[JAVA][Beginning Java 8 Games Development]

Chapter 17 ■ Enhancing Game Play: Creating a Scoring Engine, Adding Treasure and an Enemy Auto-Attack Engine
The next step in the work process is to use GIMP to create the collision polygon for the Enemy object, as is seen
in Figure 17-19, using only nine data points. Use the SVG data creation work process you learned in Chapter 16.
Figure 17-19. Use GIMP to create a nine-point collision polygon for your Enemy Actor
Before we go into the InvinciBagel.java class to declare and instantiate an Enemy object named iBeagle, let’s
create the Projectile.java class, so that our Enemy object has Projectile objects to shoot at the InvinciBagel character!
Creating Cream Cheese Bullets: Coding a Projectile.java Class
Now that we have added positive (Treasure) elements to our game, let’s add some negative (Enemy and Projectile)
elements to the game, so that we remain “balanced” in our development work process! Create a Projectile.java class
and constructor method that sets isFixed to false (since projectiles fly) and isBonus and hasValu to true, so the object
properties are set. The Java code for this Projectile.java class can be seen in Figure 17-20, and looks like the following:
package invincibagel;
import javafx.scene.image.Image;
public class Projectile extends Actor {
public Projectile(String SVGdata, double xLocation, double yLocation, Image... spriteCels) {
super(SVGdata, xLocation, yLocation, spriteCels);
spriteFrame.setTranslateX(xLocation);
spriteFrame.setTranslateY(yLocation);
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