new(?X:Float, ?Y:Float, ?SimpleGraphic:Null<FlxGraphicAsset>)
@:value([])beatAnims:Array<String> = []
@:value(1)initialZoom:Float = 1
name:String
@:value(NONE)spriteAnimType:XMLAnimType = NONE
@:value(1)zoomFactor:Float = 1
beatHit(curBeat:Int):Void
stepHit(curBeat:Int):Void