460 lines
17 KiB
Rust
460 lines
17 KiB
Rust
use crate::{actor, nature, settings};
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use bevy::prelude::*;
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use bevy::render::render_resource::{AsBindGroup, ShaderRef};
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use bevy::math::{DVec3, I64Vec3};
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use bevy::scene::{InstanceId, SceneInstance};
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use bevy_xpbd_3d::prelude::*;
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use bevy_xpbd_3d::plugins::sync::SyncConfig;
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use std::collections::HashMap;
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use std::f32::consts::PI;
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use fastrand;
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const ASTEROID_UPDATE_INTERVAL: f32 = 0.1; // seconds
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const ASTEROID_SIZE_FACTOR: f32 = 10.0;
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const RING_THICKNESS: f64 = 8.0e6;
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const STARS_MAX_MAGNITUDE: f32 = 5.5;
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const CENTER_WORLD_ON_PLAYER: bool = true;
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const ASTEROID_SPAWN_STEP: f64 = 500.0;
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const ASTEROID_VIEW_RADIUS: f64 = 3000.0;
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const ASSET_ASTEROID1: &str = "models/asteroid.glb#Scene0";
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const ASSET_ASTEROID2: &str = "models/asteroid2.glb#Scene0";
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pub fn asset_name_to_path(name: &str) -> &'static str {
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match name {
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"suit" => "models/suit.glb#Scene0",
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"asteroid1" => ASSET_ASTEROID1,
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"asteroid2" => ASSET_ASTEROID2,
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"moonlet" => "models/moonlet.glb#Scene0",
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"monolith" => "models/monolith_neon.glb#Scene0",
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"lightorb" => "models/lightorb.glb#Scene0",
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"MeteorAceGT" => "models/MeteorAceGT.glb#Scene0",
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"satellite" => "models/satellite.glb#Scene0",
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"pizzeria" => "models/pizzeria2.glb#Scene0",
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"pizzasign" => "models/pizzasign.glb#Scene0",
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_ => "models/error.glb#Scene0",
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}
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}
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pub struct WorldPlugin;
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impl Plugin for WorldPlugin {
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fn build(&self, app: &mut App) {
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app.add_systems(Startup, setup);
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app.add_systems(Update, handle_cheats);
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app.add_systems(PostUpdate, handle_despawn);
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app.add_systems(Update, spawn_despawn_asteroids);
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app.add_plugins(PhysicsPlugins::default());
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app.add_plugins(MaterialPlugin::<RingMaterial>::default());
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//app.add_plugins(PhysicsDebugPlugin::default());
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app.insert_resource(Gravity(DVec3::splat(0.0)));
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app.insert_resource(AsteroidUpdateTimer(
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Timer::from_seconds(ASTEROID_UPDATE_INTERVAL, TimerMode::Repeating)));
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app.insert_resource(AsteroidDatabase(Vec::new()));
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app.insert_resource(ActiveAsteroids(HashMap::new()));
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app.add_event::<DespawnEvent>();
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if CENTER_WORLD_ON_PLAYER {
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// Disable bevy_xpbd's position->transform sync function
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app.insert_resource(SyncConfig {
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position_to_transform: false,
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transform_to_position: false,
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});
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// Add own position->transform sync function
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app.add_systems(PreUpdate, position_to_transform);
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}
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}
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}
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#[derive(Resource)] struct AsteroidUpdateTimer(Timer);
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#[derive(Resource)] struct AsteroidDatabase(Vec<AsteroidData>);
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#[derive(Resource)] struct ActiveAsteroids(HashMap<I64Vec3, AsteroidData>);
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#[derive(Component)] struct Asteroid;
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#[derive(Component)] pub struct DespawnOnPlayerDeath;
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struct AsteroidData {
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entity: Entity,
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//viewdistance: f64,
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}
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#[derive(Event)]
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pub struct DespawnEvent {
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entity: Entity,
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sceneinstance: InstanceId,
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origin: I64Vec3,
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}
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#[derive(Asset, TypePath, AsBindGroup, Debug, Clone)]
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pub struct RingMaterial {
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alpha_mode: AlphaMode,
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#[uniform(0)]
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ring_radius: f32,
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#[uniform(1)]
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jupiter_radius: f32,
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}
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impl Material for RingMaterial {
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fn fragment_shader() -> ShaderRef {
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"shaders/jupiters_rings.wgsl".into()
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}
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fn alpha_mode(&self) -> AlphaMode {
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self.alpha_mode
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}
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}
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#[derive(Component)]
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pub struct Star;
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pub 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<StandardMaterial>>,
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mut materials_custom: ResMut<Assets<RingMaterial>>,
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) {
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// Generate starmap
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let sphere_handle = meshes.add(Sphere::new(1.0));
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let mut starcount = 0;
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for star in nature::STARS {
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let mag = star[3];
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if mag > STARS_MAX_MAGNITUDE {
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continue;
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}
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let scale_color = {|color: f32|
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if mag < -20.0 {
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color * 13.0f32 // Sun
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} else {
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color * (0.0659663 * mag * mag - 1.09862 * mag + 4.3)
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}
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};
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let scale_size = {|mag: f32|
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if mag < -20.0 {
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40000.0f32 // Sun
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} else {
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1000.0 * (0.230299 * mag * mag - 3.09013 * mag + 15.1782)
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} * 100.0
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};
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let (r, g, b) = nature::star_color_index_to_rgb(star[4]);
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let star_color_handle = materials.add(StandardMaterial {
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base_color: Color::rgb(scale_color(r), scale_color(g), scale_color(b)),
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unlit: true,
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..default()
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});
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let dist = 1e9;
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commands.spawn((
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Star,
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PbrBundle {
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mesh: sphere_handle.clone(),
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material: star_color_handle.clone(),
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transform: Transform::from_xyz(
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dist * star[0],
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dist * star[1],
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dist * star[2],
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)
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.with_scale(Vec3::splat(scale_size(mag))),
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..default()
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}
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));
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starcount += 1;
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}
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info!("Generated {starcount} stars");
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// Add shaded ring
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let ring_radius = 229_000_000.0;
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let jupiter_radius = 71_492_000.0;
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commands.spawn((
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MaterialMeshBundle {
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mesh: meshes.add(Mesh::from(Cylinder::new(ring_radius, 1.0))),
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material: materials_custom.add(RingMaterial {
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alpha_mode: AlphaMode::Blend,
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ring_radius: ring_radius,
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jupiter_radius: jupiter_radius,
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}),
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..default()
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},
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Position::from_xyz(0.0, 0.0, 0.0),
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Rotation::from(Quat::IDENTITY),
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//Rotation::from(Quat::from_rotation_x(-0.3f32.to_radians())),
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));
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}
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fn spawn_despawn_asteroids(
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time: Res<Time>,
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mut timer: ResMut<AsteroidUpdateTimer>,
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mut commands: Commands,
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q_player: Query<&Position, With<actor::PlayerCamera>>,
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mut ew_despawn: EventWriter<DespawnEvent>,
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mut db: ResMut<ActiveAsteroids>,
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asset_server: Res<AssetServer>,
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mut q_asteroid: Query<(Entity, &SceneInstance), With<Asteroid>>,
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mut last_player_cell: Local<I64Vec3>,
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) {
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if !timer.0.tick(time.delta()).just_finished() || q_player.is_empty() {
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//if q_player.is_empty() {
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return;
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}
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let player = q_player.get_single().unwrap();
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let player_cell = I64Vec3::new(
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(player.x / ASTEROID_SPAWN_STEP).round() as i64,
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(player.y / ASTEROID_SPAWN_STEP).round() as i64,
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(player.z / ASTEROID_SPAWN_STEP).round() as i64,
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);
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if *last_player_cell == player_cell {
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return;
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}
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*last_player_cell = player_cell;
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// Parameters
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let view_radius: f64 = ASTEROID_VIEW_RADIUS;
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let step: f64 = ASTEROID_SPAWN_STEP;
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let stepmax: i64 = (view_radius / step) as i64;
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// Despawn far asteroids
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let x_min = player_cell.x - stepmax;
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let x_max = player_cell.x + stepmax;
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let y_min = player_cell.y - stepmax;
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let y_max = player_cell.y + stepmax;
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let z_min = player_cell.z - stepmax;
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let z_max = player_cell.z + stepmax;
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for (origin, asteroid) in db.0.iter() {
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if origin.x < x_min || origin.x > x_max
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|| origin.y < y_min || origin.y > y_max
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|| origin.z < z_min || origin.z > z_max
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{
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let mut despawning_worked = false;
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for (ent, sceneinstance) in &mut q_asteroid {
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if ent == asteroid.entity {
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ew_despawn.send(DespawnEvent {
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entity: asteroid.entity,
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sceneinstance: **sceneinstance,
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origin: origin.clone(),
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});
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despawning_worked = true;
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break;
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}
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}
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if !despawning_worked {
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error!("Couldn't despawn asteroid:");
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dbg!(origin);
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}
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}
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}
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// Density based on the radius alone
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let radius_plane = (player.x * player.x + player.z * player.z).sqrt();
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let density_r = nature::ring_density((radius_plane / 1e6) as f32);
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if density_r < 0.001 {
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return;
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}
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// Density based on radius and the vertical distance to the ring
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let normalized_distance = player.y / (RING_THICKNESS / 2.0);
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let density = density_r * (-4.0 * normalized_distance.powf(2.0)).exp() as f32;
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if density < 0.001 {
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return;
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}
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let mut rng = fastrand::Rng::new();
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for x in -stepmax..=stepmax {
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for y in -stepmax..=stepmax {
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for z in -stepmax..=stepmax {
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let origin = I64Vec3::new(
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player_cell.x + x as i64,
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player_cell.y + y as i64,
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player_cell.z + z as i64,
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);
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if db.0.contains_key(&origin) {
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// already in db, nothing to do
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continue;
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}
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// Get a seed based on all of the origin axes
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// Probably there's a faster way
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rng.seed(origin.x as u64);
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let seed = rng.u64(0..u64::MAX).wrapping_add(origin.y as u64);
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rng.seed(seed);
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let seed = rng.u64(0..u64::MAX).wrapping_add(origin.z as u64);
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rng.seed(seed);
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let rand_s = rng.f32();
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let size_raw: f32 = (rand_s + 1e-4).powf(-0.5) as f32; // -> between ~1 and 100
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let size_density = size_raw * density;
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if size_density < 0.3 {
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continue;
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}
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if size_raw < 20.0 {
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let dist = player_cell.as_dvec3().distance(origin.as_dvec3());
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if dist > 6.0 {
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continue;
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}
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}
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let size: f32 = ASTEROID_SIZE_FACTOR * size_density;
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let rand_x = rng.f64();
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let rand_y = rng.f64();
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let rand_z = rng.f64();
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let rand_c = rng.bool();
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let class = if rand_c { 0 } else { 1 };
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//let max_viewdist = ASTEROID_VIEW_RADIUS / ASTEROID_SPAWN_STEP;
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let wobble = ASTEROID_SPAWN_STEP * 0.5;
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let pos = DVec3::new(
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origin.x as f64 * ASTEROID_SPAWN_STEP + wobble * rand_x * 2.0 - 1.0,
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origin.y as f64 * ASTEROID_SPAWN_STEP + wobble * rand_y * 2.0 - 1.0,
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origin.z as f64 * ASTEROID_SPAWN_STEP + wobble * rand_z * 2.0 - 1.0,
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);
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// Spawn
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let mut entity_commands = commands.spawn((
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actor::Actor::default(),
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RigidBody::Dynamic,
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AngularVelocity(DVec3::new(0.1, 0.1, 0.03)),
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LinearVelocity(DVec3::new(0.0, 0.0, 0.35)),
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Collider::sphere(1.0),
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Rotation::from(Quat::from_rotation_y(-PI / 3.)),
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Position::new(pos),
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Asteroid,
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));
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let asset = match class {
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0 => ASSET_ASTEROID1,
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_ => ASSET_ASTEROID2,
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};
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entity_commands.insert(SceneBundle {
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scene: asset_server.load(asset),
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transform: Transform {
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scale: Vec3::splat(size),
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..default()
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},
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..default()
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});
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db.0.insert(origin, AsteroidData {
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entity: entity_commands.id(),
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//viewdistance: 99999999.0,
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});
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}
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}
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}
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}
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fn handle_despawn(
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mut commands: Commands,
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mut er_despawn: EventReader<DespawnEvent>,
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mut db: ResMut<ActiveAsteroids>,
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mut scene_spawner: ResMut<SceneSpawner>,
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) {
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for despawn in er_despawn.read() {
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commands.entity(despawn.entity).despawn();
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scene_spawner.despawn_instance(despawn.sceneinstance);
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db.0.remove(&despawn.origin);
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}
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}
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fn handle_cheats(
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key_input: Res<ButtonInput<KeyCode>>,
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mut q_player: Query<(&Transform, &mut Position, &mut LinearVelocity), With<actor::PlayerCamera>>,
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mut q_life: Query<(&mut actor::LifeForm, ), With<actor::Player>>,
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mut ew_playerdies: EventWriter<actor::PlayerDiesEvent>,
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settings: ResMut<settings::Settings>,
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) {
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if q_player.is_empty() || q_life.is_empty() {
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return;
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}
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let (trans, mut pos, mut v) = q_player.get_single_mut().unwrap();
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let boost = if key_input.pressed(KeyCode::ShiftLeft) {
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1e6
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} else {
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1e3
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};
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if key_input.just_pressed(settings.key_cheat_stop) {
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v.0 = DVec3::ZERO;
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}
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if key_input.pressed(settings.key_cheat_speed) {
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v.0 += DVec3::from(trans.rotation * Vec3::new(0.0, 0.0, boost));
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}
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if key_input.pressed(settings.key_cheat_speed_backward) {
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v.0 += DVec3::from(trans.rotation * Vec3::new(0.0, 0.0, -boost));
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}
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if !settings.dev_mode {
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return;
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}
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let (mut lifeform, ) = q_life.get_single_mut().unwrap();
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if key_input.just_pressed(settings.key_cheat_pizza) {
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pos.0 = DVec3::new(-303370.0, 0.0, -500000.0);
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}
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if key_input.just_pressed(settings.key_cheat_farview1) {
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pos.0 = DVec3::new(-1000.0e6, 1000.0e6, -500.0e6);
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}
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if key_input.just_pressed(settings.key_cheat_farview2) {
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pos.0 = DVec3::new(1000.0e6, 1000.0e6, -500.0e6);
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}
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if key_input.pressed(settings.key_cheat_adrenaline_zero) {
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lifeform.adrenaline = 0.0;
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}
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if key_input.pressed(settings.key_cheat_adrenaline_mid) {
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lifeform.adrenaline = 0.5;
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}
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if key_input.pressed(settings.key_cheat_adrenaline_max) {
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lifeform.adrenaline = 1.0;
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}
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if key_input.just_pressed(settings.key_cheat_die) {
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ew_playerdies.send(actor::PlayerDiesEvent);
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}
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}
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// A variant of bevy_xpbd_3d::plugins::position_to_transform that adjusts
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// the rendering position to center entities at the player camera.
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// This avoids rendering glitches when very far away from the origin.
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pub fn position_to_transform(
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q_player: Query<&Position, With<actor::PlayerCamera>>,
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mut q_trans: Query<(&'static mut Transform, &'static Position, &'static Rotation, Option<&'static Parent>)>,
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parents: Query<(&'static GlobalTransform, Option<&'static Position>, Option<&'static Rotation>), With<Children>>,
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) {
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if let Ok(player_pos) = q_player.get_single() {
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for (mut transform, pos, rot, parent) in &mut q_trans {
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if let Some(parent) = parent {
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if let Ok((parent_transform, parent_pos, parent_rot)) = parents.get(**parent) {
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// Compute the global transform of the parent using its Position and Rotation
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let parent_transform = parent_transform.compute_transform();
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let parent_pos = parent_pos.map_or(parent_transform.translation, |pos| {
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pos.as_vec3()
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// NOTE: I commented out this because it turns a vec3 to a vec4,
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// and I don't understand why bevy_xpbd would do that.
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//.extend(parent_transform.translation.z)
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});
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let parent_rot = parent_rot.map_or(parent_transform.rotation, |rot| {
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rot.as_quat()
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});
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let parent_scale = parent_transform.scale;
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let parent_transform = Transform::from_translation(parent_pos)
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.with_rotation(parent_rot)
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.with_scale(parent_scale);
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// The new local transform of the child body,
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// computed from the its global transform and its parents global transform
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let new_transform = GlobalTransform::from(
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Transform::from_translation(
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pos.as_vec3()
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// NOTE: I commented out this because it turns a vec3 to a vec4,
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// and I don't understand why bevy_xpbd would do that.
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//.extend(parent_pos.z + transform.translation.z * parent_scale.z),
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)
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.with_rotation(rot.as_quat()),
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)
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.reparented_to(&GlobalTransform::from(parent_transform));
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transform.translation = new_transform.translation;
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transform.rotation = new_transform.rotation;
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}
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} else {
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transform.translation = Vec3::new(
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(pos.x - player_pos.x) as f32,
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(pos.y - player_pos.y) as f32,
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(pos.z - player_pos.z) as f32,
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);
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transform.rotation = rot.as_quat();
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}
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}
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}
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}
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