Add support for events with ruby-only handlers.

data/events.xml

@@ -5,10 +5,6 @@
       <handler>org.apollo.game.event.handler.impl.PrivacyOptionEventHandler</handler>
     </chain>
   </event>
-  <event>
-    <type>org.apollo.game.event.impl.KeepAliveEvent</type>
-    <chain />
-  </event>
   <event>
     <type>org.apollo.game.event.impl.PlayerDesignEvent</type>
     <chain>
@@ -91,24 +87,4 @@
       <handler>org.apollo.game.event.handler.impl.ItemVerificationHandler</handler>
     </chain>
   </event>
-  <event>
-    <type>org.apollo.game.event.impl.SpamPacketEvent</type>
-    <chain />
-  </event>
-  <event>
-    <type>org.apollo.game.event.impl.MouseClickEvent</type>
-    <chain />
-  </event>
-  <event>
-    <type>org.apollo.game.event.impl.ArrowKeyEvent</type>
-    <chain />
-  </event>
-  <event>
-    <type>org.apollo.game.event.impl.FocusUpdateEvent</type>
-    <chain />
-  </event>
-  <event>
-    <type>org.apollo.game.event.impl.TakeTileItemEvent</type>
-    <chain />
-  </event>
 </events>

src/org/apollo/game/event/handler/chain/EventHandlerChainGroup.java

@@ -3,6 +3,7 @@ package org.apollo.game.event.handler.chain;
 import java.util.Map;
 
 import org.apollo.game.event.Event;
+import org.apollo.game.event.handler.EventHandler;
 
 /**
  * A group of {@link EventHandlerChain}s classified by the {@link Event} type.
@@ -34,7 +35,11 @@ public final class EventHandlerChainGroup {
 	 */
 	@SuppressWarnings("unchecked")
 	public <E extends Event> EventHandlerChain<E> getChain(Class<E> clazz) {
-		return (EventHandlerChain<E>) chains.get(clazz);
+		EventHandlerChain<E> chain = (EventHandlerChain<E>) chains.get(clazz);
+		if (chain == null) {
+			chains.put(clazz, chain = new EventHandlerChain<E>(new EventHandler[0]));
+		}
+		return chain;
 	}
 
 }

src/org/apollo/util/plugin/PluginContext.java

@@ -54,11 +54,9 @@ public final class PluginContext {
 	 */
 	public <T extends Event> void addEventDecoder(int releaseNo, int opcode, EventDecoder<T> decoder) {
 		Release release = context.getRelease();
-		if (release.getReleaseNumber() != releaseNo) {
-			return;
+		if (release.getReleaseNumber() == releaseNo) {
+			release.register(opcode, decoder);
 		}
-
-		release.register(opcode, decoder);
 	}
 
 	/**
@@ -71,11 +69,9 @@ public final class PluginContext {
 	 */
 	public <T extends Event> void addEventEncoder(int releaseNo, Class<T> event, EventEncoder<T> encoder) {
 		Release release = context.getRelease();
-		if (release.getReleaseNumber() != releaseNo) {
-			return;
+		if (release.getReleaseNumber() == releaseNo) {
+			release.register(event, encoder);
 		}
-
-		release.register(event, encoder);
 	}
 
 	/**