Gourmaryllis Automation

local var = require "varutils"
local save, load = var.save, var.load

delay_top = 3
delay_bottom = 16

function search(a, b)
    for i = a, b do
        turtle.select(i)
        if turtle.getItemCount() > 0 then
            return true
        end
    end
    return false
end

lastDropped = load("lastDropped")
while true do
    if lastDropped == "bottom" then
        if not search(1, 8) then break end
        turtle.dropDown(1)
        save("lastDropped", "top")
        sleep(delay_top)
    else
        if not search(9, 16) then break end
        turtle.dropDown(1)
        save("lastDropped", "bottom")
        sleep(delay_bottom)
    end
end