/// <summary>
/// Will create copies of everything in the object's reference graph using the following rules: anything
/// Unity can serialize (see Unity documentation on serialization for a complete list), but also
/// ScriptableObjects that are either direct references, or otherwise contained in a serializable type
/// belonging to the previous category. So as of this writing, a field containing a scriptable object adorned
/// with [SerializeField] or public, contained in an array or list, or a field in a serializable custom class
/// will be copied. Examples where a scriptable object will not be copied: as keys or values in a dictionary,
/// in a non-public field not marked with [SerializeField], in a non-serializable class.
/// </summary>
public static T CopyDeep <T>(this T obj) where T : ScriptableObject
{
obj = obj.CopyShallow();
var serializedObject = new SerializedObject(obj);
var iterator = serializedObject.GetIterator();
iterator.Next(true);
while (iterator.NextVisible(true))
{
if (iterator.propertyType == SerializedPropertyType.ObjectReference)
{
ScriptableObject so = iterator.objectReferenceValue as ScriptableObject;
if (so != null)
{
so = so.CopyDeep();
iterator.objectReferenceValue = so;
}
}
}
serializedObject.ApplyModifiedProperties();
return((T)serializedObject.targetObject);
}
