The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/) and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

Additional documentation and release notes are available at [Multiplayer Documentation](https://docs-multiplayer.unity3d.com).

## [1.11.0] - 2024-08-20

### Added

- Added `NetworkVariable.CheckDirtyState` that is to be used in tandem with collections in order to detect whether the collection or an item within the collection has changed. (#3005)

### Fixed

- Fixed issue by adding null checks in `NetworkVariableBase.CanClientRead` and `NetworkVariableBase.CanClientWrite` methods to ensure safe access to `NetworkBehaviour`. (#3011)
- Fixed issue using collections within `NetworkVariable` where the collection would not detect changes to items or nested items. (#3005)
- Fixed issue where `List`, `Dictionary`, and `HashSet` collections would not uniquely duplicate nested collections. (#3005)
- Fixed Issue where a state with dual triggers, inbound and outbound, could cause a false layer to layer state transition message to be sent to non-authority `NetworkAnimator` instances and cause a warning message to be logged. (#2999)
- Fixed issue where `FixedStringSerializer<T>` was using `NetworkVariableSerialization<byte>.AreEqual` to determine if two bytes were equal causes an exception to be thrown due to no byte serializer having been defined. (#2992)

### Changed

- Changed permissions exception thrown in `NetworkList` to exiting early with a logged error that is now a unified permissions message within `NetworkVariableBase`. (#3005)
- Changed permissions exception thrown in `NetworkVariable.Value` to exiting early with a logged error that is now a unified permissions message within `NetworkVariableBase`. (#3005)
This commit is contained in:
Unity Technologies
2024-08-20 00:00:00 +00:00
parent 896943c8bf
commit c2664dfb7f
13 changed files with 3181 additions and 96 deletions

View File

@@ -51,7 +51,6 @@ namespace Unity.Netcode
#pragma warning restore IDE0001
[Serializable]
[GenerateSerializationForGenericParameter(0)]
[GenerateSerializationForType(typeof(byte))]
public class AnticipatedNetworkVariable<T> : NetworkVariableBase
{
[SerializeField]

View File

@@ -369,7 +369,8 @@ namespace Unity.Netcode
// check write permissions
if (!CanClientWrite(m_NetworkBehaviour.NetworkManager.LocalClientId))
{
throw new InvalidOperationException("Client is not allowed to write to this NetworkList");
LogWritePermissionError();
return;
}
m_List.Add(item);
@@ -390,7 +391,8 @@ namespace Unity.Netcode
// check write permissions
if (!CanClientWrite(m_NetworkBehaviour.NetworkManager.LocalClientId))
{
throw new InvalidOperationException("Client is not allowed to write to this NetworkList");
LogWritePermissionError();
return;
}
m_List.Clear();
@@ -416,7 +418,8 @@ namespace Unity.Netcode
// check write permissions
if (!CanClientWrite(m_NetworkBehaviour.NetworkManager.LocalClientId))
{
throw new InvalidOperationException("Client is not allowed to write to this NetworkList");
LogWritePermissionError();
return false;
}
int index = m_List.IndexOf(item);
@@ -451,7 +454,8 @@ namespace Unity.Netcode
// check write permissions
if (!CanClientWrite(m_NetworkBehaviour.NetworkManager.LocalClientId))
{
throw new InvalidOperationException("Client is not allowed to write to this NetworkList");
LogWritePermissionError();
return;
}
if (index < m_List.Length)
@@ -480,7 +484,8 @@ namespace Unity.Netcode
// check write permissions
if (!CanClientWrite(m_NetworkBehaviour.NetworkManager.LocalClientId))
{
throw new InvalidOperationException("Client is not allowed to write to this NetworkList");
LogWritePermissionError();
return;
}
var value = m_List[index];
@@ -505,7 +510,8 @@ namespace Unity.Netcode
// check write permissions
if (!CanClientWrite(m_NetworkBehaviour.NetworkManager.LocalClientId))
{
throw new InvalidOperationException("Client is not allowed to write to this NetworkList");
LogWritePermissionError();
return;
}
var previousValue = m_List[index];

View File

@@ -9,7 +9,6 @@ namespace Unity.Netcode
/// <typeparam name="T">the unmanaged type for <see cref="NetworkVariable{T}"/> </typeparam>
[Serializable]
[GenerateSerializationForGenericParameter(0)]
[GenerateSerializationForType(typeof(byte))]
public class NetworkVariable<T> : NetworkVariableBase
{
/// <summary>
@@ -80,27 +79,59 @@ namespace Unity.Netcode
/// <summary>
/// The value of the NetworkVariable container
/// </summary>
/// <remarks>
/// When assigning collections to <see cref="Value"/>, unless it is a completely new collection this will not
/// detect any deltas with most managed collection classes since assignment of one collection value to another
/// is actually just a reference to the collection itself. <br />
/// To detect deltas in a collection, you should invoke <see cref="CheckDirtyState"/> after making modifications to the collection.
/// </remarks>
public virtual T Value
{
get => m_InternalValue;
set
{
// Compare bitwise
if (NetworkVariableSerialization<T>.AreEqual(ref m_InternalValue, ref value))
if (m_NetworkManager && !CanClientWrite(m_NetworkManager.LocalClientId))
{
LogWritePermissionError();
return;
}
if (m_NetworkBehaviour && !CanClientWrite(m_NetworkBehaviour.NetworkManager.LocalClientId))
// Compare the Value being applied to the current value
if (!NetworkVariableSerialization<T>.AreEqual(ref m_InternalValue, ref value))
{
throw new InvalidOperationException("Client is not allowed to write to this NetworkVariable");
T previousValue = m_InternalValue;
m_InternalValue = value;
SetDirty(true);
m_IsDisposed = false;
OnValueChanged?.Invoke(previousValue, m_InternalValue);
}
Set(value);
m_IsDisposed = false;
}
}
/// <summary>
/// Invoke this method to check if a collection's items are dirty.
/// The default behavior is to exit early if the <see cref="NetworkVariable{T}"/> is already dirty.
/// </summary>
/// <param name="forceCheck"> when true, this check will force a full item collection check even if the NetworkVariable is already dirty</param>
/// <remarks>
/// This is to be used as a way to check if a <see cref="NetworkVariable{T}"/> containing a managed collection has any changees to the collection items.<br />
/// If you invoked this when a collection is dirty, it will not trigger the <see cref="OnValueChanged"/> unless you set <param name="forceCheck"/> to true. <br />
/// </remarks>
public bool CheckDirtyState(bool forceCheck = false)
{
var isDirty = base.IsDirty();
// Compare the previous with the current if not dirty or forcing a check.
if ((!isDirty || forceCheck) && !NetworkVariableSerialization<T>.AreEqual(ref m_PreviousValue, ref m_InternalValue))
{
SetDirty(true);
OnValueChanged?.Invoke(m_PreviousValue, m_InternalValue);
m_IsDisposed = false;
isDirty = true;
}
return isDirty;
}
internal ref T RefValue()
{
return ref m_InternalValue;
@@ -185,9 +216,8 @@ namespace Unity.Netcode
private protected void Set(T value)
{
SetDirty(true);
T previousValue = m_InternalValue;
m_InternalValue = value;
OnValueChanged?.Invoke(previousValue, m_InternalValue);
OnValueChanged?.Invoke(m_PreviousValue, m_InternalValue);
}
/// <summary>
@@ -206,20 +236,22 @@ namespace Unity.Netcode
/// <param name="keepDirtyDelta">Whether or not the container should keep the dirty delta, or mark the delta as consumed</param>
public override void ReadDelta(FastBufferReader reader, bool keepDirtyDelta)
{
// In order to get managed collections to properly have a previous and current value, we have to
// duplicate the collection at this point before making any modifications to the current.
m_HasPreviousValue = true;
NetworkVariableSerialization<T>.Duplicate(m_InternalValue, ref m_PreviousValue);
NetworkVariableSerialization<T>.ReadDelta(reader, ref m_InternalValue);
// todo:
// keepDirtyDelta marks a variable received as dirty and causes the server to send the value to clients
// In a prefect world, whether a variable was A) modified locally or B) received and needs retransmit
// would be stored in different fields
T previousValue = m_InternalValue;
NetworkVariableSerialization<T>.ReadDelta(reader, ref m_InternalValue);
if (keepDirtyDelta)
{
SetDirty(true);
}
OnValueChanged?.Invoke(previousValue, m_InternalValue);
OnValueChanged?.Invoke(m_PreviousValue, m_InternalValue);
}
/// <inheritdoc />

View File

@@ -32,21 +32,47 @@ namespace Unity.Netcode
/// Maintains a link to the associated NetworkBehaviour
/// </summary>
private protected NetworkBehaviour m_NetworkBehaviour;
private NetworkManager m_InternalNetworkManager;
public NetworkBehaviour GetBehaviour()
{
return m_NetworkBehaviour;
}
internal string GetWritePermissionError()
{
return $"|Client-{m_NetworkManager.LocalClientId}|{m_NetworkBehaviour.name}|{Name}| Write permissions ({WritePerm}) for this client instance is not allowed!";
}
internal void LogWritePermissionError()
{
Debug.LogError(GetWritePermissionError());
}
private protected NetworkManager m_NetworkManager
{
get
{
if (m_InternalNetworkManager == null && m_NetworkBehaviour && m_NetworkBehaviour.NetworkObject?.NetworkManager)
{
m_InternalNetworkManager = m_NetworkBehaviour.NetworkObject?.NetworkManager;
}
return m_InternalNetworkManager;
}
}
/// <summary>
/// Initializes the NetworkVariable
/// </summary>
/// <param name="networkBehaviour">The NetworkBehaviour the NetworkVariable belongs to</param>
public void Initialize(NetworkBehaviour networkBehaviour)
{
m_InternalNetworkManager = null;
m_NetworkBehaviour = networkBehaviour;
if (m_NetworkBehaviour.NetworkManager)
if (m_NetworkBehaviour && m_NetworkBehaviour.NetworkObject?.NetworkManager)
{
m_InternalNetworkManager = m_NetworkBehaviour.NetworkObject?.NetworkManager;
if (m_NetworkBehaviour.NetworkManager.NetworkTimeSystem != null)
{
UpdateLastSentTime();
@@ -217,6 +243,11 @@ namespace Unity.Netcode
/// <returns>Whether or not the client has permission to read</returns>
public bool CanClientRead(ulong clientId)
{
if (!m_NetworkBehaviour)
{
return false;
}
switch (ReadPerm)
{
default:
@@ -234,6 +265,11 @@ namespace Unity.Netcode
/// <returns>Whether or not the client has permission to write</returns>
public bool CanClientWrite(ulong clientId)
{
if (!m_NetworkBehaviour)
{
return false;
}
switch (WritePerm)
{
default:

View File

@@ -349,7 +349,10 @@ namespace Unity.Netcode
duplicatedValue.Clear();
foreach (var item in value)
{
duplicatedValue.Add(item);
// This handles the nested list scenario List<List<T>>
T subValue = default;
NetworkVariableSerialization<T>.Duplicate(item, ref subValue);
duplicatedValue.Add(subValue);
}
}
}
@@ -421,6 +424,9 @@ namespace Unity.Netcode
duplicatedValue.Clear();
foreach (var item in value)
{
// Handles nested HashSets
T subValue = default;
NetworkVariableSerialization<T>.Duplicate(item, ref subValue);
duplicatedValue.Add(item);
}
}
@@ -497,7 +503,12 @@ namespace Unity.Netcode
duplicatedValue.Clear();
foreach (var item in value)
{
duplicatedValue.Add(item.Key, item.Value);
// Handles nested dictionaries
TKey subKey = default;
TVal subValue = default;
NetworkVariableSerialization<TKey>.Duplicate(item.Key, ref subKey);
NetworkVariableSerialization<TVal>.Duplicate(item.Value, ref subValue);
duplicatedValue.Add(subKey, subValue);
}
}
}
@@ -698,7 +709,7 @@ namespace Unity.Netcode
{
var val = value[i];
var prevVal = previousValue[i];
if (!NetworkVariableSerialization<byte>.AreEqual(ref val, ref prevVal))
if (val != prevVal)
{
++numChanges;
changes.Set(i);
@@ -723,19 +734,11 @@ namespace Unity.Netcode
unsafe
{
byte* ptr = value.GetUnsafePtr();
byte* prevPtr = previousValue.GetUnsafePtr();
for (int i = 0; i < value.Length; ++i)
{
if (changes.IsSet(i))
{
if (i < previousValue.Length)
{
NetworkVariableSerialization<byte>.WriteDelta(writer, ref ptr[i], ref prevPtr[i]);
}
else
{
NetworkVariableSerialization<byte>.Write(writer, ref ptr[i]);
}
writer.WriteByteSafe(ptr[i]);
}
}
}