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package mage.abilities.keyword;
import mage.constants.Outcome;
import mage.constants.TargetController;
import mage.constants.Zone;
import mage.abilities.Ability;
import mage.abilities.TriggeredAbilityImpl;
import mage.abilities.effects.OneShotEffect;
import mage.filter.common.FilterControlledPermanent;
import mage.filter.predicate.permanent.ControllerPredicate;
import mage.game.Game;
import mage.game.events.GameEvent;
import mage.game.events.GameEvent.EventType;
import mage.game.permanent.Permanent;
import mage.players.Player;
import mage.target.Target;
import mage.target.common.TargetControlledPermanent;
import java.util.UUID;
/**
* 702.84. Annihilator 702.84a Annihilator is a triggered ability. "Annihilator
* N" means "Whenever this creature attacks, defending player sacrifices N
* permanents."
*
* 702.84b If a creature has multiple instances of annihilator, each triggers
* separately.
*
* @author maurer.it_at_gmail.com
*/
public class AnnihilatorAbility extends TriggeredAbilityImpl {
int count;
public AnnihilatorAbility(int count) {
super(Zone.BATTLEFIELD, new AnnihilatorEffect(count), false);
this.count = count;
}
public AnnihilatorAbility(final AnnihilatorAbility ability) {
super(ability);
this.count = ability.count;
}
@Override
public boolean checkTrigger(GameEvent event, Game game) {
if (event.getType() == EventType.ATTACKER_DECLARED && event.getSourceId().equals(this.getSourceId())) {
return true;
}
return false;
}
@Override
public String getRule() {
return "Annihilator " + count;
}
@Override
public AnnihilatorAbility copy() {
return new AnnihilatorAbility(this);
}
}
class AnnihilatorEffect extends OneShotEffect {
private final int count;
private static final FilterControlledPermanent filter = new FilterControlledPermanent();
AnnihilatorEffect(int count) {
super(Outcome.Sacrifice);
this.count = count;
}
AnnihilatorEffect(AnnihilatorEffect effect) {
super(effect);
this.count = effect.count;
}
@Override
public boolean apply(Game game, Ability source) {
UUID defenderId = game.getCombat().getDefenderId(source.getSourceId());
Player player = game.getPlayer(defenderId);
//Defender may be a planeswalker.
if (player == null) {
Permanent permanent = game.getPermanent(defenderId);
if (permanent != null) {
player = game.getPlayer(permanent.getControllerId());
}
}
if (player != null) {
int amount = Math.min(count, game.getBattlefield().countAll(filter, player.getId(), game));
Target target = new TargetControlledPermanent(amount, amount, filter, false);
//A spell or ability could have removed the only legal target this player
//had, if thats the case this ability should fizzle.
if (target.canChoose(player.getId(), game)) {
boolean abilityApplied = false;
while (!target.isChosen() && target.canChoose(player.getId(), game) && player.isInGame()) {
player.choose(Outcome.Sacrifice, target, source.getSourceId(), game);
}
for (int idx = 0; idx < target.getTargets().size(); idx++) {
Permanent permanent = game.getPermanent((UUID) target.getTargets().get(idx));
if (permanent != null) {
abilityApplied |= permanent.sacrifice(source.getSourceId(), game);
}
}
return abilityApplied;
}
}
return false;
}
@Override
public AnnihilatorEffect copy() {
return new AnnihilatorEffect(this);
}
}