Asset Usage Detector - Find references to an asset/object [Open Source]

Why did it have to be me....I don't see it in the windows menu. Are you meaning the windows menu next to the help menu because it's not listed. I am using 2018.3.8f1.

 

It is located there. If there are any error messages in the console, you must resolve those errors first.

 

Hello, after the last update was working but today it stopped to give results (always no results found). There is a way to delete the cached data?

 

Yes, it is located at PROJECT_PATH/Library/AssetUsageDetector.cache. It might be related to this bug: https://github.com/yasirkula/UnityAssetUsageDetector/issues/11

 

Hey, great work so far on the tool... can't wait to use it.

I've got it on Unity version 2019.2.2 and seem to be getting a crash bug no matter what asset I'm trying to search in the project view. Is there a fix available?

Thanks again for the hard work put into this so far!

InvalidCastException: Specified cast is not valid.
Model.Unit.Equals (System.Object obj) (at <8efbdbeaeed1474b83928e86de15dabc>:0)
System.Collections.Generic.ObjectEqualityComparer`1[T].LastIndexOf (T[] array, T value, System.Int32 startIndex, System.Int32 count) (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0)
System.Array.LastIndexOfImpl[T] (T[] array, T value, System.Int32 startIndex, System.Int32 count) (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0)
System.Array.LastIndexOf[T] (T[] array, T value, System.Int32 startIndex, System.Int32 count) (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0)
System.Array.LastIndexOf[T] (T[] array, T value, System.Int32 startIndex) (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0)
System.Collections.Generic.Stack`1[T].Contains (T item) (at <376e8c39bbab4f1193a569c8dbe4305c>:0)
AssetUsageDetectorNamespace.AssetUsageDetector.SearchObject (System.Object obj) (at Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:607)

 

Thanks for reporting this. I am unable to tell why this exception isn't caught by this catch block. Regardless, can you try applying the following script modifications to your project?

 

Super! Seems to be working great. Its already saving a ton of time.. some friends wonder why this kind of functionality isn't standard.

Great work!

 

Thanks, but removing the cache did not solve the issue.
Actually I have reverted to the old version without cache. (slower but works ...)

Let me know if you need some tests with the new version. In production we keep the old version meanwhile.

Best Regards

 

I'm sorry to hear that. Can you tell what kind of a reference the current version of the plugin fails to find?

 

Hello the asset was a Sprite linked directly in the Main scene and the issue is for sure related with the cache (old version works).

The project is a production project with several branches and I switch branch quite often (may be related?). Strange thing: if I delete the cache nothing change.

Let me know if you need some tests, in the meantime I am using the old one.

 

THANK YOU

you're a life saver!

Just what I needed!

 

@drambaldi I've found out that the Asset Store version of the plugin had a bug that caused the issue you are having. An update for the Asset Store version is under review, in the meantime I'd recommend you to update to the latest version from GitHub: https://github.com/yasirkula/UnityAssetUsageDetector/releases

 

Thank you so much @yasirkula, even after i buy some tool Finder with 15$, it's not better than your free asset. It's accurate and find what ever i want, just a little bit longer with huge project.

 

Thanks for this amazing open source asset!

I am testing version 1.5.6 and everything work correctly with the cache!

I have always strange issue because I work on a legacy project that is up from 2016 and there is a lot of legacy-old code unremoved ...

I have noticed this BUG, ONLY for one of my sprite (still investigating the issue to find the particlesystem that raise the error):

STEPS TO REPRODUCE
- Search for a sprite with Search properties public and Non-public with Scenes in build settings
- Select Include non-serializable fields and properties in search (slower search)
- The Asset Usage detector fail with ERROR:

NullReferenceException: Do not create your own module instances, get them from a ParticleSystem instance

Rethrow as TargetInvocationException: Exception has been thrown by the target of an invocation.

Staktrace

rethrow as TargetInvocationException: Exception has been thrown by the target of an invocation.","NullReferenceException: Do not create your own module instances, get them from a ParticleSystem instance

Rethrow as TargetInvocationException: Exception has been thrown by the target of an invocation.","ParticleSystem+TextureSheetAnimationModule.get_frameOverTime()    /Users/builduser/buildslave/unity/build/artifacts/generated/bindings_old/common/ParticleSystem/ParticleSystemBindings.gen.cs:2681

MonoMethod.Invoke()    /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:222

MonoMethod.Invoke()    /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoMethod.cs:232

MonoProperty.GetValue()    /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoProperty.cs:297

MonoProperty.GetValue()    /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Reflection/MonoProperty.cs:283

Utilities+<CreateGetter>c__AnonStorey0.<>m__0()    Assets/Plugins/AssetUsageDetector/Editor/Utilities.cs:337

VariableGetterHolder.Get()    Assets/Plugins/AssetUsageDetector/Editor/VariableGetter.cs:35

AssetUsageDetector.SearchFieldsAndPropertiesOf()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:1113

AssetUsageDetector.SearchObject()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:808

AssetUsageDetector.SearchFieldsAndPropertiesOf()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:1118

AssetUsageDetector.SearchComponent()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:918

AssetUsageDetector.SearchObject()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:789

AssetUsageDetector.SearchGameObject()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:850

AssetUsageDetector.SearchObject()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:787

AssetUsageDetector.BeginSearchObject()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:727

AssetUsageDetector.SearchGameObjectRecursively()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:712

AssetUsageDetector.SearchGameObjectRecursively()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:716

AssetUsageDetector.SearchGameObjectRecursively()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:716

AssetUsageDetector.SearchGameObjectRecursively()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:716

AssetUsageDetector.SearchGameObjectRecursively()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:716

AssetUsageDetector.SearchGameObjectRecursively()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:716

AssetUsageDetector.SearchGameObjectRecursively()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:716

AssetUsageDetector.SearchGameObjectRecursively()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:716

AssetUsageDetector.SearchGameObjectRecursively()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:716

AssetUsageDetector.SearchGameObjectRecursively()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:716

AssetUsageDetector.SearchScene()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:678

AssetUsageDetector.Run()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:544

Debug.LogException()

AssetUsageDetector.Run()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetector.cs:573

AssetUsageDetectorWindow.InitiateSearch()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetectorWindow.cs:529

AssetUsageDetectorWindow.OnGUI()    Assets/Plugins/AssetUsageDetector/Editor/AssetUsageDetectorWindow.cs:410

GUIUtility.ProcessEvent()"

Best Regards
Davide

 

Apparently, this happens when there is a variable of type ParticleSystem.TextureSheetAnimationModule in a class. Although I can prevent this issue from occurring via a hacky tweak, it would have a negative impact in the overall search performance. So I won't be implementing this fix. But we can let AssetUsageDetector continue the search despite this harmless error. It just a matter of changing VariableGetterHolder.Get function as follows:

Code (CSharp):

1. public object Get( object obj )
2. {
3.     try
4.     {
5.         return getter( obj );
6.     }
7.     catch( Exception e )
8.     {
9.         Debug.LogException( e );
10.         return null;
11.     }
12. }

This change will be included in the next release, as well.

 

@drambaldi The version with the fix (and numerous new features) is now released on GitHub: https://github.com/yasirkula/UnityAssetUsageDetector/releases. Asset Store version will be updated soon.

 

Hi @yasirkula, this is amazing. I'm not sure why Unity hasn't developed their internal asset search (even their Find Reference in Scenes seems broken). Thanks a lot for this!

 

I'm getting a stack overflow using this. And then my Unity crashes.
Also, the panel says "ERROR: Search was interrupted, check the logs" but the documentation doesn't mention where the logs are stored (unless it's referring to the Console/Unity logs).

 

Yes, it is Unity's logs in Console. When does Unity crash? A few seconds after seeing that message? Are you using the latest version of the plugin? There has been a few bugfixes for this issue.

 

Yep, just download it from the Asset Store yesterday. Unity doesn't crash it just freezes.
Here is an error log:

 

Can you add this function to line 1511 and see what it outputs:

Debug.Log( assetPath + " " + dependencies[i] );

 

Sorry but stack overflow + debug.log is not a good combo and ended up having to restart Unity. I think it happened on a terrain object or terrain data.

 

I've been trying to reproduce the issue on 2019.1 and 5.6 but couldn't succeed. Which Unity version are you using? Are you searching while in Play mode? If possible, could you replace

Debug.Log( assetPath + " " + dependencies[i] );

with

System.IO.File.AppendAllText( @"C:\Users\USERNAME\Desktop\log.txt", assetPath + " " + dependencies[i] + "\n" );

? Pinpointing the issue could really help here.

 

Sorry, I was using 2019.2.3f1. Searching in Edit mode. I already deleted a bunch of objects, so I can't really be of much more help unfortunately.

 

I've released a new version on GitHub. In addition to some other improvements, if an infinite loop is detected inside AssetHasAnyReference, plugin will now output some useful information to help debug the issue instead of raising a StackOverflowException.

 

I really love this asset. It works better than find usages in some IDEs, where there is usually well established syntactic data model to exploit. Bravo.

If it were me, I would take down the promise that it will always be free. Anybody who gets it free now can keep getting it free even if you decide to charge new customers. Why limit your future options that way?

Anyway, very nice asset.

 

Your support is much appreciated, thanks!

 

I will point out that it seems like it will find a reference to an asset if any asset with that same name has a reference. I fixed that by ensuring that the asset path was used as the object hash for an object that is also an asset.

 

I've created a test case as follows:



Searching for references of the Test/Subfolder/Cube.prefab's material only yields that prefab for me, not Test/Cube.prefab. Maybe in your case, the other asset with the same name had some other connection to the searched asset?

 

No. I verified there were no connections. When I went to where the tool said there was a connection, it was pointed toward the asset with the same name, not the one I was searching for.

Heres a more detailed version of the case:
1. Two folders. Each has a PNG asset with the exact same name. The only difference is that one of them is 128x128 and the other is 512x512.
2. Have a prefab with a reference to the 512x512 version.
3. Search for everything under the first folder (the 128x128).
4. It says it found a reference in the aforementioned asset.
5. Click into the asset and see that the aforementioned reference is the 512x512 version of the image.

 

I've created the following folder structure:



Assigned these textures to asset bundles to see if it makes any difference:




My material uses _Test1/ZomBunnyDiffuse texture. Searching for references of _Test2 folder doesn't yield any results for me.

May I ask which Unity version you are using? Are you using AssetBundles or Addressables systems? I suspect that the two textures in your case have the same "Instance ID", you can check if this is the case by switching to Debug mode in Inspector (right click Inspector tab) and inspecting the textures. Are you using any plugins that possibly might alter these textures' instanceIDs?

Thanks for the valuable feedback!

 

I was using 2019.3.0f6. Looking for the instance ID would require my spelunking my source-control history, as the purpose of finding usages (in my case) was to delete the low-resolution assets.

I'm skeptical that they have the instance ID. In the asset I was using, the 128x128 images came across as proper assets but the 512x512 assets were just in a .zip file full of PNGs. Unity had to generate new instance IDs when I dumped the images into a subfolder of Assets.

I could see in the code that the hash was being generated from the name and when I changed it to be based on the asset path, the problem went away.

Before:

Code (CSharp):

1. public static string Hash(this object obj)
2. {
3.   if (obj is Object)
4.     return obj.GetHashCode().ToString();
5.  
6.   return obj.GetHashCode() + obj.GetType().Name;
7. }
8.  

After:

Code (CSharp):

1. public static string Hash(this object obj)
2. {
3.   if (obj is Asset a)
4.     return "assetpath:" + a.assetPath;
5.  
6.   if (obj is Object)
7.     return obj.GetHashCode().ToString();
8.  
9.   return obj.GetHashCode() + obj.GetType().Name;
10. }
11.  

I do not (presently) use Asset Bundles. Nor is anything an Addressable..

 

I suppose another factor that may or may not matter is that the assets in question were referenced from overrides in a nested prefab.

 

Object.GetHashCode returns the object's instanceID which should be unique per each object (it isn't affected by name). So there can be two reasons for this bug to occur:

1. AssetUsageDetector actually did find a reference to the 512x512 image (so it didn't confuse it with the 128x128 image) but it wasn't a very obvious reference. I wish I could've seen the search results screen in Full path drawing mode but I guess it is too late for that now.
2. The comments inside GetHashCode mention edge cases:

It's actually possible to have multiple c# objects pointing to the same c++ object in some edge cases

. An edge case occurred in your case, resulting in duplicate instanceIDs.

I really don't think it was the 2nd case since googling for similar issues doesn't return anything. But if it was the 2nd case, I'd prefer to first understand when these edge cases occur, see if it can be prevented in a better way and only then use asset path as hash if necessary.

Thanks for providing me with details about this bug. Let's see if someone else stumbles upon this bug and see if they also suffer from the 2nd case.

 

Saved me a lot of time, thanks you

 

There is also this open source tool on github. It may not look like it has a many features at first, but it is easier to use and faster.
https://github.com/ogxd/project-curator

 

Does it also detect usage in timelines parts of a scene and assets?

 

Yes, I can find Timeline references in my tests.

 

Hello!
Thank you so much for this great extension!
I have a special use case though...
I'm in the process of converting my game to Addressables, and I need to find all direct references to specific types (instead of objects). For example I'd like to find every script in a scene that references prefabs (in general, not one in particular)...
Would that be possible with your tool ?

 

It is not possible without refactoring the code. In this example, it might be easier to type "t:GameObject" into the Project window's searchbar and drag&drop the results to the "Find references of" field of Asset Usage Detector window (you can also drag&drop folders there, contents of the folder will be included in the search).

 

Looks cool, and I'm so sick of Unity's "Find References in Scene" not working for the most simple things like fonts.

What does "Restore initial scene setup..." that I see in the screenshots mean? the tool modifies the scene?

Thanks.

 

If references are found in multiple scenes, these scenes are loaded additively. If initially scene A was opened and after the search scenes A, B and C are opened, clicking the Reset Search button will automatically close scenes B and C if "Restore initial scene setup..." is enabled.

 

Hello i got a small problem (pretty big actually ), it seems that on some assets the plugin just freezes at the end of the loading bar. Its always the same assets, but i see no connection between those that work and those that dont. For example i have two animations in the same folder and i am running the search with the same options, for one everything works fine, it find references when they are there (if i delete this reference it works too) and for the other one it always freezes and i have to close unity in task manager. Any ideas? At least what to check out or something? I know i didnot give you much information, i am not getting any errors or something. I have unity 2019.4.0 LTS. Thanks in advance.

 

If the search doesn't conclude after 2 minutes, try adding the following function to this line so that we can see which objects the plugin is searching:

File.AppendAllText( "C:\\test.txt", "\n" + ( obj is Object ? ( ( (Object) obj ).name + " Unity " +  obj.GetType().Name ) : obj.GetType().Name ) );

 

It still does not look like anything specific. As i delete some assets or move something it always stops on some assets of random type (materials, meshes...). Sometimes its approx 60 000 th item sometimes 40 000... (its a pretty big project) and than it just stops and nothing happens... What should i look for ?

 

You can force refresh the cache by deleting the AssetUsageDetector.cache file inside Library folder (make sure that no Asset Usage Detector window is open while deleting the file). If it doesn't help and the test.txt file keeps being stuck at random files, I'm afraid I can't pinpoint the issue. Had it got stuck on a particular asset, it would be a useful information to debug the issue but getting stuck on random assets doesn't help. Is it possible that all those problematic assets that this plugin gets stuck on are part of a single particular plugin/package?

 

I already tried deleting cache, its not even dependent on the pc. Those assets it got stuck on were from my project (not any plugin or package), i was trying to delete those just to check if it will work or find another one (it always finds something else). Once it was a material in my material folder, other time it was just some random transform on one of my enemies skeletons... Do you have any more suggestions on what to try ? i really need this i have to clean up my project bcs my designers just kept putting random packs in assets folder and now its too big, and i am using 1% of them. And your plugin is the only one that i found that finds the exact dependecies i am lookin for.

 

Had this issue happened to me, I'd add more File.AppendAllText lines to different places, check the output and decide on where to put new File.AppendAllText lines to. I'd continue doing so until I saw recurring logs in the output. I can't recommend this to you since it would be very time consuming.

However, if you get the chance to run the search for 1-2 hours, I'm optimistic that it would result in an exception like StackOverflowException. Or, if the search still doesn't conclude, test.txt will probably have a repeating pattern. You can copy the last 5-10 lines and search the rest of the file to see if those lines repeat themselves at regular intervals.

 

Hello, so i tried a lot of things... but did not find anything interesting, there are no new lines in the log file even after a long time of runing... also it looks like its running the same amount of time on assets it works on as those it does not work on. could maybe some timeout work ? just force quit the search ? i think i would not mind if it does not find all of the ussages if it finds at least most of them .

 

If you enable the "Show detailed progress bar" option, you should be able to stop the search before it finishes.

Come to think of it, maybe one other way to debug the issue would be to use Visual Studio's debugger:

• add the following condition to numerous places in AssetUsageDetector.cs (you can pick as many random places as you want, the more the better):

Code (CSharp):

1. if( EditorApplication.timeSinceStartup - searchStartTime > 300 )
2.     searchStartTime = EditorApplication.timeSinceStartup;

• set a breakpoint at each of these

  searchStartTime = EditorApplication.timeSinceStartup;

  lines
• attach Visual Studio to Unity
• now, after you start a search, Visual Studio will pause the search every 5 minutes (300 seconds). You can then see a lot of information about the current state of the search in Visual Studio like stacktrace and variable values (like callStack). You can inspect these values and try to figure out why the search never finishes