`abs`精度可能有问题,建议手写
by konjacq @ 2020-07-21 10:15:10
`if (((bx - ax) + (by - ay)) > 1)`没有取绝对值
by konjacq @ 2020-07-21 10:15:50
@[konjacq](/user/54189) A了，感谢大佬，忘加绝对值辽
by 孙cy @ 2020-07-21 10:59:47