unity 帧同步 怎么写代码

Unity 帧同步的实现方式有很多种，以下是一种简单的实现方式：

1. 创建一个同步管理器 SyncManager，用于管理所有需要同步的对象。

public class SyncManager : MonoBehaviour
{
    private static SyncManager instance;

    public static SyncManager Instance
    {
        get { return instance; }
    }

    private List<SyncObject> syncObjects = new List<SyncObject>();

    private void Awake()
    {
        instance = this;
    }

    public void Register(SyncObject syncObject)
    {
        syncObjects.Add(syncObject);
    }

    public void Unregister(SyncObject syncObject)
    {
        syncObjects.Remove(syncObject);
    }

    public void Sync(float deltaTime)
    {
        foreach (var syncObject in syncObjects)
        {
            syncObject.Sync(deltaTime);
        }
    }
}

2. 创建一个同步对象 SyncObject，用于表示需要同步的对象。

public abstract class SyncObject : MonoBehaviour
{
    private int syncId;

    public int SyncId
    {
        get { return syncId; }
    }

    private Vector3 lastPosition;
    private Quaternion lastRotation;

    private void Start()
    {
        syncId = SyncIdGenerator.GenerateSyncId();
        SyncManager.Instance.Register(this);
        lastPosition = transform.position;
        lastRotation = transform.rotation;
    }

    private void OnDestroy()
    {
        SyncManager.Instance.Unregister(this);
    }

    public void Sync(float deltaTime)
    {
        var position = transform.position;
        var rotation = transform.rotation;

        if (position != lastPosition || rotation != lastRotation)
        {
            lastPosition = position;
            lastRotation = rotation;
            OnSyncDataChanged();
        }
    }

    protected abstract void OnSyncDataChanged();
}

3. 创建一个同步 ID 生成器 SyncIdGenerator，用于生成每个需要同步的对象的唯一 ID。

public static class SyncIdGenerator
{
    private static int nextSyncId = 1;

    public static int GenerateSyncId()
    {
        return nextSyncId++;
    }
}

4. 创建一个同步客户端 SyncClient，用于发送和接收同步数据。

public class SyncClient : MonoBehaviour
{
    private static SyncClient instance;

    public static SyncClient Instance
    {
        get { return instance; }
    }

    private Dictionary<int, SyncData> syncDataDict = new Dictionary<int, SyncData>();

    private void Awake()
    {
        instance = this;
    }

    public void SendSyncData(int syncId, SyncData syncData)
    {
        // 发送同步数据给服务器
    }

    public void ReceiveSyncData(SyncData syncData)
    {
        syncDataDict[syncData.SyncId] = syncData;
    }

    public SyncData GetSyncData(int syncId)
    {
        if (syncDataDict.TryGetValue(syncId, out SyncData syncData))
        {
            return syncData;
        }
        return null;
    }
}

5. 创建一个同步数据 SyncData，用于表示需要同步的数据。

public class SyncData
{
    public int SyncId;
    public Vector3 Position;
    public Quaternion Rotation;
}

6. 在需要同步的对象上继承 SyncObject 类，实现 OnSyncDataChanged 方法，将需要同步的数据存储到 SyncData 中，然后发送给服务器。

public class SyncCube : SyncObject
{
    protected override void OnSyncDataChanged()
    {
        var syncData = new SyncData
        {
            SyncId = SyncId,
            Position = transform.position,
            Rotation = transform.rotation
        };
        SyncClient.Instance.SendSyncData(SyncId, syncData);
    }
}

7. 在服务器上接收同步数据，然后发送给所有客户端。

public class SyncServer : MonoBehaviour
{
    private static SyncServer instance;

    public static SyncServer Instance
    {
        get { return instance; }
    }

    private List<SyncData> syncDataList = new List<SyncData>();

    private void Awake()
    {
        instance = this;
    }

    public void ReceiveSyncData(int clientId, SyncData syncData)
    {
        syncDataList.Add(syncData);
    }

    public void Sync(float deltaTime)
    {
        foreach (var syncData in syncDataList)
        {
            // 发送同步数据给所有客户端
        }
        syncDataList.Clear();
    }
}

8. 在客户端上定时接收同步数据，并更新需要同步的对象的状态。

public class SyncClient : MonoBehaviour
{
    // ...

    private void Update()
    {
        Sync(float deltaTime);
        ReceiveSyncData();
        UpdateSyncObjects();
    }

    private void ReceiveSyncData()
    {
        // 接收同步数据
    }

    private void UpdateSyncObjects()
    {
        foreach (var syncObject in SyncManager.Instance.SyncObjects)
        {
            var syncData = GetSyncData(syncObject.SyncId);
            if (syncData != null)
            {
                syncObject.transform.position = syncData.Position;
                syncObject.transform.rotation = syncData.Rotation;
            }
        }
    }
}

以上就是一种简单的 Unity 帧同步的实现方式，具体实现方式可以根据需求和场景进行修改和扩展。