新手引导1~3步

wangguan

2020-10-23 f08d4cf99c556eee7ba06f99015bf87a601dad50

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using System;
using UnityEngine;
using UnityEngine.UI;
using System.Collections;
/// <summary>
/// 播放文字脚本
/// </summary>
public class CharForeach : MonoBehaviour
{
    public float letterPause = 1f;
    private string word;
    private Text text;
    public delegate void CallBack();
    private Action callBack;
    void Awake()
    {
        text = transform.Find("Scroll View/Viewport/Content/Text").GetComponent<Text>();
    }
 
    public void StartShowWord(string str, Action cb)
    {
        Debug.Log("StartShowWord"+str);
 
        word = str;
        text.text = "";
        callBack = cb;
        StartCoroutine("TypeText");
    }
 
    public void ShowWordImmediately()
    {
        Debug.Log("ShowWordImmediately");
        StopCoroutine("TypeText");
        text.text = word;
        if (callBack != null)
        {
            callBack();
            callBack = null;
        }
 
    }
 
    private IEnumerator TypeText()
    {
        foreach (char letter in word.ToCharArray())
        {
            text.text += letter;
            yield return new WaitForSeconds(letterPause);
        }
 
        if (callBack != null)
        {
            callBack();
            callBack = null;
        }
    }
}