[JAVA][Beginning Java 8 Games Development]

Chapter 8 ■ Creating Your Actor Engine: Design the Characters for Your Game and Define Their Capabilities
Figure 8-11. Add the @Override public abstract void .update() and public boolean .collide(Actor object) methods
Next, let’s add another eleven variables into this Hero class. These will hold data values that apply to motion
sprites, which have to deal with colliding with things, and obey the laws of physics. We will also need things such as a
lifespan variable, and one that holds the accumulation of damage (points), which may be incurred if enemies shoot
at each other. We’ll add protected variables such as X and Y velocity, X and Y offset (for fine-tuning positioning
of things relative to a sprite), and collision shape rotation and scaling factors, and finally, friction, gravity, and
bounce factors.
Adding Sprite Control and Definition Variables to the Hero Class
The next thing that we need to do is to make sure that all of the variables that we will need to hold data for motion
sprites are defined at the top of the Hero class, as seen in Figure 8-12. This information will be used by NetBeans to
create getter and setter methods for the Hero class. The Java code should look like this:
protected double vX;
protected double vY;
protected double lifeSpan;
protected double damage;
protected double offsetX;
protected double offsetY;
protected double boundScale;
protected double boundRot;
protected double friction;
protected double gravity;
protected double bounce;
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