【高级技巧】Lua路径取值：裁决之杖组队配置的深层安全下探

local function exp(cfg)
    if cfg.pvp and cfg.pvp.team then
        return cfg.pvp.team.exp    -- 每条路径都要手写判空树
    end
    return 0
end

-- 裁决之杖专属系数：pvp.team.exp
local function dig(t, path)
    local cur = t
    for k in string.gmatch(path, "[^.]+") do
        if type(cur) ~= "table" then return nil end
        cur = cur[k]               -- 逐段安全下探
    end
    return cur
end
sendmsg(actor, 1, "组队经验系数 "
    .. tostring(dig(CFG, "pvp.team.exp") or 1))