1 class point:
 2     row=0
 3     col=0
 4     def __init__(self,row,col):
 5         self.row=row
 6         self.col=col
 7     def copy(self):
 8         return point(row=self.row,col=self.col)
 9 #初始化框架
10 import pygame
11 import random
12 pygame.init()
13 width=800
14 height=600
15 ROW=30
16 COL=40
17
 
 size=(width,height)
18 window=pygame.display.set_mode(size)
19 pygame.display.set_caption('mlhj')
20 head=point(row=random.randint(0,ROW-1),col=random.randint(0,COL-1))
21 food=point(row=random.randint(0,ROW-1),col=random.randint(0,COL-1))
22 quit=True
23 clock =pygame.time.Clock()
24 back_color=(255,255,255)
 
25 head_color=(255,0,0)
26 snake_color=(128,128,128)
27 food_color=(0,128,128)
28 snakes=[]
29 def rect(point,color):
30     cell_width=width/COL
31     cell_height=height/ROW
32     left=point.col*(cell_width)
33     top=point.row*(cell_height)
34     pygame.draw.rect(window, color, (left, top, cell_width, cell_height))
 
35     pass


36 dir='left'
37 while quit:
38     for event in pygame.event.get():
39         print(event)
40         if event.type==pygame.QUIT:
41             quit = False
42         elif event.type==pygame.KEYDOWN:
43             if event.key==273:
44                 if dir=='left' or dir=='right':
45                     dir='up'
46             elif event.key==274:
47                 if dir == 'left' or dir == 'right':
48                     dir='down'
49             elif event.key == 275:
50                 if dir == 'up' or dir == 'down':
51                     dir = 'right'
52             elif event.key == 276:
53                 if dir == 'up' or dir == 'down':
54                     dir = 'left'
55     eat = (head.row==food.row and head.col==food.col)
56     snakes.insert(0,point.copy(head))
57     if not eat:                    #如果沒吃到，移動的時候就把尾巴給‘扔了’，如果遲到了食物，則會增加一節，這一節剛好就是需要pop的那一個位置
58         snakes.pop()
59     if eat:
60         food = point(row=random.randint(0, ROW - 1), col=random.randint(0, COL - 1))
61         #碰到邊界死亡
62     if head.col>40 or head.row<0 or head.row>30or head.col<0:
63         quit=False
64         #碰到自己的身體死亡
65     for snake in snakes:
66         if snake.row==head.row and snake.col==head.col:
67             quit=False
68     if dir=='left':
69         head.col-=1
70     elif dir=='right':
71         head.col+=1
72     elif dir=='up':
73         head.row-=1
74     elif dir == 'down':
75         head.row += 1
76     #渲染，將舌頭蛇身食物等在介面上畫出來
77     pygame.display.flip()
78     pygame.draw.rect(window,back_color,(0,0,width,height))
79     rect(head,head_color)
80     rect(food,food_color)
81     for snake in snakes:
82         rect(snake,snake_color)
83 
84 
85 
86 #設定幀頻
87     clock.tick(10)