testing with debug strings will help you along the way

cedar finch Jan 9, 2019, 6:03 AM

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I can show you how I setup my interface call.

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or message whatever you call it

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https://i.gyazo.com/e754158537b94ea21a597ce6033cf9be.png

worthy wasp Jan 9, 2019, 6:04 AM

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either way - the ListenServer callign the event will come through as ListenServer - it will have auth

cedar finch Jan 9, 2019, 6:04 AM

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https://i.gyazo.com/3b73588560396cd9ec5674526bca1aa8.png

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And the TurnOn event is the "Run on Server" event that spawns the weapon

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So when I put a print string in that image above Both server and client see it. But If i put it inside the TurnOn event which is set to Run on server then only the server see's it. Which seems correct.

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I'm scratching my head on this one.

worthy wasp Jan 9, 2019, 6:09 AM

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it doesnt matter that they see it

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it should say LISTEN SERVER or CLIENT at the beginning of it

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which is it?

cedar finch Jan 9, 2019, 6:09 AM

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That's what I mean.

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lol

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inside the Run on server only Server: Hello apears

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if i put it after the interface message recieved event i get, "Server: Hello" "Client: Hello"

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Because the interface is being sent as multicast

worthy wasp Jan 9, 2019, 6:11 AM

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ok i'm not fully understanding your want here.... i'm sorry

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this actor should spawn a random item for ALL TO SEE? correct?

cedar finch Jan 9, 2019, 6:12 AM

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Ok. So have you ever seen or played call of duty zombies? I'm trying to make the Random weapon box that players can use to get a weapon. All players can use it and see it

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Does that make sense?

worthy wasp Jan 9, 2019, 6:13 AM

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yes i'm with you

cedar finch Jan 9, 2019, 6:13 AM

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😃

worthy wasp Jan 9, 2019, 6:13 AM

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so the actor should be SPAWNED BY SERVER and the actor set to REPLICATE

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tehrefore - all will see it

cedar finch Jan 9, 2019, 6:13 AM

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Correct

worthy wasp Jan 9, 2019, 6:13 AM

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now....

cedar finch Jan 9, 2019, 6:13 AM

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And it works just no mesh

worthy wasp Jan 9, 2019, 6:13 AM

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setting its MESH PROPERTIES via the code you showed above (even after putting it ExposeOnSpawn) doesnt set the mesh

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correct?

cedar finch Jan 9, 2019, 6:14 AM

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Correct. I believe

worthy wasp Jan 9, 2019, 6:14 AM

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did you move the SetMesh() function that should be INSIDE THIS SPAWNED ACTOR.... into the CONSTRUCTOR?

cedar finch Jan 9, 2019, 6:14 AM

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No

worthy wasp Jan 9, 2019, 6:14 AM

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with the passed variable

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try that

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and for sanctity purposes - please make sure hte mesh is set to visible & n ot hidden in game 😛

cedar finch Jan 9, 2019, 6:16 AM

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ok so if i put it in the construction then the Server can see it but the Client cannot

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https://i.gyazo.com/9c701be57cb284368aefd7e4fba9301c.png

worthy wasp Jan 9, 2019, 6:17 AM

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is the skelmeshcomponent set to replicate?

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i dont think it needs to be....

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its hard to say though... re;lication is beign of my existence lol

cedar finch Jan 9, 2019, 6:18 AM

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https://i.gyazo.com/a6d31c7d5d385b799db73f5e1b353649.png

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set there and the variable is set

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the new mesh variable that is

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🤔

worthy wasp Jan 9, 2019, 6:21 AM

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same here man lol

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at a loss 😦

cedar finch Jan 9, 2019, 6:21 AM

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It doesn't make any sense

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Well I'm fine with redoing the whole thing. If you were to make something like a random weapon box how would you go about it. Maybe there's a better way that will work?

worthy wasp Jan 9, 2019, 6:25 AM

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in a perfect world -
Server Spawns the box with a struct exposed on spawn

Anyone opens the box runs the following:

Character->Box::Interact(InstigatorClient)
Box::Interact returns struct of item to add to inventory

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so the character runs a local function (basically a getter) which returns what item it should add to its inventory

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you can also take this opportunity to mark the box as LOOTED (boolean) that is LOCAL....

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that way - only the instance of this box on the LOOTED CLIENT will know that it has looted it - and it is therefore locked out

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you dont want this variable replicated.

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you probably dont even need to pass along the InstigatorClient - but if you need to - pass it along for whatever code reasons....

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i hate to say it - theres 10 different ways to skin a cat is the old saying - this fits that bill 😭

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but ideally would be just a getter funct - returning what item it should give to the player when looted

cedar finch Jan 9, 2019, 6:29 AM

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True. Thanks for helping out I appreciate it man. Even though I didn't fix it I learned some and cleaned up my blueprints. 😃

worthy wasp Jan 9, 2019, 6:33 AM

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i wont even try to say what i told you is the right way

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i dont have it in front of me - hard for me to debug it in my head

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i'm sorry

cedar finch Jan 9, 2019, 6:34 AM

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Your good. Your idea gave me an idea on how I may be able to get it working.

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I'm going to make a mesh inside my

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box blueprint and set it there for "looks"

worthy wasp Jan 9, 2019, 6:35 AM

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is this mesh just supposed to be the box?

cedar finch Jan 9, 2019, 6:35 AM

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Then the players can still get their weapon

worthy wasp Jan 9, 2019, 6:35 AM

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or the actual item awarded?

cedar finch Jan 9, 2019, 6:35 AM

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the item awarded

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I can get the weapon I just can't see what I'm getting

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the mesh for some reason isn't working on the client

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Hmm. So why is it that the weapon model at the bottom of this does not return a mesh for the client? https://i.gyazo.com/873e94e2b11d21e942bf1e6ea7c9453d.png

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It gets that value from the data table

worthy wasp Jan 9, 2019, 6:40 AM

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i dunno man... whos running the datatable lookup? is this buried in the RPC events?

cedar finch Jan 9, 2019, 6:41 AM

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the RunOnServer does it

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Now if I make a variable and Repnotify I can set it for everyone https://i.gyazo.com/879779d034ed82389854c681bcef60f0.png

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https://i.gyazo.com/e39535de42255b3fc1c24ae64984bc97.png

worthy wasp Jan 9, 2019, 6:43 AM

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man....

cedar finch Jan 9, 2019, 6:43 AM

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I feel like I'm going about it a "hacky" way in order to make it work.

worthy wasp Jan 9, 2019, 6:44 AM

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your telling me this whole time that the spawn item - was in the actor acting as your "loot box" ..... lol

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i really wish i had read into this

cedar finch Jan 9, 2019, 6:44 AM

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no it wasn't I just made this to see if i could make it work

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Hold on

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no

worthy wasp Jan 9, 2019, 6:44 AM

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i'm lost

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brain hurts

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take no offense

cedar finch Jan 9, 2019, 6:44 AM

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the spawn item is in the lootbox

worthy wasp Jan 9, 2019, 6:44 AM

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i cant think this through

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and i'm messing with my own project atm

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😭

cedar finch Jan 9, 2019, 6:45 AM

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lol your fine man. It's confusing

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Character->LootBox->spawns Item

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SpawnedItem gets info from Lootbox

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but Mesh doesn't replicate

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Me Tarzan, You Jane

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😉

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hahahahaha

worthy wasp Jan 9, 2019, 6:52 AM

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multiplayer - gives me grey hairs at times 😃 (most of the time)

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right now i'm battling LIstenServer - spectating the server as the client.....

cedar finch Jan 9, 2019, 6:53 AM

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I fought that one for months lol. Somehow I got it working though

worthy wasp Jan 9, 2019, 6:54 AM

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iu think my problem is not setting a pawn for the spectator controllers....

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but...

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when server spectates client in the SAME FASHION.....

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shit works just fine.

cedar finch Jan 9, 2019, 6:55 AM

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I'm trying to remember how I set mine up. I did it in playerstate I believe. I can look

worthy wasp Jan 9, 2019, 6:56 AM

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its weird....

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    if (ThisPlayer && ThisPlayersPC)
    {
        ThisPlayersPC->Possess(ThisPlayer);
        ThisPlayersPC->Client_YourTurnStarted();

        for (int i = 0; i < ConnectedPlayers.Num(); i++)
        {
            if (ConnectedPlayers[i] != ThisPlayersPC)
            {
                APawn* SpecPawn = SpawnPlayer(SpectatorClass->GetClass(), PlayerTransform);
                ConnectedPlayers[i]->Possess(SpecPawn);
                ConnectedPlayers[i]->SpectatePlayer(ThisPlayer, inPlayerState);
            }
        }
    }

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Server runs this - server spawns his own player - and possesses it fine

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all things happen fine on the server

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however

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the COnnectedClient should be passed the servers pawn (ThisPlayer)

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its valid....

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it isnt being passed.

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however - its valid - the damn ThisPlayer is checked, passes and fires into ConnectedPlayer->SpectatePlayer(ThisPlayer, inPlayerState);

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but for the net client - ThisPlayer isnt valid....

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this is comign from GameMode anyhow - and SpectatePlayer() is a ClientRPC

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i wonder if its the RPC event fking things up

cedar finch Jan 9, 2019, 7:00 AM

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So I know Gamemode is Server only

worthy wasp Jan 9, 2019, 7:00 AM

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you are correct

cedar finch Jan 9, 2019, 7:00 AM

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I set who to spectate inside my playerstate. I call that event though from my gamemode

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So In my Gamemode I spawn the Spectator then after Possession I call the event inside Playerstate that gets the person I am to spectate

worthy wasp Jan 9, 2019, 7:01 AM

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dude

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it was indeed the RPC

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i removed the RPC event - and it now spectates just fine

cedar finch Jan 9, 2019, 7:02 AM

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lol I had something like that too

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I was scratching my head going, "It should be working" then I change the RPC and it worked

worthy wasp Jan 9, 2019, 7:03 AM

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this deserves beer

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maybe even 2

cedar finch Jan 9, 2019, 7:04 AM

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HOLY CRAP!! I FIXED MINE!!

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lol

worthy wasp Jan 9, 2019, 7:04 AM

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lemme guess....

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removing RPC events 😛

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just when i think i got RPC figured out

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it throws me a left hook curve ball to the right

cedar finch Jan 9, 2019, 7:05 AM

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Naw I'll show you then explain lol

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Lootbox spawns the weapon: https://i.gyazo.com/5040d755d6de93aacb6b487973c7c23a.png

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I set the weapon as a varaible and set the mesh as a repnotify

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Now in the repNotify I can use that new variable to call an event inside the weapon blueprint: https://i.gyazo.com/a96e605e6827a989b12cbf8eaade2797.png

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That event sets the mesh: https://i.gyazo.com/7ef50e66ada2a0962720584e7b449d42.png

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BOOM it works perfect now. lol

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IDK why i had to do all that crap

worthy wasp Jan 9, 2019, 7:07 AM

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so i'm having a beer

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you should go get a beer

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lets beer cheer together ❤

cedar finch Jan 9, 2019, 7:07 AM

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🍻

worthy wasp Jan 9, 2019, 7:07 AM

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so i'm not gonna hunt for that emoji lol

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but ditto back at yah 😃

cedar finch Jan 9, 2019, 7:07 AM

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🍺

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hahahaha

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just type beer

worthy wasp Jan 9, 2019, 7:08 AM

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for me typing beer does nothing....

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#beer doesnt bring up anything

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/beer doesnt either

cedar finch Jan 9, 2019, 7:08 AM

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click the emoji on the right

worthy wasp Jan 9, 2019, 7:08 AM

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🍻

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bam

cedar finch Jan 9, 2019, 7:08 AM

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Aye!!

worthy wasp Jan 9, 2019, 7:08 AM

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its :

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got it

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learn something new every day

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thanks i'm a discord pro now!

cedar finch Jan 9, 2019, 7:09 AM

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We learning like crazy

worthy wasp Jan 9, 2019, 7:09 AM

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📛

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so one thing thats fking bothering me the past few days.....

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PIE testing with ProjectileMovementComponent

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my model is ListenServer

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and if i single player test this (it'll be Standalone) - it works just fine.

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if i MP test it (settings i showed you earlier)

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the ball sits there.....

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does nothing

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i'm going to finish up a few minor things - package the project and test it across 2 different machines

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it might be a fking PIE testing bug

cedar finch Jan 9, 2019, 7:12 AM

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Hmmm. That's a good question. I'll need to know that answer too. I haven't messed with that yet but I'm going to soon.

worthy wasp Jan 9, 2019, 7:12 AM

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anyhow - i'm kicking offf a package - and letting this cook in the background

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have a great night man - grats on figuring out your bugs

cedar finch Jan 9, 2019, 7:13 AM

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You to man! Thanks for helping me out. I'm glad you got your's working too

queen flower Jan 9, 2019, 9:04 AM

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🍺 i found the beer. congrats on the things!

hasty adder Jan 9, 2019, 12:33 PM

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🍺

supple musk Jan 9, 2019, 1:40 PM

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Hey guys i'm having trouble figuring out "NetOwner". I want to change the owner of an actor in order to be able to send RPC from my client on an actor that I "grip" ( i'm on VR ).

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Can I just create a NetOwner variable on my actor, override GetNetOwner and HasNetOwner and make it work ?

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I am able to achieve the desired result by calling SetOwner on the Server, but can I separate Owner and NetOwner ?

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And should I even try to separate them ? Is Owner really only there for Replication purpose ?

chrome bay Jan 9, 2019, 1:55 PM

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Owner is there for replication purposes but a few other things as well. But yeah, you will have to call SetOwner()

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Be sure to only call it on the Server of course

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Pawns actually do this when they are possessed.

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There is an engine bug at the moment, which may affect you if you have some replicated properties using COND_OwnerOnly or COND_InitialOrOwner etc.
https://issues.unrealengine.com/issue/UE-43135

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There is however, a PR in progress for it too:
https://github.com/EpicGames/UnrealEngine/pull/5353

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@supple musk

supple musk Jan 9, 2019, 2:03 PM

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Alright

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Thanks Jamsh

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Why would HasNetOwner and GetNetOwner be virtual then ? 🤔

chrome bay Jan 9, 2019, 2:16 PM

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I think those properties are only used for the relevancy checks e.g, only relevant to owner)

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The but actual actor owner is the only one who can send RPC's and receive OwnerOnly replicated vars

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At least that's how it worked last time I looked anyway

obtuse dirge Jan 9, 2019, 5:22 PM

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Does anyone have experience using unreal frontend over the network?

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I wanted to set this up to test steam lobby issues without constantly re-packaging my game and put it on another computer to test (you need to be on 2 different steam accounts..so different computers.. or maybe a VM I guess)

keen thorn Jan 9, 2019, 8:21 PM

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why dont u test in editor

obtuse dirge Jan 9, 2019, 8:24 PM

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Need to be on 2 different steam accounts

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To test on Steam

past gate Jan 9, 2019, 9:42 PM

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Hi there, having trouble with the simplest thing: Listen-Server, and with this, the Client doesn't seem to possess its pawn. Halp plz

📎 BugPossess.PNG

drifting plank Jan 9, 2019, 10:10 PM

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So you mix client and server nodes that's bad !

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Be sure that your Third Person Character is replicated to be spawned

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And after that send a Client RPC to use the client-only node "Set Input mode Game only"

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I think your actor is spawned but the player controller stills in "UI only"

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@past gate

past gate Jan 9, 2019, 10:13 PM

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Probably, the possess event works server side and all, so the Character is spawned and replicated to the Client, but the the rest doesn't follow through. I'll try what you said real quick, thanks 😃

drifting plank Jan 9, 2019, 10:14 PM

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You're welcome ;)

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Ask me if you still have an issue !

past gate Jan 9, 2019, 10:22 PM

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Yass ! That worked, thanks again 😄

next falcon Jan 9, 2019, 10:24 PM

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If i replicate a UObject are the BP propertys who are set to replicate actually replicating too?

winged badger Jan 9, 2019, 10:36 PM

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they are, but you need to do quite a few things to make that work

next falcon Jan 9, 2019, 10:46 PM

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what do i need to do ?

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@winged badger

winged badger Jan 9, 2019, 10:47 PM

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add them to actor bunch, implement prereplication

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there are 2 fairly complete articles on it near the top of google search

next falcon Jan 9, 2019, 10:48 PM

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can u give me the link ?

jolly siren Jan 9, 2019, 10:54 PM

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Does anyone have a good writeup on rpc ordering? If I send a server rpc and then send a client rpc on the same actor, will the server rpc always arrive first? Or is the ordering dependent on where we are sending them? In other words, client rpc execution order is guaranteed. And server rpc execution order is guaranteed. But not the mixing of client and server rpcs?

winged badger Jan 9, 2019, 10:55 PM

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hardware inbetween can break one way only

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and you have no ackowledgements

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i don't see how it would be possible to guarantee something like that

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@next falcon just google replicating subobjects unreal

jolly siren Jan 9, 2019, 10:56 PM

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okay, yeah I'm just trying to understand what ordering is guaranteed with rpcs. Since that is one of the main things people talk about with them

winged badger Jan 9, 2019, 10:56 PM

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you'll find it

next falcon Jan 9, 2019, 10:57 PM

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@winged badger The subobject is replicating and the Cpp propertys are replicating too but what about the Propertys in the BP graph of that Object ?

winged badger Jan 9, 2019, 10:57 PM

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i believe is has something to do with FPropertyChangedTracker

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to make it work

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but that is just an educated guess

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no, its called IRepChangedPropertyTracker

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check AActor::ReplicateSubobjects and AActor::PreReplication

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UActorComponent also has its own version of those

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and disclaimer: ReplicateSubobjects is required for them to replicate at all, but i just assume PreReplication is required for BP variables, it just seems to make sense

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i never went to replicate a variable declared in BP, let alone on a subobject

next falcon Jan 9, 2019, 11:06 PM

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Thanks ill take a look at that

winged badger Jan 9, 2019, 11:06 PM

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well, i did and didn't like how RepNotify works there

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so i just went full c++

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there are 2 more if you actually want to send RPCs through UObjects

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again, UActorCOmponent is a good read for that

normal girder Jan 9, 2019, 11:51 PM

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hello

#

i try to use playerState to save player Team

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so when in game mode i spawn my pawn and controller

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i set for playerState a variable : Team

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next, when controller create

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i want on constructor set a Team variable too, for esay acces it next in code

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but only thing that i have find is to do this

#

📎 unknown.png

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with

#

📎 unknown.png

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first : is it a bad means to do ?

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and, as you can see, i put a delay, else, the player state is at "none"

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does i m totaly wrong ?

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does it better to do a cast of playerState each time i want the team Value ?

next falcon Jan 10, 2019, 12:07 AM

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I would recommend to Get the Playerstate and cast it every time u nead the Team Variable

normal girder Jan 10, 2019, 12:10 AM

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it not less beautifull as code ?

jagged garden Jan 10, 2019, 12:10 AM

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I wouldnt put that stuff inside the constructor

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use begin play instead

normal girder Jan 10, 2019, 12:10 AM

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hum

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it a other question for me so :

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for me constructeur make the object

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and must pus all data

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Begin play, i believed taht is for 'launch'
i hesitate between two at each time...

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and in BeginPlay, same problem, i must put a delay

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but, i understand that you advide me to call the cast each time i want use it

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(?)

jagged garden Jan 10, 2019, 12:12 AM

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yeah I usually I have to use a delay as well. The server doesn't connect instantly

normal girder Jan 10, 2019, 12:13 AM

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yes, it seems normal

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but i ask me about this

jagged garden Jan 10, 2019, 12:13 AM

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but you can't use constructor because that runs even when the game isnt running and there is no server

normal girder Jan 10, 2019, 12:13 AM

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haa ok !

jagged garden Jan 10, 2019, 12:13 AM

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use begin play because it runs after everything is initialized and ready

normal girder Jan 10, 2019, 12:13 AM

#

oki

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all is ready, but i must wait a few

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else, it is at none

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but you say that a common mean to do so ?

jagged garden Jan 10, 2019, 12:16 AM

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at least for me, yeah

normal girder Jan 10, 2019, 12:16 AM

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ok

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it good to ear some opinion 😃 thk

worthy perch Jan 10, 2019, 11:37 AM

#

What is considered a good NetUpdateFrequency? For some AI, I have it set at 50. If it's too low, the character's rotations are jerky. But 50 seems really high.

red sand Jan 10, 2019, 11:39 AM

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Is it possible to replicate emitters?

thin stratus Jan 10, 2019, 11:41 AM

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Everything regarding visualy and sound etc. has to be replicated through RPCs

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or RepNotifies at least

red sand Jan 10, 2019, 11:42 AM

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I used multicast event

📎 unknown.png

winged badger Jan 10, 2019, 11:42 AM

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@worthy perch if you are running @60 frames a second, doing 50 net updates a second seems like an odd choice

thin stratus Jan 10, 2019, 11:42 AM

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Usually you want to use a non-reliable rpc

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You have to pass the location of course

red sand Jan 10, 2019, 11:43 AM

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It is non reliable, only Multicast

thin stratus Jan 10, 2019, 11:43 AM

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Buddy, where does this event get the Location from?

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This is not how networking works

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You are grabbing it from something else

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You have to pass it with the rpc

red sand Jan 10, 2019, 11:43 AM

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From here

📎 unknown.png

thin stratus Jan 10, 2019, 11:43 AM

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Yeah that's wrong

#

You have to pass it

#

The Clients don't have the same info in most cases?

red sand Jan 10, 2019, 11:43 AM

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ok great will do that

worthy perch Jan 10, 2019, 11:44 AM

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@winged badger , I was aiming to reduce net bandwidth. Should I think about FPS with regards to net updates especially since it is server related stuff?

thin stratus Jan 10, 2019, 11:44 AM

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You can only do that if the server and clients have the same info

winged badger Jan 10, 2019, 11:44 AM

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most times you spawn an emitter as a response to some gameplay action taking place

red sand Jan 10, 2019, 11:44 AM

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Thanks Cedric_eXi

winged badger Jan 10, 2019, 11:45 AM

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in those there is no need to separately spawn the emitter, it can be spawned just fine as a part of a replicated action

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well, at 60 FPS, you'd get an update 5 frames in a row, then skip 1 frame

red sand Jan 10, 2019, 11:46 AM

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And I was busy creating actors for every particle

winged badger Jan 10, 2019, 11:46 AM

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might as well run 30 updates a second that way

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note: there might be, and usually is a difference between servers and clients framerate

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so you might want to leave some buffer there, as well

worthy perch Jan 10, 2019, 11:47 AM

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For dedicated servers is frame rate the same as tick rate?

winged badger Jan 10, 2019, 11:47 AM

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if you are interpolating rotations client side

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you can get away with less updates

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leave to the clients to smooth it out

worthy perch Jan 10, 2019, 11:48 AM

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Yes, I think I will do that. I just hoped that CMC already could do that for rotations.

red sand Jan 10, 2019, 11:59 AM

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@thin stratus is it ok to make event reliable if it's not working out right

thin stratus Jan 10, 2019, 12:00 PM

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Reliable makes sure the event reaches the clients/server/destination

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But for effects, that's not needed

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You shouldn't care if once in a while of them doesn't reach

red sand Jan 10, 2019, 12:01 PM

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The thing is, it's kinda not replication this one, after the first particle

📎 unknown.png

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unless I make it reliable, it doesnt replicate

worthy perch Jan 10, 2019, 12:05 PM

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Is there a reason why the proceeding RPCs would fail? If you really need the particle, you probably want to restructure.

#

You could also spawn an actor that's replicated with a Emitter component.

red sand Jan 10, 2019, 12:06 PM

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I was replicating actors before with emitters xD.

worthy perch Jan 10, 2019, 12:06 PM

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Reliable calls are really not for aesthetics, and are, in my opinion, pretty dangerous.

red sand Jan 10, 2019, 12:09 PM

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gotcha, I went back with actors, since they seem to do the job

cosmic yoke Jan 10, 2019, 12:17 PM

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hello, is there a way to connect to a server just to get some information like number of players without entering the actual world?

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kinda like what sessions does

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but without using it

chrome bay Jan 10, 2019, 12:18 PM

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Unless you use the session system then no

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You could use Beacons, but they're not the easiest thing to work with

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The idea is that you don't connect to a Server at all, the server just "advertises" some information that can be gathered quickly

cosmic yoke Jan 10, 2019, 12:19 PM

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yes that seems to be what i need

#

didnt know that existed

thin stratus Jan 10, 2019, 12:20 PM

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Also beacons are still kinda session info?

cosmic yoke Jan 10, 2019, 12:21 PM

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i just a need a simple get number of players and if possible the ping

thin stratus Jan 10, 2019, 12:21 PM

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You will need some place to store the info anyway

chrome bay Jan 10, 2019, 12:21 PM

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Sessions is the way to go IMO

#

And yeah actually... beacons do require sessions anyway so yolo

cosmic yoke Jan 10, 2019, 12:24 PM

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sessions still work fine with a dedicated server setup right? I can use the null subsystem for local testing, but i would need my own subsystem when i have everything online no? think mmo server list (fixed static ips)

chrome bay Jan 10, 2019, 12:25 PM

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Sessions are pretty much essential for any online game

#

If you don't use Steam or some other service provider then yeah you need to write your own session interface for a custom subsystem

cosmic yoke Jan 10, 2019, 12:26 PM

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is that hard to do?

chrome bay Jan 10, 2019, 12:27 PM

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well.. depends on your experience

#

C++ only obviously

#

It's not straightforward, but if you have your own service provider then you have no other real option

cosmic yoke Jan 10, 2019, 12:29 PM

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ill try to look at some tutorials for that

#

i just have a list of static ips and i have to get their info, hopefully it wont be too complicated

chrome bay Jan 10, 2019, 12:32 PM

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I doubt there are any tutorials for it to be honest

night jay Jan 10, 2019, 12:38 PM

#

Anyone having worked with replication graph in online games with multiple local players?

cosmic yoke Jan 10, 2019, 12:43 PM

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@chrome bay thnks anyway 😃

west star Jan 10, 2019, 2:13 PM

#

Has anyone played around with custom dedicated servers, bypassing entirely ue4 code?

bitter oriole Jan 10, 2019, 3:29 PM

#

Well, this happened : https://arstechnica.com/gaming/2019/01/unity-engine-tos-change-makes-cloud-based-spatialos-games-illegal/

Ars Technica

Unity Engine ToS change makes cloud-based SpatialOS games illegal

Bossa Studios MMO Worlds Adrift among games affected.

chrome bay Jan 10, 2019, 3:50 PM

#

Man

#

Game engines are a liability..

blazing finch Jan 10, 2019, 3:51 PM

#

The way I'm understanding the ToS, it sounds like they are prohibiting any hosting of Unity game servers, unless it's through there services (or you've paid them lots of money)

#

That can't be right...

#

Hosting a Unity game server on an EC2 instance, for example, seems to be against the rules

chrome bay Jan 10, 2019, 3:52 PM

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Yeah it doesn't seem to be 100% clear... but that could be intentional

#

Apparently they've revoked improbable's license though and clarified it directly with them.

blazing finch Jan 10, 2019, 3:53 PM

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Yeh, probably intentionally ambigious

#

Hopefully Epic don't go the same route with the whole Epic Store stuff

chrome bay Jan 10, 2019, 3:54 PM

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Epic have done pretty good by most folks so far

#

But yeah.. you can never be entirely sure

fleet raven Jan 10, 2019, 3:54 PM

#

unity has been evil ever since they hired that new ceo

bitter oriole Jan 10, 2019, 4:00 PM

#

I checked and Epic's agreement can technically allow you to refuse such a change

fleet raven Jan 10, 2019, 4:01 PM

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yes, and they can not terminate it without an actual breach from your side either

bitter oriole Jan 10, 2019, 4:01 PM

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Yeah

#

But I said "technically" for a reason

#

"By logging in to your Account, using the Marketplace, or downloading or using additional Content or a new Version, you hereby agree to be bound by the amended Agreement then most recently issued by Epic"

#

Downloading a new engine version or using the marketplace is fine, but logging in to the Epic account will automatically accept the agreement

#

That's harsh

fleet raven Jan 10, 2019, 4:02 PM

#

that isn't how it works though

#

you can't accept it automatically

#

the launcher must present it when attempting to log in

#

I think it actually did that a few times in the past

bitter oriole Jan 10, 2019, 4:03 PM

#

That would be reassuring

#

"Unity reserves the right, at its sole discretion, to modify, discontinue or terminate the Services. Unity may also modify the Agreement at any time and without prior notice"

#

Right, I'm happy I'm on team UE4 here

umbral basin Jan 10, 2019, 4:06 PM

#

Same

blazing finch Jan 10, 2019, 4:06 PM

#

Is there a difference between that and: "bound by the amended Agreement then most recently issued by Epic"?

jagged stag Jan 10, 2019, 4:07 PM

#

Hey guys, I'm making a game that uses only one level and it should be playable in both single player and in co-op (up to 4 players). I'm currently setting up the main blueprints and I can't figure out if I should use GameModeBase and GameStateBase or their non-base variants. Which one should I pick?

bitter oriole Jan 10, 2019, 4:07 PM

#

@blazing finch Yes : Epic's version is not automatic

jagged stag Jan 10, 2019, 4:07 PM

#

I can add more info if needed

bitter oriole Jan 10, 2019, 4:08 PM

#

UE4's EULA states that you can keep using previously downloaded engine versions & marketplace content with the same terms if you don't log in & accept the new terms, or download new stuff

blazing finch Jan 10, 2019, 4:09 PM

#

Ah, that's good 😃

#

@jagged stag Depends what you need your game mode to do. GameMode gives you a bunch of extra stuff over GameModeBase

jagged stag Jan 10, 2019, 4:10 PM

#

It's open world

blazing finch Jan 10, 2019, 4:10 PM

#

I'd recommend using GameMode, until you want to stop it doing things (in which case, consider switching to GameModeBase)

jagged stag Jan 10, 2019, 4:10 PM

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and it has some advanced AI

#

same goes with gamestate I imagine? 😀

blazing finch Jan 10, 2019, 4:11 PM

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I would say so, yeh

jagged stag Jan 10, 2019, 4:11 PM

#

aight, thanks

chrome bay Jan 10, 2019, 6:08 PM

#

Sooo

#

https://unity.com/solutions/real-time-multiplayer/game-server-hosting

#

They disallow people to host themselves, offer a paid alternative instead

#

Talk about sticking the knife in

fleet raven Jan 10, 2019, 6:09 PM

#

br_big_brain

#

guess their solution must be absolute garbage then, if it was a better offer people would have used it on their own

jolly siren Jan 10, 2019, 6:17 PM

#

There is no guaranteed rpc ordering for reliable rpcs on separate actors correct?

For example,

Character::ServerManualPickup -> Gun::ClientGivenTo -> Character::ServerEquipWeapon

Character::ServerManualPickup

It isn't guaranteed that Character::ServerEquipWeapon has been called by the time the 2nd Character::ServerManualPickup is called.

chrome bay Jan 10, 2019, 6:18 PM

#

Yeah correcto

#

Only Reliable RPC's in the same actor maintain order

jolly siren Jan 10, 2019, 6:25 PM

#

Okay, that's what I thought.

I've seen Gun::ClientGivenTo(Pawn) fail because Pawn hasn't been created on the client yet.
And I've seen workarounds that call a client rpc on the pawn before the Gun rpc in order to force the replication of the pawn.

Pawn::ClientForceRep();
Gun::ClientGivenTo(Pawn);

But if the order of these client rpc's can't be guaranteed then that workaround is incorrect

#

Maybe the server should just reject subsequent pickup attempts if it is still trying to equip the previous weapon

thin stratus Jan 10, 2019, 6:31 PM

#

Well, on the Server you can easily lock the state

#

And wait for it to complete before trying to pickup again

#

Simple boolean /shrug

jolly siren Jan 10, 2019, 6:32 PM

#

Right, yeah I think that makes the most sense 😃

bitter oriole Jan 10, 2019, 8:14 PM

#

https://unity.com/solutions/real-time-multiplayer/game-server-hosting

Unity

Game Server Hosting with Integrated Matchmaking | Unity

Learn how Unity lets designers, engineers and marketing professionals in the automotive and transportation industries create interactive and immersive 3D virtual experiences.

#

This is getting better

twin vault Jan 10, 2019, 8:15 PM

#

today youre late on your news :p

bitter oriole Jan 10, 2019, 8:17 PM

#

I didn't saw that linked here 😃 Follow up on the Unity online disaster

kindred jungle Jan 10, 2019, 9:07 PM

#

Theoretical question: How viable is the scenario of using a dedicated server + client on a local PC instead of a listen server (player hosting the game would basically launch 2 apps). Dedicated server is a primary goal, but player hosting would be a nice addition (but probably not nice enough to deal with listen server and dedicated server at the same time).

twin vault Jan 10, 2019, 9:11 PM

#

making it work with both listen and dedicated shouldnt be harder

unique thunder Jan 10, 2019, 10:54 PM

#

From what I understand, changing walk speed (for run / sprint) has to be done on server & client so I set this up:

#

📎 unknown.png

#

But, without perfect ping, there's a glitchy lag every time the speed is changed where the server tries to correct or something.

#

Is there a more reliable set-up?

halcyon abyss Jan 10, 2019, 11:17 PM

#

does anyone know of a function to initialize my Gamemode after a seamless travel.?

#

i am working with gamemodebase

#

found it

peak patio Jan 11, 2019, 12:51 AM

#

Hey guys, I have a small problem with my project. When I launch dedicated server (from the editor) with 2-4 players :

The first player (with the server) always spawn on 0,0,0 with no pawn
The others sometimes spawn normally, sometimes on 0,0,0 with no pawn
Do you know how to fix that ?

#

I tried a MWE, but event if sometimes client spawn in 0,0,0 (I mean that the camera is on 0,0,0), it respawn "normally" after a few seconds (and that's not the case on my project, camera stay on 0,0,0)

peak patio Jan 11, 2019, 1:38 AM

#

Ok, so I override the ChoosePlayerStart function, as someone suggested me. So every players spawn normaly EXCEPT the first one (the server) that spawn at 0,0,0...

#

in fact, it's weird because I feel that the pawn spawn, but the first player don't posess it...

sharp pagoda Jan 11, 2019, 2:24 AM

#

@unique thunder The proper approach to that is a bit more complicated due to how the cmc works. Give these two articles a read: https://docs.unrealengine.com/en-us/Gameplay/Networking/CharacterMovementComponent https://wiki.unrealengine.com/Authoritative_Networked_Character_Movement

Authoritative Networked Character Movement

worthy perch Jan 11, 2019, 2:27 AM

#

For CMC changing walk speed, I've just been setting movement speed through OnRep.

unique thunder Jan 11, 2019, 2:27 AM

#

@worthy perch Is there noticeable latency when you do it onrep?

sharp pagoda Jan 11, 2019, 2:27 AM

#

What I linked is the proper way to handle it

#

Using an on rep is a hacky solution

worthy perch Jan 11, 2019, 3:26 AM

#

@sharp pagoda Hi, would there be any downsides to doing it OnRep/RepUsing?

sharp pagoda Jan 11, 2019, 3:27 AM

#

Yes, you're bypassing the cmc infrastructure to manually perform the local additives. CMC has a special move handling system that enables client-side movement with server auth that looks good for other clients as well

worthy perch Jan 11, 2019, 3:27 AM

#

Alright, thank you.

misty stirrup Jan 11, 2019, 3:47 AM

#

anyone have anything on the replication graph?

sharp pagoda Jan 11, 2019, 4:35 AM

#

@misty stirrup https://www.youtube.com/watch?v=CDnNAAzgltw and Shooter game's replication graph are some pretty nice places to start.

YouTube

UnrealEngine

Networking in 4.20: The Replication Graph | Feature Highlight | Un...

Working on a multiplayer game? Are there many players in-game together? On this livestream, our networking team will demonstrate 4.20's new Replication Graph...

▶ Play video

misty stirrup Jan 11, 2019, 4:37 AM

#

https://youtu.be/7P11RwKfuEM

YouTube

MazyModz

[UE4] Networking - ReplicationGraph (Tutorial & Overview)

In 4.21 the ReplicationGraph was released in Unreal Engine as it had been an experimental feature in 4.20. When I first heard about the ReplicationGraph in 4...

▶ Play video

#

found this too

night jay Jan 11, 2019, 7:33 AM

#

Question on replication graph though

#

I've heard it doesn't work well with splitscreen

#

Do we know more about that?

ripe folio Jan 11, 2019, 8:13 AM

#

Hey ya'll. How does one profile a dedicated server? Can't seem to connect Frontend to it, and stat startfile seems to do nothing (I tried executing the console command on a delay after BeginPlay just to test it).

#

I can connect a typical C++ profiler but then I can't see Blueprint times etc

#

Got it... it's -messaging passed on start-up

night jay Jan 11, 2019, 8:22 AM

#

What does -messaging do exactly if I may ask?

ripe folio Jan 11, 2019, 9:08 AM

#

@night jay it lets you connect the Unreal Frontend to the server, so you can profile it in real time

night jay Jan 11, 2019, 9:10 AM

#

Hmm cool, gotta keep that in mind

#

By the way, I believe there is no way to run commands on a server console no?

safe marsh Jan 11, 2019, 11:29 AM

#

uh

#

if I build a dedicated server for my project

#

do the client versions need to be built on the same engine version?

#

fx if I am using a launcher 4.20, and I then open the project in a source 4.20 will they work together?

tawdry wing Jan 11, 2019, 12:03 PM

#

@misty stirrup it's like a good tutorial on Replication

#

need to watch that

#

but it's only CPP not Blueprint

night jay Jan 11, 2019, 1:16 PM

#

Pretty sure Replication Graph is not exposed to BPs to begin with

peak patio Jan 11, 2019, 1:51 PM

#

I can't find a solution to my problem, I'm pretty sure it's simple, but can't find anything on it...
Where I run multiplayer (with or without dedicaded server), the first player always unpossessed its pawn, and if I force the possession, inputs doesn't work...

#

(everything else works fine, if I set 4 players, the players 2, 3 and 4 are correctly possessed and can by controlled)

winged badger Jan 11, 2019, 2:00 PM

#

just override HandleStartingNewPlayer and spawn+possess from there

peak patio Jan 11, 2019, 2:12 PM

#

Ok, I'll try that, thank you!

peak patio Jan 11, 2019, 3:25 PM

#

Here's what I did, but same problem, the first player "auto-unpossess" the pawn :/

📎 unknown.png

vital steeple Jan 11, 2019, 3:45 PM

#

@unique thunder I have a buff manager that seems to do it without issue. The server sends a client rpc to set the new speed, then sets it on the server. That seems to avoid hitching. I just modify the client first and the server after. No hitching or anything.

jagged stag Jan 11, 2019, 4:07 PM

#

hey guys, I'm trying to figure out the best way to replicate some variables from GameState all connected clients every 0.1 seconds. Is it best if every client has it's own timer that fires off an event that gets the variables from the GameState or should the GameState have the timer instead? I've been looking for this online but couldn't find an answer that's specific enought

#

P.S. The maximum amount of players in this case is 4

sharp pagoda Jan 11, 2019, 4:09 PM

#

@jagged stag Are you changing the value on the server every 0.1 seconds, or are you changing it constantly and only want it to send every interval?

jagged stag Jan 11, 2019, 4:13 PM

#

the variable is changing on a timeline (not sure how many times a second it updates), but I need to send it every 0.1 seconds or so

sharp pagoda Jan 11, 2019, 4:22 PM

#

@jagged stag A timeline updates every tick, which in your cases is probably every frame. There's no built in way to throttle net update rate per property afaik, so you could move the property to its own actor that you can control with the net update frequency, but that is a pretty hacky solution. You might find a way to throttle it in PreReplication(), but I haven't looked into the replication framework too extensively yet.

jagged stag Jan 11, 2019, 4:26 PM

#

couldn't I use a timer for this?

#

@sharp pagoda

sharp pagoda Jan 11, 2019, 4:30 PM

#

For what?

jagged stag Jan 11, 2019, 4:55 PM

#

nvm

peak patio Jan 11, 2019, 5:30 PM

#

Ok, so my problem comes probably from the pawn. I tried a "test" pawn with just a cube and a camera, and it works perfectly.
The pawn from my game is a BP based on custom CPP. I'll investigate. (PS : Even if no one knows here, that actualy help me to write it down ^^'...)

peak patio Jan 11, 2019, 5:50 PM

#

Just to illustrate, here is with basic pawn :

#

📎 unknown.png

#

and here is with the pawn of my game :

📎 unknown.png

#

the actor is created, but not possessed (actually, in the log,it's possessed but then unpossessed. and when I force player 1 to possess it, it doesn't respond to input)

kindred jungle Jan 11, 2019, 6:15 PM

#

Hi. I'm trying to make a dedicated server with steam, and then connect to it, but apparently I can't have both server and client running at the same time (the second one will fail to initialize steam).
Is there a way to get around that, or is it absolutely necessary to have 2 workstations? 😃 I'm using spacewar app id and Advanced Sessions Plugin.

bitter oriole Jan 11, 2019, 6:15 PM

#

@kindred jungle For Steam yeah there's no going around that

#

Need two machines

kindred jungle Jan 11, 2019, 6:16 PM

#

😦

bitter oriole Jan 11, 2019, 6:17 PM

#

Then again, Steam-specific development shouldn't be that much

#

You can stick to the null OSS and play locally without Steam

#

Steam only handles sessions

kindred jungle Jan 11, 2019, 6:17 PM

#

yeah, and thats the thing I want to test 😛

bitter oriole Jan 11, 2019, 6:18 PM

#

Need two machines then .

kindred jungle Jan 11, 2019, 6:18 PM

#

Thx

#

hope an old laptop will be enough 😃

misty stirrup Jan 11, 2019, 6:35 PM

#

@tawdry wing nah that video is for replication graph not replication in general, replication graph is c++ only atm

tawdry wing Jan 11, 2019, 6:35 PM

#

Hmmmm nice to know ! Thanks

#

I’m new on Network system lol

proven turret Jan 11, 2019, 8:57 PM

#

Someone can help me? Im doing a multiplayer game and only server is spawning with the correct pawn, the client is not spawning pawn

#

The client cant move or shoot, only look at skybox

peak patio Jan 11, 2019, 10:13 PM

#

@proven turret Do you have several "player start" ?

proven turret Jan 11, 2019, 10:13 PM

#

Yes

peak patio Jan 11, 2019, 10:14 PM

#

The clients never spawn, or they sometimes spawn ?

proven turret Jan 11, 2019, 10:23 PM

#

They spawn

peak patio Jan 11, 2019, 10:25 PM

#

You need to overide the "Choose Player Start" function in you game mode

#

with something like that :

📎 az1D4YI.png

vital steeple Jan 11, 2019, 10:27 PM

#

@jagged stag maybe use the timeline to update variable X, then use a timer to set variable Y to X, and have Y be replicated, then force net update

proven turret Jan 11, 2019, 10:32 PM

#

I do this, and not working...

📎 unknown.png

calm plaza Jan 11, 2019, 10:50 PM

#

super generic quesiton: im having trouble getting clients to find a created session. Set up through Steam OSS. Slots avialable 1. Have tried with the standard nodes and advanced session version. "Find Session" never returns any results. Ideas on where i could troubleshoot?

edgy galleon Jan 12, 2019, 12:01 AM

#

port forwarding?

calm plaza Jan 12, 2019, 12:02 AM

#

@edgy galleon is this in response to me? if so, could you explain?

peak patio Jan 12, 2019, 12:05 AM

#

Found out my problem : "Auto Possess Player" should be set at "Disabled"

#

(24h of debugging)

#

(I'm so stupid)

cedar finch Jan 12, 2019, 2:12 AM

#

Can the Event AnyDamage be used to send Score info back to the Instigator? https://i.gyazo.com/b7639669f4fcca41980164ec660466b5.png

#

So far it works for the Server player but not for clients. (Yes I know this is a server only node) Just curious if anyone knew a way to make it work. If not I'll use an interface

meager spade Jan 12, 2019, 2:24 AM

#

why would you want to send score back via that? make a custom interface and apply that, you can even call damage from inside that interface aswell

worthy perch Jan 12, 2019, 2:35 AM

#

@kindred jungle, you could probably get an EC2.

cedar finch Jan 12, 2019, 3:55 AM

#

@meager spade Yea that's what I was going to do. Thanks.

worthy wasp Jan 12, 2019, 4:07 AM

#

@cedar finch - just FYI - if you're going a C++ route - both ApplyDamage and TakeDamage return floats of the damage applied - though i have NOT played around with this in the past.

https://api.unrealengine.com/INT/API/Runtime/Engine/GameFramework/AActor/TakeDamage/index.html
https://api.unrealengine.com/INT/API/Runtime/Engine/Kismet/UGameplayStatics/ApplyDamage/index.html

AActor::TakeDamage

Apply damage to this actor. The amount of damage actually applied.

UGameplayStatics::ApplyDamage

Hurts the specified actor with generic damage.

#

i'm unsure how the BP implementations of these are wrapped up - but they have to be there somewhere as they virtually call the same functions as I just listed.

cedar finch Jan 12, 2019, 4:13 AM

#

@worthy wasp The blueprint nodes have the same. Thanks man

#

That's why I was going to use those becuase I already had them in place with my enemies and player. I thought why make an interface that does the exact thing those events do. But they are server only

worthy wasp Jan 12, 2019, 4:53 AM

#

they are server only for a reason - these events should be affecting 100% replicated variables.... UE4 did hte legwork for you in replication on these events :P

But in the meantime - if you're looking to store scores - drop these into a TMap onto the gamestate. While TMaps arent replicateable - you can create a local function that gets this information on the Gamestate - that tears it apart for whatever reasons you can think of and hten has out functions that are either multicast (sent to others) or just simply pump replicated variables that are retrievable by others.

thin stratus Jan 12, 2019, 9:41 AM

#

One diff between C++ and BP part of that is the "DamageEvent" struct

#

C++ passes that and it's super useful

#

BP only passes the UDamageType class/object

#

We extended the struct to pass info about what the player was doing when the shot happened

worthy wasp Jan 12, 2019, 11:44 AM

#

#StrugglesAreRealToday lol.

I have a listen server mode that i'm trying to setup (A golf game)

I have everything up to the point of hitting the golf ball - which is spawned on server for the owning player (the one its turn is).

I for the life of me cannot get my ListenServer to see the ball being hit... (ProjectileMovementComponent) - yet on my clients they see everything (i've tried more than 2+ players). All clients see everything fine - even when the ListenServer hits the ball - but the LIstenServer's viewport shows the ball sitting still.

The HitBall() is done as calculations on server (SuggestProjectileVelocity_CustomArc()) and then goes to a Multicast to 1:SetVelocityInLocalSpace() & 2: ProjectileMovementComponent->Activate() & 3: DebugSphere @ the location the ball should land.

Again this works fine for all net clients - even they see when the server hits... but my ListenServer viewport does nothing..... it does however print string all events and even draws the debug sphere on its own window.

ProjectileMovementComponent is set to Replicate - and the ball actor is set to replicate as well.

Anything i'm not thinking of here?

worthy perch Jan 12, 2019, 11:50 AM

#

@worthy wasp Are you on 4.20?

#

This might affect you: https://issues.unrealengine.com/issue/UE-62714.

worthy wasp Jan 12, 2019, 11:55 AM

#

4.21 inffact

#

i'm going to do a new project - test this again - just basic beginplay->ActivateProjectileCOmponent

#

thanks @worthy perch

worthy perch Jan 12, 2019, 12:21 PM

#

Just btw, someone had a problem with BeginPlay not being called on the ListenServer in PIE. I'm not sure if this is a because he tested it in PIE, but nontheless. Perhaps, if you have really strange results in PIE regarding server stuff, test in a packaged build.

worthy wasp Jan 12, 2019, 12:21 PM

#

yes we were discussing tha tthe other day

#

i see that issue in my game - and packaged too behaves the same way

lime skiff Jan 12, 2019, 1:38 PM

#

Hey guys, maybe you can answer: Why GIsServer is true on client and why GIsClient is true on dedicated server? Maybe I did something wrong ... see https://stackoverflow.com/questions/54160088/why-gisserver-is-true-on-client-and-why-gisclient-is-true-on-dedicated-server

Stack Overflow

Why GIsServer is true on client and why GIsClient is true on dedic...

In UnrealEngine, I get the following results when calling bool UWorld::IsServer()/bool UWorld::IsClient() and checking bool GIsServer/bool GIsClient:

┌──────────────────┬─────────────────────...

worthy perch Jan 12, 2019, 2:35 PM

#

@lime skiff Is that in PIE? Try in a packaged build.

lime skiff Jan 12, 2019, 3:46 PM

#

@worthy perch Yes, it was a PIE build. Single instance launched without editor printed that:

📎 unknown.png

red sand Jan 12, 2019, 3:47 PM

#

Can anyone tell me, when I go to targeting mode, the targeting Idle works in local but doesn't replicate

📎 unknown.png

worthy perch Jan 12, 2019, 4:07 PM

#

@lime skiff , Without editor? Is the target build Server? If you really want to run the Editor builds, I think you can add the -server command arg.

#

https://docs.unrealengine.com/en-US/Programming/Basics/CommandLineArguments

#

@red sand Is that in an AnimBP? I don't think it's possible (out of the box) for anAnimBP to replicate. Perhaps you want to replicate whatever IsTargeting is derived from.

red sand Jan 12, 2019, 4:25 PM

#

Yeah I did it with Custom Multicast Event in Gameplay Ability BP

lime skiff Jan 12, 2019, 4:30 PM

#

@worthy perch I got that output on a packaged build of a minimal example (https://github.com/roidanton/ue_isserver_isclient) and also on ue4editor.exe IsServer_IsClient.uproject -game. The option -server didn't gave me a gui. Guess I'd have to write to log then.

worthy perch Jan 12, 2019, 4:30 PM

#

Hmm, well, perhaps there's something wrong with how IsTargeting is getting set from the AnimBP.

#

@lime skiff , This is for dedicated servers, yeah? The way I've been doing it is : https://wiki.unrealengine.com/Dedicated_Server_Guide_(Windows_%26_Linux).

#

That's more or less the only way I know of.

#

But just to confirm, you have a MyProjectServer.exe?

#

You could also run with -log. But yeah, you should write to log.

#

I just took a look at your project, and you're missing a Server.target.cs, so you probably didn't build for Server.

lime skiff Jan 12, 2019, 4:37 PM

#

@worthy perch You're right, I have no server/server target. Thanks for your help, I'll have a look into this (don't have experience with packaging and the possibilities of the CLI of ue4/packaged games).

worthy perch Jan 12, 2019, 4:38 PM

#

Yeah, just follow that wiki. It's pretty good.

#

But I'm pretty sure the reason why IsServer() is return false is because that function relies on some macro that is only true when the build target is Server.

red sand Jan 12, 2019, 4:40 PM

#

It's working @worthy perch

lime skiff Jan 12, 2019, 4:43 PM

#

@worthy perch IsServer() and GIsServer are correct for the client in that scenario

ue4editor.exe IsServer_IsClient.uproject -server -log
ue4editor.exe IsServer_IsClient.uproject -game 127.0.0.1

😃

📎 unknown.png

cyan fox Jan 12, 2019, 7:45 PM

#

Hello I need help. How to work with two on a project ?

calm plaza Jan 12, 2019, 7:45 PM

#

@cyan fox use perforce. its easy to set up and free. P4D for server and P4V for connecting.

#

https://www.perforce.com/downloads/helix-core-p4d

Download Helix Core (P4D) | Perforce

Helix Core (P4D) is a free version control platform that stores and manages access to versioned files, tracks user operations, and records all activity in a centralized database. Download P4D now to get started.

#

https://www.perforce.com/downloads/helix-visual-client-p4v

Helix Visual Client (P4V) | Perforce

Helix Visual Client gives you visibility and control over your assets. Use the P4V download for time-lapse and revision views, insight into your project metadata, and a powerful GUI.

cyan fox Jan 12, 2019, 7:47 PM

#

It's a other game developement app ?

calm plaza Jan 12, 2019, 7:47 PM

#

https://www.youtube.com/watch?v=HOaDZEG49Z4

YouTube

Totally Unreal

Unreal Engine 4 / Perforce Setup - Pt 1 (Server Setup)

Ever wanted to work with friends on an Unreal Engine 4 project but just couldn't figure out source control? Look no further! Collaborate with your friends, w...

▶ Play video

cyan fox Jan 12, 2019, 7:47 PM

#

OHH ok

#

Thank you

calm plaza Jan 12, 2019, 7:47 PM

#

Yeah. Check out this youtube series. it will walk you through it.

#

Question fine people: is it possible to change the currently loaded map to a listen server using only blueprints? Asking for a friend....myself.

fleet raven Jan 12, 2019, 7:51 PM

#

reload the map in server mode

cyan fox Jan 12, 2019, 7:52 PM

#

Just my friend can join, or other guy can join ?

calm plaza Jan 12, 2019, 7:54 PM

#

@fleet raven is there way to do it with "Open Level"?

#

without*

#

@cyan fox i think up to 5 people is free. check the perforce site. it says.

cyan fox Jan 12, 2019, 7:55 PM

#

Ok, thank you, it was to know if people could bother us or not

calm plaza Jan 12, 2019, 7:58 PM

#

They would have to know the IP and Port to connect to. i believe you also can control who can setup an account under your server.

#

its not made public.

cyan fox Jan 12, 2019, 7:59 PM

#

Ok thank you

calm plaza Jan 12, 2019, 7:59 PM

#

no problem.

dawn summit Jan 12, 2019, 8:05 PM

#

@calm plaza @cyan fox it also password protected obviously, so no...

cyan fox Jan 12, 2019, 8:06 PM

#

okay thank you

twin juniper Jan 12, 2019, 8:18 PM

#

Anyone here with some knowledge of UDP and C#? Got a few questions :p

sharp pagoda Jan 12, 2019, 8:22 PM

#

Yep, fire away @twin juniper

twin juniper Jan 12, 2019, 8:27 PM

#

Been trying to make a game server recently (unity using C# and, sadly, TCP - but that worked fairly well - was able to run around and see each other ) now I wanna re do that using UDP (cuz UDP and games).
Since TCP is connection orientated and UDP is connectionless, I am having some trouble with that.
Do you have some help with that? Perhaps a good tutorial on making a server with multiple clients using UDP C# or something like that?

sharp pagoda Jan 12, 2019, 8:27 PM

#

Oh I have the perfect article for you hang on

twin juniper Jan 12, 2019, 8:28 PM

#

That would probably help me a lot

sharp pagoda Jan 12, 2019, 8:28 PM

#

https://gafferongames.com/

twin juniper Jan 12, 2019, 8:28 PM

#

as I said, I did that in TCP. That worked fairly well but was easier, I would assume

sharp pagoda Jan 12, 2019, 8:28 PM

#

He uses c++ in his code samples, but the concept is the same

#

Read all his articles on game networking

#

The connection oriented udp article in particular is what you'd want

twin juniper Jan 12, 2019, 8:30 PM

#

ye that sounds good. connection oriented. cheers

calm plaza Jan 13, 2019, 4:37 AM

#

anyone ever have issues with "Join Session" not traveling client to server map?

plain flume Jan 13, 2019, 5:38 PM

#

When using OnlineSubsysten=Null. Can we use Session that isnt using LAN?

#

Will other players find servers over the network?

sharp pagoda Jan 13, 2019, 7:30 PM

#

@plain flume Nope, the null subsystem does not have a master server for advertising game servers.

plain flume Jan 13, 2019, 7:48 PM

#

@sharp pagoda Thank you. I just read about the master server. How does one create one? Could something like this be used with Subsystem NULL : https://forums.unrealengine.com/community/community-content-tools-and-tutorials/44960-master-server-with-unreal-engine-4-plugin

Unreal Engine Forums

This is the place to show, share, and link to your stuff!

sharp pagoda Jan 13, 2019, 7:49 PM

#

You have to write your own custom subsystem for that, which is a quite a bit of work. I would either wait for MMT or use steam

worthy perch Jan 13, 2019, 7:55 PM

#

What's MMT?

sharp pagoda Jan 13, 2019, 7:55 PM

#

Epic's internal name for their subsystem

worthy perch Jan 13, 2019, 7:56 PM

#

Hmm, interesting.

plain flume Jan 13, 2019, 7:58 PM

#

In our project, steam is out of the picture, unfortunately. Is there any info page about the MMT?

sharp pagoda Jan 13, 2019, 8:03 PM

#

https://www.unrealengine.com/en-US/blog/epic-2019-cross-platform-online-services-roadmap

Unreal Engine

Epic 2019 Cross-Platform Online Services Roadmap

Throughout 2019, we’ll be launching cross-platform game services originally built for Fortnite, and battle-tested with 200,000,000 players across 7 platforms. These services will be free for all developers on all engines, all platforms, and all stores. Developers can choose...

plain flume Jan 13, 2019, 8:24 PM

#

@sharp pagoda thanks for help

cedar finch Jan 13, 2019, 8:55 PM

#

I'm trying to make my HUD widget display all 4 players names and scores. I have the variables set in playerstate and can retrieve them using the playerArray in Gamestate, but I'm not sure how exactly I should handle it. The HUD is the players hud. I want him to be able to see the other players scores that are in the game. Kinda like Call of duty zombies. Should I make a specific player score widget that holds a players info and then just add it to my hud as a child and set the info?

sharp pagoda Jan 13, 2019, 9:02 PM

#

@cedar finch Yes, use a vertical box (in your case), iterate through the player list, and for each make a new widget for the row, fill in the info, and add it to the box.

cedar finch Jan 13, 2019, 9:11 PM

#

@sharp pagoda Thanks. I think this is how to do it but I'm not sure where I need to call this function in order for it to work properly. https://i.gyazo.com/4995e27d841c830e0452d3a76e76bf49.png

sharp pagoda Jan 13, 2019, 9:13 PM

#

Gamemode's player join/left -> Dispatch event to all player controllers updatescoreboard() -> myhud->updatescoreboard() -> clear children and build the list again

cedar finch Jan 13, 2019, 9:15 PM

#

Ah! ok so use this https://i.gyazo.com/b2a5bf4a74e9a49696672f8bd5ed7b41.png

sharp pagoda Jan 13, 2019, 9:15 PM

#

And Logout()

cedar finch Jan 13, 2019, 9:16 PM

#

So I need to store the NewPlayer controller in an array?

sharp pagoda Jan 13, 2019, 9:16 PM

#

No, it will replicate

cedar finch Jan 13, 2019, 9:17 PM

#

Ok I'll give it a try

sharp pagoda Jan 13, 2019, 9:19 PM

#

You could also leverage gamestate::Add/RemovePlayerState

#

That might be a better solution

cedar finch Jan 13, 2019, 9:21 PM

#

Hmm so using the gamemode it seems my HUD is not created yet so the values don't get set

#

So this is what I tried but It never returns a valid HUD reference https://i.gyazo.com/a3c019dbc5eb0cb1512b41ad4430a558.png

sharp pagoda Jan 13, 2019, 9:26 PM

#

Yea because that makes no sense

cedar finch Jan 13, 2019, 9:26 PM

#

I guess becuase it's server and doesn't have created hud

sharp pagoda Jan 13, 2019, 9:26 PM

#

Remember, the hud is local

cedar finch Jan 13, 2019, 9:26 PM

#

yea

#

just remembered

sharp pagoda Jan 13, 2019, 9:26 PM

#

You're missing this step

📎 unknown.png

cedar finch Jan 13, 2019, 9:27 PM

#

So can I just get all actors of class?

sharp pagoda Jan 13, 2019, 9:28 PM

#

Yep

#

Filter by player controller

cedar finch Jan 13, 2019, 9:29 PM

#

So something like this? https://i.gyazo.com/d194446f4d81ee512e2a63a2d7fead4b.png

sharp pagoda Jan 13, 2019, 9:29 PM

#

Nope, you're doing the same thing

#

"Remember, the hud is local"

#

You can access it from the game mode

#

cant*

#

You have to dispatch a client RPC

#

Then the client can do it locally

cedar finch Jan 13, 2019, 9:31 PM

#

Hahaha Dang it! Sorry i understand IDK what's wrong with me

#

Ok I got my name working correctly now I'm going to try adding in the scores and see what happens. So far so good. Fingers crossed. Thanks for that help too by they way. 😃

#

Oh lord lol. It looks like it may be adding some extra stuff for the server. Clients look ok though: https://i.gyazo.com/7e0ccb330bd65815882e09cbb1d57177.jpg

#

The Colon doesn't get set it's just part of the child widget. So that has to mean that it's creating blank child widgets maybe due to existing PlayerState in the array. IDK

bleak lily Jan 13, 2019, 11:26 PM

#

https://gyazo.com/6cc11fb53c545cc0f068c94974152af3

Gyazo

#

I have a door that doesnt replicate

#

or doesnt really open when I try to do an rpc

edgy galleon Jan 14, 2019, 1:14 AM

#

is your door set to replicate?

calm plaza Jan 14, 2019, 2:14 AM

#

"Join Session" isnt traveling client to listen server. Tried on Lan and internet. Set up through Steam OSS. Any ideas what could be up?

#

Also, Join Session is showing successful. Just not traveling.

hard lance Jan 14, 2019, 3:03 AM

#

Hey all. In Blueprints im trying to have my GameMode bind to event dispatchers on my player character actors. Ive overridden the GM's OnRestartPlayer event and am trying to bind to each spawned actors event dispatcher. The event dispatcher only works on the server's player character though. The event will never trigger on a client. Any ideas on what I'm missing?

worthy perch Jan 14, 2019, 4:40 AM

#

@calm plaza I think Steam requires Seamless Travel. Are you using Seamless Travel?

calm plaza Jan 14, 2019, 5:11 AM

#

I do believe so.

#

thanks for the reply.

thin stratus Jan 14, 2019, 9:19 AM

#

wise depot Jan 14, 2019, 4:31 PM

#

if anyone has any experience with PS4 dedicated server and unreal please send me a PM, i'm struggling with something and can't quite figure out what to do and can't see a solution on the forum.

lament kettle Jan 14, 2019, 5:56 PM

#

Hey @thin stratus I know you worked on this amazing PDF about multiplayer. I haven't really been doing ue4 in the last few months. I was wondering if you've updated or added on to the PDF?

versed socket Jan 14, 2019, 6:08 PM

#

fwiw afaik the PDF hasn't been updated in like a year or two... but its stuff hasn't really changed very much I think?

thin stratus Jan 14, 2019, 6:31 PM

#

It's the basics

#

They haven't changed

sly kernel Jan 14, 2019, 7:14 PM

#

is there any difference between making MP game for PC and Android ? (talking about multiplayer specifics, not the game/mechanics overall)

versed socket Jan 14, 2019, 8:11 PM

#

Is a server capable of managing players in multiple Worlds? (i.e. if I enter a building in an MMO from the overworld, will the server manage both the overworld and the world I just entered?) If so, I imagine that must really tax servers when it comes to replication. Much more so then with all Clients in a single World.

lament kettle Jan 14, 2019, 9:18 PM

#

Ah okay. Thanks for the info guys.

thin stratus Jan 14, 2019, 9:50 PM

#

@sly kernel Replication-wise? No. It's all the same. Just the Subsystem is different (and supports different stuff).

#

@versed socket One Server, One World.

sly kernel Jan 14, 2019, 9:51 PM

#

@thin stratus so if I don't use Steam or Google specific online stuff, multiplayer is pretty much the same on any platform? (except for consoles maybe?)

thin stratus Jan 14, 2019, 9:51 PM

#

Usually yes.

sly kernel Jan 14, 2019, 9:57 PM

#

aye, thanks

bleak lily Jan 14, 2019, 10:51 PM

#

yeah here is my blueprints for the door opening

#

https://gyazo.com/690a5cadc0ea2c401e5f0c68c30e3799

Gyazo

#

I replicated the meshes too

#

it doesnt work anymore lol

bleak lily Jan 14, 2019, 11:54 PM

#

can anyone help me my door doesnt open for clients

#

I tried a different video but it doesnt work for clients

#

I even did rpc's

edgy galleon Jan 15, 2019, 12:48 AM

#

just made a door blueprint to test and this works for clients

#

📎 unknown.png

#

@bleak lily

bleak lily Jan 15, 2019, 12:50 AM

#

is executes on all multicast

edgy galleon Jan 15, 2019, 12:50 AM

#

yeah

bleak lily Jan 15, 2019, 12:50 AM

#

alright ty

#

yeah I didnt have the switch authority

#

that might be the issue

mild jungle Jan 15, 2019, 1:12 AM

#

Can anyone explain why SpatialOS is or isn't a huge deal? They show players shooting eachother across server boundaries but what are the real limitations of something like this? Taking PUBG as an example what issues would result from scaling up to 1000 players using this tech? Appreciate any help understanding this!

twin juniper Jan 15, 2019, 4:24 AM

#

Is there such thing as your character catching objects/items and keeping them in your character inventory or ewuipment for UE4? Say in a multiplayer Game, an enemy throws a grenade and I want to catch it, but I also have a spare pin to disable it, I can then have it to use for later?

fossil spoke Jan 15, 2019, 4:25 AM

#

Check the Marketplace for Inventory packs. There is plenty of that type of stuff around.

twin juniper Jan 15, 2019, 4:27 AM

#

@mild jungle my generic knowledge of Spatial is that it optimizes the server-client for better performance and workload so you can have bigger maps and more players. So it's a pretty big deal. Your main concern is just like any other networked Game, you want to make sure you have enough bandwidth to handle all data.

#

@fossil spoke Oh for real? I wasn't aware. Do you know of the top of your head which ones?

fossil spoke Jan 15, 2019, 4:28 AM

#

No mate, it takes 2 minutes to search

twin juniper Jan 15, 2019, 4:34 AM

#

@fossil spoke I don't think any pack has that?

severe widget Jan 15, 2019, 4:35 AM

#

well ofc not

fossil spoke Jan 15, 2019, 4:35 AM

#

It wont have it exactly, you have to do some of the work mate.

severe widget Jan 15, 2019, 4:35 AM

#

but you can make that mechanic

twin juniper Jan 15, 2019, 4:37 AM

#

So just BP a mesh and say is thrown by player, is in air, can be caught, player catch, player interact (pin grenade), place in inventory?

#

Is it that simple?

fossil spoke Jan 15, 2019, 4:37 AM

#

Try it and find out?

#

Nothing ventured nothing gained

severe widget Jan 15, 2019, 4:38 AM

#

If we did it in our game, maybe, for you probably not.

#

Like Devils says, try it out

twin juniper Jan 15, 2019, 4:40 AM

#

Hm. Would I need to get world location of object?

#

Or is that automatic, sort of just like dropping your weapon on the ground?

severe widget Jan 15, 2019, 4:44 AM

#

Sounds like you're just starting out. I'd honestly just start trying to make the mechanic work.

#

You can ask specific questions throughout slackers, but I've no idea if your grenade pin idea would technically require either object's location in that sense.

worthy wasp Jan 15, 2019, 6:43 AM

#

not to resurrect a dead horse - byut i'm coming up on what i think to be an engine bug and lookign to get some eyes on this - anyone else experiencing this?

I have a project - i made the project GameMode & GameState (NOT BASE) - and its a golf game. I'm utilizing UProjectileMovementComponent - and have soem very odd things happening in the GameMode & GameState setup..... My replication of physics is boinked!

I did a test with GameModeBase & GameStateBase - and its the SAME EXACT CODE for the ProjectileMovementComponent - and they work JUST FINE!!!!

I'm trying to understand where things are going wrong - if i can pin this down to a engine bug (4.21) or my own errors with coding..... Is anyone else experiencing this with GameMode & GameState in 4.21 (or even earlier)? Physics in a ListenServer or DedicatedServer are just falling to the ground and not replicating (Dedicated) or in ListenServer - physics works only on the clients.

This topic has been brought up several times the last couple of days (by myself and others) and i'm just tryign to help the engine out if it indeed is an engine glitch.

fossil spoke Jan 15, 2019, 6:52 AM

#

@worthy wasp Can you reproduce it on a blank project?

thin stratus Jan 15, 2019, 8:32 AM

#

@edgy galleon @bleak lily I'm pretty sure that is wrong though :P

#

You can't call that ServerRPC on the door

winged badger Jan 15, 2019, 9:22 AM

#

he doesn't have to

#

its triggered from overlap

#

so technically doesn't need RPCs at all

thin stratus Jan 15, 2019, 10:01 AM

#

Correct, however the Setup is still wrong, at least if this should show a correct one

#

It's working cause of all the double and tripple execution

edgy galleon Jan 15, 2019, 10:42 AM

#

Seemed way overkill for a door but wouldn't just setting a replicated bool and checking if it's open or not in the rep notify work

unique thunder Jan 15, 2019, 10:53 AM

#

📎 unknown.png

#

A log on my dedicated server. When I try to join it, I get sent to an offline version of the map and my connection is never established or something. I highlighted areas of interest but I don't fully understand what went wrong -- the callstack just says "UnknownFunction". If anyone can tell from that image, much appreciated !

wise depot Jan 15, 2019, 11:46 AM

#

well your server is crashing

#

run it with a debugger attached and see what's causing it

thin stratus Jan 15, 2019, 11:47 AM

#

@edgy galleon Yeah, but only if you are somehow on the Server.

#

And overlap is fine, but if you want to do it via Input, none of the images showed the proper solution

wise depot Jan 15, 2019, 11:48 AM

#

@unique thunder also, in WS_PlayerBP you have a function for replicating the username, however the property PUI_Username is invalid when you're trying to use it. same goes for OnRep_Team

#

inside of SetPlayerData

unique thunder Jan 15, 2019, 11:53 AM

#

@wise depot PUI_Username is a TextRender component that exists inside that blueprint so it can't be invalid. The component is set to Replicate though so that I can access other player's TextRenders and change visibility on my own client. OnRep_Team simply takes a variable from the GameInstance and sets it locally via OnRep which just changes the color of the TextRender.

How could these be null or fail? 🤔

wary wyvern Jan 15, 2019, 12:00 PM

#

Guys, how do you make load tests on your servers ? I want to test, how many players server can connect, but making >200 clients is pretty heavy 😃

unique thunder Jan 15, 2019, 12:01 PM

#

@wary wyvern Test it with a limit of 2 and if you can't pass it, your cap works :👌

#

Or are you trying to see when the server can't handle them anymore

wary wyvern Jan 15, 2019, 12:08 PM

#

Yeah, I want to know, how many players can handle

wise depot Jan 15, 2019, 12:10 PM

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"Accessed none trying to read PUI_Username"

#

it almost certainly is invalid

#

its possible that it just doesn't exist on a server

#

because it makes no sense for a text renderer to exist on a server

#

that aside, your crash will probably be unrelated. you need to attach a debugger to see what's going on

#

also, how are you packaging your server? for it to say unknown function implies it doesn't have any debug symbols

bleak lily Jan 15, 2019, 12:45 PM

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Yeah i want it so when I press the interact button the door opens

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I would do that through my actual player?

thin stratus Jan 15, 2019, 12:51 PM

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You have to

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Cause you can't call the ServerRPC inside of the Door

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Cause it's not owned by the client

wise depot Jan 15, 2019, 1:31 PM

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@thin stratus do you have any ps4 experience at all?

bleak lily Jan 15, 2019, 1:54 PM

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wait so the box overlay part is fine but I have to change the interact and put that in the playercontroller?

edgy galleon Jan 15, 2019, 3:07 PM

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Yeah I wouldn't check for input on the door if that's what you were doing

bleak lily Jan 15, 2019, 3:08 PM

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yeah I am trying to do this I will screenshot it

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https://gyazo.com/e11db720f88a792cfb9b29a55dde2fc2

Gyazo

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I casted it

#

in my player controller

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but I dont know what to make the object wildcard

edgy galleon Jan 15, 2019, 3:09 PM

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Have you looked at any interaction tutorials, usually you'd either check for interaction with line trace or add the actor to your interaction on overlap, if there are any interactions when you press a key you'd call the interact event on the object

bleak lily Jan 15, 2019, 3:10 PM

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yeah its a key press

thin stratus Jan 15, 2019, 3:10 PM

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Input Interact -> ServerRPC -> LineTrace -> CastHitActor to Door (or InteractInterface which would be better) -> Call Interact function

bleak lily Jan 15, 2019, 3:11 PM

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wait but wouldnt a linetrace work from really far away

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like if I am not close to it

edgy galleon Jan 15, 2019, 3:11 PM

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You can set the length

#

In your example you're trying to cast nothing to a door

#

Need to get the door somewhere

#

There's some nice and easy interaction tutorials you should look at, you'd be able to set anything up for interaction with your player with just an interface

bleak lily Jan 15, 2019, 3:30 PM

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I did the line trace and such but its kinda weird

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it works but when I look at the trace it hits something

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Ill screenshot it

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📎 unknown.png

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like it almost collides with the actor

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📎 unknown.png

#

I moved so you can see it but thats where I was originally

misty stirrup Jan 15, 2019, 5:05 PM

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does anyone have docs/tuts on creating two player/skeletal meshes montages? i want to make a grapple system using animations but im not sure if best practice is lining up actors by hand and firing two seperate montages

knotty sequoia Jan 15, 2019, 6:34 PM

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Any simple reason why when i request for (attached image) it always returns with no values?!?

📎 unknown.png

swift topaz Jan 15, 2019, 6:46 PM

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Simple reason: You might not be set to use an online subsystem and you might be using the null online subsystem.

#

Simpler reason: You're not connecting your logic to "OnSuccess".

knotty sequoia Jan 15, 2019, 6:52 PM

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oh right

#

it was on "OnSuccess"

#

it's like the array returns with no values

#

even though it should

#

@swift topaz when i do this the output Results seems to contain no values as the forEachLoop does not fire off

📎 unknown.png

swift topaz Jan 15, 2019, 7:07 PM

#

Do you have a valid online subsystem that you're connected through?

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such as steam?

knotty sequoia Jan 15, 2019, 7:07 PM

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yes

swift topaz Jan 15, 2019, 7:08 PM

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Are any sessions created on a separate machine?

knotty sequoia Jan 15, 2019, 7:08 PM

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i have a friend running the same game but hosting the advanced sessions game on his steam account, so yes

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plus it's the Spacewar Steamappid so im pretty sure there would be others anyway

swift topaz Jan 15, 2019, 7:10 PM

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Check logs, might have some debugging information in there.

knotty sequoia Jan 15, 2019, 7:11 PM

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nothing in the Message and Output logs that shouldnt be

swift topaz Jan 15, 2019, 7:12 PM

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¯_(ツ)_/¯

#

as long as you're both running the same build of the game, there should be no issues

#

Could be that the creation of the session is failing

knotty sequoia Jan 15, 2019, 7:14 PM

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correct me if i'm wrong, but if it did. wouldnt i still see other Spacewar games?

#

and as far as i know, its working

swift topaz Jan 15, 2019, 7:16 PM

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Back when I tested out the steam spacewar steamappid, I only got my own sessions, never anyone else.

knotty sequoia Jan 15, 2019, 7:16 PM

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Alright

swift topaz Jan 15, 2019, 7:16 PM

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Maybe it was a fluke, maybe it's how it is intended.

#

¯_(ツ)_/¯

#

Didn't spend too much time on sessions to be honest.

knotty sequoia Jan 15, 2019, 7:17 PM

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I remember reading that people would use one of the filters to specify what game it is to stop the thousands of other dev servers from appearing

wise depot Jan 15, 2019, 7:32 PM

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you also have to have the same version number

#

different version number will filter it out

knotty sequoia Jan 15, 2019, 7:34 PM

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I know there was a place to set it 8n the project settings, but does it update itself each time i rebuild it?

wise depot Jan 15, 2019, 7:37 PM

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nah

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we have a program hooked into our source control to do it for us

knotty sequoia Jan 15, 2019, 7:38 PM

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Yeah, in that case i havent changed it ever

edgy galleon Jan 15, 2019, 8:06 PM

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Try setting max results to like 10000

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Worked for some people, depending on how many people are playing on spacewar now

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Which is always thousands

knotty sequoia Jan 15, 2019, 8:39 PM

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@edgy galleon tried that, every time i get 0 results back

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kanna_cry

robust wind Jan 15, 2019, 8:56 PM

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Hey quick question how would I go about setting up a static camera for the players?
The way I did it stops working after server traveling from. Lobby to game using seamless travel 😅😬

knotty sequoia Jan 15, 2019, 9:32 PM

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uuuuuuurgh... Find Sessions Advanced is still not working!

modern dome Jan 15, 2019, 9:48 PM

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How would I Identify "others" on a client?
I want to replicate who paused the Game.
Since PlayerControllers do not exist on clients, I am unsure how I would identify who actually paused it. (so Others cannot unpause for example)

sharp pagoda Jan 15, 2019, 9:49 PM

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The playerstate would work

modern dome Jan 15, 2019, 9:51 PM

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So in my GameState I would have something like this?

UPROPERTY(EditAnywhere, Category = "ARPG|Game", ReplicatedUsing = OnRep_IsRingMenuOpen)
        bool IsRingMenuOpen;
    UPROPERTY(EditAnywhere, Category = "ARPG|Game", ReplicatedUsing = OnRep_PlayerWhoPaused)
        APlayerState PlayerWhoPaused;

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And then I use PC->GetPlayerState() to check if PlayerWhoPaused and GetPlayerState are equal?

sharp pagoda Jan 15, 2019, 9:52 PM

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Ehhhh, no. So you have a system where clients can pause and unpause the game, right? But only one person can "lock out" the pause at any given time?

modern dome Jan 15, 2019, 9:52 PM

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only the one who paused the game can unpause it

sharp pagoda Jan 15, 2019, 9:53 PM

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Alright so the clients should not need to know who actually locked out the pause, they just need to know that the game was paused by someone. Instead I would set it up to have clients send pause/unpause requests to the server, where the server can then determine whether or not to actually forward the request in the game mode.

modern dome Jan 15, 2019, 9:54 PM

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Oh. That makes much more sense.

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Thanks :)

knotty sequoia Jan 15, 2019, 9:55 PM

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Xenonic any idea with my issue?

sharp pagoda Jan 15, 2019, 9:56 PM

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Did you test in a packaged build?

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Are you both signed into steam accounts

knotty sequoia Jan 15, 2019, 9:56 PM

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yes and yes

sharp pagoda Jan 15, 2019, 9:56 PM

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When you shift tab does the steam overlay come up?

knotty sequoia Jan 15, 2019, 9:56 PM

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yes

sharp pagoda Jan 15, 2019, 9:57 PM

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CreateSession is probably failing, debug output for the failed pin of that

knotty sequoia Jan 15, 2019, 9:57 PM

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ok

#

lemmie try

jolly siren Jan 15, 2019, 9:58 PM

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Is it easy to send a UObject via a rpc parameter? Debating on whether to use a ustruct or uobject to store my player stats that are different per gamemode. I want to replicate them to all clients post-game to show on a full carnage report.

fossil spoke Jan 15, 2019, 9:58 PM

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Just use a Struct, are they short lived data?

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If they are just being displayed at the end of the round then use a Struct.

sharp pagoda Jan 15, 2019, 9:59 PM

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Yea I would use a struct in your case

knotty sequoia Jan 15, 2019, 9:59 PM

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Yeah, its not the create session

sharp pagoda Jan 15, 2019, 9:59 PM

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Success on that?

knotty sequoia Jan 15, 2019, 9:59 PM

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yup

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Success and no failures

sharp pagoda Jan 15, 2019, 10:00 PM

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Ok so open up your steam client on the computer that made the session

#

Click uh Settings?

#

In the toolbar up top

#

Find Download Region and make sure you are both in the same region

jolly siren Jan 15, 2019, 10:00 PM

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Okay, yeah that is what I would naturally use too. Just wasn't sure if replicating a UObject like that via rpc was doable

sharp pagoda Jan 15, 2019, 10:01 PM

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It's do-able, you just have to write a bit of boilerplate to replicate it before it can be net addressable

fossil spoke Jan 15, 2019, 10:01 PM

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Your almost always better off using an AInfo Actor anyway.

#

Actors were meant for replication.

#

If you need Replication, use an Actor

jolly siren Jan 15, 2019, 10:02 PM

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Right, yeah I've setup UObjects to replicate. Wasn't sure if that was all that is necessary to send them via rpc tho

fossil spoke Jan 15, 2019, 10:02 PM

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Im pretty sure there is a tutorial that outlines the basics of UObject replication. Its pretty straight forward once you understand whats happening.

#

But again, its much easier to just use an Actor.

sharp pagoda Jan 15, 2019, 10:03 PM

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@knotty sequoia Going to run for a bit, ping me when you get back

knotty sequoia Jan 15, 2019, 10:03 PM

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looks like a no

#

still borked

jolly siren Jan 15, 2019, 10:06 PM

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Yeah, I know how to replicate UObjects; that is simple and I definitely wouldn't use an Actor if all I want is replication. But I don't think that is all that is necessary for them to be rpc parameters. Don't I need to serialize them like this? https://forums.unrealengine.com/development-discussion/c-gameplay-programming/111612-serialize-a-uobject-so-it-can-be-sent-via-an-rpc-over-the-network
If the standard UObject replication setup is all that is necessary to send them via rpc then that is easy.

Unreal Engine Forums

For gameplay programmers writing C++ code.

robust wind Jan 15, 2019, 10:25 PM

#

@knotty sequoia you will Only get results from. Internet when steam is running and the steam overlay appears in the game and you are playing on 2 different machines with different accounts

edgy galleon Jan 15, 2019, 10:29 PM

#

I couldn't get advanced sessions with steam to find sessions either, only worked on lan

#

I'm guessing it was my router

sudden stream Jan 15, 2019, 10:29 PM

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I've never seen it work over the internet for Spacewar (the dev appID)

#

worked fine once I applied for(purchased) my own app

edgy galleon Jan 15, 2019, 10:30 PM

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Other people claim it does though, which is frustrating lol

#

Does your app have to be live to test it?

#

Cause I have a few of my own app ids

sudden stream Jan 15, 2019, 10:33 PM

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Yeah, I think so

#

Quick question, can Owner or Instigator be replicated to clients for actors spawned by the server at runtime?

knotty sequoia Jan 15, 2019, 10:45 PM

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@robust wind but you see... all of those were true!

worthy wasp Jan 15, 2019, 10:48 PM

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@sudden stream - Instigator is a controller - no? Other players have 0 ability to get the other players controllers.

As for Owner - if its a AACTOR - i dont see why not - AActor::GetOwner() is a public function - you obviously have to cast to whatever your intending it to be - unless you use an interface.

sudden stream Jan 15, 2019, 10:52 PM

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Using blueprints, both inputs on the Spawn() node seem to accept an Actor ref, in testing both GetOwner() and GetInstigator() return the correct reference when run serverside

#

but client consistently returns null

worthy wasp Jan 15, 2019, 10:56 PM

#

i'm sorry

#

you are correct - it is an APawn* object

#

however the tooltip - i dont know that it should even be used for SpawnActor().....

#

"Pawn Responsible for Damage caused by this actor." - i suppose for things like a weapon or projectile - sure

#

but i dont know how that differs from get owner

sudden stream Jan 15, 2019, 11:01 PM

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ye, Owner is an AActor* / Instigator is an APawn* but they don't appear to be replicated, which is a bit of bummer, suppose I'm going to have to add loads of boilerplate initialisation methods to my component blueprints

worthy wasp Jan 15, 2019, 11:03 PM

#

the reason i mistook instigator for a controller is the direct function GetInstigatorController() -

#

i just haphazzardly put 2 & 2 together

#

are you doign this on a TakeDamage (AnyDamage) function?

sudden stream Jan 15, 2019, 11:03 PM

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Yeah, that appears to just be a shortcut to calling GetInstigator(GetController())

#

Nah, just being a bit hacky, I'm spawning lots of attachments at runtime for turrets and such on a large vehicle

#

wanted a shorthand method to get a reference from the turret to the parent vehicle

#

Seemed a bit silly to replicate an additional variable if I could simply have used the Owner reference to get back to the parent vehicle

meager spade Jan 15, 2019, 11:12 PM

#

if they are spawned on the server (which they should be) then the Owner will be the truck

#

is not sure what the issue is

#

and if GetOwner() returns a PlayerController then client will see null

#

what does GetOwner return on the server?

sudden stream Jan 15, 2019, 11:16 PM

#

The server returns a valid reference to the Owner(Vehicle) correctly, the client returns null unfortunately

#

Not the end of the world

meager spade Jan 15, 2019, 11:17 PM

#

where are you spawning the attachements]

#

in the truck class?

sudden stream Jan 15, 2019, 11:17 PM

#

Spawning is done on the serverside via a custom SceneComponent

meager spade Jan 15, 2019, 11:18 PM

#

and the actor is set to replicate aswell as the scenecomponent?

sudden stream Jan 15, 2019, 11:20 PM

#

The SceneComponent isn't set to replicate but the Vehicle and Turret both are

#

Just found the issue

#

I was calling GetOwner / Get Instigator in the Construct graph

#

https://tenor.com/view/fillion-serenity-facepalm-well-gif-5500465

Tenor

#

Feel like a right twat now.

bleak lily Jan 16, 2019, 12:28 AM

#

hey I have a question my client's movement is really jittery

#

and it looks less smooth than the host

calm plaza Jan 16, 2019, 12:33 AM

#

Anyone else have the Destroy Session - Invalid Player State issue? I'm having connectivity issues and wondering if this is the cause.

#

[2019.01.14-23.14.55:332][452]LogNet: Browse: /Game/Maps/Lobby?listen
[2019.01.14-23.14.55:332][452]LogLoad: LoadMap: /Game/Maps/Lobby?listen
[2019.01.14-23.14.55:333][452]LogScript: Warning: Script Msg: DestroySession - Invalid player state

hard lance Jan 16, 2019, 2:34 AM

#

Hey all. In Blueprints im trying to have my GameMode bind to event dispatchers on my player character actors. Ive overridden the GM's OnRestartPlayer event and am trying to bind to each spawned actors event dispatcher. The event dispatcher only works on the server's player character though. The event will never trigger on a client controlled player. Any ideas on what I'm missing?

fossil spoke Jan 16, 2019, 2:58 AM

#

@hard lance The GameMode only exists on the Server, Clients do not have a GameMode so therefore they will never have those Events called.

hard lance Jan 16, 2019, 3:30 AM

#

@fossil spoke Yeah. What I am trying to do is have the GameMode subscribe to an Event Dispatcher for each spawned player. But it only works for one player (the server)

earnest moss Jan 16, 2019, 4:25 AM

#

Hi, I'm trying to work out multiplayer with Advanced Sessions. And it all works in the editor, but once I launch steam I'm no longer 'spacewar' but I become 'projectname' and I don't have the spacewar achievements or the invite/join friends, and am unable to find any hosted sessions. What step/steps have I missed?

glacial pollen Jan 16, 2019, 4:31 AM

#

I wish there was an on rep for actors spawned

#

Widget->PC(client)request->PC(server)request->GMspawn->PC(Client)NotifyWidget does not work

#

The initial reference will be valid in the widget, only for that call

#

After that the widget looses the reference. And let's not talk about the characters beginplay that hasn't executed yet

glacial pollen Jan 16, 2019, 5:02 AM

#

OMG unreal, fix your freaking engine. (not saving editor settings)

robust wind Jan 16, 2019, 7:10 AM

#

@knotty sequoia I struggled as well setting it up what worked for me was to raise the max results to something like 1.000 or 10.000 that resulted in a result and works only in standalone or packaged

cedar finch Jan 16, 2019, 7:16 AM

#

So I made an interface for my scoring system. It kinda works but I'm having issues with it too. So when I kill an enemy I want to get points for every bullet hit as well as the enemies death. My problem is that it only gives points for the first bullet hit, then waits until it's finished executing (i guess) then will give you more score if you shoot the enemy again.

#

https://i.gyazo.com/bb1760f58159c937d9afcad84f173380.png

#

So If I shoot the enemy in the chest I get 10 points, then immediatly right after I shoot him in the head and kill him. I still only got the first 10 points because It happened so fast. Where I should have recieved an additional 125 points.

knotty sequoia Jan 16, 2019, 7:39 AM

#

@robust wind you have pointed out all the things i have already done!

robust wind Jan 16, 2019, 8:11 AM

#

Ok haven't read that

earnest moss Jan 16, 2019, 9:25 AM

#

I found my issue, Advanced Sessions Plugin is broken for the current engine. Any attempt to package will stop your game from using the spacewars appid

ocean arrow Jan 16, 2019, 9:51 AM

#

What is the best direction to fuck off to if I wanted to find tutorials on net coding? (Unreal fighting game btw)
C++

bitter oriole Jan 16, 2019, 9:52 AM

#

There's a great UE4 MP tutorial on Udemy

ocean arrow Jan 16, 2019, 9:53 AM

#

It would show me the ropes for coding a C++ net code that would perhaps meet the demands of a fighting game?

bitter oriole Jan 16, 2019, 9:53 AM

#

https://www.udemy.com/unrealmultiplayer/

ocean arrow Jan 16, 2019, 9:53 AM

#

^^ my guy

bitter oriole Jan 16, 2019, 9:53 AM

#

It's pretty great, as someone who isn't new to this

ocean arrow Jan 16, 2019, 9:53 AM

#

Nice!

bitter oriole Jan 16, 2019, 9:53 AM

#

It goes beyond what UE4 does

ocean arrow Jan 16, 2019, 9:54 AM

#

1 day left on buying it for 94% off too

#

My luck

#

Thanks kind stranger!

bitter oriole Jan 16, 2019, 9:55 AM

#

Udemy is always at 94% off

#

That's the real price here

#

People will give me shit for linking Udemy because their sales tactics are basically illegal

#

This particular course is just good

ocean arrow Jan 16, 2019, 9:58 AM

#

Oh so I don't have to rush to the bank and buy it right now?

bitter oriole Jan 16, 2019, 9:58 AM

#

You don't.

#

It's going to be at that price 80% of the time

ocean arrow Jan 16, 2019, 9:58 AM

#

I am a few cents short of 11.99

#

Curious, have you ever net coded a fighting game?

#

I am making a smash bros style platform fighter

bitter oriole Jan 16, 2019, 9:59 AM

#

Nope, never done a fighting game.

ocean arrow Jan 16, 2019, 10:00 AM

#

Was wondering a ball park on what a pro would charge for net coding one such game with 12 characters.

#

I understand each facet of it needs to be coded with net play in mind.

bitter oriole Jan 16, 2019, 10:03 AM

#

Netcode is effectively going to be your code, it's very intrusive. I wouldn't let a third-party do it for you, because it's a lot of work that creeps everywhere, and needs to be very good to feel decent.

ocean arrow Jan 16, 2019, 10:03 AM

#

Is learning it from scratch somewhat of a fool's undertaking if I want this game out within a year or 2 wtih decent net code?

#

My C++ knowledge is.... weak

#

I understand this is the hardest piece of the puzzle to find in terms of building a studio

#

I have noticed net code guys are the most rare and expensive. It keeps me up at night.

bitter oriole Jan 16, 2019, 10:07 AM

#

UE4 netcode is far from unapproachable technically

#

Actually the concepts are somewhat simple

ocean arrow Jan 16, 2019, 10:07 AM

#

Is that hope I hear?

bitter oriole Jan 16, 2019, 10:08 AM

#

Yeah, don't get me wrong here

#

The hard part is designing your code to work with netplay, and that's where it gets hairy

#

There is never any universal solution that works across games

#

Some games accept that a remote player who shot something that was already gone on the server still shot it anyway

#

Some games will play very cleanly with shit networking because it's fine if the same thing isn't actually happening for everyone exactly the same

#

Some games will visually lag all the time because they're extremely fast paced

ocean arrow Jan 16, 2019, 10:11 AM

#

A smash bros fighter is sadly very fast paced

#

This leads me to the fear that all code must be in C++ over blue prints because a game requires maximum optimization.

#

Is this fear a reality?