//Should this change the tile being displayed to a river?
//Yes for clarity in other places
public void AddSegment(TileDisplay newSeg)
{
Segments.Add(newSeg);
newSeg.setRiver();
if (newSeg.GetHeight() < lowestHeight)
{
lowestHeight = newSeg.GetHeight();
foreach (TileDisplay t in Segments)
{
t.setHeight(lowestHeight);
}
}
}