I'm trying to check if a whole group is outside of the visible bounds, so i can process it for cleaning up memory. I've got my world bounds set to this: var w = window.innerWidth, h = window.innerHeight;game.world.setBounds(0, 0, w, h);I've tried a few things, but i guess what i'm looking for is something like "group.events.onOutOfBounds()" I realise this doesn't exist, but is there anything that would do the job? Is it possible to check if a group is out of bounds, or do i have to check everything in the group individually? Thanks