feat: support separator (+) feature

3 files changed, 13 insertions, 6 deletions

diff --git a/src/board.c b/src/board.c
index 92420ed..cc16e06 100644
--- a/src/board.c
+++ b/src/board.c
@@ -58,11 +58,10 @@ void traverse_structure(int group, int index, BoardUnit* board) {
     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 == '*' && board[new_unit].structure_group != board[index].structure_group) {
+    } 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 = '*';
+      board[new_unit].feature = ANY;
     }
   }
 }
@@ -72,7 +71,12 @@ void refresh_structure_groups(BoardUnit* board) {
 
   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 != 'F') {
+    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;
     }
diff --git a/src/board.h b/src/board.h
index 4a8c4e8..4785871 100644
--- a/src/board.h
+++ b/src/board.h
@@ -5,6 +5,9 @@
 
 /* constants */
 const char EMPTY = ' ';
+const char ANY = '*';
+const char SEPARATOR = '+';
+
 const int NEIGHBOR_INCREMENTS[] = { -BOARD_ROW_UNITS, 1, BOARD_ROW_UNITS, -1 };
 
 /* structs */
diff --git a/src/main.c b/src/main.c
index a538675..ab5409e 100644
--- a/src/main.c
+++ b/src/main.c
@@ -8,7 +8,7 @@ void draw_board(BoardUnit* board, WINDOW* win) {
   for (int row = 0; row < BOARD_ROW_UNITS; row++) {
     for (int i = 0; i < BOARD_ROW_UNITS; i++) {
       int index = BOARD_ROW_UNITS * row + i;
-      if (board[index].feature == EMPTY && is_center_index(index)) waddch(win, '*');
+      if (board[index].feature == EMPTY && is_center_index(index)) waddch(win, '.');
       else waddch(win, board[index].feature | COLOR_PAIR(board[index].structure_group % 6));
     }
   }
@@ -47,7 +47,7 @@ int main() {
   place_tile(tile, translate_coordinate(BOARD_WIDTH * BOARD_WIDTH / 2), board, 1);
 
   Tile tileset[5] = {
-    { "RRRR", 'R', 0 },
+    { "RRRR", '+', 0 },
     { "FCCC", 'C', 0 },
     { "FFFC", 'C', 0 },
     { "CCRR", '*', 0 },