blocks|key|4895903|text|半条命2，反击:源等都使用气门源引擎。Valve有一个涵盖了很多东西的developer+wiki+(它很酷，看看吧！)|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|4895904|这些文章可能会让您感兴趣：|4895905|Latency+Compensating+Methods+in+Client/Server+In-game+Protocol,+Design+and+Optimization|4895906|Source+Multiplayer+Networking|4895907|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.valvesoftware.com/wiki/SDK_Docs|1|http://developer.valvesoftware.com/wiki/Latency_Compensating_Methods_in_Client/Server_In-game_Protocol_Design_and_Optimization|2|http://developer.valvesoftware.com/wiki/Source_Multiplayer_Networking^0|Z|E|0|0|0|0|2F|1|0|0|T|2|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@$A|W|B|X|1|Y]]|C|$]]|$1|D|3|E|5|6|7|Z|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|10|8|@]|9|@$A|11|B|12|1|13]]|C|$]]|$1|H|3|I|5|6|7|14|8|@]|9|@$A|15|B|16|1|17]]|C|$]]|$1|J|3|-4|5|6|7|18|8|@]|9|@]|C|$]]]|K|$L|$5|M|N|O|C|$P|Q]]|R|$5|M|N|O|C|$P|S]]|T|$5|M|N|O|C|$P|U]]]]

Half-Life 2, Counter-Strike:Source etc all use Valves Source engine. Valve has a <a href="http://developer.valvesoftware.com/wiki/SDK_Docs" rel="noreferrer">developer wiki</a> which covers a lot of stuff (its pretty cool check it out!)...

These articles might interest you:

<a href="http://developer.valvesoftware.com/wiki/Latency_Compensating_Methods_in_Client/Server_In-game_Protocol_Design_and_Optimization" rel="noreferrer">Latency Compensating Methods in Client/Server In-game Protocol, Design and Optimization</a>

<a href="http://developer.valvesoftware.com/wiki/Source_Multiplayer_Networking" rel="noreferrer">Source Multiplayer Networking</a>

blocks|key|1280010|text|你应该看看Luigi+Auriemmas+papers+on+Half-Life。你还可以在那里找到一个数据包解码器和一些反汇编算法。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1280011|关于Half-Life+2的逆向工程信息可能很难获得，因为它与作弊相关。我猜像mpcforum这样的电路板是你最好的选择。|1280012|entityMap|0|LINK|mutability|MUTABLE|url|http://aluigi.altervista.org/papers.htm|1|http://www.mpcforum.com/^0|5|M|0|0|13|8|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]]]

You should check out <a href="http://aluigi.altervista.org/papers.htm" rel="noreferrer">Luigi Auriemmas papers</a> on Half-Life. You'll find a packet decoder and some disassembled algorithms there, too.

Reverse engineering information on Half-Life 2 may be hard to come by, because of its relevance for cheating. I'd guess boards like <a href="http://www.mpcforum.com" rel="noreferrer">mpcforum</a> are your best bet.

blocks|key|4051094|text|这是一个非常复杂的问题，我的建议是看看一些开源的网络游戏引擎：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4051095|4051096|http://www.hawksoft.com/hawknl/|unordered-list-item|offset|length|4051097|http://www.zoidcom.com/|4051098|http://sourceforge.net/projects/opentnl|4051099|http://www.gillius.org/gne/|4051100|4051101|您还可以查看最初的半寿命引擎所基于的quake系列的源代码。|4051102|entityMap|0|LINK|mutability|MUTABLE|url|1|2|3^0|0|0|0|V|0|0|0|N|1|0|0|13|2|0|0|R|3|0|0|0^^$0|@$1|2|3|4|5|6|7|10|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|11|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|12|8|@]|9|@$F|13|G|14|1|15]]|A|$]]|$1|H|3|I|5|E|7|16|8|@]|9|@$F|17|G|18|1|19]]|A|$]]|$1|J|3|K|5|E|7|1A|8|@]|9|@$F|1B|G|1C|1|1D]]|A|$]]|$1|L|3|M|5|E|7|1E|8|@]|9|@$F|1F|G|1G|1|1H]]|A|$]]|$1|N|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|1J|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|1K|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|D]]|X|$5|T|U|V|A|$W|I]]|Y|$5|T|U|V|A|$W|K]]|Z|$5|T|U|V|A|$W|M]]]]

This is a really complicated question, my suggestion would be to look at some of the open source network game engines:

<ul>
<li><a href="http://www.hawksoft.com/hawknl/" rel="nofollow noreferrer">http://www.hawksoft.com/hawknl/</a></li>
<li><a href="http://www.zoidcom.com/" rel="nofollow noreferrer">http://www.zoidcom.com/</a></li>
<li><a href="http://sourceforge.net/projects/opentnl" rel="nofollow noreferrer">http://sourceforge.net/projects/opentnl</a></li>
<li><a href="http://www.gillius.org/gne/" rel="nofollow noreferrer">http://www.gillius.org/gne/</a></li>
</ul>

You could also look at the source code for the quake series upon which the original half life engine is based.

blocks|key|4051233|text|尽管细节可能会有所不同，但总体框架已经相当陈旧了。下面是一个快速概述：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|4051234|在早期的fps游戏中，例如末日和地震，玩家的位置只会在服务器对你的移动命令的响应中更新。也就是说，你按下了前移按钮，客户端将你的位置传递给服务器，服务器在内存中更新你的位置，然后用你的新位置将新的游戏状态传递给你的客户端。这导致了非常滞后的游戏:射击，甚至在狭窄的走廊里移动都是一种预测滞后的游戏。|4051235|较新的游戏允许客户自己处理玩家的射击和移动。虽然这导致了无延迟的移动和射击，但它通过黑客攻击客户端代码打开了更多的作弊可能性。现在，每个玩家都在自己的计算机上独立移动和射击，并将他们所做的事情传达给服务器。只有当两个玩家互相碰撞或试图同时接通电源时，它才会崩溃。|4051236|现在服务器有来自每个玩家的客户端状态流，并且必须同步它们，并使它们成为一个连贯的游戏。诀窍是测量每个玩家的延迟。最终的目标是能够发射一个非常低延迟的武器(如狙击步枪或轨道枪)到敌人的侧面移动，并使其正确命中。如果每个玩家的等待时间都是已知的，假设玩家A(等待时间50ms)向B开枪(等待时间60ms)。要命中目标，投篮必须击中B，B在60毫秒前，而A在50毫秒前。|4051237|这是一个非常粗略的概述，但应该可以让您大致了解。|4051238|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|M|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|N|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|O|8|@]|9|@]|A|$]]|$1|H|3|I|5|6|7|P|8|@]|9|@]|A|$]]|$1|J|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|K|$]]

Though details might differ, the general framework is pretty old. Here's a quick overview:

In early fps games such as doom and Quake the player's position was updated only on the server's response to your move command. That is, you pressed the move-forward button and the client communicated that to the server, the server udpated your position on its memory and then relayed a new game-state to your client with your new position. This led to very laggy play: shooting, even moving in narrow corridors was a game of predicting lag.

Newer games let the client handle the player's shooting and movement by themselves. Though this led to lag-less movement and fire it opened more possibilities of cheating by hacking the client code. Now every player moves and fires independently on their own computer and communicates to the server what they have done. This only breaks down when two players bump into one another or try to catch a power up at the same time.

Now the server has this stream of client state coming from each player and has to sync them and make a coherent game out of them. The trick is to measure each player's latency. The ultimate goal is to be able to fire a very low latency weapon (such as sniper rifle or railgun) on an enemy moving sideways and have it hit correctly. If the latency from each player is know, suppose player A (latency 50ms) fires a gun on B (latency 60ms). To make a hit, the shot has to hit B where B was 60ms ago, from where A was 50ms ago.

That's a very rough overview but should give you the general idea.

blocks|key|832869|text|我建议你研究一下Quake+1-3引擎。它们可以在源代码中找到。半衰期的协议可能有点不同，但很可能足够接近。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|832870|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I suggest that you look into Quake 1-3 engines. They are available with source code. Half-life's protocol might be a bit different but most likely close enough.

I was wondering how the Half-Life 2 multiplayer protocol works in mods like Counter-Strike: Source or Day Of Defeat: Source. I believe that they use some kind of obfuscation and proprietary compression algorithm. I would like to know how different kinds of messages are encoded in a packet.

How does the Half-Life 2 multiplayer protocol work?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我想知道半条命2多人协议是如何在mods中工作的，比如反恐:来源或失败的一天:来源。我相信他们使用了某种模糊和专有的压缩算法。我想知道不同类型的消息是如何编码在数据包中的。

问半条命2多人协议是如何工作的？
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