C++代码求翻译，着实看不懂！

bobo123 · 发表于 2021-4-17 22:02:52

#define ENCODE_MAGICATTACK(idUser,usType,idTarget,usPosX,usPosY) { \
usType = (::ExchangeShortBits((usType - 0x14BE),3) ^ (idUser) ^ 0x915D); \
idTarget = ::ExchangeLongBits(((idTarget - 0x8B90B51A) ^ (idUser) ^ 0x5F2D2463),32-13); \
usPosX = (::ExchangeShortBits((usPosX - 0xDD12),1) ^ (idUser) ^ 0x2ED6); \
usPosY = (::ExchangeShortBits((usPosY - 0x76DE),5) ^ (idUser) ^ 0xB99B); }

#define DECODE_MAGICATTACK(idUser,usType,idTarget,usPosX,usPosY) { \
usType = 0xFFFF&(::ExchangeShortBits(((usType) ^ (idUser) ^ 0x915D),16-3) + 0x14BE); \
idTarget = (::ExchangeLongBits((idTarget),13) ^ (idUser) ^ 0x5F2D2463) + 0x8B90B51A; \
usPosX = 0xFFFF&(::ExchangeShortBits(((usPosX) ^ (idUser) ^ 0x2ED6),16-1) + 0xDD12); \
usPosY = 0xFFFF&(::ExchangeShortBits(((usPosY) ^ (idUser) ^ 0xB99B),16-5) + 0x76DE); }

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

inline unsigned int ExchangeShortBits(unsigned long nData, int nBits)
{
ASSERT(nBits >= 0 && nBits < 16);
nData &= 0xFFFF;
return ((nData >> nBits) | (nData << (16 - nBits))) & 0xFFFF;
}

inline unsigned int ExchangeLongBits(unsigned long nData, int nBits)
{
ASSERT(nBits >= 0 && nBits < 32);
return (nData >> nBits) | (nData << (32 - nBits));
}