AssetReference dropdown very slow when using custom asset reference

I wrote an AssetReferenceAudioClip and the drop down is exceedingly slow. Is there any way for me to speed it up or is this just a symptom of the validation?

Code (CSharp):

1. using System;
2. #if UNITY_EDITOR
3. using UnityEditor;
4. #endif
5. using UnityEngine;
6. using UnityEngine.AddressableAssets;
7.  
8. namespace Addressable
9. {
10.     /// <summary>
11.     /// AudioClip AssetReference.
12.     /// </summary>
13.     [Serializable]
14.     public class AssetReferenceAudioClip : AssetReferenceT<AudioClip>
15.     {
16.         public AssetReferenceAudioClip(string guid) : base(guid) { }
17.  
18. #if UNITY_EDITOR
19.         public override bool ValidateAsset(string path)
20.         {
21.             Type mainAssetTypeAtPath = AssetDatabase.GetMainAssetTypeAtPath(path);
22.             if (typeof(AudioClip).IsAssignableFrom(mainAssetTypeAtPath))
23.             {
24.                 AudioClip clip = AssetDatabase.LoadAssetAtPath(path, typeof(AudioClip)) as AudioClip;
25.                 return clip != null;
26.             }
27.             return false;
28.         }
29. #endif
30.     }
31. }
32.  

 

You are loading every single audio clip, of course that's going to be slow. Why are you even trying to load the asset just to check its type twice?

 

I guess I must have coded this wrong. What I'd like to do is restrict the type of asset that can be assigned to this asset reference to only be sound files. How would that be achieved?

 

Code (CSharp):

1. return typeof(AudioClip).IsAssignableFrom(mainAssetTypeAtPath);

Does that not work?

 

Oh... Thanks! I must have copy pasted that from somewhere. That's so dumb. Thanks!