Unity3D模型重力感应

关于unity3d模型的重力感应，在这里我们使用unity引擎提供的Input.acceleration重力感应；

例如：

public Transform m_round;

    Transform trans;

    //小球在屏幕的最大范围

    float cross_x=0;

    float cross_y=0;

    float cross_z=0;

    float m_x=0;

    float m_y=0;

    Vector3 screenpioint;

// Use this for initialization

void Start () {

        trans = ( Transform ) Instantiate ( m_round, m_round.position, Quaternion.identity );

      m_x= trans.GetComponent ( ).mesh.bounds.size.x * trans.localScale.x;

       m_y = trans.GetComponent ( ).mesh.bounds.size.y * trans.localScale.y;

       cross_x = Screen.width - m_x;

       cross_y = Screen.width - m_y;

}

    void OnGUI ( )

    {

        //整体显示x,y,z的重力分量

        GUI.Label ( new Rect ( 0, 0, 400, 200 ), "position is" + Input.acceleration + "--x" + trans.GetComponent ( ).mesh.bounds.size.x * trans.localScale.x + "--" + trans.GetComponent ( ).mesh.bounds.size.y * trans.localScale.y );

        GUI.Label ( new Rect ( 2, 30, 400, 200 ), "screenpioint.x is" + screenpioint.x + "screenpioint.y is" + screenpioint.y );

    }

       

// Update is called once per frame

void Update () {

       // ////根据重力分量修改小球的位置

     

        screenpioint=Camera.main.WorldToScreenPoint ( trans.position );

        screenpioint.x += Input.acceleration.x * 100 * Time.deltaTime;

        screenpioint.y -= Input.acceleration.y * 100 * Time.deltaTime;

        if (screenpioint.x <= m_x*2)

            screenpioint.x = m_x*2;

        if (screenpioint.y <=m_y*2)

            screenpioint.y = m_y*2;

        if (screenpioint.x >= cross_x)

            screenpioint.x = cross_x;

        if (screenpioint.y >= cross_y)

            screenpioint.y = cross_y;

        trans.position = Camera.main.ScreenToWorldPoint ( screenpioint );

}

快来试试吧，哇咔咔！