Adding loading system

UOP1_Project/Assets/LoadingManager.cs

+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.UI;
+using UnityEngine.SceneManagement;
+
+public class LoadingManager : MonoBehaviour
+{
+    public GameObject loadingInterface;
+    public Image loadingProgressBar;
+    //List of the scenes to load 
+    List<AsyncOperation> scenesToLoad = new List<AsyncOperation>();
+
+    //List of the scenes name to load and unload
+    //Scenes to load and unload should be added/Removed to/from the list before calling load and unload methods
+    List<string> scenesToLoadNames = new List<string>();
+    List<string> scenesToUnLoadNames = new List<string>();
+
+    void Start()
+    {
+        StartMainMenu();
+    }
+
+    public void StartMainMenu()
+    {
+        scenesToLoadNames.Add("MainMenu");
+        LoadScenes(false);
+    }
+
+    public void StartLevel()
+    {
+        ShowLoadingScreen(true);
+        scenesToLoadNames.Add("Level1");
+        LoadScenes(true);
+        scenesToUnLoadNames.Add("MainMenu");
+        UnloadScenes();
+    }
+
+
+    public void LoadScenes(bool EnableLoadingBar)
+    {
+
+        for (int i = 0; i < scenesToLoad.Count; ++i)
+        {
+            //Add the scene to the list of scenes to load asynchronously in the background
+            scenesToLoad.Add(SceneManager.LoadSceneAsync(scenesToLoadNames[i], LoadSceneMode.Additive));
+            //Remove scene from list of scenes to load
+            scenesToLoadNames.Remove(scenesToUnLoadNames[i]);
+        }
+        //Track the progress for the bar
+        if (EnableLoadingBar)
+        {
+            StartCoroutine(LoadingScreen());
+        }
+    }
+
+    public void UnloadScenes()
+    {
+        for (int i = 0; i < scenesToLoad.Count; ++i)
+        {
+            //Add the scene to the list of scenes to unload asynchronously in the background
+            SceneManager.UnloadSceneAsync(scenesToUnLoadNames[i]);
+            //Remove scene from list of scenes to unload
+            scenesToUnLoadNames.Remove(scenesToUnLoadNames[i]);
+        }
+    }
+
+    public void ShowLoadingScreen(bool state)
+    {
+        loadingInterface.SetActive(state);
+    }
+
+    IEnumerator LoadingScreen()
+    {
+        float totalProgress = 0, newProgress = 0;
+        //When the scene reaches 0.9f, it means that it is loaded
+        //The remaining 0.1f are for the integration
+        while (totalProgress <= 0.9f)
+        {
+            //Get the latest progress value
+            totalProgress = newProgress;
+            //Reset the progress for the new values
+            newProgress = 0;
+            //Iterate through all the scenes to load
+            for (int i = 0; i < scenesToLoad.Count; ++i)
+            {
+                Debug.Log("check loading of scene " + i + " :" + scenesToLoad[i].isDone + "progress scene" + scenesToLoad[i].progress);
+                //Adding the scene progress to the total progress
+                newProgress += scenesToLoad[i].progress;
+                //the fillAmount for all scenes, so we devide the progress by the number of scenes to load
+                loadingProgressBar.fillAmount = totalProgress / scenesToLoad.Count;
+                Debug.Log("progress bar" + loadingProgressBar.fillAmount + "and value =" + totalProgress / scenesToLoad.Count);
+            }
+            yield return null;
+        }
+        //Hide progress bar when loading is done
+        ShowLoadingScreen(false);
+    }
+    public void ExitGame()
+    {
+        Application.Quit();
+    }
+}

UOP1_Project/Assets/LoadingManager.cs.meta

+fileFormatVersion: 2
+guid: 1672132dae377874db68251b10915ac3
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: