Pygame - Kann nur einen scrollenden Hintergrund

Question

sehen, also habe ich versucht, scrollenden Hintergrund mit Pygame hinzuzufügen, und ich habe getan, was this guy auf eine andere Frage beantwortet hat. und leider kann ich nur 1 der Hintergründe scrollen sehen. Hier ist, wie es aussieht:

Hauptdatei (wo bg Klasse vorhanden)

#!/usr/bin/python 
VERSION = "0.1" 
import os, sys, player 
from os import path 

try: 
    import pygame 
    from pygame.locals import * 
except ImportError, err: 
    print 'Could not load module %s' % (err) 
    sys.exit(2) 

# main variables 
WIDTH, HEIGHT, FPS = 700, 400, 30 

# initialize game 
pygame.init() 
screen = pygame.display.set_mode((WIDTH,HEIGHT)) 
pygame.display.set_caption("FlappyTroll - Python2.7") 

# background 
background = pygame.Surface(screen.get_size()) 
background = background.convert() 
background.fill((255,255,255)) 

img_dir = path.join(path.dirname(__file__), 'img') 
class Background(pygame.sprite.Sprite): 
    def __init__(self, image_file, location): 
     pygame.sprite.Sprite.__init__(self) 
     self.width = WIDTH 
     self.height = HEIGHT 
     self.image = pygame.image.load(path.join(img_dir,image_file)).convert_alpha() 
     self.image = pygame.transform.scale(self.image,(self.width,self.height)) 
     self.rect = self.image.get_rect() 
     #self.rect.left, self.rect.top = location 
     self.rect.x, self.rect.y = location 
     self.speedx = 5 
    def update(self): 
     self.rect.x -= self.speedx 
     if self.rect.x <= -self.width: 
      self.rect.x = WIDTH 

bg = Background('FlappyTrollbg.jpg', [0,0]) 
bg2 = Background('FlappyTrollbg.jpg', [WIDTH,0]) 

# blitting 
screen.blit(background,(0,0)) 
pygame.display.flip() 

# clock for FPS settings 
clock = pygame.time.Clock() 


def main(): 
    all_sprites = pygame.sprite.Group() 
    creature = pygame.sprite.Group() 
    creature.add(player.FlappyTroll()) 
    # variable for main loop 
    running = True 
    # init umbrella 
    # event loop 
    while running: 
     clock.tick(FPS) 
     for event in pygame.event.get(): 
      if event.type == pygame.QUIT: 
       running = False 


    # gets_hit = pygame.sprite.spritecollide(umb, all_sprites, True) 
    # if gets_hit: 
    #  newDrop() 

     #screen.blit(background,(0,0)) 
     bg.update() 
     bg2.update() 
     screen.fill([255, 255, 255]) 
     screen.blit(bg.image, bg.rect) 
     screen.blit(bg2.image, bg.rect) 
     # clear 

     # update 
     creature.update() 

     # draw 
     creature.draw(screen) 

     # flip the table 
     pygame.display.flip() 
    pygame.quit() 

if __name__ == '__main__': 
    main() 

Answer 1

Problem

Gut gelöst, nachdem er eine Weile darüber nachzudenken, was .blit() funktioniert, i Facepalmed so hart, dass eine neue Dimension erstellt wurde ... Alles, was ich tun musste, war, beide Bilder in
bgs = pygame.sprite.Group() und dannzu setzenbgs.draw(screen) sie.