Sleep() and tick_lag

BYOND Forums

Announcements · BYOND Help · Bug Reports · Feature Requests · Beta Testers · Beta Bugs · Developer Help · Design Philosophy · Demos & Libraries · Tutorials & Snippets · Art & Sound · Classified Ads · Game Updates · Contests & Events · Linux Talk · On Topic · Off Topic

ID:2281557 Aug 10 2017, 6:04 am (See the best response by Lummox JR.)
Victorqr	Do sleep commands round up to tick lag?? meaning that the maximum precision we can have is 100ms??

Aug 10 2017, 11:26 am Best response
Lummox JR	They round, yes. If you want more precision you need a faster FPS.

Aug 10 2017, 11:50 am
Victorqr	Thanks I tested it also and I had different times when changing fps. Its just that in the reference it says that sleep works with 1/10 of seconds and not ticks. also I noticed that sleeps also takes 0.1 as argument so I can go as low as 10ms right??

Aug 10 2017, 11:55 am

Lummox JR

The value in sleep() is always in terms of standard ticks, for legacy reasons, but internally it's always changed to an integer number of server ticks--which happen at whatever rate is specified by tick_lag or fps.

Sleeping a fractional number of server ticks is of course not possible, as there's no such concept.

If your world runs at 100 FPS--which is really more of a theoretical concept than a practical one--then yes, 10 ms would be fine. In practice, running the server at that speed is problematic.

Aug 10 2017, 12:07 pm
Victorqr	Thanks for the clarification, yeah so 0.1 should only work with 100fps. I just noticed that round up in my custom glide proc where sleep(lag/32) lag/32==0.04 in many cases was rounded up and certain units got really slow.