computercraft/mine

os.loadAPI("tmnt")

function tunnel(count)
    for i=1,count do
        tmnt.forceForward()
        tmnt.tryDigUp()
    end
end

function linkPrevious()
    tunnel(2)
    tmnt.turn180()
    turtle.forward()
    turtle.forward()
    turtle.forward()
    tunnel(3)
end

function mine()
    turtle.turnLeft()
    tunnel(9)

    turtle.turnLeft()
    linkPrevious()

    turtle.turnRight()
    tunnel(9)

    turtle.turnRight()
    linkPrevious()
end

local repetition = 1

local argv = { ... }
if #argv == 1 then
    repetition = tonumber(argv[1])
elseif #argv > 1 then
    error("Usage: mine [length=1]")
end

tmnt.checkFuel()

for i = 1, repetition do
    mine()
end