cataclysm-launcher

#!/bin/sh

printerr() {
    echo "ERROR: $*" >&2
}

TARGET_FILE=$0

cd "$(dirname "$TARGET_FILE")" || {
    printerr "Could not change directory to '$TARGET_FILE'"
    exit 1
}
TARGET_FILE="$(basename "$TARGET_FILE")"

# Iterate down a (possible) chain of symlinks.
while [ -L "$TARGET_FILE" ]
do
    TARGET_FILE="$(readlink "$TARGET_FILE")"
    cd "$(dirname "$TARGET_FILE")" || {
        printerr "Could not change directory to '$TARGET_FILE'"
        exit 1
    }
    TARGET_FILE="$(basename "$TARGET_FILE")"
done

# Find the physical path and name of target file.
DIR=$(pwd -P)
BIN=$(basename "$0")

cd "$DIR" || {
    _errcode=$?
    printerr "Could not change directory to '$DIR'"
    exit $_errcode
}

# If name does not match a binary or is this same script, find the right one
if [ ! -f "$BIN" ] || [ "$BIN" = "cataclysm-launcher" ]
then
    BIN=
    for bin in cataclysm-bn-tiles cataclysm-bn
    do
    [ -f "$bin" ] && BIN="$bin" && break
    done
fi

if [ "$BIN" ]
then
    exec ./$BIN "$@"
else
    printerr "Couldn't find cataclysm game binary in '$DIR'/"
    exit 1
fi