This bug report was migrated from our old Bugzilla tracker.

Reported in version: 2.0.9
Reported for operating system, platform: Android (All), x86_64

Comments on the original bug report:

On 2019-02-16 13:51:12 +0000, Ellie wrote:

Single finger events "jump around" to other fingers during multitouch: as soon as a second finger is pressed, the single finger mouse emulation (SDL_TOUCH_MOUSEID) will JUMP to that new finger, and if it's released, jump back.

Can this possibly be removed? This behavior leads for me to insane jerkiness and jumps related to scrolling and just about anything else and I see no benefit, so this seems, if not a bug, then like a poor choice to me.

Expected behavior would be that the "virtual single finger mouse" reported via SDL_TOUCH_MOUSEID always sticks with the finger that was pressed down first unless that one is released, instead of needlessly jumping to other fingers once 2+ fingers are used

On 2019-03-17 02:21:26 +0000, Sam Lantinga wrote:

Yes, that makes sense. Can you provide a tested patch?

Thanks!

On 2019-04-04 15:20:41 +0000, Ellie wrote:

This was fixed by Sylvian's awesome revamp of SDL_TOUCH_MOUSEID code for https://bugzilla.libsdl.org/show_bug.cgi?id=4572 !