停车场停车

Floor

+level:Number+spaceList:Number

+emptySpaceNum():Number

Space

+spaceId:Number+empty:Boolean

+enter():void+leave():void

Screen

+number:Number+name:String

+showEnter():void+showLeave():void

Park

+floorList:Array+carList:Object+camera:Camera+screen:Screen

+enter():void+leave():void+emptySpaceNum():Number

Camera

+shoot():Object

Car

+carPlate:String+space:Space