import pygame

import sys

# Initialize Pygame

pygame.init()

# Constants

SCREEN_WIDTH = 800

SCREEN_HEIGHT = 600

WHITE = (255, 255, 255)

BLACK = (0, 0, 0)

BALL_RADIUS = 15

# Set up the screen

screen = pygame.display.set_mode((SCREEN_WIDTH, SCREEN_HEIGHT))

pygame.display.set_caption("Simple Pool Game")

# Ball class

class Ball:

    def __init__(self, x, y, color):

        self.x = x

        self.y = y

        self.color = color

    

    def draw(self):

        pygame.draw.circle(screen, self.color, (self.x, self.y), BALL_RADIUS)

# Main function

def main():

    ball = Ball(SCREEN_WIDTH // 2, SCREEN_HEIGHT // 2, WHITE)

    # Game loop

    while True:

        screen.fill(BLACK)

        # Event handling

        for event in pygame.event.get():

            if event.type == pygame.QUIT:

                pygame.quit()

                sys.exit()

        # Draw the ball

        ball.draw()

        # Update the display

        pygame.display.flip()

# Run the game

if __name__ == "__main__":

    main()