更新 'Alien_Invasion.py'
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22211a4a55
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@ -11,18 +11,16 @@ from ship import Ship
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from bullet import Bullet
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from alien import Alien
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class AlienInvasion:
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"""管理游戏资源和行为的类"""
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class AlienInvasion: # 管理游戏资源和行为的类
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def __init__(self):
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"""初始化游戏并创建游戏资源"""
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def __init__(self): # 初始化游戏并创建游戏资源
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pygame.init()
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self.settings = Settings()
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self.screen = pygame.display.set_mode((0, 0), pygame.FULLSCREEN)
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self.settings.screen_width = self.screen.get_rect().width
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self.settings.screen_height = self.screen.get_rect().height
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pygame.display.set_caption("Alien Invasion")
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pygame.display.set_caption("外星人入侵")
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# 创建一个用于存储游戏统计信息的实例
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# 并创建记分牌
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@ -45,8 +43,7 @@ class AlienInvasion:
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pygame.mixer.music.load('music/music1.mp3')
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pygame.mixer.music.play(-1) # 重复循环
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def _create_fleet(self):
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"""创建外星人群"""
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def _create_fleet(self): #创建外星人群
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# 创建一个外星人并计算一行可容纳多少外星人
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# 外星人的间距为外星人的宽度
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alien = Alien(self)
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@ -65,8 +62,7 @@ class AlienInvasion:
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for alien_number in range(number_aliens_x):
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self._create_alien(alien_number, row_number)
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def _create_alien(self, alien_number, row_number):
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"""创建一个外星人并将其放在当前行"""
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def _create_alien(self, alien_number, row_number): # 创建一个外星人并将其放在当前行
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alien = Alien(self)
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alien_width,alien_height = alien.rect.size
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alien.x = alien_width + 2 * alien_width * alien_number
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@ -74,8 +70,7 @@ class AlienInvasion:
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alien.rect.y = alien.rect.height + 2 * alien.rect.height * row_number
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self.aliens.add(alien)
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def run_game(self):
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"""开始游戏的主循环"""
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def run_game(self): # 开始游戏的主循环
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while True:
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self._check_events()
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@ -86,11 +81,8 @@ class AlienInvasion:
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self._update_screen()
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def _update_aliens(self):
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"""
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检查是否有外星人位于屏幕边缘
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并更新整群外星人的位置
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"""
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def _update_aliens(self): # 检查是否有外星人位于屏幕边缘并更新整群外星人的位置
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self._check_fleet_edges()
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self.aliens.update()
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@ -101,8 +93,7 @@ class AlienInvasion:
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# 检查是否有外星人到达了屏幕底端
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self._check_aliens_bottom()
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def _update_bullets(self):
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"""更新子弹的位置并删除消失的子弹"""
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def _update_bullets(self): # 更新子弹的位置并删除消失的子弹
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#更新子弹的位置
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self.bullets.update()
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@ -113,8 +104,7 @@ class AlienInvasion:
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self._check_bullet_alien_collisions()
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def _check_bullet_alien_collisions(self):
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"""响应子弹和外星人碰撞"""
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def _check_bullet_alien_collisions(self): # 响应子弹和外星人碰撞
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# 删除发生碰撞的子弹和外星人
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collisions = pygame.sprite.groupcollide(
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@ -134,8 +124,7 @@ class AlienInvasion:
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self.stats.level += 1
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self.sb.prep_level()
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def _check_events(self):
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"""响应按键和鼠标事件"""
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def _check_events(self): #响应按键和鼠标事件
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for event in pygame.event.get():
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if event.type == pygame.QUIT:
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sys.exit()
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@ -147,8 +136,7 @@ class AlienInvasion:
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mouse_pos = pygame.mouse.get_pos()
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self._check_play_button(mouse_pos)
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def _check_play_button(self,mouse_pos):
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"""在玩家单机Play按钮时开始新游戏"""
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def _check_play_button(self,mouse_pos): #在玩家单机Play按钮时开始新游戏
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button_clicked = self.play_button.rect.collidepoint(mouse_pos)
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if button_clicked and not self.stats.game_active:
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# 重置游戏设置
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@ -172,8 +160,7 @@ class AlienInvasion:
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# 隐藏鼠标光标
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pygame.mouse.set_visible(False)
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def _check_keydown_events(self, event):
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"""响应按键"""
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def _check_keydown_events(self, event): # 响应按键
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if event.key == pygame.K_RIGHT:
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self.ship.moving_right = True
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elif event.key == pygame.K_LEFT:
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@ -183,21 +170,18 @@ class AlienInvasion:
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elif event.key == pygame.K_SPACE:
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self._fire_bullet()
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def _check_keyup_events(self,event):
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"""响应松开"""
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def _check_keyup_events(self,event): # 响应松开
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if event.key == pygame.K_RIGHT:
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self.ship.moving_right = False
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elif event.key == pygame.K_LEFT:
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self.ship.moving_left = False
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def _fire_bullet(self):
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"""创建一颗子弹，并将其加入编组bullets中"""
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def _fire_bullet(self): # 创建一颗子弹，并将其加入编组bullets中
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if len(self.bullets) < self.settings.bullets_allowed:
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new_bullet = Bullet(self)
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self.bullets.add(new_bullet)
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def _update_screen(self):
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"""更新屏幕上的图像，并切换到新屏幕"""
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def _update_screen(self): # 更新屏幕上的图像，并切换到新屏幕
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self.screen.fill(self.settings.bg_color)
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self.ship.blitme()
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for bullet in self.bullets.sprites():
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@ -213,21 +197,18 @@ class AlienInvasion:
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pygame.display.flip()
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def _check_fleet_edges(self):
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"""有外星人到达边缘时采取相应的措施"""
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def _check_fleet_edges(self): # 有外星人到达边缘时采取相应的措施
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for alien in self.aliens.sprites():
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if alien.check_edges():
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self._change_fleet_direction()
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break
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def _change_fleet_direction(self):
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"""将整个外星人下移，并改变它们的方向"""
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def _change_fleet_direction(self): #将整个外星人下移，并改变它们的方向
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for alien in self.aliens.sprites():
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alien.rect.y += self.settings.fleet_drop_speed
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self.settings.fleet_direction *= -1
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def _ship_hit(self):
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"""响应飞船被外星人撞到"""
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def _ship_hit(self): #响应飞船被外星人撞到
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if self.stats.ships_left > 0:
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# 将ships_left减一并更新记分牌
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self.stats.ships_left -= 1
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@ -247,8 +228,7 @@ class AlienInvasion:
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self.stats.game_active = False
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pygame.mouse.set_visible(True)
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def _check_aliens_bottom(self):
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"""检查是否有外星人到达了屏幕底端"""
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def _check_aliens_bottom(self): #检查是否有外星人到达了屏幕底端
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screen_rect = self.screen.get_rect()
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for alien in self.aliens.sprites():
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if alien.rect.bottom >= screen_rect.bottom:
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