add getVarbitCount and warn instead of throw when varb doesnt exist

runelite-api/src/main/java/net/runelite/api/Client.java

@@ -809,6 +809,11 @@ public interface Client extends GameShell
 	 */
 	void setVarbitValue(int[] varps, int varbit, int value);
 
+	/**
+	 * @return the total number of VarbitDefinition
+	 */
+	int getVarbitCount();
+
 	/**
 	 * Gets the widget flags table.
 	 *

runelite-mixins/src/main/java/net/runelite/mixins/VarbitMixin.java

@@ -16,6 +16,8 @@ import net.runelite.rs.api.RSVarbitDefinition;
 @Mixin(RSClient.class)
 public abstract class VarbitMixin implements RSClient
 {
+	private static final int VARBITS_GROUP = 14;
+
 	@Shadow("client")
 	private static RSClient client;
 
@@ -69,7 +71,8 @@ public abstract class VarbitMixin implements RSClient
 
 		if (v.getIndex() == 0 && v.getLeastSignificantBit() == 0 && v.getMostSignificantBit() == 0)
 		{
-			throw new IndexOutOfBoundsException("Varbit " + varbitId + " does not exist");
+			getLogger().debug("Varbit {} doesn't exist!", varbitId);
+			return 0;
 		}
 
 		int value = varps[v.getIndex()];
@@ -152,4 +155,11 @@ public abstract class VarbitMixin implements RSClient
 	{
 		return getVarcs().getVarcMap();
 	}
+
+	@Inject
+	@Override
+	public int getVarbitCount()
+	{
+		return getConfigArchive().getGroupFileCount(VARBITS_GROUP);
+	}
 }

runescape-api/src/main/java/net/runelite/rs/api/RSAbstractArchive.java

@@ -7,4 +7,7 @@ public interface RSAbstractArchive extends IndexDataBase
 {
 	@Import("takeFile")
 	byte[] getConfigData(int archiveId, int fileId);
+
+	@Import("getGroupFileCount")
+	int getGroupFileCount(int group);
 }

runescape-api/src/main/java/net/runelite/rs/api/RSClient.java

@@ -457,6 +457,9 @@ public interface RSClient extends RSGameShell, Client
 	@Import("SpriteBuffer_spritePalette")
 	void setIndexedSpritePalette(int[] indexedSpritePalette);
 
+	@Import("archive2")
+	RSArchive getConfigArchive();
+
 	@Import("archive6")
 	RSArchive getMusicTracks();