room

local args = {...}
xCurrent = 1
yCurrent = 1
xMax = 4
zMax = 4
facing = 0 --start 0,


function digUpDown()
    while turtle.detectUp() do
        turtle.digUp()
        sleep(1)
    end
    while turtle.detectDown() do
        turtle.digDown()
        sleep(1)
    end
end

function dig()
    digUpDown()

    while turtle.detect() do
            turtle.dig()
            sleep(1)

    end
end



function start()


    while zCurrent < zMax do
        if facing == 0 then
            if xCurrent == xMax then
                turtle.turnRight()
                dig()
                turtle.forward()
                turtle.turnRight()
                zCurrent = zCurrent +1
                facing = 1
            else
                while xCurrent < xMax do
                    dig()
                    turtle.forward()
                    xCurrent = xCurrent +1
                end
                if zCurrent == zMax then
                    turtle.turnLeft()
                    dig()
                    turtle.forward()
                    turtle.turnLeft()
                    zCurrent = zCurrent +1
                    facing = 1
                end
            end
        end

        if facing == 1 then
            while xCurrent > 1 do
                dig()
                turtle.forward()
                xCurrent = xCurrent -1
            end
            if xCurrent == 1 then
                turtle.turnLeft()
                dig()
                turtle.forward()
                turtle.turnLeft()
                zCurrent = zCurrent +1
                facing = 0
            end
        end
    end
end




--Begin
if #args == 2 then
    start()
elseif #args == 0 then
    start()
else
    print("Usage: room <x> <z>")
end