所以我想讓我的木板從A點(diǎn)移動(dòng)到B點(diǎn)，然后在它到達(dá) B 點(diǎn)時(shí)停止。我實(shí)現(xiàn)了do while loop，for-loop但不幸的是，每次我點(diǎn)擊播放場(chǎng)景按鈕時(shí)，Unity 都會(huì)凍結(jié)，知道為什么會(huì)發(fā)生這種情況嗎？public class movingplank : MonoBehaviour {    public Rigidbody2D Rigidbody2d;            float x;       Vector2 ve = new Vector2();    // Use this for initialization    void Start ()     {        Rigidbody2d = GetComponent<Rigidbody2D>();    }    // Update is called once per frame    void Update ()     {          do         {   ve = Rigidbody2d.transform.position;             x = ve.x;      // storing x component of my plank into float x            Rigidbody2d.velocity = new Vector2(1f, 0f);        } while (x <-4);   // move plank till it reaches point B    } }