rabidus-test/Assets/UITextShow.cs

using System;
using System.Collections;
using System.Collections.Generic;
using System.Text;
using UnityEngine;

public class UITextShow : MonoBehaviour
{
    private TMPro.TextMeshProUGUI _text;

    private void Awake()
    {
        _text = GetComponent<TMPro.TextMeshProUGUI>();
    }

    public void SetText(string text)
    {
        _text.SetText(text);
    }

    public void ShowSubtitle(string text, float delay, float afterDelay, Action onStart, Action onEnd)
    {
        StartCoroutine(Subtitle_Coroutine(text, delay, afterDelay, onStart, onEnd));
    }

    public void ShowTimer(int time, string afterTimerText, float afterDelay, Action onStart, Action onEnd)
    {
        StartCoroutine(Timer_Coroutine(time, afterTimerText, afterDelay, onStart, onEnd));
    }

    private IEnumerator Timer_Coroutine(int time, string afterTimerText, float afterDelay, Action onStart, Action onEnd)
    {
        onStart?.Invoke();

        for (int i = time; i > 0; i--)
        {
            _text.SetText(i.ToString());
            yield return new WaitForSeconds(1);
        }

        _text.SetText(afterTimerText);
        yield return new WaitForSeconds(afterDelay);
        _text.SetText(string.Empty);
        onEnd?.Invoke();
    }

    private IEnumerator Subtitle_Coroutine(string text, float delay, float afterDelay, Action onStart, Action onEnd)
    {
        onStart?.Invoke();
        StringBuilder sb = new StringBuilder();

        for (int i = 0; i < text.Length; i++)
        {
            sb.Append(text[i]);
            _text.SetText(sb);
            yield return new WaitForSeconds(delay);
        }

        yield return new WaitForSeconds(afterDelay);
        _text.SetText(string.Empty);
        onEnd?.Invoke();
    }
}