main.py

import pygame
from settings import *
from player import Player
from enemy import Enemy
from bullet import Bullet

# Initialize Pygame
pygame.init()
screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))
pygame.display.set_caption(TITLE)
clock = pygame.time.Clock()

# Sprite Groups (Manages all objects efficiently)
all_sprites = pygame.sprite.Group()
mobs = pygame.sprite.Group()
bullets = pygame.sprite.Group()

# Create Player
player = Player()
all_sprites.add(player)

# Create 8 Enemies
for i in range(8):
    m = Enemy()
    all_sprites.add(m)
    mobs.add(m)

# --- Game Loop ---
running = True
while running:
    # 1. Process Input
    clock.tick(FPS)
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False
        elif event.type == pygame.KEYDOWN:
            if event.key == pygame.K_SPACE:
                bullet = Bullet(player.rect.centerx, player.rect.top)
                all_sprites.add(bullet)
                bullets.add(bullet)

    # 2. Update
    all_sprites.update()

    # Check if a bullet hit a mob
    hits = pygame.sprite.groupcollide(mobs, bullets, True, True)
    for hit in hits:
        # Respawn the enemy
        m = Enemy()
        all_sprites.add(m)
        mobs.add(m)

    # Check if a mob hit the player
    hits = pygame.sprite.spritecollide(player, mobs, False)
    if hits:
        running = False  # Game Over

    # 3. Draw / Render
    screen.fill(BLACK)
    all_sprites.draw(screen)
    pygame.display.flip()

pygame.quit()