fgm24/Assets/Scripts/Misc/MainMenuTransitionAnimation.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.InputSystem;

public class MainMenuTransitionAnimation : MonoBehaviour
{
    Animator animator;
    private void Start()
    {
        animator = GetComponent<Animator>();
    }

    private void Update()
    {
        // if coming from game over dont imediatly detect input
        if (Time.timeSinceLevelLoad < 1f)
            return;

        foreach (var controller in Gamepad.all)
        {
            if (controller.crossButton.IsPressed())
            {
                AnimationMainMenuStart();
            }
        }
    }

    public void AnimationMainMenuStart()
    {
        animator.SetTrigger("Start");

        StartCoroutine(WaitBeforeSceneChange());
    }

    private IEnumerator WaitBeforeSceneChange()
    {
        var animInfo = animator.GetCurrentAnimatorStateInfo(0);
        while (!(animInfo.normalizedTime >= 0.99f && animInfo.IsName("MenuTransition")))
        {
            animInfo = animator.GetCurrentAnimatorStateInfo(0);
            yield return new WaitForSecondsRealtime(0.1f);
        }

        AudioManager.Instance.StopAllAudio();
        SceneManager.LoadScene(1);
        //SceneManager.sceneLoaded += () => AudioManager.stop
    }
}