bevylisted

# Bevy Game Development Skill A specialized skill for developing games and applications using the Bevy game engine, based on real-world experience building complex Bevy projects. ## When to Use This Skill Invoke this skill when: - Implementing features in a Bevy game or application - Designing component architectures for ECS - Creating or debugging Bevy systems - Working with Bevy's UI system - Building and testing Bevy projects - Troubleshooting common Bevy issues - Organizing project structure for Bevy applications ## Before You Start: Essential Bevy Tips ### ⚠️ Bevy 0.19 Breaking Changes > This skill targets **Bevy 0.19** (0.19.0, released 2026-06-19) — the current > version. For a project still on 0.18, the items below marked as 0.18-era > (messages, `single()`) still apply; see the migration-gotchas section in > `references/bevy_specific_tips.md` for the 0.18 → 0.19 deltas. **When working with Bevy 0.19**, be aware of these API shapes: - Material handles wrapped in `MeshMaterial3d<T>` (not `Handle<T>`); meshes in `Mesh3d` - Buffered **events are "messages"**: `EventWriter`→`MessageWriter` (`.write()`), `EventReader`→`MessageReader` (`.read()`), `add_event::<T>()`→`add_message::<T>()`, `#[derive(Event)]`→`#[derive(Message)]` - Observers (`commands.trigger()`, `add_observer()`) are a **separate** reactive tool — not a replacement for buffered messages - Queries use `.single()`/`.single_mut()` (both return `Result`); `get_single*` was removed - `TextFont.font_size` i