106 lines
3.3 KiB
Python
106 lines
3.3 KiB
Python
import sys
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from time import sleep
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import pygame
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from bullet import Bullet
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from alien import Alien
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def check_keydown_events(event, ai_settings, screen, ship, bullets):
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"""响应按键"""
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if event.key == pygame.K_RIGHT:
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ship.moving_right = True
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elif event.key == pygame.K_LEFT:
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ship.moving_left = True
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elif event.key == pygame.K_UP:
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ship.moving_up = True
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elif event.key == pygame.K_DOWN:
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ship.moving_down = True
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elif event.key == pygame.K_SPACE:
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fire_bullet(ai_settings, screen, ship, bullets)
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elif event.key == pygame.K_q:
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sys.exit()
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def fire_bullet(ai_settings, screen, ship, bullets):
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"""如果还没有到达限制，就发射一颗子弹"""
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# 创建一颗子弹，并将其加入到编组bullets中
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if len(bullets) < ai_settings.bullets_allowed:
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new_bullet = Bullet(ai_settings, screen, ship)
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bullets.add(new_bullet)
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def check_keyup_events(event, ship):
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"""响应松开"""
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if event.key == pygame.K_RIGHT:
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ship.moving_right = False
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elif event.key == pygame.K_LEFT:
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ship.moving_left = False
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elif event.key == pygame.K_UP:
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ship.moving_up = False
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elif event.key == pygame.K_DOWN:
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ship.moving_down = False
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def check_events(ai_settings, screen, stats, sb, play_button, ship, aliens,
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bullets):
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"""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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elif event.type == pygame.KEYDOWN:
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check_keydown_events(event, ai_settings, screen, ship, bullets)
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elif event.type == pygame.KEYUP:
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check_keyup_events(event, ship)
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elif event.type == pygame.MOUSEBUTTONDOWN:
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mouse_x, mouse_y = pygame.mouse.get_pos()
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check_play_button(ai_settings, screen, stats, sb, play_button, ship,
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aliens, bullets, mouse_x, mouse_y )
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def check_play_button(ai_settings, screen, stats, sb, play_button, ship, aliens,
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bullets, mouse_x, mouse_y):
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"""在玩家单击Play按钮时开始新游戏"""
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button_clicked = play_button.rect.collidepoint(mouse_x, mouse_y)
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if button_clicked and not stats.game_active:
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# 重置游戏设置
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ai_settings.initialize_dynamic_settings()
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# 隐藏光标
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pygame.mouse.set_visible(False)
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# 重置游戏统计信息
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stats.reset_stats()
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stats.game_active = True
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# 重置记分牌图像
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sb.prep_score()
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sb.prep_high_score()
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sb.prep_level()
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sb.prep_ships()
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# 清空外星人列表和子弹列表
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aliens.empty()
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bullets.empty()
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# 创建一群新的外星人，并让飞船居中
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create_fleet(ai_settings, screen, ship, aliens)
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sb.prep_ships()
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# 清空外星人列表和子弹列表
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aliens.empty()
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bullets.empty()
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# 清空外星人列表和子弹列表
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aliens.empty()
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bullets.empty()
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# 创建一群新的外星人，并让飞船居中
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create_fleet(ai_settings, screen, ship, aliens)
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ship.center_ship()
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def update_bullets(ai_settings, screen, stats, sb, ship, aliens, bullets):
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"""更新子弹的位置，并删除已消失的子弹"""
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# 更新子弹的位置
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bullets.update() |