c6958b3056
# Objective
- Spawning a scene is handled as a special case with a command `spawn_scene` that takes an handle but doesn't let you specify anything else. This is the only handle that works that way.
- Workaround for this have been to add the `spawn_scene` on `ChildBuilder` to be able to specify transform of parent, or to make the `SceneSpawner` available to be able to select entities from a scene by their instance id
## Solution
Add a bundle
```rust
pub struct SceneBundle {
pub scene: Handle<Scene>,
pub transform: Transform,
pub global_transform: GlobalTransform,
pub instance_id: Option<InstanceId>,
}
```
and instead of
```rust
commands.spawn_scene(asset_server.load("models/FlightHelmet/FlightHelmet.gltf#Scene0"));
```
you can do
```rust
commands.spawn_bundle(SceneBundle {
scene: asset_server.load("models/FlightHelmet/FlightHelmet.gltf#Scene0"),
..Default::default()
});
```
The scene will be spawned as a child of the entity with the `SceneBundle`
~I would like to remove the command `spawn_scene` in favor of this bundle but didn't do it yet to get feedback first~
Co-authored-by: François <8672791+mockersf@users.noreply.github.com>
Co-authored-by: Carter Anderson <mcanders1@gmail.com>
40 lines
1.0 KiB
Rust
40 lines
1.0 KiB
Rust
mod bundle;
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mod dynamic_scene;
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mod scene;
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mod scene_loader;
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mod scene_spawner;
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pub mod serde;
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pub use bundle::*;
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pub use dynamic_scene::*;
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pub use scene::*;
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pub use scene_loader::*;
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pub use scene_spawner::*;
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pub mod prelude {
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#[doc(hidden)]
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pub use crate::{DynamicScene, DynamicSceneBundle, Scene, SceneBundle, SceneSpawner};
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}
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use bevy_app::prelude::*;
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use bevy_asset::AddAsset;
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use bevy_ecs::{schedule::ExclusiveSystemDescriptorCoercion, system::IntoExclusiveSystem};
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#[derive(Default)]
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pub struct ScenePlugin;
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impl Plugin for ScenePlugin {
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fn build(&self, app: &mut App) {
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app.add_asset::<DynamicScene>()
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.add_asset::<Scene>()
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.init_asset_loader::<SceneLoader>()
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.init_resource::<SceneSpawner>()
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.add_system_to_stage(
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CoreStage::PreUpdate,
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scene_spawner_system.exclusive_system().at_end(),
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)
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// Systems `*_bundle_spawner` must run before `scene_spawner_system`
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.add_system_to_stage(CoreStage::PreUpdate, scene_spawner);
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}
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}
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