main

#Main game loop
running = True
while running:
    screen.fill(WHITE)

    # Event handling
    for event in pygame.event.get():
        if event.type == pygame.QUIT:
            running = False

    # Player control
    keys = pygame.key.get_pressed()
    if keys[pygame.K_LEFT]:
        car_x -= car_speed
    if keys[pygame.K_RIGHT]:
        car_x += car_speed

    # Boundary checking for player car
    if car_x < 0:
        car_x = 0
    elif car_x > WIDTH - car_width:
        car_x = WIDTH - car_width

    # Generate obstacles
    if random.randrange(0, 100) < obstacle_frequency:
        obstacle_x = random.randrange(0, WIDTH - obstacle_width)
        obstacle_y = -obstacle_height
        obstacles.append([obstacle_x, obstacle_y])

    # Generate coins
    if random.randrange(0, 100) < coin_frequency:
        coin_x = random.randrange(0, WIDTH - coin_width)
        coin_y = -coin_height
        coins.append([coin_x, coin_y])

    # Move obstacles and coins
    for obstacle in obstacles:
        obstacle[1] += obstacle_speed
        screen.blit(obstacle_img, (obstacle[0], obstacle[1]))
        if obstacle[1] > HEIGHT:
            obstacles.remove(obstacle)
            score -= 10

    for coin in coins:
        coin[1] += obstacle_speed
        screen.blit(coin_img, (coin[0], coin[1]))
        if coin[1] > HEIGHT:
            coins.remove(coin)

    # Collision detection
    car_rect = pygame.Rect(car_x, car_y, car_width, car_height)
    for obstacle in obstacles:
        obstacle_rect = pygame.Rect(obstacle[0], obstacle[1], obstacle_width, obstacle_height)
        if car_rect.colliderect(obstacle_rect):
            obstacles.remove(obstacle)
            score -= 50

    for coin in coins:
        coin_rect = pygame.Rect(coin[0], coin[1], coin_width, coin_height)
        if car_rect.colliderect(coin_rect):
            coins.remove(coin)
            score += 10

    # Display score
    display_text("Score: " + str(score), BLACK, 10, 10)

    # Draw player car
    screen.blit(car_img, (car_x, car_y))

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

pygame.quit()