我已经在increase_speed中填写了Settings，似乎在check_bullet_alien_collisions中的game_functions中无效
我已经多次检查了关键功能，应该正确运行。
class Settings():
def __init__(self):
"""初始化游戏设置"""
self.screen_width = 1200
self.screen_height = 800
self.bg_color =(230,230,230)
self.bullet_width = 3
self.bullet_height = 15
self.bullet_color =(60,60,60)
self.bullets_allowed = 5
#飞船次数
self.ship_limit = 3
self.fleet_drop_speed = 10
#以以下倍率速度加快游戏
self.speedup_scale = 1.1
self.score_scale = 1.5
self.initialize_dynamic_settings()
def initialize_dynamic_settings(self):
"""初始化随游戏进行而变化的设置"""
#外星人初始速度
self.alien_speed_factor = 3
#子弹初始速度
self.bullet_speed_factor = 3
#飞船初始速度
self.ship_speed_factor = 1.5
# fleet_direction 为1向右平移，为-1向左平移
self.fleet_direction = 1
# 记分
self.alien_points = 50
def increase_speed(self):
"""提高速度设置"""
self.ship_speed_factor *= self.speedup_scale
self.bullet_speed_factor *= self.speedup_scale
self.alien_speed_factor *= self.speedup_scale
self.alien_points = int(self.alien_points*self.score_scale)
print(self.alien_points)
import sys
import pygame
from bullet import Bullet
from alien import Alien
from time import sleep
def check_keydown_events(event,ai_settings,screen,ship,bullets):
"""响应键盘"""
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()
def fire_bullet(ai_settings,screen,ship,bullets):
"""未达到上限，创建1个新的子弹"""
# 创建一个子弹，加入编组bullets中
if len(bullets) < ai_settings.bullets_allowed:
new_bullet = Bullet(ai_settings, screen, ship)
bullets.add(new_bullet)
def check_keyup_events(event,ship):
"""松开键盘"""
if event.key == pygame.K_RIGHT:
ship.moving_right = False
elif event.key == pygame.K_LEFT:
ship.moving_left = False
def check_events(ai_settings,screen,stats,play_button,ship,aliens,bullets):
"""响应键盘和鼠标"""
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,play_button,ship,aliens,bullets,mouse_x,mouse_y)
def check_play_button(ai_settings,screen,stats,play_button,ship,aliens,bullets,mouse_x,mouse_y):
"""玩家单击开始按钮开始新游戏"""
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()
pygame.mouse.set_visible(False)
stats.reset_stats()
stats.game_active = True
#清空外星人列表和子弹
aliens.empty()
bullets.empty()
#创建新的外星人和飞船居中
create_fleet(ai_settings,screen,ship,aliens)
ship.center_ship()
def update_screen(ai_settings,screen,stats,sb,ship,aliens,bullets,play_button):
"""更新屏幕新的图像，并切换新的屏幕"""
# 每次循环重绘屏幕
screen.fill(ai_settings.bg_color)
# 在飞船和外星人后面绘制所有子弹
for bullet in bullets.sprites():
bullet.draw_bullet()
sb.show_score()
ship.blitme()
aliens.draw(screen)
if not stats.game_active:
play_button.draw_button()
# 绘制屏幕最近可见
pygame.display.flip()
def update_bullets(ai_settings,screen,stats,sb,ship,aliens,bullets):
"""更新子弹位置，删除消失的子弹"""
bullets.update()
# 删除子弹
for bullet in bullets.copy():
if bullet.rect.bottom <= 0:
bullets.remove(bullet)
# 检查子弹是否击中外星人
# 如果是这样，删除对应子弹和外星人
check_bullet_alien_collisions(ai_settings,screen,stats,sb,ship,aliens,bullets)
if len(aliens) == 0 :
#删除现有的所有子弹刷新外星人群
bullets.empty()
create_fleet(ai_settings,screen,ship,aliens)
def create_fleet(ai_settings,screen,ship,aliens):
#创建一个外星人，并计算一行容纳多少个外星人
alien =Alien(ai_settings,screen)
number_alien_x = get_number_alien_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_alien_x):
create_alien(ai_settings,screen,aliens,alien_number,row_number)
def get_number_alien_x(ai_settings,alien_width):
"""计算一行可以容纳多少外星人"""
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):
"""计算屏幕可以容纳多少行外星人"""
available_space_y = (ai_settings.screen_height -
( 3 *alien_height) - ship_height)
number_rows = int(available_space_y / (2 * alien_height))
return number_rows
def create_alien(ai_settings,screen,aliens,alien_number,row_number):
"""创建一个外星人并放入其行"""
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)
def check_fleet_edges(ai_settings,aliens):
"""检测外星人达到边缘时的动作"""
for alien in aliens.sprites():
if alien.check_edges():
change_fleet_direction(ai_settings, aliens)
break
def change_fleet_direction(ai_settings,aliens):
"""降外星人群下移，并改变方向"""
for alien in aliens.sprites():
alien.rect.y += ai_settings.fleet_drop_speed
ai_settings.fleet_direction *= -1
def update_aliens(ai_settings,stats,screen,ship,aliens,bullets):
"""更新外星人群中所有外星人的位置"""
check_fleet_edges(ai_settings, aliens)
aliens.update()
#检测外星人和飞船碰撞
if pygame.sprite.spritecollideany(ship,aliens):
ship_hit(ai_settings,stats,screen,ship,aliens,bullets)
check_aliens_bottom(ai_settings,stats,screen,ship,aliens,bullets)
def ship_hit(ai_settings, stats, screen, ship, aliens, bullets):
"""响应被外星人撞的飞船"""
if stats.ship_left > 0:
stats.ship_left -= 1
else:
stats.game_active = False
pygame.mouse.set_visible(True)
#清空外星人和子弹
aliens.empty()
bullets.empty()
#创建新的外星人，并重置新飞船
create_fleet(ai_settings, screen, ship, aliens)
ship.center_ship()
sleep(0.5)
def check_aliens_bottom(ai_settings,stats,screen,ship,aliens,bullets):
"""检测是否有外星人到达屏幕底部"""
screen_rect =screen.get_rect()
for alien in aliens.sprites():
if alien.rect.bottom >= screen_rect.bottom:
#像飞船撞到一样处理
ship_hit(ai_settings,stats,screen,ship,aliens,bullets)
break
def check_bullet_alien_collisions(ai_settings,screen,stats,sb,ship,aliens,bullets):
collisions = pygame.sprite.groupcollide(bullets, aliens, True, True)
# 删除子弹以及发生碰撞的子弹和外星人
if collisions :
for aliens in collisions.values():
stats.score += ai_settings.alien_points
sb.prep_score()
if len(aliens) ==0 :
#删除现在所有的子弹，加快游戏节奏，刷新外星人
bullets.empty()
ai_settings.increase_speed()
create_fleet(ai_settings,screen,ship,aliens)