Pygame独立移动图像在屏幕上

Question

我是Python和Pygame的新手。我想在pygame中有一个屏幕，并且独立地移动相同图像的多个副本。我试图把它写成一个类，然后在while循环内调用它的实例，但它不起作用。有人可以展示我如何使用class基本上做这样的事情？

Answer 1

我试图把一切都简单

例子：

import pygame 
pygame.init() 

WHITE = (255,255,255) 
BLUE = (0,0,255) 
window_size = (400,400) 
screen = pygame.display.set_mode(window_size) 
clock = pygame.time.Clock() 

class Image(): 
    def __init__(self,x,y,xd,yd): 
     self.image = pygame.Surface((40,40)) 
     self.image.fill(BLUE) 
     self.x = x 
     self.y = y 
     self.x_delta = xd 
     self.y_delta = yd 
    def update(self): 
     if 0 <= self.x + self.x_delta <= 360: 
      self.x += self.x_delta 
     else: 
      self.x_delta *= -1 
     if 0 <= self.y + self.y_delta <= 360: 
      self.y += self.y_delta 
     else: 
      self.y_delta *= -1 
     screen.blit(self.image,(self.x,self.y)) 

list_of_images = [] 
list_of_images.append(Image(40,80,2,0)) 
list_of_images.append(Image(160,240,0,-2)) 

done = False 
while not done: 
    for event in pygame.event.get(): 
     if event.type == pygame.QUIT: 
      done = True 
    screen.fill(WHITE) 
    for image in list_of_images: 
     image.update() 
    pygame.display.update() 
    clock.tick(30) 

pygame.quit() 

每个图像都可以单独从列表中通过简单地改变Image.x/y以什么叫搬到你想