Implement Heraldic Banner

Mage.Sets/src/mage/cards/h/HeraldicBanner.java

@@ -0,0 +1,83 @@
+package mage.cards.h;
+
+import mage.ObjectColor;
+import mage.abilities.Ability;
+import mage.abilities.common.AsEntersBattlefieldAbility;
+import mage.abilities.common.SimpleStaticAbility;
+import mage.abilities.costs.common.TapSourceCost;
+import mage.abilities.effects.ContinuousEffectImpl;
+import mage.abilities.effects.common.ChooseColorEffect;
+import mage.abilities.effects.mana.AddManaChosenColorEffect;
+import mage.abilities.mana.SimpleManaAbility;
+import mage.cards.CardImpl;
+import mage.cards.CardSetInfo;
+import mage.constants.*;
+import mage.filter.common.FilterCreaturePermanent;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+
+import java.util.UUID;
+
+/**
+ * @author jmharmon
+ */
+
+public final class HeraldicBanner extends CardImpl {
+
+    public HeraldicBanner(UUID ownerId, CardSetInfo setInfo) {
+        super(ownerId, setInfo, new CardType[]{CardType.ARTIFACT}, "{3}");
+
+        // As Heraldic Banner enters the battlefield, choose a color.
+        this.addAbility(new AsEntersBattlefieldAbility(new ChooseColorEffect(Outcome.Benefit)));
+
+        // Creatures you control of the chosen color get +1/+0.
+        this.addAbility(new SimpleStaticAbility(Zone.BATTLEFIELD, new HeraldicBannerEffect()));
+
+        // {T}: Add one mana of the chosen color.
+        this.addAbility(new SimpleManaAbility(Zone.BATTLEFIELD, new AddManaChosenColorEffect(), new TapSourceCost()));
+    }
+
+    public HeraldicBanner(final HeraldicBanner card) {
+        super(card);
+    }
+
+    @Override
+    public HeraldicBanner copy() {
+        return new HeraldicBanner(this);
+    }
+}
+
+class HeraldicBannerEffect extends ContinuousEffectImpl {
+
+    private static final FilterCreaturePermanent filter = new FilterCreaturePermanent();
+
+    public HeraldicBannerEffect() {
+        super(Duration.WhileOnBattlefield, Layer.PTChangingEffects_7, SubLayer.ModifyPT_7c, Outcome.BoostCreature);
+        staticText = "Creatures you control of the chosen color get +1/+0";
+    }
+
+    public HeraldicBannerEffect(final HeraldicBannerEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public HeraldicBannerEffect copy() {
+        return new HeraldicBannerEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Permanent permanent = game.getPermanent(source.getSourceId());
+        if (permanent != null) {
+            ObjectColor color = (ObjectColor) game.getState().getValue(permanent.getId() + "_color");
+            if (color != null) {
+                for (Permanent perm : game.getBattlefield().getActivePermanents(filter, source.getControllerId(), game)) {
+                    if (perm.getColor(game).contains(color)) {
+                        perm.addPower(1);
+                    }
+                }
+            }
+        }
+        return true;
+    }
+}