SPACE INVADERS 4

In this project, we're going to add our aliens into the code.  

The first thing we'll want to do is keep track of the aliens.  We're going to have four aliens in our game (you're welcome to change that if you'd like), and we'll need to keep track of both what columns they are in and what row they are in at any given time.

We'll do that by adding a list to track their columns (they'll each be in their own column) and a variable to track their row (they'll all be in the same row):


Next, we need to add code to draw the aliens each time through the loop

Full project:

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