时间戳

首页 > 解决方案 > 按下空间时球不会移动

python - 按下空间时球不会移动

问题描述

有人在这段代码中看到问题吗？试图让球/子弹从左桨中出来并在击中右桨时消失，但是当我尝试运行代码时，我一般看不到球。我认为它隐藏在左桨后面，但当我在太空时它也不会移动。我正在尝试制作一个游戏，其中左边的玩家应该子弹，右边的玩家会试图躲避它们。现在我被困在子弹上。请帮忙。谢谢！

import pygame 

pygame.init()

screen_width = 1280
screen_height = 720
window = pygame.display.set_mode((screen_width, screen_height),0,0)

pygame.display.set_caption("PongGame")

clock = pygame.time.Clock()
#background
background = pygame.image.load("C:/Users/teamb/Desktop/PythonWorkspace/myGame/background.png")

#paddle image
paddle = pygame.image.load("C:/Users/teamb/Desktop/PythonWorkspace/myGame/paddle.png")
paddle_size = paddle.get_rect().size

#left paddle
left_paddle_width = paddle_size[0]
left_paddle_height = paddle_size[1]
left_paddle_xpos = 10
left_paddle_ypos = (screen_height/2 - left_paddle_height/2)

to_x = 0
to_y = 0

character_speed = 10

#right paddle
right_paddle_width = paddle_size[0]
right_paddle_height = paddle_size[1]
right_paddle_xpos = screen_width - right_paddle_width - 10
right_paddle_ypos = (screen_height/2 - left_paddle_height/2)

to_y_2 = 0
# ball
bullet = pygame.image.load("C:/Users/teamb/Desktop/PythonWorkspace/myGame/ball.png")
bullet_size = bullet.get_rect().size
bullet_width = bullet_size[0]
#make the bullet be able to shoot multiple at the same time
bullets = []
#bulllet speed
bullet_speed = 15


running = True
while running:
   dt = clock.tick(60)
   
   for event in pygame.event.get():
      if event.type == pygame.QUIT:
         running = False
   #left paddle
      if event.type == pygame.KEYDOWN:
         if event.key == pygame.K_w:
            to_y -= character_speed
         elif event.key == pygame.K_s:
             to_y += character_speed
         elif event.key == pygame.K_SPACE:
            bullet_ypos = left_paddle_ypos
            bullet_xpos = left_paddle_xpos
            bullets.append([bullet_xpos, bullet_ypos])

      if event.type == pygame.KEYUP:
         if event.key == pygame.K_w or event.key == pygame.K_s:
            to_y = 0
   #right paddle
      if event.type == pygame.KEYDOWN:
         if event.key == pygame.K_UP:
            to_y_2 -= character_speed
         elif event.key == pygame.K_DOWN:
             to_y_2 += character_speed

      if event.type == pygame.KEYUP:
         if event.key == pygame.K_UP or event.key == pygame.K_DOWN:
            to_y_2 = 0

   left_paddle_ypos += to_y
   right_paddle_ypos += to_y_2

   bullets = [ [w[0] - bullet_speed, w[1]] for w in bullets] #shoot the bullet 

   bullets = [ [w[0], w[1]] for w in bullets if w[0] == right_paddle_xpos and w[1] == right_paddle_ypos]

   #barrier for the paddles to not go outside the screen.
   if left_paddle_ypos < 0:
      left_paddle_ypos =  0
   
   if left_paddle_ypos > screen_height - left_paddle_height:
      left_paddle_ypos = screen_height - left_paddle_height

   window.blit(background,(0,0))
   
   window.blit(paddle, (left_paddle_xpos,left_paddle_ypos))
   window.blit(paddle, (right_paddle_xpos, right_paddle_ypos))

   for bullet_xpos, bullet_ypos in bullets:      
      window.blit(bullet, (bullet_xpos, bullet_ypos))

   pygame.display.update()

pygame.quit()

标签： pythonpygame

解决方案

需要进行两项更改：

  • 删除此行。它在显示项目符号之前清除项目符号列表。

    #bullets = [ [w[0], w[1]] for w in bullets if w[0] == right_paddle_xpos and w[1] == right_paddle_ypos]

  • 更改此行 (-到+)。它将子弹射向错误的方向。

    bullets = [ [w[0] + bullet_speed, w[1]] for w in bullets] #shoot the bullet

推荐阅读