import pygame
from pygame.sprite import Group

from settings import Settings
from game_stats import GameStats
from scoreboard import Scoreboard
from ship import Ship
from button import Button
import game_functions as gf

def run_game():
	#init
	pygame.init()
	ai_settings = Settings()
	stats = GameStats(ai_settings)
	screen = pygame.display.set_mode((ai_settings.screen_width, ai_settings.screen_height))
	sb = Scoreboard(ai_settings, screen, stats)
	pygame.display.set_caption(ai_settings.screen_caption)
	
	ship = Ship(ai_settings, screen)
	bullets = Group()
	aliens = Group()
	play_button = Button(ai_settings, screen, 'play')
	gf.create_fleet(ai_settings, screen, ship, aliens)
	
	#main cycle
	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()
