Steam Multiplayer Peer

Description

The goal of this project is to greatly simplify the way that Steam Multiplayer is implemented in Godot. This project is a Godot Package that provides a simple API for creating and joining lobbies, and sending and receiving messages between players.

Installation

The example project shown above should give a good example on how to start up. A couple key things to note

Nuget Packaging is not working fully. Some nuance with the multi-platform builds. I will get to it sometime.

dotnet dotnet add package SteamMultiplayerPeer

package manager Install-Package SteamMultiplayerPeer

In the meantime, you can copy the code in the Steam Folder to your project, as well as the dll's, and follow the instructions below.

Once the package is installed you will have to add the following to the csproj:

  <ItemGroup>
    <Reference Include="Facepunch.Steamworks.Win64" Condition="'$(Configuration)' == 'Debug' and $([MSBuild]::IsOSPlatform('Windows'))">
      <HintPath>.godot\mono\temp\bin\Debug\Facepunch.Steamworks.Win64.dll</HintPath>
    </Reference>
    <Reference Include="Facepunch.Steamworks.Win64" Condition="'$(Configuration)' == 'Release' and $([MSBuild]::IsOSPlatform('Windows'))">
        <HintPath>.godot\mono\temp\bin\Release\Facepunch.Steamworks.Win64.dll</HintPath>
    </Reference>
    <Reference Include="Facepunch.Steamworks.Win64" Condition="'$(Configuration)' == 'Debug' and ($([MSBuild]::IsOSPlatform('Linux')) or $([MSBuild]::IsOSPlatform('OSX')))">
        <HintPath>.godot\mono\temp\bin\Debug\Facepunch.Steamworks.Win64.dll</HintPath>
    </Reference>
    <Reference Include="Facepunch.Steamworks.Win64" Condition="'$(Configuration)' == 'Release' and ($([MSBuild]::IsOSPlatform('Linux')) or $([MSBuild]::IsOSPlatform('OSX')))">
        <HintPath>.godot\mono\temp\bin\Release\Facepunch.Steamworks.Win64.dll</HintPath>
    </Reference>
  </ItemGroup>

The above snippet will add the Facepunch.Steamworks.Win64.dll to the project. This is the library that is used to connect to the Steam API.

You will need to have a Steam account to use the Steamworks API. You can create a Steam account here
I highly recommend getting your own steam app ID and setting up your own app in the Steamworks dashboard. This will allow you to test your game without interfering with other people's games. You can find the Steamworks dashboard here.
You will need to have the Steam client running on your computer to test the multiplayer. This is because the Steam API is used to connect to the Steam servers and create lobbies. You can download the Steam client here.

Usage

Create a SteamManager Reference at the root of your tree. Call Ready:

public SteamManager SteamManager { get; set; } = new SteamManager();

public override void _Ready()
{
	SteamManager._Ready();
}

Set the SteamAppId to your AppId from the Steamworks dashboard.
This will start steam, and allow you to use the steam API (shift tab)

Multiplayer

Create a SteamMultiplayerPeer instance
Either create or host a lobby to run the game.

FAQ

"It is not working locally"

Make sure that you have the Steam client running on your computer. This is required to connect to the Steam servers and create lobbies.
You will NEED TO HAVE A SECOND STEAM ACCOUNT RUNNING ON EITHER A SEPARATE COMPUTER OR A SEPARATE INSTANCE OF THE STEAM CLIENT WITH A SEPARATE INSTANCE. This is because the Steam API does not allow you to connect to the same lobby with the same account. This is a limitation of the Steam API, and there is no way around it.

License

This Project is Licensed under MIT License. See the LICENSE file for more information.