It was working before, then I added the enemy rectangle and it has stopped working.
import time, copy
import pygame
import random
import os
WINDOW_WIDTH = 560
WINDOW_HEIGHT = 560
WINDOW = pygame.display.set_mode((WINDOW_WIDTH, WINDOW_HEIGHT))
red =(255,0,0)
green =(0,255,50)
yellow =(255,255,0)
black = (0,0,0)
white = (255,255,255)
WINDOW.fill(black)
pygame.display.update()
a = 20
b = 20
L = False
R = False
U = False
D = False
##x = [20,40,60,80,100,120,140,160,180,200,220,240,260,280,300,320,340,360,380,400,420,440,460,480,500,520]
##ex = x[random.randint(0,24)]
##ey = x[random.randint(0,24)]
player = pygame.Rect(a,b,20,20)
pygame.draw.rect(WINDOW, green, player)
##enemy = pygame.Rect(ex,ey,20,20)
##pygame.draw.rect(WINDOW, red, enemy)
pygame.display.update()
while True:
for event in pygame.event.get():
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT:
L = True
elif event.key == pygame.K_RIGHT:
R = True
elif event.key == pygame.K_UP:
U = True
elif event.key == pygame.K_DOWN:
D = True
elif event.type == pygame.KEYUP:
if event.key == pygame.K_LEFT:
L = False
elif event.key == pygame.K_RIGHT:
R = False
elif event.key == pygame.K_UP:
U = False
elif event.key == pygame.K_DOWN:
D = False
if(D):
if b < 540:
pygame.draw.rect(WINDOW, black, player)
b = b+20
player = pygame.Rect(a,b,20,20)
pygame.draw.rect(WINDOW, green, player)
elif(U):
if b != 0:
pygame.draw.rect(WINDOW, black, player)
b = b-20
player = pygame.Rect(a,b,20,20)
pygame.draw.rect(WINDOW, green, player)
elif(R):
if a < 540:
pygame.draw.rect(WINDOW, black, player)
a = a+20
player = pygame.Rect(a,b,20,20)
pygame.draw.rect(WINDOW, green, player)
elif(L):
if a != 0:
pygame.draw.rect(WINDOW, black, player)
a = a-20
player = pygame.Rect(a,b,20,20)
pygame.draw.rect(WINDOW, green, player)
## time.sleep(0.2)
## if ex < a:
## pygame.draw.rect(WINDOW, black, enemy)
## ex = ex+20
## enemy = pygame.Rect(ex,ey,20,20)
## pygame.draw.rect(WINDOW, red, enemy)
## elif ex > a:
## pygame.draw.rect(WINDOW, black, enemy)
## ex = ex-20
## enemy = pygame.Rect(ex,ey,20,20)
## pygame.draw.rect(WINDOW, red, enemy)
## elif ey > b:
## pygame.draw.rect(WINDOW, black, enemy)
## ey = ey-20
## enemy = pygame.Rect(ex,ey,20,20)
## pygame.draw.rect(WINDOW, red, enemy)
## elif ey > b:
## pygame.draw.rect(WINDOW, black, enemy)
## ey = ey-20
## enemy = pygame.Rect(ex,ey,20,20)
## pygame.draw.rect(WINDOW, red, enemy)
## pygame.display.update()
## if ex == a and ey == b:
## WINDOW.fill(white)
## pygame.display.update()
## time.sleep(2)
## os._exit(1)