From a116a1dce83116dabc5deb1e6b8e88e7207a530c Mon Sep 17 00:00:00 2001 From: 206530211 <1515969111@qq.com> Date: Thu, 24 Jun 2021 07:13:19 +0800 Subject: [PATCH] =?UTF-8?q?=E6=9B=B4=E6=96=B0=20'game=5Ffunctions.py'?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- game_functions.py | 173 +++++++++++++++++++++++++++++++++++++++++++--- 1 file changed, 164 insertions(+), 9 deletions(-) diff --git a/game_functions.py b/game_functions.py index d1aa311..dcde154 100644 --- a/game_functions.py +++ b/game_functions.py @@ -86,21 +86,176 @@ def check_play_button(ai_settings, screen, stats, sb, play_button, ship, aliens, # 创建一群新的外星人，并让飞船居中 create_fleet(ai_settings, screen, ship, aliens) + ship.center_ship() + +def update_bullets(ai_settings, screen, stats, sb, ship, aliens, bullets): + """更新子弹的位置，并删除已消失的子弹""" + # 更新子弹的位置 + bullets.update() + + # 删除已消失的子弹 + 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) + + +def check_bullet_alien_collisions(ai_settings, screen, stats, sb, ship, + aliens, bullets): + """响应子弹和外星人的碰撞""" + # 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: + # 如果整群外星人都被消灭，就提高一个等级 + bullets.empty() + ai_settings.increase_speed() + + # 提高等级 + stats.level += 1 + sb.prep_level() + + create_fleet(ai_settings, screen, ship, aliens) + +def update_screen(ai_settings, screen, stats, sb, ship, aliens, bullets, + play_button): + """更新屏幕上的图像，并切换到新屏幕""" + # 每次循环时都重绘屏幕 + # 背景图片 + bg_image = pygame.image.load('images/111.bmp') + screen.blit(bg_image, (0, 0)) + # 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() + aliens.draw(screen) + + # 显示得分 + sb.show_score() + + # 如果游戏处于非活动状态，就绘制Play按钮 + if not stats.game_active: + play_button.draw_button() + + # 让最近绘制的屏幕可见 + pygame.display.flip() + + +def get_number_aliens_x(ai_settings, alien_width): + """计算每行可容纳多少个外星人""" + available_space_x = ai_settings.screen_width - 2 * alien_width + number_aliens_x = int(available_space_x / (2 * alien_width)) + return number_aliens_x + + +def get_number_rows(ai_settings, ship_height, alien_height): + """计算屏幕可容纳多少行外星人""" + available_space_y = (ai_settings.screen_height - + (3 * alien_height) - ship_height) + number_rows = int(available_space_y / (3 * alien_height)) + return number_rows + + +def create_alien(ai_settings, screen, aliens, alien_number, row_number): + """创建一个外星人并将其放在当前行""" + alien = Alien(ai_settings, screen) + alien_width = alien.rect.width + alien.x = alien_width + 2 * alien_width * alien_number + alien.rect.y = alien.rect.height + 2 * alien.rect.height * row_number + alien.rect.x = alien.x + aliens.add(alien) + + +def create_fleet(ai_settings, screen, ship, aliens): + """创建外星人群""" + # 创建一个外星人，并计算每行可容纳多少个外星人 + alien = Alien(ai_settings, screen) + number_aliens_x = get_number_aliens_x(ai_settings, alien.rect.width) + number_rows = get_number_rows(ai_settings, ship.rect.height, + alien.rect.height) + + # 创建外星人群 + 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) + + +def check_fleet_edges(ai_settings, aliens): + """有外星人到达边缘时采取相应的措施""" + for alien in aliens.sprites(): + if alien.check_edges(): + change_fleet_direction(ai_settings, aliens) + break + + +def change_fleet_direction(ai_settings, aliens): + """将整群外星人下移，并改变它们的方向""" + for alien in aliens.sprites(): + alien.rect.y += ai_settings.fleet_drop_speed + ai_settings.fleet_direction *= -1 + + +def ship_hit(ai_settings, stats, screen, sb, ship, aliens, bullets): + """响应被外星人撞到的飞船""" + if stats.ships_left > 0: + # 将ships_left减1 + stats.ships_left -= 1 + + # 更新记分牌 sb.prep_ships() # 清空外星人列表和子弹列表 aliens.empty() bullets.empty() - # 清空外星人列表和子弹列表 - aliens.empty() - bullets.empty() - - # 创建一群新的外星人，并让飞船居中 + # 创建一群新的外星人，并将飞船放到屏幕底端中央 create_fleet(ai_settings, screen, ship, aliens) ship.center_ship() -def update_bullets(ai_settings, screen, stats, sb, ship, aliens, bullets): - """更新子弹的位置，并删除已消失的子弹""" - # 更新子弹的位置 - bullets.update() \ No newline at end of file + # 暂停 + sleep(3) + + else: + stats.game_active = False + pygame.mouse.set_visible(True) + + +def check_aliens_bottom(ai_settings, stats, screen, sb, ship, aliens, bullets): + """检查是否有外星人到达了屏幕底端""" + screen_rect = screen.get_rect() + for alien in aliens.sprites(): + if alien.rect.bottom >= screen_rect.bottom: + # 像飞船被撞到一样进行处理 + ship_hit(ai_settings, stats, screen, sb, ship, aliens, bullets) + break + + +def check_high_score(stats, sb): + """检查是否诞生了新的最高得分""" + if stats.score > stats.high_score: + stats.high_score = stats.score + sb.prep_high_score() + + +def update_aliens(ai_settings, stats, screen, sb, ship, aliens, bullets): + """ + 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 + """ + check_fleet_edges(ai_settings, aliens) + aliens.update() + + # 检测外星人和飞船之间的碰撞 + if pygame.sprite.spritecollideany(ship, aliens): + ship_hit(ai_settings, stats, screen, sb, ship, aliens, bullets) + + # 检查是否有外星人到达屏幕底端 + check_aliens_bottom(ai_settings, stats, screen, sb, ship, aliens, bullets) \ No newline at end of file