Series.play_card fix

game.py

@@ -148,7 +148,7 @@ class Series():
             raise BridzikException('Cislo hraca musi byt 0, 1, 2 alebo 3.')
         if self.get_last_round().is_guessing_completed():
             raise BridzikException('Tipovanie ukoncene')
-        if player != self.get_last_round().get_active_player:
+        if player != self.get_last_round().get_active_player():
             raise BridzikException('Hrac nie je na tahu')
         self.get_last_round().add_player_guess(player, guess)