Fixed some bugs and added a AI Test player class.

Mage.Client/release/sample-decks/Commander/Tasigur BGU.dck

@@ -0,0 +1,97 @@
+1 [MMQ:316] Dust Bowl
+1 [MBS:43] Go for the Throat
+1 [ALL:42] Force of Will
+1 [ZEN:220] Misty Rainforest
+1 [10E:361] Treetop Village
+1 [10E:362] Underground River
+1 [ROE:115] Inquisition of Kozilek
+1 [STH:137] Volrath's Stronghold
+1 [PLC:85] Damnation
+1 [FUT:173] Tolaria West
+1 [ISD:78] Snapcaster Mage
+1 [ZEN:67] Spell Pierce
+1 [ZEN:229] Verdant Catacombs
+1 [M11:70] Preordain
+1 [C13:177] Baleful Strix
+1 [ZEN:223] Scalding Tarn
+1 [MBS:138] Sword of Feast and Famine
+1 [NPH:57] Dismember
+1 [TMP:58] Dismiss
+1 [INV:57] Fact or Fiction
+1 [DGM:93] Putrefy
+1 [ONS:320] Lonely Sandbar
+1 [GTC:240] Breeding Pool
+1 [DTK:262] Forest
+1 [ISD:105] Liliana of the Veil
+1 [TMP:340] Wasteland
+1 [JUD:46] Mental Note
+1 [ULG:36] Miscalculation
+2 [CSP:152] Snow-Covered Island
+1 [RAV:63] Remand
+1 [LRW:56] Cryptic Command
+1 [3ED:283] Bayou
+1 [5ED:191] Sylvan Library
+1 [CMD:269] Command Tower
+1 [EXO:35] Forbid
+1 [DDO:36] AEtherize
+1 [KTK:36] Dig Through Time
+1 [RTR:141] Abrupt Decay
+1 [SHM:280] Sunken Ruins
+1 [DIS:33] Spell Snare
+1 [ARB:92] Maelstrom Pulse
+1 [KTK:81] Murderous Cut
+1 [TSP:48] Ancestral Vision
+1 [TMP:22] Diabolic Edict
+1 [10E:319] Crucible of Worlds
+1 [M12:63] Mana Leak
+1 [FUT:52] Logic Knot
+1 [CHK:268] Sensei's Divining Top
+1 [THS:225] Temple of Deceit
+1 [ODY:317] Cephalid Coliseum
+1 [WWK:145] Tectonic Edge
+1 [EVE:41] Raven's Crime
+1 [C13:96] Toxic Deluge
+1 [9ED:152] Phyrexian Arena
+1 [KTK:248] Windswept Heath
+1 [KTK:204] Sultai Charm
+1 [KTK:249] Wooded Foothills
+1 [M13:223] Drowned Catacomb
+1 [RAV:172] Life from the Loam
+1 [THS:107] Thoughtseize
+1 [MMQ:61] Brainstorm
+1 [M15:244] Llanowar Wastes
+1 [ISD:55] Forbidden Alchemy
+1 [APC:114] Pernicious Deed
+1 [RTR:243] Overgrown Tomb
+1 [7ED:76] Force Spike
+1 [TMP:70] Intuition
+1 [3ED:305] Underground Sea
+1 [M15:248] Urborg, Tomb of Yawgmoth
+1 [AVR:226] Cavern of Souls
+1 [ISD:241] Hinterland Harbor
+1 [DKA:52] Thought Scour
+1 [3ED:303] Tropical Island
+1 [3ED:13] Demonic Tutor
+1 [ISD:249] Woodland Cemetery
+1 [M12:73] Ponder
+1 [DTK:65] Negate
+1 [RAV:82] Darkblast
+1 [WWK:134] Creeping Tar Pit
+1 [GTC:249] Watery Grave
+1 [WWK:132] Bojuka Bog
+1 [KTK:239] Polluted Delta
+1 [KTK:233] Flooded Strand
+1 [KTK:59] Treasure Cruise
+1 [TSP:202] Krosan Grip
+1 [7ED:67] Counterspell
+1 [MIR:80] Mystical Tutor
+1 [MOR:55] Vendilion Clique
+1 [TSP:69] Mystical Teachings
+1 [KTK:230] Bloodstained Mire
+1 [ZEN:219] Marsh Flats
+1 [DTK:256] Swamp
+1 [THS:90] Hero's Downfall
+3 [DTK:253] Island
+1 [WWK:31] Jace, the Mind Sculptor
+1 [DTK:98] Duress
+SB: 1 [FRF:87] Tasigur, the Golden Fang

Mage.Server.Plugins/Mage.Player.AI.MA/src/mage/player/ai/ComputerPlayer7.java

@@ -84,6 +84,7 @@ public class ComputerPlayer7 extends ComputerPlayer6 {
 
     public ComputerPlayer7(final ComputerPlayer7 player) {
         super(player);
+        this.allowBadMoves = player.allowBadMoves;
     }
 
     @Override

Mage.Server.Plugins/Mage.Player.AI/src/main/java/mage/player/ai/ComputerPlayer.java

@@ -1595,7 +1595,7 @@ public class ComputerPlayer extends PlayerImpl implements Player {
     }
 
     @Override
-    protected List<Permanent> getAvailableManaProducers(Game game) {
+    public List<Permanent> getAvailableManaProducers(Game game) {
         return super.getAvailableManaProducers(game);
     }
 

Mage.Server.Plugins/Mage.Player.Human/src/mage/player/human/HumanPlayer.java

@@ -1038,6 +1038,12 @@ public class HumanPlayer extends PlayerImpl {
         }
     }
 
+    @Override
+    public boolean activateAbility(ActivatedAbility ability, Game game) {
+        getManaPool().setStock(); // needed for the "mana already in the pool has to be used manually" option
+        return super.activateAbility(ability, game); 
+    }
+
     protected void activateAbility(LinkedHashMap<UUID, ? extends ActivatedAbility> abilities, MageObject object, Game game) {
         updateGameStatePriority("activateAbility", game);
         if (abilities.size() == 1 && suppressAbilityPicker(abilities.values().iterator().next())) {

Mage.Sets/src/mage/sets/avacynrestored/DevoutChaplain.java

@@ -78,7 +78,7 @@ public class DevoutChaplain extends CardImpl {
         this.power = new MageInt(2);
         this.toughness = new MageInt(2);
 
-        // {tap}, Tap two untapped Humans you control: Exile target artifact or enchantment.
+        // {T}, Tap two untapped Humans you control: Exile target artifact or enchantment.
         Ability ability = new SimpleActivatedAbility(Zone.BATTLEFIELD, new ExileTargetEffect(), new TapSourceCost());
         ability.addCost(new TapTargetCost(new TargetControlledPermanent(2, 2, humanFilter, false)));
         ability.addTarget(new TargetPermanent(filter));

Mage.Sets/src/mage/sets/commander/SewerNemesis.java

@@ -102,11 +102,11 @@ class SewerNemesisChoosePlayerEffect extends OneShotEffect {
         Player player = game.getPlayer(source.getControllerId());
         Permanent permanent = game.getPermanent(source.getSourceId());
         if (player != null && permanent != null) {
-            TargetPlayer target = new TargetPlayer();
+            TargetPlayer target = new TargetPlayer(1,1,true);
             if (player.choose(this.outcome, target, source.getSourceId(), game)) {
                 Player chosenPlayer = game.getPlayer(target.getFirstTarget());
                 if (chosenPlayer != null) {
-                    game.informPlayers(permanent.getName() + ": " + player.getLogName() + " has chosen " + chosenPlayer.getLogName());
+                    game.informPlayers(permanent.getLogName() + ": " + player.getLogName() + " has chosen " + chosenPlayer.getLogName());
                     game.getState().setValue(permanent.getId() + "_player", target.getFirstTarget());
                     return true;
                 }

Mage.Sets/src/mage/sets/newphyrexia/SheoldredWhisperingOne.java

@@ -58,10 +58,16 @@ public class SheoldredWhisperingOne extends CardImpl {
 
         this.power = new MageInt(6);
         this.toughness = new MageInt(6);
+
+        // Swampwalk
         this.addAbility(new SwampwalkAbility());
+
+        // At the beginning of your upkeep, return target creature card from your graveyard to the battlefield.
         Ability ability = new BeginningOfUpkeepTriggeredAbility(new ReturnFromGraveyardToBattlefieldTargetEffect(false), TargetController.YOU, false);
         ability.addTarget(new TargetCardInYourGraveyard(new FilterCreatureCard("creature card from your graveyard")));
         this.addAbility(ability);
+
+        // At the beginning of each opponent's upkeep, that player sacrifices a creature.
         ability = new BeginningOfUpkeepTriggeredAbility(new SacrificeEffect(new FilterCreaturePermanent(), 1, "that player "), TargetController.OPPONENT, false);
         this.addAbility(ability);
     }

Mage.Sets/src/mage/sets/tempest/DiabolicEdict.java

@@ -45,6 +45,7 @@ public class DiabolicEdict extends CardImpl {
         super(ownerId, 22, "Diabolic Edict", Rarity.COMMON, new CardType[]{CardType.INSTANT}, "{1}{B}");
         this.expansionSetCode = "TMP";
 
+        // Target player sacrifices a creature.
         this.getSpellAbility().addEffect(new SacrificeEffect(new FilterCreaturePermanent(), 1, "Target player"));
         this.getSpellAbility().addTarget(new TargetPlayer());
     }

Mage.Tests/src/test/java/org/mage/test/AI/basic/CastCreaturesTest.java

@@ -0,0 +1,54 @@
+/*
+ *  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 org.mage.test.AI.basic;
+
+import mage.constants.PhaseStep;
+import mage.constants.Zone;
+import org.junit.Test;
+import org.mage.test.serverside.base.CardTestPlayerBaseAI;
+
+/**
+ *
+ * @author LevelX2
+ */
+public class CastCreaturesTest extends CardTestPlayerBaseAI {
+
+    /**
+     * Tests that the creature is cast if enough mana is available
+     */
+    @Test
+    public void testSimpleCast() {
+        addCard(Zone.HAND, playerA, "Silvercoat Lion");
+        addCard(Zone.BATTLEFIELD, playerA, "Plains", 2);
+
+        setStopAt(1, PhaseStep.BEGIN_COMBAT);
+        execute();
+
+        assertPermanentCount(playerA, "Silvercoat Lion", 1);
+    }
+}

Mage.Tests/src/test/java/org/mage/test/cards/dynamicvalue/SewerNemesisTest.java

@@ -41,12 +41,16 @@ public class SewerNemesisTest extends CardTestPlayerBase {
 
 
     /**
-     * Sewer Nemesis count's all cards in each player's graveyard to determine it's * / *, not just the cosen player's graveyard.
+     * BUG: Sewer Nemesis count's all cards in each player's graveyard to determine it's * / *, not just the chosen player's graveyard.
      *
     */
     @Test
     public void test1() {
         addCard(Zone.BATTLEFIELD, playerA, "Swamp", 4);
+
+        // As Sewer Nemesis enters the battlefield, choose a player.
+        // Sewer Nemesis's power and toughness are each equal to the number of cards in the chosen player's graveyard.
+        // Whenever the chosen player casts a spell, that player puts the top card of his or her library into his or her graveyard.
         addCard(Zone.HAND, playerA, "Sewer Nemesis");
 
         addCard(Zone.GRAVEYARD, playerA, "Raging Goblin",4);

Mage.Tests/src/test/java/org/mage/test/cards/replacement/SigardaHostOfHeronsTest.java

@@ -18,18 +18,25 @@ public class SigardaHostOfHeronsTest extends CardTestPlayerBase {
      */
     @Test
     public void testCard() {
+        // Spells and abilities your opponents control can't cause you to sacrifice permanents.
         addCard(Zone.BATTLEFIELD, playerA, "Sigarda, Host of Herons");
+        // {T}, Tap two untapped Humans you control: Exile target artifact or enchantment.
         addCard(Zone.BATTLEFIELD, playerA, "Devout Chaplain");
+        // {2}{B}, Sacrifice a creature: Target opponent reveals his or her hand. You choose a card from it. That player discards that card. Activate this ability only any time you could cast a sorcery.
         addCard(Zone.BATTLEFIELD, playerA, "Corpse Traders");
+        // Target player sacrifices a creature.
         addCard(Zone.HAND, playerA, "Diabolic Edict");
         addCard(Zone.BATTLEFIELD, playerA, "Swamp", 2);
         
         addCard(Zone.HAND, playerB, "Diabolic Edict");
         addCard(Zone.BATTLEFIELD, playerB, "Swamp", 2);
+
+        // At the beginning of your upkeep, return target creature card from your graveyard to the battlefield.
+        // At the beginning of each opponent's upkeep, that player sacrifices a creature.
         addCard(Zone.BATTLEFIELD, playerB, "Sheoldred, Whispering One");
 
-        castSpell(2, PhaseStep.PRECOMBAT_MAIN, playerB, "Diabolic Edict", playerA);
+        castSpell(2, PhaseStep.PRECOMBAT_MAIN, playerB, "Diabolic Edict", playerA); // sacrificing for player A prevented by Sigarda
-        castSpell(3, PhaseStep.PRECOMBAT_MAIN, playerA, "Diabolic Edict", playerB);
+        castSpell(3, PhaseStep.PRECOMBAT_MAIN, playerA, "Diabolic Edict", playerB); // playerB has to sacrifice Sheldred
 
         setStopAt(3, PhaseStep.END_TURN);
         execute();
@@ -40,9 +47,13 @@ public class SigardaHostOfHeronsTest extends CardTestPlayerBase {
         assertPermanentCount(playerA, "Sigarda, Host of Herons", 1);
         assertPermanentCount(playerA, "Devout Chaplain", 1);
         assertPermanentCount(playerA, "Corpse Traders", 1);
+        assertGraveyardCount(playerA, "Diabolic Edict", 1);
         assertGraveyardCount(playerA, 1);
 
         assertPermanentCount(playerB, "Sheoldred, Whispering One", 0);
+        assertHandCount(playerB, "Diabolic Edict", 0);
+        assertGraveyardCount(playerB, "Sheoldred, Whispering One", 1);
+        assertGraveyardCount(playerB, "Diabolic Edict", 1);
         assertGraveyardCount(playerB, 2);
     }
 

Mage.Tests/src/test/java/org/mage/test/player/RandomPlayer.java

@@ -102,16 +102,18 @@ public class RandomPlayer extends ComputerPlayer {
         List<Ability> playables = getPlayableAbilities(game);
         Ability ability;
         while (true) {
-            if (playables.size() == 1)
+            if (playables.size() == 1) {
                 ability = playables.get(0);
-            else
+            } else {
                 ability = playables.get(rnd.nextInt(playables.size()));
+            }
             List<Ability> options = getPlayableOptions(ability, game);
             if (!options.isEmpty()) {
-                if (options.size() == 1)
+                if (options.size() == 1) {
                     ability = options.get(0);
-                else
+                } else {
                     ability = options.get(rnd.nextInt(options.size()));
+                }
             }
             if (ability.getManaCosts().getVariableCosts().size() > 0) {
                 int amount = getAvailableManaProducers(game).size() - ability.getManaCosts().convertedManaCost();
@@ -154,10 +156,11 @@ public class RandomPlayer extends ComputerPlayer {
                 ability = source;
             }
             else {
-                if (options.size() == 1)
+                if (options.size() == 1) {
                     ability = options.get(0);
-                else
+                } else {
                     ability = options.get(rnd.nextInt(options.size()));
+                }
             }
             if (ability.isUsesStack()) {
                 game.getStack().push(new StackAbility(ability, playerId));
@@ -203,15 +206,18 @@ public class RandomPlayer extends ComputerPlayer {
     @Override
     public void selectBlockers(Game game, UUID defendingPlayerId) {
         int numGroups = game.getCombat().getGroups().size();
-        if (numGroups == 0) return;
+        if (numGroups == 0) {
+            return;
+        }
 
         List<Permanent> blockers = getAvailableBlockers(game);
         for (Permanent blocker: blockers) {
             int check = rnd.nextInt(numGroups + 1);
             if (check < numGroups) {
                 CombatGroup group = game.getCombat().getGroups().get(check);
-                if (group.getAttackers().size() > 0)
+                if (group.getAttackers().size() > 0) {
                     this.declareBlocker(this.getId(), blocker.getId(), group.getAttackers().get(0), game);
+                }
             }
         }
         actionCount++;
@@ -243,8 +249,9 @@ public class RandomPlayer extends ComputerPlayer {
 
     protected boolean chooseRandomTarget(Target target, Ability source, Game game) {
         Set<UUID> possibleTargets = target.possibleTargets(source==null?null:source.getSourceId(), playerId, game);
-        if (possibleTargets.isEmpty())
+        if (possibleTargets.isEmpty()) {
             return false;
+        }
         if (!target.isRequired(source)) {
             if (rnd.nextInt(possibleTargets.size() + 1) == 0) {
                 return false;
@@ -300,8 +307,9 @@ public class RandomPlayer extends ComputerPlayer {
 
     @Override
     public boolean chooseTarget(Outcome outcome, Cards cards, TargetCard target, Ability source, Game game) {
-        if (cards.isEmpty())
+        if (cards.isEmpty()) {
             return !target.isRequired(source);
+        }
         Card card = cards.getRandom(game);
         target.addTarget(card.getId(), source, game);
         return true;
@@ -373,8 +381,9 @@ public class RandomPlayer extends ComputerPlayer {
     public Mode chooseMode(Modes modes, Ability source, Game game) {
         Iterator<Mode> it = modes.values().iterator();
         Mode mode = it.next();
-        if (modes.size() == 1)
+        if (modes.size() == 1) {
             return mode;
+        }
         int modeNum = rnd.nextInt(modes.values().size());
         for (int i = 0; i < modeNum; i++) {
             mode = it.next();

Mage.Tests/src/test/java/org/mage/test/serverside/base/CardTestAPI.java

@@ -1,13 +1,14 @@
 package org.mage.test.serverside.base;
 
-import mage.constants.PhaseStep;
+import java.util.List;
 import mage.abilities.Ability;
+import mage.constants.PhaseStep;
 import mage.constants.Zone;
 import mage.filter.Filter;
 import mage.players.Player;
 import org.mage.test.player.TestPlayer;
 
-import java.util.List;
+
 
 /**
  * Interface for all test initialization and assertion operations.
@@ -81,11 +82,14 @@ public interface CardTestAPI {
 
     /**
      * Define turn number to stop the game on.
+     * @param turn
      */
     void setStopOnTurn(int turn);
 
     /**
      * Define the turn number and step to stop the game on.
+     * @param turn
+     * @param step
      */
     void setStopAt(int turn, PhaseStep step);
 

Mage.Tests/src/test/java/org/mage/test/serverside/base/CardTestPlayerBaseAI.java

@@ -0,0 +1,69 @@
+/*
+ *  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 org.mage.test.serverside.base;
+
+import java.io.FileNotFoundException;
+import mage.constants.MultiplayerAttackOption;
+import mage.constants.RangeOfInfluence;
+import mage.game.Game;
+import mage.game.GameException;
+import mage.game.TwoPlayerDuel;
+import mage.player.ai.ComputerPlayer7;
+import org.mage.test.player.TestPlayer;
+import org.mage.test.serverside.base.impl.CardTestPlayerAPIImpl;
+
+/**
+ *
+ * @author LevelX2
+ */
+
+public abstract class CardTestPlayerBaseAI extends CardTestPlayerAPIImpl {
+ 
+    int skill = 9;
+    
+    @Override
+    protected Game createNewGameAndPlayers() throws GameException, FileNotFoundException {
+        Game game = new TwoPlayerDuel(MultiplayerAttackOption.LEFT, RangeOfInfluence.ONE, 0, 20);
+
+        playerA = createPlayer(game, playerA, "PlayerA");
+        playerB = createPlayer(game, playerB, "PlayerB");
+        return game;
+    }    
+    
+    @Override
+    protected TestPlayer createPlayer(String name) {
+        if (name.equals("PlayerA")) {
+            return new TestPlayer(new ComputerPlayer7("PlayerA", RangeOfInfluence.ONE, skill));
+        }
+        return super.createPlayer(name);
+    }
+
+    public void  setAISkill(int skill) {
+        this.skill = skill;
+    }
+}

Mage.Tests/src/test/java/org/mage/test/serverside/base/MageTestBase.java

@@ -31,7 +31,6 @@ import java.io.FilenameFilter;
 import java.util.*;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
-import static org.mage.test.serverside.base.MageTestPlayerBase.currentGame;
 
 /**
  * Base class for all tests.

Mage.Tests/src/test/java/org/mage/test/serverside/base/MageTestPlayerBase.java

@@ -28,6 +28,7 @@ import java.io.FilenameFilter;
 import java.util.*;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
+import mage.player.ai.ComputerPlayer;
 
 /**
  * Base class for all tests.
@@ -260,14 +261,15 @@ public abstract class MageTestPlayerBase {
     }
     
     private TestPlayer getPlayer(String name) {
-        if (name.equals("ComputerA")) {
+        switch (name) {
-            return playerA;
+            case "ComputerA":
-        } else if (name.equals("ComputerB")) {
+                return playerA;
-            return playerB;
+            case "ComputerB":
-        } else if (name.equals("ComputerC")) {
+                return playerB;
-            return playerC;
+            case "ComputerC":
-        } else if (name.equals("ComputerD")) {
+                return playerC;
-            return playerD;
+            case "ComputerD":
+                return playerD;
         }
         throw new IllegalArgumentException("Couldn't find player for name=" + name);
     }
@@ -339,6 +341,7 @@ public abstract class MageTestPlayerBase {
     }
 
     protected TestPlayer createPlayer(String name) {
-        return new TestPlayer(name, RangeOfInfluence.ONE);
+        return new TestPlayer(new ComputerPlayer(name, RangeOfInfluence.ONE));
     }
+    
 }

Mage.Tests/src/test/java/org/mage/test/serverside/base/impl/CardTestAPIImpl.java

@@ -28,6 +28,7 @@ public abstract class CardTestAPIImpl extends MageTestBase implements CardTestAP
     /**
      * Default game initialization params for red player (that plays with Mountains)
      */
+    @Override
     public void useRedDefault() {
         // *** ComputerA ***
         // battlefield:ComputerA:Mountain:5
@@ -88,6 +89,7 @@ public abstract class CardTestAPIImpl extends MageTestBase implements CardTestAP
      * @param player   {@link Player} to add cards for. Use either playerA or playerB.
      * @param cardName Card name in string format.
      */
+    @Override
     public void addCard(Zone gameZone, TestPlayer player, String cardName) {
         addCard(gameZone, player, cardName, 1, false);
     }
@@ -100,6 +102,7 @@ public abstract class CardTestAPIImpl extends MageTestBase implements CardTestAP
      * @param cardName Card name in string format.
      * @param count    Amount of cards to be added.
      */
+    @Override
     public void addCard(Zone gameZone, TestPlayer player, String cardName, int count) {
         addCard(gameZone, player, cardName, count, false);
     }
@@ -114,6 +117,7 @@ public abstract class CardTestAPIImpl extends MageTestBase implements CardTestAP
      * @param tapped   In case gameZone is Battlefield, determines whether permanent should be tapped.
      *                 In case gameZone is other than Battlefield, {@link IllegalArgumentException} is thrown
      */
+    @Override
     public void addCard(Zone gameZone, TestPlayer player, String cardName, int count, boolean tapped) {
 
 
@@ -179,6 +183,7 @@ public abstract class CardTestAPIImpl extends MageTestBase implements CardTestAP
      * @param player {@link Player} to set life count for.
      * @param life   Life count to set.
      */
+    @Override
     public void setLife(TestPlayer player, int life) {
         if (player.equals(playerA)) {
             commandsA.put(Zone.OUTSIDE, "life:" + String.valueOf(life));
@@ -190,16 +195,18 @@ public abstract class CardTestAPIImpl extends MageTestBase implements CardTestAP
     /**
      * Define turn number to stop the game on.
      */
+    @Override
     public void setStopOnTurn(int turn) {
-        stopOnTurn = turn == -1 ? null : Integer.valueOf(turn);
+        stopOnTurn = turn == -1 ? null : turn;
         stopAtStep = PhaseStep.UNTAP;
     }
 
     /**
      * Define turn number and step to stop the game on.
      */
+    @Override
     public void setStopAt(int turn, PhaseStep step) {
-        stopOnTurn = turn == -1 ? null : Integer.valueOf(turn);
+        stopOnTurn = turn == -1 ? null : turn;
         stopAtStep = step;
     }
 
@@ -208,6 +215,7 @@ public abstract class CardTestAPIImpl extends MageTestBase implements CardTestAP
      *
      * @param turn Expected turn number to compare with. 1-based.
      */
+    @Override
     public void assertTurn(int turn) throws AssertionError {
         Assert.assertEquals("Turn numbers are not equal", turn, currentGame.getTurnNum());
     }
@@ -217,21 +225,28 @@ public abstract class CardTestAPIImpl extends MageTestBase implements CardTestAP
      *
      * @param result Expected {@link GameResult} to compare with.
      */
+    @Override
     public void assertResult(Player player, GameResult result) throws AssertionError {
         if (player.equals(playerA)) {
             GameResult actual = CardTestAPI.GameResult.DRAW;
-            if (currentGame.getWinner().equals("Player PlayerA is the winner")) {
+            switch (currentGame.getWinner()) {
-                actual = CardTestAPI.GameResult.WON;
+                case "Player PlayerA is the winner":
-            } else if (currentGame.getWinner().equals("Player PlayerB is the winner")) {
+                    actual = CardTestAPI.GameResult.WON;
-                actual = CardTestAPI.GameResult.LOST;
+                    break;
+                case "Player PlayerB is the winner":
+                    actual = CardTestAPI.GameResult.LOST;
+                    break;
             }
             Assert.assertEquals("Game results are not equal", result, actual);
         } else if (player.equals(playerB)) {
             GameResult actual = CardTestAPI.GameResult.DRAW;
-            if (currentGame.getWinner().equals("Player PlayerB is the winner")) {
+            switch (currentGame.getWinner()) {
-                actual = CardTestAPI.GameResult.WON;
+                case "Player PlayerB is the winner":
-            } else if (currentGame.getWinner().equals("Player PlayerA is the winner")) {
+                    actual = CardTestAPI.GameResult.WON;
-                actual = CardTestAPI.GameResult.LOST;
+                    break;
+                case "Player PlayerA is the winner":
+                    actual = CardTestAPI.GameResult.LOST;
+                    break;
             }
             Assert.assertEquals("Game results are not equal", result, actual);
         }
@@ -243,6 +258,7 @@ public abstract class CardTestAPIImpl extends MageTestBase implements CardTestAP
      * @param player {@link Player} to get life for comparison.
      * @param life   Expected player's life to compare with.
      */
+    @Override
     public void assertLife(Player player, int life) throws AssertionError {
         int actual = currentGame.getPlayer(player.getId()).getLife();
         Assert.assertEquals("Life amounts are not equal", life, actual);
@@ -265,6 +281,7 @@ public abstract class CardTestAPIImpl extends MageTestBase implements CardTestAP
      * @param scope     {@link mage.filter.Filter.ComparisonScope} Use ANY, if you want "at least one creature with given name should have specified p\t"
      *                  Use ALL, if you want "all creature with gived name should have specified p\t"
      */
+    @Override
     public void assertPowerToughness(Player player, String cardName, int power, int toughness, Filter.ComparisonScope scope)
             throws AssertionError {
         int count = 0;
@@ -298,6 +315,7 @@ public abstract class CardTestAPIImpl extends MageTestBase implements CardTestAP
     /**
      * {@inheritDoc}
      */
+    @Override
     public void assertAbilities(Player player, String cardName, List<Ability> abilities)
             throws AssertionError {
         int count = 0;
@@ -326,6 +344,7 @@ public abstract class CardTestAPIImpl extends MageTestBase implements CardTestAP
      * @param player {@link Player} which permanents should be counted.
      * @param count  Expected count.
      */
+    @Override
     public void assertPermanentCount(Player player, int count) throws AssertionError {
         int actualCount = 0;
         for (Permanent permanent : currentGame.getBattlefield().getAllPermanents()) {
@@ -343,6 +362,7 @@ public abstract class CardTestAPIImpl extends MageTestBase implements CardTestAP
      * @param cardName Name of the cards that should be counted.
      * @param count    Expected count.
      */
+    @Override
     public void assertPermanentCount(Player player, String cardName, int count) throws AssertionError {
         int actualCount = 0;
         for (Permanent permanent : currentGame.getBattlefield().getAllPermanents()) {

Mage.Tests/src/test/java/org/mage/test/serverside/base/impl/CardTestPlayerAPIImpl.java

@@ -1,6 +1,8 @@
 package org.mage.test.serverside.base.impl;
 
 import java.io.FileNotFoundException;
+import java.util.List;
+import java.util.UUID;
 import mage.abilities.Ability;
 import mage.cards.Card;
 import mage.cards.decks.Deck;
@@ -18,20 +20,18 @@ import mage.filter.predicate.mageobject.NamePredicate;
 import mage.game.ExileZone;
 import mage.game.Game;
 import mage.game.GameException;
+import mage.game.GameOptions;
 import mage.game.command.CommandObject;
 import mage.game.permanent.Permanent;
 import mage.game.permanent.PermanentCard;
 import mage.players.Player;
 import org.junit.Assert;
+import org.junit.Before;
 import org.mage.test.player.TestPlayer;
 import org.mage.test.serverside.base.CardTestAPI;
+import org.mage.test.serverside.base.CardTestAPI.GameResult;
 import org.mage.test.serverside.base.MageTestPlayerBase;
 
-import java.util.List;
-import java.util.UUID;
-import mage.game.GameOptions;
-import org.junit.Before;
-
 /**
  * API for test initialization and asserting the test results.
  *
@@ -213,7 +213,6 @@ public abstract class CardTestPlayerAPIImpl extends MageTestPlayerBase implement
      *
      * @param player {@link Player} to remove all library cards from.
      */
-    @Override
     public void removeAllCardsFromLibrary(TestPlayer player) {
         getCommands(player).put(Zone.LIBRARY, "clear");
     }
@@ -235,7 +234,6 @@ public abstract class CardTestPlayerAPIImpl extends MageTestPlayerBase implement
      * @param player   {@link Player} to add cards for. Use either playerA or playerB.
      * @param cardName Card name in string format.
      */
-    @Override
     public void addCard(Zone gameZone, TestPlayer player, String cardName) {
         addCard(gameZone, player, cardName, 1, false);
     }
@@ -248,7 +246,6 @@ public abstract class CardTestPlayerAPIImpl extends MageTestPlayerBase implement
      * @param cardName Card name in string format.
      * @param count    Amount of cards to be added.
      */
-    @Override
     public void addCard(Zone gameZone, TestPlayer player, String cardName, int count) {
         addCard(gameZone, player, cardName, count, false);
     }
@@ -263,7 +260,6 @@ public abstract class CardTestPlayerAPIImpl extends MageTestPlayerBase implement
      * @param tapped   In case gameZone is Battlefield, determines whether permanent should be tapped.
      *                 In case gameZone is other than Battlefield, {@link IllegalArgumentException} is thrown
      */
-    @Override
     public void addCard(Zone gameZone, TestPlayer player, String cardName, int count, boolean tapped) {
 
         if (gameZone.equals(Zone.BATTLEFIELD)) {
@@ -318,7 +314,6 @@ public abstract class CardTestPlayerAPIImpl extends MageTestPlayerBase implement
      * @param player {@link Player} to set life count for.
      * @param life   Life count to set.
      */
-    @Override
     public void setLife(TestPlayer player, int life) {
         getCommands(player).put(Zone.OUTSIDE, "life:" + String.valueOf(life));
     }

Mage/src/mage/abilities/effects/common/SacrificeEffect.java

@@ -90,7 +90,6 @@ public class SacrificeEffect extends OneShotEffect{
         // A spell or ability could have removed the only legal target this player
         // had, if thats the case this ability should fizzle.
         if (amount > 0 && target.canChoose(source.getSourceId(), player.getId(), game)) {
-            boolean abilityApplied = false;
             while (!target.isChosen() && target.canChoose(player.getId(), game) && player.isInGame()) {
                 player.chooseTarget(Outcome.Sacrifice, target, source, game);
             }
@@ -99,11 +98,11 @@ public class SacrificeEffect extends OneShotEffect{
                 Permanent permanent = game.getPermanent(target.getTargets().get(idx));
 
                 if ( permanent != null ) {
-                    abilityApplied |= permanent.sacrifice(source.getSourceId(), game);
+                    permanent.sacrifice(source.getSourceId(), game);
                 }
             }
 
-            return abilityApplied;
+            return true;
         }
         return false;
     }

Mage/src/mage/game/GameImpl.java

@@ -2625,7 +2625,7 @@ public abstract class GameImpl implements Game, Serializable {
                             playerObject.abort();
                         }
                     }
-                    state.restore(restore);
+                    state.restoreForRollBack(restore);
                     // because restore uses the objects without copy each copy the state again
                     gameStatesRollBack.put(getTurnNum(), state.copy());
                     executingRollback = true;

Mage/src/mage/game/GameState.java

@@ -175,11 +175,14 @@ public class GameState implements Serializable, Copyable<GameState> {
         this.permanentOrderNumber = state.permanentOrderNumber;
     }
     
+    public void restoreForRollBack(GameState state) {
+        restore(state);
+        this.turn = state.turn;        
+    }
+    
     public void restore(GameState state) {
         this.activePlayerId = state.activePlayerId;
         this.priorityPlayerId = state.priorityPlayerId;
-        this.turn = state.turn;
-
         this.stack = state.stack;
         this.command = state.command;
         this.exile = state.exile;

Mage/src/mage/players/Player.java

@@ -49,6 +49,7 @@ import mage.abilities.costs.AlternativeSourceCosts;
 import mage.abilities.costs.VariableCost;
 import mage.abilities.costs.mana.ManaCost;
 import mage.abilities.costs.mana.ManaCosts;
+import mage.abilities.mana.ManaOptions;
 import mage.cards.Card;
 import mage.cards.Cards;
 import mage.cards.decks.Deck;
@@ -377,9 +378,11 @@ public interface Player extends MageItem, Copyable<Player> {
     void phasing(Game game);
     void untap(Game game);
 
+    ManaOptions getManaAvailable(Game game);
     List<Ability> getPlayable(Game game, boolean hidden);
     List<Ability> getPlayableOptions(Ability ability, Game game);
     
+
     Set<UUID> getPlayableInHand(Game game);
     LinkedHashMap<UUID, ActivatedAbility> getUseableActivatedAbilities(MageObject object, Zone zone, Game game);
     

Mage/src/mage/players/PlayerImpl.java

@@ -1089,7 +1089,6 @@ public abstract class PlayerImpl implements Player, Serializable {
 
     @Override
     public boolean activateAbility(ActivatedAbility ability, Game game) {
-        getManaPool().setStock(); // needed for the "mana already in the pool has to be used manually" option
         boolean result;
         if (ability instanceof PassAbility) {
             pass(game);
@@ -1156,7 +1155,7 @@ public abstract class PlayerImpl implements Player, Serializable {
                 return true;
             }
         }
-        game.restoreState(bookmark, source.getRule());
+        game.restoreState(bookmark, source.getRule()); // why restore is needed here?
         return false;
     }
 
@@ -2149,7 +2148,8 @@ public abstract class PlayerImpl implements Player, Serializable {
         return blockers;
     }
 
-    protected ManaOptions getManaAvailable(Game game) {
+    @Override
+    public ManaOptions getManaAvailable(Game game) {
         ManaOptions available = new ManaOptions();
 
         List<Abilities<ManaAbility>> sourceWithoutCosts = new ArrayList<>();
@@ -2207,7 +2207,7 @@ public abstract class PlayerImpl implements Player, Serializable {
     }
 
     // returns only mana producers that require mana payment
-    protected List<Permanent> getAvailableManaProducersWithCost(Game game) {
+    public List<Permanent> getAvailableManaProducersWithCost(Game game) {
         List<Permanent> result = new ArrayList<>();
         for (Permanent permanent : game.getBattlefield().getAllActivePermanents(playerId)) {
             for (ManaAbility ability : permanent.getAbilities().getManaAbilities(Zone.BATTLEFIELD)) {