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NeoLemmix
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IchoTolot
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[bug][player] Race-y input polling: Can/can't RMB-scroll during framestep-back
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Topic: [bug][player] Race-y input polling: Can/can't RMB-scroll during framestep-back (Read 1596 times)
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Simon
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Posts: 3877
[bug][player] Race-y input polling: Can/can't RMB-scroll during framestep-back
«
on:
December 27, 2018, 03:21:23 PM »
NL 12.04
This seems hard to reproduce, and I speculate that it's a race condition in NL's keyboard/mouse input polling.
Have a machine that endures a framerate drop during continuously held framestep-back. I repro this on my laptop (can't test on desktop today): 2018 laptop, Intel integrated graphics chip, Arch Linux, NL runs in Wine 4.0-rc3.
Map hold-to-scroll to RMB (right mouse button) and framestep-back-by-1-frame to 2 (the number 2 = the key above W).
Play a large level, e.g.,
Minim level-solving contest 1
.
Zoom into the level far enough such that the game allows you to scroll around the map, i.e., do not have all of the map visible at the same time.
Fast-forward to maybe 5 minutes in the level. No need to assign anything.
Press and hold 2 (the number key) to framestep-back continuously. Never let go of the key until you're done reproducing this bug.
Press RMB (right mose button) and hold it for about a second, move the mosue frantically while holding as if you were scrolling with hold-to-scroll. Repeat this step several times.
Expected: Every press-and-hold of RMB in the last step allowed you to scroll via the hold-to-scroll function.
Observed instead: Only some of the press-and-holds allowed you to scroll.
-- Simon
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Nepster
Posts: 1829
Re: [bug][player] Race-y input polling: Can/can't RMB-scroll during framestep-back
«
Reply #1 on:
December 27, 2018, 03:54:59 PM »
Thanks for the bug report, but this feels like a low-priority and high-effort bug to me. So for the moment, this goes on the stack of stuff to do, whenever I have nothing more productive to do and need a challange.
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Lemmings Forums
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[bug][player] Race-y input polling: Can/can't RMB-scroll during framestep-back