使い方
- インストールコマンドをコピーし、自分の環境へ導入する前にソースを確認します。
- 必要なツール、認証情報、対応環境を原文で確認します。
- 入力と成果物を指定し、出力を資料と照合します。
npx skills add https://github.com/thedivergentai/game-design-agentic-skills --skill bevy-ui-theming開始前の確認
- 導入にはモデル契約、API枠、ファイルへのアクセス許可は含まれません。
- スター数や導入数は活動の指標であり、独立した品質・安全性試験ではありません。
リポジトリの原文
見出し、例、コード、表、リンク、参照画像を含む原文を表示しています。
Bevy UI theming
When to use
Load this when many nodes should share colors or a widget style. There is no Godot Theme resource in Bevy.
ECS shape
- Per-node colors opened:
BackgroundColor,BorderColor,BorderRadius,BoxShadow,BackgroundGradient. - Feature:
bevy_feathersis a collection of styled widgets for editors and inspectors. Check that module for widget names before writing them. - Window chrome:
WindowThemeis an enum on bevy::window for the window theme variant. That is OS window chrome, not a UI skin. - Systems: you set components. No theme inheritance system was named.
Coming from Godot
| Godot idea | Bevy idiom |
|---|---|
| Theme resource | Your own resource of colors, copied onto BackgroundColor. No Theme type was opened. |
| Style box | BorderRadius and BoxShadow on a Node. |
| Editor widgets | bevy_feathers exists. Do not assume it skins a game HUD. |
Scope
- Theme, stylebox, and font-theme data are yours to build. Check
bevy::uibefore assuming a built-in type. - Check the feathers docs for widget pages before writing them.
Expert Knowledge Delta
Target: Bevy 0.20+.
Core ECS types: Component, Resource, Query, Commands, Startup, Update, Fixed / FixedMain (bevy::time), .chain(), Plugin, DefaultPlugins, MinimalPlugins. Messages and observers are an ownership slot. See bevy-events-messaging for their APIs. Systems run in parallel unless .chain() orders the ones that conflict.
Who owns state
| Piece | Owner | Who may mutate | Schedule |
|---|---|---|---|
| Data on one entity | Component | One system via Query | Update or FixedMain |
| One value for the whole app | Resource | One system | Startup to insert, then the schedule that reads it |
| Spawn | Commands | The spawning system | Startup for the initial world; later schedules for runtime spawn |
| Order that must not race | .chain() | The chained systems only | Same schedule |
| Plugin boundary | Plugin | build registers systems and resources | Before the app runs |
Borrow rule: two systems that both mutably query the same component must be ordered (.chain()) or split so only one writes. Unrelated systems stay parallel. That is the ECS page rule, not a guess at a system-set API.
Decision
| If you need | Do this | Do not |
|---|---|---|
| Per-entity data | Component + Query | A Godot node script |
| App-wide config or clock | Resource | Copy the value onto every entity |
| Stable simulation step | FixedMain and the Fixed clock | Tie simulation to raw frame Update |
| Startup spawn | Commands in Startup | Spawn from a render system |
| Cross-system notice that is not shared state | Message or observer slot in bevy-events-messaging | A new event type invented in this file |
| An API outside the documented set | Check the official docs first | A made-up crate or API |
Load references/ecs-ownership.md for the ownership table.
NEVER
- Do not pin
/0.20.0/in docs URLs. WHY: links stay onlatest; the 0.20 target is stated once in prose. - Do not mutably query the same component from two unordered systems. WHY: the schedule runs systems in parallel unless
.chain()orders them. - Do not invent a physics, navigation, networking, or XR crate here. WHY: this skill only names documented Bevy crates and modules.
- No Godot Theme or StyleBox types. WHY: Bevy code stays idiomatic ECS and uses only documented Bevy APIs.
- No Godot types in Bevy code. WHY: Bevy code stays idiomatic ECS and uses only documented Bevy APIs.
- No invented APIs or unnamed third-party crates as the chosen solver. WHY: Bevy code stays idiomatic ECS and uses only documented Bevy APIs.
Reference
docs.rs links use the unversioned latest permalink. The library pin on bevy-master stays 0.20.0.
Official Documentation
- Migration guides - Unversioned hop index.
- bevy crate - API reference and Cargo feature list.
- Assets - Official asset catalog. No third-party crate was selected.
- Examples - Example tree on the
latestbranch. - ECS -
Component, systems,Query,Startup,Update, and.chain(). - Plugins -
Plugin,DefaultPlugins,MinimalPlugins, andadd_plugins. - bevy::ui - Color and radius components.
- bevy::feathers - Editor widget collection.
Related Skills
Prerequisites
- bevy-master - Hub and schedules.
- bevy-ecs-composition - Components and systems.
- bevy-ui-layout - Nodes being styled.
Complements
- bevy-ui-text - Font choices.
- godot-ui-theming - Equivalent Godot skill.
Downstream / consumers
- None yet.
Master
- bevy-master - Bevy router.
