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bevy-master

Bevy ECS hub for Bevy 0.20+. Use when starting a Bevy game, choosing ECS boundaries, or picking a Bevy skill. Keywords: Bevy, ECS, bevy-master, schedules, plugins.

thedivergentai/Game-Design-Agentic-Skills

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含まれるファイル（164）

SKILL.md15.6 KB
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SKILL.md（原文）

インストールする前に、エージェントに与えられる指示の中身を確認できます。

Bevy Master: ECS hub

ECS hub for Bevy 0.20+. Start here to set up a Bevy app, decide which components, resources, and systems own each piece of state, and load the right Bevy skill for the job.

Library target

Target: Bevy 0.20+ (tested against 0.20.0).

Who owns what (ECS)

For every piece of state, name:

which component or resource owns it
which system may mutate it
which message or observer should observe it

Schedules replace a scene tree. Do not add an autoload, a signal bus, or a Node layer cake.

The Quick Start ECS page defines entities, components (Component), systems as functions, Query, Commands, Startup, and Update, plus .chain() for order. Messages, observers, resources, and app states are covered in their own skills. See those files before calling a type.

Routing

Scenario	Route
New Bevy app, ECS boundaries, which skill to load	This hub, then the module directory below
New crate, Cargo features, feature folders	bevy-project-foundations
Entity composition, components, systems	bevy-ecs-composition
Messages, events, observers	bevy-events-messaging
Components and resources as data	bevy-data-resources
App states or a per-entity mode flag	bevy-state-machines
App-wide resources and schedules	bevy-app-resources
Character movement	bevy-character-movement
3D physics	bevy-physics-3d
2D physics	bevy-physics-2d
Ray, overlap, or physics pick	bevy-spatial-queries
Navigation mesh or path data	bevy-navigation
Chase, patrol, retarget	bevy-ai-navigation
Seeded level or loot layout	bevy-procedural-generation
Keyboard, mouse, gamepad	bevy-input-handling
2D or 3D camera entity	bevy-camera-systems
Play or control a clip	bevy-audio-systems
Load assets or spawn a scene	bevy-asset-scenes
Player save slot	bevy-save-load
Logs and frame diagnostics	bevy-debugging-profiling
Parallelism, fixed step, handle lifetime	bevy-performance
`cargo test`	bevy-testing-patterns
Clips, blend graphs, sprites, lights, materials, UI, or a genre loop	Module directory below

When not to spawn an entity

Data that is not simulated can be a plain Rust struct or a resource. The Quick Start treats resources as app-wide data. Check the resources page for field names before writing them. Do not copy a Godot Object / RefCounted / Resource / Node table into Bevy.

Workflows

(a) App scaffold. App::new(), plugins, schedules, and states. The plugins page documents Plugin, DefaultPlugins, MinimalPlugins, and add_plugins. The bevy 0.20.0 crate docs list a bevy_state feature ("built in global state machines"). Check the state docs for the state API before writing it. Do not invent a plugin list beyond DefaultPlugins / MinimalPlugins.

(b) Entity. Components plus systems. Movement belongs on a fixed timestep. bevy::time 0.20.0 documents Fixed ("fixed timestep game clock") and run_fixed_main_schedule (FixedMain). Do not invent a schedule label beyond those names.

(c) Data. Components and resources. Not .tres files.

(d) Performance. The ECS page states systems run in parallel by default when they can, and .chain() forces order. Frame-time diagnostics and handle lifetimes are on bevy-performance. No numeric budget is stated on those pages.

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 on latest; 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 or gdext type imports in Bevy code. WHY: Bevy code stays idiomatic ECS and uses only documented Bevy APIs.
No GDScript line-translate. WHY: Bevy code stays idiomatic ECS and uses only documented Bevy APIs.
No APIs that this file did not open. WHY: Bevy code stays idiomatic ECS and uses only documented Bevy APIs.
No Coil or Ouroboros UI. WHY: Bevy code stays idiomatic ECS and uses only documented Bevy APIs.

Module directory

Domain skills:

Rendering and animation:

Gameplay:

UI, platforms, adapts, templates:

Genre routers:

Reference

docs.rs links use the unversioned latest permalink (same role as Godot /en/stable/). The library pin above stays 0.20.0.

Official Documentation

Migration guides - Unversioned hop index. Version numbers stay in prose; this link does not pin a release.
bevy crate - Unversioned API index. Feature samples on the pinned page may still show older version strings.
Assets - Official asset catalog.
Examples - Example tree on the latest branch, not a release tag.
Quick Start - Guide index. The legacy /learn/book/ path returned 404 on 2026-10-11.
Getting started - App setup before ECS and plugins.
ECS - Entities, components, systems, Query, Commands, Startup, Update, and .chain().
Plugins - Plugin, DefaultPlugins, MinimalPlugins, and add_plugins.
bevy::time - Fixed and run_fixed_main_schedule (FixedMain).
crates.io bevy - Release pin source (0.20.0, 2026-10-08).

Related Skills

Prerequisites

None. This hub is the Bevy entry point.

Complements

godot-master - Godot hub.

Downstream / consumers

bevy-project-foundations - Crate, Cargo features, and layout habits.
bevy-ecs-composition - Components, spawn tuples, queries, and .chain().
bevy-events-messaging - Message readers and Event observers.
bevy-data-resources - Component versus Resource.
bevy-state-machines - bevy::state and per-entity mode flags.
bevy-app-resources - App-wide resources and Startup / Update.
bevy-character-movement - Player and actor motion on the fixed timestep.
bevy-physics-3d - Simulated 3D bodies once a solver crate is verified.
bevy-physics-2d - Simulated 2D bodies.
bevy-spatial-queries - Casts and overlaps. Solver still unpicked.
bevy-navigation - Path data.
bevy-ai-navigation - Chase and patrol policy.
bevy-procedural-generation - Seed resource and spawn. No noise API.
bevy-input-handling - ButtonInput, mouse, and gamepad.
bevy-camera-systems - Camera2d and Camera3d.
bevy-audio-systems - AudioPlayer and AudioSink.
bevy-asset-scenes - AssetServer and spawn_scene.
bevy-save-load - Player save slots. Scene spawn is not a save.
bevy-debugging-profiling - LogPlugin and diagnostics plugins.
bevy-performance - Parallel systems, fixed step, handle lifetimes.
bevy-testing-patterns - cargo test. Not GdUnit.

Master

This file. Do not route Bevy work through a parent that also owns Godot.

Cipher rule titles only: runtime gameplay is Rust; do not pull Godot types into Bevy crates.

Scope

Resources, states, messages, and observers live in their own skills. Call only the types those skills cite. Check the App docs for state-installation method names before writing them.
The getting-started snippet still shows bevy = "0.19" while crates.io latest is 0.20.0. Pin 0.20.0 from crates.io and docs.rs, not from that stale snippet.
docs.rs feature examples on the 0.20.0 page still show version = "0.18" in one sample. That sample is not the pin.

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このスキルの問題を報告する

インストール

コマンドで入れる

npx skills add https://github.com/thedivergentai/Game-Design-Agentic-Skills --skill bevy-master

ターミナルに貼り付けて実行します（Node.js が必要です）。

Claude に頼む

次の Agent Skill をインストールしてください。
https://github.com/thedivergentai/Game-Design-Agentic-Skills/tree/main/skills/bevy-master

まず SKILL.md と付属ファイルの中身を確認し、不審な処理（外部への送信、認証情報の読み取りなど）がないことを確かめてから、~/.claude/skills/bevy-master/ に配置してください。

この文章をそのまま Claude Code に送ると、中身を確認してから入れてくれます。

GitHub でソースを見る

リポジトリ: thedivergentai/Game-Design-Agentic-Skills
スター: 845
フォーク: 53
カテゴリ: ドキュメント・Office
ライセンス: LGPL-3.0
本文の言語: 英語
最終更新: 2026年10月13日

スキルはエージェントへの指示とスクリプトの集まりです。cccskills は内容の安全性を保証していません。入れる前に中身を確認してください。