python和pygame圖像移動

好吧，我的代碼在下面，現在我是pygame的新手，並試圖找出如何在屏幕上移動圖像。從我所見過的pygame中，下面的代碼應該將圖像向上移動（現在唯一可能的移動）。但是，當我推動圖像不動。 Python正在認識到我正在向上推，因爲它在系統托盤中打印，但是沒有任何動作，有人可以幫忙嗎？python和pygame圖像移動

import pygame, sys 
from pygame.locals import * 

FPS = 30 


WIN_WIDTH = 800 
WIN_HEIGHT = 600 
HALF_WIDTH = int(WIN_WIDTH/2) 
HALF_HEIGHT = int(WIN_HEIGHT/2) 

COLOR = (255, 0, 255) 
IMAGE = pygame.image.load('squirrel.png') 
STARTSIZE = 25 

LEFT = 'left' 

def main(): 
    pygame.init() 
    FPS_CLOCK = pygame.time.Clock() 
    movement = 1 

    moveUp = False 

    DISPLAY_SURFACE = pygame.display.set_mode((WIN_WIDTH, WIN_HEIGHT)) 

    while True: 
     DISPLAY_SURFACE.fill(COLOR) 

     playerObj = {'surface': pygame.transform.scale(IMAGE, (STARTSIZE, STARTSIZE)), 
        'facing': LEFT, 
        'size': STARTSIZE, 
        'x': HALF_WIDTH, 
        'y': HALF_HEIGHT} 

     playerObj['rect'] = pygame.Rect((playerObj['x'], playerObj['y'], playerObj['size'], playerObj['size'])) 
     DISPLAY_SURFACE.blit(playerObj['surface'], playerObj['rect']) 


     for event in pygame.event.get(): 

      if event.type == KEYDOWN: 
       if event.key == K_UP: 
        moveUp = True 

      if event.type == KEYUP: 
       if event.key == K_UP: 
        moveUp = False 

      elif event.type == QUIT: 
       pygame.quit() 
       sys.exit() 

     if moveUp: 
      playerObj['y'] += movement 
      print("moving up") 

     else: 
      print('stopped') 

     pygame.display.update() 
     FPS_CLOCK.tick(FPS) 

if __name__ == '__main__': 
    main()

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2013-01-09 user1758231

你正在創建每次while循環遍歷所以你不會看到它移動（因爲它是設置它的「Y」值每次HALF_HEIGHT）時間新playerObj。將playerObj定義移出while循環。

來源

2013-01-09 06:53:45 timc

我試過，仍然沒有任何動靜，我想這可能是我的問題早，但無論哪種方式，它不移動圖像 – user1758231

那麼*就是問題的一部分。另一個可能與你的blit命令有關，不幸的是我現在無法正確測試。嘗試將DISPLAY_SURFACE.fill（color）和DISPLAY_SURFACE.blit（..）移至pygame.display.update（） – timc

之前哦，我明白了，謝謝您的建議！我實際上需要將playerObj移出，但將playerObj保留在while循環中，現在它的工作雖然謝謝！ – user1758231

在進入while循環之前，您必須先創建playerObj，然後每次只繪製它到DISPLAY_SURFACE。另外，增加字典中的鍵y也無濟於事，您必須修改rect。微創解決方案將是：

import pygame, sys 
from pygame.locals import * 

FPS = 30 


WIN_WIDTH = 800 
WIN_HEIGHT = 600 
HALF_WIDTH = int(WIN_WIDTH/2) 
HALF_HEIGHT = int(WIN_HEIGHT/2) 

COLOR = (255, 0, 255) 
IMAGE = pygame.image.load('squirrel.png') 
STARTSIZE = 25 

LEFT = 'left' 

def main(): 
    pygame.init() 
    FPS_CLOCK = pygame.time.Clock() 
    movement = 1 

    moveUp = False 

    DISPLAY_SURFACE = pygame.display.set_mode((WIN_WIDTH, WIN_HEIGHT)) 

    playerObj = {'surface': pygame.transform.scale(IMAGE, (STARTSIZE, STARTSIZE)), 
        'facing': LEFT, 
        'size': STARTSIZE, 
        'x': HALF_WIDTH, 
        'y': HALF_HEIGHT} 

    playerObj['rect'] = pygame.Rect((playerObj['x'], playerObj['y'], playerObj['size'], playerObj['size'])) 

    while True: 
     DISPLAY_SURFACE.fill(COLOR) 
     DISPLAY_SURFACE.blit(playerObj['surface'], playerObj['rect']) 
     for event in pygame.event.get(): 

      if event.type == KEYDOWN: 
       if event.key == K_UP: 
        moveUp = True 

      if event.type == KEYUP: 
       if event.key == K_UP: 
        moveUp = False 

      elif event.type == QUIT: 
       pygame.quit() 
       sys.exit() 

     if moveUp: 
      playerObj['rect'].y -= movement 
      print("moving up") 

     else: 
      print('stopped') 

     pygame.display.update() 
     FPS_CLOCK.tick(FPS) 

if __name__ == '__main__': 
    main()

它的工作原理，我自己試了一下。但是你應該重構你的代碼，不需要在你的字典中攜帶最初的x，y等值。

編輯在所有四個方向的移動，這將是：

import pygame, sys 
from pygame.locals import * 

FPS = 30 


WIN_WIDTH = 800 
WIN_HEIGHT = 600 
HALF_WIDTH = int(WIN_WIDTH/2) 
HALF_HEIGHT = int(WIN_HEIGHT/2) 

COLOR = (255, 0, 255) 
IMAGE = pygame.image.load('squirrel.png') 
STARTSIZE = 25 

LEFT = 'left' 

def move_rect(rect, key, distance): 
    if key == K_UP: 
     rect.y-=distance 
    elif key == K_DOWN: 
     rect.y+=distance 
    elif key == K_LEFT: 
     rect.x-=distance 
    elif key == K_RIGHT: 
     rect.x+=distance 

def main(): 
    pygame.init() 
    FPS_CLOCK = pygame.time.Clock() 
    movement = 1 

    key2mvmt = {K_UP:False, K_DOWN:False, K_LEFT:False, K_RIGHT:False} 

    DISPLAY_SURFACE = pygame.display.set_mode((WIN_WIDTH, WIN_HEIGHT)) 

    playerObj = {'surface': pygame.transform.scale(IMAGE, (STARTSIZE, STARTSIZE)), 
        'facing': LEFT, 
        'size': STARTSIZE, 
        'x': HALF_WIDTH, 
        'y': HALF_HEIGHT} 

    playerObj['rect'] = pygame.Rect((playerObj['x'], playerObj['y'], playerObj['size'], playerObj['size'])) 

    while True: 
     DISPLAY_SURFACE.fill(COLOR) 
     DISPLAY_SURFACE.blit(playerObj['surface'], playerObj['rect']) 
     for event in pygame.event.get(): 

      if event.type == KEYDOWN: 
       if key2mvmt.has_key(event.key): 
        key2mvmt[event.key]= True 

      if event.type == KEYUP: 
       if key2mvmt.has_key(event.key): 
        key2mvmt[event.key]= False 

      elif event.type == QUIT: 
       pygame.quit() 
       sys.exit() 

     for k in key2mvmt.keys(): 
      if key2mvmt[k]: 
       move_rect(playerObj['rect'], k, movement) 

     else: 
      print('stopped') 

     pygame.display.update() 
     FPS_CLOCK.tick(FPS) 

if __name__ == '__main__': 
    main()

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2013-01-09 07:07:45

python和pygame圖像移動

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