int layerMask=~(11<<8);
		List<PathNode> wave=new List<PathNode>();
		List<PathNode> curWave=new List<PathNode>();
		wave.Add(new PathNode(source.position,0));
		do{
			curWave.Clear();
			for(int n=0;n<wave.Count;n++)
			{
				for(int m=0; m<wayPoints.Length;m++)
				{
					if(!Physics.Linecast(wave[n].WayPoint, wayPoints[m],layerMask))
					{
						int newDist=wave[n].Distance+(int)Vector3.Distance(wave[n].WayPoint, wayPoints[m]);
						if(newDist==0) continue;
						if(distances[m]==0 || distances[m]>newDist)
						{
							curWave.Add(new PathNode(wayPoints[m], newDist));
							distances[m]=newDist;
						}
					}
				}
			}
			wave.Clear();
			wave.AddRange(curWave);

		}while(wave.Count>0);