use bevy::prelude::*;
use bevy_despawn_particles::prelude::*;

#[derive(Component, Default)]
pub struct Marker;

pub struct MyTimer(pub Timer);

impl Default for MyTimer {
    fn default() -> Self {
        Self(Timer::from_seconds(0.5, TimerMode::Once))
    }
}

fn main() {
    App::new()
        .add_plugins(DefaultPlugins)
        .add_plugins(DespawnParticlesPlugin)
        .add_systems(Startup, setup)
        .add_systems(Update, tick)
        .run();
}

fn setup(
    mut commands: Commands,
    asset_server: Res<AssetServer>,
    atlases: ResMut<Assets<TextureAtlasLayout>>,
) {
    commands.spawn(Camera2dBundle::default());
    spawn(commands, atlases, asset_server);
}

fn tick(
    mut timer: Local<MyTimer>,
    time: Res<Time>,
    mut despawn_particles_event_writer: EventWriter<DespawnParticlesEvent>,
    commands: Commands,
    asset_server: Res<AssetServer>,
    marker: Query<Entity, With<Marker>>,
    atlases: ResMut<Assets<TextureAtlasLayout>>,
) {
    timer.0.tick(time.delta());
    if timer.0.just_finished() {
        if let Ok(entity) = marker.get_single() {
            despawn_particles_event_writer.send(
                DespawnParticlesEvent::builder()
                    .with_fade(true)
                    .with_linvel(50.0)
                    .with_angvel(-0.2..0.2)
                    .with_lifetime(1.0)
                    .with_angular_damping(5.0)
                    .with_linear_damping(10.0)
                    .build(entity),
            );
            timer.0 = Timer::from_seconds(1.2, TimerMode::Once);
            timer.0.reset();
        } else {
            spawn(commands, atlases, asset_server);
            timer.0 = Timer::from_seconds(0.5, TimerMode::Once);
        }
    }
}

fn spawn(
    mut commands: Commands,
    mut atlases: ResMut<Assets<TextureAtlasLayout>>,
    asset_server: Res<AssetServer>,
) {
    commands.spawn((
        TextureAtlas {
            layout: atlases.add(TextureAtlasLayout::from_grid(
                UVec2::splat(64),
                1,
                4,
                None,
                None,
            )),
            index: 2,
        },
        SpriteBundle {
            texture: asset_server.load("asteroid_sheet_test.png"),
            ..default()
        },
        Marker,
    ));
}