stripMine.lua

args = {...}
stripAmount = args[1]

stripLength = 5
stripsPerChest = 3

function strip()
    for i = 1, stripLength do
        t.dig()
        t.forward()
        t.digDown()
    end

    t.turnAround()

    for i = 1, stripLength do
        t.forward()
    end
end

function stripPair()
    t.left()
    strip()
    strip()
    t.right()
    t.placeDown(1)
end

function placeChest()
    t.placeDown(2)
    for i = 3, 16 do
        turtle.select(i)
        turtle.dropDown()
    end
end

function run()
    stripsSinceChest = 0
    for i = 1, stripAmount do
        for x = 1, 2 do
            t.dig()
            t.forward()
            t.digDown()
        end

        stripPair()
        stripsSinceChest = stripsSinceChest + 1

        t.dig()
        t.forward()
        t.digDown()

        if stripsSinceChest == 3 or i == stripAmount then
            stripsSinceChest = 0
            placeChest()
        end
    end
end

run()