Implemented Chandra's Regulator

Mage.Sets/src/mage/cards/c/ChandrasRegulator.java

@@ -0,0 +1,158 @@
+package mage.cards.c;
+
+import mage.ObjectColor;
+import mage.abilities.Ability;
+import mage.abilities.LoyaltyAbility;
+import mage.abilities.TriggeredAbilityImpl;
+import mage.abilities.common.SimpleActivatedAbility;
+import mage.abilities.costs.common.DiscardTargetCost;
+import mage.abilities.costs.common.TapSourceCost;
+import mage.abilities.costs.mana.GenericManaCost;
+import mage.abilities.costs.mana.ManaCostsImpl;
+import mage.abilities.effects.Effect;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.effects.common.DrawCardSourceControllerEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.filter.FilterCard;
+import mage.filter.predicate.Predicates;
+import mage.filter.predicate.mageobject.ColorPredicate;
+import mage.filter.predicate.mageobject.SubtypePredicate;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.permanent.Permanent;
+import mage.game.stack.StackAbility;
+import mage.players.Player;
+import mage.target.common.TargetCardInHand;
+
+import java.util.UUID;
+
+/**
+ * @author TheElk801
+ */
+public final class ChandrasRegulator extends CardImpl {
+
+    private static final FilterCard filter = new FilterCard("a Mountain card or a red card");
+
+    static {
+        filter.add(Predicates.or(
+                new SubtypePredicate(SubType.MOUNTAIN),
+                new ColorPredicate(ObjectColor.RED)
+        ));
+    }
+
+    public ChandrasRegulator(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ARTIFACT}, "{1}{R}");
+
+        this.addSuperType(SuperType.LEGENDARY);
+
+        // Whenever you activate a loyalty ability of a Chandra planeswalker, you may pay {1}. If you do, copy that ability. You may choose new targets for the copy.
+        this.addAbility(new ChandrasRegulatorTriggeredAbility());
+
+        // {1}, {T}, Discard a Mountain card or a red card: Draw a card.
+        Ability ability = new SimpleActivatedAbility(
+                new DrawCardSourceControllerEffect(1), new GenericManaCost(1)
+        );
+        ability.addCost(new TapSourceCost());
+        ability.addCost(new DiscardTargetCost(new TargetCardInHand(filter)));
+        this.addAbility(ability);
+    }
+
+    private ChandrasRegulator(final ChandrasRegulator card) {
+        super(card);
+    }
+
+    @Override
+    public ChandrasRegulator copy() {
+        return new ChandrasRegulator(this);
+    }
+}
+
+class ChandrasRegulatorTriggeredAbility extends TriggeredAbilityImpl {
+
+    ChandrasRegulatorTriggeredAbility() {
+        super(Zone.BATTLEFIELD, new ChandrasRegulatorEffect(), false);
+    }
+
+    private ChandrasRegulatorTriggeredAbility(final ChandrasRegulatorTriggeredAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public ChandrasRegulatorTriggeredAbility copy() {
+        return new ChandrasRegulatorTriggeredAbility(this);
+    }
+
+    @Override
+    public boolean checkEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.ACTIVATED_ABILITY;
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        if (!event.getPlayerId().equals(getControllerId())) {
+            return false;
+        }
+        StackAbility stackAbility = (StackAbility) game.getStack().getStackObject(event.getSourceId());
+        if (stackAbility == null || !(stackAbility.getStackAbility() instanceof LoyaltyAbility)) {
+            return false;
+        }
+        Permanent permanent = stackAbility.getSourcePermanentOrLKI(game);
+        if (permanent == null || !permanent.isPlaneswalker()
+                || !permanent.hasSubtype(SubType.CHANDRA, game)) {
+            return false;
+        }
+        Effect effect = this.getEffects().get(0);
+        effect.setValue("stackAbility", stackAbility);
+        return true;
+    }
+
+    @Override
+    public String getRule() {
+        return "Whenever you activate a loyalty ability of a Chandra planeswalker, you may pay {1}. " +
+                "If you do, copy that ability. You may choose new targets for the copy.";
+    }
+}
+
+class ChandrasRegulatorEffect extends OneShotEffect {
+
+    ChandrasRegulatorEffect() {
+        super(Outcome.Benefit);
+    }
+
+    private ChandrasRegulatorEffect(final ChandrasRegulatorEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public ChandrasRegulatorEffect copy() {
+        return new ChandrasRegulatorEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player player = game.getPlayer(source.getControllerId());
+        ManaCostsImpl cost = new ManaCostsImpl("{1}");
+        if (player == null) {
+            return false;
+        }
+        if (!cost.canPay(source, source.getSourceId(), player.getId(), game)
+                || !player.chooseUse(Outcome.Benefit, "Pay " + cost.getText() +
+                "? If you do, copy that ability. You may choose new targets for the copy.", source, game)) {
+            return true;
+        }
+        if (!cost.pay(source, game, source.getSourceId(), source.getControllerId(), false, null)) {
+            return true;
+        }
+        StackAbility ability = (StackAbility) getValue("stackAbility");
+        Player controller = game.getPlayer(source.getControllerId());
+        Permanent sourcePermanent = game.getPermanentOrLKIBattlefield(source.getSourceId());
+        if (ability == null || controller == null || sourcePermanent == null) {
+            return false;
+        }
+        ability.createCopyOnStack(game, source, source.getControllerId(), true);
+        game.informPlayers(sourcePermanent.getIdName() + ": " + controller.getLogName() + " copied activated ability");
+        return true;
+    }
+}

Mage.Sets/src/mage/sets/CoreSet2020.java

@@ -67,6 +67,7 @@ public final class CoreSet2020 extends ExpansionSet {
         cards.add(new SetCardInfo("Cavalier of Thorns", 167, Rarity.MYTHIC, mage.cards.c.CavalierOfThorns.class));
         cards.add(new SetCardInfo("Cerulean Drake", 53, Rarity.UNCOMMON, mage.cards.c.CeruleanDrake.class));
         cards.add(new SetCardInfo("Chandra's Embercat", 129, Rarity.COMMON, mage.cards.c.ChandrasEmbercat.class));
+        cards.add(new SetCardInfo("Chandra's Regulator", 131, Rarity.RARE, mage.cards.c.ChandrasRegulator.class));
         cards.add(new SetCardInfo("Chandra's Spitfire", 132, Rarity.UNCOMMON, mage.cards.c.ChandrasSpitfire.class));
         cards.add(new SetCardInfo("Chandra, Acolyte of Flame", 126, Rarity.RARE, mage.cards.c.ChandraAcolyteOfFlame.class));
         cards.add(new SetCardInfo("Chandra, Awakened Inferno", 127, Rarity.MYTHIC, mage.cards.c.ChandraAwakenedInferno.class));