v0.8.0

Particle System

A flexible 2D particle emitter built on instanced rendering, with a complete C++ simulation backend and TypeScript API.

ParticleEmitter component — attach to any entity with 40+ configurable properties covering emission rate, burst, lifetime, shape, velocity, size, color, rotation, forces, sprite sheet animation, and blend mode
4 emission shapes — Point, Circle, Rectangle, and Cone, each with dedicated editor gizmo visualization showing the emission area in the Scene View
Size & color over lifetime — start/end ranges with 4 easing modes (Linear, EaseIn, EaseOut, EaseInOut) for smooth transitions
Custom material support — assign per-emitter materials via getMaterialDataWithUniforms, enabling custom shaders on particles
Scissor clip (UIMask) compatibility — particles respect UIMask clipping regions, making them usable inside scrollable UI panels
Simulation space — choose between World and Local space; local-space particles follow their parent entity’s transform
Sprite sheet animation — configure columns, rows, FPS, and loop for animated particle textures
Runtime API — Particle.play(entity), Particle.stop(entity), Particle.reset(entity), Particle.getAliveCount(entity)
Editor inspector — properties organized into logical groups (Emission, Lifetime, Shape, Velocity, Size, Color, Rotation, Forces, Texture, Rendering) with constrained inputs
Particle overlay gizmo — real-time shape visualization in Scene View with zoom-aware rendering, showing Point crosshairs, Circle outlines, Rectangle bounds, or Cone angle spreads

Fix rotation gizmo instability for UIRect entities with non-center pivots — pin entity world position at drag start to prevent feedback loop between rotation and pivot-adjusted position recalculation
Fix particles not rendering in editor Game View — add missing Renderer.submitParticles() call in GameViewRenderer.renderAndCapture()

Fix playable (single-HTML) builds failing to preload audio — route audio preload through RuntimeAssetProvider to read inline base64 data instead of using fetch() on file:// protocol
Include AudioPlugin and ParticlePlugin in playable builds — add AudioSource and ParticleEmitter to COMPONENT_TO_PLUGIN mapping and always-include both plugins alongside AnimationPlugin

Add particle system unit tests covering emitter lifecycle, emission rate, burst mode, shape distribution, size/color interpolation, forces, and sprite sheet animation