local M = {}

local shift_knob_status = 0
local shift_knob_currentGear = 0

local function init()
	shift_knob_status = 1
	electrics.values.shift_knob = 0
	shift_knob_currentGear = 3
end

local function updateGFX(dt)
	if ((shift_knob_currentGear < electrics.values.gearModeIndex) and shift_knob_status == 1) then
		shift_knob_currentGear = electrics.values.gearModeIndex
		shift_knob_status = 2
		electrics.values.shift_knob = 0
	elseif ((shift_knob_currentGear > electrics.values.gearModeIndex) and shift_knob_status == 1) then
		shift_knob_currentGear = electrics.values.gearModeIndex
		shift_knob_status = 0
		electrics.values.shift_knob = 0
	else
		shift_knob_currentGear = electrics.values.gearModeIndex
	end
	if shift_knob_status == 2 then
		if electrics.values.shift_knob > 1 then
			shift_knob_status = 1.5
		else
			electrics.values.shift_knob = electrics.values.shift_knob + 0.1
		end
	end
	if shift_knob_status == 1.5 then
		if electrics.values.shift_knob <= 0.1 then
			shift_knob_status = 1
			electrics.values.shift_knob = 0
		else
			electrics.values.shift_knob = electrics.values.shift_knob - 0.1
		end
	end
	if shift_knob_status == 0 then
		if electrics.values.shift_knob < -1 then
			shift_knob_status = 0.5
		else
			electrics.values.shift_knob = electrics.values.shift_knob - 0.1
		end
	end
	if shift_knob_status == 0.5 then
		if electrics.values.shift_knob >= -0.1 then
			shift_knob_status = 1
			electrics.values.shift_knob = 0
		else
			electrics.values.shift_knob = electrics.values.shift_knob + 0.1
		end
	end
end

M.init    = init
M.updateGFX = updateGFX

return M