astraea/src/main.rs

//! A simple 3D scene with light shining over a cube sitting on a plane.

use bevy::prelude::*;
use bevy::render::*;
use bevy::math::*;

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

#[derive(Component)]
struct Star;

fn setup(
    mut commands: Commands,
    mut meshes: ResMut<Assets<Mesh>>,
    mut materials: ResMut<Assets<StandardMaterial>>,
) {
    // plane
    commands.spawn((
        PbrBundle {
            mesh: meshes.add(Plane3d::default().mesh().size(20., 20.)),
            material: materials.add(Color::srgb(0.3, 0.5, 0.3)),
            ..default()
        },
        Star,
    ));

    // light
    commands.spawn(DirectionalLightBundle {
        transform: Transform::from_translation(Vec3::ONE).looking_at(Vec3::ZERO, Vec3::Y),
        ..default()
    });

    // camera
    commands.spawn(Camera3dBundle {
        transform: Transform::from_xyz(15.0, 5.0, 15.0).looking_at(Vec3::ZERO, Vec3::Y),
        ..default()
    });
}


// fn setup(
//     mut commands: Commands,
//     mut meshes: ResMut<Assets<Mesh>>,
//     mut materials: ResMut<Assets<StandardMaterial>>,
// ) {
// 
// 	let star_material = materials.add(Color::WHITE);
// 
// 	let star = meshes.add(Plane3d::new(Vec3::Y, Vec2::splat(1.0)));
// 	
//     // circular base
//     commands.spawn(MaterialMeshBundle {
//         mesh: star,
//         material: star_material.clone(),
//         transform: Transform::from_xyz(0.0, 1.0, 0.0),
//         ..default()
//     });
//     // light
//     commands.spawn((
//         PointLight {
//             shadows_enabled: true,
//             ..default()
//         },
//         Transform::from_xyz(0.0, 0.8, 1.0),
//     ));
//     // camera
//     commands.spawn((
//         Camera3d::default(),
//         Transform::from_xyz(0.0, 0.0, 0.0).looking_at(Vec3::ZERO, Vec3::Y),
//     ));
// }