【后端接口】师徒传功：每日传功与经验加成

---传功：关系校验与每日一次
function ChuanGong.start(actor, masterName)
    local player = class(actor)
    if not player then return false end
    -- 关系校验：传功对象必须是自己的师父
    if getplayvar(actor, 2, "MasterName") ~= masterName then
        sendmsg(actor, 1, "只能向自己的师父传功")
        return false
    end
    -- 每日一次：日期键幂等
    local dayKey = "CG_" .. os.date("%Y%m%d")
    if (getplayvar(actor, 2, dayKey) or "") ~= "" then
        sendmsg(actor, 1, "今日已传功，明日再来")
        return false
    end
    setplayvar(actor, "HUMAN", dayKey, os.time(), 0)
    ChuanGong.grant(actor, masterName)
    return true
end

---传功奖励：双向的经验与道具
function ChuanGong.grant(actor, masterName)
    local lv = actor:GetLevel()
    -- 徒弟经验：当前等级升级需求的 30%
    local exp = math.floor(UP_TABLE[lv] * 0.3)
    sendmsg(actor, 1, "获得 " .. exp .. " 点修为")
    -- 师父的传功礼：邮件发放
    sendmail(masterName, 8015, "徒弟的敬奉",
        actor .. " 完成了传功", "传功礼盒|1")
    -- 双方的亲密度加成
    local it = tonumber(getplayvar(actor, 2, "CG_Intimacy")) or 0
    setplayvar(actor, "HUMAN", "CG_Intimacy", it + 5, 1)
end