Teach Your Kids To Code: A Parent-friendly Guide to Python Programming

234 Chapter 10

Figure 10-2: The Smiley Pong game we’ll build

The first feature we’ll add to the former SmileyBounce2.py app

is the paddle.

Drawing a Board and Game Pieces

In our finished game, the paddle will move along the bottom of the

screen, following the mouse’s movement as the user tries to keep

the ball from hitting the bottom edge.

To get the paddle started, we’ll add this information to the

setup section of our app:

WHITE = (255,255,255)

paddlew = 200

paddleh = 25

paddlex = 300

paddley = 550

These variables will help us create a paddle that is simply a

white rectangle of width 200 and height 25. We’ll want the coordi-

nates of its top-left corner to start at (300, 550) so that the paddle

starts off slightly above the bottom edge and centered horizontally

on the 800 × 600 screen.