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4ipideil — Thu, 18 Dec 2014 17:12:57 -0000

Event Type Creation

#include "EventListener.h"

NEW_EVENT_MAKER(EventStartLoadListener);
NEW_EVENT_MAKER(EventCompleteLoadListener);
NEW_EVENT_MAKER(EventPutSwordListener);
NEW_EVENT_MAKER(EventHitByEnemyListener);
...

Event Holder Creation

EventHolder<EventStartLoadListener> loadStartEventsHolder;
EventHolder<EventCompleteLoadListener> LoadCompleteEventsHolder;
EventHolder<EventHitByEnemyListener> HitByEnemyEventsHolder;
...

//Subscribe to the StartLoad event for pForm with pForm->Delegate() delegate:
loadStartEventsHolder += new EventStartLoadListener(pForm, &Form::Delegate, pForm);

//Re-Subscribe to the pForm and change delegate to pSample->SDelegate() //delegate:
loadStartEventsHolder += new EventStartLoadListener(pSample, &Sample::SDelegate, pForm);

//Subscribe to the StartLoad event for pForm2 with pSample->SDelegate() //delegate:
loadStartEventsHolder += new EventStartLoadListener(pSample, &Sample::SDelegate, pForm2);

/*Move delegate for pForm to the end of the EventList, and it will be called at the end (but there is only one StartLoad event for pForm so it dosent change anything but eventList will become: StartEvents[pForm2, pForm])*/
loadStartEventsHolder += new EventStartLoadListener(pSample, &Sample::SDelegate, pForm);

//UnSubscribe from pForm StartLoad Event
loadStartEventsHolder -= new EventStartLoadListener(dontcare, &DontCareDelegate, pForm);

//UnSubscribe from all StartLoad Events (in this case unSubscribe from pForm2)
loadStartEventsHolder--;

Events Life Cycle

EventHolder<EventListener> someHolder; //- can be used only as local object and //automatically removed, when class will be disposed (as any local objects)

//event that was subscribed manually
EventListener* someEvent = new EventSayMeowListener(sample, &Sample::delegateLoad, pForm);
//Need to dispose it manually
delete someEvent;

//You can UnSubscribe any events inside delegate (as it is in C#)

Events Chain

bool delegateComliteLoad(void obj, const EventArgs args) {
return false;
}

//If function return true, then next event in eventList will not be called

Generate Events

//Make custom EventArgs
class CustomEventArgs : public EventArgs {
public: int custom_var;
}

//Calling CompleteLoad EventChain where sender == pForm :
EventController::GetInst().GenerateEvent<EventCompleteLoadListener>(pForm, pCustomEventArgs);

Home modified by 4ipideil

4ipideil — Thu, 18 Dec 2014 15:57:43 -0000

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