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* Copyright 2010 BetaSteward_at_googlemail.com. All rights reserved.
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package mage.abilities.effects;
import mage.constants.CardType;
import mage.constants.Duration;
import mage.constants.Outcome;
import mage.constants.Zone;
import mage.MageObject;
import mage.abilities.Ability;
import mage.cards.Card;
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 java.util.UUID;
import mage.abilities.SpellAbility;
import mage.abilities.effects.common.AttachEffect;
import mage.game.stack.Spell;
/**
* 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.
*
* If no "attachTo:" value is defined, the controlling player has to chose the aura target.
*
* 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();
// 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);
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);
}
}
if (targetId == null) {
Target target = card.getSpellAbility().getTargets().get(0);
Player player = game.getPlayer(card.getOwnerId());
Outcome auraOutcome = Outcome.BoostCreature;
Ability: for (Ability ability:card.getAbilities()) {
if (ability instanceof SpellAbility) {
for (Effect effect: ability.getEffects()) {
if (effect instanceof AttachEffect) {
auraOutcome = effect.getOutcome();
break Ability;
}
}
}
}
if (player != null && player.choose(auraOutcome, target, card.getId(), game)) {
targetId = target.getFirstTarget();
}
}
Permanent targetPermanent = game.getPermanent(targetId);
Player targetPlayer = game.getPlayer(targetId);
if (targetPermanent != null || targetPlayer != null) {
switch (fromZone) {
case GRAVEYARD:
game.getPlayer(card.getOwnerId()).removeFromGraveyard(card, game);
break;
case HAND:
game.getPlayer(card.getOwnerId()).removeFromHand(card, game);
break;
case LIBRARY:
game.getPlayer(card.getOwnerId()).removeFromLibrary(card, game);
break;
default:
}
game.rememberLKI(card.getId(), fromZone, card);
PermanentCard permanent = new PermanentCard(card, card.getOwnerId());
game.getBattlefield().addPermanent(permanent);
game.setZone(card.getId(), Zone.BATTLEFIELD);
game.applyEffects();
permanent.entersBattlefield(event.getSourceId(), game, fromZone, true);
game.applyEffects();
game.fireEvent(new ZoneChangeEvent(permanent, controllerId, fromZone, Zone.BATTLEFIELD));
if (targetPermanent != null) {
targetPermanent.addAttachment(permanent.getId(), game);
}
if (targetPlayer != null) {
targetPlayer.addAttachment(permanent.getId(), game);
}
}
return true;
}
@Override
public boolean applies(GameEvent event, Ability source, Game game) {
if (event.getType().equals(GameEvent.EventType.ZONE_CHANGE)) {
if (((ZoneChangeEvent) event).getToZone().equals(Zone.BATTLEFIELD)
&& !(((ZoneChangeEvent) event).getFromZone().equals(Zone.HAND)) ) {
Card card = game.getCard(event.getTargetId());
if (card != null && card.getCardType().contains(CardType.ENCHANTMENT) && card.hasSubtype("Aura")) {
return true;
}
}
}
return false;
}
}