Call a function when an asset is imported or moved

[drizztmainsword]

I’m using a folder-based structure for organizing and calling my in-game sounds. I use an XML file to direct an in-game sound manager to the correct files in the Resources folder.

I want to set it up so that the XML file is updated whenever a sound file is added or moved. I know I can use AssetPostprocessor to catch the sounds importing, but this doesn’t work when files are moved from one folder to another.

Where can I pick up the fact that a file has been moved?

[Ubahs]

I don’t know if there is a way to do that in Unity, but most OSes have something like a FileSystemWatcher. It takes a bit to get right, and shouldn’t be used for a game after development, but during development it could probably help you do what you need to be done.

This works:

using UnityEngine;
using UnityEditor;
using System.Collections;
using System.IO;

[InitializeOnLoad]
public class AssetWatcher : EditorWindow
{
    private static FileSystemWatcher assetFileWatcher;

    [MenuItem("Window/Asset Watcher")]
    static void Init()
    {
        AssetWatcher window = (AssetWatcher)EditorWindow.GetWindow(typeof(AssetWatcher));
        window.OnGUI();
    }

    void OnGUI()
    {
        OnEnableFileWatch();
    }

    static void OnEnableFileWatch()
    {
        if (assetFileWatcher == null)
        {
            string currentPath = Path.GetFullPath("Assets");
            assetFileWatcher = new FileSystemWatcher(currentPath);

            assetFileWatcher.Changed += OnAssetFileWatcherChanged;
            assetFileWatcher.Created += OnAssetFileWatcherChanged;
            assetFileWatcher.Deleted += OnAssetFileWatcherChanged;
            assetFileWatcher.Renamed += OnAssetFileWatcherChanged;
            
            assetFileWatcher.Filter = "*.*";
            assetFileWatcher.IncludeSubdirectories = true;
            assetFileWatcher.EnableRaisingEvents = true;
        }
    }

    static void OnAssetFileWatcherChanged(object sender, FileSystemEventArgs e)
    {
        // Do stuff here
    }
}