[JAVA][Beginning Java 8 Games Development]

Chapter 17 ■ Enhancing Game Play: Creating a Scoring Engine, Adding Treasure and an Enemy Auto-Attack Engine
Creating the Scoring Engine Logic: .scoringEngine( )
What I want to base scoring on in this game is the type of Object, as we are going to have fixed Actor subclass objects
for the InvinciBagel to score against, such as Prop, PropV, PropH, PropB, Treasure, Projectile, Enemy, and similar.
Since the switch-case structure does not support using an Object in its evaluation logic, we are going to have to use
conditional if() statements, along with the Java instanceof operator, which, as you can tell from its name, is used to
determine object type or instance; in this particular case, to start with, if the Actor object is an instance of the Prop,
PropV, PropH, or PropB class. The basic Java code structure for the scoringEngine() method evaluates one if() for
each Actor object type, and then sets the gameScore variable, which is displayed by the scoreText Text object, inside
of the invinciBagel object. This programming logic can all be seen in Figure 17-9. The Java code should look like this:
private void scoringEngine(Actor object){
if(object instanceof Prop) { invinciBagel.gameScore+=5; }
if(object instanceof PropV) { invinciBagel.gameScore+=4; }
if(object instanceof PropH) { invinciBagel.gameScore+=3; }
if(object instanceof PropB) { invinciBagel.gameScore+=2; }
invinciBagel.scoreText.setText(String.valueOf(invinciBagel.gameScore));
}
Figure 17-9. Code basic conditional if() statements inside of the .scoringEngine() method using instanceof
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