Implement touch sensitivity

[GoogleCodeExporter]

Use the touch sensitivity of the DS screen to play notes on the keyboard, or 
for creating envelopes, or anything else.  The touch sensitivity could be a 
useful or fun tool for Nitrotracker!

Original issue reported on code.google.com by tylerrau...@gmail.com on 1 Sep 2010 at 8:36

[GoogleCodeExporter]

Yeah, it could be like the note velocity on a MIDI keyboard. Cause then when 
you record a note to the arrangement it could have its volume set to the note 
velocity. I doesn't even need to be that good. I could be like an 
experimental/optional thing you can turn on and off.

Original comment by mark.pid...@gmail.com on 27 Nov 2010 at 2:59