function makeTop()
    term.setBackgroundColor(colors.white)
    term.setCursorPos(1, 1)
    term.clearLine()
    term.setCursorPos(1, 1)
    term.setTextColor(colors.red)
    write("Turtledurtle 3")
end

function fillScreen(color)
    term.setCursorPos(1, 1)
    term.setBackgroundColor(color)
    term.clear()
    makeTop()
end

sizeX, sizeY = term.getSize()

n = 0

state = 0 -- 0 = empty, 1 = alert

if (not rednet.isOpen("back")) then
    rednet.open("back")
end

fillScreen(colors.lightBlue)
term.setCursorPos(1, 1)
while true do
    local id, message = rednet.receive(3)
    if (message == nil) then
        message = " "
    end

    local continue = true

    if (message == " ") then
        if (state ~= 0) then
            state = 0
            fillScreen(colors.lime)
        end
        continue = false
    else
        if (state ~= 1) then
            state = 1
            fillScreen(colors.yellow)
            term.setCursorPos(1, 3)
        end
    end

    if (continue) then
        --n = n + 1
        --term.setCursorPos(1, cY + 1)

        term.setBackgroundColor(colors.yellow)
        term.setTextColor(colors.gray)
        print(message)
        term.scroll(1)
        local cX, cY = term.getCursorPos()
        makeTop()
        term.setCursorPos(1, cY)
        --[[if cY >= sizeY  then
            cY = cY - 1
            --n = 15
            --term.scroll(1)
            makeTop()
            term.setCursorPos(1, cY)
        end--]]
    end
end