First try

Assets/_Scripts/Utility/GameStarter.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.SceneManagement;
+
+public class GameStarter : MonoBehaviour
+{
+    [SerializeField] int startScene = 1;
+    private int currentscene;
+    private int nextscene;
+
+    private void OnEnable()
+    {
+        StopRecordingTrigger.OnRecordStop += HandleRecordStop;
+    }
+
+    private void OnDisable()
+    {
+        StopRecordingTrigger.OnRecordStop -= HandleRecordStop;
+    }
+
+    private void Awake()
+    {
+        DontDestroyOnLoad(this);
+        currentscene = startScene;
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+        if (OVRInput.GetDown(OVRInput.Button.SecondaryIndexTrigger))
+        {
+            if (SceneManager.GetActiveScene() != SceneManager.GetSceneByBuildIndex(startScene)) return;
+            nextscene = currentscene + 1;
+            currentscene = nextscene;
+            StartGameByLoadingScene(nextscene);
+        }
+    }
+
+    void StartGameByLoadingScene(int sceneIndex)
+    {
+        SceneManager.LoadScene(sceneIndex);
+    }
+
+    private void HandleRecordStop()
+    {
+        StartGameByLoadingScene(startScene);
+    }
+}

Assets/_Scripts/Utility/GameStarter.cs.meta

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+fileFormatVersion: 2
+guid: e580ea451ce98a24b81fd7e238ac6393

Assets/_Scripts/Utility/SpawnAtLongestEdge.cs

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+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.XR;
+
+public class SpawnAtLongestEdge : MonoBehaviour
+{
+
+    [SerializeField] GameObject roomPrefab;
+    [SerializeField] GameObject pointPrefab;
+    [SerializeField] GameObject reticlePrefab;
+    // Start is called before the first frame update
+    void Start()
+    {
+        // Prüfe, ob die Boundary aktiviert ist
+        if (OVRManager.boundary != null)
+        {
+            // Hole die Boundary-Geometrie (Play Area)
+            Vector3[] boundaryPoints = OVRManager.boundary.GetGeometry(OVRBoundary.BoundaryType.PlayArea);
+
+            if (boundaryPoints != null && boundaryPoints.Length > 0)
+            {
+                Debug.Log("Boundary Points gefunden: " + boundaryPoints.Length);
+                AlignObjectToLongestEdge(boundaryPoints);
+            }
+            else
+            {
+                Debug.LogWarning("Keine Boundary Points gefunden.");
+            }
+        }
+        else
+        {
+            Debug.LogError("OVRManager.boundary ist nicht aktiviert.");
+        }
+    }
+
+    void AlignObjectToLongestEdge(Vector3[] boundaryPoints)
+    {
+        float maxLength = 0f;
+        Vector3 longestEdgeStart = Vector3.zero;
+        Vector3 longestEdgeEnd = Vector3.zero;
+
+        // Iteriere über die Punkte und finde die längste Kante
+        for (int i = 0; i < boundaryPoints.Length; i++)
+        {
+            Vector3 start = boundaryPoints[i];
+            Vector3 end = boundaryPoints[(i + 1) % boundaryPoints.Length]; // Modulo für den letzten Punkt
+            
+            // Debug Visuals for Points
+            Instantiate(pointPrefab, start, Quaternion.LookRotation(end));
+
+            float length = Vector3.Distance(start, end);
+            if (length > maxLength)
+            {
+                maxLength = length;
+                longestEdgeStart = start;
+                longestEdgeEnd = end;
+            }
+        }
+
+        Debug.Log($"Längste Kante gefunden: Start({longestEdgeStart}), Ende({longestEdgeEnd}), Länge: {maxLength}");
+
+        // Richte dein Objekt aus
+        Vector3 midPoint = (longestEdgeStart + longestEdgeEnd) / 2;
+        Vector3 direction = (longestEdgeEnd - longestEdgeStart).normalized;
+
+        Instantiate(roomPrefab, midPoint, Quaternion.LookRotation(direction));
+        Transform reticle = Instantiate(reticlePrefab, longestEdgeStart, Quaternion.LookRotation(direction)).transform;
+        reticle.position = new Vector3 (reticle.position.x - 0.75f, reticle.position.y, reticle.position.z + 1);
+
+        // Beispiel: Objekt positionieren und ausrichten
+        //Transform objTransform = this.transform;
+        //objTransform.position = midPoint;
+        //objTransform.rotation = Quaternion.LookRotation(direction);
+
+        Debug.Log("Objekt wurde an der längsten Kante ausgerichtet.");
+    }
+}

Assets/_Scripts/Utility/SpawnAtLongestEdge.cs.meta

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+fileFormatVersion: 2
+guid: 78d0b4c770471684b819e3235a0688bf

Assets/_Scripts/Utility/StopRecordingTrigger.cs

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+using System.Collections.Generic;
+using System;
+using UnityEngine;
+
+public class StopRecordingTrigger : MonoBehaviour
+{
+    public string tagFilter = "Player";
+    public static event Action OnRecordStop;
+    // Start is called once before the first execution of Update after the MonoBehaviour is created
+
+    private void OnTriggerEnter(Collider other)
+    {
+        if (!string.IsNullOrEmpty(tagFilter) && !other.gameObject.CompareTag(tagFilter)) return;
+        OnRecordStop.Invoke();
+    }
+}

Assets/_Scripts/Utility/StopRecordingTrigger.cs.meta

@@ -0,0 +1,2 @@
+fileFormatVersion: 2
+guid: edf374aa5a0a0cb4f9a7b1e7d4426155