1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
|
#include <stdlib.h>
#include <stdio.h>
#include "board.h"
#include "coordinate.h"
#include "move.h"
#include "piece.h"
static Board _setup_colors(Board b) {
short i, j;
for (i = 0; i < SIZE; i++)
for (j = 0; j < SIZE; j++)
if (i % 2)
if (j % 2)
b[i][j].color = BLACK;
else
b[i][j].color = WHITE;
else
if (j % 2)
b[i][j].color = WHITE;
else
b[i][j].color = BLACK;
return b;
}
static Board _set_new_piece(Board b, Coord c, Color color, PieceType t) {
Square s = board_get_square(b, c);
s.piece = new_piece(color, t);
return board_set_square(b, c, s);
}
static Board _pawns(Board b) {
Coord c = coord_set_row(coord_null(), '2');
char col;
for (col = 'a'; col <= 'h'; col++)
_set_new_piece(b, coord_set_col(c, col), WHITE, PAWN);
c = coord_set_row(coord_null(), '7');
for (col = 'a'; col <= 'h'; col++)
_set_new_piece(b, coord_set_col(c, col), BLACK, PAWN);
return b;
}
static Board _rocks(Board b) {
_set_new_piece(b, coord_init("a1"), WHITE, ROCK);
_set_new_piece(b, coord_init("h1"), WHITE, ROCK);
_set_new_piece(b, coord_init("a8"), BLACK, ROCK);
_set_new_piece(b, coord_init("h8"), BLACK, ROCK);
return b;
}
static Board _knights(Board b) {
_set_new_piece(b, coord_init("b1"), WHITE, KNIGHT);
_set_new_piece(b, coord_init("g1"), WHITE, KNIGHT);
_set_new_piece(b, coord_init("b8"), BLACK, KNIGHT);
_set_new_piece(b, coord_init("g8"), BLACK, KNIGHT);
return b;
}
static Board _bishops(Board b) {
_set_new_piece(b, coord_init("c1"), WHITE, BISHOP);
_set_new_piece(b, coord_init("f1"), WHITE, BISHOP);
_set_new_piece(b, coord_init("c8"), BLACK, BISHOP);
_set_new_piece(b, coord_init("f8"), BLACK, BISHOP);
return b;
}
static Board _queens(Board b) {
_set_new_piece(b, coord_init("d1"), WHITE, QUEEN);
_set_new_piece(b, coord_init("d8"), BLACK, QUEEN);
return b;
}
static Board _kings(Board b) {
_set_new_piece(b, coord_init("e1"), WHITE, KING);
_set_new_piece(b, coord_init("e8"), BLACK, KING);
return b;
}
static Board _setup_pieces(Board b) {
return _pawns(_rocks(_knights(_bishops(_queens(_kings(b)))))); // :-)
}
static Board _initial_setup(Board b) {
return _setup_pieces(_setup_colors(b));
}
static short _from_col(char col) {
// col is a character between 'a' and 'h'
return col - 'a';
}
static short _from_row(char row) {
// row is an ASCII digit between '1' and '8'
return row - '1';
}
Board board_init() {
int i, j;
Board b = malloc(sizeof(Square*) * SIZE);
for (i = 0; i < SIZE; i++) {
b[i] = malloc(sizeof(Square) * SIZE);
for (j = 0; j < SIZE; j++)
b[i][j].piece = NULL;
}
return _initial_setup(b);
}
int board_delete(Board b) {
short i, j;
for (i = 0; i < SIZE; i++) {
for (j = 0; j < SIZE; j++)
if (b[i][j].piece != NULL)
free(b[i][j].piece);
free(b[i]);
}
free(b);
return 0;
}
Square board_get_square(Board b, Coord c) {
short x = _from_col(c.col);
short y = _from_row(c.row);
return b[x][y];
}
Board board_set_square(Board b, Coord c, Square s) {
short x = _from_col(c.col);
short y = _from_row(c.row);
b[x][y] = s;
return b;
}
Board board_make_move(Board b, Move m) {
/* Get piece from orig square coordinate */
Square s = board_get_square(b, move_get_orig(m));
Piece *p = s.piece;
/* Empty orig square */
s.piece = NULL;
board_set_square(b, move_get_orig(m), s);
/* Set piece on dest square */
s = board_get_square(b, move_get_dest(m));
s.piece = p;
board_set_square(b, move_get_dest(m), s);
return b;
}
|
