Room (basic)

local args = {...}
local length, width, stop
if (args[1] == nil) then
    print("Please give a size as the first argument.")
    length = 0
    width = 0
else
    length = tonumber(args[1])
    if (args[2] ~= nil) then
        width = tonumber(args[2])
    else
        width = length
    end
end

local function forward()
    turtle.digUp()
    turtle.digDown()
    while (not turtle.forward()) do
        if (turtle.detect()) then
            turtle.dig()
        else
            turtle.attack()
        end
    end
end

local function turn(turnFunc)
    turnFunc()
    forward()
    turnFunc()
end

for i=1, width do
    for j=2, length do
        forward()
    end
    if (i < width) then
        if (i%2 == 1) then
            turn(turtle.turnRight)
        else
            turn(turtle.turnLeft)
        end
    end
end
turtle.digUp()
turtle.digDown()