tunnel

local TRACKING_SERVER_ID = nil

function forward()
    while not turtle.forward() do
        turtle.dig()
        os.sleep(0.2)
    end
    turtle.digUp()
    if not turtle.detectDown() then
        turtle.select(1)
        turtle.placeDown()
    end
end

function tunnel()
    forward()
    turtle.digUp()

    turtle.turnLeft()
    while turtle.detect() do
        turtle.dig()
        os.sleep(0.5)
    end
    turtle.up()
    turtle.dig()

    turtle.turnRight()
    turtle.turnRight()
    while turtle.detect() do
        turtle.dig()
        os.sleep(0.5)
    end
    turtle.down()
    turtle.dig()
    turtle.turnLeft()
end

local trackingEnabled = fs.exists("tracking") and os.loadAPI("tracking")
print("1.Slot Cobblestone\n\n")
write("Laenge: ")
w = io.read()

if trackingEnabled then
    tracking.setStatus("tunnel", 0, w, TRACKING_SERVER_ID)
end
for i = 1, w do
    tunnel()
    if trackingEnabled then
        tracking.setStatus("tunnel", i, w, TRACKING_SERVER_ID)
    end
end