更新 'Alien_Invasion.py'

Alien_Invasion.py

@@ -137,9 +137,71 @@ class AlienInvasion:
             self.sb.prep_level()
 
     def _check_events(self):
+        """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:
+                self._check_keydown_events(event)
+            elif event.type == pygame.KEYUP:
+                self._check_keyup_events(event)
+            elif event.type == pygame.MOUSEBUTTONDOWN:
+                mouse_pos = pygame.mouse.get_pos()
+                self._check_play_button(mouse_pos)
+
+    def _check_play_button(self,mouse_pos):
+        """在玩家单机Play按钮时开始新游戏"""
+        button_clicked = self.play_button.rect.collidepoint(mouse_pos)
+        if button_clicked and not self.stats.game_active:
+            # 重置游戏设置
+            self.settings.initialize_dynamic_settings()
+
+            # 重置游戏统计信息
+            self.stats.reset_stats()
+            self.stats.game_active = True
+            self.sb.prep_score()
+            self.sb.prep_level()
+            self.sb.prep_ships()
+
+            # 清空余下的外星人和子弹
+            self.aliens.empty()
+            self.bullets.empty()
+
+    elif event.type == pygame.KEYDOWN:
+            # 创建一群新的外星人并让飞船居中
+            self._create_fleet()
+            self.ship.center_ship()
+
+            # 隐藏鼠标光标
+            pygame.mouse.set_visible(False)
+
+    def _check_keydown_events(self, event):
+        """响应按键"""
+        if event.key == pygame.K_RIGHT:
+            self.ship.moving_right = True
+    elif event.key == pygame.K_LEFT:
+        elif event.key == pygame.K_LEFT:
+            self.ship.moving_left = True
+        elif event.key == pygame.K_q:
+            sys.exit()
+        elif event.key == pygame.K_SPACE:
+            self._fire_bullet()
+
+    elif event.type == pygame.KEYUP:
+    def _check_keyup_events(self,event):
+        """响应松开"""
+        if event.key == pygame.K_RIGHT:
+    self.ship.moving_right = False
+            self.ship.moving_right = False
+        elif event.key == pygame.K_LEFT:
+        self.ship.moving_left = False
+            self.ship.moving_left = False
+
+    def _fire_bullet(self):
+        """创建一颗子弹，并将其加入编组bullets中"""
+        if len(self.bullets) < self.settings.bullets_allowed:
+            new_bullet = Bullet(self)
+            self.bullets.add(new_bullet)
 
     elif event.type == pygame.KEYDOWN:
         if event.key == pygame.K_RIGHT: