auto save

snake.py

@@ -59,8 +59,12 @@ while True:
     position.append((x,y))
 
     if x == apple_x and y == apple_y:
-        apple_x = random.randint(0,660)
-        apple_y = random.randint(0,480)
+        num1 = random.randint(1,22)
+        num2 = random.randint(1,16)
+        apple_x = 30*num1-30
+        apple_y = 30*num2-30
+    else:
+        position.pop(0)
 
     
     position.pop(0)
@@ -73,7 +77,7 @@ while True:
         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()
     FPSCLOCK.tick(3)
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