awegawrgaerg.rb

# Direction can either be a Fixnum for number of degrees,
# or a symbol for the direction (:left, :right)
def rotate(direction, speed: DEFAULT_SPEED)
  # handle symbols...
  case direction
    when :left
      direction = -90
    when :right
      direction = 90
  end

  circumfrence = 2 * Math::PI * RADIUS

  # based on the angle, this is how far we need to turn
  Math.abs(distance = (circumfrence / 360) * direction)

  direction < 0 ? spin_left(speed) : spin_right(speed)
  duration = distance / speed
  sleep(duration)
  halt
end