Book Image

Android Game Programming by Example

By : John Horton
Book Image

Android Game Programming by Example

By: John Horton

Overview of this book

Table of Contents (18 chapters)
Android Game Programming by Example
About the Author
About the Reviewers
Platformer – Guns, Life, Money, and the Enemy

Performing the checks

We are really close to being able to play our game, albeit with simplified collision detection. First add some methods that handle what happens when certain collisions are detected and then see how we actually use our CD class.

Helper methods

First of all, we need a couple of helper methods to respond, when we detect various types of collisions.

We need a method for when the ship is destroyed and a method for when an asteroid is destroyed. The next two subsections cover this.

Destroying a ship

The death of a ship can be detected in two places, so it makes sense to add a method to handle the events that follow. In this next method, we reset the ship's location to the center of the map, play a sound, and decrement numLives.

If numLives is equal to zero, set levelNumber back to one, numLives to three, call createObjects() to redraw a level, pause the game, and then play a sound suitable to let the player know that he is starting again.

Now, add the lifeLost method to the AsteroidsRenderer...