Mathias Agopian 3f58c3b57d Implement batch callback system for scene cache incremental updates. (#9935) ...

* Implement batch callback system for scene cache incremental updates.

This change adds a batch callback mechanism to track changes in component
managers and the entity manager, avoiding full cache rebuilds in the
future scene cache implementation.

1. SingleInstanceComponentManager:
- Added SingleInstanceComponentManagerBase to handle callbacks without
  template bloat.
- Implemented batch delivery using Slice<const Entity> and a fixed-size
  array of 16 for dirty entities to avoid heap allocations.
- Added compile-time option for sorted insertion (default to linear).

2. Manager Integration:
- RenderableManager: Added notifications to setters.
- LightManager: Added notifications to setters
- TransformManager: Handled transactions by deferring notifications
  until commit, and supported hierarchical updates in children.

3. EntityManager:
- Added a new batching callback API for entity destruction.
- Used std::function for callbacks to allow thread-safe copying of the
  callback list outside the lock.
- Simple accumulation in loop and flush when full, no bypass.

4. Tests:
- Added formal unit tests for all managers and entity manager callbacks.

2026-04-24 17:07:44 -07:00

5.8 KiB

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