Remote-driven car: keep attached parts on unbreakable joints instead of switching them kinematic (that broke the joints and the car fell apart); passenger range measured to the car body

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Passenger.cs

@@ -11,7 +11,7 @@ namespace MSCO
     /// </summary>
     public class Passenger
     {
-        const float EnterRange = 5f;          // so nah muss man am Fahrzeug stehen (Abstand zur Fahrzeugmitte)
+        const float EnterRange = 3f;          // so nah muss man an der Karosserie stehen
         const float CenterSeatThreshold = 0.2f;
         const float BehindCenterSeat = 0.7f;
         const float ExitSideOffset = 1.4f;    // beim Aussteigen so weit neben den Sitz
@@ -44,7 +44,7 @@ namespace MSCO
             float nearest = float.MaxValue;
             foreach (SyncedBody b in driven)
             {
-                float d = (b.Rb.worldCenterOfMass - player.position).sqrMagnitude;
+                float d = DistanceToVehicleSq(b, player.position);
                 nearest = Mathf.Min(nearest, d);
                 PlayerInfo owner;
                 if (!players.TryGetValue(b.OwnerId, out owner) || owner.Avatar == null) continue;
@@ -69,6 +69,22 @@ namespace MSCO
             return "Riding as passenger (press again to get out)";
         }
 
+        /// <summary>
+        /// Abstand zur nächsten Stelle der Karosserie (Collider), nicht zum Schwerpunkt - den legt MSC teils weit weg,
+        /// dann hieß es "26 m entfernt", obwohl man direkt an der Tür stand.
+        /// </summary>
+        static float DistanceToVehicleSq(SyncedBody b, Vector3 point)
+        {
+            float best = (b.Rb.position - point).sqrMagnitude;
+            foreach (Collider c in b.Rb.GetComponentsInChildren<Collider>())
+            {
+                if (c == null || !c.enabled || c.isTrigger) continue;
+                float d = (c.bounds.ClosestPoint(point) - point).sqrMagnitude;
+                if (d < best) best = d;
+            }
+            return best;
+        }
+
         /// <summary>Nach der Physik (LateUpdate): Spieler auf den Sitz setzen und mitdrehen.</summary>
         public void LateUpdate(Transform player, Camera cam, ObjectSync objects)
         {