public static unsafe Version getBTD6Version(string btd6Dir)
{
// GlobalGameManagers contains version string.
// Can move by a few bytes in updates, instead scan for it.
Version v;
byte[] file = File.ReadAllBytes(btd6Dir + "\\BloonsTD6_Data\\globalgamemanagers");
Int64 VersionStructOffset = 0;
fixed(byte *pFile = file)
{
// The signature is only a few bytes away, the next period should always be the peroid in the version (12.2)
VersionStructOffset = MemoryUtils.AOBScan(pFile, file.Length, BTD6VerisonInfoSignature);
if (VersionStructOffset == 0)
{
throw new Exception("Error, failed to find BTD6's version");
}
// Now we scan for the peroid (12.2) the .
for (Int64 i = VersionStructOffset + BTD6VerisonInfoSignature.Length; i < file.Length; i++)
{
if (pFile[i] == 0x2E)
{
byte[] versionBytes = MemoryUtils.BytesBetweenNull(pFile, file.Length, i);
int periodPos = 0;
for (int k = 0; k < versionBytes.Length; k++)
{
if (versionBytes[k] == 0x2e)
{
periodPos = k;
break;
}
}
byte[] majorVersionBytes = new byte[periodPos];
byte[] minorVersionBytes = new byte[versionBytes.Length - (periodPos + 1)];
Buffer.BlockCopy(versionBytes, 0, majorVersionBytes, 0, periodPos);
Buffer.BlockCopy(versionBytes, periodPos + 1, minorVersionBytes, 0, versionBytes.Length - (periodPos + 1));
string majorVersionString = Encoding.UTF8.GetString(majorVersionBytes);
string minorVersionString = Encoding.UTF8.GetString(minorVersionBytes);
v = new Version(int.Parse(majorVersionString), int.Parse(minorVersionString));
return(v);
}
}
}
throw new Exception("Error, unable to get BTD6 Version");
}