很简单的pygame游戏有一步我没懂
import pygame,syspygame.init()
size = width,height = 600,400
speed =
BLACK = 0,0,0
screen = pygame.display.set_mode(size）
pygame.display.set_caption("pygame壁球碰撞")
ball = pygame.image.load('PYG02-ball.gif')
ball_ract = ball.get_rect()
fps = 300
clock = pygame.time.Clock()
still = False
while True:
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()
elif event.type == pygame.MOUSEBUTTONDOWN:
if event.button == 1:
still = True
elif event.type == pygame.MOUSEBUTTONUP:
still = False
if event.button == 1:
ball_ract = ball_ract.move(event.pos - ball_ract.left,event.pos-ball_ract.top)#就是这里，是为了防止鼠标点击到窗口旁边，卡在旁边不动，没懂为什么这么判断
elif event.type == pygame.MOUSEMOTION:
if event.buttons == 1:
ball_ract = ball_ract.move(event.pos-ball_ract.left,event.pos-ball_ract.top)
if pygame.display.get_active() and not still:
ball_ract = ball_ract.move(speed,speed)
if ball_ract.right > width or ball_ract.left < 0:
speed = -speed
if ball_ract.right > width and ball_ract.right + speed > ball_ract.right:
speed = -speed
if ball_ract.bottom > height or ball_ract.top <0:
speed = -speed
if ball_ract.bottom > height and ball_ract.bottom + speed > ball_ract.bottom:
speed = -speed
screen.fill(BLACK)
screen.blit(ball,ball_ract)
pygame.display.update()
clock.tick(fps)
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