簡易FSMでPhoton Cloudを管理してみた感じ。 イベント駆動で管理しやすくなったが、ちょっと冗長

NetworkBase.cs

using UnityEngine;
using System.Collections;

public abstract class NetworkBase : MonoBehaviour
{  	
	/// <summary>
	/// FSMのステータスを切り替える
	/// </summary>
	/// <typeparam name='T'>
	/// The 1st type parameter.
	/// </typeparam>
	public void ChangeFSM<T> () where T : NetworkBase
	{
		NetworkBase[] b = GetComponents<NetworkBase> ();
		foreach (NetworkBase c in b) {
			c.enabled = (c is T);
		}
	}
}

NetworkConnect.cs

using UnityEngine;
using System.Collections;

public class NetworkConnect : MonoBehaviour
{
  void OnEnable ()
	{
		// Photon Cloud サーバー接続
		PhotonNetwork.ConnectUsingSettings ("0.1");
	}

	void OnJoinedLobby ()
	{
		// 状態”ロビー”をenableに
		GetComponent<NetworkLoby> ().enabled = true;
	}
}

NetworkLoby.cs

using UnityEngine;
using System.Collections;

public class NetworkLoby : NetworkBase
{
  void OnGUI ()
	{
		// 部屋を作る
		
		if (GUILayout.Button ("create room", GUILayout.Height (60))) {
			PhotonNetwork.CreateRoom (
						null, // ユニークな部屋名
						true, // リストに表示可能かどうか
						true, // 入場可能か
						4, //  最大人数
						new Hashtable (){{"isGamePlay", false} }, // ルーム共有プロパティ
						new string[] { "isGamePlay"}); // ロビーで取得可能なプロパティ一覧
		}
	
		// 部屋一覧

		foreach (RoomInfo room in PhotonNetwork.GetRoomList()) {
			
			// 部屋情報
			
			GUILayout.Label (string.Format ("{0} player({1}/{2}) isGamePlay({3})", 
					room.name, //部屋名
					room.playerCount, //部屋の入場人数
					room.maxPlayers, //最大人数
					room.customProperties ["isGamePlay"]));	// 部屋のステータス
			
			// 入室
			
			if (room.open && GUILayout.Button ("join")) {
				PhotonNetwork.JoinRoom (room);
			}
		}
	}
	
	void OnJoinedRoom ()
	{
		// 状態を”部屋”に変更
		ChangeFSM<NetworkRoom> ();
	}
}

NetworkRoom.cs

using UnityEngine;
using System.Collections;

public class NetworkRoom : NetworkBase
{
  public Room room{get; private set;}
	
	void OnEnable()
	{
		room = PhotonNetwork.room;
	}
	
	void OnGUI ()
	{
		GUILayout.Label ("room name..." + room.name);
		GUILayout.Label ("playercount..." + room.playerCount);

		// ルーム共有プロパティを更新
		
		if (GUILayout.Button ("isGamePlay..." + room.customProperties ["isGamePlay"])) {
			Hashtable hash = room.customProperties;
			hash ["isGamePlay"] = !(bool)hash ["isGamePlay"];
			room.SetCustomProperties (hash);
		}
		
		// 入室可能か
		
		if (GUILayout.Button ("isLock..." + !room.open)) {
			room.open = !room.open;
		}
		
		// 部屋から抜ける
		
		if (GUILayout.Button ("leave room")) {
			PhotonNetwork.LeaveRoom ();
		}
	}
		
	void OnLeftRoom ()
	{
		// 状態を”ロビー”に変更
		ChangeFSM<NetworkLoby> ();
		room = null;
	}
}