controls.py

import pygame, sys
from bullet import Bullet
from alien import Alien
import time




def events(screen, gun, bullets):
    for event in pygame.event.get():
            if event.type == pygame.QUIT:
                sys.exit()
            elif event.type == pygame.KEYDOWN:
                #right
                if event.key == pygame.K_d:
                    gun.mright = True
                #left
                elif event.key == pygame.K_a:
                    gun.mleft = True
                elif event.key == pygame.K_SPACE:
                    new_bulet = Bullet(screen, gun)
                    bullets.add(new_bulet)
            elif event.type == pygame.KEYUP:
                #right
                if event.key == pygame.K_d:
                    gun.mright = False
                #left
                elif event.key == pygame.K_a:
                    gun.mleft = False
                    
                    
def update(bg_color, screen, stats, sc, gun, aliens, bullets):
    
    screen.fill(bg_color)
    sc.show_scope()
    for bullet in bullets.sprites():
        bullet.drow_bullet()
    gun.output()
    aliens.draw(screen)
    pygame.display.flip()
    
def update_bullets(screen, stats, sc, aliens, bullets):
    
    bullets.update()
    for bullet in bullets.copy():
        if bullet.rect.bottom <= 0:
            bullets.remove(bullet)
    #print(len(bullets))
    
    collisions = pygame.sprite.groupcollide(bullets, aliens, True, True)
    
    if collisions:
        
        for aliens in collisions.values():
            
        
            stats.scope += 10 * len(aliens)
        sc.image_score()
        check_high_score(stats, sc)
        #sc.image_guns()
    if len(aliens) == 0:
        bullets.empty()
        create_army(screen, aliens)
     
     
     
     
def gun_kill(stats, screen, sc, gun, aliens, bullets):
    
    
    if stats.guns_left > 0:
        stats.guns_left -= 1
        #sc.image_guns()
        aliens.empty()
        bullets.empty()
        create_army(screen, aliens)
        gun.create_gun()
        time.sleep(2)
    else:
        stats.run_game = False
        sys.exit()
     
     
def update_aliens(stats, screen, sc, gun, aliens, bullets):
    
    aliens.update()
    if pygame.sprite.spritecollide(gun, aliens, True):
        gun_kill(stats, screen, sc, gun, aliens, bullets)
    aliens_check(stats, screen, sc,  gun, aliens, bullets)

def aliens_check(stats, screen, sc, gun, aliens, bullets):
    
    screen_rect = screen.get_rect()
    
    for alien in aliens.sprites():
        if alien.rect.bottom >= screen_rect.bottom:
            gun_kill(stats, screen, sc, gun, aliens, bullets)
            break
        
    
                
                
def create_army(screen, aliens):
    alien = Alien(screen)
    alien_width = alien.rect.width
    number_alien_x = int((1000-2 * alien_width) / alien_width)
    alien_height = alien.rect.height
    number_alien_y = int((1000 - 100 - 2*alien_height)/alien_height)
    
    for row_number in range(number_alien_y - 3):
        
        for alien_num in range(number_alien_x):
            alien = Alien(screen)
            alien.x = alien_width + alien_width * alien_num
            alien.y = alien_height + alien_height * row_number
            alien.rect.x = alien.x
            alien.rect.y = alien.rect.height +  alien.rect.height * row_number
            aliens.add(alien)
            
            
            
def check_high_score(stats, sc):
    
    
    if stats.scope > stats.high_score:
        stats.high_score = stats.scope
        sc.image_high_score()
        with open('high_score.txt', 'w') as f:
            f.write(str(stats.high_score))