【后端接口】新人保护榜毕业：榜单资格规则与奖励结算接口

function checkGraduate(actor, rank)
    local player = class(actor)
    local regDays = tonumber(getplayvar(actor, 2, "REG_DAYS") or "0")
    if regDays > 30 then
        sendmsg(actor, 0, "已超过新人保护期30天，不再参与该榜")
        return false
    end
    if rank <= 100 then
        setplayvar(actor, "HUMAN", "ROOKIE_GRAD", 1, 1)
        sendmail(actor, 0, "新人榜毕业奖励", "排名第" .. rank .. "顺利毕业", "毕业称号卷轴|1;小毛驴坐骑|1")
        return true
    end
    return false
end

local function refillRanks(graduated)
    for i = 1, graduated do
        local nxt = 100 + i
        sendmail(lookupRankName(nxt), 0, "新人榜递补通知", "已进入保护榜前100", "")
    end
end