split into multiple assemblies

Assets/Portal/Runtime/PortalDriverClone.cs

@@ -0,0 +1,44 @@
+using UnityEngine;
+using UnityEngine.InputSystem.XR;
+using UnityEngine.XR.Interaction.Toolkit;
+
+namespace EscapeRoomEngine.Portal.Runtime
+{
+    public class PortalDriverClone : MonoBehaviour
+    {
+        /// <summary>
+        /// The portal where this clone is mirroring the portal driver.
+        /// </summary>
+        [HideInInspector] public Portal portal;
+
+        public static PortalDriverClone Create(PortalDriver portalDriver)
+        {
+            // copy the portal driver object
+            var clone = Instantiate(portalDriver).gameObject;
+            
+            // destroy all unnecessary components
+            Destroy(clone.GetComponent<PortalDriver>());
+            foreach (var xrGrabInteractable in clone.GetComponentsInChildren<XRGrabInteractable>())
+                Destroy(xrGrabInteractable);
+            foreach (var rigidbody in clone.GetComponentsInChildren<Rigidbody>())
+                Destroy(rigidbody);
+            foreach (var trackedPoseDriver in clone.GetComponentsInChildren<TrackedPoseDriver>())
+                Destroy(trackedPoseDriver);
+            
+            // add a clone component
+            clone.AddComponent<PortalDriverClone>();
+            
+            // set up the clone
+            var portalDriverClone = clone.GetComponent<PortalDriverClone>();
+            portalDriverClone.gameObject.SetActive(false);
+            return portalDriverClone;
+        }
+
+        public void UpdatePosition(Transform cloning)
+        {
+            var m = portal.transform.localToWorldMatrix * Portal.HalfRotation *
+                    portal.linkedPortal.transform.worldToLocalMatrix * cloning.localToWorldMatrix;
+            transform.SetPositionAndRotation(m.GetPosition(), m.rotation);
+        }
+    }
+}