new(windowName:String, state:MusicBeatState)
@:value(new BitmapFrontEnd())bmapFrontEnd:BitmapFrontEnd = new BitmapFrontEnd()
camera:FlxCamera
cameras:Array<FlxCamera>
camerasDefault:Array<FlxCamera>
state:MusicBeatState
window:Window
afterStateShit():Void
beforeStateShit():Void
draw():Void
update(elapsed:Float):Void