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unity-ecs-patterns skill

by wshobson·wshobson/agents·40k stars·MIT

Master Unity ECS (Entity Component System) with DOTS, Jobs, and Burst for high-performance game development. Use when building data-oriented games, optimizing performance, or working with large entity counts.

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Install the unity-ecs-patterns skill

A skill is a folder. Copy it into your agent's skills folder and the agent loads it when the task matches its description. 

git clone --depth 1 https://github.com/wshobson/agents.git /tmp/agents
mkdir -p ~/.claude/skills
cp -r /tmp/agents/plugins/game-development/skills/unity-ecs-patterns ~/.claude/skills/unity-ecs-patterns
available in every project

In the Claude apps, zip the folder and upload it from the Skills settings. The folder on GitHub

The instructions your agent would load

SKILL.md as published, without the frontmatter. Read it on GitHub

Unity ECS Patterns

Production patterns for Unity's Data-Oriented Technology Stack (DOTS) including Entity Component System, Job System, and Burst Compiler.

When to Use This Skill

  • Building high-performance Unity games
  • Managing thousands of entities efficiently
  • Implementing data-oriented game systems
  • Optimizing CPU-bound game logic
  • Converting OOP game code to ECS
  • Using Jobs and Burst for parallelization

Core Concepts

1. ECS vs OOP

2. DOTS Components

Entity: Lightweight ID (no data)
Component: Pure data (no behavior)
System: Logic that processes components
World: Container for entities
Archetype: Unique combination of components
Chunk: Memory block for same-archetype entities

Detailed patterns and worked examples

Detailed pattern documentation lives in references/details.md. Read that file when the navigation tier above is insufficient.

Best Practices

Do's

  • Use ISystem over SystemBase - Better performance
  • Burst compile everything - Massive speedup
  • Batch structural changes - Use ECB
  • Profile with Profiler - Identify bottlenecks
  • Use Aspects - Clean component grouping

Don'ts

  • Don't use managed types - Breaks Burst
  • Don't structural change in jobs - Use ECB
  • Don't over-architect - Start simple
  • Don't ignore chunk utilization - Group similar entities
  • Don't forget disposal - Native collections leak

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