13 Aliens!
In this chapter, we’ll add aliens to Alien Invasion. We’ll add one alien near the top of the screen and then generate a whole fleet of aliens. We’ll make the fleet advance sideways and down, and we’ll get rid of any aliens hit by a bullet. Finally, we’ll limit the number of ships a player has and end the game when the player runs out of ships.
As you work through this chapter, you’ll learn more about Pygame and about managing a large project. You’ll also learn to detect collisions between game objects, like bullets and aliens. Detecting collisions helps you define interactions between elements in your games. For example, you can ...
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