NoeticScales.java example

Explorer
mage-master
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package mage.cards.n;

import java.util.UUID;
import mage.abilities.Ability;
import mage.abilities.common.BeginningOfUpkeepTriggeredAbility;
import mage.abilities.effects.OneShotEffect;
import mage.cards.CardImpl;
import mage.cards.CardSetInfo;
import mage.constants.CardType;
import mage.constants.Outcome;
import mage.constants.TargetController;
import mage.constants.Zone;
import mage.filter.common.FilterCreaturePermanent;
import mage.game.Game;
import mage.game.permanent.Permanent;
import mage.players.Player;

/**
 *
 * @author jeffwadsworth
 */
public class NoeticScales extends CardImpl {

    public NoeticScales(UUID ownerId, CardSetInfo setInfo) {
        super(ownerId, setInfo, new CardType[]{CardType.ARTIFACT}, "{4}");

        // At the beginning of each player's upkeep, return to its owner's hand each creature that player controls with power greater than the number of cards in his or her hand.
        this.addAbility(new BeginningOfUpkeepTriggeredAbility(Zone.BATTLEFIELD, new NoeticScalesEffect(), TargetController.ANY, false, true));
    }

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

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

class NoeticScalesEffect extends OneShotEffect {

    public NoeticScalesEffect() {
        super(Outcome.ReturnToHand);
        this.staticText = "return to its owner's hand each creature that player controls with power greater than the number of cards in his or her hand";
    }

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

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

    @Override
    public boolean apply(Game game, Ability source) {
        FilterCreaturePermanent filter = new FilterCreaturePermanent();
        Player player = game.getPlayer(targetPointer.getFirst(game, source));
        if (player != null) {
            int numberOfCardsInHand = player.getHand().size();
            for (Permanent creature : game.getBattlefield().getAllActivePermanents(filter, player.getId(), game)) {
                if (creature.getPower().getValue() > numberOfCardsInHand) {
                    if (creature.moveToZone(Zone.HAND, source.getId(), game, false)) {
                        game.informPlayers(player.getLogName() + " moves " + creature.getLogName() + " from the battlefield to their hand.");
                    }
                }
            }
            return true;
        }
        return false;
    }
}