fixed SpriteAtlas

AssetStudio/Classes/PPtr.cs

@@ -1,4 +1,6 @@
-namespace AssetStudio
+using System;
+
+namespace AssetStudio
 {
     public sealed class PPtr<T> where T : Object
     {
@@ -86,5 +88,44 @@
             result = null;
             return false;
         }
+
+        public void Set(T m_Object)
+        {
+            var name = m_Object.assetsFile.upperFileName;
+            if (string.Equals(assetsFile.upperFileName, name, StringComparison.Ordinal))
+            {
+                m_FileID = 0;
+            }
+            else
+            {
+                m_FileID = assetsFile.m_Externals.FindIndex(x => string.Equals(x.fileName, name, StringComparison.OrdinalIgnoreCase));
+                if (m_FileID == -1)
+                {
+                    assetsFile.m_Externals.Add(new FileIdentifier
+                    {
+                        fileName = m_Object.assetsFile.fileName
+                    });
+                    m_FileID = assetsFile.m_Externals.Count;
+                }
+                else
+                {
+                    m_FileID += 1;
+                }
+            }
+
+            var assetsManager = assetsFile.assetsManager;
+            var assetsFileList = assetsManager.assetsFileList;
+            var assetsFileIndexCache = assetsManager.assetsFileIndexCache;
+
+            if (!assetsFileIndexCache.TryGetValue(name, out index))
+            {
+                index = assetsFileList.FindIndex(x => x.upperFileName == name);
+                assetsFileIndexCache.Add(name, index);
+            }
+
+            m_PathID = m_Object.m_PathID;
+        }
+
+        public bool IsNull() => m_PathID == 0 || m_FileID < 0;
     }
 }

AssetStudio/Classes/SpriteAtlas.cs

@@ -33,14 +33,16 @@ namespace AssetStudio
 
     public sealed class SpriteAtlas : NamedObject
     {
+        public PPtr<Sprite>[] m_PackedSprites;
         public Dictionary<KeyValuePair<Guid, long>, SpriteAtlasData> m_RenderDataMap;
 
         public SpriteAtlas(ObjectReader reader) : base(reader)
         {
             var m_PackedSpritesSize = reader.ReadInt32();
+            m_PackedSprites = new PPtr<Sprite>[m_PackedSpritesSize];
             for (int i = 0; i < m_PackedSpritesSize; i++)
             {
-                new PPtr<Sprite>(reader);
+                m_PackedSprites[i] = new PPtr<Sprite>(reader);
             }
 
             var m_PackedSpriteNamesToIndex = reader.ReadStringArray();

AssetStudioGUI/Studio.cs

@@ -168,6 +168,18 @@ namespace AssetStudioGUI
                             ab = m_AssetBundle;
                             assetItem.Text = ab.m_Name;
                             break;
+                        case SpriteAtlas m_SpriteAtlas:
+                            foreach (var m_PackedSprite in m_SpriteAtlas.m_PackedSprites)
+                            {
+                                if (m_PackedSprite.TryGet(out var m_Sprite))
+                                {
+                                    if (m_Sprite.m_SpriteAtlas.IsNull())
+                                    {
+                                        m_Sprite.m_SpriteAtlas.Set(m_SpriteAtlas);
+                                    }
+                                }
+                            }
+                            break;
                         case NamedObject m_NamedObject:
                             assetItem.Text = m_NamedObject.m_Name;
                             break;