I don't know about an external tool, but you can write an editor script that reads in a file and based on that file creates objects in your scene. Rather than the format you have here, I'd recommend a Comma Separated Value file if not XML for input.
In the editor, all .NET file I/O commands are available. Here is a link on creating an Editor Window:
[http://docs.unity3d.com/Documentation/Components/editor-EditorWindows.html][1]
[1]: http://docs.unity3d.com/Documentation/Components/editor-EditorWindows.html
↧