class AlienInvasion:
"""Overall class to manage game assets and behavior."""
def __init__(self):
"""Initialize the game, and create game ressources."""
pygame.init()
self.settings = Settings()
self.clock = pygame.time.Clock()
# # Switch the comments on these blocks for fullscreen or window screen
# 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
self.screen = pygame.display.set_mode(
(self.settings.screen_width, self.settings.screen_height))
pygame.display.set_caption('COVID Invasion')
# Create an instance to store game statistics
# and create a scoreboard
self.stats = GameStats(self)
self.scoreboard = 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):
"""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()
self.clock.tick(300)
def _check_events(self):
"""Response to keypresses ans mouse events"""
for event in pygame.event.get():
if event.type == pygame.QUIT:
sys.exit()
elif event.type == pygame.MOUSEBUTTONDOWN:
mouse_pos = pygame.mouse.get_pos()
self._check_play_button(mouse_pos)
elif event.type == pygame.KEYDOWN:
self._check_keydown_events(event)
elif event.type == pygame.KEYUP:
self._check_keyup_events(event)
def _check_play_button(self, mouse_pos):
"""Start a new game when the player hit start"""
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):
"""Start the game"""
# Reset the dynamic settings
self.settings.init_dynamic()
# Hide the mouse cursor
pygame.mouse.set_visible(False)
# Reset the game stat
self.stats.reset_stat()
self.stats.game_active = True
self.scoreboard.prep_score()
self.scoreboard.prep_level()
self.scoreboard.prep_ships()
# Get rid of all remaining alien and bullets
self.aliens.empty()
self.bullets.empty()
# Create a new fleet and center the ship
self._create_fleet()
self.ship.center_ship()
def _check_keydown_events(self, event):
"""response to key presses."""
if event.key in (pygame.K_RIGHT, pygame.K_d):
self.ship.moving_right = True
elif event.key in (pygame.K_LEFT, pygame.K_a):
self.ship.moving_left = True
elif event.key == pygame.K_SPACE:
self._fire_bullet()
elif event.key == pygame.K_p:
self._start_game()
elif event.key == pygame.K_ESCAPE:
sys.exit()
def _check_keyup_events(self, event):
"""response to key releases."""
if event.key in (pygame.K_RIGHT, pygame.K_d):
self.ship.moving_right = False
elif event.key in (pygame.K_LEFT, pygame.K_a):
self.ship.moving_left = False
def _fire_bullet(self):
"""Create a new bullet and add it to the bullet 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 the bullets and get rid of old ones."""
# Update bullets position
self.bullets.update()
# Get rid of bullets that have disappeared
for bullet in self.bullets.copy():
if bullet.rect.bottom <= 0:
self.bullets.remove(bullet)
self._check_bullet_aliens_collision()
def _check_bullet_aliens_collision(self):
"""Respond to bullet-aliens collisions"""
# Remove any bullets and aliens that collided
collisions = pygame.sprite.groupcollide(
self.bullets,
self.aliens,
True, # dokill1: if True, the bullet is gone if coll
True # dokill2: if True, the alien is gone if coll
)
if collisions:
for aliens in collisions.values():
self.stats.score += self.settings.alien_points * len(aliens)
self.scoreboard.prep_score()
self.scoreboard.check_high_score()
# Create a new fleet if every aliens is down
if not self.aliens:
# Destroy existing bullets and create new fleet
self.bullets.empty()
self._create_fleet()
self.settings.increase_stats()
# Increase the level
self.stats.level += 1
self.scoreboard.prep_level()
def _create_fleet(self):
"""Create the fleet of aliens"""
# Create an alien and find the numbre of aliens in a row
alien = Alien(self)
alien_width, alien_height = alien.rect.size
available_space = self.settings.screen_width - (2 * alien_width)
number_alien_x = available_space // (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)
# Creating the full fleet of aliens
for row_number in range(number_rows):
for alien_number in range(number_alien_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_pos = alien_width + 2 * alien_width * alien_number
alien.rect.x = alien.x_pos
alien.rect.y = alien_height + 2 * alien_height * row_number
self.aliens.add(alien)
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_edge()
self.aliens.update()
# Look for alien-ship collision
if pygame.sprite.spritecollideany(self.ship, self.aliens):
self._ship_hit()
# Looks for aliens hitting the bottom of the screen
self._check_aliens_bottom()
def _check_fleet_edge(self):
for alien in self.aliens.sprites():
if alien.check_edge():
self._change_fleet_direction()
break
def _change_fleet_direction(self):
"""Drop the entire fleet and change direction"""
for alien in self.aliens.sprites():
alien.rect.y += self.settings.alien_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 ship_left
self.stats.ships_left -= 1
self.scoreboard.prep_ships()
# Get rid of any remaining bullets and aliens
self.bullets.empty()
self.aliens.empty()
# Create a new fleet and recenter the ship
self._create_fleet()
self.ship.center_ship()
# Little pause for the suspens
sleep(0.5)
else:
self.stats.game_active = False
pygame.mouse.set_visible(True)
def _check_aliens_bottom(self):
"""Check if the aliens have reach the bottom of the screen"""
screen_rect = self.screen.get_rect()
for alien in self.aliens.sprites():
if alien.rect.bottom >= screen_rect.bottom:
# Same treatment as the ship 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.background_color)
self.ship.blitme()
for bullet in self.bullets.sprites():
bullet.draw_bullet()
self.aliens.draw(self.screen)
# Draw the score informations
self.scoreboard.show_score()
if not self.stats.game_active:
self.play_button.draw_button()
pygame.display.flip()
class AlienAttack:
"""Overall class to manage game assests and characterstics of game"""
def __init__(self):
"""Initialize the game , and create game resources"""
pygame.init()
self.setting = Setting()
self.bullets = pygame.sprite.Group(
) # use for collecting similar type of object
self.screen = pygame.display.set_mode(
(0, 0), pygame.FULLSCREEN
) # 0 width and 0 length expresses the full screen
self.setting.screen_width = self.screen.get_rect().width
self.setting.screen_height = self.screen.get_rect().height
# pygame.display.set_caption("Alien Invasion")
self.ship = Ship(self)
self.enemy = pygame.sprite.Group()
self.stats = GameStats(self)
self.score_board = ScoreBoard(self) #create a score board
self._create_fleet()
# as we need only one button then we need to call it once
self.play_button = Button(self, "Play")
def _create_fleet(self):
"""Create a fleet of alien"""
new_enemy = Enemy(self)
enemy_width, enemy_height = new_enemy.rect.size
available_space_x = self.setting.screen_width - (2 * enemy_width)
number_enemy_x = available_space_x // (2 * enemy_width)
# determine the number of rows that will fit
ship_height = self.ship.ship_rect.height
available_space_y = self.setting.screen_height - (
3 * enemy_height) - ship_height
number_rows = available_space_y // (2 * enemy_height)
# create a full fleet of aliens
for row_number in range(number_rows + 1):
for enemy_number in range(number_enemy_x + 1):
self._create_alien(enemy_number, row_number)
def _create_alien(self, enemy_number, row_number):
new_enemy = Enemy(self)
enemy_width, enemy_height = new_enemy.rect.size
new_enemy.x = enemy_width + 2 * enemy_width * enemy_number
new_enemy.rect.x = new_enemy.x
new_enemy.rect.y = new_enemy.rect.height + 2 * new_enemy.rect.height * row_number
self.enemy.add(new_enemy)
def run_game(self):
"""Start the main loop for game"""
while True:
self._check_event()
if self.stats.game_active:
self.ship.update()
self._update_bullets()
self._update_enemy()
self._update_screen()
def _ship_hit(self):
"""Respond to the ship being hit by alien"""
# decrement ship left
if self.stats.ships_left > 0:
self.stats.ships_left -= 1
self.score_board.prep_ships()
# get rid of any remaining aliens and bulllets
self.enemy.empty()
self.bullets.empty()
# Create a new fleet
self._create_fleet()
self.ship.center_ship()
# pause
sleep(0.5)
else:
self.stats.game_active = False
self.stats.reset_stat()
self.ship.center_ship()
pygame.mouse.set_visible(True)
self.stats.level = 0
def _update_enemy(self):
"""Update the position of enemy ships"""
self._check_fleet_edges()
self.enemy.update()
# Look for alien-ship collision
if pygame.sprite.spritecollideany(
self.ship,
self.enemy): # use for collision bw images or rectangles
self._ship_hit()
self._check_enemy_bottom()
def _check_fleet_edges(self):
"""Respond appropriatly if any aliens have reached an edge"""
for enemy in self.enemy.sprites():
if enemy.check_edge():
self._change_fleet_direction()
break
def _change_fleet_direction(self):
"""Drop the entire fleet and change the fleet's direction"""
for enemy in self.enemy.sprites():
enemy.rect.y += self.setting.fleet_drop_speed
self.setting.fleet_direction *= -1
def _update_bullets(self):
self.bullets.update()
# get rid of the bullets that have disapperead
for bullet in self.bullets.copy():
if bullet.rect.y <= 0:
self.bullets.remove(bullet)
self._check_bullet_enemy_collision()
def _check_bullet_enemy_collision(self):
"""Respond to bullet - alien collision"""
# check for any bullet that have hit enemy
# if so , get rid of the bullet and the enemy
collisions = pygame.sprite.groupcollide(self.bullets, self.enemy, True,
True)
if not self.enemy:
self.bullets.empty()
self._create_fleet()
self.setting.increase_speed()
#increase level
self.stats.level += 1
self.score_board.prep_level()
if collisions:
for enemy in collisions.values():
self.stats.score += self.setting.enemy_point * len(enemy)
self.score_board.prep_score()
self.score_board.check_high_score()
def _check_event(self):
"""Response to keypress and mouse event"""
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_event(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 the player clicked clicks play"""
button_clicked = self.play_button.rect.collidepoint(mouse_pos)
if button_clicked and not self.stats.game_active:
self.stats.reset_stat()
self.score_board.prep_score()
self.setting.initialize_dynamic_setting()
self.stats.game_active = True
self.score_board.prep_level()
pygame.mouse.set_visible(False)
self.score_board.prep_ships()
# Get rid of any remaining aliens and bullets
self.enemy.empty()
self.bullets.empty()
# create a new fleet and center the ship
self._create_fleet()
self.ship.center_ship()
def _check_keydown_events(self, event):
"""Response to keyup events"""
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_UP:
self.ship.moving_up = True
elif event.key == pygame.K_DOWN:
self.ship.moving_down = True
elif event.key == pygame.K_q:
sys.exit()
elif event.key == pygame.K_SPACE:
self._fire_bullet()
def _fire_bullet(self):
if len(self.bullets) < self.setting.bullet_alloewed:
new_bullet = Bullet(self)
self.bullets.add(new_bullet)
def _check_keyup_event(self, event):
"""Response to keyup events"""
if event.key == pygame.K_RIGHT:
self.ship.moving_right = False
elif event.key == pygame.K_LEFT:
self.ship.moving_left = False
elif event.key == pygame.K_UP:
self.ship.moving_up = False
elif event.key == pygame.K_DOWN:
self.ship.moving_down = False
def _update_screen(self):
"""update images on the screen, and flip to the new screen"""
self.screen.fill(self.setting.bg_color)
self.ship.blitme()
for bullet in self.bullets.sprites():
bullet.draw_bullet()
self.enemy.draw(self.screen)
self.score_board.show_score()
# draw the play button if the game is inactive
if not self.stats.game_active:
self.play_button.draw_button()
"""Make the latest change visible on screen"""
pygame.display.flip()
def _check_enemy_bottom(self):
"""check if any aliens have reached the bottom of screen"""
screen_rect = self.screen.get_rect()
for enemy in self.enemy.sprites():
if enemy.rect.bottom >= screen_rect.bottom:
self._ship_hit()
break