Browse.java example

Explorer
mage-master
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package mage.cards.b;

import mage.abilities.Ability;
import mage.abilities.common.SimpleActivatedAbility;
import mage.abilities.costs.mana.ManaCostsImpl;
import mage.abilities.effects.OneShotEffect;
import mage.cards.*;
import mage.constants.CardType;
import mage.constants.Outcome;
import mage.constants.Zone;
import mage.filter.FilterCard;
import mage.game.Game;
import mage.players.Player;
import mage.target.TargetCard;

import java.util.UUID;

/**
 *
 * @author Quercitron
 */
public class Browse extends CardImpl {

    public Browse(UUID ownerId, CardSetInfo setInfo) {
        super(ownerId,setInfo,new CardType[]{CardType.ENCHANTMENT},"{2}{U}{U}");

        // {2}{U}{U}: Look at the top five cards of your library, put one of them into your hand, and exile the rest.
        SimpleActivatedAbility ability = new SimpleActivatedAbility(Zone.BATTLEFIELD, new BrowseEffect(), new ManaCostsImpl("{2}{U}{U}"));
        this.addAbility(ability);
    }

    public Browse(final Browse card) {
        super(card);
    }

    @Override
    public Browse copy() {
        return new Browse(this);
    }
}

class BrowseEffect extends OneShotEffect {

    public BrowseEffect() {
        super(Outcome.DrawCard);
        this.staticText = "Look at the top five cards of your library, put one of them into your hand, and exile the rest";
    }

    public BrowseEffect(final BrowseEffect effect) {
        super(effect);
    }

    @Override
    public BrowseEffect copy() {
        return new BrowseEffect(this);
    }

    @Override
    public boolean apply(Game game, Ability source) {
        Player player = game.getPlayer(source.getControllerId());

        if (player != null) {
            Cards cards = new CardsImpl();
            int cardsCount = Math.min(5, player.getLibrary().size());
            for (int i = 0; i < cardsCount; i++) {
                Card card = player.getLibrary().removeFromTop(game);
                if (card != null) {
                    cards.add(card);
                }
            }

            if (!cards.isEmpty()) {
                player.lookAtCards("Browse", cards, game);

                TargetCard target = new TargetCard(Zone.LIBRARY, new FilterCard("card to put in your hand"));
                if (player.choose(Outcome.Benefit, cards, target, game)) {
                    Card card = cards.get(target.getFirstTarget(), game);
                    if (card != null) {
                        card.moveToZone(Zone.HAND, source.getSourceId(), game, false);
                        cards.remove(card);
                    }
                }

                for (Card card : cards.getCards(game)) {
                    card.moveToExile(null, null, source.getSourceId(), game);
                }
            }
            return true;
        }
        return false;
    }
}