UnityEngine Event & EventSystem系统架构图

StandaloneInputModule

+ ctor()+ AddListener(UnityAction)+ RemoveListener(UnityAction);+ Invoke()

PointerInputModule

AxisEventData

+ moveDir+ moveVector

BaseInputModule

+ Process() : 每帧调用

IDe/SelectHandler

IPointerXXXHandler

PhysicsRayCaster

IDragXXXHandler

BaseRayCaster

IEventSystemHandler

BaseEventData

+ currentInputModule.+ selectedObject+ used

TouchInputModule

EventSystem

+ currentInputModule + static current : EventSystem+ (current/first/last)SelectedGameObject: GameObject

+ RaycastAll(PointerEventData List);

UnityEvent分为泛型和非泛型两种，用法各有不同，不同模版参数的UnityEvent对应相应的UnityAction

UnityEventBase

+ GetPersistentEventCount() : int+ GetPersistentMethodName(int) : string+ GetPersistentTarget(int) ： Object+ RemoveAllListeners()

Physics2DRayCaster

需要绑定在同一个GameObject上

PointerEventData

+ button+ delta+ scrollDelta+ pointerCurrentRaycast+ position+ worldPosition