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package mage.abilities.keyword;
import mage.MageObject;
import mage.abilities.Ability;
import mage.abilities.TriggeredAbilityImpl;
import mage.abilities.common.ZoneChangeTriggeredAbility;
import mage.abilities.effects.Effect;
import mage.abilities.effects.OneShotEffect;
import mage.cards.Card;
import mage.constants.CardType;
import mage.constants.Outcome;
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.target.common.TargetCreaturePermanent;
import mage.target.targetpointer.FixedTarget;
/**
* 702.53. Haunt
*
* 702.53a Haunt is a triggered ability. "Haunt" on a permanent means "When this permanent is put
* into a graveyard from the battlefield, exile it haunting target creature."
* "Haunt" on an instant or sorcery spell means "When this spell is put into a graveyard during
* its resolution, exile it haunting target creature."
*
* 702.53b Cards that are in the exile zone as the result of a haunt ability "haunt" the creature
* targeted by that ability. The phrase "creature it haunts" refers to the object targeted by the
* haunt ability, regardless of whether or not that object is still a creature.
*
* 702.53c Triggered abilities of cards with haunt that refer to the haunted creature can trigger in the exile zone.
*
* @author LevelX2
*/
public class HauntAbility extends TriggeredAbilityImpl {
private boolean usedFromExile = false;
private boolean creatureHaunt;
public HauntAbility(Card card, Effect effect) {
super(Zone.ALL, effect , false);
creatureHaunt = card.isCreature();
addSubAbility(new HauntExileAbility(creatureHaunt));
}
public HauntAbility(final HauntAbility ability) {
super(ability);
this.usedFromExile = ability.usedFromExile;
this.creatureHaunt = ability.creatureHaunt;
}
@Override
public HauntAbility copy() {
return new HauntAbility(this);
}
@Override
public boolean checkEventType(GameEvent event, Game game) {
switch (event.getType()) {
case ENTERS_THE_BATTLEFIELD:
case ZONE_CHANGE:
return true;
}
return false;
}
@Override
public boolean checkTrigger(GameEvent event, Game game) {
switch (event.getType()) {
case ENTERS_THE_BATTLEFIELD:
if (game.getState().getZone(getSourceId()) == Zone.BATTLEFIELD) {
return event.getTargetId().equals(getSourceId());
}
break;
case ZONE_CHANGE:
if (!usedFromExile && game.getState().getZone(getSourceId()) == Zone.EXILED) {
ZoneChangeEvent zEvent = (ZoneChangeEvent) event;
if (zEvent.isDiesEvent()) {
Card card = game.getCard(getSourceId());
if (card != null) {
String key = new StringBuilder("Haunting_").append(getSourceId().toString()).append('_').append(card.getZoneChangeCounter(game)).toString();
Object object = game.getState().getValue(key);
if (object != null && object instanceof FixedTarget) {
FixedTarget target = (FixedTarget) object;
if (target.getTarget() != null && target.getTarget().equals(event.getTargetId())) {
usedFromExile = true;
return true;
}
}
}
}
}
break;
default:
return false;
}
return false;
}
@Override
public String getRule() {
return (creatureHaunt ? "When {this} enters the battlefield or the creature it haunts dies, " :
"When the creature {this} haunts dies, ")
+ super.getRule();
}
}
class HauntExileAbility extends ZoneChangeTriggeredAbility {
private final static String RULE_TEXT_CREATURE = "Haunt <i>(When this creature dies, exile it haunting target creature.)</i>";
private final static String RULE_TEXT_SPELL = "Haunt <i>(When this spell card is put into a graveyard after resolving, exile it haunting target creature.)</i>";
private boolean creatureHaunt;
// TODO: It's not checked yet, if the Haunt spell has resolved (and was not countered or removed from stack).
public HauntExileAbility(boolean creatureHaunt) {
super(creatureHaunt ? Zone.BATTLEFIELD: Zone.STACK, Zone.GRAVEYARD, new HauntEffect(), null, false);
this.creatureHaunt = creatureHaunt;
this.setRuleAtTheTop(creatureHaunt);
this.addTarget(new TargetCreaturePermanent());
}
public HauntExileAbility(final HauntExileAbility ability) {
super(ability);
this.creatureHaunt = ability.creatureHaunt;
}
@Override
public boolean isInUseableZone(Game game, MageObject source, GameEvent event) {
boolean fromOK = true;
Permanent sourcePermanent = (Permanent) game.getLastKnownInformation(sourceId, Zone.BATTLEFIELD);
if (creatureHaunt && sourcePermanent == null) {
// check it was previously on battlefield
fromOK = false;
}
if (!this.hasSourceObjectAbility(game, sourcePermanent, event)) {
return false;
}
// check now it is in graveyard
Zone after = game.getState().getZone(sourceId);
return fromOK && after != null && Zone.GRAVEYARD.match(after);
}
@Override
public String getRule() {
return creatureHaunt ? RULE_TEXT_CREATURE : RULE_TEXT_SPELL;
}
@Override
public HauntExileAbility copy() {
return new HauntExileAbility(this);
}
}
class HauntEffect extends OneShotEffect {
public HauntEffect() {
super(Outcome.Benefit);
this.staticText = "exile it haunting target creature";
}
public HauntEffect(final HauntEffect effect) {
super(effect);
}
@Override
public HauntEffect copy() {
return new HauntEffect(this);
}
@Override
public boolean apply(Game game, Ability source) {
Card card = game.getCard(source.getSourceId());
if (card != null) {
Permanent hauntedCreature = game.getPermanent(targetPointer.getFirst(game, source));
// haunting card will only be moved to exile, if
if (hauntedCreature != null) {
if (card.moveToExile(source.getSourceId(), "Haunting", source.getSourceId(), game)) {
// remember the haunted creature
String key = new StringBuilder("Haunting_").append(source.getSourceId().toString()).append('_').append(card.getZoneChangeCounter(game)).toString();
game.getState().setValue(key, new FixedTarget(targetPointer.getFirst(game, source)));
card.addInfo("hauntinfo", new StringBuilder("Haunting ").append(hauntedCreature.getLogName()).toString(), game);
hauntedCreature.addInfo("hauntinfo", new StringBuilder("Haunted by ").append(card.getLogName()).toString(), game);
if (!game.isSimulation()) {
game.informPlayers(new StringBuilder(card.getName()).append(" haunting ").append(hauntedCreature.getLogName()).toString());
}
}
return true;
}
}
return false;
}
}