使用Photon Fusion在Unity中制作棋盘游戏

在Unity中使用Photon Fusion官方提供的API实现实时多人游戏，如下所示：

1.创建游戏房间

using Photon.Pun;

public class CreateRoom : MonoBehaviourPunCallbacks
{
    public void OnClick_CreateRoom()
    {
        PhotonNetwork.CreateRoom(null, newRoomOptions {MaxPlayers = 2});
    }

    public override void OnCreatedRoom()
    {
        Debug.Log("Room created successfully.");
    }

    public override void OnCreateRoomFailed(short returnCode, string message)
    {
        Debug.Log("Room creation failed: " + message);
    }
}

2.加入游戏房间

using Photon.Pun;

public class JoinRoom : MonoBehaviourPunCallbacks
{
    public void OnClick_JoinRoom()
    {
        PhotonNetwork.JoinRandomRoom();
    }

    public override void OnJoinedRoom()
    {
        Debug.Log("Joined room successfully.");
    }

    public override void OnJoinRandomFailed(short returnCode, string message)
    {
        Debug.Log("Join room failed: " + message);
    }
}

3.实现回合制游戏，例如：“井字棋”

using Photon.Pun;
using System.Collections.Generic;

public class TicTacToe : MonoBehaviourPunCallbacks, IPunTurnManagerCallbacks
{
    // 存放棋子状态的数组
    private int[] board = new int[9];
    // 移动次数
    private int moveCount = 0;
    // 轮流操作的玩家ID
    private int activePlayer = 0;
    // 存放所有玩家的ID
    private List playerList = new List();

    private IPunTurnManager turnManager;

    private void Start()
    {
        turnManager = GetComponent();
        
        // 初始化棋盘
        for(int i = 0; i < board.Length; i++)
        {
            board[i] = -1;
        }
    }

    // 玩家点击一个空位置放棋子
    public void OnPhotonSerializeView(int[] data, PhotonStream stream)
    {
        if (stream.IsWriting)
        {
            stream.SendNext(data);
        }
        else if(stream.IsReading)
        {
            data = (int[])stream.ReceiveNext();
        }

        // 点击一个空位置的数据格式：[位置, 玩家ID]
        if(data[1] == PhotonNetwork.LocalPlayer.ActorNumber)
        {
            board[data[0]] = activePlayer;
            moveCount++;

            if(IsWin())
            {
                Debug.Log("Player " + activePlayer.ToString() + "wins!");
            }
            else
            {
                activePlayer = (activePlayer + 1) % 2;
                turnManager.SendMove(moveCount, board, true);
            }
        }
    }

    // 检测是否有玩家胜利
    private bool IsWin()
    {
        for(int i = 0; i < 3; i++)
        {
            if(board[i*3] != -1 && board[i*3] == board[i*3+1] && board[i*3+1] == board[i*3+2])
            {
                return true;
            }

            if (board[i] != -1 && board[i] == board[i + 3] && board[i + 3] == board[i + 6])
            {
                return true;
            }
        }

        if(board[0] != -1 && board[0