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 struct board;
  11
  12 #define coord_raw(c) (c)
  13 #define coord_x(c, b) ((c) % board_size(b))
  14 #define coord_y(c, b) ((c) / board_size(b))
  15 #define coord_eq(c1, c2) ((c1) == (c2))
  16
  17 static coord_t pass = -1;
  18 static coord_t resign = -2;
  19 #define is_pass(c) (coord_eq(c, pass))
  20 #define is_resign(c) (coord_eq(c, resign))
  21
  22 /* Initialize existing coord */
  23 #define coord_pos(coord, pos_, board) do { (coord) = (pos_); } while (0)
  24 #define coord_xy(board, x, y) ((x) + (y) * board_size(board))
  25 #define coord_xy_otf(x, y, board) coord_xy(board, x, y) // obsolete
  26
  27 /* dyn allocated */
  28 static coord_t *coord_init(int x, int y, int size);
  29 static coord_t *coord_copy(coord_t c);
  30 static coord_t *coord_pass(void);
  31 static coord_t *coord_resign(void);
  32 static void coord_done(coord_t *c);
  33 int coord_edge_distance(coord_t c, struct board *b);
  34
  35 struct board;
  36 char *coord2str(coord_t c, struct board *b);
  37 char *coord2sstr(coord_t c, struct board *b);
  38 coord_t *str2coord(char *str, int board_size);
  39
  40
  41 struct move {
  42         coord_t coord;
  43         enum stone color;
  44 };
  45
  46
  47
  48 static inline coord_t *
  49 coord_init(int x, int y, int size)
  50 {
  51         coord_t *c = calloc(1, sizeof(coord_t));
  52         *c = x + y * size;
  53         return c;
  54 }
  55
  56 static inline coord_t *
  57 coord_copy(coord_t c)
  58 {
  59         coord_t *c2 = calloc(1, sizeof(coord_t));
  60         memcpy(c2, &c, sizeof(c));
  61         return c2;
  62 }
  63
  64 static inline coord_t *
  65 coord_pass()
  66 {
  67         return coord_copy(pass);
  68 }
  69
  70 static inline coord_t *
  71 coord_resign()
  72 {
  73         return coord_copy(resign);
  74 }
  75
  76 static inline void
  77 coord_done(coord_t *c)
  78 {
  79         free(c);
  80 }
  81
  82 #endif