save project

snake.py

@@ -54,8 +54,11 @@ 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)
+        num1 = random.randint(1,22)
+        num2=random.randint(1,16)
+        apple_x=num1*30-30
+        apple_y=num2*30-30
+    else:
         position.pop(0)
     # 将背景图画上去
     screen.blit(background, (0, 0))