Left/right scrolling with touchpad in main game mode crashes UH

[frsfnrrg]

On Arch Linux, having just installed unknown-horizons-git.

When I left or right scroll using the touchpad (xinput test # button presses 6 or 7),
if I am in the main menu or the New-Game Single Player screen, nothing happens
as soon as a game loads, L/R scrolling immediately exits the program with error

Traceback (most recent call last):
RuntimeError: Caught a director exception

Unknown Horizons exited uncleanly via SIGINT
AL lib: (EE) alc_cleanup: 1 device not closed

If I disable touchpad L/R scrolling, via xinput set-button-map ## 1 2 3 4 5 0 0
where ## corresponds to the touchpad, the crash does not occur.

[LinuxDonald]

Is this the only output from the crash?

[jmdejong]

This looks like the same problem as #2828 and fifengine/fifengine#1062, where horizontal scrolling would also crash the game
This would mean that it is fixed in #2829.

Short summary: UH was implementing a FIFE mouseeventlistener interface, but did not implement the methods for horizontal scrolling. Adding implementations for those fixed it.

I think we can close this.