def check_play_button(ai_settings: Settings, stats: GameStats,
screen: pygame.Surface, play_button: Button,
sb: ScoreBoard, ship: Ship, aliens: pygame.sprite.Group,
bullets: pygame.sprite.Group, mouse_x: int,
mouse_y: int) -> NoReturn:
"""在晚间单机play按钮时开始新游戏"""
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)
# 重置游戏统计信息
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()
# 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
create_fleet(ai_settings, screen, ship, aliens)
ship.center_ship()
def display_game(sprites: pygame.sprite.Group, live_blocks: Shape,
solid_blocks: list):
sprites.empty()
for i in live_blocks:
sprites.add(i)
for i in solid_blocks:
sprites.add(i)
sprites.update()
screen.blit(background, (0, 0))
sprites.draw(screen)
pygame.display.flip()
def update_keys(self, projectiles_group: pygame.sprite.Group,
enemy_projectiles_group: pygame.sprite.Group):
keys = pygame.key.get_pressed()
# math.ceil to avoid integer truncation
if keys[settings.keys["UP"]]:
#print(self.rect.y)
self.y -= (self.speed * settings.DELTA_T)
#print(self.rect.y)
self.dirty = 1
if keys[settings.keys["DOWN"]]:
self.y += (self.speed * settings.DELTA_T)
self.dirty = 1
if keys[settings.keys["LEFT"]]:
self.x -= (self.speed * settings.DELTA_T)
self.dirty = 1
if keys[settings.keys["RIGHT"]]:
self.x += (self.speed * settings.DELTA_T)
self.dirty = 1
if keys[settings.keys["BOMB"]]:
if self.bomb_timer <= 0:
enemy_projectiles_group.empty()
self.bomb_timer = 10000
self.x = max(self.x, settings.LEFT_BOUND)
self.x = min(self.x + self.rect.w, settings.RIGHT_BOUND) - self.rect.w
self.y = max(self.y, settings.LOWER_BOUND)
self.y = min(self.y + self.rect.h, settings.UPPER_BOUND) - self.rect.h
self.rect.topleft = round(self.x), round(self.y)
self.hitbox.topleft = utils.x_offset(self.rect,
self.hitbox.w), utils.y_offset(
self.rect, self.hitbox.h)
if keys[settings.keys["SHOOT"]]:
if self.timer > self.fire_delay:
settings.sounds["effects"]["shoot"].play()
self.fire(projectiles_group)
self.timer = 0
self.dirty = 1
def check_bullet_alien_collisions(ai_settings: Settings, stats: GameStats,
sb: ScoreBoard, aliens: pygame.sprite.Group,
bullets: pygame.sprite.Group,
screen: pygame.Surface,
ship: Ship) -> NoReturn:
"""响应子弹和外星人的碰撞"""
# 删除相应的子弹和外星人
collisions = pygame.sprite.groupcollide(bullets, aliens, True, True)
if collisions:
for alien in collisions.values():
stats.score += ai_settings.alien_points * len(alien)
sb.prep_score()
check_high_scord(stats, sb)
if len(aliens) == 0:
# 删除现有的子弹并创建一群外星人
bullets.empty()
ai_settings.increase_speed()
# 提高等级
stats.level += 1
sb.prep_level()
create_fleet(ai_settings, screen, ship, aliens)
def ship_hit(ai_settings: Settings, stats: GameStats, screen: pygame.Surface,
sb: ScoreBoard, ship: Ship, aliens: pygame.sprite.Group,
bullets: pygame.sprite.Group) -> NoReturn:
"""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()
# 创建一群新的外星人， 并将飞创放到屏幕低端中央
create_fleet(ai_settings, screen, ship, aliens)
ship.center_ship()
# 暂停
sleep(0.5)
else:
stats.game_active = False
pygame.mouse.set_visible(True)
