games in real time

[bosh77]

Hi, how can I create an online multiplayer game, where apps can communicate with each other in real time? Is there any example or module with which you can do this?

 

[adamredwoods]

I don't think there's a specific module, but here's a limited example: https://www.cerberus-x.com/communit...ime-co-for-a-turn-based-multiplayer-game.639/

Cerberus X can use websockets, which is a good way to go, not sure if it uses WebRTC.
https://webrtc.org/getting-started/overview

You can do just fine with websockets game, but the difficult part is deciding on a server to maintain game sessions and state. If someone drops off for 3 seconds, how is the game handled? Using a self-hosted (or on AWS, Vultr) server is one way:
https://github.com/colyseus/colyseus

I think there are hosting game servers out there, Google Cloud seems to have one: https://cloud.google.com/game-servers
It would be possible to forego a server, but the two (or more) machines would have to know each other's IP addresses.

 

[bosh77]

Thank you very much. I'll try.

 

[bosh77]

Hello, I'm trying to work with sockets but I don't understand how to make communicate my Android device with the computer (forgive my ignorance).
If imposed an IP address different from Localhost, I get the Bind Failed error.
How do I use the IP address of the devices that I want to make communicate with each other?

 

[MikeHart]

If both devices share the same lan, it should work. Do they?

 

[bosh77]

I am trying with the example echoserver_tcp.cxs.
When imposed "localhost" as a address it works, but when I use the ip address of the machine it gives me error.

Class TcpEchoServer Implements IOnAcceptComplete

    Method New(port:Int)
        _socket=New Socket( "server" )
        If Not _socket.Bind(hostx, port) Error "Bind failed"
        _socket.AcceptAsync( Self )
    End
    
    ....

If I impose "hostx" with an IP address I get Bind Failed error, so I can't try on a LAN.

Also I don't have very clear ideas on the functioning of sockets. My goal is to be able to exchange data between devices to manage a multiplayer game.

 

[bosh77]

If both devices share the same lan, it should work. Do they?

Yes if I use local IP address I can connect my Windows app with my Android device.
But I can't make them communicate via remote IP address

 

[MikeHart]

So you have a Server running somewhere that shares the messages between connected devices? So for maybe asking stupid questions. It’s not my field of expertise.

 

[bosh77]

Yes, Windows and Android devices are connected to the home router

The problem is to connect them via remote IP

I am not an expert either

Maybe it is not possible to do as I think

the Bind method of the Socket class does not allow you to connect to a remote IP

 

[MikeHart]

Router<>Server

 

[SLotman]

Your router uses just "one" external IP #. If you assign this IP # to all devices, it won't work. You need to use the IPs your router gives your devices, something like '192.168.1.100' - open a command prompt and type "ipconfig /all" to see that on Windows.