bevy/examples/3d/update_gltf_scene.rs
François Mockers 5559632977
glTF labels: add enum to avoid misspelling and keep up-to-date list documented (#13586)
# Objective

- Followup to #13548
- It added a list of all possible labels to documentation. This seems
hard to keep up and doesn't stop people from making spelling mistake

## Solution

- Add an enum that can create all the labels possible, and encourage its
use rather than manually typed labels

---------

Co-authored-by: Alice Cecile <alice.i.cecile@gmail.com>
Co-authored-by: Rob Parrett <robparrett@gmail.com>
2024-05-31 23:25:57 +00:00

79 lines
2.7 KiB
Rust

//! Update a scene from a glTF file, either by spawning the scene as a child of another entity,
//! or by accessing the entities of the scene.
use bevy::{pbr::DirectionalLightShadowMap, prelude::*};
fn main() {
App::new()
.insert_resource(DirectionalLightShadowMap { size: 4096 })
.add_plugins(DefaultPlugins)
.add_systems(Startup, setup)
.add_systems(Update, move_scene_entities)
.run();
}
#[derive(Component)]
struct MovedScene;
fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
commands.spawn(DirectionalLightBundle {
transform: Transform::from_xyz(4.0, 25.0, 8.0).looking_at(Vec3::ZERO, Vec3::Y),
directional_light: DirectionalLight {
shadows_enabled: true,
..default()
},
..default()
});
commands.spawn((
Camera3dBundle {
transform: Transform::from_xyz(-0.5, 0.9, 1.5)
.looking_at(Vec3::new(-0.5, 0.3, 0.0), Vec3::Y),
..default()
},
EnvironmentMapLight {
diffuse_map: asset_server.load("environment_maps/pisa_diffuse_rgb9e5_zstd.ktx2"),
specular_map: asset_server.load("environment_maps/pisa_specular_rgb9e5_zstd.ktx2"),
intensity: 150.0,
},
));
// Spawn the scene as a child of this entity at the given transform
commands.spawn(SceneBundle {
transform: Transform::from_xyz(-1.0, 0.0, 0.0),
scene: asset_server
.load(GltfAssetLabel::Scene(0).from_asset("models/FlightHelmet/FlightHelmet.gltf")),
..default()
});
// Spawn a second scene, and add a tag component to be able to target it later
commands.spawn((
SceneBundle {
scene: asset_server
.load(GltfAssetLabel::Scene(0).from_asset("models/FlightHelmet/FlightHelmet.gltf")),
..default()
},
MovedScene,
));
}
// This system will move all entities that are descendants of MovedScene (which will be all entities spawned in the scene)
fn move_scene_entities(
time: Res<Time>,
moved_scene: Query<Entity, With<MovedScene>>,
children: Query<&Children>,
mut transforms: Query<&mut Transform>,
) {
for moved_scene_entity in &moved_scene {
let mut offset = 0.;
for entity in children.iter_descendants(moved_scene_entity) {
if let Ok(mut transform) = transforms.get_mut(entity) {
transform.translation = Vec3::new(
offset * time.elapsed_seconds().sin() / 20.,
0.,
time.elapsed_seconds().cos() / 20.,
);
offset += 0.5;
}
}
}
}