feat: add tile preview with rotation

1 files changed, 11 insertions, 0 deletions

diff --git a/src/board.c b/src/board.c
index 263e205..056156c 100644
--- a/src/board.c
+++ b/src/board.c
@@ -48,6 +48,17 @@ int place_tile(Tile tile, int index, BoardUnit* board, int force) {
   return 1;
 }
 
+void rotate_tile(Tile* tile, int increment) {
+  char buffer[8];
+  for (int i = 0; i < 8; i++) {
+    buffer[i] = tile->edges[i % 4];
+  }
+
+  for (int i = 0; i < 4; i++) {
+    tile->edges[i] = buffer[i + (increment % 4)];
+  }
+}
+
 void traverse_structure(int group, int index, BoardUnit* board) {
   board[index].structure_group = group;
   for (int i = 0; i < 4; i++) {