collide with some but not others...

I have some ‘clouds’ as background images with a small transition moving up the screen and then I have some balls falling down plus a main player (which the balls should collide with).

The problem, is that all is being colliding with each other…any ideas?

Thanks,
RD [import]uid: 7856 topic_id: 4254 reply_id: 304254[/import]

look up collision index / collision filter in the docs [import]uid: 6645 topic_id: 4254 reply_id: 13259[/import]