nicoFix2

function refuel()
cf = turtle.getFuelLevel()
mf = turtle.getFuelLimit()
fp = math.floor(cf/mf)*100
if fp <= 50 then
repeat
turtle.select(2)
turtle.refuel()
until fp >=70
end end

function TR()
turtle.turnRight()
turtle.forward()
turtle.turnRight()
end

function TL()
turtle.turnLeft()
turtle.forward()
turtle.turnLeft()
end

function keep()
turtle.select(1)
while turtle.detectDown() do
for i = 3, 16 do
turtle.select(i)
turtle.dropDown()
end end end

function farm()
    local index = 0
    local index2 = 0

    while true do
        refuel()
        index = 0
        while (index < 5)
        do
            turtle.forward()
            index = index + 1
        end

        if (index2 % 2 == 0)
        then
            TL()
        else
            TR()
        end
        index2 = index2 + 1
    end
end

farm()