Added Extort ability.

Mage/src/mage/abilities/keyword/ExtortAbility.java

@@ -0,0 +1,112 @@
+/*
+* Copyright 2010 BetaSteward_at_googlemail.com. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without modification, are
+* permitted provided that the following conditions are met:
+*
+*    1. Redistributions of source code must retain the above copyright notice, this list of
+*       conditions and the following disclaimer.
+*
+*    2. Redistributions in binary form must reproduce the above copyright notice, this list
+*       of conditions and the following disclaimer in the documentation and/or other materials
+*       provided with the distribution.
+*
+* THIS SOFTWARE IS PROVIDED BY BetaSteward_at_googlemail.com ``AS IS'' AND ANY EXPRESS OR IMPLIED
+* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL BetaSteward_at_googlemail.com OR
+* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+* ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
+* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*
+* The views and conclusions contained in the software and documentation are those of the
+* authors and should not be interpreted as representing official policies, either expressed
+* or implied, of BetaSteward_at_googlemail.com.
+*/
+
+package mage.abilities.keyword;
+
+import java.util.UUID;
+import mage.Constants;
+import mage.Constants.Zone;
+import mage.abilities.Ability;
+import mage.abilities.TriggeredAbilityImpl;
+import mage.abilities.costs.mana.ManaCostsImpl;
+import mage.abilities.effects.OneShotEffect;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+import mage.game.permanent.Permanent;
+import mage.players.Player;
+
+/**
+ *
+ * @author LevelX2
+ */
+public class ExtortAbility extends TriggeredAbilityImpl<ExtortAbility> {
+
+    public ExtortAbility() {
+        super(Zone.BATTLEFIELD, new ExtortEffect(), false);
+        this.costs.add(new ManaCostsImpl("{W/B}"));
+    }
+
+    public ExtortAbility(final ExtortAbility ability) {
+        super(ability);
+    }
+
+    @Override
+    public boolean checkTrigger(GameEvent event, Game game) {
+        if (event.getType() == GameEvent.EventType.SPELL_CAST && event.getPlayerId().equals(this.getControllerId())) {
+            Player player = game.getPlayer(this.getControllerId());
+            Permanent sourcePerm = game.getPermanent(sourceId);
+            if (player != null && sourcePerm != null &&
+                player.chooseUse(Constants.Outcome.Damage, new StringBuilder("Extort opponents? (").append(sourcePerm.getName()).append(")").toString(), game)) {
+                return true;
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public String getRule() {
+        return "Extort <i>(Whenever you cast a spell, you may pay {WB}. If you do, each opponent loses 1 life and you gain that much life.)</i>";
+    }
+
+    @Override
+    public ExtortAbility copy() {
+        return new ExtortAbility(this);
+    }
+}
+
+class ExtortEffect extends OneShotEffect<ExtortEffect> {
+    public ExtortEffect() {
+        super(Constants.Outcome.Damage);
+        staticText = "each opponent loses 1 life and you gain that much life";
+    }
+
+    public ExtortEffect(final ExtortEffect effect) {
+        super(effect);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        int loseLife = 0;
+        for (UUID opponentId : game.getOpponents(source.getControllerId())) {
+            loseLife += game.getPlayer(opponentId).loseLife(1, game);
+        }
+        if (loseLife > 0) {
+            game.getPlayer(source.getControllerId()).gainLife(loseLife, game);
+        }
+        Permanent permanent = game.getPermanent(source.getSourceId());
+        if (permanent != null) {
+            game.informPlayers(new StringBuilder(permanent.getName()).append(" extorted opponents ").append(loseLife).append(" life").toString());
+        }
+        return true;
+    }
+
+    @Override
+    public ExtortEffect copy() {
+        return new ExtortEffect(this);
+    }
+}