implement [WHO] River Song

Mage.Sets/src/mage/cards/r/RiverSong.java

@@ -0,0 +1,134 @@
+package mage.cards.r;
+
+import mage.MageInt;
+import mage.abilities.Ability;
+import mage.abilities.TriggeredAbility;
+import mage.abilities.TriggeredAbilityImpl;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.dynamicvalue.common.SourcePermanentPowerCount;
+import mage.abilities.effects.Effect;
+import mage.abilities.effects.ReplacementEffectImpl;
+import mage.abilities.effects.common.DamageTargetEffect;
+import mage.abilities.effects.common.counter.AddCountersSourceEffect;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.counters.CounterType;
+import mage.game.Game;
+import mage.game.events.DrawCardEvent;
+import mage.game.events.GameEvent;
+import mage.players.Player;
+import mage.target.targetpointer.FixedTarget;
+
+import java.util.UUID;
+
+/**
+ * @author xenohedron
+ */
+public final class RiverSong extends CardImpl {
+
+    public RiverSong(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.CREATURE}, "{1}{U}{R}");
+
+        this.supertype.add(SuperType.LEGENDARY);
+        this.subtype.add(SubType.HUMAN);
+        this.subtype.add(SubType.TIME_LORD);
+        this.subtype.add(SubType.ROGUE);
+        this.power = new MageInt(2);
+        this.toughness = new MageInt(2);
+
+        // Meet in Reverse -- You draw cards from the bottom of your library rather than the top.
+        this.addAbility(new SimpleStaticAbility(new RiverSongDrawFromBottomReplacementEffect())
+                .withFlavorWord("Meet in Reverse"));
+
+        // Spoilers -- Whenever an opponent scries, surveils, or searches their library, put a +1/+1 counter on River Song.
+        // Then River Song deals damage to that player equal to its power.
+        TriggeredAbility trigger = new RiverSongTriggeredAbility(new AddCountersSourceEffect(CounterType.P1P1.createInstance()));
+        trigger.addEffect(new DamageTargetEffect(new SourcePermanentPowerCount(false))
+                .setText("Then {this} deals damage to that player equal to its power"));
+        this.addAbility(trigger.withFlavorWord("Spoilers"));
+    }
+
+    private RiverSong(final RiverSong card) {
+        super(card);
+    }
+
+    @Override
+    public RiverSong copy() {
+        return new RiverSong(this);
+    }
+}
+
+class RiverSongDrawFromBottomReplacementEffect extends ReplacementEffectImpl {
+
+    RiverSongDrawFromBottomReplacementEffect() {
+        super(Duration.WhileOnBattlefield, Outcome.Neutral);
+        staticText = "You draw cards from the bottom of your library rather than the top";
+    }
+
+    private RiverSongDrawFromBottomReplacementEffect(final RiverSongDrawFromBottomReplacementEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public RiverSongDrawFromBottomReplacementEffect copy() {
+        return new RiverSongDrawFromBottomReplacementEffect(this);
+    }
+
+    @Override
+    public boolean replaceEvent(GameEvent event, Ability source, Game game) {
+        ((DrawCardEvent) event).setFromBottom(true);
+        return false;
+    }
+
+    @Override
+    public boolean checksEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.DRAW_CARD;
+    }
+
+    @Override
+    public boolean applies(GameEvent event, Ability source, Game game) {
+        return source.getControllerId().equals(event.getPlayerId());
+    }
+}
+
+class RiverSongTriggeredAbility extends TriggeredAbilityImpl {
+
+    RiverSongTriggeredAbility(Effect effect) {
+        super(Zone.BATTLEFIELD, effect);
+        setTriggerPhrase("Whenever an opponent scries, surveils, or searches their library, ");
+    }
+
+    private RiverSongTriggeredAbility(final RiverSongTriggeredAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public RiverSongTriggeredAbility copy() {
+        return new RiverSongTriggeredAbility(this);
+    }
+
+    @Override
+    public boolean checkEventType(GameEvent event, Game game) {
+        switch (event.getType()) {
+            case SCRIED:
+            case SURVEILED:
+            case LIBRARY_SEARCHED:
+                return true;
+            default:
+                return false;
+        }
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        Player controller = game.getPlayer(getControllerId());
+        if (controller != null
+                && controller.hasOpponent(event.getPlayerId(), game)
+                && event.getPlayerId().equals(event.getTargetId())) { // searches own library
+            getEffects().setTargetPointer(new FixedTarget(event.getPlayerId()));
+            return true;
+        }
+        return false;
+    }
+}

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

@@ -178,6 +178,7 @@ private DoctorWho() {
         cards.add(new SetCardInfo("Return the Past", 92, Rarity.RARE, mage.cards.r.ReturnThePast.class));
         cards.add(new SetCardInfo("Return to Dust", 211, Rarity.UNCOMMON, mage.cards.r.ReturnToDust.class));
         cards.add(new SetCardInfo("Reverse the Polarity", 54, Rarity.RARE, mage.cards.r.ReverseThePolarity.class));
+        cards.add(new SetCardInfo("River Song", 152, Rarity.RARE, mage.cards.r.RiverSong.class));
         cards.add(new SetCardInfo("River of Tears", 297, Rarity.RARE, mage.cards.r.RiverOfTears.class));
         cards.add(new SetCardInfo("Rockfall Vale", 298, Rarity.RARE, mage.cards.r.RockfallVale.class));
         cards.add(new SetCardInfo("Rogue's Passage", 299, Rarity.UNCOMMON, mage.cards.r.RoguesPassage.class));

Mage/src/main/java/mage/game/events/DrawCardEvent.java

@@ -9,6 +9,8 @@
  */
 public class DrawCardEvent extends GameEvent {
 
+    private boolean fromBottom = false; // for replacement effects that draw from bottom of library instead
+
     public DrawCardEvent(UUID playerId, Ability source, GameEvent originalDrawEvent) {
         super(GameEvent.EventType.DRAW_CARD, playerId, null, playerId, 0, false);
 
@@ -22,4 +24,13 @@ public DrawCardEvent(UUID playerId, Ability source, GameEvent originalDrawEvent)
             this.addAppliedEffects(originalDrawEvent.getAppliedEffects());
         }
     }
+
+    public void setFromBottom(boolean fromBottom) {
+        this.fromBottom = fromBottom;
+    }
+
+    public boolean isFromBottom() {
+        return fromBottom;
+    }
+
 }

Mage/src/main/java/mage/players/PlayerImpl.java

@@ -81,7 +81,7 @@ public abstract class PlayerImpl implements Player, Serializable {
     /**
      * During some steps we can't play anything
      */
-    final static Map<PhaseStep, Step.StepPart> SILENT_PHASES_STEPS = ImmutableMap.<PhaseStep, Step.StepPart>builder().
+    static final Map<PhaseStep, Step.StepPart> SILENT_PHASES_STEPS = ImmutableMap.<PhaseStep, Step.StepPart>builder().
             put(PhaseStep.DECLARE_ATTACKERS, Step.StepPart.PRE).build();
 
     /**
@@ -754,10 +754,11 @@ public int drawCards(int num, Ability source, Game game, GameEvent event) {
         }
         int numDrawn = 0;
         for (int i = 0; i < num; i++) {
-            if (game.replaceEvent(new DrawCardEvent(getId(), source, event))) {
+            DrawCardEvent drawCardEvent = new DrawCardEvent(getId(), source, event);
+            if (game.replaceEvent(drawCardEvent)) {
                 continue;
             }
-            Card card = getLibrary().drawFromTop(game);
+            Card card = drawCardEvent.isFromBottom() ? getLibrary().drawFromBottom(game) : getLibrary().drawFromTop(game);
             if (card != null) {
                 card.moveToZone(Zone.HAND, source, game, false); // if you want to use event.getSourceId() here then thinks x10 times
                 if (isTopCardRevealed()) {