第十三章

import pygame
import sys
pygame.init()
screen = pygame.display.set_mode((640,480))
ball = pygame.image.load('small ball1(1)(1).jpg')
ballrect = ball.get_rect()
print(ballrect)
speed = [5,5]
clock = pygame.time.Clock()
while True:
    clock.tick(60)
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            sys.exit()
    ballrect = ballrect.move(speed)
    if ballrect.left < 0 or ballrect.right > 640:
        speed[0] = -speed[0]
    if ballrect.top < 0 or ballrect.bottom > 480:
        speed[1] = -speed[1]
    screen.fill((0,0,0))
    screen.blit(ball,ballrect)
    pygame.display.flip()
pygame.quit()