【框架设计】幸运值机制：强化失败的隐性补偿

---强化的幸运值：失败累加，成功清零
function Upgrade.onFail(actor, targetLv)
    local player = class(actor)
    if not player then return end
    local luck = tonumber(getplayvar(actor, 2,
        "Luck_" .. targetLv)) or 0
    -- 每次失败 +15 点幸运，满 100 必成
    luck = luck + 15
    setplayvar(actor, "HUMAN", "Luck_" .. targetLv, luck, 1)
    if luck >= 85 then
        sendmsg(actor, 1, "幸运值高涨，感觉下次就要成了！")
    end
end

---强化的成功率：基础概率加幸运加成
function Upgrade.successRate(actor, targetLv)
    local base = UPGRADE_RATE[targetLv]      -- 基础概率
    local luck = tonumber(getplayvar(actor, 2,
        "Luck_" .. targetLv)) or 0
    local bonus = math.min(luck, 100)
    return math.min(base + bonus * 0.7, 100)
end

---幸运满值：必定成功的一次
function Upgrade.roll(actor, targetLv)
    local player = class(actor)
    if not player then return false end
    local luck = tonumber(getplayvar(actor, 2,
        "Luck_" .. targetLv)) or 0
    local rate = Upgrade.successRate(actor, targetLv)
    local success
    if luck >= 100 then
        success = true           -- 幸运满值：保底必成
    else
        success = math.random(1, 100) <= rate
    end
    if success then
        setplayvar(actor, "HUMAN", "Luck_" .. targetLv, 0, 1)
        Upgrade.applySuccess(actor, targetLv)
    else
        Upgrade.onFail(actor, targetLv)
    end
    return success
end