【策划架构】Lua接口幂等：沙巴克结算重复请求的单号去重

local function claim(actor, exp)
    setplayvar(actor, "EXP_ADD", exp)   -- 重放一次发一次
end

local done = {}
local function claim(actor, orderId, exp)
    if done[orderId] then
        sendmsg(actor, 1, "该奖励已领取过")
        return
    end
    done[orderId] = true               -- 落闸先于发货
    setplayvar(actor, "EXP_ADD", exp)
    sendmsg(actor, 1, "沙巴克结算 " .. exp .. " 经验")
end
claim(actor, "SBK-1001", 5000)