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#!/bin/sh
# mapGen.sh
#
# Generate a map with ImageMagick from an input text file
#
# Usage: mapGen.sh [-s SIZE] [-f TILE_FOLDER] [-o OUTPUT_FILE] [SOURCE_FILE]
usageMsg="Usage: mapGen.sh [-s SIZE] [-f TILE_FOLDER] [-o OUTPUT_FILE] [SOURCE_FILE]"
cellSize=8
tilesDir="./tiles"
outputFile="out.jpg"
drawMap () {
mapText=""
while read line; do
mapText="${mapText}${line}\n"
done
mapText="$(echo "$mapText" | sed 's|\\n|\n|g')"
height="$(echo "$mapText" | wc -l)"
#width="$(awk '{print length($0)}' "$inputFile" | sort -nr | sed 1q)"
width="$(echo "$mapText" | awk '{print length($0)}' | sort -nr | sed 1q)"
height=$((height*cellSize))
width=$((width*cellSize))
[ ! -f "$outputFile" ] && convert -size "$width"x"$height" xc:cyan "$outputFile"
row=0
col=0
echo "$mapText" | (
while read line; do
echo "$line" | (
while read -n1 char; do
tileFile="$(find $tilesDir -type f -maxdepth 1 | sed 's|.*/||' | grep "^$char" | shuf | sed 1q)"
if [ -n "$tileFile" ]; then
tileFile="${tilesDir}/${tileFile}"
convert "$outputFile" "$tileFile" -geometry +"$col"+"$row" -composite "$outputFile"
fi
col=$((col+cellSize))
done)
row=$((row+cellSize))
col=0
done)
}
while echo "$1" | grep '^-' >/dev/null; do
case "$1" in
"-s")
[ -z "$2" ] && echo "Missing argument for -s. $usageMsg" >&2 && exit 1
cellSize="$2"
shift 2
;;
"-f")
[ -z "$2" ] && echo "Missing argument for -f. $usageMsg" >&2 && exit 1
tilesDir="$2"
shift 2
;;
"-o")
[ -z "$2" ] && echo "Missing argument for -o. $usageMsg" >&2 && exit 1
outputFile="$2"
shift 2
esac
done
[ ! -d "$tilesDir" ] && echo "Directory not found: $tilesDir" >&2 && exit 1
inputFile="$1"
[ -z "$inputFile" ] && drawMap && exit
[ ! -f "$inputFile" ] && echo "File not found: $inputFile" >&2 && exit 1
drawMap <"$inputFile"
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