Make isogfx a library instead of an executable.

1 files changed, 0 insertions, 324 deletions

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())