Support ruby-only event handler chains; Add friend/ignore list support and private messaging; Format.

data/plugins/chat-privacy/plugin.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0"?>
+<plugin>
+  <id>chat-privacy</id>
+  <version>1</version>
+  <name>Chat privacy</name>
+  <description>Adds chat privacy support.</description>
+  <authors>
+    <author>Major</author>
+  </authors>
+  <scripts>
+    <script>privacy.rb</script>
+  </scripts>
+  <dependencies>
+    <dependency>private-messaging</dependency>
+  </dependencies>
+</plugin>

data/plugins/chat-privacy/privacy.rb

@@ -0,0 +1,11 @@
+require 'java'
+
+java_import 'org.apollo.game.model.settings.PrivacyState'
+
+on :event, :privacy_option do |ctx, player, event|
+  player.chat_privacy = event.chat_privacy
+  player.friend_privacy = event.friend_privacy
+  player.trade_privacy = event.trade_privacy
+
+  update_friends(player, event.friend_privacy == PrivacyState::OFF ? 0 : player.world_id)
+end