'''lecture_32_pacman.py
Simple implementation of the game Pac-Man
Oliver W. Layton
CS 151: Computational Thinking: Visual Media
Spring 2021

TODO:
Create `PacMan` class
    - Constructor: Setup black screen, custom pac-man turtle shape
UPDATE 1: Create `setupEvents` method with keypress events, and `play` to listen for events
    and start main game loop.
UPDATE 2: Create `placePellets(nPellets)` which returns a list of pellets
    (Turtle objects that are the pellets).
    - Add timer event for checking collisions with pellets, have the method queue up another timer event
    so that it can repeat.
UPDATE 3: Use "mouse" (or trackpad) clicks to perform an action (e.g. change background color)
    - Create changeColor(self, x, y)
'''
import turtle