64 lines
1.7 KiB
Bash
64 lines
1.7 KiB
Bash
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#!/bin/bash
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# Function to display help message
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function usage {
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echo "Usage: $0 -i image_path [-s width height] [-n columns rows]"
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echo " -i image_path : Path to the sprite sheet image"
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echo " -s width height : Size of a single sprite (in pixels)"
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echo " -n columns rows : Number of columns and rows in the sprite sheet"
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exit 1
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}
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# Initialize variables
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img_path=""
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sprite_width=""
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sprite_height=""
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columns=""
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rows=""
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# Parse command line options
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while getopts "i:s:n:" opt; do
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case $opt in
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i) img_path=$OPTARG ;;
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s)
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sprite_width=${OPTARG}
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sprite_height=${!OPTIND}
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OPTIND=$(($OPTIND + 1))
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;;
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n)
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columns=${OPTARG}
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rows=${!OPTIND}
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OPTIND=$(($OPTIND + 1))
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;;
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*) usage ;;
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esac
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done
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# Ensure image path is provided
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if [[ -z "$img_path" ]]; then
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echo "Error: Image path is required."
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usage
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fi
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# Get image dimensions
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img_info=$(magick identify "$img_path")
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img_width=$(echo "$img_info" | cut -d ' ' -f 3 | cut -d 'x' -f 1)
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img_height=$(echo "$img_info" | cut -d ' ' -f 3 | cut -d 'x' -f 2)
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# Calculate sprite width/height from columns/rows, if provided
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if [[ -n "$columns" && -n "$rows" ]]; then
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sprite_width=$((img_width / columns))
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sprite_height=$((img_height / rows))
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elif [[ -z "$sprite_width" || -z "$sprite_height" ]]; then
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echo "Error: Either sprite size (-s) or number of columns and rows (-n) must be specified."
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usage
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fi
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# Output info
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echo "Splitting image $img_path into sprites of size ${sprite_width}x${sprite_height}..."
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# Use ImageMagick to split the sprite sheet
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magick convert "$img_path" -crop "${sprite_width}x${sprite_height}" +repage sprite_%d.png
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echo "Sprites successfully split into individual images (sprite_0.png, sprite_1.png, etc.)"
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