【网络通信】动态事件预告：世界事件的定时广播链路设计

local EVENTS = {}
local function registerEvent(name, startTs)
    EVENTS[#EVENTS + 1] = { name = name, ts = startTs, p30 = false, p5 = false, fired = false }
end
setontimerex(117, 60)
function ontimer117()
    local now = os.time()
    for _, e in ipairs(EVENTS) do
        if not e.p30 and e.ts - now <= 1800 and e.ts > now then
            e.p30 = true
            sendcentermsg("【预告】" .. e.name .. " 将于30分钟后开启！")
        elseif not e.p5 and e.ts - now <= 300 and e.ts > now then
            e.p5 = true
            sendcentermsg("【预告】" .. e.name .. " 即将开始，倒计时5分钟！")
        elseif not e.fired and now >= e.ts then
            e.fired = true
            sendcentermsg("【开启】" .. e.name .. " 现已开启！")
        end
    end
end

local function archiveExpired(now)
    for i = #EVENTS, 1, -1 do
        if EVENTS[i].fired and now - EVENTS[i].ts > 86400 then
            table.remove(EVENTS, i)
        end
    end
end