save project

snake.py

@@ -54,12 +54,16 @@ while True:
     else:
         y += 30
     if x==apple_x and y==apple_y:
-        apple_x=random.randint(0,660)
-        apple_y=random.randint(0,480)
+        apple_b=random.randint(1,22)
+        apple_a=random.randint(1,16)
+        apple_x=30*apple_b-30
+        apple_y=30*apple_a-30
+    else:
+        position.pop(0)
 
 
     position.append((x,y))
-    position.pop(0)
+    #position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去