launcher

#!/bin/sh
# Example launcher
set -ex
VERSION=$1
if test -z "$VERSION"; then
	echo "Usage: launcher <version>"
	exit 64
fi

# Implement your Yggdrasil client here.
export auth_player_name=Steve
export auth_uuid=12345             
export auth_access_token=12345

export JVM_ARGS="-Xmx8192m -Duser.home=null"
export version_name=xxx
export game_directory=~/Minecraft/$VERSION/
export launcher_name=Shell
export launcher_version=Alex
export user_type=mojang
export version_type=release
export assets_root=$game_directory/assets/

source /usr/share/java/minecraft/$VERSION/launcher.gen
if test -e /usr/share/java/minecraft/$VERSION/launcher.fabric.gen; then
	source /usr/share/java/minecraft/$VERSION/launcher.fabric.gen
fi

# For old versions
# https://stackoverflow.com/a/8811800
contains() {
	string="$1"
	substring="$2"
	if test "${string#*$substring}" != "$string"
	then
		return 0
	else
		return 1
	fi
}

contains "$JVM_ARGS" "-cp" || JVM_ARGS="$JVM_ARGS -cp ${classpath}"
contains "$JVM_ARGS" "-Djava.library.path=" || JVM_ARGS="$JVM_ARGS -Djava.library.path=${natives_directory}"

mkdir -p $assets_root
mkdir -p $assets_root/skin
ln -s /usr/share/minecraft/assets/$assets_index_name/objects $assets_root/objects || true
ln -s /usr/share/minecraft/assets/$assets_index_name/indexes $assets_root/indexes || true

cd $game_directory
# For 1.12 and below, use this line instead:
# exec /usr/lib/jvm/java-8-openjdk/jre/bin/java \
exec /usr/lib/jvm/java-17-openjdk/bin/java \
        $JVM_ARGS \
        $MAIN_CLASS \
        $MC_ARGS