【进阶实战】NPC谜语人：每日谜语的答案核验封装

local RIDDLES = {
    { q = "身穿铁甲走四方，日落西边把家还（打一怪物）", a = "沃玛战士" },
    { q = "千里一眼辨真伪，运筹帷幄定乾坤（打一职业）", a = "道士" }
}

local function answerRiddle(actor, text)
    local day = math.floor(os.time() / 86400)
    local r = RIDDLES[day % #RIDDLES + 1]
    local key = "Riddle_" .. day
    if (tonumber(getplayvar(actor, 1, key)) or 0) == 1 then
        sendmsg(actor, 1, "今日已作答，明日再来。")
        return
    end
    setplayvar(actor, 1, key, 1, 1)
    local norm = string.lower(string.gsub(text, "%s", ""))
    if norm == string.lower(r.a) then
        giveitem(actor, "祝福油", 1, 0, "谜语答对")
        sendmsg(actor, 1, "答对！祝福油一瓶奉上。")
    else
        sendmsg(actor, 1, "不对哦，明日再来。")
    end
end