Typewriter.cs

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using UnityEngine;
 
public class Typewriter : MonoBehaviour
{
    private UIText text;
 
    private float timer;
 
    private bool isStarted;
 
    private string current;
 
    private string original;
 
    private int index;
 
    public float speed;
 
    public SoundData sound;
 
    public bool IsFinished
    {
        get
        {
            if (isStarted)
            {
                return index >= original.Length;
            }
            return false;
        }
    }
 
    private void Awake()
    {
        text = GetComponent<UIText>();
    }
 
    public void OnSetText()
    {
        original = text.text;
        current = "";
        text.text = "";
        index = 0;
        timer = 0f;
        isStarted = true;
    }
 
    public void Skip()
    {
        if (isStarted)
        {
            text.text = original;
            index = original.Length;
        }
    }
 
    private void Update()
    {
        if (!isStarted)
        {
            return;
        }
        timer -= Time.unscaledDeltaTime;
        if (!(timer > 0f) && index < original.Length)
        {
            string text = original.Substring(index, 1);
            current += text;
            index++;
            this.text.text = current;
            float num = speed;
            if (text == "_comma".lang())
            {
                num *= 3f;
            }
            if (text == "_period".lang())
            {
                num *= 6f;
            }
            timer += num;
            if ((bool)sound)
            {
                sound.Play();
            }
        }
    }
}