private void RunRiver(TWorld world, CellAddress springLocation)
{
var rnd = new Random(world.Seed + "rivers".GetHashCode());
var current = springLocation;
var river = new River();
var previousSegment = (RiverSegment)null;
while (!IsOcean(current.X, current.Y, world))
{
var currentCell = world.GetCell(current.X, current.Y);
if (currentCell.RiverSegmentHere != null)
{
// Now a tributary
if (river.Segments.Count >= RIVER_MIN_LENGTH)
{
currentCell.RiverSegmentHere.PreviousSegments.Add(previousSegment);
previousSegment.NextSegment = currentCell.RiverSegmentHere;
river.TributaryOf = currentCell.RiverSegmentHere.ParentRiver;
//world.AddRiver(river);
AddFlow(currentCell.RiverSegmentHere, 1);
return;
}
//Too short, abort
return;
}
previousSegment = river.AddSegment(current, previousSegment);
current = PickNextLocation(world, current, river, rnd);
if (current == null)
{
//Dead end, abort
return;
}
}
//Add the current location to the end of the river.
river.AddSegment(current, previousSegment);
if (river.Segments.Count < RIVER_MIN_LENGTH)
{
//Too short, abort
return;
}
//Add river to world
//world.AddRiver(river);
}
