91 lines
2.8 KiB
Python
91 lines
2.8 KiB
Python
import hashlib
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import os
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import Utils
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from Utils import read_snes_rom
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from worlds.Files import APDeltaPatch
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SMJUHASH = '21f3e98df4780ee1c667b84e57d88675'
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LTTPJPN10HASH = '03a63945398191337e896e5771f77173'
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ROM_PLAYER_LIMIT = 256
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class SMZ3DeltaPatch(APDeltaPatch):
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hash = "3a177ba9879e3dd04fb623a219d175b2"
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game = "SMZ3"
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patch_file_ending = ".apsmz3"
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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() -> 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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sm_file_name = get_sm_base_rom_path()
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sm_base_rom_bytes = bytes(read_snes_rom(open(sm_file_name, "rb")))
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basemd5 = hashlib.md5()
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basemd5.update(sm_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 SM Japan+US release. '
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'Get the correct game and version, then dump it')
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lttp_file_name = get_lttp_base_rom_path()
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lttp_base_rom_bytes = bytes(read_snes_rom(open(lttp_file_name, "rb")))
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basemd5 = hashlib.md5()
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basemd5.update(lttp_base_rom_bytes)
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if LTTPJPN10HASH != basemd5.hexdigest():
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raise Exception('Supplied Base Rom does not match known MD5 for LttP Japan(1.0) 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 = bytes(combine_smz3_rom(sm_base_rom_bytes, lttp_base_rom_bytes))
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return get_base_rom_bytes.base_rom_bytes
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def get_sm_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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def get_lttp_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["lttp_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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def combine_smz3_rom(sm_rom: bytes, lttp_rom: bytes) -> bytearray:
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combined = bytearray(0x600000)
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# SM hi bank
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pos = 0
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srcpos = 0
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for i in range(0x40):
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combined[pos + 0x8000:pos + 0x8000 + 0x8000] = sm_rom[srcpos:srcpos + 0x8000]
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srcpos += 0x8000
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pos += 0x10000
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# SM lo bank
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pos = 0
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for i in range(0x20):
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combined[pos:pos + 0x8000] = sm_rom[srcpos:srcpos + 0x8000]
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srcpos += 0x8000
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pos += 0x10000
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# Z3 hi bank
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pos = 0x400000
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srcpos = 0
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for i in range(0x20):
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combined[pos + 0x8000:pos + 0x8000 + 0x8000] = lttp_rom[srcpos:srcpos + 0x8000]
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srcpos += 0x8000
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pos += 0x10000
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return combined
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