上传文件至 '重构'

重构/main.py

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+# This is a sample Python script.
+
+# Press Shift+F10 to execute it or replace it with your code.
+# Press Double Shift to search everywhere for classes, files, tool windows, actions, and settings.
+
+
+def print_hi(name):
+    # Use a breakpoint in the code line below to debug your script.
+    print(f'Hi, {name}')  # Press Ctrl+F8 to toggle the breakpoint.
+
+
+# Press the green button in the gutter to run the script.
+if __name__ == '__main__':
+    print_hi('PyCharm')
+
+# See PyCharm help at https://www.jetbrains.com/help/pycharm/
+import sys
+import pygame
+from bullet import Bullet
+from alien import Alien
+from time import sleep
+
+
+# 响应按键
+def check_keydown_events(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
+    elif event.key == pygame.K_SPACE:
+        fire_bullet(ai_settings, screen, ship, bullets)
+    elif event.key == pygame.K_q:
+        sys.exit()
+
+
+# 如果还没有到达限制，就发射一颗子弹
+def fire_bullet(ai_settings, screen, ship, bullets):
+    if len(bullets) < ai_settings.bullets_allowed:
+        new_bullet = Bullet(ai_settings, screen, ship)
+        bullets.add(new_bullet)
+
+
+# 响应松开
+def check_keyup_events(event, ship):
+    if event.key == pygame.K_RIGHT:
+        ship.moving_right = False
+    elif event.key == pygame.K_LEFT:
+        ship.moving_left = False
+
+
+# 响应按键和鼠标事件
+def check_events(ai_settings, screen, stats, sb, play_button, ship, aliens, bullets):
+    for event in pygame.event.get():
+        if event.type == pygame.QUIT:
+            sys.exit()
+        elif event.type == pygame.KEYDOWN:
+            check_keydown_events(event, ai_settings, screen, ship, bullets)
+        elif event.type == pygame.KEYUP:
+            check_keyup_events(event, ship)
+        elif event.type == pygame.MOUSEBUTTONDOWN:
+            mouse_x, mouse_y = pygame.mouse.get_pos()
+            check_play_button(ai_settings, screen, stats, sb, play_button, ship, aliens, bullets, mouse_x, mouse_y)
+
+
+# 在玩家单击play按钮时开始新游戏
+def check_play_button(ai_settings, screen, stats, sb, play_button, ship, aliens, bullets, mouse_x, mouse_y):
+    button_clicked = play_button.rect.collidepoint(mouse_x, mouse_y)
+    if button_clicked and not stats.game_active:
+        # 重置游戏设置
+        ai_settings.initialize_dynamic_settings()
+        # 隐藏光标
+        pygame.mouse.set_visible(False)
+        stats.reset_stats()
+        stats.game_active = True
+        # 重置记分牌图像
+        sb.prep_score()
+        sb.prep_high_score()
+        sb.prep_level()
+        sb.prep_ships()
+
+        aliens.empty()
+        bullets.empty()
+
+        create_fleet(ai_settings, screen, ship, aliens)
+        ship.center_ship()
+
+
+#  更新屏幕上的图像，并切换到新屏幕
+def update_screen(ai_settings, screen, stats, sb, ship, aliens, bullets, play_button):
+    screen.fill(ai_settings.bg_color)
+    ship.blitme()
+    # 在飞船和外星人之间绘制所有子弹
+    for bullet in bullets.sprites():
+        bullet.draw_bullet()
+    ship.blitme()
+    aliens.draw(screen)
+
+    sb.show_score()
+    """注意这里使用的pygame.display.flip()要放在这里的位置！！！"""
+    if not stats.game_active:
+        play_button.draw_button()
+
+    pygame.display.flip()
+
+
+# 更新子弹的位置，并消除已经小时的子弹
+def update_bullets(ai_settings, screen, stats, sb, ship, aliens, bullets):
+    bullets.update()
+    for bullet in bullets.copy():
+        if bullet.rect.bottom <= 0:
+            bullets.remove(bullet)
+    check_bullet_alien_collisions(ai_settings, screen, stats, sb, ship, aliens, bullets)
+
+
+# 响应子弹和外星人的碰撞
+def check_bullet_alien_collisions(ai_settings, screen, stats, sb, ship, aliens, bullets):
+    # 删除发生碰撞的子弹和外星人
+    collisions = pygame.sprite.groupcollide(bullets, aliens, True, True)
+
+    if collisions:
+        for aliens in collisions.values():
+            stats.score += ai_settings.alien_points * len(aliens)
+            sb.prep_score()
+        check_high_score(stats, sb)
+
+    if len(aliens) == 0:
+        bullets.empty()
+        ai_settings.increase_speed()
+        # 提高等级
+        stats.level += 1
+        sb.prep_level()
+
+        create_fleet(ai_settings, screen, ship, aliens)
+
+
+# 计算每行可以容纳多少外星人
+def get_number_aliens_x(ai_settings, alien_width):
+    available_space_x = ai_settings.screen_width - 2 * alien_width
+    number_aliens_x = int(available_space_x / (2 * alien_width))
+    return number_aliens_x
+
+
+# 计算屏幕可以容纳多少行外星人
+def get_number_row(ai_settings, ship_height, alien_height):
+    avaliable_space_y = (ai_settings.screen_height - (3*alien_height) - ship_height)
+    number_rows = int(avaliable_space_y / (2*alien_height))
+    return number_rows
+
+
+# 创建一个外星人并将其放在当前行
+def create_alien(ai_settings, screen, aliens, alien_number, row_number):
+    alien = Alien(ai_settings, screen)
+    alien_width = alien.rect.width
+    alien.x = alien_width + 2 * alien_width * alien_number
+    alien.rect.x = alien.x
+    alien.rect.y = alien.rect.height + 2 * alien.rect.height * row_number
+    aliens.add(alien)
+
+
+# 创建外星人群
+def create_fleet(ai_settings, screen, ship, aliens):
+    alien = Alien(ai_settings, screen)
+    number_aliens_x = get_number_aliens_x(ai_settings, alien.rect.width)
+    number_rows = get_number_row(ai_settings, ship.rect.height, alien.rect.height)
+    # 创建第一行外星人
+    for row_number in range(number_rows):
+        for alien_number in range(number_aliens_x):
+            create_alien(ai_settings, screen, aliens, alien_number, row_number)
+
+
+# 有外星人到达边缘时采取响应的措施
+def check_fleet_edges(ai_settings, aliens):
+    for alien in aliens.sprites():
+        if alien.check_edges():
+            change_fleet_direction(ai_settings, aliens)
+            break
+
+
+# 将一群外星人下移动，并更新整群外星人的位置
+def change_fleet_direction(ai_settings, aliens):
+    for alien in aliens.sprites():
+        alien.rect.y += ai_settings.fleet_drop_speed
+    ai_settings.fleet_direction *= -1
+
+
+# 响应被外星人撞到的飞船
+def ship_hit(ai_settings, screen, stats, sb, ship, aliens, bullets):
+    if stats.ships_left > 0:
+        stats.ships_left -= 1
+        sb.prep_ships()
+
+        aliens.empty()
+        bullets.empty()
+
+        create_fleet(ai_settings, screen, ship, aliens)
+        ship.center_ship()
+        sleep(0.5)
+
+    else:
+        print("Game Over")
+        stats.game_active = False
+        pygame.mouse.set_visible(True)
+
+
+# 检查是否有外星人到达屏幕底端
+def check_aliens_bottom(ai_settings, screen, stats, sb, ship, aliens, bullets):
+    screen_rect = screen.get_rect()
+    for alien in aliens.sprites():
+        if alien.rect.bottom >= screen_rect.bottom:
+            ship_hit(ai_settings, screen, stats, sb, ship, aliens, bullets)
+            break
+
+
+# 更新外星人群所有外星人的位置
+def update_aliens(ai_settings, screen, stats, sb, ship, aliens, bullets):
+    check_fleet_edges(ai_settings, aliens)
+    aliens.update()
+    if pygame.sprite.spritecollideany(ship, aliens):
+        ship_hit(ai_settings, screen, stats, sb, ship, aliens, bullets)
+    check_aliens_bottom(ai_settings, screen, stats, sb, ship, aliens, bullets)
+
+
+def check_high_score(stats, sb):
+    if stats.score > stats.high_score:
+        stats.high_score = stats.score
+        sb.prep_high_score()