NetworkSerializedObjectStream is now SyncState, added UndoGroup concept that takes any number of SyncState components and can save and reload snapshots, don't create garbage by recreating MemoryStream and Reader/Writer every time

Runtime/NetworkObject.cs

@@ -31,6 +31,7 @@ namespace VelNet
 		/// This way objects can be spawned in a static location
 		/// </summary>
 		internal bool instantiatedWithTransform = false;
+
 		internal Vector3 initialPosition;
 		internal Quaternion initialRotation;
 

Runtime/Util/NetworkSerializedObject.cs

@@ -4,6 +4,7 @@ using UnityEngine;
 
 namespace VelNet
 {
+	[Obsolete("Use SyncState instead.")]
 	public abstract class NetworkSerializedObject : NetworkComponent, IPackState
 	{
 		[Tooltip("Send rate of this object. This caps out at the framerate of the game.")]

Runtime/Util/NetworkSerializedObjectStream.cs

@@ -1,17 +1,20 @@
 using System;
 using System.Collections;
+using System.Collections.Generic;
 using System.IO;
+using System.Linq;
 using UnityEngine;
 
 namespace VelNet
 {
+	[Obsolete("Use SyncState instead")]
 	public abstract class NetworkSerializedObjectStream : NetworkComponent, IPackState
 	{
 		[Tooltip("Send rate of this object. This caps out at the framerate of the game.")]
 		public float serializationRateHz = 30;
 
 		/// <summary>
-		/// If the data hasn't changed, only sends updates across the network at 1Hz
+		/// If the data hasn't changed, only sends updates across the network at 0.5Hz
 		/// </summary>
 		public bool hybridOnChangeCompression = true;
 
@@ -19,7 +22,6 @@ namespace VelNet
 		private double lastSendTime;
 		private const double slowSendInterval = 2;
 
-
 		protected virtual void Awake()
 		{
 			StartCoroutine(SendMessageUpdate());

Runtime/Util/SyncRigidbody.cs

@@ -10,7 +10,7 @@ namespace VelNet
 	/// </summary>
 	[AddComponentMenu("VelNet/VelNet Sync Rigidbody")]
 	[RequireComponent(typeof(Rigidbody))]
-	public class SyncRigidbody : NetworkSerializedObjectStream
+	public class SyncRigidbody : SyncState
 	{
 		public bool useLocalTransform;
 		public float minPosDelta = .01f;

Runtime/Util/SyncState.cs

@@ -0,0 +1,101 @@
+using System;
+using System.Collections;
+using System.IO;
+using UnityEngine;
+
+namespace VelNet
+{
+	public abstract class SyncState : NetworkComponent, IPackState
+	{
+		[Tooltip("Send rate of this object. This caps out at the framerate of the game.")]
+		public float serializationRateHz = 30;
+
+		/// <summary>
+		/// If the data hasn't changed, only sends updates across the network at 0.5Hz
+		/// </summary>
+		public bool hybridOnChangeCompression = true;
+
+		private byte[] lastSentBytes;
+		private double lastSendTime;
+		private const double slowSendInterval = 2;
+
+		private MemoryStream writerMemory;
+		private BinaryWriter writer;
+		private MemoryStream readerMemory;
+		private BinaryReader reader;
+
+		protected virtual void Awake()
+		{
+			writerMemory = new MemoryStream();
+			writer = new BinaryWriter(writerMemory);
+			readerMemory = new MemoryStream();
+			reader = new BinaryReader(readerMemory);
+
+			StartCoroutine(SendMessageUpdate());
+		}
+
+		private IEnumerator SendMessageUpdate()
+		{
+			while (true)
+			{
+				try
+				{
+					if (IsMine && enabled)
+					{
+						byte[] newBytes = PackState();
+
+						if (hybridOnChangeCompression)
+						{
+							if (Time.timeAsDouble - lastSendTime > slowSendInterval ||
+							    !BinaryWriterExtensions.BytesSame(lastSentBytes, newBytes))
+							{
+								SendBytes(newBytes);
+								lastSendTime = Time.timeAsDouble;
+							}
+						}
+						else
+						{
+							SendBytes(newBytes);
+							lastSendTime = Time.timeAsDouble;
+						}
+
+						lastSentBytes = newBytes;
+					}
+				}
+				catch (Exception e)
+				{
+					Debug.LogError(e);
+				}
+
+				yield return new WaitForSeconds(1f / serializationRateHz);
+			}
+			// ReSharper disable once IteratorNeverReturns
+		}
+
+		public override void ReceiveBytes(byte[] message)
+		{
+			UnpackState(message);
+		}
+
+		protected abstract void SendState(BinaryWriter binaryWriter);
+
+		protected abstract void ReceiveState(BinaryReader binaryReader);
+
+		public byte[] PackState()
+		{
+			writerMemory.Position = 0;
+			writerMemory.SetLength(0);
+			SendState(writer);
+			return writerMemory.ToArray();
+		}
+
+		public void UnpackState(byte[] state)
+		{
+			readerMemory.Position = 0;
+			readerMemory.SetLength(0);
+			readerMemory.Write(state, 0, state.Length);
+			readerMemory.Position = 0;
+			ReceiveState(reader);
+		}
+	}
+}

Runtime/Util/SyncState.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 91bac26baa2fadb4d86aa2ff05c94a2a
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Runtime/Util/SyncTransform.cs

@@ -7,7 +7,7 @@ namespace VelNet
 	/// A simple class that will sync the position and rotation of a network object
 	/// </summary>
 	[AddComponentMenu("VelNet/VelNet Sync Transform")]
-	public class SyncTransform : NetworkSerializedObjectStream
+	public class SyncTransform : SyncState
 	{
 		[Space] public bool position = true;
 		public bool rotation = true;

Runtime/Util/UndoGroup.cs

@@ -0,0 +1,105 @@
+using System.Collections.Generic;
+using System.Linq;
+using UnityEngine;
+
+#if UNITY_EDITOR
+using UnityEditor;
+#endif
+
+namespace VelNet
+{
+	public class UndoGroup : MonoBehaviour
+	{
+		/// <summary>
+		/// This cannot be changed at runtime.
+		/// </summary>
+		public List<SyncState> objects;
+
+		private readonly List<byte[][]> undoBuffer = new List<byte[][]>();
+		public int maxUndoSteps = 50;
+
+
+		/// <summary>
+		/// Reset to the last UndoState. This only takes ownership if the IPackState component is also a NetworkComponent
+		/// </summary>
+		public void Undo()
+		{
+			byte[][] lastStates = undoBuffer.LastOrDefault();
+			if (lastStates != null)
+			{
+				for (int i = 0; i < objects.Count; i++)
+				{
+					objects[i].networkObject.TakeOwnership();
+					objects[i].UnpackState(lastStates[i]);
+				}
+			}
+		}
+
+		public void SaveUndoState()
+		{
+			byte[][] states = new byte[objects.Count][];
+			for (int i = 0; i < objects.Count; i++)
+			{
+				states[i] = objects[i].PackState();
+			}
+
+			undoBuffer.Add(states);
+
+			while (undoBuffer.Count > maxUndoSteps)
+			{
+				undoBuffer.RemoveAt(0);
+			}
+		}
+
+		public int UndoHistoryLength()
+		{
+			return undoBuffer.Count;
+		}
+	}
+	
+#if UNITY_EDITOR
+	[CustomEditor(typeof(UndoGroup))]
+	public class UndoGroupEditor : Editor
+	{
+		public override void OnInspectorGUI()
+		{
+			UndoGroup t = target as UndoGroup;
+
+			EditorGUILayout.Space();
+
+			if (t == null) return;
+
+			EditorGUILayout.HelpBox("Undo Group. Use SaveUndoState() to make checkpoints.", MessageType.Info);
+
+			EditorGUI.BeginDisabledGroup(true);
+			EditorGUILayout.TextField("Undo Length: ", t.UndoHistoryLength().ToString("N0"));
+			EditorGUI.EndDisabledGroup();
+			EditorGUILayout.Space();
+
+			if (EditorApplication.isPlaying && GUILayout.Button("Save undo checkpoint now."))
+			{
+				t.SaveUndoState();
+			}
+
+			if (GUILayout.Button("Find all undoable components in children."))
+			{
+				SyncState[] components = t.GetComponentsInChildren<SyncState>();
+				SerializedObject so = new SerializedObject(t);
+				SerializedProperty prop = so.FindProperty("objects");
+				prop.ClearArray();
+				foreach (SyncState comp in components)
+				{
+					prop.InsertArrayElementAtIndex(0);
+					prop.GetArrayElementAtIndex(0).objectReferenceValue = comp;
+				}
+
+				so.ApplyModifiedProperties();
+			}
+
+			EditorGUILayout.Space();
+
+			DrawDefaultInspector();
+		}
+	}
+#endif
+}

Runtime/Util/UndoGroup.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 3ab6cea605a37144a87766745c28fcc4
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 

Samples/DissonanceExample/Scripts/PlayerController.cs

@@ -6,7 +6,7 @@ using Random = UnityEngine.Random;
 
 namespace VelNet
 {
-	public class PlayerController : NetworkSerializedObjectStream
+	public class PlayerController : SyncState
 	{
 		private Renderer rend;
 		public Color color;

Samples/DissonanceExample/Scripts/SyncedTextbox.cs

@@ -2,7 +2,7 @@ using System.IO;
 using UnityEngine.UI;
 using VelNet;
 
-public class SyncedTextbox : NetworkSerializedObjectStream
+public class SyncedTextbox : SyncState
 {
 	public InputField text;
 

Samples/FullExample/Prefabs/PlayerPrefab.prefab

@@ -92,9 +92,17 @@ BoxCollider:
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 857495161650682534}
   m_Material: {fileID: 0}
-  m_IsTrigger: 0
+  m_IncludeLayers:
-  m_Enabled: 1
     serializedVersion: 2
+    m_Bits: 0
+  m_ExcludeLayers:
+    serializedVersion: 2
+    m_Bits: 0
+  m_LayerOverridePriority: 0
+  m_IsTrigger: 0
+  m_ProvidesContacts: 0
+  m_Enabled: 1
+  serializedVersion: 3
   m_Size: {x: 1, y: 1, z: 1}
   m_Center: {x: 0, y: 0, z: 0}
 --- !u!1 &2597866068570990601
@@ -189,9 +197,17 @@ BoxCollider:
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 2597866068570990601}
   m_Material: {fileID: 0}
-  m_IsTrigger: 0
+  m_IncludeLayers:
-  m_Enabled: 1
     serializedVersion: 2
+    m_Bits: 0
+  m_ExcludeLayers:
+    serializedVersion: 2
+    m_Bits: 0
+  m_LayerOverridePriority: 0
+  m_IsTrigger: 0
+  m_ProvidesContacts: 0
+  m_Enabled: 1
+  serializedVersion: 3
   m_Size: {x: 1, y: 1, z: 1}
   m_Center: {x: 0, y: 0, z: 0}
 --- !u!1 &6139051692386484099
@@ -294,9 +310,17 @@ BoxCollider:
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 6139051692386484099}
   m_Material: {fileID: 0}
-  m_IsTrigger: 0
+  m_IncludeLayers:
-  m_Enabled: 1
     serializedVersion: 2
+    m_Bits: 0
+  m_ExcludeLayers:
+    serializedVersion: 2
+    m_Bits: 0
+  m_LayerOverridePriority: 0
+  m_IsTrigger: 0
+  m_ProvidesContacts: 0
+  m_Enabled: 1
+  serializedVersion: 3
   m_Size: {x: 1, y: 1, z: 1}
   m_Center: {x: 0, y: 0, z: 0}
 --- !u!114 &9102273340480352682
@@ -357,6 +381,7 @@ MonoBehaviour:
   serializationRateHz: 30
   hybridOnChangeCompression: 1
   color: {r: 0, g: 0, b: 0, a: 0}
+  spawnableObj: {fileID: 419466048389313174, guid: c0c7ee35b5be203468523c819c9da422, type: 3}
 --- !u!114 &1674689795532972108
 MonoBehaviour:
   m_ObjectHideFlags: 0
@@ -562,8 +587,16 @@ BoxCollider:
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 7360746642267561319}
   m_Material: {fileID: 0}
-  m_IsTrigger: 0
+  m_IncludeLayers:
-  m_Enabled: 1
     serializedVersion: 2
+    m_Bits: 0
+  m_ExcludeLayers:
+    serializedVersion: 2
+    m_Bits: 0
+  m_LayerOverridePriority: 0
+  m_IsTrigger: 0
+  m_ProvidesContacts: 0
+  m_Enabled: 1
+  serializedVersion: 3
   m_Size: {x: 1, y: 1, z: 1}
   m_Center: {x: 0, y: 0, z: 0}

Samples/FullExample/Scenes/FullExample.unity

@@ -104,7 +104,7 @@ NavMeshSettings:
   serializedVersion: 2
   m_ObjectHideFlags: 0
   m_BuildSettings:
-    serializedVersion: 2
+    serializedVersion: 3
     agentTypeID: 0
     agentRadius: 0.5
     agentHeight: 2
@@ -117,7 +117,7 @@ NavMeshSettings:
     cellSize: 0.16666667
     manualTileSize: 0
     tileSize: 256
-    accuratePlacement: 0
+    buildHeightMesh: 0
     maxJobWorkers: 0
     preserveTilesOutsideBounds: 0
     debug:
@@ -585,7 +585,9 @@ Canvas:
   m_OverrideSorting: 0
   m_OverridePixelPerfect: 0
   m_SortingBucketNormalizedSize: 0
+  m_VertexColorAlwaysGammaSpace: 0
   m_AdditionalShaderChannelsFlag: 0
+  m_UpdateRectTransformForStandalone: 0
   m_SortingLayerID: 0
   m_SortingOrder: 0
   m_TargetDisplay: 0
@@ -1727,9 +1729,17 @@ Camera:
   m_projectionMatrixMode: 1
   m_GateFitMode: 2
   m_FOVAxisMode: 0
+  m_Iso: 200
+  m_ShutterSpeed: 0.005
+  m_Aperture: 16
+  m_FocusDistance: 10
+  m_FocalLength: 50
+  m_BladeCount: 5
+  m_Curvature: {x: 2, y: 11}
+  m_BarrelClipping: 0.25
+  m_Anamorphism: 0
   m_SensorSize: {x: 36, y: 24}
   m_LensShift: {x: 0, y: 0}
-  m_FocalLength: 50
   m_NormalizedViewPortRect:
     serializedVersion: 2
     x: 0
@@ -2589,7 +2599,7 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 233344de094f11341bdb834d564708dc, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
-  host: vn.ugavel.com
+  host: velnet-demo.ugavel.com
   port: 5000
   udpConnected: 0
   userid: -1

Samples/FullExample/Scripts/PlayerController.cs

@@ -6,7 +6,7 @@ using Random = UnityEngine.Random;
 
 namespace VelNet
 {
-	public class PlayerController : NetworkSerializedObjectStream
+	public class PlayerController : SyncState
 	{
 		private Renderer rend;
 		public Color color;

Samples/FullExample/Scripts/SyncedCustomObj.cs

@@ -4,7 +4,7 @@ using System.IO;
 using UnityEngine;
 using VelNet;
 
-public class SyncedCustomObj : NetworkSerializedObjectStream
+public class SyncedCustomObj : SyncState
 {
 	private Renderer rend;
 	private Rigidbody rb;

Samples/FullExample/Scripts/SyncedTextbox.cs

@@ -2,7 +2,7 @@ using System.IO;
 using UnityEngine.UI;
 using VelNet;
 
-public class SyncedTextbox : NetworkSerializedObjectStream
+public class SyncedTextbox : SyncState
 {
 	public InputField text;
 

package.json

@@ -1,7 +1,7 @@
 {
 	"name": "edu.uga.engr.vel.velnet",
 	"displayName": "VelNet",
-	"version": "1.1.9",
+	"version": "1.2.0",
 	"unity": "2019.1",
 	"description": "A custom networking library for Unity.",
 	"keywords": [