Ignore all objects for fall tracing with shove to avoid considering checkins as obstacles. many objects will get knocked by the kick anyway, so end result should be pretty good. Oh, and ditch the sniper rifle doubling.

Fixed a bug where, after finishing a campaign mission, the user needed to reselect the team in the frontend in order to see the next mission.

Double sniper rifle damage (AI seems unaware of second shot, when playing). Spread out flakes along X when looping and add a little Y variation. This avoids noticeable patterns. Especially on the rarer close layer or dense flakes like rain (for Y)