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#! /usr/bin/env python3
# Copyright (c) 2015 Sanderd17
#
# Licensed under the MIT License:
#
# 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.
import argparse
import os
import struct
import sys
parser = argparse.ArgumentParser(
description="Convert maps compatible with 0 A.D. version Alpha XVIII (A18) to maps compatible "
"with version Alpha XIX (A19), or the other way around."
)
parser.add_argument(
"--reverse",
action="store_true",
help="Make an A19 map compatible with A18 (note that conversion will fail "
"if mountains are too high)",
)
parser.add_argument(
"--no-version-bump", action="store_true", help="Don't change the version number of the map"
)
parser.add_argument(
"--no-color-spelling",
action="store_true",
help="Don't change the spelling of color and colour",
)
parser.add_argument("--no-height-change", action="store_true", help="Don't change the heightmap")
parser.add_argument(
"files", nargs="+", help="XML file to process (use wildcards '*' to select multiple files)"
)
args = parser.parse_args()
HEIGHTMAP_BIT_SHIFT = 3
for xml_file in args.files:
pmp_file = xml_file[:-3] + "pmp"
print("Processing " + xml_file + " ...")
if os.path.isfile(pmp_file):
with open(pmp_file, "rb") as f1, open(pmp_file + "~", "wb") as f2:
# 4 bytes PSMP to start the file
f2.write(f1.read(4))
# 4 bytes to encode the version of the file format
version = struct.unpack("<I", f1.read(4))[0]
if args.no_version_bump:
f2.write(struct.pack("<I", version))
elif args.reverse:
if version != 6:
print(
f"Warning: File {pmp_file} was not at version 6, while a negative version "
f"bump was requested.\nABORTING ..."
)
continue
f2.write(struct.pack("<I", version - 1))
else:
if version != 5:
print(
f"Warning: File {pmp_file} was not at version 5, while a version bump was "
f"requested.\nABORTING ..."
)
continue
f2.write(struct.pack("<I", version + 1))
# 4 bytes a for file size (which shouldn't change)
f2.write(f1.read(4))
# 4 bytes to encode the map size
map_size = struct.unpack("<I", f1.read(4))[0]
f2.write(struct.pack("<I", map_size))
# half all heights using the shift '>>' operator
if args.no_height_change:
def height_transform(h):
return h
elif args.reverse:
def height_transform(h):
return h << HEIGHTMAP_BIT_SHIFT
else:
def height_transform(h):
return h >> HEIGHTMAP_BIT_SHIFT
for _i in range((map_size * 16 + 1) * (map_size * 16 + 1)):
height = struct.unpack("<H", f1.read(2))[0]
f2.write(struct.pack("<H", height_transform(height)))
# copy the rest of the file
byte = f1.read(1)
while byte != b"":
f2.write(byte)
byte = f1.read(1)
f2.close()
f1.close()
# replace the old file, comment to see both files
os.remove(pmp_file)
os.rename(pmp_file + "~", pmp_file)
if os.path.isfile(xml_file):
with (
open(xml_file, encoding="utf-8") as f1,
open(xml_file + "~", "w", encoding="utf-8") as f2,
):
data = f1.read()
# bump version number (rely on how Atlas formats the XML)
if not args.no_version_bump:
if args.reverse:
if data.find('<Scenario version="6">') == -1:
print(
f"Warning: File {xml_file} was not at version 6, while a negative "
f"version bump was requested.\nABORTING ..."
)
sys.exit()
else:
data = data.replace('<Scenario version="6">', '<Scenario version="5">')
elif data.find('<Scenario version="5">') == -1:
print(
f"Warning: File {xml_file} was not at version 5, while a version bump "
f"was requested.\nABORTING ..."
)
sys.exit()
else:
data = data.replace('<Scenario version="5">', '<Scenario version="6">')
# transform the color keys
if not args.no_color_spelling:
if args.reverse:
data = data.replace("color", "colour").replace("Color", "Colour")
else:
data = data.replace("colour", "color").replace("Colour", "Color")
f2.write(data)
f1.close()
f2.close()
# replace the old file, comment to see both files
os.remove(xml_file)
os.rename(xml_file + "~", xml_file)
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