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
