use bevy::prelude::*;

fn main() {
    App::build()
        .add_resource(Msaa { samples: 4 })
        .add_default_plugins()
        .add_startup_system(setup.system())
        .run();
}

/// set up a simple 3D scene
fn setup(
    mut commands: Commands,
    mut meshes: ResMut<Assets<Mesh>>,
    mut materials: ResMut<Assets<StandardMaterial>>,
) {
    // add entities to the world
    commands
        // plane
        .spawn(PbrComponents {
            mesh: meshes.add(Mesh::from(shape::Plane { size: 10.0 })),
            material: materials.add(Color::rgb(0.1, 0.2, 0.1).into()),
            ..Default::default()
        })
        // cube
        .spawn(PbrComponents {
            mesh: meshes.add(Mesh::from(shape::Cube { size: 1.0 })),
            material: materials.add(Color::rgb(0.5, 0.4, 0.3).into()),
            translation: Translation::new(0.0, 1.0, 0.0),
            ..Default::default()
        })
        // sphere
        .spawn(PbrComponents {
            mesh: meshes.add(Mesh::from(shape::Icosphere { subdivisions: 4, radius: 0.5 })),
            material: materials.add(Color::rgb(0.1, 0.4, 0.8).into()),
            translation: Translation::new(1.5, 1.5, 1.5),
            ..Default::default()
        })
        // light
        .spawn(LightComponents {
            translation: Translation::new(4.0, 8.0, 4.0),
            ..Default::default()
        })
        // camera
        .spawn(Camera3dComponents {
            transform: Transform::new_sync_disabled(Mat4::face_toward(
                Vec3::new(-3.0, 5.0, 8.0),
                Vec3::new(0.0, 0.0, 0.0),
                Vec3::new(0.0, 1.0, 0.0),
            )),
            ..Default::default()
        });
}