using System.Collections;

using System.Collections.Generic;

using UnityEngine;

using UnityEngine.UI;

public class TypewriterText : MonoBehaviour {

	private Text text;

	private string content;

	private float delay;

	// Use this for initialization

	void Start () {

		text = gameObject.GetComponent<Text>();

		if(text == null)

		{

			Debug.LogError("没添加Text脚本");

		}

	}

	public void TypeShow(string txt, float _delay=0.5f)

	{

		content = txt;

		delay = _delay;

		StartCoroutine(AppearText());

	}

	public void AllShow(string txt)

	{

		StopAllCoroutines();

		text.text = txt;

	}

	private IEnumerator AppearText()

	{

		char[] arr = content.ToCharArray();

		for(int i = 0; i<arr.Length; i++)

		{

			text.text += arr[i];

			yield return new WaitForSeconds(delay);

		}

	}

}