Launching Configuration

1. The LaunchConfiguration

The LaunchConfiguration is the central configuration object for launching Minecraft with Minified. It can be built using the LaunchConfiguration.Builder class, which provides a fluent API for setting various launch parameters.

Example usage:

LaunchConfiguration config = new LaunchConfiguration.Builder()
        .downloadThreads(10)
        .launcherName("YourLauncherName")
        .launcherVersion("1.0.0")
        .assetsDirectory(Path.of("<assets-directory>"))
        .librariesDirectory(Path.of("<libraries-directory>"))
        .jarFile(Path.of("<client.jar>"))
        .isDemoUser(false)
        .loader(new VanillaLoader("1.21.11"))
        .build();

val config = LaunchConfiguration.Builder()
    .downloadThreads(10)
    .launcherName("YourLauncherName")
    .launcherVersion("1.0.0")
    .assetsDirectory(Path.of("<assets-directory>"))
    .librariesDirectory(Path.of("<libraries-directory>"))
    .jarFile(Path.of("<client.jar>"))
    .isDemoUser(false)
    .loader(VanillaLoader("1.21.11"))
    .build()

2. Fields

Configure how Minecraft is downloaded, prepared, and launched.

Configuration Fields 17 available fields

minRam Optional

The minimum amount of RAM allocated to the Minecraft process.

Megabytes · Default: 2048

maxRam Optional

The maximum amount of RAM allocated to the Minecraft process.

Megabytes · Default: 4096

downloadThreads Optional

The number of threads used for downloading assets and libraries.

Default: 5

resolutionWidth Optional

The width of the Minecraft window. Only takes effect if set together with resolutionHeight via the resolution(width, height) builder method - see the note below.

Pixels · Default: 1920

resolutionHeight Optional

The height of the Minecraft window. Only takes effect if set together with resolutionWidth via the resolution(width, height) builder method - see the note below.

Pixels · Default: 1080

launcherName Optional

The name of the launcher. May be displayed in-game or in logs.

Default: "Launcher"

launcherVersion Optional

The launcher version. May be displayed in-game or in logs.

Default: "1.0.0"

demoUser Optional

Controls whether Minecraft launches in demo mode.

Default: false

jarFile Required

The path to the Minecraft client JAR file.

librariesDirectory Required

The directory where Minecraft libraries are stored.

assetsDirectory Required

The directory where Minecraft assets are stored.

nativesDirectory Optional

The directory where native libraries are extracted.

Default: <jarFile parent>/natives

customJavaExecutable Optional

A custom Java executable used to launch Minecraft.

Default: Recommended Java version via minified-java

extraJvmArgs Optional

Additional JVM arguments passed to the Minecraft process.

loader Required

The loader used to launch Minecraft. Must implement the

Loader interface.

Examples: VanillaLoader, FabricLoader

offlineUsername Optional

The username used when launching Minecraft in offline mode.

Default: "Player"

eventBus Optional

The EventBus used to dispatch events during the launch process.

Default: a new EventBus