fixing comments

src/Repository/PlaceRepository.php

@@ -31,9 +31,9 @@ class PlaceRepository
     //TODO: use Map and User instead of id
     public function getRandomNPlaces(int $mapId, int $n, ?int $userId): array
     {
-        if(!isset($userId)) { // anonymous single player or multiplayer game
+        if(!isset($userId)) { // anonymous single player
             return $this->getRandomNForMapWithValidPano($mapId, $n);
-        } else { // authorized user
+        } else { // authorized user or multiplayer game with selection based on what the host played before
             $unvisitedPlaces = $this->getRandomUnvisitedNForMapWithValidPano($mapId, $n, $userId);
             $oldPlaces = $this->getRandomOldNForMapWithValidPano($mapId, $n - count($unvisitedPlaces), $userId);
             return array_merge($unvisitedPlaces, $oldPlaces);