foul-magics/Mage.Sets/src/mage/cards/s/SiegeModification.java

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package mage.cards.s;

import mage.abilities.Ability;
import mage.abilities.common.SimpleStaticAbility;
import mage.abilities.effects.ContinuousEffectImpl;
import mage.abilities.effects.Effect;
import mage.abilities.effects.common.AttachEffect;
import mage.abilities.effects.common.continuous.BoostEnchantedEffect;
import mage.abilities.effects.common.continuous.GainAbilityAttachedEffect;
import mage.abilities.keyword.EnchantAbility;
import mage.abilities.keyword.FirstStrikeAbility;
import mage.cards.CardImpl;
import mage.cards.CardSetInfo;
import mage.constants.*;
import mage.filter.FilterPermanent;
import mage.filter.predicate.Predicates;
import mage.filter.predicate.mageobject.CardTypePredicate;
import mage.filter.predicate.mageobject.SubtypePredicate;
import mage.game.Game;
import mage.game.permanent.Permanent;
import mage.target.TargetPermanent;

import java.util.UUID;

/**
 * @author JRHerlehy
 */
public class SiegeModification extends CardImpl {

    private static final FilterPermanent filter = new FilterPermanent("creature or vehicle");

    static {
        filter.add(Predicates.or(new CardTypePredicate(CardType.CREATURE),
                new SubtypePredicate("Vehicle")));
    }

    public SiegeModification(UUID ownerId, CardSetInfo setInfo) {
        super(ownerId, setInfo, new CardType[]{CardType.ENCHANTMENT}, "{1}{R}{R}");

        this.subtype.add("Aura");

        // Enchant creature or Vehicle
        TargetPermanent auraTarget = new TargetPermanent(filter);
        this.getSpellAbility().addTarget(auraTarget);
        this.getSpellAbility().addEffect(new AttachEffect(Outcome.Benefit));
        Ability ability = new EnchantAbility(auraTarget.getTargetName());
        this.addAbility(ability);

        // As long as enchanted permanent is a Vehicle, it's a creature in addition to its other types.
        this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new BecomesCreatureIfVehicleEffect()));

        // Enchanted creature gets +3/+0 and has first strike.
        Effect effect = new BoostEnchantedEffect(3, 0);
        effect.setText("Enchanted creature gets +3/+0");
        ability = new SimpleStaticAbility(Zone.BATTLEFIELD, effect);
        effect = new GainAbilityAttachedEffect(FirstStrikeAbility.getInstance(), AttachmentType.AURA);
        effect.setText(" and has first strike");
        ability.addEffect(effect);
        this.addAbility(ability);
    }

    public SiegeModification(final SiegeModification card) {
        super(card);
    }

    @Override
    public SiegeModification copy() {
        return new SiegeModification(this);
    }

    private class BecomesCreatureIfVehicleEffect extends ContinuousEffectImpl {

        private CardType addedType = CardType.CREATURE;

        public BecomesCreatureIfVehicleEffect() {
            super(Duration.WhileOnBattlefield, Layer.TypeChangingEffects_4, SubLayer.NA, Outcome.Benefit);
            this.staticText = "As long as enchanted permanent is a Vehicle, it's a creature in addition to its other types";
        }

        public BecomesCreatureIfVehicleEffect(final BecomesCreatureIfVehicleEffect effect) {
            super(effect);
            this.staticText = effect.staticText;
        }

        @Override
        public boolean apply(Game game, Ability source) {
            Permanent aura = game.getPermanent(source.getSourceId());
            if (aura != null && aura.getAttachedTo() != null) {
                Permanent enchanted = game.getPermanent(aura.getAttachedTo());
                if (enchanted != null && enchanted.getSubtype(game).contains("Vehicle")) {
                    enchanted.getCardType().add(addedType);
                }
            }

            return true;
        }

        @Override
        public BecomesCreatureIfVehicleEffect copy() {
            return new BecomesCreatureIfVehicleEffect(this);
        }
    }
}