public static void RequestPath(Vector3 startPoint, float power, float angle, float gravity, Action <Vector3[], bool> callback)
    {
        ParabolaPathRequest newRequest = new ParabolaPathRequest(startPoint, power, angle, gravity, callback);

        instance.pathRequestQueue.Enqueue(newRequest);
        instance.TryProcessNext();
    }
 private void TryProcessNext()
 {
     if (!isProcessingPath && pathRequestQueue.Count > 0)        //處理所有的路徑需求  完成時再次確認
     {
         currentPathRequest = pathRequestQueue.Dequeue();
         isProcessingPath   = true;
         pathfinding.StartFindPath(currentPathRequest.startPoint, currentPathRequest.power, currentPathRequest.angle, currentPathRequest.gravity);
     }
 }