[BetterSceneLoader] Fix loading icon

src/BetterSceneLoader.Core/ImageGrid.cs

@@ -175,7 +175,7 @@ public void CreateUI(string name, int sortingOrder, string titleText)
             loadingIcon.transform.SetRect(0.1f, 0.1f, 0.9f, 0.9f);
             var loadiconTex = PngAssist.ChangeTextureFromByte(Resource.GetResourceAsBytes(typeof(ImageGrid).Assembly, "Resources.loadicon"));
             loadingIcon.sprite = Sprite.Create(loadiconTex, new Rect(0, 0, loadiconTex.width, loadiconTex.height), new Vector2(0.5f, 0.5f));
-            LoadingIcon.Init(loadingIcon, -5f);
+            LoadingIcon.Init(loadingPanel.gameObject, loadingIcon, -5f);
 
             imagelist = UIUtility.CreateScrollView("Imagelist", mainPanel.transform);
             imagelist.transform.SetRect(0f, 0f, 1f, 1f, marginSize, marginSize, -marginSize, -headerSize - marginSize / 2f);
@@ -306,11 +306,10 @@ private void PopulateGrid(bool forceUpdate = false)
 
         private IEnumerator LoadButtonsAsync(Transform parent, List<KeyValuePair<DateTime, string>> scenefiles)
         {
+            LoadingIcon.loadingCount++;
             foreach(var scene in scenefiles)
             {
-                LoadingIcon.loadingState[currentCategoryFolder] = true;
                 var uri = "file:///" + EncodePath(scene.Value);
-
 #if KKS
                 using(var uwr = UnityWebRequestTexture.GetTexture(uri, true))
                 {
@@ -334,8 +333,7 @@ private IEnumerator LoadButtonsAsync(Transform parent, List<KeyValuePair<DateTim
                 }
 #endif
             }
-
-            LoadingIcon.loadingState[currentCategoryFolder] = false;
+            LoadingIcon.loadingCount--;
         }
 
         private Button CreateSceneButton(Transform parent, Texture2D texture, string path)

src/BetterSceneLoader.Core/LoadingIcon.cs

@@ -1,64 +1,32 @@
-using System.Collections;
-using System.Collections.Generic;
-using System.Linq;
-using UnityEngine;
+using UnityEngine;
 using UnityEngine.UI;
 
 namespace BetterSceneLoader
 {
     public class LoadingIcon : MonoBehaviour
     {
-        public static void Init(Image image, float speed)
+        public static void Init(GameObject parent, Image image, float speed)
         {
-            var rotator = image.gameObject.AddComponent<LoadingIcon>();
-            rotator.image = image;
-            rotator.speed = speed;
+            var icon = parent.AddComponent<LoadingIcon>();
+            icon.image = image;
+            icon.speed = speed;
         }
 
-        public static readonly Dictionary<string, bool> loadingState = new Dictionary<string, bool>();
-        private bool rotate;
-        private bool prevState;
+        public static int loadingCount = 0;
         private Image image;
         private float speed;
 
-        private void Start()
-        {
-            image.enabled = false;
-            StartCoroutine(LoadingIndicator());
-        }
-
-        private IEnumerator LoadingIndicator()
-        {
-            while(true)
-            {
-                bool state = loadingState.Values.Contains(true);
-                if(state != prevState)
-                {
-                    prevState = state;
-                    rotate = state;
-
-                    if(state)
-                    {
-                        rotate = true;
-                        image.enabled = true;
-                    }
-                    else
-                    {
-                        rotate = false;
-                        image.enabled = false;
-                    }
-                }
-
-                yield return new WaitForSeconds(0.1f);
-            }
-        }
-
         private void Update()
         {
-            if(rotate)
+            if(loadingCount > 0)
             {
+                if(!image.enabled) image.enabled = true;
                 image.rectTransform.rotation *= Quaternion.Euler(0f, 0f, speed);
             }
+            else
+            {
+                if(image.enabled) image.enabled = false;
+            }
         }
     }
 }