[JAVA][Beginning Java 8 Games Development]

Chapter 6 ■ The Foundation of Game Design: The JavaFX Scene Graph and the InvinciBagel Game Infrastructure
As Figure 6-10 shows, the code is error free, because you have copied the four PNG files into your project’s /src
folder. You do not need the other lines of code (ImageView object instantiation, .setImage()), because you will be
using the splashScreenTextArea ImageView object to hold these last two Image objects. Thus, you are saving on Scene
Graph Node objects used, as you are using a single ImageView Scene Graph Node object to display three different
Image objects (overlays), based on button events.
Figure 6-10. Adding legalLayer and scoresLayer Image object instantiations to add the other image composite plates
This means that the splashScreenTextArea.setImage() method calls you will make off the
splashScreenTextArea ImageView object will be placed inside the ActionEvent EventHandler programming
constructs for the three Button objects that trigger image composite overlays when they are clicked. The fourth Button
object will start up game play, so, for now, you will just have a Java comment in that button event-handling structure,
making it an “empty” logic structure. Now, let’s take a look at how to finish coding these EventHandler constructs so
that you can finish this UI design and get on with creating the game play engines mentioned earlier.
Interactivity: Wiring the InvinciBagel Buttons for Use
You need to replace the system writing to the console code in all these duplicated button event-handling structures
with calls to the .setImage() method so that you can set the image-compositing plate ImageView to the Image object
that holds the digital image asset you want to overlay the InvinciBagel backplate artwork created by Pat Harrington.
You have already written this code construct twice in the createSplashScreenNodes() method, so you can copy the
line of code directly above the two Image object instantiations you just wrote, if you want a shortcut.
The .setOnAction() event-handling Java code structures would therefore look like this:
helpButton.setOnAction(new EventHandler() {
@Override
public void handle(ActionEvent event) {
splashScreenTextArea.setImage(instructionLayer);
}
});
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