[]as3 寻路demo

感谢！(づ￣3￣)づ╭❤～

请问一下，代码里面的地图数据是怎么得到的?
var mapStr:String ="8,0,1,0,0,35,15,35,91,2287,0,1,1,12,0,1,1,21,0,2,1,4,0,3,1,4,0,2,1,19,0,19,1,17,0,22,1,12,0,23,1,12,0,23,1,10,0,25,1,10,0,25,1,9,0,26,1,10,0,25,1,10,0,15,1,1,0,7,1,12,0,15,1,2,0,5,1,13,0,10,1,1,0,4,1,5,0,1,1,14,0,9,1,3,0,3,1,22,0,7,1,3,0,2,1,24,0,3,1,7,0,1,1,24,0,2,1,56,0,1,1,34,0,2,1,33,0,1,1,34,0,2,1,33,0,1,1,1094,0";