portal travelling

Assets/Escape Room Engine/Portal/PortalDriver.cs

@@ -0,0 +1,38 @@
+using System;
+using UnityEngine;
+
+namespace Escape_Room_Engine.Portal
+{
+    [RequireComponent(typeof(Collider), typeof(Rigidbody))]
+    public class PortalDriver : MonoBehaviour
+    {
+        /// <summary>
+        /// The object that will be transported through the portal. Usually either this object or a parent offset object.
+        /// </summary>
+        [SerializeField] private Transform traveller;
+
+        /// <summary>
+        /// The side of the portal this became tracked on.
+        /// </summary>
+        [HideInInspector] public int entrySide;
+        
+        /// <summary>
+        /// A reference to the collider of this portal driver.
+        /// </summary>
+        public Collider Collider { get; private set; }
+
+        private void Awake()
+        {
+            // check whether the collider is set up correctly
+            Collider = GetComponent<Collider>();
+            if (Collider.isTrigger) throw new Exception("Collider must not be a trigger.");
+        }
+
+        public void Teleport(Portal from, Portal to)
+        {
+            var m = to.transform.localToWorldMatrix * Portal.HalfRotation * from.transform.worldToLocalMatrix *
+                    traveller.localToWorldMatrix;
+            traveller.transform.SetPositionAndRotation(m.GetPosition(), m.rotation);
+        }
+    }
+}