#!/usr/bin/env python3
import sys

if len(sys.argv) != 3:
    print("Uso: python3 diff_saves.py save_antes.srm save_despues.srm")
    sys.exit(1)

path_a = sys.argv[1]
path_b = sys.argv[2]

with open(path_a, "rb") as f:
    a = f.read()

with open(path_b, "rb") as f:
    b = f.read()

if len(a) != len(b):
    print(f"Los saves tienen tamaños distintos: {len(a)} vs {len(b)} bytes")
    sys.exit(1)

print(f"Comparando {len(a)} bytes...\n")

for i, (x, y) in enumerate(zip(a, b)):
    if x != y:
        print(f"Offset 0x{i:05X}: {x:02X} → {y:02X}")