save project

snake.py

@@ -62,9 +62,12 @@ while True:
         num2 = random.randint(1,16)
         num2 = random.randint(1,16)
         apple_x = 30*num1-30
         apple_x = 30*num1-30
         apple_y = 30*num2-30
         apple_y = 30*num2-30
-        score +=1
+        score += 1
     else:
     else:
         position.pop(0)
         position.pop(0)
+    #贪吃蛇是否撞墙
+    if x <0 or x > 630 or y < 0 or y > 450:
+        exit()
     # 将背景图画上去
     # 将背景图画上去
     screen.blit(background, (0, 0))
     screen.blit(background, (0, 0))
     # 将贪吃蛇的头画上去
     # 将贪吃蛇的头画上去