As far as I know, there is no way to do such a thing*. The BYOND internal "clock" runs in ticks. I can't come up with a good analogy for this except for clocking crystals used in processors and electronics... Think of it this way, BYOND starts a loop and every tick it performs all of the code that is given to it to perform that tick. Next tick it does the same thing. Sleep and spawn commands just tell the loop when to perform certain code. Kind of. Thats not a perfect explanation, and I could be wrong.. I don't think I am, though. Perhaps Dantom could verify.

*You could simulate it by performing commands that slow down BYOND, like a really big loop. However, that does require you to be sucking down most of BYOND's resources, and it will depend on the speed of the machine it runs on, along what else the machine is doing, as to how much of a loop to do. In short, that would be a really crappy method.

-AbyssDragon

You could probably approximate the effect you want by pre-calculating a list of delays for each speed and cycling through it as needed. To players, the overall effect will seem fairly smooth.

6 delay (fastest) = (1, 1, 1, 1, 1, 1)

10 delay = (2, 2, 1, 2, 2, 1)

12 delay = (2, 2, 2, 2, 2, 2)

21 delay = (3, 4, 3, 4, 3, 4)

24 delay = (4, 4, 4, 4, 4, 4)

29 delay = (5, 5, 5, 5, 5, 4)