save project

snake.py

@@ -53,13 +53,11 @@ while True:
     else:
         y += 30
     position.append((x, y))
+    position.pop(0)
     if x==apple_x and y== apple_y:
-        num1 = random.randint(1,22)
-        num2 = random.randint(1,16)
-        apple_x = 30*num1-30
-        apple_y = 30*num2-30
-    else:
-        position.pop(0)
+        apple_x = random.randint(0,660)
+        apple_y = random.randint(0,480)
+
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去