this is an explosion. a smoke bomb. it goes through a number of stages.
firstly, an effective bomb should have a start sequence, shown here with a bit of sparks flying out of the top. secondly, smoke doesnt just grow, it has to expand, like here. it is enveloping from the bomb.
thirdly, after wards, this goes for all smoke, it doesnt just shrink.... you idiots that shrink smoke are just lazy. it dissapates like so. smoke thats been around for the longest will go the first.
now to make it.
begin with just a simple ball or object thrown or dropped.
next it lights, to do this you can either draw a whisp of smoke or random sparks flying out.
then it explodes, smoke begins to build up and just folds over itself. and it grows like so.
finally, when either the whole screen is filled or the pit or whatever you want is filled (remember, smoke wont just stay in an area, its heavier than air so it will either dissapate or fill a place up.) it should then dissapate, as i said before, start with where the smoke has been for a while, and work slowley.
