Comment 1 for bug 1418305

kapputnik made an attempt to introduce river graphics into the map editor (see forum post https://wl.widelands.org/forum/post/12378/).

His effort identified the obstacles currently faced in
1) creating the graphics,
2) positioning them on a map and
3) adapting them to terrain elevations on a map.

Ideally, creating and placing rivers by map makers should be as easy as "drawing" them with a tool like terrain.

Perhaps if rivers could be plotted in the Editor like roads in the game this could be achieved.