Here's our game from an earlier stage but most of the code is hidden. We've added a new function called score_points.

Edit the function so that a new parameter called points is added to player_score.

The variable player_score should increase each time Dog tags Cat with pie, and decrease each time that Cat tags Dog with a sandwich.

Note: When you're done, click "Run" to play. When Dog scores 6 points, you will move on to the next puzzle.