Initial import1.0

1 files changed, 138 insertions, 0 deletions

diff --git a/tools/png2sprites.py b/tools/png2sprites.py
new file mode 100755
index 0000000..a554433
--- /dev/null
+++ b/tools/png2sprites.py
@@ -0,0 +1,138 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2019 by Juan J. Martinez <jjm@usebox.net>
+#
+# 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.
+#
+
+from argparse import ArgumentParser
+from PIL import Image
+
+__version__ = "1.0"
+
+DEF_W = 16
+DEF_H = 16
+
+TRANS = (28, 28, 28)
+
+
+def to_hex_list_str(src):
+    out = ""
+    for i in range(0, len(src), 8):
+        out += ', '.join(["0x%02x" % b for b in src[i:i + 8]]) + ',\n'
+    return out
+
+
+def to_hex_list_str_asm(src):
+    out = ""
+    for i in range(0, len(src), 8):
+        out += '\tdb ' + ', '.join(["#%02x" % b for b in src[i:i + 8]])
+        out += '\n'
+    return out
+
+
+def main():
+
+    parser = ArgumentParser(description="PNG to MSX spites",
+                            epilog="Copyright (C) 2019 Juan J Martinez <jjm@usebox.net>",
+                            )
+
+    parser.add_argument(
+        "--version", action="version", version="%(prog)s " + __version__)
+    parser.add_argument("-i", "--id", dest="id", default="sprites", type=str,
+                        help="variable name (default: sprites)")
+    parser.add_argument("-a", "--asm", dest="asm", action="store_true",
+                        help="ASM output (default: C header)")
+
+    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 % DEF_W or h % DEF_H:
+        parser.error("%s size is not multiple of sprite size (%s, %s)" %
+                     (args.image, DEF_W, DEF_H))
+
+    data = image.getdata()
+
+    out = []
+    for y in range(0, h, DEF_H):
+        for x in range(0, w, DEF_W):
+            tile = [data[x + i + ((y + j) * w)]
+                    for j in range(DEF_H) for i in range(DEF_W)]
+            cols = set([c for c in tile if c != TRANS])
+
+            if not cols:
+                continue
+
+            for c in cols:
+                frame = []
+                for i, j in ((0, 0), (0, 8), (8, 0), (8, 8)):
+                    for m in range(8):
+                        byte = 0
+                        p = 7
+                        for k in range(8):
+                            b = 1 if tile[i + (j + m) * 16 + k] == c else 0
+                            byte |= b << p
+                            p -= 1
+                        frame.append(byte)
+                out.append(frame)
+
+    if args.asm:
+        print("%s_LEN = %d" % (args.id.upper(), len(out) * 32))
+        print("%s_FRAMES = %d\n" % (args.id.upper(), len(out)))
+        print("%s:\n" % args.id)
+
+        for i, frame in enumerate(out):
+            print("%s_frame%d:" % (args.id, i))
+            print(to_hex_list_str_asm(frame))
+    else:
+        print("#ifndef _%s_H" % args.id.upper())
+        print("#define _%s_H\n" % args.id.upper())
+        print("#define %s_LEN %d\n" % (args.id.upper(), len(out) * 32))
+        print("#define %s_FRAMES %d\n" % (args.id.upper(), len(out)))
+
+        data_out = ""
+        for i, frame in enumerate(out):
+            data_out += '{\n' + to_hex_list_str(frame) + '}'
+            if i + 1 < len(out):
+                data_out += ',\n'
+
+        print("#ifdef LOCAL")
+        print("const unsigned char %s[%d][%d] = {\n%s\n};\n" % (
+            args.id, len(out), len(out[0]), data_out))
+
+        print("#else\n")
+        print("extern const unsigned char %s[%d][%d];" %
+              (args.id, len(out), len(out[0])))
+        print("#endif // LOCAL\n")
+        print("#endif // _%s_H\n" % args.id.upper())
+
+
+if __name__ == "__main__":
+    main()