Partikkelsyste - starkode

import pygame, math, random
pygame.init()
clock = pygame.time.Clock()
WIDTH = 800
HEIGHT = 600
screen = pygame.display.set_mode((WIDTH, HEIGHT))

while True:

    clock.tick(30)
    pygame.display.update()

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

pygame.quit()