如何Pygame的移动雪碧

Question

我尝试让我的图像（鸟）来上下移动屏幕上，但我不能弄清楚如何在这里做到这一点是我尝试我确定它的路要走，但我尝试以图如果任何人都可以帮助，那就太棒了！

import pygame 
import os 

screen = pygame.display.set_mode((640, 400)) 

running = 1 

while running: 
    event = pygame.event.poll() 
    if event.type == pygame.QUIT: 
     running = 0 
    screen.fill([255, 255, 255]) 
    clock = pygame.time.Clock() 
    clock.tick(0.5) 
    pygame.display.flip() 

    bird = pygame.image.load(os.path.join('C:\Python27', 'player.png')) 
    screen.blit(bird, (0, 0)) 

    pygame.display.update() 

class game(object): 
    def move(self, x, y): 
     self.player.center[0] += x 
     self.player.center[1] += y 


    if event.key == K_UP: 
     player.move(0,5) 
    if event.key == K_DOWN: 
     player.move(0,-5) 

game() 

即时试图让它下移的向下按下按钮和最多的UP按键

Answer 1

如前所述通过ecline6，鸟是你最担心的在这一点上。

考虑阅读this book ..

现在，首先，让我们清理你的代码...

import pygame 
import os 

# let's address the class a little later.. 

pygame.init() 
screen = pygame.display.set_mode((640, 400)) 
# you only need to call the following once,so pull them out of the while loop. 
bird = pygame.image.load(os.path.join('C:\Python27', 'player.png')) 
clock = pygame.time.Clock() 

running = True 
while running: 
    event = pygame.event.poll() 
    if event.type == pygame.QUIT: 
     running = False 

    screen.fill((255, 255, 255)) # fill the screen 
    screen.blit(bird, (0, 0)) # then blit the bird 

    pygame.display.update() # Just do one thing, update/flip. 

    clock.tick(40) # This call will regulate your FPS (to be 40 or less) 

现在，您的“鸟”是不动的原因是：
当你的blit图像，即：screen.blit(bird, (0, 0))，
的(0,0)是恒定的，所以它不会移动。

下面是最后的代码，你想要的输出（尝试）并阅读注释：

import pygame 
import os 

# it is better to have an extra variable, than an extremely long line. 
img_path = os.path.join('C:\Python27', 'player.png') 

class Bird(object): # represents the bird, not the game 
    def __init__(self): 
     """ The constructor of the class """ 
     self.image = pygame.image.load(img_path) 
     # the bird's position 
     self.x = 0 
     self.y = 0 

    def handle_keys(self): 
     """ Handles Keys """ 
     key = pygame.key.get_pressed() 
     dist = 1 # distance moved in 1 frame, try changing it to 5 
     if key[pygame.K_DOWN]: # down key 
      self.y += dist # move down 
     elif key[pygame.K_UP]: # up key 
      self.y -= dist # move up 
     if key[pygame.K_RIGHT]: # right key 
      self.x += dist # move right 
     elif key[pygame.K_LEFT]: # left key 
      self.x -= dist # move left 

    def draw(self, surface): 
     """ Draw on surface """ 
     # blit yourself at your current position 
     surface.blit(self.image, (self.x, self.y)) 


pygame.init() 
screen = pygame.display.set_mode((640, 400)) 

bird = Bird() # create an instance 
clock = pygame.time.Clock() 

running = True 
while running: 
    # handle every event since the last frame. 
    for event in pygame.event.get(): 
     if event.type == pygame.QUIT: 
      pygame.quit() # quit the screen 
      running = False 

    bird.handle_keys() # handle the keys 

    screen.fill((255,255,255)) # fill the screen with white 
    bird.draw(screen) # draw the bird to the screen 
    pygame.display.update() # update the screen 

    clock.tick(40)