[JAVA][Beginning Java 8 Games Development]

Chapter 17 ■ Enhancing Game Play: Creating a Scoring Engine, Adding Treasure and an Enemy Auto-Attack Engine
Figure 17-14. After adding declarations at the top of the class, instantiate the objects, and add them to a Scene Graph
Let’s take a moment and use a Run ➤ Project work process and see if our Treasure Actors are on the screen!
As you can see in the left half of Figure 17-15, all Treasure objects are visible in the Scene, and we’re ready to start
enhancing our .scoringEngine() method, to support negative scoring as well as add in Treasure scoring values.
Figure 17-15. Check Treasure placement (left) and test negative collision values (right) and Treasure collision detection
As you’ll soon see (and is seen on the right side of Figure 17-15), a Java int (integer) data type supports negative
values, so all you have to do in your .scoringEngine() method is to change += to -= for Actor objects that you want
the game player to avoid. In our development scenario here, we’ll use collision with Prop objects to give a
negative score.
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