This is the Error i got in python while executing a simple snake game program that i was working on
File "C:\Users\vicky\OneDrive\Desktop\ALL PYTHON\snake game final\snake_game.py", line 147, in gameLoop if event.type == pygame.KEYDOWN: UnboundLocalError: local variable 'event' referenced before assignment
The Code of the Program is given below:
import pygame
import time
import random
pygame.init()
pygame.mixer.init()
white = (255, 255, 255)
yellow = (255, 255, 102)
black = (0, 0, 0)
red = (213, 50, 80)
green = (0, 255, 0)
blue = (50, 153, 213)
glow_blue = (115, 194, 251)
dis_width = 800
dis_height = 600
FPS = 30
fpsClock = pygame.time.Clock()
dis = pygame.display.set_mode([dis_width,dis_height])
pygame.display.set_caption("Snake Game ")
snake_block = 20
score_font = pygame.font.SysFont("Algerian", 35)
finish_font = pygame.font.SysFont("copper", 55)
back_image = pygame.image.load(r"C:\Users\vicky\OneDrive\Desktop\ALL PYTHON\snake game final\back_ground2.jpg")
game_finish = pygame.image.load(r"C:\Users\vicky\OneDrive\Desktop\ALL PYTHON\snake game final\finish.jpg")
last_score = pygame.font.SysFont("Algerian", 35)
finish_score = last_score.render("Your Score", True, black)
def Your_score(score):
value = score_font.render("Your Score: " + str(score), True, red)
dis.blit(value, [20, 20])
def our_snake(snake_block, snake_list):
for x in snake_list:
#dis.blit(snake_logo,[x[0], x[1], snake_block, snake_block])
pygame.draw.rect(dis, black, [x[0], x[1], snake_block, snake_block])
def message(msg, color):
mesg = finish_font.render(msg, True, color)
dis.blit(mesg, [130, 468])
def gameLoop():
game_over = False
game_close = False
x1 = dis_width / 2
y1 = dis_height / 2
x1_change = 0
y1_change = 0
snake_List = []
Length_of_snake = 1
foodx = round(random.randrange(0, dis_width - snake_block) / 20) * 20
foody = round(random.randrange(0, dis_height - snake_block) / 20) * 20
while not game_over:
while game_close == True:
dis.blit(game_finish,[-130,0])
message("Press C-Play Again or Q-Quit", white)
Your_score(Length_of_snake - 1)
pygame.display.update()
for event in pygame.event.get():
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_q:
game_over = True
game_close = False
if event.key == pygame.K_c:
gameLoop()
if event.type == pygame.QUIT:
game_over = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_ESCAPE:
pygame.quit()
quit()
for event in pygame.event.get():
if event.type == pygame.QUIT:
game_over = True
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_LEFT:
x1_change = -snake_block
y1_change = 0
elif event.key == pygame.K_RIGHT:
x1_change = snake_block
y1_change = 0
elif event.key == pygame.K_UP:
y1_change = -snake_block
x1_change = 0
elif event.key == pygame.K_DOWN:
y1_change = snake_block
x1_change = 0
if x1 >= dis_width or x1 < 0 or y1 >= dis_height or y1 < 0:
pygame.mixer.music.load("out.wav")
pygame.mixer.music.play()
game_close = True
x1 += x1_change
y1 += y1_change
dis.blit(back_image,[0,0])
pygame.draw.rect(dis, white, [foodx, foody, snake_block, snake_block])
#pygame.draw.circle(dis, white, [foodx, foody], 15,0)
snake_Head = []
snake_Head.append(x1)
snake_Head.append(y1)
snake_List.append(snake_Head)
if len(snake_List) > Length_of_snake:
del snake_List[0]
for x in snake_List[:-1]:
if x == snake_Head:
game_close = True
our_snake(snake_block, snake_List)
Your_score(Length_of_snake - 1)
pygame.display.update()
if x1 == foodx and y1 == foody:
pygame.mixer.music.load("beep.wav")
pygame.mixer.music.play()
foodx = round(random.randrange(0, dis_width - snake_block) / 20.0) * 20.0
foody = round(random.randrange(0, dis_height - snake_block) / 20.0) * 20.0
Length_of_snake += 1
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_ESCAPE:
pygame.quit()
quit()
fpsClock.tick(FPS)
pygame.quit()
quit()
gameLoop()
At the end, in :
if event.type == pygame.KEYDOWN:
if event.key == pygame.K_ESCAPE:
pygame.quit()
quit()
event is not defined.
I think you should move this condition in the for event in pygame.event.get(): loop higher in your code.
Also I recommend you hide you personal data by changing every occurrence of you path with as it does not add any info regarding your issue.