unity-ecs-patterns
This skill provides production-ready patterns for Unity's Entity Component System, Job System, and Burst Compiler within the DOTS framework. Use it when developing high-performance games requiring efficient management of thousands of entities, optimizing CPU-bound logic through data-oriented design, or converting traditional object-oriented game code to leverage parallel processing and memory efficiency.
git clone --depth 1 https://github.com/wshobson/agents /tmp/unity-ecs-patterns && cp -r /tmp/unity-ecs-patterns/plugins/game-development/skills/unity-ecs-patterns ~/.claude/skills/unity-ecs-patternsSKILL.md
# 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 | Aspect | Traditional OOP | ECS/DOTS | | ----------- | ----------------- | --------------- | | Data layout | Object-oriented | Data-oriented | | Memory | Scattered | Contiguous | | Processing | Per-object | Batched | | Scaling | Poor with count | Linear scaling | | Best for | Complex behaviors | Mass simulation | ### 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
Test web applications with screen readers including VoiceOver, NVDA, and JAWS. Use when validating screen reader compatibility, debugging accessibility issues, or ensuring assistive technology support.
Conduct WCAG 2.2 accessibility audits with automated testing, manual verification, and remediation guidance. Use when auditing websites for accessibility, fixing WCAG violations, or implementing accessible design patterns.
Coordinate parallel code reviews across multiple quality dimensions with finding deduplication, severity calibration, and consolidated reporting. Use this skill when organizing multi-reviewer code reviews, calibrating finding severity, or consolidating review results.
Debug complex issues using competing hypotheses with parallel investigation, evidence collection, and root cause arbitration. Use this skill when debugging bugs with multiple potential causes, performing root cause analysis, or organizing parallel investigation workflows.
Coordinate parallel feature development with file ownership strategies, conflict avoidance rules, and integration patterns for multi-agent implementation. Use this skill when decomposing a large feature into independent work streams, when two or more agents need to implement different layers of the same system simultaneously, when establishing file ownership to prevent merge conflicts in a shared codebase, when designing interface contracts so parallel implementers can build against each other's APIs before they are ready, or when deciding whether to use vertical slices versus horizontal layers for a full-stack feature.
Decompose complex tasks, design dependency graphs, and coordinate multi-agent work with proper task descriptions and workload balancing. Use this skill when breaking down work for agent teams, managing task dependencies, or monitoring team progress.
Structured messaging protocols for agent team communication including message type selection, plan approval, shutdown procedures, and anti-patterns to avoid. Use this skill when establishing communication norms for a newly spawned team, when deciding whether to send a direct message or a broadcast, when a team-lead needs to review and approve an implementer's plan before work begins, when orchestrating a graceful team shutdown after all tasks are complete, or when debugging why teammates are not coordinating correctly at integration points.
Design optimal agent team compositions with sizing heuristics, preset configurations, and agent type selection. Use this skill when deciding how many agents to spawn for a task, when choosing between a review team versus a feature team versus a debug team, when selecting the correct subagent_type for each role to ensure agents have the tools they need, when configuring display modes (tmux, iTerm2, in-process) for a CI or local environment, or when building a custom team composition for a non-standard workflow such as a migration or security audit.