【网络通信】寄售降价提醒：收藏订阅与到价推送的链路设计

local WATCH_MAX = 20
local watches = {}
function addWatch(actor, itemId, targetPrice)
    local player = class(actor)
    local name = player:GetName()
    watches[name] = watches[name] or {}
    if #watches[name] >= WATCH_MAX then
        sendmsg(actor, 0, "订阅已满20个，请先取消部分关注")
        return
    end
    table.insert(watches[name], { id = itemId, price = targetPrice })
    sendmsg(actor, 0, "已订阅，跌破" .. targetPrice .. "金币将推送提醒")
end

setontimerex(100, 300)
function ontimer100()
    for name, subs in pairs(watches) do
        for _, w in ipairs(subs) do
            local nowPrice = getMarketPrice(w.id)
            if nowPrice ~= nil and nowPrice <= w.price * 0.95 and not w.muted then
                local a = getplayerbyname(name)
                if a ~= nil and isplayer(a) then
                    sendluamsg(a, 8601, nowPrice, 0, 0, w.id)
                    w.muted = true
                    SL_UNTIL = os.time() + 3600
                end
            end
        end
    end
end