Question

我正在使用pygame构建一个简单的游戏，这个游戏的功能是控制图像并使其向左/向上/向下移动但是我遇到了这个问题，图像在向下或向下移动时重复{{ 3}}

import pygame
pygame.init()
display_width = 1080
display_height = 1080

screen = pygame.display.set_mode((display_width,display_height))

Clock = pygame.time.Clock()
pygame.display.set_caption('DEMO')
black=(0,0,0)
white=(255,255,255)
red=(255,0,0)
green=(0,255,0)
blue=(0,0,255)
screen.fill(white)

face=pygame.image.load('H:\\brain.jpg')

 def brain(x,y):
     screen.blit(face,(x,y))

 x1 =(display_width*0.5)
 y1 =(display_height*0.5)
  x_change =0
   y_change =0
  gameExit = False

while not gameExit:
for event in pygame.event.get():

    if event.type == pygame.QUIT:
        gameExit = True

    if event.type == pygame.KEYDOWN:
        if event.key == pygame.K_LEFT:
            x_change = -5
        elif  event.key == pygame.K_RIGHT:
            x_change = 5
        elif event.key == pygame.K_DOWN:
            y_change = 5
        elif event.key == pygame.K_UP:
            y_change = -5
    if event.type == pygame.KEYUP:
        if event.key == pygame.K_LEFT or event.key == pygame.K_RIGHT:
            x_change = 0
    if event.type == pygame.KEYUP:
        if event.key == pygame.K_DOWN or event.key == pygame.K_UP:
            y_change = 0

x1 += x_change
y1 += y_change
print(event)
brain(x1,y1)
pygame.display.update()
Clock.tick(100)
pygame.quit()
quit()

Answer 1

你必须在while循环的每次迭代中blit你的背景：

 while True:
     for event in pygame.event.get():

         #get keyboard input


     screen.fill((255, 255, 255)) #or, you can draw a background image

     x1 += x_change
     y1 += y_change
     print(event)
     brain(x1,y1)
     pygame.display.update()

Answer 2

您需要清空旧图像，以及绘制新图像。您看到的是残留物：前一幅图像中未被新图像的白色（背景色）覆盖的部分。

处理此问题的一种简单方法是将绘制的图像展开为包含至少与动画大小一样大的白色边框。

Pygame移动物体/图像重复自己

2 个答案: