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https://github.com/pmret/papermario.git
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75 lines
2.5 KiB
Python
Executable File
75 lines
2.5 KiB
Python
Executable File
#! /usr/bin/python3
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import os
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from sys import argv
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from pathlib import Path
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from itertools import tee
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def next_multiple(pos, multiple):
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return pos + pos % multiple
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def build_mapfs(out_bin, assets):
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# every TOC entry's name field has data after the null terminator made up from all the previous name fields.
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# we probably don't have to do this for the game to read the data properly (it doesn't read past the null terminator
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# of `string`), but the original devs' equivalent of this script had this bug so we need to replicate it to match.
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written_names = []
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with open(out_bin, "wb") as f:
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f.write("Map Ver.00/11/07 15:36".encode("ascii"))
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next_data_pos = (len(assets) + 1) * 0x1C
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asset_idx = 0
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for decompressed, compressed in assets:
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toc_entry_pos = 0x20 + asset_idx * 0x1C
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# data for TOC entry
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name = decompressed.stem + "\0"
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offset = next_data_pos
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decompressed_size = decompressed.stat().st_size
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size = next_multiple(compressed.stat().st_size, 2) if compressed.exists() else decompressed_size
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#print(f"{name} {offset:08X} {size:08X} {decompressed_size:08X}")
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written_names.append(name)
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# write all previously-written names; required to match
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for prev_name in written_names:
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f.seek(toc_entry_pos)
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f.write(prev_name.encode('ascii'))
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# write TOC entry.
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f.seek(toc_entry_pos + 0x10)
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f.write(offset.to_bytes(4, byteorder="big"))
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f.write(size.to_bytes(4, byteorder="big"))
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f.write(decompressed_size.to_bytes(4, byteorder="big"))
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# write data.
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f.seek(0x20 + next_data_pos)
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f.write(compressed.read_bytes() if compressed.exists() else decompressed.read_bytes())
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next_data_pos += size
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asset_idx += 1
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# end_data
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toc_entry_pos = 0x20 + asset_idx * 0x1C
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written_names.append("end_data\0")
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for prev_name in written_names:
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f.seek(toc_entry_pos)
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f.write(prev_name.encode('ascii'))
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f.seek(toc_entry_pos + 0x18)
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f.write((0x903F0000).to_bytes(4, byteorder="big")) # TODO: figure out purpose
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if __name__ == "__main__":
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argv.pop(0) # python3
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out = argv.pop(0)
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assets = []
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# pairs
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for i in range(0, len(argv), 2):
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assets.append((Path(argv[i]), Path(argv[i+1])))
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build_mapfs(out, assets)
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