【策划架构】Lua手写序列化：裁决之杖属性表的存档编码

local function saveWand(actor, attr)
    setsysvarex("WAND_ATTR", tostring(attr), 1)
    -- 存下的是 "table: 0x..."，回读即废
end

local function saveWand(actor, attr)
    local parts = {}
    for k, v in pairs(attr) do
        parts[#parts + 1] = k .. "|" .. tostring(v)
    end
    setsysvarex("WAND_ATTR", table.concat(parts, ";"), 1)
end
local function loadWand(actor)
    local attr = {}
    for pair in string.gmatch(getsysvar("WAND_ATTR"), "[^;]+") do
        local k, v = string.match(pair, "^(.-)|(.+)$")
        attr[k] = tonumber(v) or v
    end
    sendmsg(actor, 1, "裁决之杖攻击 " .. (attr.atk or 0))
end