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[unity3d] Network(3) -- ChatRoom(RPC)

2011-02-26 19:07:10| 分类： 3d_unity | 标签： |举报 |字号大中小订阅

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例子的源文件：

https://github.com/kasicass/kasicass/tree/master/unity3d/NetworkDemo/03_ChatRoom

RPC是个好东西。以 ChatRoom 为例子，我们来看看如何使用之。

先弄个连接管理的代码 Connection.js：

-----------------------------------------------------------------------------------------

var ServerAddr : String = "127.0.0.1";
var ServerPort : int = 2224;

function OnGUI()
{
 GUILayout.BeginArea(Rect(Screen.width-200,0,200,200));

 if (Network.peerType == NetworkPeerType.Disconnected)
 {
  GUILayout.Label("Connection status: Disconnected");

  ServerAddr = GUILayout.TextField(ServerAddr, GUILayout.MinWidth(100));
  ServerPort = parseInt(GUILayout.TextField(ServerPort.ToString()));

  if (GUILayout.Button("Connect as client"))
  {
   Network.Connect(ServerAddr, ServerPort);
  }

  if (GUILayout.Button("Start Server"))
  {
   Network.InitializeServer(32, ServerPort, false);
  }
 }
 else
 {
  if (Network.peerType == NetworkPeerType.Connecting)
  {
   GUILayout.Label("Connection status: Connecting");
  }
  else if (Network.peerType == NetworkPeerType.Client)
  {
   GUILayout.Label("Connection status: Connected");
  }
  else if (Network.peerType == NetworkPeerType.Server)
  {
   GUILayout.Label("Connection status: Server!");
   GUILayout.Label("Connection: " + Network.connections.length);
  }

  if (GUILayout.Button("Disconnect"))
  {
   Network.Disconnect(200);
  }
 }

 GUILayout.EndArea();
}

-----------------------------------------------------------------------------------------

然后弄个 Chat.js，负责写聊天的逻辑：

-----------------------------------------------------------------------------------------

var chatWords : String = "";
var inputWord : String = "input words here.";

function OnGUI ()
{
 if (Network.isClient)
 {
  GUILayout.BeginArea(Rect(0,0,300,600));
  GUILayout.TextArea(chatWords);
  GUILayout.BeginHorizontal();
  inputWord = GUILayout.TextArea(inputWord);
  if (GUILayout.Button("Send"))
  {
   networkView.RPC("SomeoneSay", RPCMode.All, inputWord);
   inputWord = "";
  }
  GUILayout.EndHorizontal();

  if (GUILayout.Button("Disconnect"))
  {
   Network.Disconnect(200);
  }
  GUILayout.EndArea();
 }
}

@RPC
function SomeoneSay(sayWord : String, info : NetworkMessageInfo)
{
 chatWords = chatWords + "\n" + info.sender + ":" + sayWord;
}

-----------------------------------------------------------------------------------------

好，代码就完毕了。继续下面的一些拖拽操作：

1. 建立一个场景，把 Connection.js、Chat.js 绑到 MainCamera 上

2. 给 MainCamera 弄个 NetworkView Component，并将 State Synchronization = off，因为不需要同步位置等等信息。

3. 运行一下，哈哈，是不是很简单。

代码细解

通过 networkView.RPC("funcname", RPCMode, args ...) 调用 remote function。

其中 RPCMode 可以决定哪些人可以收到此 RPC，具体参见：http://unity3d.com/support/documentation/ScriptReference/RPCMode.html

以 @RPC 开头的函数，则为被调用的函数。RPC函数最后的 info 参数是可选项，表示 sender 的一些信息。

Unity网络层核心思想

把这个 ChatRoom 完成，我才真正理解了 Unity 对网络层的管理。:-P

Scene ==1:N ==> GameObject ==1:N==> Component。

一个场景挂着多个 GameObject，每个 GameObject 上挂了很多 Component （比如 NetworkView、各个Script 等等）

一个 GameObject 要挂上一个 NetworkView，这个 GameObject 才能收发网络数据。对，数据的收发，都是针对一个个 GameObject 而言的。

参考资料

RPC Details，http://unity3d.com/support/documentation/Components/net-RPCDetails.html

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