HL Steam backgrounds generator based on imagemagick

gen-steam-bg.sh

#!/bin/bash

file=$1

width=$(identify -format %W $file)
height=$(identify -format %H $file)
out=BackgroundLayout.txt

mkdir -p background
echo "resolution $width $height" >> $out

convert -crop 256x256 $file +repage background/tile%d.tga

num=0
for i in $(seq 0 256 $((height-1)))
do
	for j in $(seq 0 256 $((width-1)))
	do
		echo "resource/background/tile$num.tga scaled $j $i" >> $out
		num=$((num+1))
	done
done