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from PIL import Image
import numpy as np
import sys
colours = [(0xe0, 0xf8, 0xd0), (0x88, 0xc0, 0x70), (0x34, 0x68, 0x56), (0x08, 0x18, 0x20)]
if len(sys.argv) != 3:
print("Usage: ./extract-vram-tileset.py [vram_dump_file] [output_png]")
sys.exit(-1)
filename = sys.argv[1]
output_filename = sys.argv[2]
file = open(filename, "r")
vram_text = file.read()
vram = [int(x, 16) for x in vram_text.split()]
def parse_tile(image, tile, offset):
for y in range(0, 16, 2):
for x in range(0, 8):
colour_id = 0b00
colour_id |= (tile[y] >> (7-x)) & 1
colour_id |= ((tile[y+1] >> (7-x)) & 1) << 1
image.putpixel((x+offset[0],int(y/2)+offset[1]), colours[colour_id])
return image
image = Image.new("RGB", (128,128))
x = 0
y = 0
for tile_addr in range(0x1000, 0x1800, 0x10):
parse_tile(image, vram[tile_addr:tile_addr + 0x10], (x * 8, y * 8))
x += 1
if x == 0x10:
x = 0
y += 1
for tile_addr in range(0x800, 0x1000, 0x10):
parse_tile(image, vram[tile_addr:tile_addr + 0x10], (x * 8, y * 8))
x += 1
if x == 0x10:
x = 0
y += 1
image.save(output_filename)
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