save project

snake.py

@@ -49,8 +49,10 @@ while True:
         y += 30
     position.append((x, y))
     if x==apple_x and y==apple_y:
-        apple_x=random.randint(0,660)
-        apple_y=random.randint(0,480)
+        a1=apple_x=random.randint(1,22)
+        a2=apple_y=random.randint(1,16)
+        apple_x=30*a1-30
+        apple_y=30*a2-30
         
     position.pop(0)
     # 将背景图画上去