53 lines
1.1 KiB
Python
53 lines
1.1 KiB
Python
#!/usr/bin/env python3
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import sys
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# Rango del checksum
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desp = 0x2000
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numBytes = 0x2000
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firstByte = desp + 0x200
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lastByte = desp + numBytes - 1
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checksum1 = desp + 0x270
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checksum2 = desp + 0x271
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# Bloque de armarios
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ARM_START = 0x02930
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ARM_END = 0x0293B
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# Armario que quieres dejar cerrado
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TARGET_BYTE = 0x02934
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TARGET_BIT = 0x80 # bit 7
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def calc_checksum(buffer):
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total = 0
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for i in range(firstByte, lastByte + 1):
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if i not in (checksum1, checksum2):
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total += buffer[i]
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total += 3328
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buffer[checksum1] = total % 256
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buffer[checksum2] = (total >> 8) % 256
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if len(sys.argv) != 3:
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print("Uso: python3 abrir_armarios.py save_in.srm save_out.srm")
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sys.exit(1)
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infile = sys.argv[1]
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outfile = sys.argv[2]
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with open(infile, "rb") as f:
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buf = bytearray(f.read())
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# Abrir todos los armarios
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for off in range(ARM_START, ARM_END + 1):
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buf[off] = 0xFF
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# Cerrar solo el armario objetivo
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buf[TARGET_BYTE] &= ~TARGET_BIT # FF sin el bit 7 → 7E
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# Recalcular checksum
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calc_checksum(buf)
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with open(outfile, "wb") as f:
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f.write(buf)
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print("Hecho:", outfile)
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