FMOD: Cleaning up duplicate platform warning

VoodooDetective · January 14, 2021, 11:49pm

FMOD for Unity 2.01.07 seems to have broken the FMODStudioSettings class.

I can’t save in the editor without getting these errors:

FMOD: Cleaning up duplicate platform: ID  = playInEditor, name = 'Play In Editor Settings', type = PlatformPlayInEditor
ArgumentException: An item with the same key has already been added. Key: playInEditor
FMOD: Cleaning up duplicate platform: ID  = default, name = 'Default Settings', type = PlatformDefault
ArgumentException: An item with the same key has already been added. Key: default
NullReferenceException: Object reference not set to an instance of an object
FMODUnity.SettingsEditor.DisplayPlugins (System.String title, FMODUnity.Platform platform, FMODUnity.Platform+PropertyAccessor`1[T] property, System.Collections.Generic.Dictionary`2[TKey,TValue] expandState, System.String warning) (at Assets/Plugins/FMOD/src/Editor/SettingsEditor.cs:1028)

I believe this is a regression that basically makes the Unity integration unusable. Something to do with de-duplicating platforms in the Platforms map. At runtime there’s a series of NPEs related to platforms so actually I can’t run the game properly. Has anyone else run into this?

Stack Overflow here. I was unable to login to the forum for some reason so I posted there first.

cameron-fmod · January 17, 2021, 11:19pm

I’m unable to reproduce the results you are seeing. Are you able to share a screenshot of your FMOD Settings at all?

VoodooDetective · January 18, 2021, 8:46pm

No problem!

To reproduce:

I add all my platforms at the bottom of the settings
hit cmd+s, and it spits out those errors
try to remove those platforms, and I can’t remove iOS
try to delete the settings object, and it recreates without platforms.
hit cmd+s again, and it spits out those errors even without any platforms.

This seems to be unrecoverable, so I delete FMOD entirely, and then reinstall it.

Here’s the diff between the broken settings object, and the fresh install attached. I can reproduce the broken install by adding platforms and hitting cmd+s.

I’m on MacOS Catalina, Unity 2019.4.18f1. Here’s that diff.

diff --git a/Assets/Plugins/FMOD/Resources/FMODStudioSettings.asset b/Assets/Plugins/FMOD/Resources/FMODStudioSettings.asset
index c979a96b..8e3c4adb 100644
--- a/Assets/Plugins/FMOD/Resources/FMODStudioSettings.asset
+++ b/Assets/Plugins/FMOD/Resources/FMODStudioSettings.asset
@@ -1,320 +1,5 @@
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@@ -330,8 +15,8 @@ MonoBehaviour:
   SwitchSettingsMigration: 1
   HasSourceProject: 1
   HasPlatforms: 1
-  sourceProjectPath: FMODAssets/Voodoo Detective.fspro
-  sourceBankPath: FMODAssets/Build
+  sourceProjectPath: 
+  sourceBankPath: 
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   BankLoadType: 0
@@ -350,68 +35,8 @@ MonoBehaviour:
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-  Banks:
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+  MasterBanks: []
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@@ -419,382 +44,4 @@ MonoBehaviour:
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+  MigratedPlatforms: 0c000000150000000b0000000a00000009000000120000000800000005000000060000000200000001000000

cameron-fmod · January 20, 2021, 3:46am

Thanks very much for the information, unfortunately I am still unable to reproduce the issue.

Are you able to share a project that reproduces this at all? Preferably an empty project if possible.

VoodooDetective · January 20, 2021, 6:09am

I’ll try to get you a demo project tomorrow. Right now I can only reproduce it if I add a specific prefab to an empty scene. Perhaps some old information about the settings object is being serialized in the prefab and never updated.

I’ll work on it tomorrow. This bug is actually making it very difficult to use FMOD on my project.

VoodooDetective · January 21, 2021, 12:27am

Alright so I put together the bare minimum project I could that still reproduced the issue. I’m not prepared to share it on the open web, and in fact it still contains a lot of code/strings I can’t share.

If I delete the settings object, open an empty scene, and add/remove platforms, everything works. If I open a scene and add one of my prefabs to it, and do the same thing, I get the errors I mentioned.

I was reading the code in Settings.cs and it seems like the static initialization that happens when you’re creating a brand new settings object will populate the “Platforms” map while at the same time saving that map out to the Resources folder. Later, in OnEnable(), the Platform in the asset database will be == to the Platform of the same type in the Platforms map. So DestroyImmediate will destroy both the Platforms map instance of the Platform as well as the one loaded from the asset database resulting in an attempt to add “null” to the Platforms map multiple time.

VoodooDetective · January 21, 2021, 3:02am

OK so I’ve got that project I can’t really share with you, but I also put together this diff that I propose be applied to Settings.cs. I’d have made a pull request, but the github repo seems to be super far out of date.

diff --git a/Assets/Plugins/FMOD/src/Runtime/Settings.cs b/Assets/Plugins/FMOD/src/Runtime/Settings.cs
index 2641e926..c2843145 100644
--- a/Assets/Plugins/FMOD/src/Runtime/Settings.cs
+++ b/Assets/Plugins/FMOD/src/Runtime/Settings.cs
@@ -817,6 +817,10 @@ namespace FMODUnity
 
         private void PopulatePlatformsFromAsset()
         {
+            Platforms.Clear();
+            PlatformForBuildTarget.Clear();
+            PlatformForRuntimePlatform.Clear();
+
 #if UNITY_EDITOR
             string assetPath = AssetDatabase.GetAssetPath(this);
             UnityEngine.Object[] assets = AssetDatabase.LoadAllAssetsAtPath(assetPath);
@@ -827,36 +831,8 @@ namespace FMODUnity
 
             foreach (Platform newPlatform in assetPlatforms)
             {
-                Platform existingPlatform = FindPlatform(newPlatform.Identifier);
-
-                if (existingPlatform != null)
-                {
-                    // Duplicate platform; clean one of them up
-                    Platform platformToDestroy;
-
-                    if (newPlatform.Active && !existingPlatform.Active)
-                    {
-                        Platforms.Remove(existingPlatform.Identifier);
-
-                        platformToDestroy = existingPlatform;
-                        existingPlatform = null;
-                    }
-                    else
-                    {
-                        platformToDestroy = newPlatform;
-                    }
-
-                    Debug.LogWarningFormat("FMOD: Cleaning up duplicate platform: ID  = {0}, name = '{1}', type = {2}",
-                        platformToDestroy.Identifier, platformToDestroy.DisplayName, platformToDestroy.GetType().Name);
-
-                    DestroyImmediate(platformToDestroy, true);
-                }
-
-                if (existingPlatform == null)
-                {
-                    newPlatform.EnsurePropertiesAreValid();
-                    Platforms.Add(newPlatform.Identifier, newPlatform);
-                }
+                newPlatform.EnsurePropertiesAreValid();
+                Platforms.Add(newPlatform.Identifier, newPlatform);
             }
 
 #if UNITY_EDITOR

cameron-fmod · January 21, 2021, 5:21am

Thanks for sharing that, we will look into it.

ben_fmod · January 22, 2021, 4:10am

I’m not sure if I understand correctly, but it sounds like you might have more than one Settings asset in your project. Is that the case? If so, that will be the cause of the issue - Settings is intended to be a singleton object.

If that is not the case, can you give us any more information about the prefab that triggers the issue? Are you able to share the project (or just the prefab) via a private upload? If you register your project at https://fmod.com/profile#projects, you should then be able to upload files at https://fmod.com/profile#uploads.

VoodooDetective · January 22, 2021, 4:40am

Thanks for taking a look! So there’s definitely only one settings file in my projects and I can delete it repeatedly and still reproduce the issue (when a scene with the prefab is loaded). If I completely unpack the prefab without changing anything else, that also solves the problem. It maybe more than one prefab too. But the contents of the prefab doesn’t seem to matter. If I unpack it, or delete a number of objects form inside it, or remove a component from it, the problem goes away. Doesn’t matter that the prefab has NO FMOD code in it.

I have no idea what’s causing the problem and haven’t had time to dig further. I can share the project with you, but someone would need to sign an NDA. I’m not sure who though. I guess whomever was going to look at the project?

Just to be clear though, that diff I posted did make the problem go away. Do you see anything in the diff that would cause FMOD to stop working, or am I safe to go forward using the diff?

ben_fmod · January 28, 2021, 2:47am

OK, great! We’re happy to sign an NDA. Please email support@fmod.com with a link to this forum thread and we’ll take it from there.

I don’t think that diff will eliminate the duplicate platforms from the asset - you’re just not seeing the warnings any more because the code that checks for duplicates is gone.

VoodooDetective · January 30, 2021, 1:39am

Oh great! I’ll do that. My lawyer’s just drawing up our NDA and I should have it ready for next week. I also have the project ready to share.

To your second point, I think there’s a real problem with the duplicate check.

It’s not comparing the platform objects directly for equality. What’s on disk and what’s in memory are exactly the same objects in my case. So when you destroy one, you destroy both. That causes the errors for me.

I also don’t quite understand why at that stage of execution it’s a good idea to attempt to deduplicate in the first place. It seems like that function was intended to reset what’s in memory entirely and reload from disk.

But of course, I didn’t write the code so I have no idea the original intention.

VoodooDetective · February 10, 2021, 11:51pm

Sorry for the delay, it took my lawyer longer than expected. I sent over the NDA. Just shoot it back and I can share the project.

VoodooDetective · February 19, 2021, 1:21am

Hey there, I never got a reply from support.

VoodooDetective · February 26, 2021, 5:43pm

Sorry to be a nuisance, I just wanted to be sure someone saw my email. I sent it quite some time ago.