Falling sand

Played around with my c++ falling sand game a bit today, got some interesting effects by giving each element a "Stickyness" from 1 to 6, and only allowing them to move if they are touching less other particles then that value, this is actually very effective and just changing the value from 3-4 moves it from this:

A kind of dry earthy sand:















to a more beachy kind of sand:















I thought it was quite kool anyway, this will be released once ive figured out how the hell to get my compiler to include the dll i use grr