XbyX

local arg = {...}
if arg == nil then
        print("Usage: 6x6 <forward> <right> <down>")
        return 2
end

z = tonumber (arg[1])
x = tonumber (arg[2])
y = tonumber (arg[3])



function checkInv()
    for i=1,16 do
        if turtle.getItemCount(i) == 0 then
            print("Slot number "..i.." is empty, returning")
            return
        end
    end
    turtle.select(16)
    turtle.placeUp()
    for q=1,15 do
        turtle.select(q)
        turtle.dropUp()
    end
    turtle.select(1)

end

function dig(x)
    for i=1,x do
    turtle.digDown()
    turtle.forward()
    turtle.digDown()
    checkInv()
    end
end

for i=1,y do
    print("Starting level: "..i)
    for o=1,x do
        print("Starting row: "..o)
        if o == x then
            dig(z-1)
        elseif o%2 == 0 then
            dig(z-1)
            turtle.turnLeft()
            dig(1)
            turtle.turnLeft()
        else
            dig(z-1)
            turtle.turnRight()
            dig(1)
            turtle.turnRight()
        end
    end
    if i==y then
        print("Finished")
    elseif x%2 == 1  then
        turtle.turnRight()
        turtle.turnRight()
        turtle.down()
    elseif x%2 == 0 then
        turtle.turnRight()
        turtle.turnRight()
        turtle.down()
        dig(z-1)
        turtle.turnRight()
        turtle.turnRight()
    end

end