Unity Editor Autosave

AutoSave.cs

using UnityEngine;
using UnityEditor;
using UnityEditor.SceneManagement;

[InitializeOnLoad]
public class AutoSave : ScriptableWizard
{
	private static float autoSaveDelay = 15.0f;
	private static double timeSinceAutoSave;
	private static bool sEnabled;

	public float delay = autoSaveDelay;
	public bool enabled = sEnabled;

	[MenuItem ("File/Autosave..")]
	static void OpenWizard () {
		ScriptableWizard.DisplayWizard<AutoSave>("Autosave", "Apply");
	}

	void OnWizardCreate () {
		sEnabled = enabled;
		autoSaveDelay = delay;
		Debug.Log("Autosaving " + (enabled ? "enabled." : "disabled."));
	}

	static AutoSave() {
		EditorApplication.update += Update;
		timeSinceAutoSave = EditorApplication.timeSinceStartup;
	}

	static void Update ()
	{
		var now = EditorApplication.timeSinceStartup;
		if (sEnabled && now > timeSinceAutoSave + autoSaveDelay) {
			Debug.Log("Autosaving..");
			EditorApplication.SaveAssets();
			EditorSceneManager.SaveOpenScenes();
			timeSinceAutoSave = now;
		}
	}
}