import pygame
from pygame.sprite import Group

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

def run_game():
	# 初始化游戏并创建一个屏幕对象
	pygame.init()
	ai_settings=Settings()
	screen=pygame.display.set_mode((ai_settings.screen_width,ai_settings.screen_height))
	pygame.display.set_caption("Alien Invasion")

	# 创建play按钮
	play_button = Button(ai_settings, screen, "Play")

	# 创建一个用于存储游戏统计信息的实例，并创建记分牌
	stats = GameStats(ai_settings)
	sb = Scoreboard(ai_settings, screen, stats)

	# 创建一艘飞船、一个子弹编组和一个外星人编组
	ship = Ship(ai_settings,screen)
	bullets = Group()
	aliens = Group()

	# 创建外星人群
	gf.create_fleet(ai_settings, screen, ship, aliens)

	#开始游戏的主循环
	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()