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Improve support for legacy Unity versions (WIP). Close #103

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This commit is contained in:
VaDiM
2026-04-20 03:03:51 +03:00
parent e92d96bb08
commit 36699541fa
39 changed files with 959 additions and 423 deletions
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AssetStudio/SerializedFile.cs
+53 -4
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@@ -69,6 +69,21 @@ namespace AssetStudio
{
reader.Endian = EndianType.LittleEndian;
}
switch (header.m_Version) //default unity versions
{
case SerializedFileFormatVersion.Unsupported:
throw new NotSupportedException();
case SerializedFileFormatVersion.Unknown_2:
case SerializedFileFormatVersion.Unknown_3:
version = new UnityVersion(1, 0); //probably not supported as well
break;
case SerializedFileFormatVersion.Unknown_5: //1.2 - 2.1 down
version = new UnityVersion(1, 6);
break;
case SerializedFileFormatVersion.Unknown_6: //2.1 - 3.0 down
version = new UnityVersion(2, 5);
break;
}
if (header.m_Version >= SerializedFileFormatVersion.Unknown_7)
{
var versionPos = reader.Position;
@@ -87,10 +102,6 @@ namespace AssetStudio
reader.ReadBytes(version.ToString().Length + 1);
}
}
else
{
version = new UnityVersion(2, 5, 0);
}
if (header.m_Version >= SerializedFileFormatVersion.Unknown_8)
{
var target = reader.ReadInt32();
@@ -236,6 +247,35 @@ namespace AssetStudio
userInformation = reader.ReadStringToNull();
}
//try to set unity version from BuildSettings (unity 2.0 - 3.0 down)
if (header.m_Version <= SerializedFileFormatVersion.Unknown_6)
{
var buildSettingsAsset = m_Objects.FirstOrDefault(x => (ClassIDType)x.classID == ClassIDType.BuildSettings);
if (buildSettingsAsset == null)
return;
var objReader = new ObjectReader(reader, this, buildSettingsAsset);
if (buildSettingsAsset.serializedType?.m_Type != null)
{
var settings = new BuildSettings(objReader, TypeTreeHelper.ReadTypeByteArray(objReader.serializedType.m_Type, objReader), Object.JsonOptions);
if (UnityVersion.TryParse(settings.m_Version, out var unityVer))
{
assetsManager.AutoLegacyVersion = unityVer.Major == 1 ? new UnityVersion(2, 1) : unityVer; //detected 1.x versions should mean unity-iphone
Logger.Debug($"Detected legacy version: {unityVer}");
}
}
else
{
objReader.Position = objReader.byteStart + objReader.byteSize - 8;
var buff = objReader.ReadBytes(8).AsSpan();
if (UnityVersion.TryParse(buff.ReadStringToNull(), out var unityVer))
{
assetsManager.AutoLegacyVersion = unityVer.Major == 1 ? new UnityVersion(2, 1) : unityVer;
Logger.Debug($"Detected legacy version: {unityVer}");
}
}
}
//reader.AlignStream(16);
}
@@ -318,6 +358,15 @@ namespace AssetStudio
m_Type.m_Nodes.Add(typeTreeNode);
typeTreeNode.m_Level = level;
typeTreeNode.m_Type = reader.ReadStringToNull();
if (header.m_Version <= SerializedFileFormatVersion.Unknown_6 && typeTreeNode.m_Type == "PPtr<EditorExtensionImpl>")
{
m_TargetPlatform = BuildTarget.NoTarget;
targetPlatformString = m_TargetPlatform.ToString();
}
if (header.m_Version == SerializedFileFormatVersion.Unknown_5 && (typeTreeNode.m_Type == "TransformComponent" || typeTreeNode.m_Type == "FileTexture"))
{
assetsManager.AutoLegacyVersion = assetsManager.AutoLegacyVersion ?? new UnityVersion(1, 2);
}
typeTreeNode.m_Name = reader.ReadStringToNull();
typeTreeNode.m_ByteSize = reader.ReadInt32();
if (header.m_Version == SerializedFileFormatVersion.Unknown_2)