auto save

snake.py

 import pygame
+import random
 from pygame import locals
 
 # 初始化pygame，为使用pygame做准备
 pygame.init()
-
+#加载图片
+background=pygame.image.load("bg.png")
+apple=pygame.image.load("apple.png")
+body=pygame.image.load("body.png")
+right=pygame.image.load("right.png")
+left=pygame.image.load("left.png")
+down=pygame.image.load("down.png")
+up=pygame.image.load("up.png")
+times=pygame.time.Clock()
+x=180
+y=120
+setheading="right"
+snake_head=right
+apple_x=240
+apple_y=330
+position=[(90,90),(120,120),(150,120),(x,y)]
 # 创建一个窗口
 screen=pygame.display.set_mode((600,800))
 while True:
     for event in pygame.event.get():
         if event.type== locals.QUIT:
             exit()
+        if event.type==locals.KEYDOWN:
+            if event.key==locals.K_RIGHT and setheading!="left":
+                setheading="right"
+                snake_head=right
+            if event.key==locals.K_LEFT and setheading!="right":
+                setheading="left"
+                snake_head=left
+            if event.key==locals.K_DOWN and setheading!="up":
+                setheading="down"
+                snake_head=down
+            if event.key==locals.K_UP and setheading!="down":
+                setheading="up"
+                snake_head=up
+    
+    if setheading=="right":
+        x+=30
+    elif setheading=="left":
+        x-=30
+    elif setheading=="down":
+        y+=30
+    else:
+        y-=30
+    position.append((x,y))
+    position.pop(0)
+    if x==apple_x and y==apple_y:
+        apple_x=random.randint(0,660)
+        apple_y=random.randint(0,480)
+
+    screen.blit(background,(0,0))
+    for i in range(len(position)):
+        screen.blit(body,position[i])
+    screen.blit(apple,(apple_x,apple_y))
+    screen.blit(snake_head,position[-1])
+
+    times.tick(3)
+    pygame.display.update()
+