【入门夯实】Buff双份：同一事件重复注册的去重守护

local function onLoginDup(actor)
    actor = getplayerbyname(actor)
    addbuff(actor, 15, 3600, 1)
    setontimer(actor, 41, 60, 0)
    sendmsg(actor, 1, "欢迎回到玛法大陆！")
end

local function onLoginSafe(actor)
    actor = getplayerbyname(actor)
    if hastimer(actor, 41) then
        return
    end
    addbuff(actor, 15, 3600, 1)
    setontimer(actor, 41, 60, 0)
    sendmsg(actor, 1, "欢迎回到玛法大陆，守卫 Buff 已挂载。")
end

local function joinChannel(actor, channel)
    actor = getplayerbyname(actor)
    local joined = getplayvar(actor, "HUMAN", "Chan_" .. channel)
    if joined ~= "" and joined ~= nil then
        return
    end
    setplayvar(actor, "HUMAN", "Chan_" .. channel, 1, 1)
    sendmsg(actor, 1, "已加入频道：" .. channel)
end