pygame实现贪吃蛇

为了简化起见，游戏素材暂定为两张简单的图片（文中用的是30*30）。
大家很方便就能制作。

背景也是纯黑填充。
各种音乐字体特效玩法场景等大家可以自由发挥

import pygame
import sys
import random
fps=6    #设置帧率
move={'up':[-30,0],'down':[30,0],'left':[0,-30],'right':[0,30]}  #上下左右映射为值
   
class MOCCASIN(object):  #蛇类
    def __init__(self):
        self.scheme=pygame.image.load('moccasin.png')
        self.x=int(20*random.random())*30
        self.y=int(20*random.random())*30
        self.body=[[self.x,self.y],[self.x,self.y+30],[self.x,self.y+60]]
        self.direct='up'
       
    def update(self):
        self.x+=move[self.direct][1]
        self.y+=move[self.direct][0]
        self.body.insert(0,[self.x,self.y])

class FOOD(object):  #食物类
    def __init__(self):
        self.scheme=pygame.image.load('food.png')
        self.coordinate=(int(20*random.random())*30,int(20*random.random())*30)

def updateMap():  #场景更新
    screen.fill((0,0,0))
    moccasin.update()
    screen.blit(food.scheme,food.coordinate)
    for x in moccasin.body:
        screen.blit(moccasin.scheme,tuple(x)+(30,30))

def bitself():  #是否咬到自己
    dct={}
    for ll in moccasin.body:
        if tuple(ll) in dct :return True
        dct[tuple(ll)]=1
    return False       
        
if __name__=='__main__':
    pygame.init()
    pygame.display.set_caption('「moccasin」')
    screen=pygame.display.set_mode((600,600))

    food=FOOD()
    moccasin=MOCCASIN()
    clk=pygame.time.Clock()

    while True:
        clk.tick(fps)
        for event in pygame.event.get():
            if event.type==pygame.QUIT:
                sys.exit()
            elif event.type==pygame.KEYDOWN:
                if event.key==pygame.K_UP and moccasin.direct!='down':
                    moccasin.direct='up'
                if event.key==pygame.K_DOWN and moccasin.direct!='up':
                    moccasin.direct='down'
                if event.key==pygame.K_LEFT and moccasin.direct!='right':
                    moccasin.direct='left'
                if event.key==pygame.K_RIGHT and moccasin.direct!='left':
                    moccasin.direct='right'
                    
        if not (0<=moccasin.x<600 and 0<=moccasin.y<600) or bitself(): 
            break;                                      #检测蛇是否死亡
        
        if food.coordinate==tuple(moccasin.body[0]): #是否吃到食物
            food=FOOD()
        else: moccasin.body.pop()
            
        updateMap() #更新地图
        pygame.display.update()
        
    #蛇死亡，游戏结束
    screen.fill((0,0,0))
    tips="失 败"
    tipsFont=pygame.font.Font('C:WindowsFontsmsyh.ttc',100)
    tipsSurf=tipsFont.render(tips,1,(255,255,255))
    screen.blit(tipsSurf,(screen.get_width()/2-tipsSurf.get_width()/2,256))
    pygame.display.flip()