【网络通信】消息重试：关键信令的确认与退避重发

-- 发送方：登记待确认信令
local pending = {}
local function sendSignal(player, cmd, payload)
    local seq = tonumber(getplayvar(player, "HUMAN", "SigSeq") or 0) + 1
    setplayvar(player, "HUMAN", "SigSeq", seq, false)
    pending[seq] = {cmd = cmd, payload = payload, tries = 0}
    sendluamsg(player, 9100, seq, 0, 0, cmd .. "|" .. payload)
    return seq
end

-- 定时器：按退避间隔重发未确认信令
local player = class(actor)
local function retryTick()
    for seq, item in pairs(pending) do
        item.tries = item.tries + 1
        if item.tries > 3 then
            pending[seq] = nil
            sendmsg(player, 1, 0, "指令 " .. item.cmd .. " 发送失败，请手动重试。")
        else
            local delay = math.pow(2, item.tries - 1)
            sendluamsg(player, 9100, seq, item.tries, delay, item.cmd .. "|" .. item.payload)
        end
    end
end
setontimer(player, 9101, 60, 60, 0)