lamp robot

local selectedSlot = 1
local maxCountSlots = 16
local checkIterations = 0
local exitFlag = false

-- main cicle
while (true) do
    -- check blocks in inventory
    checkIterations = 0
    while (true) do
        checkIterations = checkIterations + 1
        if (turtle.getItemDetail(selectedSlot) ~= nil) then
            break
        end

        selectedSlot = selectedSlot + 1
        if (selectedSlot >= maxCountSlots) then
            selectedSlot = 1
        end

        if (checkIterations >= maxCountSlots) then
            exitFlag = true
        end
    end

    if (exitFlag) then
        print("NO BLOCKS :(")
        break
    end

    -- place block
    turtle.select(selectedSlot)
    turtle.placeUp()

    -- move
    for i = 1, 4 do
        if (not turtle.forward()) then
            print("NO FUEL OR WALL")
            break
        end
    end

end