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1、信息工程学院Flash游戏制作——《雷电游戏》英文原文ActionScript3.0ActionScript3.0isapowerful,object-orientedprogramminglanguagethatsignifiesanimportantstepintheevolutionofthecapabilitiesoftheFlashPlayerruntime.ThemotivationdrivingActionScript3.0istocreatealanguageideallysuitedforrapi
2、dlybuildingrichInternetapplications,whichhavebecomeanessentialpartofthewebexperience.EarlierversionsofActionScriptofferedthepowerandflexibilityrequiredforcreatingtrulyengagingonlineexperiences.ActionScript3.0nowfurtheradvancesthelanguage,providingsuperbperform
3、anceandeaseofdevelopmenttofacilitatehighlycomplexapplications,largedatasets,andobject-oriented,reusablecodebases.WithActionScript3.0,developerscanachieveexcellentproductivityandperformancewithcontentandapplicationsthattargetFlashPlayer.ActionScript3.0isbasedon
4、ECMAScript,theinternationalstandardizedprogramminglanguageforscripting.ActionScript3.0iscompliantwiththeECMAScriptLanguageSpecification,ThirdEdition.ItalsocontainsfunctionalitybasedonongoingworkonECMAScriptEdition4,occurringwithintheECMAstandardsbody.ActionScr
5、iptisexecutedbytheActionScriptVirtualMachine(AVM)builtintotheFlashPlayer.AVM1,thevirtualmachineusedtoexecutelegacyActionScriptcode,powersFlashPlayertodayandmakespossibleawiderangeofinteractivemediaandrichInternetapplications.However,developershavestartedtopush
6、AVM1toitslimits;theirprojectrequirementsnowdemandamajorbreakthrough.ActionScript3.0introducesanewhighlyoptimizedActionScriptVirtualMachine,AVM2,whichdramaticallyexceedstheperformancepossiblewithAVM1.Asaresult,ActionScript3.0codeexecutesupto10timesfasterthanleg
7、acyActionScriptcode.ThenewAVM2virtualmachineisavailableinFlashPlayer9,andwillbetheprimaryvirtualmachineforActionScriptexecutiongoingforward.TheolderAVM1willcontinuetobesupportedbyFlashPlayerforbackwardscompatibilitywithexistingandlegacycontent.Therearenumerous
8、productsthatgeneratecontentandapplicationstargetedattheFlashPlayerruntime.OftentheseproductsincorporatesupportforActionScripttoaddinteractivityandbehaviortotheiroutput.Inthe第8页共8页信
