using System;
using System.Collections;
using System.Collections.Generic;
using QFramework;
using UnityEngine;
using UnityEngine.UI;

public class TextLoader : MonoBehaviour
{
    /// <summary>
    /// 完整文本
    /// </summary>
    [SerializeField]
    private string m_fullText;

    /// <summary>
    /// 每秒加载的字符数
    /// </summary>
    [SerializeField]
    private float m_speedTime = 0.1f;

    /// <summary>
    /// 计时器
    /// </summary>
    private float m_Timer;

    /// <summary>
    /// 当前加载长度
    /// </summary>
    private int m_currentNumber = 0;
    
    private Text m_HintEffectTxt;
    
    // Start is called before the first frame update
    void Start()
    {
        m_HintEffectTxt = transform.GetComponent<Text>();
    }

    private void FixedUpdate()
    {
        if (m_currentNumber >= m_fullText.Length)
        {
            m_currentNumber = 0;
            m_HintEffectTxt.text = String.Empty;
            m_Timer = 0;
        }
        else
        {
            m_Timer += Time.deltaTime;

            if (m_Timer >= m_speedTime)
            {
                m_Timer = 0;
                m_currentNumber++;

                m_HintEffectTxt.text = m_fullText.Substring(0, m_currentNumber);
            }
        }
    }
}