function usepotion_message(u, potion)
  msg = message.create("usepotion")
  msg:set_unit("unit", u)
  msg:set_resource("potion", potion)
  return msg
end

function use_stardust(u, amount)
  local p = u.region:get_resource("peasant")
  p = math.ceil(1.5 * p)
  u.region:set_resource("peasant", p)
  local msg = usepotion_message(u, "stardust")
  msg:send_region(u.region)
  u:use_pooled("stardust", amount)
  return 0
end

local self = {}

function self.update()
    if not get_key("xm05") then
        print("Es weihnachtet sehr (2005)")
        set_key("xm05", true)
        for f in factions() do
            f:add_item("stardust", 1)
            f:add_notice("santa2005")
        end
    end
end

return self