Group nodes

Hi Lubos,

Could you provide a set of nodes to handles objects based on groups? For example a node that retrieves which objects are included in a certain group or a node that adds certain objects into a certain group. That way we could for example mark some objects as ‘enemies’ and we can destroy all the objects on that group. I think this can be very powerful to build games in a much cleaner way.


i also need help whit that @lubos