pokecrystal/tools/dupeframes.py

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#!/usr/bin/env python3
# -*- coding: utf-8 -*-
"""
Usage: python dupeframes.py
Check for duplicate frames in Pokemon sprites (gfx/pokemon/*/front.png).
"""
import sys
import glob
import png
def check_duplicate_frames(filename):
with open(filename, 'rb') as file:
width, height, rows = png.Reader(file).asRGBA8()[:3]
rows = list(rows)
if height % width:
print(f'{filename} is not a vertical strip of square frames!', file=sys.stderr)
return
num_frames = height // width
frames = [rows[i*width:(i+1)*width] for i in range(num_frames)]
for i in range(num_frames):
for j in range(i + 1, num_frames):
if frames[i] == frames[j]:
print(f'{filename}: frame {j} is a duplicate of frame {i}', file=sys.stderr)
def main():
for filename in sorted(glob.glob('gfx/pokemon/*/front.png')):
check_duplicate_frames(filename)
if __name__ == '__main__':
main()