--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/macros.h Mon Aug 09 17:04:08 2004 +0000
@@ -0,0 +1,215 @@
+#ifndef MACROS_H
+#define MACROS_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 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 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 TILE_X_BITS 8
+#define TILE_Y_BITS 8
+#define LANDSCAPE_SIZE_FACTOR 1
+
+#define TILE_FROM_XY(x,y) (int)((((y) >> 4) << TILE_X_BITS) + ((x) >> 4))
+#define TILE_XY(x,y) (int)(((y) << TILE_X_BITS) + (x))
+
+#define IS_TILETYPE(_t_, _s_) (_map_type_and_height[(_t_)] >> 4 == (_s_))
+#define GET_TILETYPE(_t_) (_map_type_and_height[(_t_)] >> 4)
+#define GET_TILEHEIGHT(_t_) ((_map_type_and_height[_t_] & 0xF) * 8)
+
+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 TILES_X (1 << TILE_X_BITS)
+#define TILES_Y (1 << TILE_Y_BITS)
+
+#define TILE_X_MAX (TILES_X-1)
+#define TILE_Y_MAX (TILES_Y-1)
+
+#define TILE_ASSERT(x) assert( TILE_MASK(x) == (x) );
+
+extern uint SafeTileAdd(uint x, int add, const char *exp, const char *file, int line);
+
+#if !defined(_DEBUG) || TILE_X_BITS != 8
+# define TILE_ADD(x,y) ((x)+(y))
+#else
+# if defined(__GNUC__)
+# define TILE_ADD(x,y) (SafeTileAdd((x),(y), "??", __FILE__, __LINE__))
+# else
+# define TILE_ADD(x,y) (SafeTileAdd((x),(y), #x ## ", " ## #y, __FILE__, __LINE__))
+# endif
+#endif
+
+#define TILE_ADDXY(tile, x, y) TILE_ADD(tile, TILE_XY(x,y))
+
+#if TILE_X_BITS == 8
+#define GET_TILE_X(t) (uint)((byte)(t))
+#define GET_TILE_Y(t) (uint)((t) >> 8)
+#define TILE_MASK(x) ((uint16)(x))
+#else
+#define GET_TILE_X(t) (uint)((t) & ((1 << TILE_X_BITS)-1))
+#define GET_TILE_Y(t) (uint)((t) >> TILE_X_BITS)
+#define TILE_MASK(x) (int)((x) & ((1 << (TILE_X_BITS + TILE_Y_BITS))-1))
+#endif
+
+//#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)))
+
+// 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];
+#define FIND_FIRST_BIT(x) _ffb_64[(x)]
+#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);
+}
+
+
+#if TILE_X_BITS + TILE_Y_BITS <= 16
+ typedef uint16 TileIndex;
+ typedef int16 TileIndexDiff;
+#else
+ typedef uint32 TileIndex;
+ typedef int32 TileIndexDiff;
+#endif
+
+/* [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 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) (*(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 ((byte*)b)[0] + (((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(const void *b, uint16 x) {
+ ((byte*)b)[0] = (byte)x;
+ ((byte*)b)[1] = (byte)(x >> 8);
+}
+
+#endif /* MACROS_H */