Minecraft BigReactors Actively Cooled ComputerCraft Script

local reactor = peripheral.wrap("bottom")
local turbine = peripheral.wrap("BigReactors-Turbine_0")

turn = 0
seq = false
lastDiff = 0

while true do
  rsLvl = rs.getAnalogInput("right")
  if seq then print(rsLvl .. '.')
  else print(rsLvl) end
  seq = not seq

  active = reactor.getActive()
  if rsLvl < 3 and not active then
    reactor.setAllControlRodLevels(100)
    reactor.setActive(true)
  elseif rsLvl > 12 and active then
    reactor.setActive(false)
  end

  if active then
    diff = turbine.getRotorSpeed() - 1800
    if diff < -100 then
      steam = reactor.getHotFluidProducedLastTick()
      if steam < 780 then
        crLvl = reactor.getControlRodLevel(turn)
        reactor.setControlRodLevel(turn, crLvl - 1)
        turn = turn + 1
        turn = turn % 8
      elseif steam > 800 then
        turn = turn - 1
        turn = turn % 8
        crLvl = reactor.getControlRodLevel(turn)
        reactor.setControlRodLevel(turn, crLvl + 1)
      end
    elseif diff < 0 then
      if diff <= lastDiff then
        crLvl = reactor.getControlRodLevel(turn)
        reactor.setControlRodLevel(turn, crLvl - 1)
        turn = turn + 1
        turn = turn % 8
      elseif diff > lastDiff + 2 then
        turn = turn - 1
        turn = turn % 8
        crLvl = reactor.getControlRodLevel(turn)
        reactor.setControlRodLevel(turn, crLvl + 1)
      end
    elseif diff > 0 then
      if diff >= lastDiff then
        turn = turn - 1
        turn = turn % 8
        crLvl = reactor.getControlRodLevel(turn)
        reactor.setControlRodLevel(turn, crLvl + 1)
      end
    end

    lastDiff = diff
  end

  sleep(1)
end