# Changelog
## 0.2.0 (unreleased)
Engine work that was developed alongside [chaos-rpg](https://github.com/Mattbusel/chaos-rpg) and had not been pushed, plus CI and a new demo.
### Added
- `ProofEngine::run_ui` for UI-driven games (update before draw, UI layer cleared each frame), `render_size`, and `save_frame` for reading the framebuffer back to a BMP.
- HDR scene buffers and a two-pass UI layer (`UiPass::World` painted before post-processing, `UiPass::Hud` painted sharp after it).
- `engine.fx` (`ScreenFx`): shockwaves, flashes, light shafts, floor reflection, heat haze, screen-space lights with shadows.
- Bloom pyramid, FXAA, `render_scale`, motion-trail persistence, camera shake that leaves the HUD still.
- GPU density entities (`init_gpu_density`, `queue_gpu_density_entity`) and particle skinning (`anim::particle_skin`).
- Synthesiser voices on `MathAudioSource`: pitch envelope, second partial, noise, filters, drive, reverb send, start delay; music and effects buses with ducking and a limiter.
- `sky` example: a day cycle lit by the Nishita sky model (`nishita_sky`), the first of the advanced lighting modules used by a demo.
- CI on GitHub Actions: build of every target, library, integration and doc tests on Ubuntu; example builds on Windows and macOS.
### Fixed
- Bloom: each pyramid level had one shared half-resolution scratch texture, so smaller levels were blurred with three quarters of the clear colour and the bloom showed a visible seam at the screen's centre lines. Each level now has its own scratch target.
- Integer overflow panics in debug builds in the hash functions of `particle::density_entity`, `volumetric_fog`, `editor::terrain` and `editor::map_editor` loot rolls (16 unit tests now pass).
- `particle_bench` did not compile after `MathParticle` gained fields.
- Five doc examples (`ai::steering`, `animation`, `debug::console`, `game::transitions`, `replay`) did not compile against the current API.
### Changed
- `MathParticle` has new public fields; struct literals need `..Default::default()`.
### Known issues
- 79 library unit tests fail and are listed in `ci/known-failing-tests.txt`; CI skips exactly those.
## 0.1.1
Initial crates.io release.