protected override void OnCreate() { DragThreshold = 3.0f; m_ButtonStates = new NativeArray <MouseButtonState>(3, Allocator.Persistent); m_CommandBufferSystem = World.GetOrCreateSystem <ControlsInputBufferSystem>(); m_PointerEventArchetype = EntityManager.CreateArchetype(typeof(PointerEvent), typeof(PointerInputBuffer)); m_KeyboardEventArchetype = EntityManager.CreateArchetype(typeof(KeyboardEvent), typeof(KeyboardInputBuffer)); m_RootGroup = GetEntityQuery(new EntityQueryDesc { All = new ComponentType[] { ComponentType.ReadOnly <RectTransform>(), ComponentType.ReadOnly <Child>(), ComponentType.ReadOnly <WorldSpaceRect>(), }, None = new ComponentType[] { typeof(Parent) }, Options = EntityQueryOptions.FilterWriteGroup }); EntityManager.CreateEntity(typeof(InputSystemState)); EntityManager.CreateEntity(typeof(NativePointerInputContainer), typeof(NativePointerButtonEvent), typeof(NativePointerState)); EntityManager.CreateEntity(typeof(NativeKeyboardInputContainer), typeof(NativeKeyboardInputEvent)); base.OnCreateManager(); }