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#include "structure.h"
void traverse_structure(int group, int index, BoardUnit* board) {
board[index].structure_group = group;
for (int i = 0; i < 4; i++) {
int new_unit = index + NEIGHBOR_INCREMENTS[i];
if (board[new_unit].feature == board[index].feature && board[new_unit].structure_group == 0) {
traverse_structure(group, new_unit, board);
} else if (board[new_unit].feature == ANY && board[new_unit].structure_group != board[index].structure_group) {
board[new_unit].feature = board[index].feature;
traverse_structure(group, new_unit, board);
board[new_unit].feature = ANY;
}
}
}
void refresh_structure_groups(BoardUnit* board) {
for (int i = 0; i < BOARD_UNITS; i++) board[i].structure_group = 0;
int structure_group = 1;
for (int i = 0; i < BOARD_UNITS; i++) {
if (
board[i].structure_group == 0
&& board[i].feature != EMPTY
&& board[i].feature != SEPARATOR
&& board[i].feature != 'F'
) {
traverse_structure(structure_group, i, board);
structure_group += 1;
}
}
}
int evaluate_structure(int index, BoardUnit* board) {
int value = 0;
char feature = board[index].feature;
int structure_group = board[index].structure_group;
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].feature != EMPTY) { // Empty tiles doesn't count
for (int k = 0; k < 4; k++) {
if (board[index + NEIGHBOR_INCREMENTS[k]].structure_group == structure_group) {
value++;
break;
}
}
}
}
}
return value;
}
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