LGram16
dd97ddec92
Move git root from Client/ to src/ to track all source code: - Client: Game client source (moved to Client/Client/) - Server: Game server source - GameTools: Development tools - CryptoSource: Encryption utilities - database: Database scripts - Script: Game scripts - rylCoder_16.02.2008_src: Legacy coder tools - GMFont, Game: Additional resources 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude <noreply@anthropic.com>
138 lines
4.7 KiB
C++
138 lines
4.7 KiB
C++
// FastMath.h: interface for the CFastMath class.
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//
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//////////////////////////////////////////////////////////////////////
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#if !defined(AFX_FASTMATH_H__ED69578B_18C1_42EA_9C5E_888DC38101C2__INCLUDED_)
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#define AFX_FASTMATH_H__ED69578B_18C1_42EA_9C5E_888DC38101C2__INCLUDED_
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#if _MSC_VER > 1000
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#pragma once
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#endif // _MSC_VER > 1000
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#include <d3d8.h>
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#include "MathBase.h"
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#define FP_BITS(fp) (*(DWORD *)&(fp))
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class CFastMath
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{
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typedef union FastSqrtUnion {
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float f;
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unsigned int i;
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} FastSqrtUnion;
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static unsigned int m_FastSqrtTable[0x10000];
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static unsigned short m_FastHeToBi[0x100];
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static long m_HoldRand;
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public:
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// constructor and destructor
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CFastMath();
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virtual ~CFastMath();
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static void Init();
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inline static float FastSqrt(float n) // 빠른 제곱근 연산을 하는 함수.
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{
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if (FP_BITS(n) == 0)
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return 0.0f; // check for square root of 0
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FP_BITS(n) = m_FastSqrtTable[(FP_BITS(n) >> 8) & 0xFFFF] | ((((FP_BITS(n) - 0x3F800000) >> 1) + 0x3F800000) & 0x7F800000);
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return n;
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};
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///////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// converts ascii type of IPX address to hexadecimal format
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// returns the equivalent binary value for an individual character specified in the ascii format
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static UCHAR BiToHe(char cBin); // SPX, IPX 주소 계산을 위해 사용하는 함수
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static void AcToHe(char *szDst, char *szSrc, int iCount); // SPX, IPX 주소 계산을 위해 사용하는 함수
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static char StrToHex08(char *szSrc); // convert string to hexa
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static unsigned short StrToHex16(char *szSrc); // convert string to hexa
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static DWORD StrToHex32(char *szSrc); // convert string to hexa
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static _int64 StrToHex64(char *szSrc); // convert string to hexa
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static inline void Hex08ToStr(char *szDest, BYTE hex); // convert hexa to string
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static inline void Hex16ToStr(char *szDest, WORD hex); // convert hexa to string
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static inline void Hex32ToStr(char *szDest, DWORD hex); // convert hexa to string
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static inline void Hex64ToStr(char *szDest, DWORD64 hex); // convert hexa to string
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static char Atoc(char *szSrc); // ascii to U8
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static unsigned short Atos(char *szSrc); // ascii to U16
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static unsigned int Atoi(char *szSrc); // ascii to U32
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static _int64 Atol64(char *szSrc); // ascii to U64
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static void SRand( unsigned int seed );
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static int Rand( void );
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// 리턴값은 0 ~ nExtent - 1의 범위를 갖는다.
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static DWORD ComplexRandom(int nExtent);
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static DWORD AGLRandom(int nExtent) { return ComplexRandom(nExtent); };
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};
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inline void CFastMath::Hex08ToStr( char *szDest, BYTE hex )
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{
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*((WORD *) szDest) = m_FastHeToBi[ hex ]; szDest += 2;
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*(szDest) = '\0';
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}
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inline void CFastMath::Hex16ToStr( char *szDest, WORD hex )
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{
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LPBYTE pSrc = (LPBYTE) &hex;
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#ifdef BIG_ENDIAN
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*((WORD *) (szDest + 0)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 2)) = m_FastHeToBi[ *(pSrc++) ];
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#else
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*((WORD *) (szDest + 2)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 0)) = m_FastHeToBi[ *(pSrc++) ];
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#endif
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*(szDest + 4) = '\0';
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}
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inline void CFastMath::Hex32ToStr( char *szDest, DWORD hex )
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{
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LPBYTE pSrc = (LPBYTE) &hex;
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#ifdef BIG_ENDIAN
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*((WORD *) (szDest + 0)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 2)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 4)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 6)) = m_FastHeToBi[ *(pSrc++) ];
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#else
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*((WORD *) (szDest + 6)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 4)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 2)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 0)) = m_FastHeToBi[ *(pSrc++) ];
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#endif
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*(szDest + 8) = '\0';
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}
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inline void CFastMath::Hex64ToStr( char *szDest, DWORD64 hex )
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{
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LPBYTE pSrc = (LPBYTE) &hex;
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#ifdef BIG_ENDIAN
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*((WORD *) (szDest + 0)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 2)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 4)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 6)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 8)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 10)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 12)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 14)) = m_FastHeToBi[ *(pSrc++) ];
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#else
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*((WORD *) (szDest + 14)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 12)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 10)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 8)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 6)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 4)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 2)) = m_FastHeToBi[ *(pSrc++) ];
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*((WORD *) (szDest + 0)) = m_FastHeToBi[ *(pSrc++) ];
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#endif
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*(szDest + 16) = '\0';
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}
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#endif // !defined(AFX_FASTMATH_H__ED69578B_18C1_42EA_9C5E_888DC38101C2__INCLUDED_)
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