如何在不导入时间的情况下在 Python 中制作倒数计时器？

Question

I'm creating a countdown timer for a game in Python. My problem is I could only find code that uses time.sleep() , which pauses the entire code. Is there a way to make a countdown timer, for example, from 60 seconds. Is it possible to use millis()?

Answer 1

time.sleep() makes your program wait some time and not do anything. The way it's usually done is to use something like time.time() to get the current time and as your title says: 'count down' from there using your loop and getting the difference between the start value and the current value of time.time() . If it's greater than your desired value, then just simply break out of the loop.

Answer 2

Assuming you have a game loop that runs every tick of your program, you could have a Countdown class whose countdownElapsed function gets called every tick of your game loop and that checks when your countdown is at zero

// Pseudo-code
func countdownElapsed(countdown):
    return (countdown.lastTime - time.currentTime()) < 0

You could also create a Scheduler class that stores a bunch of function pointers, their arguments and the time you want to call said function pointers inside a vector of some sort and does the check above for every function inside the vector every tick.

Finally, you can also just have a separate thread where you sleep and time-sensitive tasks.