print("By default this CnS bot will mine a distance of 128 blocks")
print("Press any button to change this value")

local x, y = term.getCursorPos()
local s = 5
local distance

local myTimer = os.startTimer(0)

while s >= 0 do
        local event, param = os.pullEvent()

        if event == "timer" and param == myTimer then
            term.setTextColor(8)
            term.write(s)
            s = s - 1
            term.setCursorPos(x, y)
            myTimer = os.startTimer(1)
        elseif event == "key" then
            term.clear()
            term.setCursorPos(1,1)
            term.setTextColor(1)
            term.write("Enter the distance you'd like this CnS bot to dig.")

            while true do
                    distance = tonumber(read())
                    if distance then
                            break
                    end
                    print("Please enter an actual number.")
            end

            break
        end
end

--turtle.getFuelLevel(