docs/bevy/examples/asset/hot_asset_reloading.rs 1.3 K · 37 lines · raw · history

1 //! Hot reloading allows you to modify assets files to be immediately reloaded while your game is
2 //! running. This lets you immediately see the results of your changes without restarting the game.
3 //! This example illustrates hot reloading mesh changes.
4 //!
5 //! Note that hot asset reloading requires the [`AssetWatcher`](bevy::asset::io::AssetWatcher) to be enabled
6 //! for your current platform. For desktop platforms, enable the `file_watcher` cargo feature.
7
8 use bevy::prelude::*;
9
10 fn main() {
11 App::new()
12 .add_plugins(DefaultPlugins)
13 .add_systems(Startup, setup)
14 .run();
15 }
16
17 fn setup(mut commands: Commands, asset_server: Res<AssetServer>) {
18 // Load our mesh:
19 let scene_handle =
20 asset_server.load(GltfAssetLabel::Scene(0).from_asset("models/torus/torus.gltf"));
21
22 // Any changes to the mesh will be reloaded automatically! Try making a change to torus.gltf.
23 // You should see the changes immediately show up in your app.
24
25 // mesh
26 commands.spawn(WorldAssetRoot(scene_handle));
27 // light
28 commands.spawn((
29 DirectionalLight::default(),
30 Transform::from_xyz(4.0, 5.0, 4.0).looking_at(Vec3::ZERO, Vec3::Y),
31 ));
32 // camera
33 commands.spawn((
34 Camera3d::default(),
35 Transform::from_xyz(2.0, 2.0, 6.0).looking_at(Vec3::ZERO, Vec3::Y),
36 ));
37 }