How to use

isTopCardRevealed

method

in

mage.players.Player

  @Override
  public List<Mana> getNetMana(Game game, Ability source) {
    Player controller = game.getPlayer(source.getControllerId());
    if (controller != null) {
      if (controller.isTopCardRevealed()) {
        Card card = controller.getLibrary().getFromTop(game);
        if (card != null) {
          List<Mana> netMana = card.getManaCost().getManaOptions();
          for (Mana mana : netMana) {
            mana.setColorless(0);
            mana.setGeneric(0);
          }
          return netMana;
        }
      }
    }
    return null;
  }
}

@Override
public boolean apply(Game game, Ability source) {
  Player controller = game.getPlayer(source.getControllerId());
  if (controller == null) {
    return false;
  }
  // take cards from library and look at them
  boolean topCardRevealed = controller.isTopCardRevealed();
  controller.setTopCardRevealed(false);
  Cards cards = new CardsImpl(controller.getLibrary().getTopCards(game, this.numberOfCards.calculate(game, source, this)));
  controller.lookAtCards(source, null, cards, game);
  this.actionWithSelectedCards(cards, game, source);
  this.putCardsBack(source, controller, cards, game);
  controller.setTopCardRevealed(topCardRevealed);
  this.mayShuffle(controller, source, game);
  return true;
}

this.alternativeSourceCosts.addAll(player.getAlternativeSourceCosts());
this.topCardRevealed = player.isTopCardRevealed();
this.playersUnderYourControl.clear();
this.playersUnderYourControl.addAll(player.getPlayersUnderYourControl());

/**
 * Draw a card if possible (there is no replacement effect that prevent us
 * from drawing). Fire event about card drawn.
 *
 * @param game
 * @return
 */
protected int drawCard(Game game) {
  GameEvent event = GameEvent.getEvent(GameEvent.EventType.DRAW_CARD, player.getId(), player.getId());
  event.addAppliedEffects(appliedEffects);
  if (!game.replaceEvent(event)) {
    Card card = player.getLibrary().removeFromTop(game);
    if (card != null) {
      drawnCards.add(card);
      card.moveToZone(Zone.HAND, null, game, false);
      if (player.isTopCardRevealed()) {
        game.fireInformEvent(player.getLogName() + " draws a revealed card  (" + card.getLogName() + ')');
      }
      game.fireEvent(GameEvent.getEvent(GameEvent.EventType.DREW_CARD, card.getId(), player.getId()));
      return ArtificialScoringSystem.inst.getCardScore(card);
    }
  }
  return NEGATIVE_VALUE;
}

Card cardOnTop = (player.isTopCardRevealed() && player.getLibrary().hasCards())
    ? player.getLibrary().getFromTop(game) : null;
this.topCard = cardOnTop != null ? new CardView(cardOnTop) : null;

  score += value;
if (!player.isTopCardRevealed() && numDrawn > 0) {
  game.fireInformEvent(player.getLogName() + " draws " + CardUtil.numberToText(numDrawn, "a") + " card" + (numDrawn > 1 ? "s" : ""));

  return false;
boolean revealed = opponent.isTopCardRevealed(); // by looking at the cards with fateseal you have not to reveal the next card
opponent.setTopCardRevealed(false);
Cards cards = new CardsImpl();