使用kinect控制实例化的GameObject

Question

我尝试了一些脚本来控制层次结构中的对象，并且效果很好，

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Windows.Kinect;

public class DetectJoint : MonoBehaviour {

public GameObject BodySrcManager;
public JointType TrackedJoint;
private BodySourceManager bodyManager;
private Body[] bodies = null;
public float multiplier = 10f;

void Start()
{
    if (BodySrcManager == null)
    {
        Debug.Log("Assign Game Objects with body source manager");
    }
    else
    {
        bodyManager = BodySrcManager.GetComponent<BodySourceManager>();
    }
}

void Update()
{
    if (bodyManager == null)
    {
        Debug.Log("bodyManager is Null");
        return;
    }


    bodies = bodyManager.GetData();


    if (bodies == null)
    {
        Debug.Log("bodies is Null");
        return;
    }
    foreach (var body in bodies)
    {
        if (body == null)
        {
            continue;
        }
        if (body.IsTracked)
        {
            var pos = body.Joints[TrackedJoint].Position;
            gameObject.transform.position = new Vector3(pos.X * multiplier, pos.Y * multiplier);
        }
    }
}

}

和一个名为BodySourceManager的脚本

using UnityEngine;
using System.Collections;
using Windows.Kinect;

public class BodySourceManager : MonoBehaviour 
{
    private KinectSensor _Sensor;
    private BodyFrameReader _Reader;
    private Body[] _Data = null;

    public Body[] GetData()
    {
        return _Data;
    }


    void Start () 
    {
        _Sensor = KinectSensor.GetDefault();

        if (_Sensor != null)
        {
            _Reader = _Sensor.BodyFrameSource.OpenReader();

            if (!_Sensor.IsOpen)
            {
                _Sensor.Open();
            }
        }   
    }

    void Update () 
    {
        if (_Reader != null)
        {
            var frame = _Reader.AcquireLatestFrame();
            if (frame != null)
            {
                if (_Data == null)
                {
                    _Data = new Body[_Sensor.BodyFrameSource.BodyCount];
                }

                frame.GetAndRefreshBodyData(_Data);

                frame.Dispose();
                frame = null;
            }
        }    
    }

    void OnApplicationQuit()
    {
        if (_Reader != null)
        {
            _Reader.Dispose();
            _Reader = null;
        }

        if (_Sensor != null)
        {
            if (_Sensor.IsOpen)
            {
                _Sensor.Close();
            }

            _Sensor = null;
        }
    }
}

问题是我无法控制来自Prefabs的实例化

任何想法怎么做？