Implement scene transitions

Assets/Common/Scripts/MainMenuScreen.cs

@@ -1,11 +1,32 @@
 using System.IO;
 using UnityEngine;
+using UnityEngine.Playables;
 
 /// <summary>
 /// StartScreen scene manager 
 /// </summary>
 public class MainMenuScreen : MonoBehaviour
 {
+    /// <summary>
+    /// Reference to the enter animation scene playable director
+    /// </summary>
+    public PlayableDirector directorEnterFromBoot;
+
+    /// <summary>
+    /// Reference to the enter animation scene playable director
+    /// </summary>
+    public PlayableDirector directorEnterFromCourseMenu;
+
+    /// <summary>
+    /// Reference to the enter animation scene playable director
+    /// </summary>
+    public PlayableDirector directorEnterFromListMinigames;
+
+    /// <summary>
+    /// Reference to the enter animation scene playable director
+    /// </summary>
+    public PlayableDirector directorEnterFromSettings;
+
     /// <summary>
     /// Check on load whether a user is already present, 
     /// if not load the UserCreationScreen scene so the user can create a new account
@@ -19,6 +40,22 @@ public class MainMenuScreen : MonoBehaviour
         }
     }
 
+    /// <summary>
+    /// Start is called before the first frame update
+    /// </summary>
+    void Start()
+    {
+        var sys = SystemController.GetInstance();
+        if (sys.previousScene == SystemController.GetSceneIndex("Common/Scenes/Boot"))
+            directorEnterFromBoot.Play();
+        else if (sys.previousScene == SystemController.GetSceneIndex("Common/Scenes/CoursesMenuScreen"))
+            directorEnterFromCourseMenu.Play();
+        else if (sys.previousScene == SystemController.GetSceneIndex("Common/Scenes/ListMinigamesScreen"))
+            directorEnterFromListMinigames.Play();
+        else if (sys.previousScene == SystemController.GetSceneIndex("Common/Scenes/SettingsScreen"))
+            directorEnterFromSettings.Play();
+    }
+
     /// <summary>
     /// Quit the application
     /// </summary>