Fix scene transitions and add demoable transition between two scenes

Assets/Scripts/LevelChanger.cs

@@ -1,4 +1,3 @@
-using System.Collections;
 using UnityEngine;
 using UnityEngine.SceneManagement;
 
@@ -14,12 +13,12 @@ namespace Scampz.GameJam
     public void OnTriggerEnter(Collider collider)
     {
       animator.SetTrigger("FadeOut");
-      StartCoroutine(LoadScene(sceneIndex));
+      CharacterManager.Instance.LoadScene(sceneIndex, LoadSceneMode.Additive);
     }
 
     public void OnFadeComplete()
     {
-      StartCoroutine(LoadScene(sceneIndex));
+      CharacterManager.Instance.LoadScene(sceneIndex, LoadSceneMode.Additive);
     }
 
     private void Awake()
@@ -29,27 +28,5 @@ namespace Scampz.GameJam
       else
         Singleton = this;
     }
-
-    private void FadeToLevel()
-    {
-      animator.SetTrigger("FadeOut");
-    }
-
-    private IEnumerator LoadScene(int levelIndex)
-    {
-
-      yield return null;
-
-      var loadSceneOperation = SceneManager.LoadSceneAsync(levelIndex);
-      loadSceneOperation.allowSceneActivation = false;
-      while (!loadSceneOperation.isDone)
-      {
-        if (loadSceneOperation.progress >= 0.9f)
-          break;
-      }
-
-      loadSceneOperation.allowSceneActivation = true;
-      yield return loadSceneOperation;
-    }
   }
 }