Merge pull request #5047 from NoahGleason/mourners-shield

Implement Mourner's Shield

Mage.Sets/src/mage/cards/m/MournersShield.java

@@ -0,0 +1,170 @@
+package mage.cards.m;
+
+import java.util.UUID;
+
+import mage.MageObject;
+import mage.MageObjectReference;
+import mage.ObjectColor;
+import mage.abilities.Ability;
+import mage.abilities.common.EntersBattlefieldTriggeredAbility;
+import mage.abilities.common.SimpleActivatedAbility;
+import mage.abilities.costs.common.TapSourceCost;
+import mage.abilities.costs.mana.GenericManaCost;
+import mage.abilities.effects.OneShotEffect;
+import mage.abilities.effects.PreventionEffectImpl;
+import mage.abilities.effects.common.PreventDamageBySourceEffect;
+import mage.cards.Card;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.CardType;
+import mage.constants.Duration;
+import mage.constants.Outcome;
+import mage.constants.Zone;
+import mage.filter.FilterObject;
+import mage.filter.predicate.Predicate;
+import mage.filter.predicate.Predicates;
+import mage.filter.predicate.mageobject.ColorPredicate;
+import mage.filter.predicate.mageobject.ColorlessPredicate;
+import mage.filter.predicate.mageobject.SharesColorPredicate;
+import mage.game.ExileZone;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.permanent.Permanent;
+import mage.players.Player;
+import mage.target.TargetSource;
+import mage.target.common.TargetCardInGraveyard;
+import mage.util.CardUtil;
+
+/**
+ *
+ * @author noahg
+ */
+public final class MournersShield extends CardImpl {
+
+    public MournersShield(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ARTIFACT}, "{4}");
+        
+
+        // Imprint - When Mourner's Shield enters the battlefield, you may exile target card from a graveyard.
+        Ability ability = new EntersBattlefieldTriggeredAbility(new MournersShieldImprintEffect(), true, "Imprint — ");
+        ability.addTarget(new TargetCardInGraveyard());
+        this.addAbility(ability);
+
+        // {2}, {tap}: Prevent all damage that would be dealt this turn by a source of your choice that shares a color with the exiled card.
+        Ability preventAbility = new SimpleActivatedAbility(Zone.BATTLEFIELD, new MournersShieldEffect(), new GenericManaCost(2));
+        preventAbility.addCost(new TapSourceCost());
+        this.addAbility(preventAbility);
+    }
+
+    public MournersShield(final MournersShield card) {
+        super(card);
+    }
+
+    @Override
+    public MournersShield copy() {
+        return new MournersShield(this);
+    }
+}
+
+class MournersShieldImprintEffect extends OneShotEffect {
+
+    MournersShieldImprintEffect() {
+        super(Outcome.Exile);
+        this.staticText = "you may exile target card from a graveyard";
+    }
+
+    MournersShieldImprintEffect(final MournersShieldImprintEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public MournersShieldImprintEffect copy() {
+        return new MournersShieldImprintEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Player controller = game.getPlayer(source.getControllerId());
+        if (controller != null) {
+            Card card = game.getCard(this.getTargetPointer().getFirst(game, source));
+            if (card != null) {
+                controller.moveCardsToExile(card, source, game, true, CardUtil.getExileZoneId(game, source.getSourceId(), source.getSourceObjectZoneChangeCounter()), source.getSourceObject(game).getIdName());
+                Permanent sourcePermanent = game.getPermanent(source.getSourceId());
+                if (sourcePermanent != null) {
+                    sourcePermanent.imprint(this.getTargetPointer().getFirst(game, source), game);
+                }
+            }
+            return true;
+        }
+        return false;
+    }
+}
+
+class MournersShieldEffect extends PreventionEffectImpl {
+
+    private TargetSource target;
+    private MageObjectReference mageObjectReference;
+    private boolean noneExiled;
+
+    public MournersShieldEffect() {
+        super(Duration.EndOfTurn);
+        noneExiled = false;
+        this.staticText = "Prevent all damage that would be dealt this turn by a source of your choice that shares a color with the exiled card.";
+    }
+
+    public MournersShieldEffect(final MournersShieldEffect effect) {
+        super(effect);
+        if (effect.target != null) {
+            this.target = effect.target.copy();
+        } else {
+            this.target = null;
+        }
+        this.mageObjectReference = effect.mageObjectReference;
+        this.noneExiled = effect.noneExiled;
+    }
+
+    @Override
+    public MournersShieldEffect copy() {
+        return new MournersShieldEffect(this);
+    }
+
+    @Override
+    public void init(Ability source, Game game) {
+        ObjectColor colorsAmongImprinted = new ObjectColor();
+        Permanent sourceObject = game.getPermanent(source.getSourceId());
+        ExileZone exileZone = game.getExile().getExileZone(CardUtil.getCardExileZoneId(game, source.getSourceId()));
+        if (sourceObject == null || sourceObject.getImprinted() == null) {
+            noneExiled = true;
+            return;
+        }
+        for (UUID imprinted : sourceObject.getImprinted()){
+            if (imprinted != null && exileZone.contains(imprinted)){
+                Card card = game.getCard(imprinted);
+                if (card != null) {
+                    colorsAmongImprinted = colorsAmongImprinted.union(card.getColor(game));
+                }
+            }
+        }
+        FilterObject filterObject = new FilterObject("a source of your choice that shares a color with the exiled card");
+        filterObject.add(new SharesColorPredicate(colorsAmongImprinted));
+        this.target = new TargetSource(filterObject);
+        this.target.choose(Outcome.PreventDamage, source.getControllerId(), source.getSourceId(), game);
+        if (target.getFirstTarget() != null) {
+            mageObjectReference = new MageObjectReference(target.getFirstTarget(), game);
+        } else {
+            mageObjectReference = null;
+        }
+    }
+
+    @Override
+    public boolean applies(GameEvent event, Ability source, Game game) {
+        if (noneExiled || mageObjectReference == null){
+            return false;
+        }
+        if (super.applies(event, source, game)) {
+            MageObject mageObject = game.getObject(event.getSourceId());
+            return mageObjectReference.refersTo(mageObject, game);
+        }
+        return false;
+    }
+}

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

@@ -176,6 +176,7 @@ public final class Mirrodin extends ExpansionSet {
         cards.add(new SetCardInfo("Mountain", 300, Rarity.LAND, mage.cards.basiclands.Mountain.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Mountain", 301, Rarity.LAND, mage.cards.basiclands.Mountain.class, NON_FULL_USE_VARIOUS));
         cards.add(new SetCardInfo("Mountain", 302, Rarity.LAND, mage.cards.basiclands.Mountain.class, NON_FULL_USE_VARIOUS));
+        cards.add(new SetCardInfo("Mourner's Shield", 209, Rarity.UNCOMMON, mage.cards.m.MournersShield.class));
         cards.add(new SetCardInfo("Myr Adapter", 210, Rarity.COMMON, mage.cards.m.MyrAdapter.class));
         cards.add(new SetCardInfo("Myr Enforcer", 211, Rarity.COMMON, mage.cards.m.MyrEnforcer.class));
         cards.add(new SetCardInfo("Myr Incubator", 212, Rarity.RARE, mage.cards.m.MyrIncubator.class));

Mage/src/main/java/mage/filter/predicate/mageobject/SharesColorPredicate.java

@@ -0,0 +1,39 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+
+package mage.filter.predicate.mageobject;
+
+import mage.MageObject;
+import mage.ObjectColor;
+import mage.filter.predicate.ObjectSourcePlayer;
+import mage.filter.predicate.ObjectSourcePlayerPredicate;
+import mage.filter.predicate.Predicate;
+import mage.game.Game;
+
+/**
+ *
+ * @author noahg
+ */
+
+public class SharesColorPredicate implements Predicate<MageObject> {
+
+    private final ObjectColor color;
+
+    public SharesColorPredicate(ObjectColor color) {
+        this.color = color;
+    }
+
+    @Override
+    public boolean apply(MageObject input, Game game) {
+        return color != null && input.getColor(game).shares(color);
+
+    }
+
+    @Override
+    public String toString() {
+        return "shares a color";
+    }
+}