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#!/usr/bin/env python3
from argparse import ArgumentParser
import subprocess
import os
import json
__version__ = "1.0"
ld = os.environ.get("LD", "i586-pc-msdosdjgpp-ld")
strip = os.environ.get("STRIP", "i586-pc-msdosdjgpp-strip")
def get_layer(data, name):
for layer in data["layers"]:
if layer["name"] == name:
return layer
raise ValueError("Layer %s not found" % name)
def main():
parser = ArgumentParser(
description="Tiled JSON Map to .o",
epilog="Copyright (C) 2023 Juan J Martinez <jjm@usebox.net>",
)
parser.add_argument(
"--version", action="version", version="%(prog)s " + __version__
)
parser.add_argument("file_json", help="JSON map to convert")
parser.add_argument("output", help="object name for the map data")
args = parser.parse_args()
with open(args.file_json, "rt") as fd:
data = json.load(fd)
if len(data["tilesets"]) != 1:
parser.error("Unsupported number of tilesets %d" % len(data["tilesets"]))
tileset = data["tilesets"][0]
map_layer = get_layer(data, "Map")
out = list(map(lambda x: (x - tileset["firstgid"]) & 0xFF, map_layer["data"]))
gold_layer = get_layer(data, "Gold")
out.extend(map(lambda x: (x - tileset["firstgid"]) & 0xFF, gold_layer["data"]))
# TODO: process map entities
tmp = args.output.rstrip(".o")
with open(tmp, "wb") as fd:
fd.write(bytearray(out))
fd.flush()
# create an object file from the binary
rc = subprocess.call(
[
ld,
"-r",
"-b",
"binary",
"-o",
args.output,
tmp,
]
)
os.unlink(tmp)
if rc != 0:
parser.error("Failed to run %s" % ld)
# strip unwanted symbols
rc = subprocess.call([strip, "-w", "-K", "*_%s_*" % tmp, args.output])
if rc != 0:
parser.error("Failed to run %s" % ld)
if __name__ == "__main__":
main()
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