flightgear_template

#!/bin/bash
#
# FlightGear Installer
# flightgear_template/flightgear
#
# This is a runner, and executable to run FlightGear installed with FlightGear Installer.
#
# Author:       Megaf - https://github.com/Megaf - mmegaf [at] gmail [dot] com
# Date:         03/09/2022
# GitHub:       https://github.com/Megaf/FlightGear-Installer
# License:      GPL V3

release="flightgear_release"
install_directory="flightgear_install_directory"

source "$install_directory/lib/libsay" # Imports libsay for pretty messages.

say "DEBUG: FlightGear Runner starter."

# Set LD library path to lib directory on the install location.
ld_lib="$install_directory/lib"
export LD_LIBRARY_PATH="$ld_lib"

is_gdb="$(which gdb)" # Checks if GDB is installed.

say "Welcome to FlightGear!"
say "FlightGear was proudly installed by FlightGear Installer."
say "FlightGear Installer was originally create by Megaf."
say "For bug reports and resquests, please visit:"
say "https://github.com/Megaf/FlightGear-Installer"
say "INFO: Library Path set to $LD_LIBRARY_PATH."
say "INFO: Set an environment variable 'debug=true' to enable gdb/verbose."

if [ "$debug" = "true" ] && [ "$is_gdb" ]; then
    say "WARNING: Debug is enabled and 'gdb' was found on your system."
    say "INFO: Running FlightGear in Debug + Verbose mode."
    say "INFO: Type 'run' in gdb to run."
    say "INFO: If FG crashes, type 'bt' in gdb to see the backtrace."
    gdb --args "$install_directory"/bin/fgfs -v "$*"

elif [ "$debug" = "true" ] && [ ! "$is_gdb" ]; then
    say "WARNING: Debug is enabled but 'gdb' was not found on your system."
    say "INFO: FlightGear will run in Verbose mode."
    say "INFO: Install 'gdb' to be able to debug and see backtraces."
    "$install_directory"/bin/fgfs -v "$*"

elif  [ ! "$debug" = "true" ]; then
    "$install_directory"/bin/fgfs "$*"
else
    say "ERROR: Something went wrong."
    say "INFO: release=$release, install_directory=$install_directory"
    say "INFO: ld_lib=$ld_lib, debug=$debug"
fi

say "DEBUG: FlightGear Runner ended."
exit 0