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use bevy::{prelude::*, window::WindowResolution};
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use bevy_rapier2d::prelude::*;
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use std::f32::consts::PI;
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mod physics;
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mod player;
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mod screen_edge;
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mod sound;
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mod ui;
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use screen_edge::{EdgeBehaviour, ScreenEdge};
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const WINDOW_WIDTH: f32 = 1920.;
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const WINDOW_HEIGHT: f32 = 1200.;
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const WINDOW_WRAP_OVERSHOOT: f32 = player::PLAYER_LENGTH.max(player::PLAYER_WIDTH) / 2.;
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const GAMEPAD_STICK_DEADZONE: f32 = 0.1; // consider using the built-in support
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const GAMEPAD_TRIGGER_DEADZONE: f32 = 0.1;
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const ENEMY_STARTING_POSITION: Vec3 = Vec3::new(600.0, 350.0, 1.0);
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const ENEMY_STARTING_ANGLE_R: f32 = PI + 0.6;
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const ENEMY_WIDTH: f32 = 60.;
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const ENEMY_ACCELERATION: f32 = 400.;
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const ENEMY_STARTING_SPEED: f32 = 200.;
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const ENEMY_STARTING_FIRE_RATE_PS: f32 = 1.;
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const ENEMY_DAMPING: f32 = 1.5;
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const BACKGROUND_COLOR: Color = Color::srgb(0.02, 0.018, 0.025);
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const ENEMY_COLOR: Color = Color::srgb(1.0, 0.5, 0.5);
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fn main() {
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let sound_enabled = std::env::args_os().skip(1).next().is_some();
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let window_plugin = WindowPlugin {
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primary_window: Some(Window {
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title: "tähetriiv".to_string(),
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resolution: WindowResolution::new(WINDOW_WIDTH, WINDOW_HEIGHT),
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..default()
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}),
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..default()
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};
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let mut app = App::new();
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app.add_plugins(DefaultPlugins.set(window_plugin));
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app.add_plugins(RapierPhysicsPlugin::<NoUserData>::pixels_per_meter(100.0));
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app.add_plugins(RapierDebugRenderPlugin::default());
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app.insert_resource(ClearColor(BACKGROUND_COLOR));
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app.init_resource::<player::PlayerBulletAssets>();
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app.add_event::<sound::SoundEvent>();
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app.add_systems(Startup, (setup, player::setup, ui::setup, physics::setup));
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app.add_systems(
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FixedUpdate,
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(
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screen_edge::check_edges,
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physics::check_bullet_collisions,
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sound::play_sound,
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)
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.chain(),
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);
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app.add_systems(
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Update,
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(
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player::handle_player_movement,
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player::handle_player_fire,
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ui::update_player_health_ui,
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),
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);
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if sound_enabled {
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app.add_systems(Startup, sound::setup);
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}
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app.run();
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}
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#[derive(Component)]
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struct Health {
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current: f32,
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max: f32,
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}
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impl Health {
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fn new(value: f32) -> Self {
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Self {
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current: value,
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max: value,
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}
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}
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}
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#[derive(Component)]
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struct FireRate(f32);
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#[derive(Component)]
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struct FireCooldown(Timer);
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#[derive(Component)]
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struct Enemy;
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fn setup(
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mut commands: Commands,
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mut meshes: ResMut<Assets<Mesh>>,
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mut materials: ResMut<Assets<ColorMaterial>>,
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) {
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commands.spawn(Camera2d);
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commands
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.spawn(Enemy)
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.insert(Mesh2d(meshes.add(Triangle2d::default())))
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.insert(MeshMaterial2d(materials.add(ENEMY_COLOR)))
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.insert(
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Transform::from_translation(ENEMY_STARTING_POSITION)
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.with_scale(Vec2::splat(ENEMY_WIDTH).extend(1.))
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.with_rotation(Quat::from_rotation_z(ENEMY_STARTING_ANGLE_R - PI / 2.)),
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)
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.insert(Velocity {
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linvel: Vec2::from_angle(ENEMY_STARTING_ANGLE_R) * ENEMY_STARTING_SPEED,
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angvel: 0.0,
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})
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.insert(RigidBody::Dynamic)
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.insert(Sleeping::disabled())
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.insert(Ccd::enabled())
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.insert(Collider::triangle(
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Vec2::Y * 0.5,
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Vec2::new(-0.5, -0.5),
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Vec2::new(0.5, -0.5),
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))
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.insert(CollisionGroups::new(
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Group::GROUP_1,
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Group::GROUP_10 | Group::GROUP_11,
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))
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.insert(ActiveEvents::COLLISION_EVENTS)
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.insert(LockedAxes::ROTATION_LOCKED)
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.insert(Damping {
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linear_damping: ENEMY_DAMPING,
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angular_damping: 0.0,
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})
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.insert(ScreenEdge(EdgeBehaviour::Wraps))
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.insert(FireRate(ENEMY_STARTING_FIRE_RATE_PS))
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.insert(FireCooldown(Timer::from_seconds(10., TimerMode::Once)))
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.insert(Health::new(500.));
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}
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