ECS System Design

What problem does it solve?

This Skill helps you design ECS systems that are deterministic, testable, and safe to run inside a fixed-timestep game loop without leaking Godot dependencies into Core logic.

Core Features & Use Cases

• System lifecycle design: Define Initialize, Update, PostTick, Shutdown, and SetTick behavior for clean system ownership.
• Execution ordering: Organize systems into groups such as Init, FixedTick, RenderSync, and Cleanup with predictable sequencing.
• Dependency validation: Declare read/write access with ComponentAccessAttribute so conflicting systems can be detected before runtime.
• Zero-allocation iteration: Use struct-based handlers for hot-path entity iteration to avoid per-frame heap allocations.
• Deferred structural changes: Route entity creation, destruction, and component edits through a CommandBufferSystem.
• Use case: An AI movement system can read input, update velocity, defer destruction of dead entities, and remain fully unit-testable in the Core project.

Quick Start

Ask the AI to design a new ECS system for your Godot project using the lifecycle, ordering, and dependency rules from this skill.