Deserialization of ExposedReference<Tile> leads to EndOfFileException

[Albeoris]

During GetBaseField for this file:

result = AssetFileInfo
 ByteOffset = {long} 7687736
 ByteSize = {uint} 172
 IsReplacerPreviewable = {bool} false
 OldTypeId = {ushort} 0
 PathId = {long} 673
 Replacer = {IContentReplacer} null
 ReplacerType = {ContentReplacerType} None
 ScriptTypeIndex = {ushort} 0
 Stripped = {byte} 0
 TypeId = {int} 114
 TypeIdOrIndex = {int} 16

In the asset, I get EndOfFileException with such stack trace:

ThrowHelper.ThrowEndOfFileException()
Stream.ReadAtLeastCore()
BinaryReader.InternalRead()
BinaryReader.ReadInt64()
AssetsFileReader.ReadInt64()
AssetTypeTemplateField.ReadType() [7]
AssetTypeTemplateField.ReadType()
AssetTypeTemplateField.ReadType()
AssetTypeTemplateField.ReadType()
AssetTypeTemplateField.ReadType()
AssetTypeTemplateField.ReadType()
AssetTypeTemplateField.ReadType()
AssetTypeTemplateField.MakeValue()
AssetTypeTemplateField.MakeValue()
AssetsManager.GetBaseField()

The problem seems to have occurred when deserializing the "endTile" field because of strange PathId:

result = {List<AssetTypeValueField>} Count = 9
 [0] = {AssetTypeValueField} {Children: Count = 2  FieldName: "m_GameObject"  Value: null}
 [1] = {AssetTypeValueField} {Children: Count = 0  FieldName: "m_Enabled"  Value: {AsString: "1"}}
 [2] = {AssetTypeValueField} {Children: Count = 2  FieldName: "m_Script"  Value: null}
 [3] = {AssetTypeValueField} {Children: Count = 0  FieldName: "m_Name"  Value: {AsString: "Unit Movement Marker"}}
 [4] = {AssetTypeValueField} {Children: Count = 0  FieldName: "m_Time"  Value: {AsString: "33,6"}}
 [5] = {AssetTypeValueField} {Children: Count = 0  FieldName: "chosenPathType"  Value: {AsString: "1"}}
 [6] = {AssetTypeValueField} {Children: Count = 0  FieldName: "referenceType"  Value: {AsString: "0"}}
 [7] = {AssetTypeValueField} {Children: Count = 0  FieldName: "stopTimelineTillComplete"  Value: {AsString: "0"}}
 [8] = {AssetTypeValueField} {Children: Count = 1  FieldName: "endTile"  Value: null}
   [0] = {AssetTypeValueField} {Children: Count = 2  FieldName: "defaultValue"  Value: null}
     [0] = {AssetTypeValueField} {Children: Count = 0  FieldName: "m_FileID"  Value: {AsString: "10"}}
     [1] = {AssetTypeValueField} {Children: Count = 0  FieldName: "m_PathID"  Value: {AsString: "3834309553080054577"}}

And after that it led to an attempt to deserialize an array of the wrong size:

valueField = {AssetTypeValueField} {Children: Count = 3384  FieldName: "Array"  Value: null}
  Children = {List<AssetTypeValueField>} Count = 3384
  FieldName = {string} "Array"
capacity = {int} 13365
index = {int} 3384

This fields:

	[Token(Token = "0x4001D69")]
	[FieldOffset(Offset = "0x38")]
	[SerializeField]
	private ExposedReference<Tile> endTile;

	[Token(Token = "0x4001D6A")]
	[FieldOffset(Offset = "0x48")]
	[SerializeField]
	private ExposedReferenceHolder<Tile>[] tiles;

What can I do to help fix this problem?

Is there a way to disable the deserialization of certain types, as a workaround for problems like this?

[nesrak1]

What can I do to help fix this problem?

MonoBehaviour issues are difficult to solve. If the class is simple enough, you can copy all of the classes with only the fields into a new Unity project, build a bundle using that monobehaviour, and checking the type tree using UABEA's file info dialog. There, you would be able to compare and see what the mono template generator missed. Since I don't have this game, I wouldn't be able to do it as it requires having the assemblies as well. I also don't have any time to attempt this right now.

Is there a way to disable the deserialization of certain types, as a workaround for problems like this?

If you mean skipping certain fields in a class, the answer is no. You have to read all fields in order because there's no information about how to skip over fields you don't want to read.

[Albeoris]

@nesrak1 I confirmed it with 2021.3.19f1.

There is a simple Unity project, build artifacts and simple test application: ExposedReference_Test.zip

I tried to...

checking the type tree using UABEA's file info dialog

...but UABEA has crashed with Null Reference Exception when I tried to export dump. :/

[nesrak1]

...but UABEA has crashed with Null Reference Exception when I tried to export dump. :/

~~Make sure you're using nightly. There was a bug where certain versions were missing a field that wasn't null checked.~~

Ah, you said export dump. What I meant was Tools->Type Tree which shows the type tree for a given bundle (or just the list of types for non-bundles). The above suggestion only works for the Type Tree window.

[nesrak1]

Looks like PropertyName is special in that the C# struct stores the name as an int but it's actually serialized as a string. According to AssetStudio and AssetRipper, the only special case left to handle is SphericalHarmonicsL2.

Changes pushed for PropertyName for now.