devilutionX/defs.h

// some global definitions, found in debug release

#define DMAXX					40
#define DMAXY					40

#define LIGHTSIZE				6912 // 27 * 256
#define ROW_PITCH				768

// must be unsigned to generate unsigned comparisons with pnum
#define MAX_PLRS				4

#define MAX_CHARACTERS			10
#define MAX_LVLMTYPES			16
// #define MAX_PATH				260
#define MAX_SEND_STR_LEN		80
#define MAX_SPELLS				37

#define MAXDEAD					31
#define MAXDUNX					112
#define MAXDUNY					112
#define MAXITEMS				127
#define MAXBELTITEMS			8
#define MAXMISSILES				125
#define MAXMONSTERS				200
#define MAXMULTIQUESTS			4
#define MAXOBJECTS				127
#define MAXPORTAL				4
#define MAXQUESTS				16
#define MAXTHEMES				50
#define MAXTILES				2048
#define MAXTRIGGERS				5
#define MDMAXX					40
#define MDMAXY					40
#define MAXCHARLEVEL			51

// number of inventory grid cells
#define NUM_INV_GRID_ELEM		40
#define INV_SLOT_SIZE_PX		28

// Item indestructible durability
#define DUR_INDESTRUCTIBLE		255

#define VOLUME_MIN				-1600
#define VOLUME_MAX				0

// todo: enums
#define NUM_SFX					858
#define NUMLEVELS				17

// from diablo 2 beta
#define MAXEXP					2000000000

#define PLR_NAME_LEN			32

#define MAXPATHNODES			300

// 256 kilobytes + 3 bytes (demo leftover) for file magic (262147)
// final game uses 4-byte magic instead of 3
#define FILEBUFF				((256*1024)+3)

#define PMSG_COUNT				8

// Diablo Retail Version Game ID
#define GAME_ID					((int)'DRTL')

// Diablo uses a 256 color palette
// Entry 0-127 (0x00-0x7F) are level specific
// Entry 128-255 (0x80-0xFF) are global

// standard palette for all levels
// 8 or 16 shades per color
// example (dark blue): PAL16_BLUE+14, PAL8_BLUE+7
// example (light red): PAL16_RED+2, PAL8_RED
// example (orange): PAL16_ORANGE+8, PAL8_ORANGE+4
#define PAL8_BLUE		128
#define PAL8_RED		136
#define PAL8_YELLOW		144
#define PAL8_ORANGE		152
#define PAL16_BEIGE		160
#define PAL16_BLUE		176
#define PAL16_YELLOW	192
#define PAL16_ORANGE	208
#define PAL16_RED		224
#define PAL16_GRAY		240

#ifndef INVALID_FILE_ATTRIBUTES
#define INVALID_FILE_ATTRIBUTES ((DWORD)-1)
#endif

/////////////////////////////////////////////////////////////////////////
/* temporary stuff from the decompiler */
/* remove all the garbage below in the future */
/////////////////////////////////////////////////////////////////////////
#ifndef IDA_GARBAGE
#define IDA_GARBAGE

typedef __int64 int64;

// Partially defined types. They are used when the decompiler does not know
// anything about the type except its size.
#define _BYTE  unsigned char
#define _WORD  unsigned short
#define _DWORD unsigned int

// Some convenience macros to make partial accesses nicer
#define LAST_IND(x,part_type)    (sizeof(x)/sizeof(part_type) - 1)
#if defined(__BYTE_ORDER) && __BYTE_ORDER == __BIG_ENDIAN
#  define LOW_IND(x,part_type)   LAST_IND(x,part_type)
#  define HIGH_IND(x,part_type)  0
#else
#  define HIGH_IND(x,part_type)  LAST_IND(x,part_type)
#  define LOW_IND(x,part_type)   0
#endif

// first unsigned macros:
#define BYTEn(x, n)   (*((_BYTE*)&(x)+n))
#define WORDn(x, n)   (*((_WORD*)&(x)+n))
#define DWORDn(x, n)  (*((_DWORD*)&(x)+n))

#define _LOBYTE(x)  BYTEn(x,LOW_IND(x,_BYTE))
#define _LOWORD(x)  WORDn(x,LOW_IND(x,_WORD))
#define _HIBYTE(x)  BYTEn(x,HIGH_IND(x,_BYTE))
#define _HIWORD(x)  WORDn(x,HIGH_IND(x,_WORD))
#define HIDWORD(x) DWORDn(x,HIGH_IND(x,_DWORD))
#define BYTE1(x)   BYTEn(x,  1)         // byte 1 (counting from 0)
#define BYTE2(x)   BYTEn(x,  2)


// now signed macros (the same but with sign extension)
#define SBYTEn(x, n)   (*((char*)&(x)+n))
#define SWORDn(x, n)   (*((short*)&(x)+n))

#define SLOBYTE(x)  SBYTEn(x,LOW_IND(x,char))
#define SHIWORD(x)  SWORDn(x,HIGH_IND(x,short))


// Helper functions to represent some assembly instructions.

#ifdef __cplusplus

#ifdef FAST_MEMCPY
#define qmemcpy memcpy
#else
inline void *qmemcpy(void *dst, const void *src, size_t cnt)
{
	char *out      = (char *)dst;
	const char *in = (const char *)src;
	while (cnt > 0) {
		*out++ = *in++;
		--cnt;
	}
	return dst;
}
#endif

// rotate left
template <class T>
T __ROL__(T value, int count)
{
	const unsigned int nbits = sizeof(T) * 8;

	if (count > 0) {
		count %= nbits;
		T high = value >> (nbits - count);
		if (T(-1) < 0) // signed value
			high &= ~((T(-1) << count));
		value <<= count;
		value |= high;
	} else {
		count = -count % nbits;
		T low = value << (nbits - count);
		value >>= count;
		value |= low;
	}
	return value;
}

inline unsigned short __ROR2__(unsigned short value, int count) { return __ROL__((unsigned short)value, -count); }
inline unsigned int __ROR4__(unsigned int value, int count) { return __ROL__((unsigned int)value, -count); }

// sign flag
template <class T>
char __SETS__(T x)
{
	if (sizeof(T) == 1)
		return char(x) < 0;
	if (sizeof(T) == 2)
		return short(x) < 0;
	if (sizeof(T) == 4)
		return int(x) < 0;
	return int64(x) < 0;
}

// overflow flag of subtraction (x-y)
template <class T, class U>
char __OFSUB__(T x, U y)
{
	if (sizeof(T) < sizeof(U)) {
		U x2    = x;
		char sx = __SETS__(x2);
		return (sx ^ __SETS__(y)) & (sx ^ __SETS__(x2 - y));
	} else {
		T y2    = y;
		char sx = __SETS__(x);
		return (sx ^ __SETS__(y2)) & (sx ^ __SETS__(x - y2));
	}
}

#endif

#endif /* IDA_GARBAGE */

#ifndef INFINITY
#ifdef __cplusplus
#include <limits>
#define INFINITY std::numeric_limits<float>::infinity()
#else
typedef union {
   unsigned int u;
   float f;
} inf;
static inf float_init = {0x7F800000};
#define INFINITY float_init.f
#endif
#endif