move.h

   1 #ifndef ZZGO_MOVE_H
   2 #define ZZGO_MOVE_H
   3
   4 #include <stdint.h>
   5 #include <string.h>
   6
   7 #include "stone.h"
   8
   9 typedef int coord_t;
  10
  11 #define coord_raw(c) (c)
  12 #define coord_x(c, b) ((c) % (b)->size)
  13 #define coord_y(c, b) ((c) / (b)->size)
  14 #define coord_eq(c1, c2) ((c1) == (c2))
  15
  16 static coord_t pass = -1;
  17 static coord_t resign = -2;
  18 #define is_pass(c) (coord_eq(c, pass))
  19 #define is_resign(c) (coord_eq(c, resign))
  20
  21 /* Initialize existing coord */
  22 #define coord_pos(coord, pos_, board) do { (coord) = (pos_); } while (0)
  23 #define coord_xy(coord, x, y, board) coord_pos(coord, (x) + (y) * (board)->size, board)
  24 #define coord_xy_otf(x, y, board) ((x) + (y) * (board)->size)
  25
  26 /* dyn allocated */
  27 static coord_t *coord_init(int x, int y, int size);
  28 static coord_t *coord_copy(coord_t c);
  29 static coord_t *coord_pass(void);
  30 static coord_t *coord_resign(void);
  31 static void coord_done(coord_t *c);
  32
  33 struct board;
  34 char *coord2str(coord_t c, struct board *b);
  35 char *coord2sstr(coord_t c, struct board *b);
  36 coord_t *str2coord(char *str, int board_size);
  37
  38
  39 struct move {
  40         coord_t coord;
  41         enum stone color;
  42 };
  43
  44
  45
  46 static inline coord_t *
  47 coord_init(int x, int y, int size)
  48 {
  49         coord_t *c = calloc(1, sizeof(coord_t));
  50         *c = x + y * size;
  51         return c;
  52 }
  53
  54 static inline coord_t *
  55 coord_copy(coord_t c)
  56 {
  57         coord_t *c2 = calloc(1, sizeof(coord_t));
  58         memcpy(c2, &c, sizeof(c));
  59         return c2;
  60 }
  61
  62 static inline coord_t *
  63 coord_pass()
  64 {
  65         return coord_copy(pass);
  66 }
  67
  68 static inline coord_t *
  69 coord_resign()
  70 {
  71         return coord_copy(resign);
  72 }
  73
  74 static inline void
  75 coord_done(coord_t *c)
  76 {
  77         free(c);
  78 }
  79
  80 #endif