refactored out dependency

src/engine/mbEnums.java

@@ -24,8 +24,6 @@ import java.util.EnumSet;
 import java.util.HashMap;
 import java.util.concurrent.ThreadLocalRandom;
 
-;
-
 /*
  * MagicBane engine enumeration class.
  *
@@ -36,6 +34,14 @@ import java.util.concurrent.ThreadLocalRandom;
 
 public class mbEnums {
 
+    public static <T extends Enum<T>> long toLong(EnumSet<T> enumSet) {
+        long r = 0;
+        for (T value : enumSet) {
+            r |= 1L << value.ordinal();
+        }
+        return r;
+    }
+
     public static <E extends java.lang.Enum<E>> EnumSet<E> fromLong(long bitVector, Class<E> enumClass) {
 
         // Bitvector -> EnumSet without the EnumBitvector dependency
@@ -1582,7 +1588,7 @@ public class mbEnums {
     // It is also used as a bitvector flag in the npc
     // building slot mechanics.
 
-    public enum BuildingGroup implements EnumBitSetHelper<BuildingGroup> {
+    public enum BuildingGroup {
         NONE(0, 0),
         TOL(64f, 64f),
         BARRACK(32f, 64f),