It's pretty simple -- there's a 2d array to record the pattern
and a sample bank preloaded with sounds using ESS.
It checks the time elapsed for stepping.
It seems to work OK but flakes out at 180 bpm or so.
Any tips for improving the timing?
Thanks!
code section follows (this is inside draw())
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  if (n >= last_clock + 60 * 1000 / (2 * bpm)) {
     cursor += 1;
     last_clock = n;
     for (int i = 0; i < sample_bank.length; i += 1) {
       if (grid[cursor % num_cols][i] == 1) {
         sample_bank[i].stop();
         sample_bank[i].play();
       }
     }