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
  25 /* dyn allocated */
  26 static coord_t *coord_init(int x, int y, int size);
  27 static coord_t *coord_copy(coord_t c);
  28 static coord_t *coord_pass(void);
  29 static coord_t *coord_resign(void);
  30 static void coord_done(coord_t *c);
  31
  32 struct board;
  33 char *coord2str(coord_t c, struct board *b);
  34 coord_t *str2coord(char *str, int board_size);
  35
  36
  37 struct move {
  38         coord_t coord;
  39         enum stone color;
  40 };
  41
  42
  43
  44 static inline coord_t *
  45 coord_init(int x, int y, int size)
  46 {
  47         coord_t *c = calloc(1, sizeof(coord_t));
  48         *c = x + y * size;
  49         return c;
  50 }
  51
  52 static inline coord_t *
  53 coord_copy(coord_t c)
  54 {
  55         coord_t *c2 = calloc(1, sizeof(coord_t));
  56         memcpy(c2, &c, sizeof(c));
  57         return c2;
  58 }
  59
  60 static inline coord_t *
  61 coord_pass()
  62 {
  63         return coord_copy(pass);
  64 }
  65
  66 static inline coord_t *
  67 coord_resign()
  68 {
  69         return coord_copy(resign);
  70 }
  71
  72 static inline void
  73 coord_done(coord_t *c)
  74 {
  75         free(c);
  76 }
  77
  78 #endif