A Pong game made with python

pythonPONG

import pygame
import random
pygame.init()

#Variables
sc_width = 800
sc_height = 600
ballx = 2
bally = 2
clock = pygame.time.Clock()
player1score =0
player2score =0
ballspeed=125
start =False
screen = pygame.display.set_mode((sc_width, sc_height))
font = pygame.font.SysFont('Arial',30)
run = False
colors = [(255,0,0),(0.255,0),(0,0,255),(0,0,0),(128,0,128)]
colorindex1 = 0
colorindex2 = 0

#Game Rectangles
player1 = pygame.Rect(15, sc_height/2 - 70, 10, 200)
player2 = pygame.Rect(780, sc_height/2 - 70, 10, 200)

#ball movement
ball =pygame.Rect(screen.get_rect().centerx-10, screen.get_rect().centery-10, 20,20)

def draw_screen():
  screen.fill((255,0,0))
  pygame.draw.rect(screen, colors[colorindex1], player1)
  pygame.draw.rect(screen, colors[colorindex2], player2)
  pygame.draw.rect(screen, (0,0,0), player2)
  pygame.draw.ellipse(screen, (0, 0, 255), ball)
  pygame.draw.aaline(screen,(0,0,0),(sc_width/2,10),(sc_width/2,sc_height-10))
  pygame.draw.aaline(screen,(0,0,0),(10,10),(10,sc_height-10))  
  pygame.draw.aaline(screen,(0,0,0),(sc_width-10,10),(sc_width-10,sc_height-10))  
  pygame.draw.aaline(screen,(0,0,0),(10,10),(sc_width-10,10))    
  pygame.draw.aaline(screen,(0,0,0),(10,sc_height-10),(sc_width-10,sc_height-10))    
  
  points = font.render("P1:"+str(player1score)+"        Ballspeed: "+str(ballspeed)+"            P2:"+str(player2score),True,(0,0,0))
  
  screen.blit(points,(100,70))

def ball_move():
  global ballx
  global bally
  global player2score
  global player1score
  global ballspeed
  ball.x=ball.x+ ballx 
  ball.y=ball.y+ bally 
  if ball.top <= 10 or ball.bottom >= sc_height -10:
    bally *=-1
  if ball.left <= 10 or ball.right >= sc_width -10:
    ballx *=-1
  if ball.colliderect(player1) or ball.colliderect(player2):
    ballx *=-1
    
  if ball.left <= 10 or ball.right >= sc_width -10:
    if ball.left <=10:
      player2score = player2score +1
      ballspeed+=50
    if ball.right >= sc_width -10:
      player1score = player1score +1
      ballspeed+=50
    ball.x = sc_width/2-15
    ball.y = sc_height/2-15
    pygame.time.delay(ballspeed)


while run == False:
  screen.fill((255,255,255))
  text = font.render("welcome to pong! hit down + enter to begin",True,(0,0,0))
  screen.blit(text,(100,sc_height/2))
  for event in pygame.event.get():
    if event.type == pygame.QUIT:
      pygame.quit()
#make an if statment that checks for       
    if event.type == pygame.KEYDOWN:
      if event.key == pygame.K_RETURN:
        run = True
  pygame.display.update()
  
while True:
  for event in pygame.event.get():
    if event.type == pygame.QUIT:
      pygame.quit()
#   if event.type == pygame.KEYDOWN:
#      if event.key == pygame.K_RETURN:
#        start = True
        


  keys = pygame.key.get_pressed()
  if keys[pygame.K_w]:
    if player1.top > 15:
      player1.y -= 2
  if keys[pygame.K_s]:
    if player1.bottom < sc_height - 15:
      player1.y += 2

  if keys[pygame.K_UP]:
    if player2.top > 15:
      player2.y -= 2
  if keys[pygame.K_DOWN]:
    if player2.bottom < sc_height - 15:
      player2.y += 2
  
  ball_move()
  draw_screen()
  pygame.display.update()
#pygame.display.flip()
  clock.tick(ballspeed)
pygame.quit()