Holz

run = true
letzteEbene = false
function checkForward()
    if turtle.detect() then
        turtle.dig()
    end
    turtle.forward()
end
function checkDown()
    if turtle.detect() then
        turtle.digDown()
    end
    turtle.down()
end
function checkUp()
    if turtle.detectUp() then
        turtle.digUp()
    end
    turtle.up()
end
function goHome()
    while turtle.detectDown() == false do
            checkDown()
    end
end
function ebene()
    turtle.dig()
    checkForward()
    turtle.dig()
    checkForward()
    turtle.turnRight()
    turtle.dig()
    checkForward()
    turtle.turnRight()
    turtle.dig()
    checkForward()
    turtle.dig()
    checkForward()
    turtle.turnLeft()
    turtle.dig()
    checkForward()
    turtle.turnLeft()
    turtle.dig()
    checkForward()
    turtle.dig()
    checkForward()
    turtle.turnLeft()
    checkForward()
    checkForward()
    turtle.turnLeft()
    checkForward()
    checkForward()
    turtle.turnLeft()
    turtle.turnLeft()
end
while run do
    if turtle.detectUp() == false then
        if letzteEbene then

        end
        letzteEbene = true
        print("ENDE")
        run = false
    end
    ebene()
    if run then
    checkUp()
    end
end
goHome()