MC Reactor Monitor

local reactor = peripheral.wrap('back')
local monitor = peripheral.wrap('top')
local modem = peripheral.wrap('right')

while true do
    monitor.clear()
    monitor.setCursorPos(1,1)
    monitor.write('Reactor Energy')
    reactorEnergy = reactor.getEnergyStored()
    reactorEnergyPercent = math.floor(reactorEnergy/100000)
    modem.transmit(1,1,reactorEnergyPercent)
    monitor.setCursorPos(1,2)
    monitor.write(reactorEnergyPercent.."%")

    if reactorEnergyPercent < 20 then
        reactor.setActive (true)
    end
    if reactorEnergyPercent > 80 then
        reactor.setActive (false)
    end

    if reactor.getActive() then
        state = "ON"
    else
        state = "OFF"
    end

    monitor.setCursorPos(1,3)
    monitor.write("Reactor is "..state)

    sleep(1)
end