【Lua实战】配置合并：默认值与覆盖项的合并写法

-- 配置合并：递归覆盖
local function deepMerge(base, override)
    local result = {}
    for k, v in pairs(base) do
        result[k] = v
    end
    for k, v in pairs(override) do
        if type(v) == "table" and type(result[k]) == "table" then
            result[k] = deepMerge(result[k], v)
        else
            result[k] = v
        end
    end
    return result
end
local player = class(actor)
local cfg = deepMerge(
    {drop = 2, boss = {hp = 100, speed = 5}},
    {boss = {hp = 150}})

-- 三层叠加：合并生成最终配置
local player = class(actor)
local function mergeAll(global, template, instance)
    local step1 = deepMerge(global, template or {})
    return deepMerge(step1, instance or {})
end
local final = mergeAll(
    {duration = 3600, reward = {gold = 100}},
    {reward = {gold = 200}},
    {duration = 1800})
sendmsg(player, 1, 0, "最终配置：时长 " .. final.duration ..
    " 秒，金币 " .. final.reward.gold .. "。")