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* Copyright 2010 BetaSteward_at_googlemail.com. All rights reserved.
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package mage.abilities.effects;
import java.util.UUID;
import mage.MageObject;
import mage.abilities.Ability;
import mage.abilities.SpellAbility;
import mage.abilities.effects.common.AttachEffect;
import mage.abilities.keyword.TransformAbility;
import mage.cards.Card;
import mage.constants.CardType;
import mage.constants.Duration;
import mage.constants.Outcome;
import mage.constants.SpellAbilityType;
import mage.constants.Zone;
import mage.game.Game;
import mage.game.events.GameEvent;
import mage.game.events.ZoneChangeEvent;
import mage.game.permanent.Permanent;
import mage.game.permanent.PermanentCard;
import mage.game.stack.StackAbility;
import mage.players.Player;
import mage.target.Target;
import mage.target.common.TargetCardInGraveyard;
/**
* Cards with the Aura subtype don't change the zone they are in, if there is no
* valid target on the battlefield. Also, when entering the battlefield and it
* was not cast (so from Zone != Hand), this effect gets the target to whitch to
* attach it and adds the Aura the the battlefield and attachs it to the target.
* The "attachTo:" value in game state has to be set therefore.
* <p>
* If no "attachTo:" value is defined, the controlling player has to chose the
* aura target.
* <p>
* This effect is automatically added to ContinuousEffects at the start of a
* game
*
* @author North
*/
public class AuraReplacementEffect extends ReplacementEffectImpl {
public AuraReplacementEffect() {
super(Duration.EndOfGame, Outcome.Neutral);
}
public AuraReplacementEffect(final AuraReplacementEffect effect) {
super(effect);
}
@Override
public AuraReplacementEffect copy() {
return new AuraReplacementEffect(this);
}
@Override
public boolean apply(Game game, Ability source) {
return true;
}
@Override
public boolean replaceEvent(GameEvent event, Ability source, Game game) {
Zone fromZone = ((ZoneChangeEvent) event).getFromZone();
Card card = game.getCard(event.getTargetId());
UUID sourceId = event.getSourceId();
UUID controllerId = event.getPlayerId();
if (game.getState().getValue(TransformAbility.VALUE_KEY_ENTER_TRANSFORMED + card.getId()) != null) {
card = card.getSecondCardFace();
}
// Aura cards that go to battlefield face down (Manifest) don't have to select targets
if (card.isFaceDown(game)) {
return false;
}
// Aura enters the battlefield attached
Object object = game.getState().getValue("attachTo:" + card.getId());
if (object != null && object instanceof PermanentCard) {
return false;
}
UUID targetId = null;
MageObject sourceObject = game.getObject(sourceId);
boolean enchantCardInGraveyard = false;
// if (sourceObject instanceof Spell) {
// if (fromZone.equals(Zone.EXILED)) {
// // cast from exile (e.g. Neightveil Spector) -> no replacement
// return false;
// }
// }
if (sourceObject instanceof StackAbility) {
StackAbility stackAbility = (StackAbility) sourceObject;
if (!stackAbility.getEffects().isEmpty()) {
targetId = stackAbility.getEffects().get(0).getTargetPointer().getFirst(game, stackAbility);
}
}
game.applyEffects(); // So continuousEffects are removed if previous effect of the same ability did move objects that cause continuous effects
Player controllingPlayer = null;
if (targetId == null) {
SpellAbility spellAbility = card.getSpellAbility();
if (spellAbility.getTargets().isEmpty()) {
for (Ability ability : card.getAbilities(game)) {
if ((ability instanceof SpellAbility)
&& SpellAbilityType.BASE_ALTERNATE == ((SpellAbility) ability).getSpellAbilityType()
&& !ability.getTargets().isEmpty()) {
spellAbility = (SpellAbility) ability;
break;
}
}
}
if (spellAbility.getTargets().isEmpty()) {
return false;
}
Target target = spellAbility.getTargets().get(0).copy();
Outcome auraOutcome = Outcome.BoostCreature;
for (Effect effect : spellAbility.getEffects()) {
if (effect instanceof AttachEffect) {
auraOutcome = effect.getOutcome();
break;
}
}
enchantCardInGraveyard = target instanceof TargetCardInGraveyard;
if (target != null) {
target.setNotTarget(true); // always not target because this way it's not handled targeted
target.clearChosen(); // neccessary if e.g. aura is blinked multiple times
}
if (event.getPlayerId() != null) {
controllingPlayer = game.getPlayer(event.getPlayerId());
} else {
controllingPlayer = game.getPlayer(card.getOwnerId());
}
if (target != null && controllingPlayer != null && controllingPlayer.choose(auraOutcome, target, card.getId(), game)) {
targetId = target.getFirstTarget();
}
}
Card targetCard = null;
Permanent targetPermanent = null;
if (enchantCardInGraveyard) {
targetCard = game.getCard(targetId);
} else {
targetPermanent = game.getPermanent(targetId);
}
Player targetPlayer = game.getPlayer(targetId);
if (targetCard != null || targetPermanent != null || targetPlayer != null) {
card = game.getCard(event.getTargetId());
card.removeFromZone(game, fromZone, sourceId);
PermanentCard permanent = new PermanentCard(card, (controllingPlayer == null ? card.getOwnerId() : controllingPlayer.getId()), game);
ZoneChangeEvent zoneChangeEvent = new ZoneChangeEvent(permanent, controllerId, fromZone, Zone.BATTLEFIELD);
permanent.updateZoneChangeCounter(game, zoneChangeEvent);
game.getBattlefield().addPermanent(permanent);
card.setZone(Zone.BATTLEFIELD, game);
if (permanent.entersBattlefield(event.getSourceId(), game, fromZone, true)) {
if (targetCard != null) {
permanent.attachTo(targetCard.getId(), game);
} else if (targetPermanent != null) {
targetPermanent.addAttachment(permanent.getId(), game);
} else if (targetPlayer != null) {
targetPlayer.addAttachment(permanent.getId(), game);
}
game.applyEffects();
game.fireEvent(zoneChangeEvent);
return true;
}
}
return false;
}
@Override
public boolean checksEventType(GameEvent event, Game game) {
return event.getType() == GameEvent.EventType.ZONE_CHANGE;
}
@Override
public boolean applies(GameEvent event, Ability source, Game game) {
if (((ZoneChangeEvent) event).getToZone() == Zone.BATTLEFIELD
&& (((ZoneChangeEvent) event).getFromZone() != Zone.STACK)) {
Card card = game.getCard(event.getTargetId());
if (card != null && (card.isEnchantment() && card.hasSubtype("Aura", game)
|| // in case of transformable enchantments
(game.getState().getValue(TransformAbility.VALUE_KEY_ENTER_TRANSFORMED + card.getId()) != null
&& card.getSecondCardFace() != null
&& card.getSecondCardFace().isEnchantment()
&& card.getSecondCardFace().hasSubtype("Aura", game)))) {
return true;
}
}
return false;
}
}