added cooking timer indicator, and burger indicator for inventory

src/main.rs

@@ -1,4 +1,4 @@
-use bevy::prelude::*;
+use bevy::{light::NotShadowCaster, prelude::*};
 
 fn main() {
     App::new()
@@ -6,7 +6,14 @@ fn main() {
         .add_systems(Startup, setup)
         .add_systems(
             Update,
-            (handle_click, move_to_target, fryer_cook, customer_serve),
+            (
+                handle_click,
+                move_to_target,
+                fryer_cook,
+                customer_serve,
+                update_progress_bar,
+                update_burger_indicators,
+            ),
         )
         .run();
 }
@@ -41,6 +48,14 @@ struct Player {
     holding: Item,
     progress: f32,
 }
+#[derive(Component)]
+struct ProgressBar {
+    width: f32,
+    player_height: f32,
+}
+
+#[derive(Component)]
+struct PlayerBurgerIndicator;
 
 #[derive(Component)]
 struct MoveTarget {
@@ -119,6 +134,25 @@ fn setup(
         MoveTarget {
             position: Vec3::new(0.0, 0.0, 0.0),
         },
+        // Burger indicator
+        children![(
+            SceneRoot(asset_server.load("models/burger.glb#Scene0")),
+            Transform::from_xyz(0.0, 7.1, 0.0).with_scale(Vec3::splat(0.9)),
+            Visibility::Hidden,
+            PlayerBurgerIndicator,
+        )],
+    ));
+
+    // ProgressBar
+    commands.spawn((
+        Mesh3d(meshes.add(Cuboid::new(4.0, 0.5, 0.1))),
+        MeshMaterial3d(materials.add(Color::srgb(0.0, 1.0, 0.0))),
+        Transform::from_xyz(0.0, 0.0, 0.0),
+        ProgressBar {
+            width: 1.0,
+            player_height: 4.0,
+        },
+        NotShadowCaster,
     ));
 
     // Customer
@@ -211,9 +245,11 @@ fn fryer_cook(
     fryer: Query<(&Fryer, &Transform)>,
     time: Res<Time>,
 ) {
-    for (mut player_data, player_transform) in player.iter_mut() {
+    let Ok((mut player_data, player_transform)) = player.single_mut() else {
+        return;
+    };
     if player_data.holding == Item::Burger {
-            continue;
+        return;
     }
     for (fryer, fryer_transform) in fryer.iter() {
         let distance = player_transform.translation - fryer_transform.translation;
@@ -228,18 +264,79 @@ fn fryer_cook(
             player_data.progress = 0.0;
         }
     }
+}
+
+fn update_progress_bar(
+    player: Query<(&Player, &Transform), Without<ProgressBar>>,
+    mut progress_bar: Query<(&mut Transform, &mut Visibility, &ProgressBar)>,
+    camera: Query<&Transform, (With<Camera3d>, Without<ProgressBar>, Without<Player>)>,
+) {
+    let Ok((player, player_transform)) = player.single() else {
+        return;
+    };
+    let Ok((mut bar_transform, mut visibility, bar_data)) = progress_bar.single_mut() else {
+        return;
+    };
+    let Ok(camera_transform) = camera.single() else {
+        return;
+    };
+
+    let progress_percent = (player.progress / 100.0).clamp(0.0, 1.0);
+
+    // Update above player
+    bar_transform.translation = player_transform.translation + Vec3::Y * bar_data.player_height;
+
+    // Billboard effect
+    let to_camera = (camera_transform.translation - bar_transform.translation).normalize();
+    let angle = to_camera.z.atan2(to_camera.x);
+    bar_transform.rotation = Quat::from_rotation_y(angle + std::f32::consts::FRAC_PI_2);
+
+    bar_transform.scale.x = bar_data.width * progress_percent;
+
+    if progress_percent == 0.0 || progress_percent == 1.0 {
+        *visibility = Visibility::Hidden;
+    } else {
+        *visibility = Visibility::Visible;
     }
 }
 
+fn update_burger_indicators(
+    player: Query<&Player>,
+    mut burger: Query<(&mut Visibility, &mut Transform), With<PlayerBurgerIndicator>>,
+    time: Res<Time>,
+) {
+    let Ok(player_data) = player.single() else {
+        return;
+    };
+    let Ok((mut burger_vis, mut burger_transform)) = burger.single_mut() else {
+        return;
+    };
+
+    // Rotate burger
+    burger_transform.rotate_y(time.delta_secs());
+
+    // Show/hide based on inventory
+    *burger_vis = if player_data.holding == Item::Burger {
+        Visibility::Visible
+    } else {
+        Visibility::Hidden
+    };
+}
+
 fn customer_serve(
     mut customer: Query<(&mut Customer, &mut MoveTarget, &Transform)>,
     mut player: Query<(&mut Player, &Transform)>,
 ) {
-    for (mut player_data, player_transform) in player.iter_mut() {
+    let Ok((mut player_data, player_transform)) = player.single_mut() else {
+        return;
+    };
     if player_data.holding == Item::None {
-            continue;
+        return;
     }
     for (mut customer_data, mut customer_target, customer_transform) in customer.iter_mut() {
+        if customer_data.served {
+            continue;
+        }
         if player_data.holding != customer_data.order {
             continue;
         }
@@ -248,8 +345,7 @@ fn customer_serve(
         if distance.length() < customer_data.range {
             player_data.holding = Item::None;
             customer_data.served = true;
-                customer_target.position = Vec3::new(20.0, 0.0, 0.0);
-            }
+            customer_target.position = Vec3::new(100.0, 0.0, 0.0);
         }
     }
 }