foul-magics/Mage/src/mage/abilities/keyword/FlashbackAbility.java

/*
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package mage.abilities.keyword;

import mage.Constants;
import mage.abilities.Ability;
import mage.abilities.ActivatedAbilityImpl;
import mage.abilities.DelayedTriggeredAbility;
import mage.abilities.costs.Cost;
import mage.abilities.effects.OneShotEffect;
import mage.abilities.effects.common.CreateDelayedTriggeredAbilityEffect;
import mage.abilities.effects.common.ExileSourceEffect;
import mage.cards.Card;
import mage.game.Game;
import mage.game.events.GameEvent;
import mage.game.events.ZoneChangeEvent;
import mage.players.Player;
import mage.target.Target;

/**
 *
 * @author nantuko
 */
public class FlashbackAbility extends /*SpellAbility*/ ActivatedAbilityImpl<FlashbackAbility> {

    public FlashbackAbility(Cost cost, Constants.TimingRule timingRule) {
        //super(cost, "", new FlashbackEffect(), Constants.Zone.GRAVEYARD);
        super(Constants.Zone.GRAVEYARD, new FlashbackEffect(), cost);
        this.timing = timingRule;
        this.usesStack = false;
        this.addEffect(new CreateDelayedTriggeredAbilityEffect(new FlashbackTriggeredAbility()));
    }

    public FlashbackAbility(final FlashbackAbility ability) {
        super(ability);
    }

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

    @Override
    public String getRule() {
        StringBuilder sbRule = new StringBuilder("Flashback ");
        boolean first = true;
        if (manaCosts.size() > 0) {
            sbRule.append(manaCosts.getText());
            first = false;
        }
        if (costs.size() > 0) {
            if (first) {
                sbRule.append(",");
            }
            sbRule.append(costs.getText());
        }
        return sbRule.toString();
    }
}

class FlashbackEffect extends OneShotEffect<FlashbackEffect> {

    public FlashbackEffect() {
        super(Constants.Outcome.Benefit);
        staticText = "";
    }

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

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

    @Override
    public boolean apply(Game game, Ability source) {
        Card card = (Card) game.getObject(source.getSourceId());
        if (card != null) {
            Player controller = game.getPlayer(source.getControllerId());
            if (controller != null) {
                card.getSpellAbility().clear();
                int amount = source.getManaCostsToPay().getX();
                card.getSpellAbility().getManaCostsToPay().setX(amount);
                for (Target target : card.getSpellAbility().getTargets()) {
                    target.setRequired(true);
                }
                return controller.cast(card.getSpellAbility(), game, true);
            }
        }
        return false;
    }
}

class FlashbackTriggeredAbility extends DelayedTriggeredAbility<FlashbackTriggeredAbility> {

    public FlashbackTriggeredAbility() {
        super(new ExileSourceEffect());
        usesStack = false;
    }

    public FlashbackTriggeredAbility(final FlashbackTriggeredAbility ability) {
        super(ability);
    }

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

    @Override
    public boolean checkTrigger(GameEvent event, Game game) {
        if (event.getType() == GameEvent.EventType.ZONE_CHANGE && event.getTargetId().equals(this.sourceId)) {
            ZoneChangeEvent zEvent = (ZoneChangeEvent) event;
            if (zEvent.getFromZone() == Constants.Zone.STACK) {
                return true;
            }
        }
        return false;
    }

    @Override
    public String getRule() {
        return "(If the flashback cost was paid, exile this card instead of putting it anywhere else any time it would leave the stack)";
    }

}