Handle authenticated room instance takeover

app/Http/Controllers/RoomController.php

@@ -10,6 +10,7 @@ use App\Models\Player;
 use App\Models\Room;
 use App\Services\Rooms\RoomCreationService;
 use App\Services\Rooms\RoomPageService;
+use App\Services\Rooms\RoomPlayerInstanceService;
 use Illuminate\Http\RedirectResponse;
 use Illuminate\Http\Request;
 use Inertia\Inertia;
@@ -20,6 +21,7 @@ class RoomController extends Controller
     public function __construct(
         private readonly RoomCreationService $roomCreation,
         private readonly RoomPageService $roomPage,
+        private readonly RoomPlayerInstanceService $playerInstances,
     ) {}
 
     public function create(Request $request): Response
@@ -40,6 +42,9 @@ class RoomController extends Controller
             $validated,
             $request->user(),
         );
+        $player->update([
+            'active_instance_id' => $this->playerInstances->for($request),
+        ]);
 
         $request->session()->put(
             "room_players.{$room->id}",