cannot group outside of nation

src/engine/net/client/handlers/GroupInviteHandler.java

@@ -21,6 +21,7 @@ import engine.net.client.msg.ClientNetMsg;
 import engine.net.client.msg.group.GroupInviteMsg;
 import engine.net.client.msg.group.GroupUpdateMsg;
 import engine.objects.Group;
+import engine.objects.Guild;
 import engine.objects.PlayerCharacter;
 
 public class GroupInviteHandler extends AbstractClientMsgHandler {
@@ -103,6 +104,12 @@ public class GroupInviteHandler extends AbstractClientMsgHandler {
         if (target.isIgnoringPlayer(source))
             return false;
 
+        if(source.getGuild().getNation().equals(target.getGuild().getNation()) == false)
+            return false; // cannot group outside of nation
+
+        if(source.getGuild().getNation().equals(target.getGuild().getNation()) && source.getGuild().getNation().equals(Guild.getErrantGuild()))
+            if(source.getGuild().equals(target.getGuild()) == false)
+                return false; // cannot group as an errant guild with other errant guilds
 
         // dont block invites to people already in a group and
         // dont check for pending invites, the client does it