我需要帮助添加upscrolling到pygame 2D平台

Question

我想要一些关于pygame 2D平台的帮助。下面是绘制精灵的代码，它看起来像什么，以及侧向滚动的代码，但是可以在它的整体中找到它here.

我从各种留言板上看过一些其他帖子，但我对python编码非常陌生，不知道各种东西是什么（例如主循环）

如果有必要的话，它已经有了侧到侧的滚动

提前谢谢你帮助我

class Player(pygame.sprite.Sprite):
"""
This class represents the bar at the bottom that the player controls.
"""

# -- Methods
def __init__(self):
    """ Constructor function """

    # Call the parent's constructor
    super().__init__()

    # Create an image of the block, and fill it with a color.
    # This could also be an image loaded from the disk.
    width = 40
    height = 60
    self.image = pygame.Surface([width, height])
    self.rect = self.image.get_rect()

    # Set a referance to the image rect.
    self.rect = self.image.get_rect()

    HERE IS THE CODE FOR SCROLLING SIDE-TO-SIDE

    # Keep track of the shift amount
    self.world_shift += shift_x

    # Go through all the sprite lists and shift
    for platform in self.platform_list:
        platform.rect.x += shift_x

    for enemy in self.enemy_list:
        enemy.rect.x += shift_x