第十一篇：Unity与UE4的通信机制（一）：Unity与Unity通信

今天开始为大家介绍一下unity和UE4的通信机制，如何实现两个PC端或者PC端与移动端的通信，包括Unity与Unity的通信，UE4与UE4的通信，UE4与Unity的通信，首先今天给大家介绍一下Unity与Unity之间的通信。
这里我主要使用的是Networking下的NetworkServe和NetworkClient建立服务器端和客户端。

服务器端using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.UI;
using System;public class MyNetworkManager : MonoBehaviour
{/// 要发送的信息public InputField send;/// 显示信息public Text info;/// 网络客户端private NetworkClient myClient;/// 用户信息分类private const short userMsg = 64;void Start (){info.text = "Start...";myClient = new NetworkClient ();}/// <summary>/// 建立服务器/// </summary>public void SetupServer (){if (!NetworkServer.active) {ShowMsg ("setup server");ServerRegisterHandler ();NetworkServer.Listen (10000);  //端口号，随便你自己定义if (NetworkServer.active) {ShowMsg ("Server setup ok.");}}}/// <summary>/// 停止服务器端/// </summary>public void ShutdownServer (){if (NetworkServer.active) {ServerUnregisterHandler ();NetworkServer.DisconnectAll ();NetworkServer.Shutdown ();if (!NetworkServer.active) {ShowMsg ("shut down server");}}}/// <summary>/// 服务器端有客户端连入事件/// </summary>/// <param name="netMsg">Net message.</param>private void OnServerConnected (NetworkMessage netMsg){ShowMsg ("One client connected to server");}/// <summary>/// 服务器端有客户端断开事件/// </summary>/// <param name="netMsg">Net message.</param>private void OnServerDisconnected (NetworkMessage netMsg){ShowMsg ("One client connected from server");}/// <summary>/// 服务器端错误事件/// </summary>/// <param name="netMsg">Net message.</param>private void OnServerError (NetworkMessage netMsg){ServerUnregisterHandler ();ShowMsg ("Server error");}/// <summary>/// 显示信息/// </summary>/// <param name="Msg">Message.</param>private void ShowMsg (string Msg){info.text = Msg + "\n\r" + info.text;//Debug.Log (Msg);}/// <summary>/// 服务器端向所有客户端发送信息/// </summary>public void ServerSend (){if (NetworkServer.active) {UserMsg um = new UserMsg ();um.message = send.text;if (NetworkServer.SendToAll (userMsg, um)) {ShowMsg ("Server send:" + send.text);}}}/// <summary>/// 服务器端收到信息事件/// </summary>/// <param name="netMsg">Net message.</param>private void ServerGet (NetworkMessage netMsg){UserMsg Msg = netMsg.ReadMessage<UserMsg> ();ShowMsg ("Server get:"+Msg.message);}/// <summary>/// 服务器端注册事件/// </summary>private void ServerRegisterHandler(){NetworkServer.RegisterHandler (MsgType.Connect, OnServerConnected);NetworkServer.RegisterHandler (MsgType.Disconnect, OnServerDisconnected);NetworkServer.RegisterHandler (MsgType.Error, OnServerError);NetworkServer.RegisterHandler (userMsg, ServerGet);}/// <summary>/// 服务器端注销事件/// </summary>private void ServerUnregisterHandler(){NetworkServer.UnregisterHandler (MsgType.Connect);NetworkServer.UnregisterHandler (MsgType.Disconnect);NetworkServer.UnregisterHandler (MsgType.Error);NetworkServer.UnregisterHandler (userMsg);}
}

客户端using UnityEngine;
using UnityEngine.Networking;
using UnityEngine.UI;
using System;public class MyNetworkManager : MonoBehaviour
{// 服务器ip地址public InputField ip;   // 服务器端口public InputField port;//要发送的信息public InputField send;//显示信息public Text info;//网络客户端private NetworkClient myClient;//用户信息分类private const short userMsg = 64;void Start (){info.text = "Start...";myClient = new NetworkClient ();}//建立客户端public void SetupClient (){if (!myClient.isConnected) {ShowMsg ("setup client");ClientRegisterHandler ();myClient.Connect (ip.text, int.Parse (port.text));}}//停止客户端public void ShutdownClient (){if (myClient.isConnected) {ClientUnregisterHandler ();myClient.Disconnect ();//NetworkClient.Shutdown()使用后，无法再次连接。//This should be done when a client is no longer going to be used.//myClient.Shutdown ();}}// 客户端连接到服务器事件private void OnClientConnected (NetworkMessage netMsg){ShowMsg ("Client connected to server");}//客户端从服务器断开事件private void OnClientDisconnected (NetworkMessage netMsg){ShowMsg ("Client disconnected from server");}//客户端错误事件private void OnClientError (NetworkMessage netMsg){ClientUnregisterHandler ();ShowMsg ("Client error");}//显示信息private void ShowMsg (string Msg){info.text = Msg + "\n\r" + info.text;//Debug.Log (Msg);}// 客户端向服务器端发送信息public void ClientSend (){if (myClient.isConnected) {UserMsg um = new UserMsg ();um.message = send.text;if (myClient.Send (userMsg, um)) {ShowMsg ("Client send:" + send.text);}}}//客户端接收到服务器端信息事件private void ClientGet (NetworkMessage netMsg){UserMsg Msg = netMsg.ReadMessage<UserMsg> ();ShowMsg ("Client get:"+Msg.message);}//客户端注册事件private void ClientRegisterHandler(){myClient.RegisterHandler (MsgType.Connect, OnClientConnected); myClient.RegisterHandler (MsgType.Disconnect, OnClientDisconnected);myClient.RegisterHandler (MsgType.Error, OnClientError);myClient.RegisterHandler (userMsg, ClientGet);}//客户端注销事件private void ClientUnregisterHandler(){myClient.UnregisterHandler (MsgType.Connect);myClient.UnregisterHandler (MsgType.Disconnect);myClient.UnregisterHandler (MsgType.Error);myClient.UnregisterHandler (userMsg);}
}

这个示例只是简单的给大家实现了服务器和客户端的一个互传消息，在此基础上大家可以尽情的扩展。

Demo地址：https://download.csdn.net/download/sxx930923/10903377

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第十一篇：Unity与UE4的通信机制（一）：Unity与Unity通信

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