连续滚动的UI Unity

using UnityEngine;
using UnityEngine.UI;

public class ScrollText : MonoBehaviour
{
    public Text scrollText;
    private float scrollSpeed = 10f;
    private string fullText;
    private float textWidth;
    private RectTransform scrollRectTransform;

    void Start()
    {
        scrollRectTransform = GetComponent<RectTransform>();
        fullText = "这是一个连续滚动的文本示例。这是一个连续滚动的文本示例。";
        scrollText.text = fullText;
        textWidth = scrollText.preferredWidth;
    }

    void Update()
    {
        scrollRectTransform.anchoredPosition += new Vector2(0, -scrollSpeed * Time.deltaTime);
        if (scrollRectTransform.anchoredPosition.y <= -textWidth)
        {
            scrollRectTransform.anchoredPosition = new Vector2(0, 0);
        }
    }
}