Alien Invasion

Alien Invasion is a 2D game inspired on the classic game Space Invaders and developed using Python and PyGame.

This is one of the projects from the book Python Crash Course: A Hands-On, Project-Based Introduction to Programming, by Eric Matthes (@ehmatthes)

How it works

In Alien Invasion, the player controls a rocket ship that appears at the bottom center of the screen.
The player can move the ship right and left using the arrow keys and shoot bullets using the spacebar.
When the game begins, a fleet of aliens fills the sky and moves accross and down the screen.
The player shoots and destroys the aliens.
If the player shoots all the aliens, a new fleet appears that moves faster than the previous fleet.
If any alien hits the player's ship or reaches the bottom of the screen, the player loses a ship.
If the player loses three ships, the game ends.

Running

$ cd src
$ python3 -m venv .venv
$ source .venv/bin/activate
# Recent versions of Mac OS X requires PyGame 2
$ (.venv) pip install -r requirements.txt
$ (.venv) python alien_invasion/app.py

Tests and Cod

$ (.venv) python -m unittest discover ./src

To run the tests with code coverage report, execute the following commands

$ (.venv) pip install coverage
$ (.venv) coverage run --source=./src/alien_invasion -m unittest discover ./src
$ (.venv) coverage html

And open ./htmlcov/index.html on browser to see the code coverage report

TODO

Difficulty levels: let the player choose the difficulty level, change game tempo and scoring based on that