【高级技巧】配置热更：写时复制与引用原子替换

local CONFIG = { dropRate = 500, coinRate = 100 }
local function publishConfig(newTbl)
    newTbl.version = (CONFIG.version or 0) + 1
    CONFIG = newTbl
    sendmsg(nil, 1, "配置已发布，版本 " .. newTbl.version)
end
local function buildNewConfig(dropRate)
    local newTbl = {}
    for k, v in pairs(CONFIG) do
        newTbl[k] = v
    end
    newTbl.dropRate = dropRate
    return newTbl
end

local function settleWithConfig(actor)
    actor = getplayerbyname(actor)
    local cfg = CONFIG
    local ver = cfg.version
    local coin = math.floor(100 * cfg.coinRate / 100)
    if CONFIG.version ~= ver then
        sendmsg(actor, 1, "结算期间配置已更新，本次按旧版执行。")
    end
    giveitem(actor, "金条", coin)
end