【引擎触发】在线奖励：挂机时长奖励的领取与防挂机判定

local ONLINE_REWARDS = { { 30, "小金丹" }, { 60, "中金丹" }, { 120, "大金丹" } }
function QF.OnlineTick(plr)
    if not plr:IsActive() then return end
    plr.onlineMin = (plr.onlineMin or 0) + 1
    for _, r in ipairs(ONLINE_REWARDS) do
        local key = "online_" .. r[1]
        if plr.onlineMin >= r[1] and not plr:HasFlag(key) then
            QF_PushRewardIcon(plr, r[2])
        end
    end
end

function QF.ClaimOnline(plr, minutes)
    if plr.onlineMin < minutes then return false, "在线时长不足" end
    local key = "online_" .. minutes
    if plr:HasFlag(key) then return false, "已领取" end
    plr:SetFlag(key)
    local reward = ONLINE_REWARDS[minutes]
    plr:AddItemByName(reward[2], 1)
    return true
end

function ActivityMonitor.isActive(plr)
    local recent = plr.actionLog
    local window = os.time() - 300
    local actions = 0
    for _, act in ipairs(recent) do
        if act.at > window then actions = actions + 1 end
    end
    return actions >= 5
end