你在draw_sprite()中有事件循环，所以它一直运行到游戏结束，window.set_background永远不会执行。在

您的代码构造不正确。在

我试着更正它，稍后再发送代码。在

编辑：

如何组织代码的简单示例。在

现在它在一个文件中。在Pygame中总是一个窗口，所以不需要使Panel+Widnow。在run()中有一个事件循环。所有代码都在窗口内(创建精灵，更改背景，绘图等)。在

我将精灵添加到(python)列表并从列表中绘制所有精灵-player is exception-所以我只能从列表中移除最后一个精灵：/If您需要更好的东西，请参见pygame.sprite.Sprite()和pygame.sprite.Group()。在

使用Arrows移动红球，Space暂停游戏，ESC退出。在

最后我附上了我的位图。在import pygame

#from pygame.locals import *

#

# class for single sprite

#

class MySprite():

def __init__(self, image, x, y):

self.image = pygame.image.load(image)

image_rect = self.image.get_rect()

# Rect class to use "Sprite collision detect" - in the future

# In rect you have sprite position and size

# You can use self.rect.x, self.rect.y, self.rect.width, self.rect.height

# and self.rect.center, self.rect.centerx, self.rect.top, self.rect.bottomright etc.

self.rect = pygame.rect.Rect(x, y, image_rect.width, image_rect.height)

def draw(self, screen):

screen.blit(self.image, self.rect)

#

# class for player

#

class MyPlayer(MySprite):

def __init__(self, image, x, y):

# parent constructor always as a first in __init__

MySprite.__init__(self, image, x, y)

self.speed_x = self.speed_y = 0

# -

def set_speed(self, x, y):

self.speed_x = x

self.speed_y = y

# -

def update(self):

self.rect.x += self.speed_x

self.rect.y += self.speed_y

if self.rect.centerx < 0 :

self.rect.centerx = 800

elif self.rect.centerx > 800 :

self.rect.centerx = 0

if self.rect.centery < 0 :

self.rect.centery = 600

elif self.rect.centery > 600 :

self.rect.centery = 0

#

class Window():

def __init__(self, width, height):

#

self.rect = pygame.Rect(0, 0, width, height)

# or

self.width, self.height = width, height

#

pygame.init()

# most users and tutorials call it "screen"

self.screen = pygame.display.set_mode(self.rect.size)

#############################################################

self.foreground = None

self.background = None

self.set_background("background.jpg")

self.set_foreground("ball3.png")

#################################################

self.player = MyPlayer("ball1.png", 100, 200)

self.sprites_list = []

self.add_sprite(MySprite("ball2.png", 100, 400))

self.add_sprite(MySprite("ball2.png", 300, 500))

self.add_sprite(MySprite("ball2.png", 300, 200))

self.remove_last_sprite()

# -

# red text "PAUSE"

font = pygame.font.SysFont("", 72)

self.text_pause = font.render("PAUSE", True, (255, 0, 0))

# center text on screen

screen_center = self.screen.get_rect().center

self.text_pause_rect = self.text_pause.get_rect(center=screen_center)

#

def add_sprite(self, sprite):

self.sprites_list.append(sprite)

#

def remove_last_sprite(self):

if self.sprites_list:

del self.sprites_list[-1]

#

def draw_sprites(self, screen):

for sprite in self.sprites_list:

sprite.draw(screen)

#

def draw_background(self, screen):

screen.fill((0,64,0)) # clear screen to green

if self.background:

screen.blit(self.background, (0,0))

#

def draw_foreground(self, screen):

if self.foreground:

screen.blit(self.foreground, (0,0))

#

def draw_world(self, image):

temp = pygame.Surface(self.rect.size, pygame.SRCALPHA, 32).convert_alpha()

image_rect = image.get_rect()

for x in range(0, self.rect.width, 60):

for y in range(0,self.rect.width, 60):

temp.blit(image,(x,y))

return temp

#

def set_foreground(self, image=None):

if image:

img = pygame.image.load(image)

self.foreground = self.draw_world(img)

#

def set_background(self, image=None):

if image:

self.background = pygame.image.load(image)

#

def run(self):

clock = pygame.time.Clock()

RUNNING = True

PAUSED = False

while RUNNING:

# - events -

for event in pygame.event.get():

if event.type == pygame.QUIT:

RUNNING = False

if event.type == pygame.KEYDOWN:

if event.key == pygame.K_ESCAPE:

RUNNING = False

elif event.key == pygame.K_SPACE:

PAUSED = not PAUSED

if event.key == pygame.K_UP:

self.player.set_speed(0,-10)

elif event.key == pygame.K_DOWN:

self.player.set_speed(0,10)

elif event.key == pygame.K_LEFT:

self.player.set_speed(-10,0)

elif event.key == pygame.K_RIGHT:

self.player.set_speed(10,0)

if event.type == pygame.KEYUP:

if event.key in (pygame.K_UP, pygame.K_DOWN, pygame.K_LEFT, pygame.K_RIGHT):

self.player.set_speed(0,0)

# - changes

if not PAUSED:

# change elements position

self.player.update()

# - draws -

self.draw_background(self.screen)

self.draw_foreground(self.screen)

self.draw_sprites(self.screen)

self.player.draw(self.screen)

if PAUSED:

# draw pause string

self.screen.blit(self.text_pause, self.text_pause_rect.topleft)

pygame.display.update()

# - FPS -

clock.tick(25) # 25 Frames Per Seconds

# - finish -

pygame.quit()

#

Window(800,600).run()

球1.png

ball2.png

球3.png

在背景.jpg

截图