Re: coping with symmetry

scooter <[EMAIL PROTECTED]> wrote in message news:<[EMAIL PROTECTED]>...
> On Tue, 14 Oct 2003 10:59:20 +0100, "Rob Agar"
> <[EMAIL PROTECTED]> wrote:
> 
> >I'm not sure how you'd do exactly what you want to do, but in a real world
> >situation would you even notice if the vehicle always steered to the left
> >(or always to the right) if it was heading _exactly_ towards a cone?
> >
> >if you had a rule
> >if STRAIGHT_AHEAD then STEER_LEFT
> >then the cone would be avoided, but the influence of the rule would be
> >insignificant so long as the STRAIGHT_AHEAD set is small enough
> >
> >Rob

Another way to handle this might be rules using NOT (condition), something like:

if STRAIGHT_AHEAD and NOT LEFT then STEER_LEFT
if STRAIGHT_AHEAD and NOT RIGHT then STEER_RIGHT
if NOT RIGHT and NOT LEFT then STEER_RIGHT

William Siler