From adbd2511beec8f1caa1752bdfd755cc2f62ba425 Mon Sep 17 00:00:00 2001 From: 3gg <3gg@shellblade.net> Date: Sat, 9 Mar 2024 08:43:26 -0800 Subject: Make isogfx a library instead of an executable. --- gfx-iso/asset/mkasset.py | 324 ----------------------------------------------- 1 file changed, 324 deletions(-) delete mode 100644 gfx-iso/asset/mkasset.py (limited to 'gfx-iso/asset') diff --git a/gfx-iso/asset/mkasset.py b/gfx-iso/asset/mkasset.py deleted file mode 100644 index 3ca8a1d..0000000 --- a/gfx-iso/asset/mkasset.py +++ /dev/null @@ -1,324 +0,0 @@ -# Converts assets to binary formats (.ts, .tm, .ss) for the engine. -# -# Input file formats: -# - Tiled tile set (.tsx) -# - Tiled tile map (.tmx) -# - Sprite sheets (.jpg, .png, etc), 1 row per animation. -# -# Output file formats: -# - Binary tile set file (.ts) -# - Binary tile map file (.tm) -# - Binary sprite sheet file (.ss) -# -import argparse -import ctypes -import os -from PIL import Image -import sys -from xml.etree import ElementTree - -# Maximum length of path strings in .TS and .TM files. -# Must match the engine's value. -MAX_PATH_LENGTH = 128 - - -def drop_extension(filepath): - return filepath[:filepath.rfind('.')] - - -def to_char_array(string, length): - """Convert a string to a fixed-length ASCII char array. - - The length of str must be at most length-1 so that the resulting string can - be null-terminated. - """ - assert (len(string) < length) - chars = string.encode("ascii") - nulls = ("\0" * (length - len(string))).encode("ascii") - return chars + nulls - - -def convert_tsx(input_filepath, output_filepath): - """Converts a Tiled .tsx tileset file to a .TS tile set file.""" - xml = ElementTree.parse(input_filepath) - root = xml.getroot() - - tile_count = int(root.attrib["tilecount"]) - max_tile_width = int(root.attrib["tilewidth"]) - max_tile_height = int(root.attrib["tileheight"]) - - print(f"Tile count: {tile_count}") - print(f"Max width: {max_tile_width}") - print(f"Max height: {max_tile_height}") - - with open(output_filepath, 'bw') as output: - output.write(ctypes.c_uint16(tile_count)) - output.write(ctypes.c_uint16(max_tile_width)) - output.write(ctypes.c_uint16(max_tile_height)) - - num_tile = 0 - for tile in root: - # Skip the "grid" and other non-tile elements. - if not tile.tag == "tile": - continue - - # Assuming tiles are numbered 0..N. - tile_id = int(tile.attrib["id"]) - assert (tile_id == num_tile) - num_tile += 1 - - image = tile[0] - tile_width = int(image.attrib["width"]) - tile_height = int(image.attrib["height"]) - tile_path = image.attrib["source"] - - output.write(ctypes.c_uint16(tile_width)) - output.write(ctypes.c_uint16(tile_height)) - - with Image.open(tile_path) as im: - bytes = im.convert('RGBA').tobytes() - output.write(bytes) - - -def convert_tmx(input_filepath, output_filepath): - """Converts a Tiled .tmx file to a .TM tile map file.""" - xml = ElementTree.parse(input_filepath) - root = xml.getroot() - - map_width = int(root.attrib["width"]) - map_height = int(root.attrib["height"]) - base_tile_width = int(root.attrib["tilewidth"]) - base_tile_height = int(root.attrib["tileheight"]) - num_layers = 1 - - print(f"Map width: {map_width}") - print(f"Map height: {map_height}") - print(f"Tile width: {base_tile_width}") - print(f"Tile height: {base_tile_height}") - - with open(output_filepath, 'bw') as output: - output.write(ctypes.c_uint16(map_width)) - output.write(ctypes.c_uint16(map_height)) - output.write(ctypes.c_uint16(base_tile_width)) - output.write(ctypes.c_uint16(base_tile_height)) - output.write(ctypes.c_uint16(num_layers)) - - tileset_path = None - - for child in root: - if child.tag == "tileset": - tileset = child - tileset_path = tileset.attrib["source"] - - print(f"Tile set: {tileset_path}") - - tileset_path = tileset_path.replace("tsx", "ts") - elif child.tag == "layer": - layer = child - layer_id = int(layer.attrib["id"]) - layer_width = int(layer.attrib["width"]) - layer_height = int(layer.attrib["height"]) - - print(f"Layer: {layer_id}") - print(f"Width: {layer_width}") - print(f"Height: {layer_height}") - - assert (tileset_path) - output.write(to_char_array(tileset_path, MAX_PATH_LENGTH)) - - # Assume the layer's dimensions matches the map's. - assert (layer_width == map_width) - assert (layer_height == map_height) - - data = layer[0] - # Handle other encodings later. - assert (data.attrib["encoding"] == "csv") - - csv = data.text.strip() - rows = csv.split('\n') - for row in rows: - tile_ids = [x.strip() for x in row.split(',') if x] - for tile_id in tile_ids: - output.write(ctypes.c_uint16(int(tile_id))) - - -def get_num_cols(image, sprite_width): - """Return the number of non-empty columns in the image. - - Assumes no gaps in the columns. - """ - assert (image.width % sprite_width == 0) - num_cols = image.width // sprite_width - - # Start the search from right to left. - for col in reversed(range(1, num_cols)): - left = (col - 1) * sprite_width - right = col * sprite_width - rect = image.crop((left, 0, right, image.height)) - min_max = rect.getextrema() - for (channel_min, channel_max) in min_max: - if channel_min != 0 or channel_max != 0: - # 'col' is the rightmost non-empty column. - # Assuming no gaps, col+1 is the number of non-empty columns. - return col + 1 - - return 0 - - -def get_sprite_sheet_rows(im, sprite_width, sprite_height): - """Gets the individual rows of a sprite sheet. - - The input sprite sheet can have any number of rows. - - Returns a list of lists [[sprite]], one inner list for the columns in each - row. - """ - # Sprite sheet's width and height must be integer multiples of the - # sprite's width and height. - assert (im.width % sprite_width == 0) - assert (im.height % sprite_height == 0) - - num_rows = im.height // sprite_height - - rows = [] - for row in range(num_rows): - # Get the number of columns. - upper = row * sprite_height - lower = (row + 1) * sprite_height - whole_row = im.crop((0, upper, im.width, lower)) - num_cols = get_num_cols(whole_row, sprite_width) - assert (num_cols > 0) - - # Crop the row into N columns. - cols = [] - for i in range(num_cols): - left = i * sprite_width - right = (i + 1) * sprite_width - sprite = im.crop((left, upper, right, lower)) - cols.append(sprite) - - assert (len(cols) == num_cols) - rows.append(cols) - - return rows - - -def make_image_from_rows(rows, sprite_width, sprite_height): - """Concatenate the rows into a single RGBA image.""" - im_width = sprite_width * max(len(row) for row in rows) - im_height = len(rows) * sprite_height - im = Image.new('RGBA', (im_width, im_height)) - y = 0 - for row in rows: - x = 0 - for sprite in row: - im.paste(sprite.convert('RGBA'), (x, y)) - x += sprite_width - y += sprite_height - return im - - -def convert_sprite_sheet(input_file_paths, sprite_width, sprite_height, - output_filepath): - """Converts a set of sprite sheet images into a binary sprite sheet file - (.ss). - - The input sprite sheets can have any number of rows, one row per animation. - All rows from all sprite sheets are concatenated in the output file. - - The sprite's width and height is assumed constant throughout the input - sprite sheets. - """ - rows = [] - for input_filepath in input_file_paths: - with Image.open(input_filepath) as sprite_sheet: - rows.extend( - get_sprite_sheet_rows(sprite_sheet, sprite_width, - sprite_height)) - - im = make_image_from_rows(rows, sprite_width, sprite_height) - im = im.convert(mode="P", palette=Image.ADAPTIVE, colors=256) - - # The sprite data in 'rows' is no longer needed. - # Keep just the number of columns per row. - rows = [len(row) for row in rows] - - with open(output_filepath, 'bw') as output: - output.write(ctypes.c_uint16(sprite_width)) - output.write(ctypes.c_uint16(sprite_height)) - output.write(ctypes.c_uint16(len(rows))) - - # Write palette. - # getpalette() returns 256 colors, but the palette might use less than - # that. getcolors() returns the number of unique colors. - # getpalette() also returns a flattened list, which is why we must *4. - num_colours = len(im.getcolors()) - colours = im.getpalette(rawmode="RGBA")[:4 * num_colours] - palette = [] - for i in range(0, 4 * num_colours, 4): - palette.append((colours[i], colours[i + 1], colours[i + 2], - colours[i + 3])) - - output.write(ctypes.c_uint16(len(palette))) - output.write(bytearray(colours)) - - print(f"Sprite width: {sprite_width}") - print(f"Sprite height: {sprite_height}") - print(f"Rows: {len(rows)}") - print(f"Colours: {len(palette)}") - - # print("Palette") - # for i, colour in enumerate(palette): - # print(f"{i}: {colour}") - - for row, num_columns in enumerate(rows): - output.write(ctypes.c_uint16(num_columns)) - upper = row * sprite_height - lower = (row + 1) * sprite_height - for col in range(num_columns): - left = col * sprite_width - right = (col + 1) * sprite_width - sprite = im.crop((left, upper, right, lower)) - sprite_bytes = sprite.tobytes() - - assert (len(sprite_bytes) == sprite_width * sprite_height) - output.write(sprite_bytes) - - # if (row == 0) and (col == 0): - # print(f"Sprite: ({len(sprite_bytes)})") - # print(list(sprite_bytes)) - # sprite.save("out.png") - - -def main(): - parser = argparse.ArgumentParser() - parser.add_argument("input", - nargs="+", - help="Input file (.tsx, .tmx) or path regex (sprite sheets)") - parser.add_argument("--width", type=int, help="Sprite width in pixels") - parser.add_argument("--height", type=int, help="Sprite height in pixels") - parser.add_argument("--out", help="Output file (sprite sheets)") - args = parser.parse_args() - - if ".tsx" in args.input: - output_filepath_no_ext = drop_extension(args.input) - output_filepath = output_filepath_no_ext + ".ts" - convert_tsx(args.input, output_filepath) - elif ".tmx" in args.input: - output_filepath_no_ext = drop_extension(args.input) - output_filepath = output_filepath_no_ext + ".tm" - convert_tmx(args.input, output_filepath) - else: - # Sprite sheets. - if not args.width or not args.height: - print("Sprite width and height must be given") - return 1 - output_filepath = args.out if args.out else "out.ss" - convert_sprite_sheet(args.input, args.width, args.height, - output_filepath) - - return 0 - - -if __name__ == '__main__': - sys.exit(main()) -- cgit v1.2.3