Feb-17-2021, 10:02 AM
I'm trying to get a pygame window with a grid of stars. Here's my code:
import sys import pygame # contains functionality to make a game from settings import Settings from star import Star class StarrySky: """Initialise a grid of stars on the screen.""" def __init__(self): """Initialise the game and create game resources.""" pygame.init() # initialise the background settings # which the game needs to work properly self.settings = Settings() self.screen = pygame.display.set_mode((0,0), pygame.FULLSCREEN) # tells pygame to figure out a window size to fill the screen self.settings.screen_width = self.screen.get_rect().width self.settings.screen_height = self.screen.get_rect().height # updates the screen settings after fullscreen has been created pygame.display.set_caption("Starry Sky") self.star = Star(self) def run_game(self): """Start the main loop for the game.""" while True: self.check_events() self.update_screen() def check_events(self): # Watch for keyboard and mouse events. for event in pygame.event.get(): if event.type == pygame.K_q: sys.exit() def create_grid(self): """Create the grid of stars.""" # create a star and find the number of stars in a row. # spacing between stars equal to 1 star width. star = Star(self) star_width, star_height = star.rect.size available_space_x = self.settings.screen_width - (2 * alien_width) number_stars_x = available_space_x // (2 * star_width) # Determine the number of rows of aliens that fit on the screen. available_space_y = (self.settings.screen_height - (3 * alien_height) ) number_rows = available_space_y // (2 * star_height) # Create the full sky of stars. for row_number in range(number_rows): # Create the first row of stars. for star_number in range(number_stars_x): # Create a star and place it in the row. self._create_star(star_number,row_number) def create_star(self, row_number, star_number): star = Star(self) star.x = star_width + 2 * star_width * star_number star.rect.x = star.x star.rect.y = star.rect.height + 2 * star.rect.height * row_number self.stars.add(star) def update_screen(self): """Update images on the screenand flip to the new screen.""" # redraw the screen during each pass through the loop self.screen.fill(self.settings.bg_color) self.stars.draw(self.screen) pygame.display.flip() if __name__ == "__main__": # make a game instance and run the game ai = StarrySky() ai.run_game()But I'm getting this error:
Error: File "c:\Users\djwil\Documents\python\python crash course\Projects\Alien invasion\star_sky.py", line 75, in <module>
ai.run_game()
File "c:\Users\djwil\Documents\python\python crash course\Projects\Alien invasion\star_sky.py", line 29, in run_game
self.update_screen()
File "c:\Users\djwil\Documents\python\python crash course\Projects\Alien invasion\star_sky.py", line 69, in update_screen
self.stars.draw(self.screen)
AttributeError: 'StarrySky' object has no attribute 'stars'
Can anyone help? Thanks