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向各位大佬求助,刚入门不到一个月的新人,在学习《python编程:从入门到实践》,第一个项目第12章“12.8.3将子弹存储到编组中”一直报错:
Traceback (most recent call last):
File "D:/snake/venv/Alien_Invasion/main_game.py", line 2, in <module>
from pygame import Group
ImportError: cannot import name 'Group' from 'pygame' (D:\snake\venv\lib\site-packages\pygame\__init__.py)[/code]
- import pygame
- from settings import Settings
- from ship import Ship
- import game_functions as gf
- import bullet
- def run_game():
- #初始化游戏并创建一个屏幕对象
- pygame.init()
- ai_settings = Settings()
- screen = pygame.display.set_mode((ai_settings.screen_width,ai_settings.screen_height))
- pygame.display.set_caption("Alien_Invasion")
- #创建一艘飞船
- ship = Ship(ai_settings, screen)
- #创建一个子弹编组
- bullets = Group()
- #游戏主循环
- while True:
- gf.check_events(ai_settings, screen, ship, bullets)
- ship.update_ship()
- bullets.update_bullets()
- gf.update_screen(ai_settings, screen, ship, bullets)
- run_game()
复制代码
- import pygame
- class Bullet(pygame.sprite.Sprite):
- """一个对飞船发射的子弹管理的类"""
- def __init__(self, ai_settings, screen, ship):
- """在飞船所在位置创建一个子弹对象"""
- self.screen = screen
- super(Bullet, self).__init__()
- #在(0,0)处创建一个表示子弹的矩形,在放置到正确的位置
- self.rect = pygame.Rect(0, 0, ai_settings.bullet_width,
- ai_settings.bullet_height)
- self.rect.centerx = ship.rect.centerx
- self.rect.top = ship.rect.top
- #存储用小数表示的子弹位置
- self.y = float(self.rect.y)
- self.color = ai_settings.bullet_color
- self.speed_factor = ai_settings.bullet_speed_factor
- def update_bullets(self):
- """向上移动子弹"""
- #更新浮点数的子弹纵坐标
- self.y -= self.speed_factor
- #更新子弹纵坐标位置
- self.rect.y = self.y
- def draw_bullet(self):
- """在屏幕上绘制子弹"""
- pygame.draw.rect(screen, self.color, self.rect)
复制代码
- import sys
- import pygame
- def check_keydown_event(event, ai_settings, screen, ship, bullets):
- if event.key == pygame.K_RIGHT:
- ship.moving_right = True
- elif event.key == pygame.K_LEFT:
- ship.moving_left = True
- #创建一个子弹,并加入bullets编组
- elif event.key == pygame.K_SPACE:
- new_bullet = Bullet(ai_settings, screen, ship)
- bullets.add(new_bullet)
- def check_keyup_event(event, ship):
- if event.key == pygame.K_RIGHT:
- ship.moving_right = False
- elif event.key == pygame.K_LEFT:
- ship.moving_left = False
- def check_events(ai_settings, screen, ship, bullets):
- """响应按键和鼠标事件"""
- for event in pygame.event.get():
- if event.type == pygame.QUIT:
- sys.exit()
- elif event.type == pygame.KEYDOWN:
- check_keydown_event(ai_settings, screen, ship, bullets)
- elif event.type == pygame.KEYUP:
- check_keyup_event(event, ship)
- def update_screen(ai_settings, screen, ship, bullets):
- """更新屏幕上的图像并切换到新屏幕"""
- #每次循环时都重新绘制屏幕
- screen.fill(ai_settings.bg_color)
- #在飞船和外星人后面重绘所有子弹
- for bullet in bullets.sprites():
- bullet.draw_bullet()
- ship.blitme()
- #最近绘制屏幕可见
- pygame.display.flip()
复制代码
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