Mining v1.13

near=true
blocksTravelled = 0

function mine(num)
    for i=0, num, 1 do
    while turtle.detectUp() do
            turtle.digUp()
    end
    while turtle.detect() do
            turtle.dig()
    end
        turtle.forward()
    end
end

function checkInventory()
    if turtle.getItemCount(8) > 0 then
        dropOff()
    end
end

function dropOff()
    turtle.turnRight()
    turtle.turnRight()
    for i=0, (blocksTravelled - 3), 1 do
    turtle.forward()
    end
    if not near then
    turtle.turnLeft()
    for i=0, 16, 1 do
        turtle.forward()
    end
    turtle.turnRight()
    end
    sleep(10)
    turtle.turnRight()
    turtle.turnRight()
    if not near then
    turtle.turnLeft()
    for i=0, 16, 1 do
        turtle.forward()
    end
    turtle.turnRight()
    end
    for i=0, blocksTravelled - 3, 1 do
    turtle.forward()
    end
end

function segment(mirror)
    turn = function() error("Turn not being assigned") end
    reverseTurn = function() error("ReverseTurn not being assigned") end
    if mirror == true then
    turn = turtle.turnRight
    reverseTurn = turtle.turnLeft
    else
    turn = turtle.turnLeft
    reverseTurn = turtle.turnRight
    end
    turn()
    mine(16)
    near = not near
    turn()
    mine(2)
    reverseTurn()
    reverseTurn()
    mine(5)
    blocksTravelled = blocksTravelled + 3
    checkInventory()
end

for i=0, 10, 1 do
    segment(false)
    segment(true)
end