Room

local tArgs = {...}
local length = tonumber(tArgs[1]) or 0
local width = tonumber(tArgs[2]) or 0
local height = tonumber(tArgs[3]) or 0
local slot = 0

local qu_x = 1
local qu_y = 0
local qu_z = 1
local facing = 2

--[[
13 - pavement
14 - walls
15 - roof
]]--



function move (dir)
    if dir == "up" then
        if turtle.up() then
            qu_y = qu_y + 1
            return true
        else
            return false
        end
    elseif dir == "down" then
        if turtle.down() then
            qu_y = qu_y - 1
            return true
        else
            return false
        end
    elseif dir == "north" or dir == "south" or dir == "west" or dir == "east" then
        turnTo(dir)
        local moved = turtle.forward()
        if moved then
            if dir == "north" then qu_z = qu_z + 1 elseif dir == "south" then qu_z = qu_z - 1 elseif dir == "west" then qu_x = qu_x - 1 elseif dir == "east" then qu_x = qu_x + 1 end
        return true
        else
            return false
        end
    end
    return false
end

function turn(direction)
    if direction == "left" or direction == "right" then
        local d = 0
        if direction == "left" then d = 1; turtle.turnLeft() else d = -1; turtle.turnRight() end
        facing = facing + d
        if (facing == -1) then facing = 3 elseif (facing == 4) then facing = 0 end
        return true
    end
    return false
end

-- Function turns to the specified facing location.
function turnToN (face)
    if face == facing then return true end
    local lOrR = (facing - face + 4) % 4
    if lOrR > 2 then
        turn("left")
    elseif lOrR < 2 then
        turn("right")
    else
        turn("left")
        turn("left")
    end
    return true
end
function turnTo (nesw)
    if nesw == "north" then
        turnToN(0)
    elseif nesw == "south" then
        turnToN(2)
    elseif nesw == "west" then
        turnToN(1)
    elseif nesw == "east" then
        turnToN(3)
    end
end

function start()
    turtle.select(1)
    buildRoof()
    print("x"..qu_x)
    print("z"..qu_z)
end

function spinAndPlace(dir,s)
    turtle.turnRight()
    turtle.turnRight()
    place(dir,s)
end

function buildRoof()
    turnTo("north")
    for x = 1, width, 1 do
        for z = 1, length - 1, 1 do
            if ( x % 2 == 1 ) then
                move("south")
            else
                move("north")
            end
            spinAndPlace("front",15)
        end

        move("west")
        spinAndPlace("front",15)

    end
end

function place(dir, s)
    turtle.select(s)
    if turtle.getItemCount(s) > 1 or s == 16 then
        if dir == "up" then
            turtle.placeUp()
        elseif dir == "down" then
            turtle.placeDown()
        else
            turtle.place()
        end
    else
        local didTransfer = false
        for i=1,12,1 do
            if  i ~= s and turtle.compareTo(i)then
                turtle.select(i)
                didTransfer = didTransfer or turtle.transferTo(s)
                turtle.select(s)
            end
        end

        if didTransfer then
            turtle.select(s)
            place(dir,s)
        else
            restock()
            place(dir,s)
        end
    end
end

function suck(dir)
    if dir == "up" then
        turtle.suckUp()
    elseif dir == "down" then
        turtle.suckDown()
    else
        turtle.suck()
    end
end

function dig(dir)
    if dir == "up" then
        turtle.digUp()
    elseif dir == "down" then
        turtle.digDown()
    else
        turtle.dig()
    end
end

function restock()
    turtle.select(16)
    local dir = ""
    if not turtle.detectUp() then
        dir = "up"
    elseif not turtle.detect() then
        dir = "front"
    else
        dir = "down"
        turtle.digDown()
        turtle.placeDown()
    end
    dig(dir)
    place(dir,16)
    turtle.select(1)
    for i=1,3 do
        suck(dir)
    end

    turtle.select(16)
    turtle.drop()
    dig(dir)
end

start()