# Unit PYG02: Pygame Wall Ball Game version 2 节奏型
import pygame,sys
pygame.init()
size = width, height = 600, 400
speed = [1,1]
BLACK = 0, 0, 0
screen = pygame.display.set_mode(size)
pygame.display.set_caption("Pygame壁球")
ball = pygame.image.load("PYG02-ball.gif")
ballrect = ball.get_rect()
fps = 300
fclock = pygame.time.Clock()
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()
ballrect = ballrect.move(speed[0], speed[1])
if ballrect.left < 0 or ballrect.right > width:
speed[0] = - speed[0]
if ballrect.top < 0 or ballrect.bottom > height:
speed[1] = - speed[1]
screen.fill(BLACK)
screen.blit(ball, ballrect)
pygame.display.update()
fclock.tick(fps)
这里通过控制刷新帧率实现速度控制,也可以直接控制速度参数。