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
|
#include <stdio.h>
#include "board.h"
void print_board(char* board) {
for (int row = 0; row < BOARD_ROW_BYTES; row++) {
for (int i = 0; i < BOARD_ROW_BYTES; i++) {
int index = BOARD_ROW_BYTES * row + i;
if (board[index] == EMPTY && is_center_index(index)) printf("*");
else printf("%c", board[index]);
}
printf("\n");
}
}
void initialize_board(char* board) {
for (int i = 0; i < BOARD_BYTES; i++) {
board[i] = EMPTY;
}
}
int is_center_index(int index) {
return ((index / BOARD_ROW_BYTES) % 2 == 1) && ((index % BOARD_ROW_BYTES) % 2 == 1);
}
int is_allowed_placement(Tile tile, int index, char* board) {
if (board[index] != EMPTY) return 0;
int neighbor_count = 0;
for (int i = 0; i < 4; i++) {
char neighbor = board[index + neighbor_increments[i]];
if (neighbor != EMPTY) {
if (neighbor != tile.edges[i]) return 0;
neighbor_count++;
}
}
return neighbor_count > 0;
}
int place_tile(Tile tile, int index, char* board, int force) {
if (!is_center_index(index)) {
printf("Not a valid tile index: %i\n", index);
return 0;
}
if (!force && !is_allowed_placement(tile, index, board)) {
printf("Can not place tile %s (%c)\n", tile.edges, tile.center);
return 0;
}
board[index] = tile.center;
for (int i = 0; i < 4; i++) {
board[index + neighbor_increments[i]] = tile.edges[i];
}
return 1;
}
void traverse_structure(char id, int index, char* board, char* structures) {
structures[index] = id;
for (int i = 0; i < 4; i++) {
int new_byte = index + neighbor_increments[i];
if (board[new_byte] == board[index] && structures[new_byte] == EMPTY) {
traverse_structure(id, new_byte, board, structures);
}
}
}
void create_structure_mask(char* board, char* structures) {
char structure_id = '1';
for (int i = 0; i < BOARD_BYTES; i++) {
if (structures[i] == EMPTY && board[i] != EMPTY && board[i] != 'F') {
traverse_structure(structure_id, i, board, structures);
structure_id += 1;
}
}
}
int translate_coordinate(int center_index) {
return (2 * (center_index / BOARD_WIDTH) + 1) *
(2 * BOARD_WIDTH + 1) +
(2 * (center_index % BOARD_WIDTH) + 1);
}
int evaluate_structure(int index, char* board, char* structures) {
int value = 0;
char structure = board[index];
char structure_id = structures[index];
printf("Evaluating group %c (%c)\n", structure_id, structure);
for (int i = 0; i < BOARD_WIDTH; i++) {
for (int j = 0; j < BOARD_WIDTH; j++) {
int index = translate_coordinate(i * BOARD_WIDTH + j);
if (board[index] != EMPTY) { // Empty tiles doesn't count
for (int k = 0; k < 4; k++) {
if (structures[index + neighbor_increments[k]] == structure_id) {
printf("Found at tile %i\n", i * BOARD_WIDTH + j);
value++;
break;
}
}
}
}
}
printf("Value: %i\n", value);
return value;
}
void write_board(char* board, char* filename) {
FILE* file = fopen(filename, "w");
fprintf(file, "%s\n", board);
fclose(file);
}
void read_board(char* board, char* filename) {
FILE* file = fopen(filename, "r");
fgets(board, BOARD_BYTES, file);
fclose(file);
}
|
