fix stopwatch

src/main.rs

@@ -92,7 +92,7 @@ fn main() {
                 mark_box,
                 markflip_box,
             ))
-        .add_systems(OnEnter(GameState::Start), (despawn_boxes.before(draw_boxes), draw_boxes))
+        .add_systems(OnEnter(GameState::Start), (despawn_boxes, draw_boxes).chain())
         .add_systems(OnEnter(GameState::Fail), draw_fail)
         .add_systems(OnEnter(GameState::Win), draw_win)
         .run();
@@ -103,7 +103,7 @@ fn despawn_boxes(
     boxes: Query<Entity, With<Box>>,
 ) {
     for e in boxes.iter() {
-        commands.entity(e).despawn();
+        commands.entity(e).despawn_recursive();
     }
 }
 
@@ -111,6 +111,8 @@ fn despawn_boxes(
 fn load_initial_entities(
     mut commands: Commands,
 ) {
+    let mut stopwatch = Stopwatch::new();
+    stopwatch.pause();
     commands.spawn((
         // Accepts a `String` or any type that converts into a `String`, such as `&str`
         Text::new("0"),
@@ -125,7 +127,7 @@ fn load_initial_entities(
             right: Val::Percent(50.),
             ..default()
         },
-        GameStopwatch(Stopwatch::new()),
+        GameStopwatch(stopwatch),
     ));
 
 }
@@ -153,6 +155,7 @@ fn switch_to_win(
 fn draw_win(
     mut commands: Commands,
     mut game_stopwatch: Query<&mut GameStopwatch>,
+    mut next_state: ResMut<NextState<GameState>>,
     ) {
     let mut stopwatch = game_stopwatch.single_mut();
     stopwatch.0.pause();
@@ -171,6 +174,7 @@ fn draw_win(
             ..default()
         },
     ));
+    next_state.set(GameState::Start);
 }
 fn draw_fail(
     mut commands: Commands,
@@ -326,6 +330,7 @@ fn init_mines(
         }
     }
     game_stopwatch.single_mut().0.reset();
+    game_stopwatch.single_mut().0.unpause();
     next_state.set(GameState::Playing);
 }