Implementing starfall version of engine

koptilnya/engine/gearboxes/auto.txt

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+-- @include ./base.txt
+require("./base.txt")
+
+AutomaticGearbox = class("AutomaticGearbox")

koptilnya/engine/gearboxes/base.txt

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+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

koptilnya/engine/gearboxes/cvt.txt

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+-- @include ./base.txt
+require("./base.txt")
+
+CVT = class("CVT")

koptilnya/engine/gearboxes/manual.txt

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+-- @include ./base.txt
+require("./base.txt")
+
+ManualGearbox = class("ManualGearbox")
+
+function ManualGearbox:initialize(options)
+  -- create base gearbox inside
+end
+
+-- proxy the methods here