collectables

src/core/bubble.rs

@@ -21,7 +21,7 @@ pub fn bubble_spawn(mut commands: Commands, asset_server: Res<AssetServer>) {
     let texture: Handle<Image> = asset_server.load("sprites/bubble.png");
     let mut rng = rand::rng();
 
-    for _ in 0..500 {
+    for _ in 0..50 {
         let angle = rng.random_range(0.0..TAU);
         let pos = Vec2::from_angle(angle) * 500.0;
 

src/core/collectible.rs

@@ -0,0 +1,118 @@
+use std::path::Path;
+use std::time::Duration;
+
+#[derive(Component)]
+struct kirbyTimer(Timer);
+
+use crate::core::counter::BubbleKilledTotalCount;
+use crate::core::kirby::{Kirby, kirby_spawn};
+use crate::physics::sphere_collider::SphereCollider;
+use bevy::prelude::*;
+
+const ASSETS_NAME: [&str; 3] = ["speed_item.png", "shield_item.png", "kirby_item.png"];
+const COLLECTABLE_COLLIDER_RADIUS: f32 = 50.0;
+const KIRBY_SPAWN_TIMER_DURATION: Duration = Duration::from_secs(2);
+
+#[derive(Clone, Copy)]
+pub enum CollectableType {
+    SpeedBoost = 0,
+    ShieldBoost = 1,
+    NewKirby = 2,
+}
+
+#[derive(Component)]
+#[require(SphereCollider, Sprite)]
+pub struct Collectable(CollectableType);
+
+// Not a system.
+pub fn collectable_spawn(
+    commands: &mut Commands,
+    asset_server: &Res<AssetServer>,
+    collectable_type: CollectableType,
+    pos: Vec3,
+) {
+    let asset_name = ASSETS_NAME[collectable_type as usize];
+    let asset_path = Path::new("sprites").join(asset_name);
+    let sprite = Sprite::from_image(asset_server.load(asset_path));
+    commands.spawn((
+        Collectable(collectable_type),
+        SphereCollider::new(COLLECTABLE_COLLIDER_RADIUS),
+        Transform::from_translation(pos).with_scale(Vec3::splat(5.0)),
+        sprite,
+    ));
+}
+
+pub struct CollectableSpawner;
+pub fn collectable_spawner_init(mut commands: Commands, asset_server: Res<AssetServer>) {
+    collectable_spawn(&mut commands, &asset_server, CollectableType::NewKirby, Vec3::new(250.0, 250.0, 0.0));
+}
+
+pub fn collectable_actions_system(
+    mut commands: Commands,
+    mut kirby_query: Query<(&mut Kirby, &SphereCollider, &Transform)>,
+    collectable_query: Query<(Entity, &Collectable, &SphereCollider, &Transform)>,
+) {
+    for (mut kirby, kirby_collider, kirby_tf) in &mut kirby_query {
+        for (collectible_entity, collectible, c_collider, collectable_tf) in collectable_query {
+            let collides = c_collider.collides(collectable_tf.translation, kirby_collider, kirby_tf.translation);
+            let kirby_pos = kirby_tf.translation;
+            if !collides {
+                continue;
+            }
+
+            match &collectible.0 {
+                CollectableType::SpeedBoost => speed_boost(&mut kirby),
+                CollectableType::ShieldBoost => shield_boost(&mut kirby),
+                CollectableType::NewKirby => new_kirby(kirby_pos, &mut commands),
+            }
+
+            commands.entity(collectible_entity).despawn();
+        }
+    }
+}
+
+fn speed_boost(kirby: &mut Kirby) {
+    kirby.speed_force *= 1.2;
+}
+
+fn shield_boost(kirby: &mut Kirby) {
+    kirby.shield_factor *= 0.8;
+}
+
+fn new_kirby(kirby_pos: Vec3, commands: &mut Commands) {
+    commands.spawn(
+        (KirbySpawnHandler { timer: Timer::new(KIRBY_SPAWN_TIMER_DURATION, TimerMode::Once), position: kirby_pos }),
+    );
+}
+
+#[derive(Component)]
+struct KirbySpawnHandler {
+    timer: Timer,
+    position: Vec3,
+}
+
+// After player get new_kirby item, it should spawn a new_kirby after a certain time
+pub fn kirby_spawn_timer(
+    mut commands: Commands,
+    asset_server: Res<AssetServer>,
+    mut texture_atlas_layouts: ResMut<Assets<TextureAtlasLayout>>,
+    query: Query<(&mut KirbySpawnHandler, Entity)>,
+    time: Res<Time>,
+) {
+    for (mut kirby_spawn_handler, kirby_spawn_entity) in query {
+        kirby_spawn_handler.timer.tick(time.delta());
+        if kirby_spawn_handler.timer.is_finished() {
+            kirby_spawn(&mut commands, &asset_server, &mut texture_atlas_layouts, kirby_spawn_handler.position);
+            commands.entity(kirby_spawn_entity).despawn();
+        }
+    }
+}
+pub struct CollectablePlugin;
+
+impl Plugin for CollectablePlugin {
+    fn build(&self, app: &mut App) {
+        app.add_systems(Startup, collectable_spawner_init)
+            .add_systems(FixedUpdate, collectable_actions_system)
+            .add_systems(Update, kirby_spawn_timer);
+    }
+}

src/core/counter.rs

@@ -3,7 +3,7 @@ use derive_more::{Deref, DerefMut};
 
 #[derive(Resource, Default)]
 pub struct Counter {
-    pub count: u32,
+    count: u32,
 }
 
 impl Counter {
@@ -14,7 +14,14 @@ impl Counter {
     pub fn reset(&mut self) {
         self.count = 0;
     }
+
+    pub fn get_count(&self) -> u32 {
+        self.count
     }
+}
+
+#[derive(Resource, Default)]
+pub struct BubbleKilledTotalCount(pub Counter);
 
 #[derive(Resource, Default, Deref, DerefMut)]
 pub struct BubbleExplodedCountThisFrame(pub Counter);
@@ -26,13 +33,15 @@ pub struct BubbleSuckedCountThisFrame(pub Counter);
 pub struct KirbyHitCountThisFrame(pub Counter);
 
 fn reset_frame_counters(
-    mut bubble_sucked: ResMut<BubbleSuckedCountThisFrame>,
+    mut bubble_sucked_this_frame: ResMut<BubbleSuckedCountThisFrame>,
-    mut bubble_exploded: ResMut<BubbleExplodedCountThisFrame>,
+    mut bubble_exploded_this_frame: ResMut<BubbleExplodedCountThisFrame>,
-    mut kirby_hit: ResMut<KirbyHitCountThisFrame>,
+    mut kirby_hit_count_this_frame: ResMut<KirbyHitCountThisFrame>,
+    mut total_killed: ResMut<BubbleKilledTotalCount>,
 ) {
-    bubble_sucked.reset();
+    total_killed.0.count += bubble_sucked_this_frame.count + bubble_exploded_this_frame.count;
-    bubble_exploded.reset();
+    bubble_sucked_this_frame.reset();
-    kirby_hit.reset();
+    bubble_exploded_this_frame.reset();
+    kirby_hit_count_this_frame.reset();
 }
 
 pub struct CounterPlugin;
@@ -42,6 +51,7 @@ impl Plugin for CounterPlugin {
         app.insert_resource(BubbleSuckedCountThisFrame::default())
             .insert_resource(BubbleExplodedCountThisFrame::default())
             .insert_resource(KirbyHitCountThisFrame::default())
+            .insert_resource(BubbleKilledTotalCount::default())
             .add_systems(FixedPostUpdate, reset_frame_counters);
     }
 }

src/core/kirby.rs

@@ -16,14 +16,25 @@ pub struct SuckArea;
 #[derive(Component)]
 #[require(Sprite, PhysicsBody, SphereCollider, AnimationIndices, Life)]
 pub struct Kirby {
-    speed_force: f32,
+    pub speed_force: f32,
     pub is_sucking: bool,
+    pub shield_factor: f32, // 1.0 receive full damage, 0.1 receive 10% of damage
 }
 
-pub fn kirby_spawn(
+pub fn kirby_spawn_start(
     mut commands: Commands,
     asset_server: Res<AssetServer>,
     mut texture_atlas_layouts: ResMut<Assets<TextureAtlasLayout>>,
+) {
+    kirby_spawn(&mut commands, &asset_server, &mut texture_atlas_layouts, Vec3::ZERO);
+    // kirby_spawn(&mut commands, &asset_server, &mut texture_atlas_layouts, Vec3 { x: 500.0, y: 0.0, z: 0.0 });
+}
+
+pub fn kirby_spawn(
+    commands: &mut Commands,
+    asset_server: &Res<AssetServer>,
+    texture_atlas_layouts: &mut ResMut<Assets<TextureAtlasLayout>>,
+    pos: Vec3,
 ) {
     let texture: Handle<Image> = asset_server.load("sprites/Sprite_kirby-Sheet.png");
     let layout = TextureAtlasLayout::from_grid(UVec2::splat(32), 3, 3, None, None);
@@ -32,7 +43,7 @@ pub fn kirby_spawn(
 
     let kirby_entity = commands
         .spawn((
-            Kirby { speed_force: 10000.0, is_sucking: false },
+            Kirby { speed_force: 10000.0, is_sucking: false, shield_factor: 1.0 },
             Sprite::from_atlas_image(
                 texture,
                 TextureAtlas { layout: texture_atlas_layout, index: animation_indices.first },
@@ -42,7 +53,7 @@ pub fn kirby_spawn(
             animation_indices,
             AnimationTimer(Timer::from_seconds(0.1, TimerMode::Repeating)),
             Life::new(1000.0),
-            Transform::from_scale(Vec3::splat(KIRBY_SCALE)),
+            Transform::from_translation(pos).with_scale(Vec3::splat(KIRBY_SCALE)),
         ))
         .id();
 
@@ -108,6 +119,6 @@ pub struct KirbyPlugin;
 
 impl Plugin for KirbyPlugin {
     fn build(&self, app: &mut App) {
-        app.add_systems(Startup, kirby_spawn).add_systems(FixedUpdate, kirby_actions);
+        app.add_systems(Startup, kirby_spawn_start).add_systems(FixedUpdate, kirby_actions);
     }
 }

src/core/life.rs

@@ -86,16 +86,16 @@ pub fn bubble_receive_damage(
 pub fn kirby_receive_damage(
     mut bubble_exploded: ResMut<BubbleExplodedCountThisFrame>,
     mut kirby_hit: ResMut<KirbyHitCountThisFrame>,
-    mut kirby_query: Query<(&GlobalTransform, &mut Life), (With<Kirby>, Without<Bubble>)>,
+    mut kirby_query: Query<(&Kirby, &GlobalTransform, &mut Life), (Without<Bubble>)>,
     mut bubble_query: Query<
         (&GlobalTransform, &SphereCollider, &DamageDealer, &mut Life),
         (With<Bubble>, Without<Kirby>),
     >,
 ) {
-    for (kirby_transform, mut kirby_life) in &mut kirby_query {
+    for (kirby, kirby_transform, mut kirby_life) in &mut kirby_query {
         for (bubble_transform, bubble_sphere_collider, bubble_damage_dealer, mut bubble_life) in &mut bubble_query {
             if bubble_sphere_collider.point_inside(kirby_transform.translation(), bubble_transform.translation()) {
-                kirby_life.damage(bubble_damage_dealer.damage_strength);
+                kirby_life.damage(bubble_damage_dealer.damage_strength * kirby.shield_factor);
                 bubble_life.damage(1000000.0); // Bubble explode
                 // println!("{:?}", kirby_life.current_life)
                 bubble_exploded.increase(1);

src/core/mod.rs

@@ -1,4 +1,5 @@
 pub mod bubble;
+pub mod collectible;
 pub mod counter;
 pub mod kirby;
 pub mod life;

src/juice/camera.rs

@@ -32,7 +32,7 @@ pub fn camera_shake(
 
     let rand_angle = rand::random_range(0.0..TAU);
     let rand_vec = Vec2::from_angle(rand_angle);
-    let shaking_strength = kirby_hit_count.count as f32 * parent.shaking_intensity_factor;
+    let shaking_strength = kirby_hit_count.get_count() as f32 * parent.shaking_intensity_factor;
     let shaking_vec = rand_vec * shaking_strength;
     let mut child_translation = child_transform.translation.clone();
     child_translation += shaking_vec.extend(0.0);

src/main.rs

@@ -7,19 +7,19 @@ use physics::physics_body::physics_integrate;
 
 mod core;
 use core::bubble::BubblePlugin;
+use core::collectible::CollectablePlugin;
 use core::counter::CounterPlugin;
 use core::kirby::KirbyPlugin;
 use core::life::{bubble_receive_damage, despawn_if_dead, kirby_receive_damage};
 
 mod map;
+use map::map::MAP_SIZE;
 use map::map::MapBounds;
 
 mod juice;
 use juice::animation::animate_sprite;
 use juice::camera::MyCameraPlugin;
 
-const MAP_SIZE: u32 = 1000;
-
 fn main() {
     App::new()
         .add_plugins(DefaultPlugins.set(ImagePlugin::default_nearest()).set(WindowPlugin {
@@ -36,6 +36,7 @@ fn main() {
         .add_plugins(DensityGridPlugin)
         .add_plugins(BubblePlugin)
         .add_plugins(MyCameraPlugin)
+        .add_plugins(CollectablePlugin)
         .insert_resource(Time::<Fixed>::from_seconds(1.0 / 60.0))
         .insert_resource(MapBounds { min: -Vec2::ONE * MAP_SIZE as f32 / 2.0, max: Vec2::ONE * MAP_SIZE as f32 / 2.0 })
         .add_systems(Update, animate_sprite)

src/map/map.rs

@@ -1,5 +1,7 @@
 use bevy::prelude::*;
 
+pub const MAP_SIZE: u32 = 1000;
+
 #[derive(Resource)]
 pub struct MapBounds {
     pub min: Vec2,