Main Menu with loading screen

Assets/Scripts/LoadingScreen.cs

@@ -0,0 +1,104 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.SceneManagement;
+using UnityEngine.UI;
+public class LoadingScreen : MonoBehaviour
+{
+    public static LoadingScreen instance {get; private set;}
+    private IProgressBar progress;
+    [SerializeField]private Text loadingProgressTxt;
+    [SerializeField]private Transform progressBar;
+
+    void Awake(){
+        if(instance != null){Destroy(gameObject);return;}
+        instance =this;
+        canvasGroup = GetComponent<CanvasGroup>();
+
+        Application.targetFrameRate = 60;
+
+        progress = progressBar.GetComponent<IProgressBar>();
+        if(progress==null){Debug.LogError("NO IProgressBar interface found on " + progressBar.name);}
+    }
+
+    
+    void Start()
+    {
+        DontDestroyOnLoad(gameObject);
+    }
+
+    public static void LoadLevel(string levelName){
+        if(instance==null){Debug.LogError("No loading screen found, Raw load"); SceneManager.LoadScene(levelName); return;}
+
+        instance.loadLevel(levelName);
+    }
+
+    public void loadLevel(string levelName){
+        if (loading) { return; }
+        loading = true;
+        StartCoroutine(_loadlLevel(levelName));
+    }
+
+    public static bool loading {get; private set;}
+    private CanvasGroup canvasGroup;
+    IEnumerator _loadlLevel(string levelName)
+    {
+        // AudioManager.instnace.SetMusic(-1);
+        loading = true;
+        canvasGroup.alpha = 0;
+        canvasGroup.blocksRaycasts = true;
+        
+        SetProgress(0);
+        while (canvasGroup.alpha < 1f)
+        {
+            canvasGroup.alpha += 0.03f;
+            yield return new WaitForFixedUpdate();
+        }
+
+        AsyncOperation asyncOperation = SceneManager.LoadSceneAsync(levelName);
+
+        while (!asyncOperation.isDone)
+        {
+            SetProgress(asyncOperation.progress);
+            yield return null;
+        }
+        Debug.Log("Loaded scene " + levelName);
+        // yield return new WaitForSecondsRealtime(2f);
+        while(progress.Progress < 1){
+            SetProgress( progress.Progress+0.01f);
+            yield return new WaitForSeconds(0.1f);
+        }
+
+        canvasGroup.blocksRaycasts = false;
+
+        while (canvasGroup.alpha > 0)
+        {
+            canvasGroup.alpha -= 0.03f;
+            yield return new WaitForSecondsRealtime(0.015f);
+
+        }
+        Debug.Log("Loading scene vanishing");
+
+        loading = false;
+    }
+
+    void SetProgress(float value)
+    {
+        // progre.fillAmount = value;
+        progress.SetProgress(value);
+
+        if(loadingProgressTxt!=null)loadingProgressTxt.text = (int)(value * 100) + "%";
+    }
+
+}
+
+
+
+public interface IProgressBar{
+
+    public void SetProgress(float progress){
+    }
+
+    public float Progress {get;}
+
+}