import sys 
import pygame
from settings import Settings
from ship import Ship
# from alien import AlienShip
from bullet import Bullet

class AlienInvasion():
    '''Класс всей игры'''

    def __init__(self):
        pygame.init()
        self.settings = Settings()
        self.screen = pygame.display.set_mode((self.settings.screen_width, self.settings.screen_height)) 
        
        # 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
        
        pygame.display.set_caption("Alien Invasion")
        self.ship = Ship(self)
        # self.alien = AlienShip(self)
        self.bullets = pygame.sprite.Group()

    def run_game(self):
        '''Запуск игры'''
        while(1):
            self._check_events()
            self.ship.update()
            self._update_bullets()
            self._update_screen()
            


    def _check_events(self):
        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_events(event)
                    
    def _check_keydown_events(self, event):
        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_q:
            sys.exit()
        elif event.key == pygame.K_SPACE:
            self._fire_bullet()
            
    def _check_keyup_events(self, event):
        if event.key == pygame.K_RIGHT:
            self.ship.moving_right = False
        elif event.key == pygame.K_LEFT:
            self.ship.moving_left = False

    def _fire_bullet(self):
        
        if(len(self.bullets) < self.settings.bullet_allowed):
            new_bullet = Bullet(self)
            self.bullets.add(new_bullet)

    def _update_bullets(self):
        self.bullets.update()   
        for bullet in self.bullets.copy():
            if bullet.rect.bottom <= 0:
                self.bullets.remove(bullet)

    def _update_screen(self):
        # Установить цвет фона из настроек
        self.screen.fill(self.settings.bg_color)
        # Обновить положение корабля
        self.ship.blitme()
        
        for bullet in self.bullets.sprites():
            bullet.draw_bullet()
            
        # self.alien.blitme()
        
        pygame.display.flip()

if __name__ == '__main__':
    AlInv = AlienInvasion()
    AlInv.run_game()