Question

我是Python的新手，正在从事太空入侵者游戏。我想让飞船发射子弹，但是当我按下发射键时，没有子弹被射击。多次按下后，程序关闭。

AlienGame.py

import sys
import pygame
from pygame.sprite import Group
from settings import Settings
from ship import Ship
import game_functions as gf


def run_game():
    pygame.init()
    ai_settings = Settings()
    screen = pygame.display.set_mode((ai_settings.screen_width, ai_settings.screen_height))
    pygame.display.set_caption("TemplAReeb's First Game")
    ship = Ship(ai_settings, screen)
    bullets = Group()
    bg_color = (230, 230, 230)

   while True:
        gf.check_events(ship, bullets)
        ship.update()
        bullets.update()
        gf.update_screen(ai_settings, screen, ship, bullets)
        screen.fill(bg_color)
        ship.blitme()
        pygame.display.flip()
        for event in pygame.event.get():
            if event.type==pygame.QUIT:
                sys.exit()
        screen.fill(bg_color)
        ship.blitme()
        pygame.display.flip()
run_game()

gamefunctions.py

import sys
import pygame
from bullet import Bullet
def check_keydown_events (event, bullets):
    if event.key == pygame.K_SPACE:
        new_bullet = Bullet(ai_settings, screen, ship)
        bullets.add(new_bullet)

def check_events(ship, bullets):
    keys = pygame.key.get_pressed()
    ship.moving_right = keys[pygame.K_RIGHT]
    ship.moving_left = keys[pygame.K_LEFT]
    for event in pygame.event.get():
        if event.type ==  pygame.KEYDOWN:
         check_keydown_events(event, bullets)


def update_screen(ai_settings, screen, ship, bullets):
    bg_color = (230, 230, 230)
    screen.fill(bg_color)
    ship.blitme()
    for bullet in bullets.sprites():
        bullet.draw_bullet()
    pygame.display.flip()

我收到ai_settings未定义的错误

Traceback (most recent call last):
  File "C:/Users/Areeb Irfan/.PyCharmCE2018.3/config/scratches/AlienGame.py", line 32, in <module>
run_game()
  File "C:/Users/Areeb Irfan/.PyCharmCE2018.3/config/scratches/AlienGame.py", line 19, in run_game
gf.check_events(ship, bullets)
  File "C:\Users\Areeb Irfan\.PyCharmCE2018.3\config\scratches\game_functions.py", line 16, in check_events
check_keydown_events(event, bullets)
  File "C:\Users\Areeb Irfan\.PyCharmCE2018.3\config\scratches\game_functions.py", line 7, in check_keydown_events
new_bullet = Bullet(ai_settings, screen, ship)
NameError: name 'ai_settings' is not defined

Answer 1

您的错误来自check_keydown_events中的这一行：

    new_bullet = Bullet(ai_settings, screen, ship)

您正试图将ai_settings传递给Bullet构造函数，但未在当前check_keydown_events函数的名称空间中定义。与update_screen不同，您不会传入ai_settings作为参数。

您可能需要修复该问题。您已经知道怎么做，因为您已经将ai_settings传递到update_screen（当前未使用它，您是否可能将它添加到错误的位置？）。您只需要将其扩展到check_events和check_keydown_events。

无法发射子弹，程序关闭

1 个答案: