Added basic scene transition

Assets/Scripts/Game/SceneController.cs

@@ -1,16 +1,15 @@
 using PashaBibko.Pacore.Attributes;
 using UnityEngine.SceneManagement;
 using System.Collections;
-using System.Diagnostics;
 using UnityEngine;
 using System;
-
 using Debug = UnityEngine.Debug;
 
 namespace Fruitomation.Game
 {
     [CreateInstanceOnStart] public class SceneController : MonoBehaviour
     {
+        private SceneControllerTransition Transition;
         private static SceneController Instance;
 
         private void Awake()
@@ -22,29 +21,59 @@ namespace Fruitomation.Game
             }
 
             Instance = this;
+            
+            Canvas canvas = gameObject.AddComponent<Canvas>();
+            canvas.renderMode = RenderMode.ScreenSpaceOverlay;
+            
+            GameObject overlayGo = new("Overlay");
+            overlayGo.transform.SetParent(canvas.transform);
+            
+            Transition = overlayGo.AddComponent<SceneControllerTransition>();
+            Transition.OnCreation(canvas);
         }
 
         private IEnumerator StartLoadInternal(string scene)
         {
-            Stopwatch sw = Stopwatch.StartNew();
             AsyncOperation operation = SceneManager.LoadSceneAsync(scene);
             if (operation == null)
             {
                 string error = $"Unknown scene [{scene}]";
                 throw new ArgumentException(error);
             }
-
+            
             operation.allowSceneActivation = false;
-            operation.completed += _ =>
-            {
-                sw.Stop();
-                Debug.Log($"Scene finished loading [Took {sw.ElapsedMilliseconds}ms]");
-            };
+            operation.completed += _ => StartCoroutine(EndLoadInternal());
+
+            Transition.GoingUp = false;
+            Time.timeScale = 0;
+            float lerp = 0f;
+
+            while (lerp < 1f)
+            {
+                lerp += Time.unscaledDeltaTime;
+                Transition.LerpValue = Mathf.Clamp01(lerp);
+                
+                yield return null; // Waits for next frame
+            }
 
-            yield return new WaitForSeconds(5f);
             operation.allowSceneActivation = true;
         }
 
+        private IEnumerator EndLoadInternal()
+        {
+            float lerp = 0f;
+            
+            while (lerp < 1f)
+            {
+                lerp += Time.unscaledDeltaTime;
+                Transition.LerpValue = Mathf.Clamp01(lerp);
+                
+                yield return null; // Waits for next frame
+            }
+
+            Time.timeScale = 1f;
+        }
+
         public static void StartLoadOf(string scene) => Instance.StartCoroutine(Instance.StartLoadInternal(scene));
     }
 }

Assets/Scripts/Game/SceneControllerTransition.cs

@@ -0,0 +1,37 @@
+using UnityEngine.UI;
+using UnityEngine;
+
+namespace Fruitomation.Game
+{
+    public class SceneControllerTransition : MonoBehaviour
+    {
+        private RectTransform CanvasRect;
+        private Canvas AttachedCanvas;
+        private RectTransform Rect;
+
+        public float LerpValue;
+        public bool GoingUp;
+        
+        public void OnCreation(Canvas canvas)
+        {
+            Image img = gameObject.AddComponent<Image>();
+            img.color = Color.black;
+            
+            CanvasRect = canvas.GetComponent<RectTransform>();
+            Rect = transform.GetComponent<RectTransform>();
+            AttachedCanvas = canvas;
+        }
+
+        private void Update()
+        {
+            Rect.anchoredPosition = GoingUp
+                ? new Vector2(0, +(CanvasRect.sizeDelta.y / 2f))
+                : new Vector2(0, -(CanvasRect.sizeDelta.y / 2f));
+            Rect.sizeDelta = new Vector2
+            (
+                CanvasRect.sizeDelta.x,
+                CanvasRect.sizeDelta.y * LerpValue * 2f
+            );
+        }
+    }
+}

Assets/Scripts/Game/SceneControllerTransition.cs.meta

@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 765ed0d0c98a495e84e05ef05468bbfc
+timeCreated: 1776107627