43 lines
1.2 KiB
Python
43 lines
1.2 KiB
Python
import hashlib
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import os
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import Utils
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from Patch import read_rom, APDeltaPatch
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SMJUHASH = '21f3e98df4780ee1c667b84e57d88675'
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ROM_PLAYER_LIMIT = 65535
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class SMDeltaPatch(APDeltaPatch):
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hash = SMJUHASH
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game = "Super Metroid"
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patch_file_ending = ".apsm"
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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 = getattr(get_base_rom_bytes, "base_rom_bytes", None)
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if not base_rom_bytes:
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file_name = get_base_rom_path(file_name)
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base_rom_bytes = bytes(read_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 SMJUHASH != basemd5.hexdigest():
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raise Exception('Supplied Base Rom does not match known MD5 for Japan+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 = Utils.get_options()
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if not file_name:
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file_name = options["sm_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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