# File karel/world_maker.rb, line 141 def remove(x, y, all) canvas = $window.canvas avenue, street = scale(x, y) # puts street.to_s + ' ' + avenue.to_s if(street < 1 or avenue < 1 or street > $window.number_of_streets() or avenue > $window.number_of_streets()) return end if all $world.remove_all_beepers(street, avenue) canvas.update else if $world.beepers_at?(street, avenue) $world.remove_beeper(street, avenue) else $world.place_beepers(street, avenue, -1) end end end