auto save

snake.py

@@ -12,12 +12,16 @@ background = pygame.image.load('bg.png')
 right = pygame.image.load('right.png')
 food = pygame.image.load('apple.png')
 body = pygame.image.load('body.png')
+left=pygame.image.load("left.png")
+up=pygame.image.load("up.png")
+down=pygame.image.load("down.png")
 x,y=240,120
 position=[(180,90),(180,120),(210,120),(x,y)]
-
+apple_x=360
+apple_y=300
 setheading="right"
-
-
+snake_head=right
+import random
 while True:
     for event in pygame.event.get():
         if event.type == locals.QUIT:
@@ -26,12 +30,16 @@ while True:
         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_UP and setheading!="down":
                 setheading="up"
+                snake_head=up
             if event.key==locals.K_DOWN and setheading!="up":
                 setheading="down"
+                snake_head=down
     if setheading=="right":
         x+=30
     elif setheading=="left":
@@ -41,16 +49,24 @@ while True:
     elif setheading=="down":
         y+=30
     position.append((x,y))
-    position.pop(0)
+    if apple_x==x and apple_y==y:
+        num1=random.randint(1,22)
+        num2=random.randint(1,16)
+        apple_y=num2*30-30
+        apple_x=num1*30-30
+    else:
+        position.pop(0)
+    if x<0 or x>630 or y<0 or y>450:
+        exit()
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇画上去
-    screen.blit(right,position[-1])
+    screen.blit(snake_head,position[-1])
     # 将贪吃蛇的身体画上去
     for i in range(len(position)-1):
         screen.blit(body,position[i])
     # 将果实画上去
-    screen.blit(food, (360, 300))
+    screen.blit(food, (apple_x, apple_y))
     # 刷新画面
     pygame.display.update()
     FPS.tick(3)