Strip

local laenge = 8
local error = false
local leeehr = false

function leehr()

    turtle.turnLeft()
    turtle.turnLeft()

    if turtle.detect() then
        turtle.dig()
    end

    turtle.select(1)

    if turtle.place() then

        for i = 4, 16, 1 do
            turtle.select(i)
            turtle.drop()
        end

    else
        error = true
    end

    turtle.select(1)
    turtle.dig()
    turtle.turnLeft()
    turtle.turnLeft()

end

function entleehr()

    if turtle.getItemCount(14) > 0 then
        leehr()
    end

end

function nachVorne()

    for i = 1, 3, 1 do
        if turtle.detect() then
            turtle.dig()
            entleehr()
        end
        turtle.forward()

        if turtle.detectUp() then
            turtle.digUp()
            entleehr()
        end
    end

end

function gang()

    for i = 1, laenge, 1 do
        if turtle.detect() then
            turtle.dig()
            entleehr()
        end
        turtle.forward()

        if turtle.detectUp() then
            turtle.digUp()
            entleehr()
        end
    end

    turtle.select(3)
    turtle.placeUp()
    turtle.select(1)

    turtle.turnLeft()
    turtle.turnLeft()

    for i = 1, laenge, 1 do
        if turtle.detect() then
            turtle.dig()
            entleehr()
        end
        turtle.forward()
    end

end

print("Wie viele Wege?")

local anz = io.read("*l")

if turtle.getFuelLevel() == 0 then

    local anzKohle = turtle.getItemCount(2)

    if anzKohle < 2 then

        leeehr = true

    else

        turtle.select(2)
        turtle.refuel(anzKohle - 1)
        turtle.select(1)

    end

end

if leeehr == false then

    for i = 1, anz, 1 do

        nachVorne()
        turtle.turnLeft()
        gang()
        gang()
        turtle.turnRight()

    end

    turtle.turnLeft()
    turtle.turnLeft()

    for i = 1, (anz * 3) + 1, 1 do

        if turtle.detect() then
            turtle.dig()
            entleehr()
        end
        turtle.forward()

    end

else

    print("ERROR: not genug fuel")

end