save project

snake.py

@@ -47,6 +47,7 @@ while True:
                 setheading = 'down'
                 snake_head = down
 
+
     # 设置贪吃蛇的头部坐标
     if setheading == "right":
         x += 30
@@ -63,8 +64,12 @@ while True:
         num2 = random.randint(1,16)
         apple_x = 30*num1-30
         apple_y = 30*num2-30
+        score += 10
     else:
         position.pop(0)
+
+    if x<0 or x>630 or y>450:
+        exit()
     # 将背景图画上去
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去