GAMEN3-ValleyRunner_SanTi036/GAMEN3-ValleyRunner_SanTi036/Assets/Scripts/LoadingManager.cs

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

public class LoadingManager : MonoBehaviour
{
    public static string sceneToLoad;

    [Header("UI")]
    public TMP_Text continueText;
    public Image progressFill;
    public float minimumLoadTime = 2f;
    public TMP_Text tipText;

    [Header("Tips")]
    [TextArea(2, 4)]
    public string[] tips;

    void Start()
    {
        StartCoroutine(LoadAsync());
    }

    void Update()
    {
        if (progressFill != null)
            progressFill.fillAmount = Mathf.PingPong(Time.time, 1f);
    }


    IEnumerator LoadAsync()
    {
        AsyncOperation operation =
            SceneManager.LoadSceneAsync(sceneToLoad);

        operation.allowSceneActivation = false;

        float displayedProgress = 0f;

        if (continueText != null)
            continueText.gameObject.SetActive(false);

        if (tips.Length > 0 && tipText != null)
        {
            int randomIndex = Random.Range(0, tips.Length);
            tipText.text = "Tip: \n" + tips[randomIndex];
        }

        while (!operation.isDone)
        {
            float targetProgress = Mathf.Clamp01(operation.progress / 0.9f);

            displayedProgress = Mathf.MoveTowards(
                displayedProgress,
                targetProgress,
                Time.deltaTime * 0.5f
            );

            if (progressFill != null)
                progressFill.fillAmount = displayedProgress;

            if (displayedProgress >= 1f)
            {
                continueText.gameObject.SetActive(true);

                if (Input.anyKeyDown)
                {
                    operation.allowSceneActivation = true;
                }
            }

            yield return null;
        }
    }


}