"Problem With Clock" Stutters Runtime / Possible Fixed Time Bug #33088

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solarlune · 2012-11-05T06:33:41+01:00

solarlune commented

2012-11-05 06:33:41 +01:00

%%%Hello. So, while working on a launcher for BGE games, I found that an error named "problem with clock" arises while running a BGE runtime. It doesn't appear to be because of anything happening in the game, but rather randomly, even with a default blend file. With the framerate being shown on-screen, the 'problem with the clock' appears to make the framerate jump up, from a nominal 60 FPS to higher values, like 62 or 67 FPS. These stutters cause inconsistencies so that a rotating cube appears to jump in its rotation speed, for example.

As a side-note, I couldn't get the fixedtime command line argument to work - it appears to be broken. Perhaps it's tied to this timing issue.

Being that the example can only be seen in a runtime, I've uploaded the example, launcher and all, to MediaFire.

http://www.mediafire.com/download.php?hyws2oark8bi327

You can unzip it with 7-Zip. If you just start the launcher and thereby run the runtime with the console active and showing the FPS onscreen in the viewport, you'll notice the error appear and the runtime stutter. Note that the launcher and game are both made in Blender 2.64a, Windows 32-bit. I observed the issue on Windows 7 64-bit.%%%

%%%Hello. So, while working on a launcher for BGE games, I found that an error named "problem with clock" arises while running a BGE runtime. It doesn't appear to be because of anything happening in the game, but rather randomly, even with a default blend file. With the framerate being shown on-screen, the 'problem with the clock' appears to make the framerate jump up, from a nominal 60 FPS to higher values, like 62 or 67 FPS. These stutters cause inconsistencies so that a rotating cube appears to jump in its rotation speed, for example. As a side-note, I couldn't get the fixedtime command line argument to work - it appears to be broken. Perhaps it's tied to this timing issue. Being that the example can only be seen in a runtime, I've uploaded the example, launcher and all, to MediaFire. http://www.mediafire.com/download.php?hyws2oark8bi327 You can unzip it with 7-Zip. If you just start the launcher and thereby run the runtime with the console active and showing the FPS onscreen in the viewport, you'll notice the error appear and the runtime stutter. Note that the launcher and game are both made in Blender 2.64a, Windows 32-bit. I observed the issue on Windows 7 64-bit.%%%

solarlune commented

2012-11-05 06:33:41 +01:00

Changed status to: 'Open'

Thomas Szepe commented

2012-11-09 15:05:07 +01:00

%%%I posted clock bug on this bug report. [#32708] standalone blenderplayer memory leak and colck fault.
%%%

%%%I posted clock bug on this bug report. [#32708] standalone blenderplayer memory leak and colck fault. %%%

solarlune commented

2012-11-09 16:06:08 +01:00

%%%Indeed, that was my mistake. I didn't check the bug reports to see if it had been reported recently.%%%

solarlune commented

2012-11-17 17:48:47 +01:00

%%%I just wanted to add that the clock problem seems to be present on a blank blend file, but the stuttering doesn't appear to be an issue when I tried a more complex scene, oddly (Soldier Of)...?%%%

Mitchell Stokes commented

2012-11-24 09:14:15 +01:00

%%%I've implemented a potential fix for the "Problem With Clock" issue in r52531. As for the fixedtime issue, the usage docs say "fixedtime" but the application is looking for "fixed_framerate", which is horribly misleading about what the switch actually does. I'm thinking about switching it to "fixedtime," but I don't want to break anything that was relying on the old (undocumented) flag.%%%

Mitchell Stokes commented

2012-11-25 08:43:53 +01:00

%%%As of r52539 the player should now work for "fixedtime." I'm not marking this as "fixed."%%%

Mitchell Stokes commented

2012-11-25 08:43:55 +01:00

Changed status from 'Open' to: 'Resolved'

Mitchell Stokes closed this issue

2012-11-25 08:43:55 +01:00

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"Problem With Clock" Stutters Runtime / Possible Fixed Time Bug #33088