1 files changed, 6 insertions, 0 deletions
diff --git a/rect.c b/rect.c
index 0448958..c040efa 100644
--- a/rect.c
+++ b/rect.c
@@ -2183,6 +2183,11 @@ static void ui_draw_rect(game_state *state, game_ui *ui,
             }
 }
 
+static void game_changed_state(game_ui *ui, game_state *oldstate,
+                               game_state *newstate)
+{
+}
+
 static game_state *make_move(game_state *from, game_ui *ui, game_drawstate *ds,
                              int x, int y, int button) {
     int xc, yc;
@@ -2549,6 +2554,7 @@ const struct game thegame = {
     TRUE, game_text_format,
     new_ui,
     free_ui,
+    game_changed_state,
     make_move,
     game_size,
     game_colours,