[NCC] Implemented Boxing Ring

Mage.Sets/src/mage/cards/b/BoxingRing.java

@@ -0,0 +1,162 @@
+package mage.cards.b;
+
+import mage.MageObject;
+import mage.MageObjectReference;
+import mage.abilities.Ability;
+import mage.abilities.common.EntersBattlefieldControlledTriggeredAbility;
+import mage.abilities.condition.Condition;
+import mage.abilities.costs.common.TapSourceCost;
+import mage.abilities.decorator.ConditionalActivatedAbility;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.effects.common.CreateTokenEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.Outcome;
+import mage.constants.WatcherScope;
+import mage.constants.Zone;
+import mage.filter.FilterPermanent;
+import mage.filter.common.FilterCreaturePermanent;
+import mage.filter.predicate.ObjectSourcePlayer;
+import mage.filter.predicate.ObjectSourcePlayerPredicate;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.permanent.Permanent;
+import mage.game.permanent.token.TreasureToken;
+import mage.target.TargetPermanent;
+import mage.watchers.Watcher;
+
+import java.util.HashSet;
+import java.util.Objects;
+import java.util.Set;
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class BoxingRing extends CardImpl {
+
+    private static final FilterPermanent filter
+            = new FilterCreaturePermanent("creature you don't control with the same mana value");
+
+    static {
+        filter.add(BoxingRingPredicate.instance);
+    }
+
+    public BoxingRing(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ARTIFACT}, "{1}{G}");
+
+        // Whenever a creature enters the battlefield under your control, it fights up to one target creature you don't control with the same mana value.
+        Ability ability = new EntersBattlefieldControlledTriggeredAbility(new BoxingRingFightEffect(), filter);
+        ability.addTarget(new TargetPermanent(0, 1, filter));
+        this.addAbility(ability);
+
+        // {T}: Create a Treasure token. Activate only if you control a creature that fought this turn.
+        this.addAbility(new ConditionalActivatedAbility(
+                Zone.BATTLEFIELD, new CreateTokenEffect(new TreasureToken()),
+                new TapSourceCost(), BoxingRingCondition.instance
+        ), new BoxingRingWatcher());
+    }
+
+    private BoxingRing(final BoxingRing card) {
+        super(card);
+    }
+
+    @Override
+    public BoxingRing copy() {
+        return new BoxingRing(this);
+    }
+}
+
+enum BoxingRingPredicate implements ObjectSourcePlayerPredicate<Permanent> {
+    instance;
+
+    @Override
+    public boolean apply(ObjectSourcePlayer<Permanent> input, Game game) {
+        return input
+                .getObject()
+                .getManaValue()
+                == input
+                .getSource()
+                .getEffects()
+                .stream()
+                .map(effect -> effect.getValue("permanentEnteringBattlefield"))
+                .map(Permanent.class::cast)
+                .filter(Objects::nonNull)
+                .map(MageObject::getManaValue)
+                .findFirst()
+                .orElse(-1);
+    }
+}
+
+class BoxingRingFightEffect extends OneShotEffect {
+
+    BoxingRingFightEffect() {
+        super(Outcome.Benefit);
+        staticText = "it fights up to one target creature you don't control with the same mana value";
+    }
+
+    private BoxingRingFightEffect(final BoxingRingFightEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public BoxingRingFightEffect copy() {
+        return new BoxingRingFightEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Permanent permanent = (Permanent) getValue("permanentEnteringBattlefield");
+        Permanent creature = game.getPermanent(getTargetPointer().getFirst(game, source));
+        return permanent != null && creature != null && permanent.fight(creature, source, game);
+    }
+}
+
+enum BoxingRingCondition implements Condition {
+    instance;
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        return BoxingRingWatcher.checkPlayer(source.getControllerId(), game);
+    }
+
+    @Override
+    public String toString() {
+        return "you control a creature that fought this turn";
+    }
+}
+
+class BoxingRingWatcher extends Watcher {
+
+    private final Set<MageObjectReference> morSet = new HashSet<>();
+
+    BoxingRingWatcher() {
+        super(WatcherScope.GAME);
+    }
+
+    @Override
+    public void watch(GameEvent event, Game game) {
+        if (event.getType() == GameEvent.EventType.FIGHTED_PERMANENT) {
+            morSet.add(new MageObjectReference(game.getPermanent(event.getTargetId()), game));
+        }
+    }
+
+    @Override
+    public void reset() {
+        super.reset();
+        morSet.clear();
+    }
+
+    static boolean checkPlayer(UUID playerId, Game game) {
+        return game
+                .getState()
+                .getWatcher(BoxingRingWatcher.class)
+                .morSet
+                .stream()
+                .filter(mor -> mor.zoneCounterIsCurrent(game))
+                .map(MageObjectReference::getSourceId)
+                .map(game::getControllerId)
+                .anyMatch(playerId::equals);
+    }
+}

Mage.Sets/src/mage/sets/NewCapennaCommander.java

@@ -27,6 +27,7 @@ public final class NewCapennaCommander extends ExpansionSet {
         cards.add(new SetCardInfo("Angelic Sleuth", 113, Rarity.RARE, mage.cards.a.AngelicSleuth.class));
         cards.add(new SetCardInfo("Bennie Bracks, Zoologist", 86, Rarity.MYTHIC, mage.cards.b.BennieBracksZoologist.class));
         cards.add(new SetCardInfo("Body Count", 34, Rarity.RARE, mage.cards.b.BodyCount.class));
+        cards.add(new SetCardInfo("Boxing Ring", 91, Rarity.RARE, mage.cards.b.BoxingRing.class));
         cards.add(new SetCardInfo("Brokers Confluence", 168, Rarity.RARE, mage.cards.b.BrokersConfluence.class));
         cards.add(new SetCardInfo("Damning Verdict", 15, Rarity.RARE, mage.cards.d.DamningVerdict.class));
         cards.add(new SetCardInfo("Extravagant Replication", 25, Rarity.RARE, mage.cards.e.ExtravagantReplication.class));