From 1ef0d697a62eff28115d6642c850ba4d01ef6a89 Mon Sep 17 00:00:00 2001 From: "Juan J. Martinez" Date: Fri, 16 Sep 2022 07:34:44 +0100 Subject: Added CAS support to the example game --- tools/png2scr.py | 140 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 140 insertions(+) create mode 100755 tools/png2scr.py (limited to 'tools/png2scr.py') diff --git a/tools/png2scr.py b/tools/png2scr.py new file mode 100755 index 0000000..5d08915 --- /dev/null +++ b/tools/png2scr.py @@ -0,0 +1,140 @@ +#!/usr/bin/env python3 +# +# Copyright (C) 2018-2022 by Juan J. Martinez +# +# Permission is hereby granted, free of charge, to any person obtaining a copy +# of this software and associated documentation files (the "Software"), to deal +# in the Software without restriction, including without limitation the rights +# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell +# copies of the Software, and to permit persons to whom the Software is +# furnished to do so, subject to the following conditions: +# +# The above copyright notice and this permission notice shall be included in +# all copies or substantial portions of the Software. +# +# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN +# THE SOFTWARE. +# + +__version__ = "1.0" + +import sys +from argparse import ArgumentParser +from PIL import Image +from collections import defaultdict + +DEF_W = 8 +DEF_H = 8 + +# TOSHIBA palette +MSX_COLS = [ + (255, 0, 255), + (0, 0, 0), + (102, 204, 102), + (136, 238, 136), + (68, 68, 221), + (119, 119, 255), + (187, 85, 85), + (119, 221, 221), + (221, 102, 102), + (255, 119, 119), + (204, 204, 85), + (238, 238, 136), + (85, 170, 85), + (187, 85, 187), + (204, 204, 204), + (238, 238, 238), +] + + +def main(): + + parser = ArgumentParser( + description="PNG to SCR file", + epilog="Copyright (C) 2018-2022 Juan J Martinez ", + ) + + parser.add_argument( + "--version", action="version", version="%(prog)s " + __version__ + ) + + parser.add_argument("image", help="image to convert") + + args = parser.parse_args() + + try: + image = Image.open(args.image) + except IOError: + parser.error("failed to open the image") + + if image.mode != "RGB": + parser.error("not a RGB image") + + (w, h) = image.size + + if w % 256 or h % 192: + parser.error("%s size is not 256x192" % args.image) + + data = image.getdata() + + color_idx = defaultdict(list) + color = [] + out = [] + ntiles = 0 + for y in range(0, h, DEF_H): + for x in range(0, w, DEF_W): + # tile data + tile = [ + data[x + i + ((y + j) * w)] for j in range(DEF_H) for i in range(DEF_W) + ] + + # get the attibutes of the tile + # FIXME: this may not be right + for i in range(0, len(tile), DEF_W): + cols = list(sorted(set(tile[i : i + DEF_W]))) + + if len(cols) > 2: + parser.error( + "tile %d (%d, %d) has more than two colors: %r" + % (ntiles, x, y, cols) + ) + elif len(cols) == 1: + cols.append(MSX_COLS[1]) + + for c in cols: + if c not in MSX_COLS: + parser.error( + "tile %d (%d, %d) has a color not in the MSX palette: %r" + % (ntiles, x, y, c) + ) + + # each tile has two coloributes per row + color_idx[ntiles * DEF_H + i // DEF_W] = cols + color.append((MSX_COLS.index(cols[1]) << 4) | MSX_COLS.index(cols[0])) + + frame = [] + for i in range(0, len(tile), 8): + byte = 0 + p = 7 + for k in range(8): + # 0 or 1 is determined by the order in the coloributes for that row + byte |= ( + color_idx[ntiles * DEF_H + i // DEF_W].index(tile[i + k]) << p + ) + p -= 1 + + frame.append(byte) + ntiles += 1 + out.extend(frame) + + sys.stdout.buffer.write(bytes(out)) + sys.stdout.buffer.write(bytes(color)) + + +if __name__ == "__main__": + main() -- cgit v1.2.3