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) % board_size(b))
  13 #define coord_y(c, b) ((c) / board_size(b))
  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(board, x, y) ((x) + (y) * board_size(board))
  24 #define coord_xy_otf(x, y, board) coord_xy(board, x, y) // obsolete
  25
  26 #define coord_is_adjecent(c1, c2, b) (abs(c1 - c2) == 1 || abs(c1 - c2) == board_size(b))
  27 #define coord_is_8adjecent(c1, c2, b) (abs(c1 - c2) == 1 || abs(abs(c1 - c2) - board_size(b)) < 2)
  28
  29 /* dyn allocated */
  30 static coord_t *coord_init(int x, int y, int size);
  31 static coord_t *coord_copy(coord_t c);
  32 static coord_t *coord_pass(void);
  33 static coord_t *coord_resign(void);
  34 static void coord_done(coord_t *c);
  35
  36 struct board;
  37 char *coord2str(coord_t c, struct board *b);
  38 char *coord2sstr(coord_t c, struct board *b);
  39 coord_t *str2coord(char *str, int board_size);
  40
  41
  42 struct move {
  43         coord_t coord;
  44         enum stone color;
  45 };
  46
  47
  48
  49 static inline coord_t *
  50 coord_init(int x, int y, int size)
  51 {
  52         coord_t *c = calloc(1, sizeof(coord_t));
  53         *c = x + y * size;
  54         return c;
  55 }
  56
  57 static inline coord_t *
  58 coord_copy(coord_t c)
  59 {
  60         coord_t *c2 = calloc(1, sizeof(coord_t));
  61         memcpy(c2, &c, sizeof(c));
  62         return c2;
  63 }
  64
  65 static inline coord_t *
  66 coord_pass()
  67 {
  68         return coord_copy(pass);
  69 }
  70
  71 static inline coord_t *
  72 coord_resign()
  73 {
  74         return coord_copy(resign);
  75 }
  76
  77 static inline void
  78 coord_done(coord_t *c)
  79 {
  80         free(c);
  81 }
  82
  83 #endif