class MeteorShower:
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("Meteor shower")
self.ship = Ship(self)
self.bullets = pygame.sprite.Group()
self.meteors = pygame.sprite.Group()
self._create_rain()
self.super_bullets = pygame.sprite.Group()
self.stats = Game_stats(self)
self.sb = Scoreboard(self)
self.play_button = Button(self , "Play")
def _check_event(self):
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_play_button(self , mouse_pos):
if self.play_button.rect.collidepoint(mouse_pos) and not self.stats.game_active:
self.stats.reset_stats()
self.stats.game_active = True
self.sb.prep_score()
self.sb.prep_hs()
self.sb.prep_ships()
self.sb.show_score()
self.meteors.empty()
self.bullets.empty()
self._create_rain()
self.ship.center_ship()
self.settings.initialize_settings()
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 == pygame.K_q:
sys.exit()
elif event.key == pygame.K_SPACE:
self._fire_bullet()
elif event.key == pygame.K_s:
self._fire_super_bullet()
elif event.key == pygame.K_p:
if not self.stats.game_active:
self.stats.reset_stats()
self.stats.game_active = True
self.sb.prep_score()
self.sb.prep_hs()
self.sb.prep_ships()
self.sb.show_score()
self.meteors.empty()
self.bullets.empty()
self._create_rain()
self.ship.center_ship()
self.settings.initialize_settings()
pygame.mouse.set_visible(False)
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 _check_meteor_edges(self):
for meteor in self.meteors.sprites():
if meteor.check_edges():
self._change_meteor_direction()
break
def _change_meteor_direction(self):
for meteor in self.meteors.sprites():
meteor.rect.y += meteor.settings.meteor_drop_speed
self.settings.meteor_direction *= -1
def _fire_bullet(self):
if len(self.bullets) < self.settings.bullet_allowed:
new_bullet = Bullet(self)
self.bullets.add(new_bullet)
def _fire_super_bullet(self):
if len(self.super_bullets) <= 1 :
new_super_bullet = Super_bullet(self)
self.super_bullets.add(new_super_bullet)
def _create_rain(self):
meteor = Meteor(self)
meteor_width , meteor_height = meteor.rect.size
available_space_x = self.settings.screen_width - (2 * meteor_width)
number_meteor_x = available_space_x // (2 * meteor_width)
ship_height = self.ship.rect.height
available_space_y = (self.settings.screen_height - (3 * meteor_height) - ship_height)
number_rows = available_space_y // (2 * meteor_height)
for row_number in range(number_rows):
for meteor_number in range(number_meteor_x):
self._create_meteor(meteor_number , row_number)
def _create_meteor(self , meteor_number , row_number):
meteor = Meteor(self)
meteor_width , meteor_height = meteor.rect.size
meteor.x = 20 + meteor_width + 2 * meteor_width * meteor_number
meteor.rect.x = meteor.x
meteor.rect.y = meteor.rect.height + 2 * meteor.rect.height * row_number
self.meteors.add(meteor)
def _screen_update(self):
self.screen.fill(self.settings.bg_color)
self.ship.blitme()
for bullet in self.bullets.sprites():
bullet.draw_bullet()
for bullet in self.super_bullets.sprites():
bullet.draw_super_bullet()
self.meteors.draw(self.screen)
self._check_meteor_edges()
self.sb.show_score()
if not self.stats.game_active:
self.play_button.draw_button()
pygame.display.flip()
def _bullet_update(self):
self.bullets.update()
for bullet in self.bullets.copy():
if bullet.rect.bottom <= 0:
self.bullets.remove(bullet)
self._check_bullet_meteor_collision()
def _super_bullet_update(self):
self.super_bullets.update()
for bullet in self.super_bullets.copy():
if bullet.rect.bottom <= 0:
self.super_bullets.remove(bullet)
collisions = pygame.sprite.groupcollide(self.super_bullets , self.meteors , False , True)
if collisions:
for i in collisions.values():
self.stats.score += self.settings.meteor_point * len(i)
self.sb.prep_score()
self.sb.check_high_score()
def _check_bullet_meteor_collision(self):
collisions = pygame.sprite.groupcollide(self.bullets , self.meteors , True , True)
if collisions:
for i in collisions.values():
self.stats.score += self.settings.meteor_point * len(i)
self.sb.prep_score()
self.sb.check_high_score()
if not self.meteors:
self.super_bullets.empty()
self.bullets.empty()
self._create_rain()
self.settings.increase()
self.stats.level += 1
self.sb.prep_level()
def _meteor_update(self):
self.meteors.update()
if pygame.sprite.spritecollideany(self.ship , self.meteors):
self.ship_hit()
self._check_meteor_bottom()
def ship_hit(self):
if self.stats.ship_left >0:
self.stats.ship_left -= 1
self.sb.prep_ships()
self.bullets.empty()
self.meteors.empty()
self.super_bullets.empty()
self._create_rain()
self.ship.center_ship()
sleep(0.5)
else:
self.stats.game_active = False
pygame.mouse.set_visible(True)
def _check_meteor_bottom(self):
screen_rect = self.screen.get_rect()
for meteor in self.meteors.sprites():
if meteor.rect.bottom >= screen_rect.bottom:
self.ship_hit()
break
def run_game(self):
while True:
self._check_event()
if self.stats.game_active:
self.ship.update()
self._bullet_update()
self._super_bullet_update()
self._meteor_update()
self._screen_update()
class AlienInvasion:
"""Overall class to manage game assets and behaviour."""
def __init__(self):
"""Intialize the game and create game resources."""
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")
# Create an instance to store game statistics,
# and create a scoreboard.
self.stats = Game_stats(self)
self.sb = Scoreboard(self)
self.ship = Ship(self)
self.bullets = pygame.sprite.Group()
self.aliens = pygame.sprite.Group()
self._create_fleet()
# Make a play button.
self.play_button = Button(self, "Play")
# Start Alien Invasion in active state.
self.stats.game_active = False
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_play_button(self, mouse_pos):
""" Start a new game when player clicks Play. """
if self.play_button.rect.collidepoint(
mouse_pos) and not self.stats.game_active:
# Reset the game settings.
self.settings.initialize_dynamic_settings()
# Reset the game statistics.
self.stats.reset_stats()
self.stats.game_active = True
self.sb.prep_score()
self.sb.prep_level()
self.sb.prep_ships()
# 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 _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()
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 _fire_bullet(self):
"""Create new group 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 _update_bullets(self):
"""Update position of bullets and get rid of old bullets."""
# Update bullet positions.
self.bullets.update()
# Get rid of bullets that have dissappeared.
for bullet in self.bullets.copy():
if bullet.rect.bottom <= 0:
self.bullets.remove(bullet)
self._check_bullet_alien_collisions()
def _check_bullet_alien_collisions(self):
""" Respond to bullets and aliens collision. """
# Remove any bullets and aliens that have collided.
collisions = pygame.sprite.groupcollide(self.bullets, self.aliens,
True, True)
if not self.aliens:
# Destroy existing fleet and create a new fleet.
self.bullets.empty()
self._create_fleet()
self.settings.increase_speed()
# Increase level.
self.stats.game_level += 1
self.sb.prep_level()
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()
def _update_aliens(self):
"""
Check if the fleet is at an edge,
then update the position of all the aliens in the fleet.
"""
self._check_fleet_edges()
self.aliens.update()
# Look for alien ship collisions.
if pygame.sprite.spritecollideany(self.ship, self.aliens):
self._ship_hit()
# Look for the aliens hitting the bottom of the screen
self._check_aliens_buttom()
def _create_fleet(self):
"""Create the fleet of aliens."""
# Create an alien and find the number of aliens in a row.
# Spacing between each alien is equal to one alien width.
alien = Alien(self)
alien_width, alien_height = alien.rect.size
available_space_x = self.settings.screen_width - (2 * alien_width)
number_aliens_x = available_space_x // (2 * alien_width)
# Determine the number of rows of aliens that fit on the screen.
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)
# Create the full fleet of aliens.
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):
""" Create an alien and place it in the row """
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.rect.height + 2 * alien.rect.height * row_number
self.aliens.add(alien)
def _check_fleet_edges(self):
""" Respond appropriately if any aliens have reached an edge. """
for alien in self.aliens.sprites():
if alien.check_edges():
self._change_fleet_direction()
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 _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()
# Get rid of any remaining aliens and bullet.
self.aliens.empty()
self.bullets.empty()
# Create a new fleet and center the ship.
self._create_fleet()
self.ship.center_ship()
# Pause
sleep(0.5)
else:
self.stats.game_active = False
pygame.mouse.set_visible(True)
def _check_aliens_buttom(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 this the same as if the ship got hit.
self._ship_hit()
break
def _update_screen(self):
"""Update images on the screen, and flip to the new screen."""
self.screen.fill(self.settings.bg_color)
self.ship.blitme()
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()