Question by CrazyCGChick85 · Feb 07, 2019 at 07:50 AM · scripting problem scene-loading scene-switching scene-change

Switching back and fourth between scenes help (script)

I have been trying to find help on forums without much luck. I currently have 2 scenes.

Scene A loads first and I am able to move to scene B. However I would like to move back to scene A but I can't

Video showing the problem

This is my scene control script

 using System;
 using UnityEngine;
 using UnityEngine.SceneManagement;
 using System.Collections;
 
 public class SceneController : MonoBehaviour
 {
     public event Action BeforeSceneUnload; //Action have no parameters and no return type
     public event Action AfterSceneLoad;
 
 
     public CanvasGroup faderCanvasGroup;
     public float fadeDuration = 1f;
     public string startingSceneName = "Study";
     public string initialStartingPositionName = "DoorToCorridor";
     public SaveData playerSaveData;
 
     private bool isFading;
 
     private IEnumerator Start()
     {
         faderCanvasGroup.alpha = 1f;
 
         playerSaveData.Save(PlayerMovement.startingPositionKey, initialStartingPositionName);
 
         yield return StartCoroutine(LoadSceneAndSetActive(startingSceneName));
 
         StartCoroutine(Fade(0f));
     }
 
 
     public void FadeAndLoadScene(SceneReaction sceneReaction)
     {
         if (!isFading)
         {
             StartCoroutine(FadeAndSwitchScenes(sceneReaction.sceneName));
         }
     }
 
     private IEnumerator FadeAndSwitchScenes(string sceneName)
     {
         yield return StartCoroutine(Fade(1f));
 
         if (BeforeSceneUnload != null)
         {
             BeforeSceneUnload();
         }
         yield return SceneManager.UnloadSceneAsync(SceneManager.GetActiveScene().buildIndex);
 
         yield return StartCoroutine(LoadSceneAndSetActive(sceneName));
 
         if (AfterSceneLoad != null)
         {
             AfterSceneLoad();
         }
         yield return StartCoroutine(Fade(0f));
     }
 
     private IEnumerator LoadSceneAndSetActive(string sceneName)
     {
         yield return SceneManager.LoadSceneAsync(sceneName, LoadSceneMode.Additive);
 
         Scene newlyLoadedScene = SceneManager.GetSceneAt(SceneManager.sceneCount - 1);
         SceneManager.SetActiveScene(newlyLoadedScene);
     }
 
     private IEnumerator Fade(float finalAlpha)
     {
         isFading = true;
         faderCanvasGroup.blocksRaycasts = true;
 
         float fadeSpeed = Mathf.Abs(faderCanvasGroup.alpha - finalAlpha) / fadeDuration; //cacualting difference between canvas and final alpha and speed
 
         while (!Mathf.Approximately(faderCanvasGroup.alpha, finalAlpha)) //while not final alpha
         {
             faderCanvasGroup.alpha = Mathf.MoveTowards(faderCanvasGroup.alpha, finalAlpha, fadeSpeed * Time.deltaTime);
             yield return null;
         }
 
         isFading = false;
         faderCanvasGroup.blocksRaycasts = false;
     }
 }

I know the issue is with "Scene newlyLoadedScene = SceneManager.GetSceneAt(SceneManager.sceneCount - 1);" how do I change this line of code so I can move back and forth between the scenes.

I have been looking at a script for the 'Adventure Game' tutorial on the unity website and that is where I got the majority of the script from. It works fine in that tutorial scene but not in mine

Thanks in advance

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