[JAVA][Beginning Java 8 Games Development]

Chapter 16 ■ Collision Detection: Creating SVG Polygons for the Game Actors and Writing Code to Detect Collision
Figure 16-46. Add a private void scoringEngine(Actor object) empty method, and call if inside .checkCollision()
method
We’ll do this in the next chapter, so we don’t have to worry about that warning from NetBeans, and we have our
scoring engine infrastructure in place.
You’ve accomplished a lot in this chapter, regarding collision detection and your scoring engine. Good Job!
Summary
In this sixteenth chapter, we started in on some of the more advanced topics that we will be covering during the last
couple of chapters in this book. Collision detection is one of the foundational topics of game development, whether
this is using Java 8, or any other platform, for that matter. In this chapter we learned about the SVG data format
specification, so that we can leverage the JavaFX SVGPath class, which allows us to access custom path shapes, often
called polygons, if they are closed, and which collision shapes, or collision polygons, usually are. We looked at the
seven primary commands within the SVG specification, all of which can be used in absolute or relative mode.
Next we took a detailed look at how to get GIMP 2.8 to create custom collision shape SVG data strings for us using
a fully automated process that uses only GIMP tools (algorithms) to allow us to simply click on transparent areas and
have GIMP generate the selection set. We converted the selection set into a collision path, and then exported the path
as SVG data. This work process allows us to generate complex collision polygons with transparent (alpha channel
data) areas within any of the game asset digital images.
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