"Flashback" keyword support

Mage/src/mage/abilities/keyword/FlashbackAbility.java

@@ -0,0 +1,153 @@
+/*
+ *  Copyright 2011 BetaSteward_at_googlemail.com. All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without modification, are
+ *  permitted provided that the following conditions are met:
+ *
+ *     1. Redistributions of source code must retain the above copyright notice, this list of
+ *        conditions and the following disclaimer.
+ *
+ *     2. Redistributions in binary form must reproduce the above copyright notice, this list
+ *        of conditions and the following disclaimer in the documentation and/or other materials
+ *        provided with the distribution.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY BetaSteward_at_googlemail.com ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ *  WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ *  FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BetaSteward_at_googlemail.com OR
+ *  CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ *  SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ *  ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ *  NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+ *  ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ *  The views and conclusions contained in the software and documentation are those of the
+ *  authors and should not be interpreted as representing official policies, either expressed
+ *  or implied, of BetaSteward_at_googlemail.com.
+ */
+package mage.abilities.keyword;
+
+import mage.Constants;
+import mage.abilities.Ability;
+import mage.abilities.ActivatedAbilityImpl;
+import mage.abilities.DelayedTriggeredAbility;
+import mage.abilities.costs.mana.ManaCosts;
+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.targetpointer.FixedTarget;
+
+/**
+ * @author nantuko
+ */
+public class FlashbackAbility extends ActivatedAbilityImpl<FlashbackAbility> {
+
+	public FlashbackAbility(ManaCosts costs, Constants.TimingRule timingRule) {
+		super(Constants.Zone.GRAVEYARD, new FlashbackEffect(), costs);
+		this.timing = timingRule;
+		this.usesStack = false;
+		this.addEffect(new CreateDelayedTriggeredAbilityEffect(new FlashbackTriggeredAbility()));
+	}
+
+	@Override
+	public boolean activate(Game game, boolean noMana) {
+		Card card = game.getCard(sourceId);
+		if (card != null) {
+			getEffects().get(0).setTargetPointer(new FixedTarget(card.getId()));
+			return super.activate(game, noMana);
+		}
+		return false;
+	}
+
+	public FlashbackAbility(final FlashbackAbility ability) {
+		super(ability);
+	}
+
+	@Override
+	public FlashbackAbility copy() {
+		return new FlashbackAbility(this);
+	}
+
+	@Override
+	public String getRule() {
+		StringBuilder sbRule = new StringBuilder("Flashback ");
+		if (manaCosts.size() > 0) {
+			sbRule.append(manaCosts.getText());
+		}
+		if (costs.size() > 0) {
+			if (sbRule.length() > 0) {
+				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 target = (Card) game.getObject(targetPointer.getFirst(source));
+		if (target != null) {
+			Player controller = game.getPlayer(target.getOwnerId());
+			if (controller != null) {
+				return controller.cast(target.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)";
+	}
+
+}