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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.ThemotivationdrivingActionScript3.0istocreatealanguageideallysuitedforrapidlybuilding
2、richInternetapplications,whichhavebecomeanessentialpartofthewebexperience.EarlierversionsofActionScriptofferedthepowerandflexibilityrequiredforcreatingtrulyengagingonlineexperiences.ActionScript3.0nowfurtheradvancesthelanguage,providingsuperbperformanceandeaseofdevelopme
3、nttofacilitatehighlycomplexapplications,largedatasets,andobject-oriented,reusablecodebases.WithActionScript3.0,developerscanachieveexcellentproductivityandperformancewithcontentandapplicationsthattargetFlashPlayer.ActionScript3.0isbasedonECMAScript,theinternationalstanda
4、rdizedprogramminglanguageforscripting.ActionScript3.0iscompliantwiththeECMAScriptLanguageSpecification,ThirdEdition.ItalsocontainsfunctionalitybasedonongoingworkonECMAScriptEdition4,occurringwithintheECMAstandardsbody.ActionScriptisexecutedbytheActionScriptVirtualMachine
5、(AVM)builtintotheFlashPlayer.AVM1,thevirtualmachineusedtoexecutelegacyActionScriptcode,powersFlashPlayertodayandmakespossibleawiderangeofinteractivemediaandrichInternetapplications.However,developershavestartedtopushAVM1toitslimits;theirprojectrequirementsnowdemandamajor
6、breakthrough.ActionScript3.0introducesanewhighlyoptimizedActionScriptVirtualMachine,AVM2,whichdramaticallyexceedstheperformancepossiblewithAVM1.Asaresult,ActionScript3.0codeexecutesupto10timesfasterthanlegacyActionScriptcode.ThenewAVM2virtualmachineisavailableinFlashPlay
7、er9,andwillbetheprimaryvirtualmachineforActionScriptexecutiongoingforward.TheolderAVM1willcontinuetobesupportedbyFlashPlayerforbackwardscompatibilitywithexistingandlegacycontent.TherearenumerousproductsthatgeneratecontentandapplicationstargetedattheFlashPlayerruntime.Oft
8、entheseproductsincorporatesupportforActionScripttoaddinteractivityandbehaviortotheiroutput.Inthe第8页共8页信
