Unity-Networking

using UnityEngine;
using System.Collections;
using ChatState;
using UnityEngine.UI;
public class InputChat : MonoBehaviour {

    static public InputChat instance;
    public InputField inputField;
    void Awake()
    {
        instance = this;
    }

    public event finishInputHandler finishInputEvent;
	
    public void OnFinishInput()
    {
        finishInputEvent(inputField.text);
    } 
}


using UnityEngine;
using System.Collections;
using UnityEngine.UI;
public class ShowChat : MonoBehaviour {

    static public ShowChat instance;
    public Text textShow;
    public string ChatContent
    {
        get { return textShow.text; }
        set { textShow.text = value; }
    }

    void Awake()
    {
        instance = this;
	}

}


using UnityEngine;
using System.Collections;
using UnityEngine.Networking;
public class PlayerChat : NetworkBehaviour {

    [SyncVar(hook = "SetContent")]//同步變量  所有的客戶端同步內容
    string chatContent;    //SetContent方法裏的參數就是chatContent

    int maxContentLenth = 2000;//內容長度

	void Start () {
        //如果是本地玩家，添加給服務器
        if(isLocalPlayer)
            InputChat.instance.finishInputEvent += AddContent;
	}

    //客戶端調用服務器的方法
    void AddContent(string content)
    {
        Cmd_UpdateContent(PlayerInfo.name + "說:" + content);
    }
	
	[Command]//服務器執行的方法(方法名字前必須是Cmd開頭)
    void Cmd_UpdateContent(string content)
    {
        string str = ShowChat.instance.ChatContent;
        str +=content+"\n";
        if(str.Length>maxContentLenth)
        {
            str = str.Substring(str.Length - maxContentLenth, maxContentLenth);
        }
        chatContent = str;
    }

    [Client] //客戶端執行
    void SetContent(string content)
    {
        ShowChat.instance.ChatContent = content;
    }
}


using UnityEngine;
using System.Collections;

namespace ChatState{

    public delegate void finishInputHandler(string content);
}


using UnityEngine;
using System.Collections;
using UnityEngine.UI;
public class PlayerInfo : MonoBehaviour {

    static public string name;

    public InputField inputField;
	void Start () {
	
	}
	
    public void SetName()
    {
        name = inputField.text;
    }
}


using UnityEngine;
using System.Collections;
using UnityEngine.Networking;

public class ServerUI : MonoBehaviour {

	void Start () {
        NetworkManager.singleton.networkAddress = "localhost";//ip地址
        NetworkManager.singleton.networkPort = 7777;//端口號
	}
	public void StartHost()  //創建聊天室按鈕
    {
        NetworkManager.singleton.StartHost();
    }
    public void StartClient()  //加入聊天室按鈕
    {
        NetworkManager.singleton.StartClient();
    }
}