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Location: cpp/openttd-patchpack/source/macros.h
r1099:88d33d74ab88
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 | #ifndef MACROS_H
#define MACROS_H
#include "map.h"
#define MAX_INT 0x7FFFFFFF
#ifdef min
#undef min
#endif
#ifdef max
#undef max
#endif
static inline int min(int a, int b) { if (a <= b) return a; return b; }
static inline int max(int a, int b) { if (a >= b) return a; return b; }
static inline int64 max64(int64 a, int64 b) { if (a >= b) return a; return b; }
static inline uint minu(uint a, uint b) { if (a <= b) return a; return b; }
static inline uint maxu(uint a, uint b) { if (a >= b) return a; return b; }
static inline int clamp(int a, int min, int max) { if (a <= min) return min; if (a >= max) return max; return a; }
static inline int clamp2(int a, int min, int max) { if (a <= min) a=min; if (a >= max) a=max; return a; }
static inline bool int32_add_overflow(int32 a, int32 b) { return (int32)(a^b)>=0 && (int32)(a^(a+b))<0; }
static inline bool int32_sub_overflow(int32 a, int32 b) { return (int32)(a^b)<0 && (int32)(a^(a-b))<0; }
static inline bool str_eq(const byte *a, const byte *b)
{
int i=0;
while (a[i] == b[i]) {
if (a[i] == 0)
return true;
i++;
}
return false;
}
// Will crash if strings are equal
static inline bool str_is_below(byte *a, byte *b) {
while (*a <= *b) {
if (*a < *b) return true;
a++;
b++;
}
return false;
}
static inline int32 BIGMULSS(int32 a, int32 b, int shift) {
return (int32)(((int64)(a) * (int64)(b)) >> (shift));
}
static inline int64 BIGMULSS64(int64 a, int64 b, int shift) {
return ((a) * (b)) >> (shift);
}
static inline uint32 BIGMULUS(uint32 a, uint32 b, int shift) {
return (uint32)(((uint64)(a) * (uint64)(b)) >> (shift));
}
static inline int64 BIGMULS(int32 a, int32 b) {
return (int32)(((int64)(a) * (int64)(b)));
}
/* OPT: optimized into an unsigned comparison */
//#define IS_INSIDE_1D(x, base, size) ((x) >= (base) && (x) < (base) + (size))
#define IS_INSIDE_1D(x, base, size) ( (uint)((x) - (base)) < ((uint)(size)) )
#define LANDSCAPE_SIZE_FACTOR 1
enum {
CORRECT_Z_BITS = 1 << 1 | 1 << 2 | 1 << 3 | 1 << 4 | 1 << 5 | 1 << 6 | 1 << 7
};
#define CORRECT_Z(tileh) (CORRECT_Z_BITS & (1 << tileh))
#define TILE_ASSERT(x) assert( TILE_MASK(x) == (x) );
//#define REMADP_COORDS(x,y,z) { int t = x; x = (y-t)*2; y+=t-z; }
#define PACK_POINT(x,y) ((x) | ((y) << 16))
#define UNPACK_POINT_X(p) ((uint16)(p))
#define UNPACK_POINT_Y(p) ((uint16)(p>>16))
#define PACK_PPOINT(p) PACK_POINT((p).x, (p).y)
#define HASBIT(x,y) ((x) & (1 << (y)))
#define SETBIT(x,y) ((x) |= (1 << (y)))
#define CLRBIT(x,y) ((x) &= ~(1 << (y)))
#define TOGGLEBIT(x,y) ((x) ^= (1 << (y)))
// checking more bits. Maybe unneccessary, but easy to use
#define HASBITS(x,y) ((x) & (y))
#define SETBITS(x,y) ((x) |= (y))
#define CLRBITS(x,y) ((x) &= ~(y))
#define PLAYER_SPRITE_COLOR(owner) ((_player_colors[owner] << 16) + 0x3070000)
#define SPRITE_PALETTE(x) ((x) + 0x8000)
extern const byte _ffb_64[128];
/* Returns the position of the first bit that is not zero, counted from the
* left. Ie, 10110100 returns 2, 00000001 returns 0, etc. When x == 0 returns
* 0.
*/
#define FIND_FIRST_BIT(x) _ffb_64[(x)]
/* Returns x with the first bit that is not zero, counted from the left, set
* to zero. So, 10110100 returns 10110000, 00000001 returns 00000000, etc.
*/
#define KILL_FIRST_BIT(x) _ffb_64[(x)+64]
static inline int FindFirstBit2x64(int value)
{
int i = 0;
if ( (byte) value == 0) {
i += 8;
value >>= 8;
}
return i + FIND_FIRST_BIT(value & 0x3F);
}
/* [min,max), strictly less than */
#define IS_BYTE_INSIDE(a,min,max) ((byte)((a)-(min)) < (byte)((max)-(min)))
#define IS_INT_INSIDE(a,min,max) ((uint)((a)-(min)) < (uint)((max)-(min)))
#define CHANCE16(a,b) ((uint16)Random() <= (uint16)((65536 * a) / b))
#define CHANCE16R(a,b,r) ((uint16)(r=Random()) <= (uint16)((65536 * a) / b))
#define CHANCE16I(a,b,v) ((uint16)(v) <= (uint16)((65536 * a) / b))
#define BEGIN_TILE_LOOP(var,w,h,tile) \
{int h_cur = h; \
uint var = tile; \
do { \
int w_cur = w; \
do {
#define END_TILE_LOOP(var,w,h,tile) \
} while (++var, --w_cur != 0); \
} while (var += TILE_XY(0,1) - (w), --h_cur != 0);}
#define for_each_bit(_i,_b) \
for(_i=0; _b!=0; _i++,_b>>=1) \
if (_b&1)
#define assert_array(i,j) assert(i < lengthof(j))
#define abs myabs
static inline int intxchg_(int *a, int b) { int t = *a; *a = b; return t; }
#define intxchg(a,b) intxchg_(&(a), (b))
#define intswap(a,b) ((b) = intxchg_(&(a), (b)))
static inline int myabs(int a) { if (a<0) a = -a; return a; }
static inline int64 myabs64(int64 a) { if (a<0) a = -a; return a; }
static inline void swap_byte(byte *a, byte *b) { byte t = *a; *a = *b; *b = t; }
static inline void swap_uint16(uint16 *a, uint16 *b) { uint16 t = *a; *a = *b; *b = t; }
static inline void swap_int16(int16 *a, int16 *b) { int16 t = *a; *a = *b; *b = t; }
static inline void swap_tile(TileIndex *a, TileIndex *b) { TileIndex t = *a; *a = *b; *b = t; }
#if defined(TTD_LITTLE_ENDIAN)
# define READ_LE_UINT16(b) (*(const uint16*)(b))
# define ADD_WORD(x) (x)&0xFF, ((x) >> 8)&0xFF
# define ADD_DWORD(x) (x)&0xFF, ((x) >> 8)&0xFF, ((x) >> 16)&0xFF, ((x) >> 24)&0xFF
#elif defined(TTD_BIG_ENDIAN)
static inline uint16 READ_LE_UINT16(const void *b) {
return ((const byte*)b)[0] + (((const byte*)b)[1] << 8);
}
# define ADD_WORD(x) ((x) >> 8)&0xFF, (x)&0xFF
# define ADD_DWORD(x) ((x) >> 24)&0xFF, ((x) >> 16)&0xFF, ((x) >> 8)&0xFF, (x)&0xFF
#endif
static inline void WRITE_LE_UINT16(void *b, uint16 x) {
((byte*)b)[0] = (byte)x;
((byte*)b)[1] = (byte)(x >> 8);
}
#define MAX_DETOUR 6
#endif /* MACROS_H */
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