I've got this timer in draw():

 

 

The problem I'm having is that the for(j =0......) loop is being called every millisecond while the timer loop is alive. I really only want to update those values once for each time steptimer increments, otherwise those cells are being redrawn constantly until it does.

 

How do I do that? I'm totally lost on this after trying a million things..

 

I don't think its nessicary so I didn't paste the whole thing, but If you want to look at the full sketch it's here:

http://pastebin.com/ArRbtmen

There's also a working embed/demo of the sketch with the minim stuff removed (everything else is the same) here:

http://www.openprocessing.org/visuals/?visualID=30818