working spectator window, but following instead of same as main but stabilised

AVVR/Assets/Prefabs/Complete XR Origin Set Up Variant AVVR.prefab

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AVVR/Assets/_Scripts/DisplayManager.cs

+using UnityEngine;
+using UnityEngine.XR;
+using System.Linq;
+
+public class DisplayManager : MonoBehaviour
+{
+    [Header("Camera References")]
+    [SerializeField] private Camera xrCamera;
+    [SerializeField] private Camera spectatorCamera;
+    
+    [Header("Display Settings")]
+    [SerializeField] private bool useSecondaryWindow = false;
+    [SerializeField] private Vector2Int windowSize = new Vector2Int(1920, 1080);
+    [SerializeField] private bool windowedMode = true;
+    
+    private void Start()
+    {
+        if (xrCamera == null || spectatorCamera == null)
+        {
+            Debug.LogError("Camera references not set in Display Manager!");
+            return;
+        }
+
+        SetupDisplays();
+    }
+
+    private void SetupDisplays()
+    {
+        // Configure XR Camera
+        xrCamera.targetDisplay = 0; // VR Display
+        
+        if (useSecondaryWindow)
+        {
+            CreateSecondaryWindow();
+        }
+        else
+        {
+            // Use main display for spectator view
+            spectatorCamera.targetDisplay = 0;
+            xrCamera.depth = 0;
+            spectatorCamera.depth = 1; // Ensure spectator camera renders over XR camera on desktop
+        }
+
+        // Set up spectator camera to not render to the VR display
+        spectatorCamera.stereoTargetEye = StereoTargetEyeMask.None;
+    }
+
+    private void CreateSecondaryWindow()
+    {
+#if UNITY_STANDALONE_WIN || UNITY_EDITOR
+        // Create a secondary window
+        if (!UnityEngine.Display.displays.Any(d => d.active && d != UnityEngine.Display.main))
+        {
+            if (UnityEngine.Display.displays.Length > 1)
+            {
+                UnityEngine.Display.displays[1].Activate();
+                spectatorCamera.targetDisplay = 1;
+            }
+        }
+#endif
+    }
+
+#if UNITY_EDITOR
+    [UnityEditor.MenuItem("Window/Create Game View 2")]
+    public static void CreateSecondGameView()
+    {
+        var assembly = typeof(UnityEditor.EditorWindow).Assembly;
+        var gameViewType = assembly.GetType("UnityEditor.GameView");
+        var gameView = UnityEditor.EditorWindow.GetWindow(gameViewType, false, "Game (Spectator)", true);
+        gameView.Show();
+    }
+#endif
+}
\ No newline at end of file

AVVR/Assets/_Scripts/DisplayManager.cs.meta

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AVVR/Assets/_Scripts/SpectatorCamera.cs

+using UnityEngine;
+using UnityEngine.XR;
+
+[RequireComponent(typeof(Camera))]
+public class SpectatorCamera : MonoBehaviour
+{
+    [Header("Target Settings")]
+    [SerializeField] private Transform xrOrigin;
+    [SerializeField] private Transform xrCamera;
+    [SerializeField] private Vector3 positionOffset = new Vector3(0f, 0.5f, -1f);
+    [SerializeField] private Vector3 rotationOffset;
+
+    [Header("Smoothing")]
+    [SerializeField] private float positionSmoothTime = 0.15f;
+    [SerializeField] private float rotationSmoothTime = 0.15f;
+    [SerializeField] private bool smoothRotation = true;
+    [SerializeField] private bool smoothPosition = true;
+
+    [Header("Damping")]
+    [Range(0f, 1f)]
+    [SerializeField] private float positionDamping = 0.5f;
+    [Range(0f, 1f)]
+    [SerializeField] private float rotationDamping = 0.5f;
+
+    // Internal tracking variables
+    private Vector3 currentVelocity;
+    private Vector3 currentAngularVelocity;
+    private Vector3 targetPosition;
+    private Quaternion targetRotation;
+
+    private void Start()
+    {
+        if (xrOrigin == null || xrCamera == null)
+        {
+            Debug.LogError("XR Origin or Camera reference not set in Spectator Camera!");
+            enabled = false;
+            return;
+        }
+
+        // Initialize position and rotation
+        transform.position = xrCamera.position + xrCamera.TransformDirection(positionOffset);
+        transform.rotation = xrCamera.rotation * Quaternion.Euler(rotationOffset);
+    }
+
+    private void LateUpdate()
+    {
+        UpdateTargetTransform();
+        SmoothlyFollowTarget();
+    }
+
+    private void UpdateTargetTransform()
+    {
+        // Calculate target position with offset
+        targetPosition = xrCamera.position + xrCamera.TransformDirection(positionOffset);
+
+        // Calculate target rotation with offset
+        targetRotation = xrCamera.rotation * Quaternion.Euler(rotationOffset);
+    }
+
+    private void SmoothlyFollowTarget()
+    {
+        if (smoothPosition)
+        {
+            // Smooth position following
+            transform.position = Vector3.SmoothDamp(
+                transform.position,
+                targetPosition,
+                ref currentVelocity,
+                positionSmoothTime,
+                Mathf.Infinity,
+                Time.deltaTime
+            );
+        }
+        else
+        {
+            transform.position = targetPosition;
+        }
+
+        if (smoothRotation)
+        {
+            // Smooth rotation following
+            transform.rotation = SmoothDampQuaternion(
+                transform.rotation,
+                targetRotation,
+                ref currentAngularVelocity,
+                rotationSmoothTime
+            );
+        }
+        else
+        {
+            transform.rotation = targetRotation;
+        }
+    }
+
+    // Custom quaternion smooth damp function
+    private Quaternion SmoothDampQuaternion(Quaternion current, Quaternion target, ref Vector3 currentVelocity, float smoothTime)
+    {
+        Vector3 currentEuler = current.eulerAngles;
+        Vector3 targetEuler = target.eulerAngles;
+
+        // Ensure we rotate the shortest path
+        float deltaX = Mathf.DeltaAngle(currentEuler.x, targetEuler.x);
+        float deltaY = Mathf.DeltaAngle(currentEuler.y, targetEuler.y);
+        float deltaZ = Mathf.DeltaAngle(currentEuler.z, targetEuler.z);
+
+        Vector3 targetAngles = currentEuler + new Vector3(deltaX, deltaY, deltaZ);
+
+        Vector3 smoothedEuler = Vector3.SmoothDamp(
+            currentEuler,
+            targetAngles,
+            ref currentVelocity,
+            smoothTime,
+            Mathf.Infinity,
+            Time.deltaTime
+        );
+
+        return Quaternion.Euler(smoothedEuler);
+    }
+
+    // Editor gizmos for visualization
+    private void OnDrawGizmosSelected()
+    {
+        if (xrCamera != null)
+        {
+            Gizmos.color = Color.green;
+            Gizmos.DrawWireSphere(xrCamera.position + xrCamera.TransformDirection(positionOffset), 0.1f);
+            Gizmos.DrawLine(xrCamera.position, xrCamera.position + xrCamera.TransformDirection(positionOffset));
+        }
+    }
+}
\ No newline at end of file

AVVR/Assets/_Scripts/SpectatorCamera.cs.meta

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AVVR/Assets/_Scripts/SpectatorWindow.cs

+using UnityEngine;
+
+public class SpectatorWindow : MonoBehaviour
+{
+    private static SpectatorWindow instance;
+    private Camera spectatorCam;
+    private RenderTexture renderTexture;
+    private bool showWindow = true;
+    private Rect windowRect = new Rect(100, 100, 800, 450);
+
+    [SerializeField] private bool enableWindowDrag = true;
+    [SerializeField] private Vector2Int renderResolution = new Vector2Int(1920, 1080);
+
+    private void Awake()
+    {
+        if (instance == null)
+        {
+            instance = this;
+            DontDestroyOnLoad(gameObject);
+        }
+        else
+        {
+            Destroy(gameObject);
+            return;
+        }
+
+        spectatorCam = GetComponent<Camera>();
+        if (spectatorCam == null)
+        {
+            Debug.LogError("No camera attached to SpectatorWindow!");
+            return;
+        }
+
+        InitializeRenderTexture();
+    }
+
+    private void InitializeRenderTexture()
+    {
+        renderTexture = new RenderTexture(renderResolution.x, renderResolution.y, 24);
+        renderTexture.antiAliasing = 4;
+        spectatorCam.targetTexture = renderTexture;
+    }
+
+    private void OnGUI()
+    {
+        if (!showWindow) return;
+
+        // Draw the window
+        windowRect = enableWindowDrag ? 
+            GUI.Window(0, windowRect, DrawWindowContents, "Spectator View") :
+            GUI.Window(0, windowRect, DrawWindowContents, "");
+    }
+
+    private void DrawWindowContents(int windowID)
+    {
+        // Draw the render texture
+        GUI.DrawTexture(new Rect(0, 20, windowRect.width, windowRect.height - 20), renderTexture);
+
+        // Allow window dragging
+        if (enableWindowDrag)
+        {
+            GUI.DragWindow();
+        }
+
+        // Add a close button
+        if (GUI.Button(new Rect(windowRect.width - 25, 2, 20, 16), "X"))
+        {
+            showWindow = false;
+        }
+    }
+
+    private void OnDestroy()
+    {
+        if (renderTexture != null)
+        {
+            renderTexture.Release();
+            Destroy(renderTexture);
+        }
+    }
+
+    // Public methods to control the window
+    public void ShowWindow() => showWindow = true;
+    public void HideWindow() => showWindow = false;
+    public void ToggleWindow() => showWindow = !showWindow;
+    
+    // Method to change window size
+    public void SetWindowSize(float width, float height)
+    {
+        windowRect.width = width;
+        windowRect.height = height;
+    }
+}
\ No newline at end of file

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