/// <summary>
/// 찾은 길을 거꾸로 올라가는 함수.
/// </summary>
/// <param name="startNode"></param>
/// <param name="endNode"></param>
/// <returns></returns>
private CellClass[] RetracePath(CellClass startNode, CellClass endNode)
{
List <CellClass> path = new List <CellClass>();
CellClass currentNode = endNode;
while (currentNode != startNode)
{
path.Add(currentNode);
currentNode = currentNode.GetParent();
}
path.Reverse();
path.Insert(0, startNode);
return(path.ToArray());
}