Package mage.sets.apocalypse

Source Code of mage.sets.apocalypse.GerrardsVerdictEffect

/*
*  Copyright 2010 BetaSteward_at_googlemail.com. All rights reserved.
*
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package mage.sets.apocalypse;

import java.util.HashMap;
import java.util.Map;
import java.util.Map.Entry;
import java.util.UUID;
import mage.abilities.Ability;
import mage.abilities.effects.OneShotEffect;
import mage.abilities.effects.common.discard.DiscardTargetEffect;
import mage.cards.Card;
import mage.cards.CardImpl;
import mage.cards.Cards;
import mage.cards.CardsImpl;
import mage.constants.CardType;
import mage.constants.Outcome;
import mage.constants.Rarity;
import mage.constants.WatcherScope;
import mage.filter.common.FilterLandCard;
import mage.game.Game;
import mage.game.events.GameEvent;
import mage.players.Player;
import mage.target.TargetPlayer;
import mage.watchers.Watcher;

/**
*
* @author LevelX2
*/
public class GerrardsVerdict extends CardImpl {

    public GerrardsVerdict(UUID ownerId) {
        super(ownerId, 102, "Gerrard's Verdict", Rarity.UNCOMMON, new CardType[]{CardType.SORCERY}, "{W}{B}");
        this.expansionSetCode = "APC";

        this.color.setBlack(true);
        this.color.setWhite(true);

        // Target player discards two cards. You gain 3 life for each land card discarded this way.
        this.getSpellAbility().addEffect(new DiscardTargetEffect(2));
        this.getSpellAbility().addEffect(new GerrardsVerdictEffect());
        this.getSpellAbility().addTarget(new TargetPlayer());
        this.addWatcher(new GerrardsVerdictWatcher());

    }

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

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

class GerrardsVerdictEffect extends OneShotEffect {

    public GerrardsVerdictEffect() {
        super(Outcome.Benefit);
        this.staticText = "You gain 3 life for each land card discarded this way";
    }

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

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

    @Override
    public boolean apply(Game game, Ability source) {
        Player controller = game.getPlayer(source.getControllerId());
        if (controller != null) {
            GerrardsVerdictWatcher watcher = (GerrardsVerdictWatcher) game.getState().getWatchers().get("GerrardsVerdictWatcher");
            if (watcher != null) {
                Cards cards = watcher.getCardsDiscardedBySource(source.getSourceId());
                int life = cards.count(new FilterLandCard(), game) * 3;
                controller.gainLife(life, game);
                return true;
            }
        }
        return false;
    }
}

class GerrardsVerdictWatcher extends Watcher {

    private final Map<UUID, Cards> cardsDiscardedBySource = new HashMap<>();

    public GerrardsVerdictWatcher() {
        super("GerrardsVerdictWatcher", WatcherScope.GAME);
    }

    public GerrardsVerdictWatcher(final GerrardsVerdictWatcher watcher) {
        super(watcher);
        for (Entry<UUID, Cards> entry : watcher.cardsDiscardedBySource.entrySet()) {
            cardsDiscardedBySource.put(entry.getKey(), entry.getValue());
        }
    }

    @Override
    public void watch(GameEvent event, Game game) {
        if (event.getType() == GameEvent.EventType.DISCARDED_CARD) {
            Card card = game.getCard(event.getTargetId());
            if (card != null) {
                Cards cards = cardsDiscardedBySource.get(event.getSourceId());
                if (cards == null) {
                    cards = new CardsImpl();
                    cardsDiscardedBySource.put(event.getSourceId(), cards);
                }
                cards.add(card);
            }
        }
    }

    /**
     * get and remove the cards discarded by a sourceId
     * @param sourceId
     * @return
     */
    public Cards getCardsDiscardedBySource(UUID sourceId) {
        Cards cards = cardsDiscardedBySource.get(sourceId);
        cardsDiscardedBySource.remove(sourceId);
        return cards;
    }

    @Override
    public void reset() {
        cardsDiscardedBySource.clear();
    }

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