spjspj - Add new condition 'SourceHasRemainedOnBattlefield' and adjust DL SIlumgar to use it as well (as DL Silumgar was buggy with Ghostly Flicker for example)

Also implement Preacher (DRK)

Mage/src/main/java/mage/abilities/condition/common/SourceHasRemainedInSameZoneCondition.java

@@ -0,0 +1,74 @@
+/*
+ *  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.condition.common;
+
+import java.util.UUID;
+import mage.abilities.Ability;
+import mage.abilities.condition.Condition;
+import mage.game.Game;
+
+
+/**
+ * As long as the card has remained in the same zone 
+ * since this condition was created, the condition is true.
+ *
+ * @author spjspj
+ */
+public class SourceHasRemainedInSameZoneCondition implements Condition {
+
+    UUID idToCheck = null;
+    int timesChangedZones = -1;
+    
+    public SourceHasRemainedInSameZoneCondition(UUID idToCheck) {
+        this.idToCheck = idToCheck;
+        this.timesChangedZones = -1;
+    }
+
+    public SourceHasRemainedInSameZoneCondition getInstance(UUID cardId) {
+        return new SourceHasRemainedInSameZoneCondition(cardId);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        if (idToCheck != null && game.getCard(idToCheck) != null) {
+            if (timesChangedZones == -1) {
+                timesChangedZones = game.getState().getZoneChangeCounter(idToCheck);
+            }
+            if (timesChangedZones == game.getState().getZoneChangeCounter(idToCheck)) {
+                return true;
+            }
+        }
+        
+        return false;
+    }
+
+    @Override
+    public String toString() {
+        return "if {this} has remained in the same zone";
+    }
+}