Program Arcade Games: With Python and Pygame, Fourth Edition

CHAPTER 10

Functions

Functions are used for two reasons. First, they make code easier to read and understand. Second, they allow code to be used more than once.

Imagine a set of code that draws a tree as shown below. To do this, the programmer executes the following commands:

pygame.draw.rect(screen, BROWN, [60, 400, 30, 45])pygame.draw.polygon(screen, GREEN, [[150, 400], [75, 250], [0, 400]])pygame.draw.polygon(screen, GREEN, [[140, 350], [75, 230], [10, 350]])

Simple Tree

Those three lines of code don’t really pop out as obviously drawing ...