# Objective

Send `SceneInstanceReady` only once per scene.

## Solution

I assume that this was not intentional.
So I just changed it to only be sent once per scene.

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## Changelog

### Fixed
- Fixed `SceneInstanceReady` being emitted for every `Entity` in a
scene.

# Objective

Send `SceneInstanceReady` only once per scene.

## Solution

I assume that this was not intentional.
So I just changed it to only be sent once per scene.

---

## Changelog

### Fixed
- Fixed `SceneInstanceReady` being emitted for every `Entity` in a
scene.

# Objective

- Emit an event regardless of scene type (`Scene` and `DynamicScene`).
- Also send the `InstanceId` along.

Follow-up to #11002.
Fixes #2218.

## Solution

- Send `SceneInstanceReady` regardless of scene type.
- Make `SceneInstanceReady::parent` `Option`al.
- Add `SceneInstanceReady::id`.

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## Changelog

### Changed

- `SceneInstanceReady` is now sent for `Scene` as well.
`SceneInstanceReady::parent` is an `Option` and
`SceneInstanceReady::id`, an `InstanceId`, is added to identify the
corresponding `Scene`.

## Migration Guide

- `SceneInstanceReady { parent: Entity }` is now `SceneInstanceReady {
id: InstanceId, parent: Option<Entity> }`.