use bevy::{
    DefaultPlugins,
    app::{App, Startup},
    asset::AssetServer,
    camera::{Camera3d, OrthographicProjection, Projection, ScalingMode},
    ecs::system::{Commands, Res},
    gltf::GltfAssetLabel,
    light::DirectionalLight,
    math::Vec3,
    scene::SceneRoot,
    transform::components::Transform,
};

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

fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
    commands.spawn((
        Camera3d::default(),
        Projection::from(OrthographicProjection {
            scaling_mode: ScalingMode::FixedVertical {
                viewport_height: 10.0,
            },
            ..OrthographicProjection::default_3d()
        }),
        Transform::from_xyz(0.0, 10.0, 0.0).looking_to(Vec3::NEG_Y, Vec3::Z),
    ));

    commands.spawn((
        SceneRoot(asset_server.load(GltfAssetLabel::Scene(0).from_asset("models/animal-dog.glb"))),
        Transform::from_xyz(0.0, 0.0, 0.0),
    ));

    commands.spawn((
        DirectionalLight {
            illuminance: 15000.0,
            ..Default::default()
        },
        Transform::from_xyz(0.0, 0.0, 0.0).looking_to(Vec3::NEG_Y, Vec3::Z),
    ));
}