Unity Engine documentationScript ReferenceUnity.EntitiesISystemInterface implemented by unmanaged component systems.Read time 1 minuteLast updated 5 days agoDefinition Type: Interface Namespace: Unity.Entities Assembly: UnityEngine.EntitiesModule public interface ISystem Methods MethodDescriptionOnCreateCalled when this system is created.OnDestroyCalled when this system is destroyed.OnUpdateImplement OnUpdate to perform the major work of this system.