0003784: Mouse view desyncs when using SR50

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Date Submitted

Last Update

0003784

Zandronum

[All Projects] Bug

public

2020-05-04 03:56

2020-05-28 23:44

Reporter

Soul

Assigned To

Priority

normal

Severity

major

Reproducibility

always

Status

new

Resolution

open

Platform

Microsoft Windows 10

OS Version

Product Version

3.1-beta

Target Version

Fixed in Version

Summary

0003784: Mouse view desyncs when using SR50

Description

With 0003314 fixed, a new issue was brought to light: when using SR50 (the one-key implementation as seen in Steps To Reproduce), your view gets slightly desync'd and snaps back to an angle roughly 1 tic before you pressed the SR50 key. This only happens when smooth_mouse 0. This problem was also present in older versions of GZDoom, but it has since been fixed there. Unfortunately, I wouldn't know where to find it, but I'd assume all that must be done to resolve this is to port over their mouse fix.

Steps To Reproduce

- Add the one-key SR50 alias seen here:'https://zandronum.com/forum/viewtopic.php?t=469 [^]'
- Press the SR50 key while doing hard turns;
- Notice your view "snapping" back at the immediate previous angle you were looking at before pressing the SR50 key.

Attached Files

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Notes
(0021307) Soul (reporter) 2020-05-04 04:14	After further testing, it's been discovered this only happens with uncapped FPS, so there's a chance the problem might not be associated with the mouse code, but with the renderer instead. With capped FPS, there are no such visual problems.

(0021327) Ru5tK1ng (updater) 2020-05-07 19:44	I can't seem to replicate this bug with 3.1 in both renderers. Maybe someone can post a gif or video.

(0021346) Soul (reporter) 2020-05-28 23:44	I've recorded a video illustrating this bug for a minute. I press the SR50 bind as I turn during my strafe-runs here. Notice my view jerking ever-so-slightly in the opposite direction every time I activate SR50. It's perhaps easiest to see in the middle of the video where I'm mashing the bind. I recommend going frame-by-frame to get a good look at what's going on. 'https://www.dropbox.com/s/s04ia14z8xfouz6/2020-05-28%2019-53-58.mkv?dl=0 [^]'

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Issue History
Date Modified	Username	Field	Change
2020-05-04 03:56	Soul	New Issue
2020-05-04 04:14	Soul	Note Added: 0021307
2020-05-07 19:44	Ru5tK1ng	Note Added: 0021327
2020-05-28 23:44	Soul	Note Added: 0021346

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