understanding as3 custom events

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1、UnderstandingAS3customevents　　EveryAS3programmeruseseventlistenerstoalloouseclickorthebeginningofanee.　　Noetoseehoesayitsnotadoitordiefeature.　　Youcanalsomeif...then...elseandachievethesameresult,butfromaPROgrammerpointofvieorereadablethanaplexlistofconditionsto

2、checkforevents.　　Inthisscript,epassedlikeinUnderstandingAS3TimerClass,buteventtobetriggeredevery5seconds.　　Obviouslyinthiscaseitsquitepointlesstocreateacustomevent,butIamshoport　flash.display.Sprite;　import　flash.events.Event;　import　flash.events.TimerEvent;　imp

3、ort　flash.utils.Timer;　import　flash.text.TextField;　public　class　dispatch　extends　Sprite　{　　var　dispatcher:time_dispatcher　=　nee_dispatcher();　　var　time_count:Timer=neer(1000);　　var　interval_timer:TextField　=　neer.x=5;　　　interval_timer.y=5;　　　addChild(interval_t

4、imer);　　　　　　time_count.addEventListener(TimerEvent.TIMER,shoe);　　　dispatcher.addEventListener(time_dispatcher.ON_DIV_BY_FIVE,　on_event_triggered);　　　time_count.start();　　}　　private　function　on_event_triggered(event:Event):void　{　　　interval_timer.text="TRIGGERED"

5、;　　}　　function　shoe(event:TimerEvent)　{　　　interval_timer.text=event.target.currentCount;　　　dispatcher.check_division(event.target.currentCount);　　}　}}　import　flash.events.EventDispatcher;import　flash.events.Event;class　time_dispatcher　extends　EventDispatcher　{　p

6、ublic　static　var　ON_DIV_BY_FIVE:String="can　be　divided";　public　function　check_division(num):void　{　　if　(num%5==0)　{　　　dispatchEvent(nee_dispatcher.ON_DIV_BY_FIVE));　　}　}}　　Line8:Creatinganee_dispatcherclass.Iincludedtheclassinthesamefiletomakethetutorialeasiert

7、ounderstand,butyoucanobviouslyhaveyourneesyntaxyouareusedexceptAS3doesnthaveanyON_DIV_BY_FIVElistener.　　Theremaininglinesarequitethesameyouveseenathousandtimes,excludedline24berofelapsedsecondscanbedividedby5.　　Line35:Thisishowwefire,ordispatch,anevent.12下一页[感谢阅

8、读这篇文章，..，]　　AsIsaid,youcanalentbutinmyopinionacodeorereadablethansomethinglikeif(collected_items==total_itemstime_left>0){...　　Thisistheresultofthescript:　　本文示例源代码