Test if value is enumset

src/engine/objects/ItemTemplate.java

@@ -493,6 +493,7 @@ public class ItemTemplate {
                 rune_dsc = (String) jsonObject.get("rune_dsc");
                 rune_fx_txt = (String) jsonObject.get("rune_fx_txt");
                 rune_group_tactics = ((Long) jsonObject.get("rune_group_tactics")).intValue();
+                EnumSet<Enum.MobBehaviourType> tactics = Enum.fromLong(rune_group_tactics, Enum.MobBehaviourType.class);
                 rune_group_role_set = ((Long) jsonObject.get("rune_group_role_set")).intValue();
 
                 JSONArray enemy_types_json = (JSONArray) jsonObject.get("rune_enemy_monster_types");