protected void DrawBlob(T map, BlobMap blobMap, int index, Loc offset, bool encroach)
{
BlobMap.Blob mapBlob = blobMap.Blobs[index];
for (int xx = Math.Max(0, offset.X); xx < Math.Min(map.Width, offset.X + mapBlob.Bounds.Width); xx++)
{
for (int yy = Math.Max(0, offset.Y); yy < Math.Min(map.Height, offset.Y + mapBlob.Bounds.Height); yy++)
{
Loc destLoc = new Loc(xx, yy);
Loc srcLoc = destLoc + mapBlob.Bounds.Start - offset;
if (blobMap.Map[srcLoc.X][srcLoc.Y] == index)
{
// can place anything if encroaching
// otherwise, can place anything except roomterrain
if (encroach || !map.GetTile(destLoc).TileEquivalent(map.RoomTerrain))
{
map.TrySetTile(new Loc(xx, yy), this.Terrain.Copy());
}
}
}
}
GenContextDebug.DebugProgress("Draw Blob");
}
public static BlobMap DetectBlobs(Rect rect, Grid.LocTest isValid)
{
if (isValid == null)
{
throw new ArgumentNullException(nameof(isValid));
}
var blobMap = new BlobMap(rect.Width, rect.Height);
for (int xx = rect.X; xx < rect.End.X; xx++)
{
for (int yy = rect.Y; yy < rect.End.Y; yy++)
{
if (isValid(new Loc(xx, yy)) && blobMap.Map[xx][yy] == -1)
{
var blob = new BlobMap.Blob(new Rect(xx, yy, 1, 1), 0);
// fill the area, keeping track of the total area and blob bounds
Grid.FloodFill(
rect,
(Loc testLoc) => (!isValid(testLoc) || blobMap.Map[testLoc.X][testLoc.Y] != -1),
(Loc testLoc) => true,
(Loc fillLoc) =>
{
blobMap.Map[fillLoc.X][fillLoc.Y] = blobMap.Blobs.Count;
blob.Bounds = Rect.IncludeLoc(blob.Bounds, fillLoc);
blob.Area += 1;
},
new Loc(xx, yy));
blobMap.Blobs.Add(blob);
}
}
}
return(blobMap);
}