pygame file

import pygame
import random

pygame.init()

width = 1280
height = 720
screen = pygame.display.set_mode((width,height))
white = (255,255,255)
black = (0,0,0)
running = True
stars = []
center_x = width//2
center_y = height//2
radius = 10

class Star:
    def __init__(self):
        self.x = random.randint(-width,width)
        self.y = random.randint(-height,height)
        self.z = random.randint(center_y,width)
        self.pz = self.z

    def update(self):
        self.z -= 10
        if self.z < 1: # when our z is reduced too much instead of crashing we remake the points to be at random new spots, this also saves us from having to make a new star too
            self.x = random.randint(-width, width)
            self.y = random.randint(-height, height)
            self.z = random.randint(center_y, width)
            self.pz = self.z

    def show(self):
        sx = self.x / self.z * center_y + center_x
        sy = self.y / self.z * center_y + center_y
        pygame.draw.circle(screen, white, (sx,sy), radius)


for i in range(0,26):
        stars.append(Star()) # add 100 random stars to our list

while running:
    screen.fill(black)


    for star in stars:
        star.update()
        star.show()

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

    pygame.display.flip()