eb51b4c28e
# Objective A step in the migration to required components: scenes! ## Solution As per the [selected proposal](https://hackmd.io/@bevy/required_components/%2FPJtNGVMMQhyM0zIvCJSkbA): - Deprecate `SceneBundle` and `DynamicSceneBundle`. - Add `SceneRoot` and `DynamicSceneRoot` components, which wrap a `Handle<Scene>` and `Handle<DynamicScene>` respectively. ## Migration Guide Asset handles for scenes and dynamic scenes must now be wrapped in the `SceneRoot` and `DynamicSceneRoot` components. Raw handles as components no longer spawn scenes. Additionally, `SceneBundle` and `DynamicSceneBundle` have been deprecated. Instead, use the scene components directly. Previously: ```rust let model_scene = asset_server.load(GltfAssetLabel::Scene(0).from_asset("model.gltf")); commands.spawn(SceneBundle { scene: model_scene, transform: Transform::from_xyz(-4.0, 0.0, -3.0), ..default() }); ``` Now: ```rust let model_scene = asset_server.load(GltfAssetLabel::Scene(0).from_asset("model.gltf")); commands.spawn(( SceneRoot(model_scene), Transform::from_xyz(-4.0, 0.0, -3.0), )); ```
68 lines
2.1 KiB
Rust
68 lines
2.1 KiB
Rust
//! Uses two windows to visualize a 3D model from different angles.
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use bevy::{prelude::*, render::camera::RenderTarget, window::WindowRef};
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fn main() {
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App::new()
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// By default, a primary window gets spawned by `WindowPlugin`, contained in `DefaultPlugins`
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.add_plugins(DefaultPlugins)
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.add_systems(Startup, setup_scene)
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.run();
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}
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fn setup_scene(mut commands: Commands, asset_server: Res<AssetServer>) {
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// add entities to the world
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commands.spawn(SceneRoot(
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asset_server.load(GltfAssetLabel::Scene(0).from_asset("models/torus/torus.gltf")),
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));
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// light
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commands.spawn((
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DirectionalLight::default(),
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Transform::from_xyz(3.0, 3.0, 3.0).looking_at(Vec3::ZERO, Vec3::Y),
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));
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let first_window_camera = commands
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.spawn(Camera3dBundle {
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transform: Transform::from_xyz(0.0, 0.0, 6.0).looking_at(Vec3::ZERO, Vec3::Y),
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..default()
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})
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.id();
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// Spawn a second window
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let second_window = commands
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.spawn(Window {
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title: "Second window".to_owned(),
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..default()
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})
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.id();
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let second_window_camera = commands
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.spawn(Camera3dBundle {
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transform: Transform::from_xyz(6.0, 0.0, 0.0).looking_at(Vec3::ZERO, Vec3::Y),
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camera: Camera {
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target: RenderTarget::Window(WindowRef::Entity(second_window)),
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..default()
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},
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..default()
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})
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.id();
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// Since we are using multiple cameras, we need to specify which camera UI should be rendered to
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commands
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.spawn((NodeBundle::default(), TargetCamera(first_window_camera)))
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.with_children(|parent| {
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parent.spawn(TextBundle::from_section(
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"First window",
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TextStyle::default(),
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));
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});
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commands
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.spawn((NodeBundle::default(), TargetCamera(second_window_camera)))
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.with_children(|parent| {
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parent.spawn(TextBundle::from_section(
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"Second window",
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TextStyle::default(),
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));
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});
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}
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