feat: Add smoke explosion on demon boss spawn

assets/spell/smoke.trickfilm

@@ -0,0 +1,7 @@
+[
+ (
+ name: "main",
+ keyframes: KeyframesRange((start: 0, end: 12)),
+ duration: 1.0,
+ ),
+]

src/assets.rs

@@ -108,6 +108,11 @@ pub struct GameAssets {
  pub demon_boss_explosion2: Handle<TextureAtlas>,
  #[asset(paths("spell/explosion2.trickfilm#main"), collection(typed))]
  pub demon_boss_explosion2_animations: Vec<Handle<AnimationClip2D>>,
+ #[asset(texture_atlas(tile_size_x = 64.0, tile_size_y = 64.0, columns = 12, rows = 1))]
+ #[asset(path = "spell/smoke.png")]
+ pub demon_boss_smoke: Handle<TextureAtlas>,
+ #[asset(paths("spell/smoke.trickfilm#main"), collection(typed))]
+ pub demon_boss_smoke_animations: Vec<Handle<AnimationClip2D>>,
 
  // --- MAP ---
  #[asset(path = "map/level.ldtk")]

src/audio/bgm.rs

@@ -3,7 +3,10 @@ use std::time::Duration;
 use bevy::prelude::*;
 use bevy_kira_audio::prelude::*;
 
-use crate::{item::statue::StatueUnlockedDelayed, GameAssets, GameState};
+use crate::{
+ item::{platform::TriggerFinalAct, statue::StatueUnlockedDelayed},
+ GameAssets, GameState,
+};
 
 use super::GameAudio;
 
@@ -38,6 +41,31 @@ fn play_bgm(
  commands.spawn(Bgm { handle });
 }
 
+fn play_boss_bgm(
+ mut commands: Commands,
+ assets: Res<GameAssets>,
+ audio: Res<Audio>,
+ game_audio: Res<GameAudio>,
+ mut ev_trigger_final_act: EventReader<TriggerFinalAct>,
+) {
+ if ev_trigger_final_act.is_empty() {
+ return;
+ }
+ ev_trigger_final_act.clear();
+
+ let volume = game_audio.main_volume * BGM_VOLUME;
+ let handle = audio
+ .play(assets.bgm_boss.clone())
+ .fade_in(AudioTween::new(
+ Duration::from_secs_f32(3.0),
+ AudioEasing::InPowi(3),
+ ))
+ .with_volume(volume)
+ .looped()
+ .handle();
+ commands.spawn(Bgm { handle });
+}
+
 fn update_bgm_volumes(
  game_audio: Res<GameAudio>,
  mut audio_instances: ResMut<Assets<AudioInstance>>,
@@ -104,6 +132,25 @@ fn unmute_bgms(
  }
 }
 
+fn despawn_normal_bgm(
+ mut commands: Commands,
+ mut audio_instances: ResMut<Assets<AudioInstance>>,
+ q_bgms: Query<(Entity, &Bgm)>,
+ mut ev_trigger_final_act: EventReader<TriggerFinalAct>,
+) {
+ if ev_trigger_final_act.is_empty() {
+ return;
+ }
+ ev_trigger_final_act.clear();
+
+ for (entity, bgm) in &q_bgms {
+ if let Some(instance) = audio_instances.get_mut(bgm.handle.clone()) {
+ instance.stop(AudioTween::default());
+ }
+ commands.entity(entity).despawn_recursive();
+ }
+}
+
 pub struct BgmPlugin;
 
 impl Plugin for BgmPlugin {
@@ -112,9 +159,11 @@ impl Plugin for BgmPlugin {
  .add_systems(
  Update,
  (
+ play_boss_bgm.run_if(in_state(GameState::Gaming)),
  update_bgm_volumes.run_if(in_state(GameState::GameOver)),
  mute_bgms.after(update_bgm_volumes),
  unmute_bgms,
+ despawn_normal_bgm,
  ),
  );
  }

src/enemy/demon_boss/spawn.rs

@@ -16,7 +16,7 @@ use super::{
 };
 
 const SCALE: f32 = 1.5;
-const SPAWN_POS: Vec3 = Vec3::new(250.0, 0.0, 0.0);
+const SPAWN_POS: Vec3 = Vec3::new(200.0, 0.0, 0.0);
 
 #[derive(Component)]
 struct Shadow;
@@ -25,11 +25,30 @@ struct DemonCollider;
 
 #[derive(Component, Deref, DerefMut)]
 struct SpawnDelay(Timer);
+#[derive(Component)]
+struct Smoke;
+
+fn spawn_smokes(commands: &mut Commands, assets: &Res<GameAssets>, pos: Vec3) {
+ let mut animator = AnimationPlayer2D::default();
+ animator.play(assets.demon_boss_smoke_animations[0].clone());
+
+ commands.spawn((
+ Smoke,
+ animator,
+ YSort(1.0),
+ SpriteSheetBundle {
+ texture_atlas: assets.demon_boss_smoke.clone(),
+ transform: Transform::from_translation(pos).with_scale(Vec3::splat(5.0)),
+ ..default()
+ },
+ ));
+}
 
 fn spawn_demon_boss(
  mut commands: Commands,
  assets: Res<GameAssets>,
  time: Res<Time>,
+ q_smoke: Query<Entity, (With<Smoke>, Without<SpawnDelay>)>,
  mut q_delay: Query<(Entity, &mut SpawnDelay)>,
 ) {
  let (entity, mut delay) = match q_delay.get_single_mut() {
@@ -43,6 +62,13 @@ fn spawn_demon_boss(
  }
  commands.entity(entity).despawn_recursive();
 
+ let pos = PLAYER_SPAWN_POS + SPAWN_POS;
+ if q_smoke.is_empty() {
+ spawn_smokes(&mut commands, &assets, pos);
+ commands.spawn(SpawnDelay(Timer::from_seconds(0.2, TimerMode::Once)));
+ return;
+ }
+
  let mut animator = AnimationPlayer2D::default();
  animator
  .play(assets.enemy_boss_animations[0].clone())
@@ -83,8 +109,7 @@ fn spawn_demon_boss(
  YSort(36.0 * SCALE * TRANSLATION_TO_PIXEL),
  SpriteSheetBundle {
  texture_atlas: assets.enemy_boss.clone(),
- transform: Transform::from_translation(PLAYER_SPAWN_POS + SPAWN_POS)
- .with_scale(Vec3::splat(SCALE)),
+ transform: Transform::from_translation(pos).with_scale(Vec3::splat(SCALE)),
  ..default()
  },
  ))
@@ -100,7 +125,7 @@ fn spawn_demon_boss_delay(
  }
  ev_trigger_final_act.clear();
 
- commands.spawn(SpawnDelay(Timer::from_seconds(3.5, TimerMode::Once)));
+ commands.spawn(SpawnDelay(Timer::from_seconds(5.0, TimerMode::Once)));
 }
 
 fn despawn_demon_boss(

src/item/platform.rs

@@ -185,8 +185,8 @@ fn trigger_final_act(
  CollisionEvent::Stopped(_, _, _) => continue,
  };
 
- if !(&player.collider_entity == source && &item_entity == target)
- && !(&player.collider_entity == target && &item_entity == source)
+ if !(&player.collider_entity == source && &item_entity == target
+ || &player.collider_entity == target && &item_entity == source)
  {
  continue;
  }