Fancy Tower v1.5

--CurrentLuaProgram.lua
print("Hello World")
--TurtleTower

--Check arguments for correct formatting
local args = { ... }
if #args ~= 1 then      --Check if it's not exactly 3 arguments.
    shell.run("clear")
    print("Invalid number of arguments")
    print("turtletower [height]")
    do return end
end
for i = 1, 1 do            --Step through each argument and make sure it is a number greater than 1.
    if tonumber(args[i]) < 5 or tonumber(args[i]) > 9 then
        shell.run("clear")
        print("Invalid arguments")
        print("All measurements must be numbers greater than 5 and less than 9")
        do return end
    end
end
--------------------------------------------------

--commandline arguments [height]
length = tonumber(args[1])  --length of square

--The position of each of the blocks of interest
-- these blocks are used for different parts of the tower.
wallslot = 1
floorslot = 4
roofslot = 5
torchslot = 6
ladderslot = 7
glassslot = 8
roofslot = 9

function checkSlots()
    if turtle.getItemCount(wallslot) < 1 then
        slotnum = wallslot + 1
        turtle.select(wallslot)
    end
    return
end
--------------------------------------------------

--Finish location (at H)
-- [ ][w][w][w][ ]
-- [w][ ][ ][ ][w]
-- [d][ ][ ][ ][w]
-- [H][ ][ ][ ][w]
-- [ ][w][w][w][ ]
-- This is where the bot should be after each function
-- (top down view) facing up



-- Create the walls of the tower.
function walls (height)
    for i = 1, height do
        if not turtle.detectUp() then
            turtle.up()
        end
        for j = 1, 4 do
            for k = 1, 3 do
                if not turtle.detectDown() then
                    checkSlots()
                    turtle.placeDown()
                end
                turtle.forward()
            end
            turtle.turnRight()
            turtle.forward()
        end
    end
end

-- Door and windows.
function openings(height)
    --get back to floor level
    turtle.forward()
    turtle.turnLeft()
    turtle.back()
    for i = 1, length do
        turtle.down()
    end

    currentHeight = 1

    turtle.dig()
    turtle.up()
    turtle.dig()
    currentHeight = currentHeight + 1

    while currentHeight < height - 3 do
        for i = 1, 4 do
            if i == 4 and currentHeight == 2 then
            print("Door Created")
            else
            turtle.back()
            turtle.turnRight()
            turtle.forward()
            turtle.dig()
            turtle.up()
            turtle.dig()
            turtle.down()
            end
        end
        turtle.up()
        turtle.up()
        turtle.up()
        turtle.up()
        currentHeight = currentHeight + 4
    end
end

walls(length)
openings(length)

-- turtle.turnRight()
-- turtle.turnRight()
-- turtle.dig()
-- turtle.up()
-- turtle.dig()
-- turtle.down()
-- turtle.turnRight()
-- turtle.forward()
-- turtle.turnRight()
-- for i = 1, length do
    -- turtle.forward()
    -- if turtle.getItemCount(slotnum) < 1 then
        -- slotnum = slotnum + 1
        -- turtle.select(slotnum)
    -- end
    -- turtle.placeDown()
    -- turtle.up()
    -- turtle.forward()
    -- if turtle.getItemCount(slotnum) < 1 then
        -- slotnum = slotnum + 1
        -- turtle.select(slotnum)
    -- end
    -- turtle.placeDown()
    -- turtle.turnRight()
-- end