Add support for separate PreloadData

https://github.com/Perfare/AssetStudio/issues/690

https://docs.unity.cn/550/Documentation/Manual/AssetBundleInternalStructure.html

AssetStudio/AssetsManager.cs

@@ -532,6 +532,9 @@ namespace AssetStudio
                             case ClassIDType.PlayerSettings:
                                 obj = new PlayerSettings(objectReader);
                                 break;
+                            case ClassIDType.PreloadData:
+                                obj = new PreloadData(objectReader);
+                                break;
                             case ClassIDType.RectTransform:
                                 obj = new RectTransform(objectReader);
                                 break;

AssetStudio/Classes/AssetBundle.cs

@@ -1,7 +1,4 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
+using System.Collections.Generic;
 
 namespace AssetStudio
 {
@@ -23,22 +20,47 @@ namespace AssetStudio
     {
         public PPtr<Object>[] m_PreloadTable;
         public KeyValuePair<string, AssetInfo>[] m_Container;
+        public string m_AssetBundleName;
+        public string[] m_Dependencies;
+        public bool m_IsStreamedSceneAssetBundle;
 
         public AssetBundle(ObjectReader reader) : base(reader)
         {
             var m_PreloadTableSize = reader.ReadInt32();
             m_PreloadTable = new PPtr<Object>[m_PreloadTableSize];
-            for (int i = 0; i < m_PreloadTableSize; i++)
+            for (var i = 0; i < m_PreloadTableSize; i++)
             {
                 m_PreloadTable[i] = new PPtr<Object>(reader);
             }
 
             var m_ContainerSize = reader.ReadInt32();
             m_Container = new KeyValuePair<string, AssetInfo>[m_ContainerSize];
-            for (int i = 0; i < m_ContainerSize; i++)
+            for (var i = 0; i < m_ContainerSize; i++)
             {
                 m_Container[i] = new KeyValuePair<string, AssetInfo>(reader.ReadAlignedString(), new AssetInfo(reader));
             }
+
+            var m_MainAsset = new AssetInfo(reader);
+
+            if (version[0] > 4 || (version[0] == 4 && version[1] >= 2)) //4.2 and up
+            {
+                var m_RuntimeCompatibility = reader.ReadUInt32();
+            }
+
+            if (version[0] >= 5) //5.0 and up
+            {
+                m_AssetBundleName = reader.ReadAlignedString();
+
+                var m_DependenciesSize = reader.ReadInt32();
+                m_Dependencies = new string[m_DependenciesSize];
+
+                for (var i = 0; i < m_DependenciesSize; i++)
+                {
+                    m_Dependencies[i] = reader.ReadAlignedString();
+                }
+
+                m_IsStreamedSceneAssetBundle = reader.ReadBoolean();
+            }
         }
     }
 }

AssetStudio/Classes/PreloadData.cs

@@ -0,0 +1,35 @@
+namespace AssetStudio
+{
+    public sealed class PreloadData : NamedObject
+    {
+        public PPtr<Object>[] m_Assets;
+
+        public PreloadData(ObjectReader reader) : base(reader)
+        {
+            var m_PreloadTableSize = reader.ReadInt32();
+            m_Assets = new PPtr<Object>[m_PreloadTableSize];
+            for (var i = 0; i < m_PreloadTableSize; i++)
+            {
+                m_Assets[i] = new PPtr<Object>(reader);
+            }
+
+            /*
+            if (version[0] >= 5) //5.0 and up
+            {
+                var m_DependenciesSize = reader.ReadInt32();
+                var m_Dependencies = new string[m_DependenciesSize];
+
+                for (var i = 0; i < m_DependenciesSize; i++)
+                {
+                    m_Dependencies[i] = reader.ReadAlignedString();
+                }
+            }
+
+            if (version[0] > 2018 || (version[0] == 2018 && version[1] >= 2)) //2018.2 and up
+            {
+                var m_ExplicitDataLayout = reader.ReadBoolean();
+            }
+            */
+        }
+    }
+}