Start points

Noticed we don't initialize p, so I think that loop will run with
whatever trash p gets (probably 0).

I made the start points 0,0 but it will probably not be in reality.
broadcast point

broadcast message "x:<xcoord> y:<ycoord>" of point so Tim can put it on
the app

Nick... still don't know if any of this compiles. But I believe in you.