Python realizes greedy snake __python

#!/usr/bin/env python #__ *__ coding:utf-8 __*__ import pygame,sys,time,random from pygame.locals import * Redcolour = Pygame. Color (255,0,0) Blackcolour = Pygame. Color (0,0,0) Whitecolour = Pygame. Color (255,255,255) Greycolour = Pygame. Color (150,150,150) def gameover (playsurface): Gameoverfont = Pygame.font.Font (' Arial.ttf ',) Gameoversurf = Gameoverf Ont.render (' Game over ', true,greycolour) Gameoverrect = Gameoversurf.get_rect () Gameoverrect.midtop = (320,10) playSurf Ace.blit (Gameoversurf,gameoverrect) Pygame.display.flip () Time.sleep (5) Pygame.quit () Sys.exit () def main (): Pygame. init () Playsurface = Pygame.display.set_mode ((640,480)) Fpsclock = Pygame.time.Clock () pygame.display.set_caption (' Snake Liu ') snakeposition = [100,100] snakesegments = [[100,100],[80,100],[60,100]] raspberryposition = [300,300] ras pberryspawned = 1 Direction = ' right ' changedirection = direction while true:for event in Pygame.event.get (): If
	Event.type = = QUIT:sys.exit ()		elif Event.type = = Keydown:if Event.key = = K_right or Event.key = Ord (' d '): Changedirection = ' right ' if Event.key = = K_left or Event.key = Ord (' A '): Changedirection = ' Left ' if event.key = = k_up or Event.key = = Ord ('  W '): changedirection = ' up ' if event.key = = k_down/Event.key = = Ord (' s '): changedirection = ' down ' if Event.key = = K_ESCAPE:pygame.event.post (pygame.event.Event (QUIT)) # To determine whether to enter the opposite direction, with the original changes if changedirection = = ' Ri Ght ': direction = changedirection if changedirection = = ' Left ': direction = changedirection if changedirection =  = ' up ': direction = changedirection if changedirection = ' down ': direction = changedirection # Moving the coordinates of the snake head according to the direction if Direction = = ' right ': snakeposition[0] + = if direction = ' Left ': snakeposition[0]-= if direction = ' Up ': snakeposition[1] = Direction = = ' down ': snakeposition[1] + = 20 # Increase the length of the Snake Snakesegments.insert (0,list ( snakeposition)) # to determine whetherAte the raspberry if snakeposition[0] = = Raspberryposition[0] and snakeposition[1] = = Raspberryposition[1]: raspberryspawned = 0 Else:snakeSegments.pop () # If you eat raspberries, regenerate the raspberry if raspberryspawned = = 0:x = Random.randrange (1,32) y = random. Randrange (1,24) raspberryposition = [Int (x*20), int (y*20)] raspberryspawned = 1 # refresh Pygame display layer Playsurface.fill (b Lackcolour) for position in SnakeSegments:pygame.draw.rect (Playsurface,whitecolour,rect (position[0],position[1],20
		)) Pygame.draw.rect (Playsurface,redcolour,rect (raspberryposition[0], raspberryposition[1],20,20)) Pygame.display.flip () # To determine whether death, the following lines and original changes if SNAKEPOSITION[0] > 620 or snakeposition[0] < 0:gameover (PLAYSU Rface) if snakeposition[1] > 460 or snakeposition[1] < 0:gameover (playsurface) for snakebody in Snakesegment S[1:]: if snakeposition[0] = = Snakebody[0] and snakeposition[1] = = Snakebody[1]: Gameover (playsurface) fpsclock.t
Ick (5) if __name__ = = "__main__": Main ()