class AlienInvasion:
"""Класс для управления ресурсами и поведением игры."""
def __init__(self):
pygame.init()
self.settings = Settings()
self.screen = pygame.display.set_mode((0, 0), pygame.FULLSCREEN)
self.settings.screen_width = self.screen.get_rect().width
self.settings.screen_height = self.screen.get_rect().height
pygame.display.set_caption("Alien Invasion")
self.stats = GameStats(self)
self.sb = Scoreboard(self)
self.ship = Ship(self)
self.bullets = pygame.sprite.Group()
self.aliens = pygame.sprite.Group()
self._create_fleet()
self.play_button = Button(self, 'Play')
def run_game(self):
while True:
self._check_events()
if self.stats.game_active:
self.ship.update()
self._update_bullets()
self._update_aliens()
self._update_screen()
def _check_events(self):
for event in pygame.event.get():
if event.type == pygame.QUIT:
self._exit()
elif event.type == pygame.KEYDOWN:
self._check_keydown_events(event)
elif event.type == pygame.KEYUP:
self._check_keyup_events(event)
elif event.type == pygame.MOUSEBUTTONDOWN:
mouse_pos = pygame.mouse.get_pos()
self._check_play_button(mouse_pos)
def _check_play_button(self, mouse_pos):
button_clicked = self.play_button.rect.collidepoint(mouse_pos)
if button_clicked and not self.stats.game_active:
self._start_game()
def _start_game(self):
self.settings.initialize_dynamic_settings()
self.stats.reset_stats()
self.stats.game_active = True
self.sb.prep_images()
self.aliens.empty()
self.bullets.empty()
self._create_fleet()
self.ship.center_ship()
pygame.mouse.set_visible(False)
def _check_keydown_events(self, event):
if event.key == pygame.K_RIGHT:
self.ship.moving_right = True
elif event.key == pygame.K_LEFT:
self.ship.moving_left = True
elif event.key in {pygame.K_q, pygame.K_ESCAPE}:
self._exit()
elif event.key == pygame.K_SPACE:
self._fire_bullet()
elif event.key == pygame.K_RETURN: # Enter key
self._start_game()
def _check_keyup_events(self, event):
if event.key == pygame.K_RIGHT:
self.ship.moving_right = False
elif event.key == pygame.K_LEFT:
self.ship.moving_left = False
def _fire_bullet(self):
if len(self.bullets) < self.settings.bullets_allowed:
new_bullet = Bullet(self)
self.bullets.add(new_bullet)
def _update_bullets(self):
self.bullets.update()
for bullet in self.bullets.copy():
if bullet.rect.bottom <= 0:
self.bullets.remove(bullet)
self._check_bullet_alien_collision()
def _check_bullet_alien_collision(self):
collisions = pygame.sprite.groupcollide(self.bullets, self.aliens,
True, True)
if collisions:
for aliens in collisions.values():
self.stats.score += self.settings.alien_points * len(aliens)
self.sb.prep_score()
self.sb.check_high_score()
if not self.aliens:
self._start_new_level()
def _start_new_level(self):
self.bullets.empty()
self._create_fleet()
self.settings.increase_speed()
self.stats.level += 1
self.sb.prep_level()
def _update_aliens(self):
self._check_fleet_edges()
self.aliens.update()
if pygame.sprite.spritecollideany(self.ship, self.aliens):
self._ship_hit()
self._check_aliens_bottom()
def _check_aliens_bottom(self):
screen_rect = self.screen.get_rect()
for alien in self.aliens.sprites():
if alien.rect.bottom >= screen_rect.bottom:
self._ship_hit()
break
def _ship_hit(self):
if self.stats.ships_left > 0:
self.stats.ships_left -= 1 # 4 attempts. if before the condition, then 3 attempts
self.sb.prep_ships()
self.aliens.empty()
self.bullets.empty()
self._create_fleet()
self.ship.center_ship()
sleep(0.5)
else:
self.stats.game_active = False
pygame.mouse.set_visible(True)
def _create_fleet(self):
alien = Alien(self)
alien_width, alien_height = alien.rect.size
available_space_x = self.settings.screen_width - (alien_width * 2)
number_aliens_x = available_space_x // (2 * alien_width)
ship_height = self.ship.rect.height
available_space_y = self.settings.screen_height - 3 * alien_height - ship_height
number_rows = available_space_y // (2 * alien_height)
for row_number in range(number_rows):
for alien_number in range(number_aliens_x):
self._create_alien(alien_number, row_number)
def _create_alien(self, alien_number, row_number):
alien = Alien(self)
alien_width, alien_height = alien.rect.size
alien.x = alien_width + 2 * alien_width * alien_number
alien.rect.x = alien.x
alien.rect.y = alien_height + 2 * alien_height * row_number
self.aliens.add(alien)
def _check_fleet_edges(self):
for alien in self.aliens.sprites():
if alien.check_edges():
self._change_fleet_direction()
break
def _change_fleet_direction(self):
for alien in self.aliens.sprites():
alien.rect.y += self.settings.fleet_drop_speed
self.settings.fleet_direction *= -1
def _update_screen(self):
self.screen.fill(self.settings.bg_color)
self.ship.blitme()
for bullet in self.bullets.sprites():
bullet.draw_bullet()
self.aliens.draw(self.screen)
self.sb.show_score()
if not self.stats.game_active:
self.play_button.draw_button()
pygame.display.flip()
def _exit(self):
with open('record.txt', 'w') as record:
record.write(str(self.stats.high_score))
sys.exit()
class AlienInvasion:
""" Overall class to manage game assets and behavior """
def __init__(self):
""" Initialize the game and creates game resources"""
pygame.init()
self.settings = Settings()
# for windowed mode
# self.screen = pygame.display.set_mode((self.settings.screen_width, self.settings.screen_height))
# for the fullscreen mode
self.screen = pygame.display.set_mode((0, 0), pygame.FULLSCREEN)
self.settings.screen_width = self.screen.get_rect().width
self.settings.screen_height = self.screen.get_rect().height
pygame.display.set_caption("Alien Invasion")
# Create an instance to store game statistics and create a scoreboard
self.stats = GameStats(self)
self.sb = ScoreBoard(self)
self.ship = Ship(self)
self.bullets = pygame.sprite.Group()
self.stars = pygame.sprite.Group()
self.aliens = pygame.sprite.Group()
self._populate_sky()
self._create_fleet()
self.play_button = Button(self, 'Play')
def run_game(self):
""" Start the main loop for the game """
while True:
self._check_events()
if self.stats.game_active:
self.ship.update()
self._update_bullets()
self._update_aliens()
self._update_screen()
def _check_events(self):
""" Respond to keypresses and mouse events """
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()
elif event.type == pygame.KEYDOWN:
self._check_keydown_events(event)
elif event.type == pygame.KEYUP:
self._check_keyup_events(event)
elif event.type == pygame.MOUSEBUTTONDOWN:
mouse_pos = pygame.mouse.get_pos()
self._check_play_button(mouse_pos)
def _check_keydown_events(self, event):
""" Respond to keypresses """
if event.key == pygame.K_RIGHT:
self.ship.moving_right = True
elif event.key == pygame.K_LEFT:
self.ship.moving_left = True
elif event.key == pygame.K_q:
sys.exit()
elif event.key == pygame.K_SPACE:
self._fire_bullet()
elif event.key == pygame.K_p:
self._start_game()
elif event.key == pygame.K_PAGEUP:
self.settings.manual_level += 1
self.stats.level = self.settings.manual_level
self.sb.prep_level()
elif event.key == pygame.K_PAGEDOWN:
self.settings.manual_level -= 1
if self.settings.manual_level < 1:
self.settings.manual_level = 1
self.stats.level = self.settings.manual_level
self.sb.prep_level()
elif event.key == pygame.K_r:
self._end_game()
def _check_keyup_events(self, event):
""" Respond to key releases """
if event.key == pygame.K_RIGHT:
self.ship.moving_right = False
elif event.key == pygame.K_LEFT:
self.ship.moving_left = False
def _check_play_button(self, mouse_pos):
""" Start a new game if the player clicks Play """
button_clicked = self.play_button.rect.collidepoint(mouse_pos)
if button_clicked and not self.stats.game_active:
self._start_game()
def _check_bullet_alien_collisions(self):
""" Respond for bullet-alien collisions """
# Remove any bullet and alien that have collided
collisions = pygame.sprite.groupcollide(self.bullets, self.aliens, True, True)
if collisions:
for aliens in collisions.values():
self.stats.score += self.settings.alien_points * len(aliens)
self.sb.prep_score()
self.sb.check_high_score()
if not self.aliens:
self._start_new_level()
def _start_new_level(self):
""" Level up the game if all alien ships were destroyed """
# Destroy existing bullets and create new fleet
self.bullets.empty()
self._create_fleet()
self.settings.increase_speed()
# Increase level
self.stats.level += 1
self.sb.prep_level()
def _check_fleet_edges(self):
""" Respond appropriately if any aliens have reached the edge """
for alien in self.aliens.sprites():
if alien.check_edges():
self._change_fleet_direction()
break
def _check_aliens_bottoms(self):
""" Check if any aliens have reached the bottom of the screen """
screen_rect = self.screen.get_rect()
for alien in self.aliens.sprites():
if alien.rect.bottom >= screen_rect.bottom:
# Treat it the same as if the ship got hit
self._ship_hit()
break
def _change_fleet_direction(self):
""" Drop the entire fleet and change the fleet's direction """
for alien in self.aliens.sprites():
alien.rect.y += self.settings.fleet_drop_speed
self.settings.fleet_direction *= -1
def _create_alien(self, alien_number, row_number):
""" Create an alien and place it in the row """
alien = Alien(self)
alien_width, alien_height = alien.rect.size
# Double indent from left side of the screen for every even row
# indent_width = alien_width if row_number % 2 == 0 else 2 * alien_width
alien.x = alien_width + 2 * alien_width * alien_number
alien.rect.x = alien.x
alien.rect.y = alien_height + 2 * alien_height * row_number
self.aliens.add(alien)
def _create_fleet(self):
""" Create the fleet of aliens """
# Create and alien and finds a number of aliens in the row
# Spacing between each alien is equal to one alien width
alien = Alien(self)
alien_width, alien_height = alien.rect.size
ship_height = self.ship.rect.height
# Defying the number of alien to fill all available space in a row
available_space_in_row = self.settings.screen_width - 2 * alien_width
number_aliens_in_row = available_space_in_row // (2 * alien_width)
# Determine a number of rows of alien to fit the screen
available_space_for_rows = self.settings.screen_height - ship_height - (5 * alien_height)
number_of_rows = available_space_for_rows // (2 * alien_height)
# Creates the fleet of aliens
for row_number in range(number_of_rows):
for alien_number in range(number_aliens_in_row):
self._create_alien(alien_number, row_number)
def _end_game(self):
""" Set end game conditions """
self.stats.game_active = False
self.settings.manual_level = 1
self.sb.store_high_score()
pygame.mouse.set_visible(True)
def _fire_bullet(self):
""" Create a new bullet and add it to the bullets group """
if len(self.bullets) < self.settings.bullets_allowed:
new_bullet = Bullet(self)
self.bullets.add(new_bullet)
def _populate_sky(self):
""" Place stars on the sky """
for _ in range(self.settings.star_count):
star = Star(self)
star_width, star_height = star.rect.size
star.rect.x = randint(star_width, self.settings.screen_width - star_width)
star.rect.y = randint(star_height, self.settings.screen_height - star_height)
self.stars.add(star)
def _start_game(self):
""" Start the game if key pressed or mouse clicked """
# Reset the game stats
self.stats.reset_stats()
self.settings.initialize_dynamic_settings()
self.settings.set_start_speed()
self.sb.prep_images()
self.stats.game_active = True
# Get rid of any remaining aliens and bullets
self.aliens.empty()
self.bullets.empty()
# Create a new fleet and center the ship
self._create_fleet()
self.ship.center_ship()
# Hide the mouse cursor
pygame.mouse.set_visible(False)
def _ship_hit(self):
""" Respond to the ship being hit by an alien """
if self.stats.ships_left > 0:
# Decrement ships left and update scoreboard
self.stats.ships_left -= 1
self.sb.prep_ships()
# Clear the screen from remaining aliens and bullets
self.bullets.empty()
self.aliens.empty()
# Create new fleet and center the ship.
self._create_fleet()
self.ship.center_ship()
# Pause
sleep(1)
else:
self._end_game()
def _update_aliens(self):
""" Check if the fleet is at an edge, then update the position of all aliens in the fleet """
self._check_fleet_edges()
self.aliens.update()
if pygame.sprite.spritecollideany(self.ship, self.aliens):
self._ship_hit()
# Look for aliens hitting the bottom of the screen
self._check_aliens_bottoms()
def _update_bullets(self):
""" Update position of bullets and get rid of old bullets """
# Update bullet position
self.bullets.update()
for bullet in self.bullets.copy():
if bullet.rect.bottom <= 0:
self.bullets.remove(bullet)
self._check_bullet_alien_collisions()
def _update_screen(self):
""" Update images on the screen and flip to the new screen """
self.screen.fill(self.settings.bg_color)
self.stars.draw(self.screen)
self.ship.blit_me()
for bullet in self.bullets.sprites():
bullet.draw_bullet()
self.aliens.draw(self.screen)
# Draw the score information
self.sb.show_score()
# Draw the play button if the game is inactive
if not self.stats.game_active:
self.play_button.draw_button()
pygame.display.flip()
