44 lines
1.3 KiB
Python
44 lines
1.3 KiB
Python
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import hashlib
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import os
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from typing import Optional
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import Utils
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from Utils import OptionsType
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from worlds.Files import APDeltaPatch
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L2USHASH: str = "6efc477d6203ed2b3b9133c1cd9e9c5d"
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class L2ACDeltaPatch(APDeltaPatch):
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hash = L2USHASH
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game = "Lufia II Ancient Cave"
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patch_file_ending = ".apl2ac"
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@classmethod
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def get_source_data(cls) -> bytes:
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return get_base_rom_bytes()
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def get_base_rom_bytes(file_name: str = "") -> bytes:
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base_rom_bytes: Optional[bytes] = getattr(get_base_rom_bytes, "base_rom_bytes", None)
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if not base_rom_bytes:
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file_name: str = get_base_rom_path(file_name)
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base_rom_bytes = bytes(Utils.read_snes_rom(open(file_name, "rb")))
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basemd5 = hashlib.md5()
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basemd5.update(base_rom_bytes)
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if L2USHASH != basemd5.hexdigest():
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raise Exception("Supplied Base Rom does not match known MD5 for US release. "
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"Get the correct game and version, then dump it")
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get_base_rom_bytes.base_rom_bytes = base_rom_bytes
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return base_rom_bytes
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def get_base_rom_path(file_name: str = "") -> str:
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options: OptionsType = Utils.get_options()
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if not file_name:
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file_name = options["lufia2ac_options"]["rom_file"]
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if not os.path.exists(file_name):
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file_name = Utils.user_path(file_name)
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return file_name
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