ref: c87f8512a4d736a847dbc69e09c781a29eeaa638
parent: 8eba39dd52a2a731225067fa4c3ae42cfb5b232f
author: Rangi <remy.oukaour+rangi42@gmail.com>
date: Wed Mar 11 13:10:06 EDT 2020
Add tools/used_space.py to visualize the ROM based on the .map file
--- /dev/null
+++ b/tools/used_space.py
@@ -1,0 +1,65 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+"""
+Usage: python3 used_space.py [pokecrystal.map] [used_space.png]
+
+Generate a PNG visualizing the space used by each bank in the ROM.
+"""
+
+import sys
+from pokemontools import png
+from colorsys import hls_to_rgb
+
+from mapreader import MapReader
+
+def main():
+ mapfile = sys.argv[1] if len(sys.argv) >= 2 else 'pokecrystal.map'
+ filename = sys.argv[2] if len(sys.argv) >= 3 else 'used_space.png'
+
+ num_banks = 0x80
+ bank_mask = 0x3FFF
+ bank_size = 0x4000 # bytes
+
+ bpp = 8 # bytes per pixel
+ height = 256 # pixels
+ assert bank_size % bpp == 0 and (bank_size // bpp) % height == 0
+
+ pixels_per_bank = bank_size // bpp # 2048 pixels
+ bank_width = pixels_per_bank // height # 8 pixels
+ width = bank_width * num_banks # 1024 pixels
+
+ r = MapReader()
+ with open(mapfile, 'r', encoding='utf-8') as f:
+ l = f.readlines()
+ r.read_map_data(l)
+
+ hit_data = []
+ default_bank_data = {'sections': [], 'used': 0, 'slack': bank_size}+ for bank in range(num_banks):
+ hits = [0] * pixels_per_bank
+ data = r.bank_data['ROM Bank'].get(bank, default_bank_data)
+ for s in data['sections']:
+ beg = s['beg'] & bank_mask
+ end = s['end'] & bank_mask
+ for i in range(beg, end + 1):
+ hits[i // bpp] += 1
+ hit_data.append(hits)
+
+ pixels = [[(0xFF, 0xFF, 0xFF)] * width for _ in range(height)]
+ for bank, hits in enumerate(hit_data):
+ hue = 0 if not bank else 210 if bank % 2 else 270
+ for i, h in enumerate(hits):
+ y = i // bank_width
+ x = i % bank_width + bank * bank_width
+ hls = (hue / 360.0, 1.0 - (h / bpp * (100 - 15)) / 100.0, 1.0)
+ rgb = tuple(c * 255 for c in hls_to_rgb(*hls))
+ pixels[y][x] = rgb
+
+ png_data = [tuple(c for pixel in row for c in pixel) for row in pixels]
+ with open(filename, 'wb') as f:
+ w = png.Writer(width, height)
+ w.write(f, png_data)
+
+if __name__ == '__main__':
+ main()