ICS2O1-05 5/30/2016 Pygame Question 2 Answer

import pygame, time
from pygame.locals import *
from pygame.color import THECOLORS

pygame.init()

# Main Variables
size = width, height = (640, 480)
screen = pygame.display.set_mode(size)
face = pygame.Surface((100, 100))
faceRect = face.get_rect()
backColor = THECOLORS['white']
speed = [2, 2]

# Program Stuff
screen.fill(backColor)
face.fill(backColor)
pygame.display.set_caption("Ex 38")
clock = pygame.time.Clock()

# Draw Happy Face
pygame.draw.circle(face, THECOLORS['black'], (50, 50), 50)
pygame.draw.circle(face, THECOLORS['white'], (50, 64), 25)
pygame.draw.rect(face, THECOLORS['black'], (20, 30, 60, 36))
pygame.draw.line(face, THECOLORS['white'], (35, 20), (35, 40), 4)
pygame.draw.line(face, THECOLORS['white'], (65, 20), (65, 40), 4)

# Game Loop
pygame.display.flip()
keepGoing = True
while keepGoing:
    clock.tick(240)
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            keepGoing = False

    # Get mouse data
    mouse = pygame.mouse.get_pressed()
    pos = pygame.mouse.get_pos()

    # Mouse Position Setting
    if mouse[0]:
        faceRect.centerx = pos[0]
        faceRect.centery = pos[1]

    # Automated Movement and Error correction
    faceRect = faceRect.move(speed)
    if faceRect.left < 0:
        faceRect.left = 0
        speed[0] *= -1
    elif faceRect.right > width:
        faceRect.right = width
        speed[0] *= -1
    if faceRect.top < 0:
        faceRect.top = 0
        speed[1] *= -1
    elif faceRect.bottom > height:
        faceRect.bottom = height
        speed[1] *= -1

    # Re-draw
    screen.fill(backColor)
    screen.blit(face, faceRect)
    pygame.display.flip()

pygame.quit()