Gearbox = class("Gearbox")

function Gearbox:initialize(options)
  options = options or {}

  self.ratios = options.ratios
  self.finalDrive = options.finalDrive

  self._linkedDiffs = {}

  self.gear = 0
end

function Gearbox:linkDiff(diff)
  table.insert(self._linkedDiffs, diff)
end

function Gearbox:shift(dir)

end

function Gearbox:setGear(gear)
  self.gear = gear
end

function Gearbox:update()
  
end