station_obscurum_unity/Assets/Scripts/MainMenu/MainMenuManager.cs

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

public class MainMenuManager : MonoBehaviour
{
    [SerializeField] private TMP_Text title;

    [SerializeField] private List<TMP_Text> textList = new();

    [SerializeField] private float dilateSpeed = 0.1f;

    [SerializeField] private Animator cover;

    private readonly string component = "_FaceDilate";
    private float dilate = -1;
    private readonly List<float> dilates = new();
    private float initDilate;
    private readonly List<float> initDilates = new();
    private bool transitioning;

    // Start is called before the first frame update
    private void Start()
    {
        //initDilate = title.fontSharedMaterials[0].GetFloat(component);
        initDilate = title.fontMaterials[0].GetFloat(component);


        foreach (var text in textList)
        {
            initDilates.Add(text.fontMaterials[0].GetFloat(component));
            dilates.Add(-1f);
        }

        textList[0].GetComponent<Button>().onClick.AddListener(LoadFirstLevel);
        textList[2].GetComponent<Button>().onClick.AddListener(ExitApp);
    }


    // Update is called once per frame
    private void Update()
    {
        //dilate = Mathf.Min(initDilate, dilate += Time.deltaTime);
        dilate = Mathf.Lerp(dilate, initDilate, Time.deltaTime * dilateSpeed);
        title.fontMaterials[0].SetFloat(component, dilate);
        for (var i = 0; i < textList.Count; i++)
        {
            dilates[i] = Mathf.Lerp(dilates[i], initDilates[i], Time.deltaTime * dilateSpeed);
            textList[i].fontMaterials[0].SetFloat(component, dilates[i]);
        }
    }

    private void LoadFirstLevel()
    {
        if (!transitioning)
        {
            cover.Play("Cover_load_out");
            transitioning = true;
            StartCoroutine(_LoadFirstLevel());
        }
    }

    private IEnumerator _LoadFirstLevel()
    {
        yield return new WaitForSeconds(4);
        SceneManager.LoadScene(1);
    }

    private void ExitApp()
    {
        Application.Quit();
    }
}