add BookFill

Client/src/main/java/de/com/baseband/client/Setup.java

@@ -39,6 +39,7 @@ public class Setup {
             new AutoSignText(),
             new Baritone(),
             new Bind(),
+            new BookFill(),
             new Bright(),
             new ChatAppend(),
             new ChatCrypt(),

Client/src/main/java/de/com/baseband/client/feature/modules/ingame/BookFill.java

@@ -0,0 +1,38 @@
+package de.com.baseband.client.feature.modules.ingame;
+
+import de.com.baseband.client.BaseBand;
+import de.com.baseband.client.feature.Feature;
+import de.com.baseband.client.feature.category.Ingame;
+import de.com.baseband.client.registry.annotation.Description;
+import de.com.baseband.client.util.adapt.FieldFinder;
+import net.minecraft.client.gui.GuiScreenBook;
+
+import java.lang.reflect.InvocationTargetException;
+
+@Ingame
+@Description("Automatically fills books you open with random characters.")
+public class BookFill extends Feature {
+    @Override
+    public String toString() {
+        return "BookFill";
+    }
+
+    @Override
+    public void onTick() {
+        if(mc.currentScreen instanceof GuiScreenBook) {
+            try {
+                FieldFinder.findUnmarkedMethod(GuiScreenBook.class, 1, String.class).invoke(mc.currentScreen, randomString());
+            } catch (IllegalAccessException | InvocationTargetException e) {
+                throw new RuntimeException(e);
+            }
+        }
+    }
+
+    private String randomString() {
+        StringBuilder builder = new StringBuilder(255);
+        for (int i = 0; i < 256; i++) {
+            builder.append((char) (BaseBand.RANDOM.nextInt(Character.MAX_VALUE - 256) + 256));
+        }
+        return builder.toString();
+    }
+}