import pygame
import sys

# Initialize Pygame
pygame.init()

# Screen dimensions
WIDTH, HEIGHT = 800, 600
screen = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption("Ping Pong with Main Menu")

# Colors
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
GRAY = (100, 100, 100)

# Fonts
font = pygame.font.SysFont(None, 50)

# Define paddles and ball
paddle_width, paddle_height = 10, 100
ball_size = 20

# Main menu function
def main_menu():
    while True:
        screen.fill(BLACK)
        title_text = font.render("Ping Pong Main Menu", True, WHITE)
        start_text = font.render("Press ENTER to Start", True, GRAY)
        quit_text = font.render("Press Q to Quit", True, GRAY)

        screen.blit(title_text, (WIDTH//2 - title_text.get_width()//2, HEIGHT//3))
        screen.blit(start_text, (WIDTH//2 - start_text.get_width()//2, HEIGHT//3 + 60))
        screen.blit(quit_text, (WIDTH//2 - quit_text.get_width()//2, HEIGHT//3 + 120))
        pygame.display.flip()

        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                sys.exit()
            elif event.type == pygame.KEYDOWN:
                if event.key == pygame.K_RETURN:
                    game_loop()
                elif event.key == pygame.K_q:
                    pygame.quit()
                    sys.exit()

# Main game loop
def game_loop():
    # Initial positions
    left_paddle = pygame.Rect(10, HEIGHT//2 - paddle_height//2, paddle_width, paddle_height)
    right_paddle = pygame.Rect(WIDTH - 20, HEIGHT//2 - paddle_height//2, paddle_width, paddle_height)
    ball = pygame.Rect(WIDTH//2 - ball_size//2, HEIGHT//2 - ball_size//2, ball_size, ball_size)

    ball_speed = [4, 4]
    paddle_speed = 5

    clock = pygame.time.Clock()

    while True:
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                sys.exit()

        # Keys pressed
        keys = pygame.key.get_pressed()

        # Left paddle controls (W/S)
        if keys[pygame.K_w] and left_paddle.top > 0:
            left_paddle.y -= paddle_speed
        if keys[pygame.K_s] and left_paddle.bottom < HEIGHT:
            left_paddle.y += paddle_speed

        # Right paddle controls (UP/DOWN)
        if keys[pygame.K_UP] and right_paddle.top > 0:
            right_paddle.y -= paddle_speed
        if keys[pygame.K_DOWN] and right_paddle.bottom < HEIGHT:
            right_paddle.y += paddle_speed

        # Move ball
        ball.x += ball_speed[0]
        ball.y += ball_speed[1]

        # Collisions with top/bottom
        if ball.top <= 0 or ball.bottom >= HEIGHT:
            ball_speed[1] = -ball_speed[1]

        # Collisions with paddles
        if ball.colliderect(left_paddle) and ball_speed[0] < 0:
            ball_speed[0] = -ball_speed[0]
        if ball.colliderect(right_paddle) and ball_speed[0] > 0:
            ball_speed[0] = -ball_speed[0]

        # Check for scoring
        if ball.left <= 0:
            # Right player scores
            ball.center = (WIDTH//2, HEIGHT//2)
            ball_speed = [4, 4]
        elif ball.right >= WIDTH:
            # Left player scores
            ball.center = (WIDTH//2, HEIGHT//2)
            ball_speed = [-4, 4]

        # Drawing
        screen.fill(BLACK)
        pygame.draw.rect(screen, WHITE, left_paddle)
        pygame.draw.rect(screen, WHITE, right_paddle)
        pygame.draw.ellipse(screen, WHITE, ball)
        pygame.draw.aaline(screen, WHITE, (WIDTH//2, 0), (WIDTH//2, HEIGHT))

        pygame.display.flip()
        clock.tick(60)

# Run the main menu
main_menu()