ISystem Interface

Definition

Namespace: Brine2D.ECS

Interface for systems that process entities in the ECS. Systems run before behaviors during EntityWorld.Update().

public interface ISystem

Derived
↳ IRenderSystem
↳ IUpdateSystem
↳ FixedUpdateSystemBase
↳ IFixedUpdateSystem
↳ RenderSystemBase
↳ UpdateSystemBase
↳ ParticleSystem
↳ TilemapSystem

Remarks

Systems are scene-scoped and automatically cleaned up when the scene unloads. Use systems for batch processing of many entities \(physics, collision, etc\.\). For entity-specific logic, use Behavior instead.

Ambient vs. parameter-passed: unlike Behavior (which exposes its framework services as ambient properties since one instance is bound to one entity for its entire attached lifetime), a system instance is shared across many entities and batch-processes all of them on each call. There is no single "current entity" to be ambient about, so systems instead take IEntityWorld (and the entities/components within it) as explicit parameters to Update, FixedUpdate, or Render. See Behavior's remarks for the full rule.