126 lines
3.4 KiB
Rust
126 lines
3.4 KiB
Rust
use std::{f32::consts::TAU, num::Wrapping, time::Duration};
|
|
|
|
use bevy::{
|
|
prelude::{shape::Capsule, *},
|
|
window::close_on_esc,
|
|
};
|
|
|
|
use bevy_mod_outline::*;
|
|
|
|
#[bevy_main]
|
|
fn main() {
|
|
App::new()
|
|
.insert_resource(Msaa::Sample4)
|
|
.insert_resource(ClearColor(Color::BLACK))
|
|
.add_plugins((DefaultPlugins, OutlinePlugin))
|
|
.add_systems(Startup, setup)
|
|
.add_systems(
|
|
Update,
|
|
(close_on_esc, spawn_objects, move_objects, despawn_objects),
|
|
)
|
|
.run();
|
|
}
|
|
|
|
#[derive(Resource)]
|
|
struct MyAssets {
|
|
mesh: Handle<Mesh>,
|
|
material: Handle<StandardMaterial>,
|
|
}
|
|
|
|
#[derive(Component)]
|
|
struct FlyingObject;
|
|
|
|
fn setup(
|
|
mut commands: Commands,
|
|
mut meshes: ResMut<Assets<Mesh>>,
|
|
mut materials: ResMut<Assets<StandardMaterial>>,
|
|
) {
|
|
commands.insert_resource(MyAssets {
|
|
mesh: meshes.add(
|
|
Capsule {
|
|
radius: 1.0,
|
|
rings: 10,
|
|
depth: 2.0,
|
|
latitudes: 15,
|
|
longitudes: 15,
|
|
..default()
|
|
}
|
|
.into(),
|
|
),
|
|
material: materials.add(Color::BEIGE.into()),
|
|
});
|
|
|
|
// Add light source and camera
|
|
commands.spawn(DirectionalLightBundle {
|
|
directional_light: DirectionalLight {
|
|
illuminance: 750.0,
|
|
..default()
|
|
},
|
|
..default()
|
|
});
|
|
commands.spawn(Camera3dBundle {
|
|
transform: Transform::from_xyz(0.0, 0.0, 50.0).looking_at(Vec3::ZERO, Vec3::Y),
|
|
..default()
|
|
});
|
|
}
|
|
|
|
struct SpawnState(Timer, Wrapping<u64>);
|
|
|
|
impl Default for SpawnState {
|
|
fn default() -> Self {
|
|
let mut timer = Timer::from_seconds(0.75, TimerMode::Repeating);
|
|
timer.tick(timer.duration() - Duration::from_nanos(1));
|
|
Self(timer, Wrapping(0))
|
|
}
|
|
}
|
|
|
|
fn spawn_objects(
|
|
mut commands: Commands,
|
|
mut timer: Local<SpawnState>,
|
|
time: Res<Time>,
|
|
assets: Res<MyAssets>,
|
|
) {
|
|
timer.0.tick(time.delta());
|
|
if timer.0.just_finished() {
|
|
timer.1 *= 6364136223846793005;
|
|
timer.1 += 1442695040888963407;
|
|
let x = ((timer.1 .0 >> 40) as i8 as f32) / 128.0;
|
|
let y = ((timer.1 .0 >> 32) as i8 as f32) / 128.0;
|
|
let b = (timer.1 .0 >> 48) & 1 == 1;
|
|
commands
|
|
.spawn(PbrBundle {
|
|
mesh: assets.mesh.clone(),
|
|
material: assets.material.clone(),
|
|
transform: Transform::from_rotation(Quat::from_axis_angle(
|
|
Vec3::new(1.0, 0.0, 0.0),
|
|
0.25 * TAU,
|
|
))
|
|
.with_translation(Vec3::new(15.0 * x, 15.0 * y, 0.0)),
|
|
..default()
|
|
})
|
|
.insert(FlyingObject)
|
|
.insert(OutlineBundle {
|
|
outline: OutlineVolume {
|
|
visible: true,
|
|
width: if b { 10.0 } else { 5.0 },
|
|
colour: if b { Color::GREEN } else { Color::RED },
|
|
},
|
|
..default()
|
|
});
|
|
}
|
|
}
|
|
|
|
fn move_objects(time: Res<Time>, mut query: Query<&mut Transform, With<FlyingObject>>) {
|
|
for mut t in query.iter_mut() {
|
|
t.translation += Vec3::new(0.0, 0.0, 5.0 * time.delta_seconds());
|
|
}
|
|
}
|
|
|
|
fn despawn_objects(mut commands: Commands, query: Query<(Entity, &Transform), With<FlyingObject>>) {
|
|
for (e, t) in query.iter() {
|
|
if t.translation.z > 51.0 {
|
|
commands.entity(e).despawn();
|
|
}
|
|
}
|
|
}
|