所以我有一个我用 PyGame 制作的平台游戏，一切正常，所以我现在正努力让它变得更加丰富多彩。所以我改变的代码曾经是：
def draw(self, screen):
""" Draw everything on this level. """
# Draw the background
screen.fill(BLUE)
我将其更改为：
def draw(self, screen):
""" Draw everything on this level. """
# Image from http://freepik
background_image = pygame.image.load("pink background.jpg").convert()
# Draw the background
screen.blit(background_image, [0, 0])
让粉红色的背景成为背景 :) 现在这是我在代码中更改的唯一内容，但现在一切都移动得慢得多，例如由用户控制的播放器和移动平台。有两个级别，我没有更改第二个级别背景的代码，玩家仍然可以在那里正常移动:)
我确实认为我可能会改变这条线：
# Limit to 60 frames per second
clock.tick(60)
偶然，但它仍然完全一样。
我希望有人可以提供帮助:)并提前谢谢你:)
错误发生在此代码中的某处：`
定义主（）：
pygame.init()
# Set the height and width of the screen
size = [SCREEN_WIDTH, SCREEN_HEIGHT]
screen = pygame.display.set_mode(size)
pygame.display.set_caption('Platformer with moving platforms')
# Create the player
player = Player()
# Create all the levels
level_list = []
level_list.append(Level_01(player))
# Set the current level
current_level_no = 0
current_level = level_list[current_level_no]
active_sprite_list = pygame.sprite.Group()
player.level = current_level
player.rect.x = 200
player.rect.y = SCREEN_HEIGHT - player.rect.height - 30
active_sprite_list.add(player)
# Loop until the user clicks the close button.
done = False
# Used to manage how fast the screen updates
clock = pygame.time.Clock()
# -------- Main Program Loop --------
while not done:
for event in pygame.event.get():
if event.type == pygame.QUIT:
done = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT:
player.go_left()
if event.key == pygame.K_RIGHT:
player.go_right()
if event.key == pygame.K_UP:
player.jump()
if event.type == pygame.KEYUP:
if event.key == pygame.K_LEFT and player.change_x < 0:
player.stop()
if event.key == pygame.K_RIGHT and player.change_x > 0:
player.stop()
# Update the player.
active_sprite_list.update()
# Update items in the level
current_level.update()
# If the player gets near the right side, shift the world left (-x)
if player.rect.right >= 500:
diff = player.rect.right - 500
player.rect.right = 500
current_level.shift_world(-diff)
# If the player gets near the left side, shift the world right (+x)
if player.rect.left <= 120:
diff = 120 - player.rect.left
player.rect.left = 120
current_level.shift_world(diff)
# If the player touches the floor they die.
if player.rect.y == SCREEN_HEIGHT - player.rect.height:
done = True
# If the player gets to the end of the level, go to the next level
current_position = player.rect.x + current_level.world_shift
if current_position < current_level.level_limit:
all_lines = []
list_of_files = os.listdir()
if username1 in list_of_files:
file1 = open(username1, "r")
for line in file1:
all_lines.append(line)
all_lines[2] = str(1)
with open(username1, 'w') as filehandle:
for listitem in all_lines:
filehandle.write(str(listitem))
done = True
# ALL CODE TO DRAW SHOULD GO BELOW THIS COMMENT
current_level.draw(screen)
active_sprite_list.draw(screen)
# Select the font to use, size, bold, italics
# ALL CODE TO DRAW SHOULD GO ABOVE THIS COMMENT
# Limit to 60 frames per second
clock.tick(60)
# Go ahead and update the screen with what we've drawn.
pygame.display.flip()
# Be IDLE friendly. If you forget this line, the program will 'hang'
# on exit.
pygame.quit()
if __name__ == "__main__":
main()
`