Peer 2 peer for multiplayer game

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1

Godot Version

4.4

Question

I have recently started with godot and want to make some 2 player card game. So first of all i wanted to try some simple networking where I just count up a shared counter by pressing a button, since I tought if this works I can also make a shared game state work.

My problem now is that I’m not sure how I can get this to run properly. I did the basic implementation with localhost address, which works just fine. I used the ENet functions for that.
When I try to use my public ip for the client address, it stops working. My guess is that its because I would need to forward the port in the router settings or smth. I also tried upnp, just gave me an error in the get_gateway().

Now my question is, are there any ways for a connection like this to work, without needing to change router settings?

2

Unlikely. When you want to play outside your network you need something to connect to.

If you are part of steamworks you can use their connection system

3

I have not worked with steamworks yet. Would there be any cost to this other that the 100$ for publishing on steam (i guess i have to do this)?
Is it possible to use their matchmaking and lobby server with just the steamworks account?
And have you ever worked with this in godot?

4

you only have to pay for the 100€ fee. Yes you can use their lobby system with the steamworks account. i have played around with it a bit. This will obviously only work with steam accounts

5

Ok thank you. I guess I might use steam for this then.

I case you got any hints or helpful stuff for turn based multiplayer games made in godot, I would appreciate any :smiley:

6

well i coded some turnbased stuff myself, but i dont have any specific hints right now, since its pretty straightforward. If you stumble upon some problems feel free to ask for help

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7

You’re probably looking for NAT traversal/hole punching. I’m sure there are libraries you can use for these features but they might not be specific to Godot. I think it’s also totally fine to port forward for testing and only implement NAT traversal when you finish the game.

8

Yea, but those didnt work for some reason with the router I use and without changing its settings. I dont have access to the router, so it seems like steam is the only good option there.

9

UPNP is not very good. If UPNP is the only thing you tried I wouldn’t give up. I don’t remember the technical name but there are (much better) ways to do NAT traversal than UPNP.

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10

Using steam now, wanted to publish a game anyways at some point and theres “only” the one time $100 for it. (Later realized that you have a testing appid aswell)

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