【网络通信】发送合并：同帧消息的打包下发

-- 发送合并：同帧缓冲
local player = class(actor)
local frameBuf = {}
local URGENT_TYPE = {combat = true, trade = true}
local function pushMsg(player, msgType, content)
    if URGENT_TYPE[msgType] then
        sendmsg(player, 1, 0, content)
        return
    end
    local b = frameBuf[msgType]
    if b == nil then
        b = {}
        frameBuf[msgType] = b
    end
    b[#b + 1] = content
end

-- 帧末下发：打包与分片
local player = class(actor)
local function flushFrame(player)
    local parts = {}
    for msgType, msgs in pairs(frameBuf) do
        parts[#parts + 1] = msgType .. "#" .. #msgs .. "#" .. table.concat(msgs, "~")
    end
    frameBuf = {}
    if #parts == 0 then return end
    local payload = table.concat(parts, "||")
    local total = math.ceil(#payload / 8000)
    for i = 1, total do
        sendluamsg(player, 9995, i, total, 0, string.sub(payload, (i - 1) * 8000 + 1, i * 8000))
    end
end