TitleHeader.cs

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

public class TitleHeader : MonoBehaviour
{

    public Image banner;
    public TextMeshProUGUI titleText;
    public string title { get { return titleText.text; } set { titleText.text = value; } }

    public enum DISPLAY_METHOD
    {
        instant,
        slowFade,
        typeWriter,
        floatingSlowFade
    }
    public DISPLAY_METHOD displayMethod = DISPLAY_METHOD.instant;
    public float fadeSpeed = 1;

    public void Show(string displayTitle)
    {
        title = displayTitle;

        if (isRevealing)
            StopCoroutine(revealing);

        if (!cachedBannerPos)
            cachedBannerOriginalPosition = banner.transform.position;

        revealing = StartCoroutine(Revealing());
    }

    public void Hide()
    {
        if (isRevealing)
            StopCoroutine(revealing);
        revealing = null;

        banner.enabled = false;
        titleText.enabled = false;

        if (cachedBannerPos)
            banner.transform.position = cachedBannerOriginalPosition;
    }

    public bool isRevealing { get { return revealing != null; } }
    Coroutine revealing = null;
    IEnumerator Revealing()
    {
        banner.enabled = true;
        titleText.enabled = true;
        //yield for the current display method.
        switch (displayMethod)
        {
            case DISPLAY_METHOD.instant:
                banner.color = GlobalF.SetAlpha(banner.color, 1);
                titleText.color = GlobalF.SetAlpha(titleText.color, 1);
                break;
            case DISPLAY_METHOD.slowFade:
                yield return SlowFade();
                break;
            case DISPLAY_METHOD.floatingSlowFade:
                yield return FloatingSlowFade();
                break;
            case DISPLAY_METHOD.typeWriter:
                yield return TypeWriter();
                break;
        }

        //title is displayed now.
        revealing = null;
    }

    IEnumerator SlowFade()
    {
        banner.color = GlobalF.SetAlpha(banner.color, 0);
        titleText.color = GlobalF.SetAlpha(titleText.color, 0);
        while (banner.color.a < 1)
        {
            banner.color = GlobalF.SetAlpha(banner.color, Mathf.MoveTowards(banner.color.a, 1, fadeSpeed * Time.unscaledDeltaTime));
            titleText.color = GlobalF.SetAlpha(titleText.color, banner.color.a);
            yield return new WaitForEndOfFrame();
        }
    }

    bool cachedBannerPos = false;
    Vector3 cachedBannerOriginalPosition = Vector3.zero;
    IEnumerator FloatingSlowFade()
    {
        banner.color = GlobalF.SetAlpha(banner.color, 0);
        titleText.color = GlobalF.SetAlpha(titleText.color, 0);

        float amount = 25f * ((float)Screen.height / 720f);
        Vector3 downPos = new Vector3(0, amount, 0);
        banner.transform.position = cachedBannerOriginalPosition - downPos;

        while (banner.color.a < 1 || banner.transform.position != cachedBannerOriginalPosition)
        {
            banner.color = GlobalF.SetAlpha(banner.color, Mathf.MoveTowards(banner.color.a, 1, fadeSpeed * Time.unscaledDeltaTime));
            titleText.color = GlobalF.SetAlpha(titleText.color, banner.color.a);

            banner.transform.position = Vector3.MoveTowards(banner.transform.position, cachedBannerOriginalPosition, 11 * fadeSpeed * Time.unscaledDeltaTime);
            yield return new WaitForEndOfFrame();
        }
    }

    IEnumerator TypeWriter()
    {
        banner.color = GlobalF.SetAlpha(banner.color, 1);
        titleText.color = GlobalF.SetAlpha(titleText.color, 1);
        TextArchitect architect = new TextArchitect(titleText, title);
        while (architect.isConstructing)
            yield return new WaitForEndOfFrame();
    }
}