[ bzflag-Patches-1193413 ] frame rate limiting (sleep) patch

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Patches item #1193413, was opened at 2005-05-01 17:09
Message generated for change (Comment added) made by brlcad
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Category: BZFlag
Group: None
>Status: Closed
>Resolution: Accepted
Priority: 3
Submitted By: Karsten Behrmann (bearperson)
Assigned to: Sean Morrison (brlcad)
Summary: frame rate limiting (sleep) patch

Initial Comment:
This is a patch to make bzflag sleep intelligently
while playing, so that it keeps running smoothly when
the system is under load.
Notebook users may also get less power consumption.

Note: This works regardless of hardware, setting the
limit to 50fps will get you exactly 50 fps on any
hardware (unless it can't reach 50fps at all of course)

A setting of 0 (the bzdb default for a non-existing
setting it seems) turns limiting off, the only overhead
is one bzdb eval per frame. (so this patch has
essentially no effect until you enable it)

The limit can't be set to less than 30fps as higher
sleep times may influence the lag.

Tested, compiles and works. (applied to latest CVS)

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>Comment By: Sean Morrison (brlcad)
Date: 2005-10-18 04:22

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A rather modified version of this patch was implemented and is now in 
CVS.  Instead of as a frame-rate limit, the menu option is proposed as an 
energy saver option instead.  Also, TimeKeeper is not customized for this 
particular timing purpose (which also had issues that rendered it 
unfavorable).  Thanks!

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Comment By: Karsten Behrmann (bearperson)
Date: 2005-05-01 17:23

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Okay, a bzdb eval of a non-existing variable returns INT_MIN
or something, this should fix it.

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Comment By: Karsten Behrmann (bearperson)
Date: 2005-05-01 17:17

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actually, on further testing, the initial setting does not
seem to be handled correctly... tracking it down.

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