NameError: при написании игры на pygame

Question

вопрос таков.
Пишу по учебнику Э.Метиз Изучаем Python учебный проект при помощи Pygame.
При определении одной из переменных screen вылезает ошибка NameError.
Хотя переменная инициализирована. Не вижу своей ошибки. Буду рад помощи.
Основной файл game.py

import pygame
from settings import Settings
from ship import Ship

class AlienInvasion():
    """A class for managing resources and game behavior"""
    def __init__(self):
        """Inizialization game and create games resources"""
        pygame.init()
        self.settings = Settings()
        self.screen = pygame.display.set_mode(
            (self.settings.screen_width, self.settings.screen_height))
        pygame.display.set_caption("Alien Invasion")
        self.ship = Ship(screen)

    def run_game(self):
        """Launch main cycle game"""
        while True:
            # keyboard and mouse
            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    sys.exit()

            self.screen.fill(self.settings.bg_color)
            self.ship.blitme()

            # Display the last drawn screen
            pygame.display.flip()

if __name__ == '__main__':
    # Create exemple and launch game
    ai = AlienInvasion()
    ai.run_game()

файл с классом корабля Ship.py


class Ship():
    """Class for control ship"""
    def __init__(self, ai_game):
        """initialization ship and sets its initial position"""
        self.screen = ai_game.screen
        self.screen_rect = ai_game.screen.get_rect()
        #Load image ship
        self.image = pygame.image.load('images/ship.bmp')
        self.rect = self.image.get_rect()
        #Each new ship appears at the bottom of the screen
        self.rect.midbottom = self.screen_rect.midbottom

    def blitme(self):
        """Draw ship in current position"""
        self.screen.blit(self.image, self.rect)

Текст сообщения об ошибке:

Traceback (most recent call last):
  File "C:\Users\Gradysnik\Desktop\python_work\alien_invasion\game.py", line 33, in <module>
    ai = AlienInvasion()
  File "C:\Users\Gradysnik\Desktop\python_work\alien_invasion\game.py", line 15, in __init__
    self.ship = Ship(screen)
NameError: name 'screen' is not defined

upd. файл settings.py

class Settings():
    """A class for save all settings game Alien Invasion"""
    
    def __init__(self):
        """Inicialization settings game"""
        # Display settings
        self.screen_width = 1200
        self.screen_height = 800
        self.bg_color = (230, 230, 230)

Answer 1

я отметил строки, в которые внес изменения.

game.py

import  sys                                                                 # +++
import pygame
from settings import Settings
from ship import Ship

class AlienInvasion():
    """A class for managing resources and game behavior"""
    def __init__(self):
        """Inizialization game and create games resources"""
        pygame.init()
        self.settings = Settings()
        self.screen = pygame.display.set_mode(
            (self.settings.screen_width, self.settings.screen_height))
        pygame.display.set_caption("Alien Invasion")
        self.ship = Ship(self.screen)                                       # + self.

    def run_game(self):
        """Launch main cycle game"""
        while True:
            # keyboard and mouse
            for event in pygame.event.get():
                if event.type == pygame.QUIT:
                    sys.exit()

            self.screen.fill(self.settings.bg_color)
            self.ship.blitme()

            # Display the last drawn screen
            pygame.display.flip()

if __name__ == '__main__':
    # Create exemple and launch game
    ai = AlienInvasion()
    ai.run_game()

ship.py

import pygame                                                            # +++

class Ship():
    """Class for control ship"""
    def __init__(self, ai_game):
        """initialization ship and sets its initial position"""
        self.screen = ai_game                                             #.screen
        self.screen_rect = ai_game.get_rect()                             #ai_game.screen.get_rect()

        #Load image ship
#        self.image = pygame.image.load('images/ship.bmp')   
        self.image = pygame.image.load('Ok.png')
        
        self.rect = self.image.get_rect()
        #Each new ship appears at the bottom of the screen
        self.rect.midbottom = self.screen_rect.midbottom

    def blitme(self):
        """Draw ship in current position"""
        self.screen.blit(self.image, self.rect)

settings.py

class Settings():
    """A class for save all settings game Alien Invasion"""
    
    def __init__(self):
        """Inicialization settings game"""
        # Display settings
        self.screen_width = 1200
        self.screen_height = 600
        self.bg_color = (230, 230, 230)

БЛОГ НА HUSL

NameError: при написании игры на pygame

Ответы (1 шт):