miner.lua

local tArgs = { ... }
local length = tonumber(tArgs[1])
local width = tonumber(tArgs[2])
local height = tonumber(tArgs[3])
local turnRight = true
local slot = 1

--Helper Functions
function nextSlot()
    if slot < 16 then
        slot = slot + 1
    else
        slot = 1
    end
    turtle.select(slot)
end

function place()
    block = turtle.inspectDown()
    if block then
        if not turtle.compareDown() then
            turtle.digDown()
            turtle.placeDown()
        end
    end
end



-- Main Function --

function main()

    if width == nil then
        print("1. Place turtle (with pickaxe) facing direction of said mining (cube) area on left side and above the first layer you want to mine.")
        print("2. Load turtle with enough fuel for mining.")
        print("3. Type 'platform <length> <width> <height>'")
        return 0
    end

    turtle.select(slot)
    turtle.refuel();

    turtle.dig()
    turtle.forward()

    -- For Every 3 Levels of Height
    for k = 0, height, 3 do
        -- For Every block of width
        for j = 1, width, 1 do

            -- For every block of length
            for i = 1, length, 1 do
                if turtle.getItemCount(slot) == 0 then
                    nextSlot()
                else
                    turtle.refuel()
                end

                turtle.digUp()
                turtle.digDown()

                if i < length then
                    turtle.dig()
                    turtle.forward()
                end
            end

            if j < width then

                if turnRight == true then
                    turtle.turnRight()
                    turtle.dig()
                    turtle.forward()
                    turtle.turnRight()
                    turnRight = false
                else
                    turtle.turnLeft()
                    turtle.dig()
                    turtle.forward()
                    turtle.turnLeft()
                    turnRight = true
                end
            end
        end

        if k < height then
            turtle.digUp()
            turtle.up()
            turtle.digUp()
            turtle.up()
            turtle.digUp()
            turtle.up()
            turtle.turnRight()
            turtle.turnRight()

            -- due to orientation magic, we don't need to 'not' our turnRight variable
        end
    end
end

main()