In this book, you will find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "Start by creating a new class called GameCharacterControl, which extends BetterCharacterControl."

A block of code is set as follows:

public void update(float tpf) {
  super.update(tpf);
  Vector3f modelForwardDir = spatial.getWorldRotation().mult(Vector3f.UNIT_Z);
  Vector3f modelLeftDir = spatial.getWorldRotation().mult(Vector3f.UNIT_X);
  walkDirection.set(0, 0, 0);

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

camLocation.setY(checkHeight() + camDistance);
cam.setLocation(camLocation);

New terms and important words are shown in bold. Words that you see on the screen, in menus or dialog boxes for example, appear in the text like this: "Go to the File menu and select Import Model."