贪吃蛇visual studio code程序代码

以下是一个简单的贪吃蛇游戏的VSCode程序代码（使用Python语言）：

import pygame, sys, random, time
 
difficulty = 25
# Easy   -> 50
# Medium -> 25
# Hard   -> 10
 
# Window size
frame_size_x = 720
frame_size_y = 480
 
# Checks for errors encountered 
check_errors = pygame.init()
if check_errors[1] > 0:
    print(f"[!] Had {check_errors[1]} errors when initialising game, exiting...")
    sys.exit(-1)
else:
    print("[+] Game successfully initialised")
 
# Initialise game window
pygame.display.set_caption('Snake Game @ Python')
game_window = pygame.display.set_mode((frame_size_x, frame_size_y))
 
# Colors (R, G, B)
black = pygame.Color(0, 0, 0)
white = pygame.Color(255, 255, 255)
red = pygame.Color(200, 0, 0)
green = pygame.Color(0, 255, 0)
blue = pygame.Color(0, 0, 255)
 
# FPS (Frames Per Second) controller
fps_controller = pygame.time.Clock()
 
# Game variables
snake_position = [100, 50]
snake_body = [[100, 50], [90, 50], [80, 50]]
 
food_position = [random.randrange(1, (frame_size_x//10)) * 10,
                  random.randrange(1, (frame_size_y//10)) * 10]
food_spawn = True
 
direction = 'RIGHT'
change_to = direction
 
score = 0
 
# Game Over
def game_over():
    my_font = pygame.font.SysFont('times new roman', 90)
    game_over_surface = my_font.render('YOU DIED', True, red)
    game_over_rect = game_over_surface.get_rect()
    game_over_rect.midtop = (frame_size_x/2, frame_size_y/4)
    game_window.blit(game_over_surface, game_over_rect)
    pygame.display.flip()
    time.sleep(3)
    pygame.quit()
    sys.exit()
 
# Main Function
while True:
    
    # Handling key events
    for event in pygame.event.get():
        if event.type == pygame.KEYDOWN:
            if event.key == pygame.K_UP:
                change