【后端接口】积分翻倍卡：活动期间积分翻倍接口

-- 积分翻倍卡：激活与顺延
local player = class(actor)
local BOOST_SEC = 3600
local function activateBoost(player)
    local cnt = tonumber(getplayvar(player, "HUMAN", "BoostCards") or 0)
    if cnt <= 0 then
        sendmsg(player, 1, 0, "没有可用的积分翻倍卡。")
        return
    end
    local expire = tonumber(getplayvar(player, "HUMAN", "BoostExpire") or 0)
    local base = expire > os.time() and expire or os.time()
    setplayvar(player, "HUMAN", "BoostExpire", base + BOOST_SEC, true)
    setplayvar(player, "HUMAN", "BoostCards", cnt - 1, true)
    sendmsg(player, 1, 0, "积分翻倍已激活，持续至 " ..
        os.date("%H:%M", base + BOOST_SEC) .. "。")
end

-- 积分翻倍：统一结算
local player = class(actor)
local function addScoreWithBoost(player, basePts, isCurrency)
    local boost = tonumber(getplayvar(player, "HUMAN", "BoostExpire") or 0) > os.time()
    local final = basePts
    if boost and not isCurrency then
        final = basePts * 2
    end
    setplayvar(player, "HUMAN", "ActScore",
        tonumber(getplayvar(player, "HUMAN", "ActScore") or 0) + final, true)
    sendmsg(player, 1, 0, "积分 +" .. final .. (boost and "（翻倍）" or ""))
end