Using hooks to update SyncVars on clients

Also testing with syncing transforms, but this does not work.

Assets/Prefabs/Player.prefab

@@ -105,6 +105,177 @@ SphereCollider:
   serializedVersion: 3
   m_Radius: 0.5
   m_Center: {x: 0, y: 0, z: 0}
+--- !u!1 &7780652467164841009
+GameObject:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  serializedVersion: 6
+  m_Component:
+  - component: {fileID: 1787881738138586436}
+  - component: {fileID: 7357750765590739624}
+  - component: {fileID: 9109353986266369291}
+  m_Layer: 0
+  m_Name: Name
+  m_TagString: Untagged
+  m_Icon: {fileID: 0}
+  m_NavMeshLayer: 0
+  m_StaticEditorFlags: 0
+  m_IsActive: 1
+--- !u!224 &1787881738138586436
+RectTransform:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 7780652467164841009}
+  m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
+  m_LocalPosition: {x: 0, y: 0, z: 0}
+  m_LocalScale: {x: 1, y: 1, z: 1}
+  m_ConstrainProportionsScale: 0
+  m_Children: []
+  m_Father: {fileID: 6498975337014063786}
+  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
+  m_AnchorMin: {x: 0.5, y: 0.5}
+  m_AnchorMax: {x: 0.5, y: 0.5}
+  m_AnchoredPosition: {x: 0, y: 1.5}
+  m_SizeDelta: {x: 5.75, y: 1.6}
+  m_Pivot: {x: 0.5, y: 0.5}
+--- !u!23 &7357750765590739624
+MeshRenderer:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 7780652467164841009}
+  m_Enabled: 1
+  m_CastShadows: 0
+  m_ReceiveShadows: 0
+  m_DynamicOccludee: 1
+  m_StaticShadowCaster: 0
+  m_MotionVectors: 1
+  m_LightProbeUsage: 1
+  m_ReflectionProbeUsage: 1
+  m_RayTracingMode: 2
+  m_RayTraceProcedural: 0
+  m_RenderingLayerMask: 1
+  m_RendererPriority: 0
+  m_Materials:
+  - {fileID: 2180264, guid: 8f586378b4e144a9851e7b34d9b748ee, type: 2}
+  m_StaticBatchInfo:
+    firstSubMesh: 0
+    subMeshCount: 0
+  m_StaticBatchRoot: {fileID: 0}
+  m_ProbeAnchor: {fileID: 0}
+  m_LightProbeVolumeOverride: {fileID: 0}
+  m_ScaleInLightmap: 1
+  m_ReceiveGI: 1
+  m_PreserveUVs: 0
+  m_IgnoreNormalsForChartDetection: 0
+  m_ImportantGI: 0
+  m_StitchLightmapSeams: 1
+  m_SelectedEditorRenderState: 3
+  m_MinimumChartSize: 4
+  m_AutoUVMaxDistance: 0.5
+  m_AutoUVMaxAngle: 89
+  m_LightmapParameters: {fileID: 0}
+  m_SortingLayerID: 0
+  m_SortingLayer: 0
+  m_SortingOrder: 0
+  m_AdditionalVertexStreams: {fileID: 0}
+--- !u!114 &9109353986266369291
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 7780652467164841009}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 9541d86e2fd84c1d9990edf0852d74ab, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  m_Material: {fileID: 0}
+  m_Color: {r: 1, g: 1, b: 1, a: 1}
+  m_RaycastTarget: 1
+  m_RaycastPadding: {x: 0, y: 0, z: 0, w: 0}
+  m_Maskable: 1
+  m_OnCullStateChanged:
+    m_PersistentCalls:
+      m_Calls: []
+  m_text: Sample text
+  m_isRightToLeft: 0
+  m_fontAsset: {fileID: 11400000, guid: 8f586378b4e144a9851e7b34d9b748ee, type: 2}
+  m_sharedMaterial: {fileID: 2180264, guid: 8f586378b4e144a9851e7b34d9b748ee, type: 2}
+  m_fontSharedMaterials: []
+  m_fontMaterial: {fileID: 0}
+  m_fontMaterials: []
+  m_fontColor32:
+    serializedVersion: 2
+    rgba: 4278648576
+  m_fontColor: {r: 0, g: 1, b: 0.02520442, a: 1}
+  m_enableVertexGradient: 0
+  m_colorMode: 3
+  m_fontColorGradient:
+    topLeft: {r: 1, g: 1, b: 1, a: 1}
+    topRight: {r: 1, g: 1, b: 1, a: 1}
+    bottomLeft: {r: 1, g: 1, b: 1, a: 1}
+    bottomRight: {r: 1, g: 1, b: 1, a: 1}
+  m_fontColorGradientPreset: {fileID: 0}
+  m_spriteAsset: {fileID: 0}
+  m_tintAllSprites: 0
+  m_StyleSheet: {fileID: 0}
+  m_TextStyleHashCode: -1183493901
+  m_overrideHtmlColors: 0
+  m_faceColor:
+    serializedVersion: 2
+    rgba: 4294967295
+  m_fontSize: 9.6
+  m_fontSizeBase: 9.6
+  m_fontWeight: 400
+  m_enableAutoSizing: 0
+  m_fontSizeMin: 18
+  m_fontSizeMax: 72
+  m_fontStyle: 0
+  m_HorizontalAlignment: 2
+  m_VerticalAlignment: 512
+  m_textAlignment: 65535
+  m_characterSpacing: 0
+  m_wordSpacing: 0
+  m_lineSpacing: 0
+  m_lineSpacingMax: 0
+  m_paragraphSpacing: 0
+  m_charWidthMaxAdj: 0
+  m_enableWordWrapping: 1
+  m_wordWrappingRatios: 0.4
+  m_overflowMode: 0
+  m_linkedTextComponent: {fileID: 0}
+  parentLinkedComponent: {fileID: 0}
+  m_enableKerning: 1
+  m_enableExtraPadding: 0
+  checkPaddingRequired: 0
+  m_isRichText: 1
+  m_parseCtrlCharacters: 1
+  m_isOrthographic: 0
+  m_isCullingEnabled: 0
+  m_horizontalMapping: 0
+  m_verticalMapping: 0
+  m_uvLineOffset: 0
+  m_geometrySortingOrder: 0
+  m_IsTextObjectScaleStatic: 0
+  m_VertexBufferAutoSizeReduction: 0
+  m_useMaxVisibleDescender: 1
+  m_pageToDisplay: 1
+  m_margin: {x: 0, y: 0, z: 0, w: 0}
+  m_isUsingLegacyAnimationComponent: 0
+  m_isVolumetricText: 0
+  _SortingLayer: 0
+  _SortingLayerID: 0
+  _SortingOrder: 0
+  m_hasFontAssetChanged: 0
+  m_renderer: {fileID: 7357750765590739624}
+  m_maskType: 0
 --- !u!1 &9197140212603367960
 GameObject:
   m_ObjectHideFlags: 0
@@ -137,6 +308,7 @@ Transform:
   m_ConstrainProportionsScale: 0
   m_Children:
   - {fileID: 6295871783346397600}
+  - {fileID: 1787881738138586436}
   m_Father: {fileID: 0}
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
 --- !u!114 &2811985185363063978
@@ -170,4 +342,8 @@ MonoBehaviour:
   m_EditorClassIdentifier: 
   syncDirection: 0
   syncMode: 0
-  syncInterval: 0
+  syncInterval: 0.1
+  _playerNameObject: {fileID: 9109353986266369291}
+  _displayName: Missing Name
+  _playerColor: {r: 0, g: 0, b: 0, a: 1}
+  _transform: {fileID: 0}

Assets/Scripts/MyNetworkManager.cs

@@ -9,6 +9,8 @@ public class MyNetworkManager : NetworkManager
 
         MyNetworkPlayer player = conn.identity.GetComponent<MyNetworkPlayer>();
         player.SetDisplayName($"Player {numPlayers.ToString()}");
-        player.SetPlayerColor(new(Random.value, Random.value , Random.value ));
+        player.SetPlayerColor(GetRandomColor());
     }
+
+    private static Color GetRandomColor() => new(Random.value, Random.value, Random.value);
 }

Assets/Scripts/MyNetworkPlayer.cs

@@ -1,18 +1,75 @@
+using System;
 using Mirror;
+using TMPro;
 using UnityEngine;
 
 public class MyNetworkPlayer : NetworkBehaviour
 {
-    [SyncVar] [SerializeField] private string _displayName = "Missing Name";
+    [Header("Connections")]
-    [SyncVar] [SerializeField] private Color _playerColor = Color.black;
+    [SerializeField] private TMP_Text _playerNameObject;
+    [Header("Variables")]
+    [SyncVar(hook = nameof(SetPlayerNameTagText))]
+    [SerializeField]
+    private string _displayName = "Missing Name";
 
+    [SyncVar(hook = nameof(SetPlayerNameTagColor))]
+    [SerializeField]
+    private Color _playerColor = Color.black;
+
+    [SyncVar(hook = nameof(UpdateTransform))]
+    [SerializeField]
+    private Transform _transform;
+
+    [Server]
     public void SetDisplayName(string newDisplayName)
     {
         _displayName = newDisplayName;
     }
 
+    [Server]
     public void SetPlayerColor(Color newPlayerColor)
     {
         _playerColor = newPlayerColor;
     }
+
+    private void SetPlayerNameTagText(string oldText, string newText)
+    {
+        if (_playerNameObject != null)
+        {
+            _playerNameObject.text = newText;
+        }
+    }
+
+    private void SetPlayerNameTagColor(Color oldColor, Color newColor)
+    {
+        if (_playerNameObject != null)
+        {
+            _playerNameObject.color = newColor;
+        }
+    }
+
+    private void OnConnectedToServer()
+    {
+        BindTransform();
+    }
+
+    [Server]
+    private void BindTransform()
+    {
+        _transform = transform;
+    }
+
+    [Server]
+    private void UpdateTransform(Transform oldValue, Transform newValue)
+    {
+        var cachedTransform = transform;
+        cachedTransform.position = newValue.position;
+        cachedTransform.rotation = newValue.rotation;
+    }
+
+    [Client]
+    private void Update()
+    {
+        _transform = transform;
+    }
 }

Assets/Scripts/MyNetworkPlayer1.cs

@@ -0,0 +1,11 @@
+using Mirror;
+using UnityEngine;
+
+public class MyNetworkPlayer1 : NetworkBehaviour
+{
+    [SyncVar]
+    [SerializeField]
+    private Transform _transform;
+
+
+}

Assets/Scripts/MyNetworkPlayer1.cs.meta

@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 200a2e870f62694458ff9e42c9fa7ff5
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: