Is there an simple tutorial to help get multiplayer working with the new Godot 4 multiplayer nodes?

[inner atlas]

If not, can anyone help me create simple lobby-based multiplayer?

Is there an simple tutorial to help get multiplayer working with the new Godot 4 multiplayer nodes?

[near mulch]

I've found a multiplayer fps example project on YouTube, if that would help you

I can link it

[inner atlas]

yes please!

[near mulch]

This is what i used to start implementing it in my game: https://youtu.be/n8D3vEx7NAE?t=1334
I recommend that you navigate using the chapters of the video as this is not only networking, but an entire multiplayer FPS from scratch. I only watched the multiplayer parts tho.

[inner atlas]

oh my god

i've been following it for about half an hour

this is it

finally i can add multiplayer and godot basically trivialises it

tysm!

[inner atlas]

...and i've jinxed my self and got a gamebreaking problem

Assertion failed: UPNP Invalid Gateway!

@near mulch not sure if you know how to fix this, but any pointers would help

even just the right channel to ask for help in

problem called due to this code -

        "UPNP Invalid Gateway!")```

[near mulch]

||Im pretty sure it gets explained in the video..|| Upnp tries to automatically port forward on the router so that people outside of your network can join ur game

You can do it manually in router settings if upnp doesnt work, and delete the upnp code

[inner atlas]

yeah, but I'm not sure how to remedy the issue

[inner atlas]

what would i need to change?

[near mulch]

You could just remove the assert()'s and all of its code inside and see if it still gives an error, I havent used the Upnp stuff much so Im not able to help much with it

If it does, removing the entire upnp function wouldnt break anything

Just makes hosting a game a bit more difficult (Most routers dont allow upnp by default either way so no difference)

[inner atlas]

i checked late last night and i think it still does

[inner atlas]

what would be some simple alternatives?

https://www.youtube.com/watch?v=nQ4P3ogXp2Q&t=515s

https://www.youtube.com/watch?v=bK41GF5sTf4

https://www.youtube.com/watch?v=d8QpnamQq1A

found some other tutorials

not sure which ones would allow lobby-based remote multiplayer though

[near mulch]

There is no alternatives

Upnp tries to port forward automatically

If its disabled in the router then theres no possible way other than manually going into the router control panel and making a port forward

[near mulch]

Then just remove all upnp stuffs

[inner atlas]

then that just causes it to break and not work anymore

let me check

yep

player 2 can't join if i remove the limiting assert lines

[near mulch]

As i said you should remove the entire upnp function as its only causing issues

If you want i can send you my minimal multiplayer example which i stripped out of that template from the video

[inner atlas]

thanks

I'll have a look

[inner atlas]

yeah I didn't get what you meant since how else would clients connect

[near mulch]

Upnp has nothing to do with clients

Its only trying to port forward on the host's router, when testing on your own network this isnt needed

[inner atlas]

i am inherently stupid

but is it needed when trying to play with other people?

[near mulch]

When you wanna test with people outside of your own home network youll have to go into your router's settings and setup a port forward (Just google and watch a yt vid)

... or enable Upnp in the router itself, which could however allow any program to open ports if it wants to, afaik

[inner atlas]

damn

ok

[near mulch]

Networking is confusing, dw

[inner atlas]

i guess ill have a look at other people's implementations

it's still easier than i expected with godot 4

[near mulch]

The multiplayer nodes are your friend:)

[inner atlas]

yeah

[inner atlas]

as a follow up to this, found a really helpful playlist of videos

https://www.youtube.com/watch?v=3xgDU4gRLps&list=PLRdlA0DoNf6_vWj7grJETu-m0HfUQV94L&index=5

in case anyone revisits this thread sometime before it's demise

[simple grotto]

Hi, could you take a look at this if you don't mind?

When I open the project in the editor I can rotate the character, but when I export and open the project I cannot rotate the character. Do you know how I can avoid this?

[near mulch]

Not sure - works for me

[idle copper]

theres webrtc and holepunching

[normal thicket]

Can you elaborate on that?

[blissful pasture]

Webrtc has protocols that allow peers to find each other https://developer.mozilla.org/en-US/docs/Web/API/WebRTC_API/Protocols

Hole punching is pretty simple:
Both peers send a udp packet to each other at their external ips and respective ports and the router will automatically port forward for the two (punch a hole).
They have to send a packet so their routers know where to send inbound packets, otherwise the router would get a packet to itself and not know which device to forward it to

You'll probably need a third server that the two peers talk to in order to orchestrate this (unless you're insane and do port knocking or icmp packet black magic)

[normal thicket]

Do i need to export for html5 for webrtc?

Or does it work on executables as well

Also, is there a tutorial you can recommend for this

[blissful pasture]

I think so yes, but web export is supposedly unstable in Godot 4 atm. I don't have a good tutorial for either. I'm sure there's a repo here or there you could try out for WebRTC, but hole punching isn't that common now that things like steam relay or EOS are around (many games just make people port forward)

[normal thicket]

I see, is there a tutorial on how to use steam/eos on Godot?

I couldn't find much

[blissful pasture]

Gramps is working on something called godotsteam, it has its own discord and GitHub repo but it doesn't work with the multiplayer API. EOS has a 3.x unofficial wrapper

https://godotsteam.com/
https://github.com/3ddelano/epic-online-services-godot

[fast sapphire]

did you ever find anything helpful for gd4 WebRTC?

I'm trying to get it to work in place of some web socket stuff I was doing.

[idle copper]

web platform or like windows linux platforms?

I think a gdextension needs to be installed and a websocket signaling server

https://github.com/godotengine/webrtc-native https://github.com/godotengine/godot-demo-projects/tree/4.0/networking/webrtc_signaling

This is the obvious information. The information I don't have is where it breaks. Aka the non obvious things

[fast sapphire]

I think that's what I need. I need to learn git and github better. Thanks!

[idle copper]

Let me know where it breaks

[fast sapphire]

Seems like my big challenge is certificates. What I was hoping to do was a jackbox style game where a computer would serve as the host/server and then people would connect from their phones but was planning on LAN only and just direct connecting with IP. But now it appears godot 4 only allows websocket connections that are secured, so the host PC needs to have a proper certificate. Same issue for webRTC where it needs a signaling server that can do WSS. So it seems like I'll need a proper signaling server or force godot4 to allow WS without security.

I guess having my host accept WSS somehow would also work.