[OTJ] Implement Vengeful Townsfolk

Mage/src/main/java/mage/abilities/common/DiesOneOrMoreCreatureTriggeredAbility.java

@@ -0,0 +1,62 @@
+package mage.abilities.common;
+
+import mage.MageObject;
+import mage.abilities.TriggeredAbilityImpl;
+import mage.abilities.effects.Effect;
+import mage.constants.Zone;
+import mage.filter.common.FilterCreaturePermanent;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.events.ZoneChangeBatchEvent;
+import mage.game.events.ZoneChangeEvent;
+
+import java.util.Objects;
+
+/**
+ * @author Susucr
+ */
+public class DiesOneOrMoreCreatureTriggeredAbility extends TriggeredAbilityImpl {
+
+    private final FilterCreaturePermanent filter;
+
+    public DiesOneOrMoreCreatureTriggeredAbility(Effect effect, FilterCreaturePermanent filter) {
+        super(Zone.BATTLEFIELD, effect, false);
+        this.filter = filter;
+        this.setTriggerPhrase("Whenever one or more " + filter.getMessage() + " die,");
+    }
+
+    private DiesOneOrMoreCreatureTriggeredAbility(final DiesOneOrMoreCreatureTriggeredAbility ability) {
+        super(ability);
+        this.filter = ability.filter;
+    }
+
+    @Override
+    public DiesOneOrMoreCreatureTriggeredAbility copy() {
+        return new DiesOneOrMoreCreatureTriggeredAbility(this);
+    }
+
+    @Override
+    public boolean checkEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.ZONE_CHANGE_BATCH;
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        return ((ZoneChangeBatchEvent) event)
+                .getEvents()
+                .stream()
+                .filter(ZoneChangeEvent::isDiesEvent)
+                .map(ZoneChangeEvent::getTargetId)
+                .map(game::getPermanentOrLKIBattlefield)
+                .filter(Objects::nonNull)
+                .anyMatch(p -> filter.match(p, getControllerId(), this, game));
+    }
+
+    @Override
+    public boolean isInUseableZone(Game game, MageObject source, GameEvent event) {
+        return ((ZoneChangeBatchEvent) event)
+                .getEvents()
+                .stream()
+                .allMatch(e -> TriggeredAbilityImpl.isInUseableZoneDiesTrigger(this, e, game));
+    }
+}