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

use bevy::prelude::*;
use bevy_openxr::{
    add_xr_plugins, features::handtracking::HandTrackingPlugin, init::OxrInitPlugin,
    reference_space::OxrReferenceSpacePlugin, types::OxrExtensions,
};

#[bevy_main]
fn main() {
    App::new()
        .add_plugins(add_xr_plugins(DefaultPlugins).set(OxrInitPlugin {
            app_info: default(),
            exts: {
                let mut exts = OxrExtensions::default();
                exts.enable_fb_passthrough();
                exts.enable_hand_tracking();
                exts
            },
            blend_modes: default(),
            backends: default(),
            formats: default(),
            resolutions: default(),
            synchronous_pipeline_compilation: default(),
        }))
        .add_plugins(HandTrackingPlugin::default())
        .add_plugins(OxrReferenceSpacePlugin::default())
        .add_plugins(bevy_xr_utils::hand_gizmos::HandGizmosPlugin)
        .add_systems(Startup, setup)
        .insert_resource(ClearColor(Color::NONE))
        .run();
}

/// set up a simple 3D scene
fn setup(
    mut commands: Commands,
    mut meshes: ResMut<Assets<Mesh>>,
    mut materials: ResMut<Assets<StandardMaterial>>,
) {
    // circular base
    commands.spawn(PbrBundle {
        mesh: meshes.add(Circle::new(4.0)),
        material: materials.add(Color::WHITE),
        transform: Transform::from_rotation(Quat::from_rotation_x(-std::f32::consts::FRAC_PI_2)),
        ..default()
    });
    // cube
    commands.spawn(PbrBundle {
        mesh: meshes.add(Cuboid::new(1.0, 1.0, 1.0)),
        material: materials.add(Color::rgb_u8(124, 144, 255)),
        transform: Transform::from_xyz(0.0, 0.5, 0.0),
        ..default()
    });
    // light
    commands.spawn(PointLightBundle {
        point_light: PointLight {
            shadows_enabled: true,
            ..default()
        },
        transform: Transform::from_xyz(4.0, 8.0, 4.0),
        ..default()
    });
}