Exclude custom sets from constructed formats.

Mage/src/main/java/mage/cards/ExpansionSet.java

@@ -68,6 +68,8 @@ public abstract class ExpansionSet implements Serializable {
     protected String packageName;
     protected int maxCardNumberInBooster; // used to ommit cards with collector numbers beyond the regular cards in a set for boosters
 
+    protected boolean isCustomSet = false;
+
     protected final EnumMap<Rarity, List<CardInfo>> savedCards;
 
     public ExpansionSet(String name, String code, String packageName, Date releaseDate, SetType setType) {
@@ -374,6 +376,8 @@ public abstract class ExpansionSet implements Serializable {
         return null;
     }
 
+    public boolean isCustomSet() { return isCustomSet; }
+
     public void removeSavedCards() {
         savedCards.clear();
     }

Mage/src/main/java/mage/cards/Sets.java

@@ -30,11 +30,7 @@ package mage.cards;
 
 import java.io.FileNotFoundException;
 import java.io.PrintWriter;
-import java.util.ArrayList;
+import java.util.*;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
-import java.util.Random;
 
 import mage.cards.decks.DeckCardInfo;
 import mage.cards.decks.DeckCardLists;
@@ -61,6 +57,8 @@ public class Sets extends HashMap<String, ExpansionSet> {
         return fINSTANCE;
     }
 
+    private Set<String> customSets = new HashSet<>();
+
     private Sets() {
         ArrayList<String> packages = new ArrayList<>();
         packages.add("mage.sets");
@@ -72,8 +70,14 @@ public class Sets extends HashMap<String, ExpansionSet> {
         }
     }
 
-    private void addSet(ExpansionSet set) {
+    public void addSet(ExpansionSet set) {
+        if(containsKey(set.getCode())) throw new IllegalArgumentException("Set code "+set.getCode()+" already exists.");
         this.put(set.getCode(), set);
+        if(set.isCustomSet) customSets.add(set.getCode());
+    }
+
+    public static boolean isCustomSet(String setCode) {
+        return getInstance().customSets.contains(setCode);
     }
 
     /**

Mage/src/main/java/mage/cards/decks/Constructed.java

@@ -27,13 +27,10 @@
  */
 package mage.cards.decks;
 
-import java.util.ArrayList;
+import java.util.*;
-import java.util.Arrays;
-import java.util.HashMap;
-import java.util.List;
-import java.util.Map;
 import java.util.Map.Entry;
 import mage.cards.Card;
+import mage.cards.Sets;
 import mage.cards.repository.CardInfo;
 import mage.cards.repository.CardRepository;
 import mage.constants.Rarity;
@@ -52,6 +49,9 @@ public class Constructed extends DeckValidator {
     protected List<String> setCodes = new ArrayList<>();
     protected List<Rarity> rarities = new ArrayList<>();
 
+    protected boolean allowAllCustomSets = false;
+    protected Set<String> allowedCustomSetCodes = new HashSet<>();
+
     public Constructed() {
         super("Constructed");
     }
@@ -126,22 +126,21 @@ public class Constructed extends DeckValidator {
             }
         }
 
-        if (!setCodes.isEmpty()) {
         for (Card card : deck.getCards()) {
-                if (!setCodes.contains(card.getExpansionSetCode())) {
+            if (!isSetAllowed(card.getExpansionSetCode())) {
                 if( !legalSets(card) ){
                     valid = false;
                 }
             }
         }
         for (Card card : deck.getSideboard()) {
-                if (!setCodes.contains(card.getExpansionSetCode())) {
+            if (!isSetAllowed(card.getExpansionSetCode())) {
                 if( !legalSets(card) ){
                     valid = false;
                 }
             }
         }
-        }
+
         logger.debug("DECK validate end: " + name + " deckname: " + deck.getName() + " invalids:" + invalid.size());
         return valid;
     }
@@ -167,6 +166,16 @@ public class Constructed extends DeckValidator {
         return legal;
     }
 
+    /**
+     * Checks if a given set is legal in this format.
+     * @param code - the set code to check
+     * @return Whether the set is legal in this format.
+     */
+    protected boolean isSetAllowed(String code) {
+        if(Sets.isCustomSet(code)) return allowAllCustomSets || allowedCustomSetCodes.contains(code);
+        else                       return setCodes.isEmpty() || setCodes.contains(code);
+    }
+
     /**
      * Checks if the given card is legal in any of the given sets
      * @param card - the card to check
@@ -177,7 +186,7 @@ public class Constructed extends DeckValidator {
         boolean legal = false;
         List<CardInfo> cardInfos = CardRepository.instance.findCards(card.getName());
         for (CardInfo cardInfo : cardInfos) {
-            if (setCodes.contains(cardInfo.getSetCode())) {
+            if (isSetAllowed(cardInfo.getSetCode())) {
                 legal = true;
                 break;
             }