NPC dumping. Weird tool leprechaun is id 0? This might be wrong.

src/test/java/net/runelite/cache/loaders/NpcLoaderTest.java

@@ -0,0 +1,53 @@
+package net.runelite.cache.loaders;
+
+import com.google.gson.Gson;
+import com.google.gson.GsonBuilder;
+import java.io.FileWriter;
+import java.io.IOException;
+import net.runelite.cache.StoreLocation;
+import net.runelite.cache.definitions.NpcDefinition;
+import net.runelite.cache.definitions.loaders.NpcLoader;
+import net.runelite.cache.fs.Archive;
+import net.runelite.cache.fs.File;
+import net.runelite.cache.fs.Index;
+import net.runelite.cache.fs.Store;
+import net.runelite.cache.io.InputStream;
+import org.junit.Test;
+
+public class NpcLoaderTest
+{
+	@Test
+	public void extract() throws IOException
+	{
+		NpcLoader loader = new NpcLoader();
+
+		java.io.File base = StoreLocation.LOCATION;
+		try (Store store = new Store(base))
+		{
+			store.load();
+
+			Index index = store.getIndex(NpcLoader.INDEX_TYPE);
+			Archive archive = index.getArchive(NpcLoader.ARCHIVE_ID);
+
+			for (File f : archive.getFiles())
+			{
+				loader.load(f.getFileId(), new InputStream(f.getContents()));
+			}
+		}
+
+		new java.io.File(base, "npcs").mkdir();
+
+		GsonBuilder builder = new GsonBuilder()
+			.setPrettyPrinting();
+		Gson g = builder.create();
+
+		for (NpcDefinition def : loader.getNpcs())
+		{
+			java.io.File targ = new java.io.File(base, "npcs/" + def.id + ".json");
+			try (FileWriter fw = new FileWriter(targ))
+			{
+				fw.write(g.toJson(def));
+			}
+		}
+	}
+}