alien_invasion.py

import sys
import pygame
from pygame.sprite import Group
from settings import Settings
from game_stats import GameStats
from button import Button
from scoreboard import Scoreboard
from ship import Ship
from alien import Alien
import game_functions as gf

def run_game():
    #Initiaze the game the and create a screen object.
    pygame.init()
    ai_settings=Settings()
    screen=pygame.display.set_mode((ai_settings.screen_width,ai_settings.screen_height))
    pygame.display.set_caption("Alien Invasion")

    #Make the play button.
    play_button=Button(ai_settings,screen,"Play")


    #Create an instance to store game statistics.
    stats=GameStats(ai_settings)

    #Create an instance to store game statistics and create Scoreboard
    sb=Scoreboard(ai_settings,screen,stats)

    #Make a ship.
    ship=Ship(ai_settings,screen)

    #Make a group to store bullets in.
    bullets=Group() 

    #Making a group of aliens.
    aliens=Group()

    #Create the fleet of aliens.
    gf.create_fleet(ai_settings,screen,ship,aliens)


    #make an alien.
    #alien=Alien(ai_settings,screen)

    #Start the main loop for the game>
    while True:

        gf.check_events(ai_settings,screen,stats,sb,play_button,ship,aliens,bullets)
        if stats.game_active:
            ship.update()
            gf.update_bullets(ai_settings,screen,stats,sb,ship,aliens,bullets)
            gf.update_aliens(ai_settings,screen,stats,sb,ship,aliens,bullets)
        gf.update_screen(ai_settings,screen,stats,sb,ship,aliens,bullets,play_button)


run_game()