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performance optimizations

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This commit is contained in:
in0finite 2022-05-04 02:37:00 +02:00
parent d4871f254b
commit 9bf580291f
1 changed files with 52 additions and 40 deletions
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92
Assets/Scripts/Networking/TransformSyncer.cs
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@ -2,7 +2,6 @@ using UnityEngine;
using Mirror;
using SanAndreasUnity.Utilities;
using System.Collections.Generic;
using System.Linq;
namespace SanAndreasUnity.Net
{
@ -77,9 +76,6 @@ namespace SanAndreasUnity.Net
// timestamp of server when this data was sent (batch timestamp)
public double sentNetworkTime;
// network time when this data was received
public double receivedNetworkTime;
public void Apply(Transform tr)
{
tr.localPosition = this.Position;
@ -92,10 +88,18 @@ namespace SanAndreasUnity.Net
private readonly NetworkBehaviour m_networkBehaviour;
private readonly Queue<GameObject> m_visualizationQueue = new Queue<GameObject>();
private Queue<GameObject> m_visualizationQueue = null; // null to save memory
private readonly Queue<SyncData> m_syncDataBuffer = new Queue<SyncData>();
public int SnapshotBufferCount => m_syncDataBuffer.Count;
// Buffer which holds received snapshots, ordered by remote timestamp. Queue seems to be better
// choice than List, because
// we often remove multiple elements from it, so the comparison boils down to: Dequeue() multiple
// times vs RemoveRange().
private Queue<SyncData> m_syncDataBuffer = null; // null to save memory server-side
public int SnapshotBufferCount => m_syncDataBuffer?.Count ?? 0;
// cached for fast access, otherwise we would have to iterate through Queue
private SyncData m_lastAddedSnapshot;
@ -127,7 +131,6 @@ namespace SanAndreasUnity.Net
var syncData = new SyncData();
syncData.sentNetworkTime = NetworkClient.connection.remoteTimeStamp;
syncData.receivedNetworkTime = NetworkTime.time;
syncData.Position = reader.ReadVector3();// + syncData.velocity * this.syncInterval;
syncData.Rotation = Quaternion.Euler(reader.ReadVector3());
@ -158,12 +161,18 @@ namespace SanAndreasUnity.Net
{
if (!m_parameters.visualize || m_parameters.maxNumVisualizations <= 0)
{
while (m_visualizationQueue.Count > 0)
Object.Destroy(m_visualizationQueue.Dequeue());
if (m_visualizationQueue != null)
{
while (m_visualizationQueue.Count > 0)
Object.Destroy(m_visualizationQueue.Dequeue());
m_visualizationQueue = null;
}
return;
}
m_visualizationQueue ??= new Queue<GameObject>();
while (m_visualizationQueue.Count >= m_parameters.maxNumVisualizations)
Object.Destroy(m_visualizationQueue.Dequeue());
@ -187,23 +196,27 @@ namespace SanAndreasUnity.Net
{
if (m_parameters.clientUpdateType != ClientUpdateType.SnapshotInterpolation)
{
m_syncDataBuffer.Clear();
m_syncDataBuffer = null;
return;
}
m_syncDataBuffer ??= new Queue<SyncData>();
if (m_syncDataBuffer.Count == 0)
{
m_syncDataBuffer.Enqueue(syncData);
m_lastAddedSnapshot = syncData;
return;
}
if (m_syncDataBuffer.Last().sentNetworkTime >= syncData.sentNetworkTime)
if (m_lastAddedSnapshot.sentNetworkTime >= syncData.sentNetworkTime)
{
// can happen if packets arrive out of order (eg. on UDP transport)
return;
}
m_syncDataBuffer.Enqueue(syncData);
m_lastAddedSnapshot = syncData;
}
public void Update()
@ -243,40 +256,39 @@ namespace SanAndreasUnity.Net
private void UpdateClientUsingSnapshotInterpolation()
{
/*if (SnapshotInterpolation.Compute(
NetworkTime.localTime,
Time.deltaTime,
ref m_clientInterpolationTime,
m_networkBehaviour.syncInterval * 2f,
m_syncDataBuffer,
4,
0.1f,
DoSnapshotInterpolation,
out SyncData computed))
{
this.SetPosition(computed.Position);
this.SetRotation(computed.Rotation);
}*/
if (m_syncDataBuffer.Count == 0)
if (null == m_syncDataBuffer || m_syncDataBuffer.Count == 0)
return;
double currentNetworkTime = NetworkTime.time - m_parameters.snapshotLatency;
SyncData syncDataOfHigher;
SyncData syncDataOfLower;
// find higher and lower snapshots - those are snapshots that surround the 'currentNetworkTime'
int firstHigherIndex = m_syncDataBuffer.FindIndex(_ => _.sentNetworkTime >= currentNetworkTime);
if (firstHigherIndex >= 0)
SyncData syncDataOfHigher = default;
SyncData syncDataOfLower = default;
// note: using foreach with Queue<T> will not allocate memory
bool isFirst = true;
bool foundFirstHigher = false;
foreach (SyncData snapshot in m_syncDataBuffer)
{
syncDataOfHigher = m_syncDataBuffer.ElementAt(firstHigherIndex);
syncDataOfLower = firstHigherIndex > 0 ? m_syncDataBuffer.ElementAt(firstHigherIndex - 1) : syncDataOfHigher;
if (snapshot.sentNetworkTime >= currentNetworkTime)
{
syncDataOfHigher = snapshot;
if (isFirst)
syncDataOfLower = snapshot;
foundFirstHigher = true;
break;
}
isFirst = false;
syncDataOfLower = snapshot;
}
else
if (!foundFirstHigher)
{
// we are ahead of all snapshots
syncDataOfHigher = m_syncDataBuffer.Last();
syncDataOfLower = syncDataOfHigher;
// use the last snapshot for both higher and lower snapshot
syncDataOfHigher = syncDataOfLower;
}
// interpolate between lower and higher syncdata
@ -378,7 +390,7 @@ namespace SanAndreasUnity.Net
m_currentSyncData.CalculatedVelocityMagnitude = float.PositiveInfinity;
m_currentSyncData.CalculatedAngularVelocityMagnitude = float.PositiveInfinity;
m_nextSyncData = null;
m_syncDataBuffer.Clear();
m_syncDataBuffer?.Clear();
}
public void WarpToLatestSyncData()
@ -393,7 +405,7 @@ namespace SanAndreasUnity.Net
m_currentSyncData = syncData;
m_nextSyncData = null;
m_syncDataBuffer.Clear();
m_syncDataBuffer?.Clear();
}
public SyncData GetLatestSyncData()