Reusing existing classes

Let's quickly add our SoundManager and InputController classes to this project because they only need a little tweak to accommodate our needs here too.

Add a member for a SoundManager and an InputController object in both the AsteroidsView and AsteroidsRenderer classes.

private InputController ic;
private SoundManager sm;

Initialize the new objects in the onCreate method of the AsteroidsView class and call the loadSound method like this:

public AsteroidsView(Context context, int screenX, int screenY) {
  super(context);

     sm = new SoundManager();
     sm.loadSound(context);
     ic = new InputController(screenX, screenY);
     gm = new GameManager(screenX, screenY);

Also in AsteroidsView, add an extra two arguments to the call to the AsteroidsRenderer ...

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