问题描述
我正在为一个游戏翻译.用户将其移动输入到解释器，然后程序执行该移动.
I'm writing an interpreter for a game. User enters its move to the interpreter and program executes that move.
现在，我想为每个决定实施一个时限.玩家的思考时间不应该超过30秒，然后按Enter键.
Now I want to implement a time limit for each decision. Player shouldn't be able to think more than 30 seconds to write a move and press enter.
call_with_time_limit似乎很相关，但它不能正常工作:
call_with_time_limit seemed relevant but it doesnt work properly as such:
call_with_time_limit(30，read(X))，Problem，write(Problem).
call_with_time_limit( 30, read(X) ), Problem, write(Problem).
在这种情况下，它等待输入，输入后，计时器将随后启动.但是我希望计时器从头开始.
In this case, it waits for input, and when input is entered, timer starts afterwards. But I want the timer to start at the beginning.
我该怎么办?
推荐答案
如果您对与I/O相关的超时感兴趣，请考虑 wait_for_input/3 或set_stream/2.您发现的内置call_with_time_limit/2并非简单可靠的界面.
If you are interested in I/O related timeouts please consider wait_for_input/3 or set_stream/2. The built-in you found, call_with_time_limit/2 is not a simple and reliable interface.
我只是看到您使用read/1进行输入.请阅读上面的文档，了解如何避免在read/1中阻塞.我不清楚您为什么需要这样做，但是用户可以只输入，从而避免了初始超时. read/1现在会读到'\n'，但随后将等待进一步的输入-没有超时，而用户则大肆浏览Wikipedia寻求答案...甚至可能会问关于SO的问题...
I just see that you use read/1 for input. Please read in above documentation how to avoid blocking in read/1. It is not clear to me why you need this, but a user might simply enter , thereby circumventing the initial timeout. read/1 would now read that '\n' but then would wait for further input - without a timeout, while the user lavishly skims Wikipedia for the answer... might even ask the question on SO...
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