what does it mean? - ComputerCraft Forums (archive)

Posted 13 November 2014 - 11:08 AM
hello again.. im getting a error i have never encoutered before..

window:248: bad argument: double expected, got nil

the code im using is this
Spoiler

local rea = peripheral.wrap("left")
local mon = peripheral.wrap("top")
local rod = 0

local function rod()
    while true do
        term.clear()
        term.write("power control")
        term.setCursorPos(1,2)
        term.write("skal staven op eller ned")
        term.setCursorPos(1.3)
        term.write("1: op")
        term.setCursorPos(1.4)
        term.write("2: ned")
        term.setCursorPos(1.5)
        term.write(" Valg: ")
        local opned = read()
        if opned == 1 then
            term.clear()
            term.setCursorPos(1,1)
            term.write("hvor meget skal den op")
            term.setCursorPos(1,2)
            term.write("Valg :")
            local hvormegetop = read()
            rea.setAllControlRodLevels(rod + hvormegetop)
        elseif opned == 2 then
            term.clear()
            term.setCursorPos(1,1)
            term.write("hvor meget skal den ned")
            term.setCursorPos(1,2)
            term.write("Valg :")
            local hvormegetned = read()
            rea.setAllControlRodLevels(rod - hvormegetned)
        end
    end
end

local function monitor()
    mon.clear()
    while true do
        local fueltemp = rea.getFuelTemperature()
        local casetemp = rea.getCasingTemperature()
        local fuelam = math.floor(rea.getFuelAmount / 1000)
        local energy = rea.getEnergyStored()
        local prt = math.floor(rea.getEnergyProducedLastTick / 1000 )
        local rodlevel = rea.getControlRodLevel()
        mon.setCursorPos(1.2)
        mon.write("Fuel Temp: "..fueltemp)
        mon.setCursorPos(1,3)
        mon.write(" Casing Temp: "..casetemp)
        mon.setCursorPos(1,4)
        mon.write("Fuel Amount: "..fuelam)
        mon.setCursorPos(1.5)
        mon.write("energy level: "..energy)
        mon.setCursorPos(1,6)
        mon.write("Energy Production: "..prt)
        mon.setCursorPos(1,7)
        mon.write("Control rod: "..rodlevel)
        if rea.getActive() == true then
            mon.setCursorPos(1,1)
            mon.clearLine()
            mon.write("Reactor Status: ON")
        elseif rea.getActive() == false then
            mon.setCursorPos(1,1)
            mon.clearLine()
            mon.write("Reactor Status: OFF")
        end
    end
end
            
            
while true do
    parallel.waitForAny(rod,monitor)
end