def run_game():
# Initialize game, settings, and create a screen object.
pygame.init()
settings = Settings.getInstance()
screen = pygame.display.set_mode(
(settings.screen_width, settings.screen_height))
pygame.display.set_caption(settings.window_caption)
# Make the Play button.
play_button = Button(screen, "Play")
# Make Groupmanager
em = EntityManager.getInstance()
# Make ship
ship = Ship(screen)
em.add_single("ship", ship)
# Make a group to store bullets in.
em.add_group("bullets")
# Make a group to store aliens in
em.add_group("aliens")
# Create statistics and scoreboard
stats = GameStats()
sb = Scoreboard(settings, screen, stats)
# Load background.
bg = BackGround()
# Create explosions group
em.add_group("explosions")
# Start background music
SoundManager.getInstance().play_music()
# Make power up group
em.add_group("power_ups")
# Start the main loop for the game.
while True:
# Watch for keyboard and mouse events.
gf.check_events(screen, stats, sb, play_button)
if stats.game_active:
em.update_singles()
gf.update_bullets(screen, stats, sb)
gf.update_aliens(screen, stats, sb)
gf.update_explosions()
gf.update_power_ups()
gf.update_screen(screen, bg, stats, sb, play_button)
# Internal imports
from settings import Settings
from bullet import Bullet
from alien import Alien
from explosion import Explosion
from sound_manager import SoundManager
from entity_manager import EntityManager
from power_up import PowerUp
from settings import P_TYPE
# Singleton instance of Settings class
settings = Settings.getInstance()
# Singleton instance of Entity Manager class
ent_man = EntityManager.getInstance()
def check_keydown_events(event, screen):
"""Respond to keypresses."""
ship = ent_man.get_single("ship")
if event.key == pygame.K_RIGHT:
ship.moving_right = True
elif event.key == pygame.K_LEFT:
ship.moving_left = True
elif event.key == pygame.K_SPACE:
fire_bullet(screen)
SoundManager.getInstance().laser.play()
elif event.key == pygame.K_q:
sys.exit(0)
