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Fix LC1 games!

This commit is contained in:
Li 2023-04-30 22:13:23 +12:00
parent 6647b319a2
commit dd6707d5ef
2 changed files with 11 additions and 10 deletions
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3
GameBuilder/Pops/DiscCompressor.cs
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@ -146,8 +146,7 @@ namespace GameBuilder.Pops
private void writeLibCryptData()
{
// obfuscated libcrypt magic word
int obfuscatedMagicWord = obfuscateMagicWord();
isoHeaderUtil.WriteInt32(obfuscatedMagicWord);
isoHeaderUtil.WriteInt32(obfuscateMagicWord());
isoHeaderUtil.WriteInt32(0);
isoHeaderUtil.WriteInt32(0);
isoHeaderUtil.WriteInt32(0);

18
GameBuilder/Pops/LibCrypt/MagicWord.cs
View File

@ -30,20 +30,22 @@ namespace GameBuilder.Pops.LibCrypt
public static int GenMagicWord(SbiEntry[] Sbi)
{
bool[] bits = new bool[16];
int sbiI = 0;
if (Sbi.Length % 2 != 0) return 0;
HashSet<int> sbiSectors = new HashSet<int>();
foreach(SbiEntry sbiEntry in Sbi)
sbiSectors.Add(sbiEntry.Sector);
for (int i = 0; i < bits.Length; i++)
bits[i] = (sbiSectors.Contains(LIBCRYPT_PAIRS[i][0]) && sbiSectors.Contains(LIBCRYPT_PAIRS[i][1]));
int magicWord = 0;
for (int i = 0; i < bits.Length; i++)
{
bool isSet = (Sbi[sbiI].Sector == LIBCRYPT_PAIRS[i][0] && Sbi[sbiI + 1].Sector == LIBCRYPT_PAIRS[i][1]);
if (isSet) sbiI += 2;
bits[i] = isSet;
if (isSet) magicWord |= 1;
if (i + 1 < bits.Length)
if (bits[i]) magicWord |= 1;
if(i+1 < bits.Length)
magicWord <<= 1;
}