CmlLib.Core

Minecraft Launcher Library

CmlLib.Core is a Minecraft launcher library for .NET
support all vanilla and mod versions (including Forge, Fabric, etc...)

한국어 문서

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Features

• Authenticate with Microsoft Xbox account
• Get vanilla versions and installed versions
• Install vanilla versions
• Launch any vanilla version (tested up to 1.21)
• Launch Forge, Optifine, FabricMC, LiteLoader or any other custom version
• Install Java runtime
• Install LiteLoader, FabricMC
• Launch with options (direct server connecting, screen resolution, JVM arguments)
• Cross-platform (Windows, Linux, macOS)

Go to the wiki for all features

Install

Install the CmlLib.Core Nuget package

QuickStart

Get All Versions

using CmlLib.Core;

var launcher = new MinecraftLauncher();
var versions = await launcher.GetAllVersionsAsync();
foreach (var version in versions)
{
    Console.WriteLine($"{version.Type} {version.Name}");
}

Launch the Game

using CmlLib.Core;
using CmlLib.Core.ProcessBuilder;

var launcher = new MinecraftLauncher();
var process = await launcher.InstallAndBuildProcessAsync("1.21", new MLaunchOption());
process.Start();

Launch the Game with Options

using CmlLib.Core;
using CmlLib.Core.Auth;
using CmlLib.Core.ProcessBuilder;

var path = new MinecraftPath("./my_game_dir");
var launcher = new MinecraftLauncher(path);
launcher.FileProgressChanged += (sender, args) =>
{
    Console.WriteLine($"Name: {args.Name}");
    Console.WriteLine($"Type: {args.EventType}");
    Console.WriteLine($"Total: {args.TotalTasks}");
    Console.WriteLine($"Progressed: {args.ProgressedTasks}");
};
launcher.ByteProgressChanged += (sender, args) =>
{
    Console.WriteLine($"{args.ProgressedBytes} bytes / {args.TotalBytes} bytes");
};

await launcher.InstallAsync("1.20.4");
var process = await launcher.BuildProcessAsync("1.20.4", new MLaunchOption
{
    Session = MSession.CreateOfflineSession("Gamer123"),
    MaximumRamMb = 4096
});
process.Start();

Documentation

Official documentation

한국어 문서

Example

Sample Launcher

Contributors

Made with contrib.rocks.