//thanks Rick
int DNF_ReadEncodedMem(RichMemFileBase *f)
{
	BYTE op;
	f->Read(&op, sizeof(BYTE));

	DWORD value = (op & 0x3F);

	if ((op & 0x40) != 0)
	{
		int shift = 6;
		BYTE extra;
		do
		{
			if (shift > 27)
			{
				return -1;
			}

			f->Read(&extra, sizeof(BYTE));
			value |= (DWORD)(extra & 0x7F) << shift;
			shift += 7;
		}
		while ((extra & 0x80) != 0);
	}

	if ((op & 0x80) != 0)
	{
		return -(int)value;
	}

	return (int)value;
}