alvBuilder

local alvearySlots = {1,3}
local slabSlots = {2}
local types = {alveary = alvearySlots, slabs = slabSlots}
local layerTypes = { "alveary", "alveary", "alveary", "slabs" }
local turnAltB = false

local function selectSlot(type)
    local slotsForType = types[type]
    for _,v in pairs(slotsForType) do
        if turtle.getItemCount(v) > 0 then
            turtle.select(v)
            return v
        end
    end
    return nil
end

local function placeDown(type)
    selectSlot(type)
    while not turtle.placeDown() do sleep(1) end
end
local function placeUp(type)
    selectSlot(type)
    while not turtle.placeUp() do sleep(1) end
end
local function place(type)
    selectSlot(type)
    while not turtle.place() do sleep(1) end
end

local function goForward()
    while not turtle.forward() do sleep(1) end
end

local function goBack()
    while not turtle.back() do sleep(1) end
end

local function goUp()
    while not turtle.up() do sleep(1) end
end

local function goDown()
    while not turtle.down() do sleep(1) end
end

local function buildSlabRow(type,length)
    for i=1,length,1 do
        placeDown(type)
        if i ~= length then goForward() end
    end
end

local function turnAlt(toggle)
    if not turnAltB then turtle.turnRight()
    else turtle.turnLeft() end
    if toggle then turnAltB = not turnAltB end
end

local function buildAlvRow(type,length)
    local slot = selectSlot(type)
    for i=1,length,1 do
        placeUp(type)
        placeDown(type)
        if i == length then
            turnAlt()
        end
        goBack()
        place(type)
    end
end


--[[
local function buildAlveary()
    turnAltB = false
    for layer=1,4,1 do
        goUp()
        for rows=1,3,1 do
            buildRow(layerTypes[layer],3)
            if rows ~= 3 then
                turnAlt()
                goForward()
                turnAlt(true)
            end
        end
        if layer ~= 4 then
            turnAlt()
            turnAlt()
        end
    end
end]]

local function buildAlveary()
    goUp()
    turnAltB = false
    turtle.turnRight()
    turtle.turnRight()
    for i=1,3,1 do
        buildAlvRow("alveary",3)
        turnAlt(true)
    end
    for i=1,3,1 do goUp() end
    turnAltB = false
    turtle.turnLeft()
    goForward()
    turtle.turnLeft()
    for i=1,3,1 do
        buildSlabRow("slabs",3)
        if i ~= 3 then
            turnAlt()
            goForward()
            turnAlt(true)
        end
    end
end

local function buildAlvearies()
    for p=1,2,1 do
        buildAlveary()
        turtle.turnLeft()
        turtle.turnLeft()
        for i=1,6,1 do goForward() end
        for i=1,4,1 do goDown() end
        buildAlveary()
        if p ~=2 then
            turtle.turnLeft()
            for i=1,6,1 do goForward() end
            turtle.turnRight()
            for i=1,6,1 do goForward() end
            turtle.turnRight()
            turtle.turnRight()
            for i=1,4,1 do goDown() end
        end
    end
end

buildAlvearies()