File minecraft-launcher of Package minecraft-launcher

#!/usr/bin/env bash

#
# Bootstrap downloader & launch script for minecraft-launcher
#
# Copyright (c) 2021 SUSE LLC
# Copyright (c) 2021 Simon Vogl <simon.vogl@gmx.net>.
#
# All modifications and additions to the file contributed by third parties
# remain the property of their copyright owners, unless otherwise agreed
# upon. The license for this file, and modifications and additions to the
# file, is the same license as for the pristine package itself (unless the
# license for the pristine package is not an Open Source License, in which
# case the license is the MIT License). An "Open Source License" is a
# license that conforms to the Open Source Definition (Version 1.9)
# published by the Open Source Initiative.

# Please submit bugfixes or comments via https://bugs.opensuse.org/
#

# This launch script automatically uses Feral Gamemode if
# Feral Gamemode is available on the system.
# Set the environment variable MINECRAFT_GAMEMODE_DISABLED=1 in /etc/environment
# to disable Feral Gamemode even if Feral Gamemode is available on the system.

if test -f "$HOME"/.minecraft/launcher/minecraft-launcher; then
  if test -f /usr/bin/gamemoderun; then
    if [ "$MINECRAFT_GAMEMODE_DISABLED" = "1" ]; then
      echo "Starting Minecraft..."
      "$HOME"/.minecraft/launcher/minecraft-launcher
    else
      echo "Starting Minecraft with Feral Gamemode..."
      /usr/bin/gamemoderun "$HOME"/.minecraft/launcher/minecraft-launcher
    fi
  else
    echo "Starting Minecraft..."
    "$HOME"/.minecraft/launcher/minecraft-launcher
  fi
else
  echo "Minecraft not installed, downloading..."
  mkdir -p "$HOME"/.minecraft/launcher
  cd "$HOME"/.minecraft/launcher
  wget https://launcher.mojang.com/download/Minecraft.tar.gz
  tar -zxvf ./Minecraft.tar.gz
  mv ./minecraft-launcher/minecraft-launcher ./minecraft-executable
  rm -r ./minecraft-launcher
  mv ./minecraft-executable ./minecraft-launcher
  rm ./Minecraft.tar.gz
  if test -f /usr/bin/gamemoderun; then
    if [ "$MINECRAFT_GAMEMODE_DISABLED" = "1" ]; then
      echo "Starting Minecraft..."
      "$HOME"/.minecraft/launcher/minecraft-launcher
    else
      echo "Starting Minecraft with Feral Gamemode..."
      /usr/bin/gamemoderun "$HOME"/.minecraft/launcher/minecraft-launcher
    fi
  else
    echo "Starting Minecraft..."
    "$HOME"/.minecraft/launcher/minecraft-launcher
  fi
fi