帮会香火：每日上香的香火累积

local function incense(actor, guild)
    local today = os.date("%Y%m%d")
    if getplayvar(actor, "incenseDay") == today then
        sendmsg(actor, 1, "今日已上香")
        return
    end
    setplayvar(actor, "incenseDay", today)
    setplayvar(actor, "incense",
        (getplayvar(actor, "incense") or 0) + 1)
    setsysvarex("incenseAll_" .. guild,
        (getsysvar("incenseAll_" .. guild) or 0) + 1)
    sendmsg(actor, 1, "香火 +1，总香火 "
        .. getsysvar("incenseAll_" .. guild))
end

local function shopTier(guild)
    local total = getsysvar("incenseAll_" .. guild) or 0
    return math.min(math.floor(total / 500), 3)
end