[JAVA][Beginning Java 8 Games Development]

Chapter 6 ■ The Foundation of Game Design: The JavaFX Scene Graph and the InvinciBagel Game Infrastructure
Scene Graph Code: Optimizing Your Current InvinciBagel Class
I know you are eager to work on the InvinciBagel class code, so let’s clean up, organize, and optimize the existing Java
code to implement this top-level UI screen design. First, put the object declaration and naming Java code at the top
of the InvinciBagel class. This is more organized, and all the methods that are inside your class will be able to see and
reference these objects without using Java modifier keywords. As you can see in Figure 6-4, these include your existing
scene Scene object, root StackPane object, and btn Button object (which I am renaming gameButton). I added three
other Button objects, named helpButton, scoreButton, and legalButton, all declared and named using a single
line of Java code, as well as two ImageView objects, named splashScreenbackplate and splashScreenTextArea.
You also need to create four Image objects to hold digital image assets, which will be displayed in the ImageView
nodes; I have named these splashScreen, instructionLayer, legalLayer, and scoresLayer and declared them,
using one compound Java statement. Finally, you declare and name the buttonContainer VBox object and the
buttonContainerPadding Insets object. NetBeans will write import statements for you, so long as you use the
Alt+Enter keyboard shortcut, selecting the correct javafx package and class path. The imports are shown at the top of
the figure.
Figure 6-4. Declaring and naming the 14 objects that will make up your Scene Graph hierarchy at the top of the class
You will be taking a look at all these JavaFX classes in detail in this chapter so that you learn what they are used
for and what they can do for your Java applications.
www.it-ebooks.info
127