import pygame
import random
import sys

# Инициализация
pygame.init()

# Константы
WIDTH, HEIGHT = 800, 600
FPS = 60
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
RED = (255, 0, 0)
GREEN = (0, 255, 0)
BLUE = (0, 0, 255)
YELLOW = (255, 255, 0)

# Настройки окна
screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("Space Shooter")
clock = pygame.time.Clock()

class Player(pygame.sprite.Sprite):
    def __init__(self):
        super().__init__()
        self.image = pygame.Surface((50, 40))
        self.image.fill(BLUE)
        self.rect = self.image.get_rect()
        self.rect.centerx = WIDTH // 2
        self.rect.bottom = HEIGHT - 10
        self.speed = 5
        self.health = 5
        self.last_shot = 0
        self.shoot_delay = 250  # миллисекунды

    def update(self):
        # Управление
        keys = pygame.key.get_pressed()
        if keys[pygame.K_LEFT] and self.rect.left > 0:
            self.rect.x -= self.speed
        if keys[pygame.K_RIGHT] and self.rect.right < WIDTH:
            self.rect.x += self.speed
        if keys[pygame.K_UP] and self.rect.top > 0:
            self.rect.y -= self.speed
        if keys[pygame.K_DOWN] and self.rect.bottom < HEIGHT:
            self.rect.y += self.speed

    def shoot(self):
        now = pygame.time.get_ticks()
        if now - self.last_shot > self.shoot_delay:
            self.last_shot = now
            bullet = Bullet(self.rect.centerx, self.rect.top)
            all_sprites.add(bullet)
            bullets.add(bullet)

class Enemy(pygame.sprite.Sprite):
    def __init__(self):
        super().__init__()
        self.image = pygame.Surface((40, 30))
        self.image.fill(RED)
        self.rect = self.image.get_rect()
        self.rect.x = random.randrange(WIDTH - self.rect.width)
        self.rect.y = random.randrange(-100, -40)
        self.speed_y = random.randrange(3, 8)
        self.speed_x = random.randrange(-3, 3)

    def update(self):
        self.rect.y += self.speed_y
        self.rect.x += self.speed_x
        
        # Возврат вверх, если ушел за край
        if self.rect.top > HEIGHT + 10 or self.rect.right < -50 or self.rect.left > WIDTH + 50:
            self.rect.x = random.randrange(WIDTH - self.rect.width)
            self.rect.y = random.randrange(-100, -40)
            self.speed_y = random.randrange(3, 8)

class Bullet(pygame.sprite.Sprite):
    def __init__(self, x, y):
        super().__init__()
        self.image = pygame.Surface((5, 10))
        self.image.fill(YELLOW)
        self.rect = self.image.get_rect()
        self.rect.centerx = x
        self.rect.bottom = y
        self.speed = -10

    def update(self):
        self.rect.y += self.speed
        if self.rect.bottom < 0:
            self.kill()

class PowerUp(pygame.sprite.Sprite):
    def __init__(self, x, y):
        super().__init__()
        self.image = pygame.Surface((20, 20))
        self.image.fill(GREEN)
        self.rect = self.image.get_rect()
        self.rect.x = x
        self.rect.y = y
        self.speed_y = 3

    def update(self):
        self.rect.y += self.speed_y
        if self.rect.top > HEIGHT:
            self.kill()

def show_text(text, size, x, y, color=WHITE):
    font = pygame.font.Font(None, size)
    text_surface = font.render(text, True, color)
    text_rect = text_surface.get_rect()
    text_rect.center = (x, y)
    screen.blit(text_surface, text_rect)

def game_over_screen(score):
    screen.fill(BLACK)
    show_text("GAME OVER", 64, WIDTH//2, HEIGHT//2 - 50, RED)
    show_text(f"Score: {score}", 36, WIDTH//2, HEIGHT//2 + 20)
    show_text("Press R to restart or Q to quit", 24, WIDTH//2, HEIGHT//2 + 80)
    pygame.display.flip()
    
    waiting = True
    while waiting:
        clock.tick(FPS)
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                return False
            if event.type == pygame.KEYDOWN:
                if event.key == pygame.K_r:
                    return True
                if event.key == pygame.K_q:
                    return False

def main():
    # Группы спрайтов
    global all_sprites, bullets, enemies, powerups
    
    all_sprites = pygame.sprite.Group()
    bullets = pygame.sprite.Group()
    enemies = pygame.sprite.Group()
    powerups = pygame.sprite.Group()
    
    player = Player()
    all_sprites.add(player)
    
    # Создание врагов
    for i in range(8):
        enemy = Enemy()
        all_sprites.add(enemy)
        enemies.add(enemy)
    
    score = 0
    running = True
    enemy_timer = 0
    powerup_timer = 0
    
    # Игровой цикл
    while running:
        clock.tick(FPS)
        
        # Обработка событий
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                running = False
            elif event.type == pygame.KEYDOWN:
                if event.key == pygame.K_SPACE:
                    player.shoot()
        
        # Обновление
        all_sprites.update()
        
        # Создание новых врагов
        enemy_timer += 1
        if enemy_timer > 60:  # Новый враг каждую секунду
            enemy_timer = 0
            enemy = Enemy()
            all_sprites.add(enemy)
            enemies.add(enemy)
        
        # Создание бонусов
        powerup_timer += 1
        if powerup_timer > 300 and random.random() < 0.02:  # Редкие бонусы
            powerup_timer = 0
            powerup = PowerUp(random.randrange(WIDTH - 20), -20)
            all_sprites.add(powerup)
            powerups.add(powerup)
        
        # Проверка столкновений пуль с врагами
        hits = pygame.sprite.groupcollide(enemies, bullets, True, True)
        for hit in hits:
            score += 10
            enemy = Enemy()
            all_sprites.add(enemy)
            enemies.add(enemy)
        
        # Проверка столкновений игрока с врагами
        hits = pygame.sprite.spritecollide(player, enemies, False)
        if hits:
            player.health -= len(hits)
            for hit in hits:
                hit.kill()
                enemy = Enemy()
                all_sprites.add(enemy)
                enemies.add(enemy)
        
        # Проверка столкновений с бонусами
        hits = pygame.sprite.spritecollide(player, powerups, True)
        if hits:
            player.health += len(hits)
            player.health = min(player.health, 10)  # Максимум 10 жизней
        
        # Проверка здоровья игрока
        if player.health <= 0:
            if game_over_screen(score):
                return main()  # Перезапуск игры
            else:
                running = False
                break
        
        # Отрисовка
        screen.fill(BLACK)
        all_sprites.draw(screen)
        
        # Отображение HUD
        show_text(f"Health: {player.health}", 24, 70, 20)
        show_text(f"Score: {score}", 24, WIDTH - 70, 20)
        
        pygame.display.flip()
    
    pygame.quit()
    sys.exit()

if __name__ == "__main__":
    main()