startup.lua

m = peripheral.wrap("back")

rednet.open("top")

data = {}

function fetchData()
    while true do
        e, id, d,c = os.pullEvent("rednet_message")
        if id == 0 then
            data = textutils.unserialize(d)
        end
    end
end

function displayData()
    os.sleep(5)
    while true do
        m.clear()
        m.setBackgroundColor(colors.black)
        m.setCursorPos(1, 1)
        if data["active"] then
            m.write("Reactor Active: Yes")
        else
            m.write("Reactor Active: No")
        end
        m.setCursorPos(1, 2)
        m.write("Network Energy: " .. data["energy"] .. "%")

        drawLine(m, 5, 10, colors.green)
        os.sleep(1)
    end
end

parallel.waitForAll(fetchData, displayData)

function drawLine(m,x, y, lenght, color)
    bgColor = m.getBackgroundColor()
    for i = x, (lenght + x) do
        m.setCursorPos(i,y)
        m.setBackgroundColor(color)
        m.write(" ")
    end
    m.setBackgroundColor(bgColor)
end