implement server side restrictions

src/engine/objects/ItemBase.java

@@ -969,14 +969,16 @@ public class ItemBase {
     }
 
     public Boolean ValidClass(Enum.ClassType base,Enum.ClassType profession){
-        if(this.requiredClasses.isEmpty() && this.restrictedClasses.isEmpty())
+        boolean requiredEmpty = this.requiredClasses == null || this.requiredClasses.isEmpty();
+        boolean restrictedEmpty = this.restrictedClasses == null || this.restrictedClasses.isEmpty();
+        if(requiredEmpty && restrictedEmpty)
             return true;
 
-        if(this.requiredClasses.isEmpty() == false)
+        if(this.requiredClasses != null && this.requiredClasses.isEmpty() == false)
             if(this.requiredClasses.contains(base) || this.requiredClasses.contains(profession))
                 return true;
 
-        if(this.restrictedClasses.isEmpty() == false)
+        if(this.restrictedClasses != null && this.restrictedClasses.isEmpty() == false)
             if(this.restrictedClasses.contains(base) == false && this.restrictedClasses.contains(profession) == false)
                 return true;
 
@@ -984,7 +986,9 @@ public class ItemBase {
     }
 
     public Boolean ValidDiscipline(EnumSet<Enum.DisciplineType> discs){
-        if(this.requiredDiscs.isEmpty() && this.restrictedDiscs.isEmpty())
+        boolean requiredEmpty = this.requiredDiscs == null || this.requiredDiscs.isEmpty();
+        boolean restrictedEmpty = this.restrictedDiscs == null || this.restrictedDiscs.isEmpty();
+        if(requiredEmpty && restrictedEmpty)
             return true;
 
         for(Enum.DisciplineType disc : discs){

src/engine/objects/PlayerCharacter.java

@@ -4575,11 +4575,15 @@ public class PlayerCharacter extends AbstractCharacter {
         else
             this.absGender = SexType.FEMALE;
 
+
         for(CharacterRune rune : this.runes){
             try {
                 DisciplineType disc = DisciplineType.valueOf(RuneBase.getRuneBase(rune.getRuneBaseID()).getName().replace("-", "").replace(" ", ""));
                 if (disc != null) {
-                    this.absDisciplines.add(disc);
+                    if(this.absDisciplines == null)
+                        this.absDisciplines = EnumSet.of(disc);
+                    else
+                        this.absDisciplines.add(disc);
                 }
             } catch(Exception e){