Solid midtextures in/near sloped sectors could use improvement
From my understanding, standing on a solid midtexture basically acts like standing on the floor of the sector below it. However, as #523 (closed) shows, this can lead to issues if underlying sectors are sloped, but the midtextures are not. Perhaps the No Midtexture Skew flag could be taken into account when handling the solid midtexture collision?
I've also encountered this similar issue:
In this case, the solid midtextures aren't even directly above sloped sectors: each solid midtexture is on the boundary line between a non-sloped sector and a sloped sector. It would be nice if the collision for these lines could favor the non-sloped adjacent sector, somehow...
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I've had that happen before, too, and I'm not a fan of it.
I think that rather than applying the push on the slope's direction, the pushing force's vector should be projected first on the line's direction. This would lead to the force always being applied in the line's direction, which would make definitely much more sense, if you ask me.
If this were done, in your GIF's case, for example, those lines are perpendicular to their adjacent slope's directions, and thus the projection would be 0, making them neutral-behaving, as you'd expect from them to behave.
Edited by Nev3rmentioned in issue #528 (closed)