save project

snake.py

@@ -56,6 +56,9 @@ while True:
         y -= 30
     else:
         y += 30
+        
+    if x<0 or x>630 or y<0 or y>450:
+        exit()    
     position.append((x, y))
     
     # 将背景图画上去
@@ -65,6 +68,7 @@ while True:
     if pg_x == x and pg_y == y :
         pg_x = random.randint(0,21)*30
         pg_y = random.randint(0,15)*30
+        fenshu = fenshu + 10
     else:
         position.pop(0)
     # 将贪吃蛇的身体画上去