public SectorGroup()
{
sectors = new List<Sector>();
type = SectorGroupType.None;
linedefs = new List<Linedef>();
speciallinedefs = new List<Linedef>();
floorheight = ceilingheight = freelinecount = 0;
id = _id;
_id++;
}
public void Update()
{
type = SectorGroupType.None;
floorheight = ceilingheight = freelinecount = 0;
linedefs.Clear();
if (sectors.Count == 0)
return;
// All sectors must have the same floor height to be usable for a floor portal
if (sectors.Count(s => s.FloorHeight == sectors[0].FloorHeight) == sectors.Count)
type |= SectorGroupType.Floor;
// All sectors must have the same ceiling height to be usable for a floor portal
if (sectors.Count(s => s.CeilHeight == sectors[0].CeilHeight) == sectors.Count)
type |= SectorGroupType.Ceiling;
// Cache floor and ceiling heights
if ((type & SectorGroupType.Floor) == SectorGroupType.Floor)
floorheight = sectors[0].FloorHeight;
if ((type & SectorGroupType.Ceiling) == SectorGroupType.Ceiling)
ceilingheight = sectors[0].CeilHeight;
// Get free lines (line without action) and update the anchor
bbanchor = sectors[0].Sidedefs.First().Line.Start.Position;
foreach (Sector s in sectors)
{
foreach (Sidedef sd in s.Sidedefs)
{
// Free lines
if (sd.Line.Action == 0 && sd.Line.Tag == 0)
freelinecount++;
// Special linedefs
if (sd.Line.Action >= 358 && sd.Line.Action <= 361)
speciallinedefs.Add(sd.Line);
// Anchor
if (sd.Line.Start.Position.x < bbanchor.x) bbanchor.x = sd.Line.Start.Position.x;
if (sd.Line.End.Position.x < bbanchor.x) bbanchor.x = sd.Line.End.Position.x;
if (sd.Line.Start.Position.y > bbanchor.y) bbanchor.y = sd.Line.Start.Position.y;
if (sd.Line.End.Position.y > bbanchor.y) bbanchor.y = sd.Line.End.Position.y;
}
}
// Create lines from the geometry outline
lines = new List<Line2D>();
List<Line2D> tmplines = new List<Line2D>();
foreach (Sector s in sectors)
{
foreach (Sidedef sd in s.Sidedefs)
{
if (!(sectors.Contains(sd.Sector) && (sd.Other != null && sectors.Contains(sd.Other.Sector))) || sd.Other == null)
if(!linedefs.Contains(sd.Line))
linedefs.Add(sd.Line);
}
}
// Create lines from linedefs, with a normalized angle between 0° and 180° (in radians)
foreach (Linedef ld in linedefs)
{
if (ld.Angle <= Math.PI)
tmplines.Add(new Line2D(ld.Start.Position, ld.End.Position));
else
tmplines.Add(new Line2D(ld.End.Position, ld.Start.Position));
}
// Merge lines into bigger lines if possible
lines.Add(tmplines[0]);
tmplines.RemoveAt(0);
while (tmplines.Count > 0)
{
// Current line
Line2D cline = lines[lines.Count-1];
// Get all lines with the same angle as the current line and the start position is the end position of the current line
List<Line2D> possiblelines = tmplines.Where(l => l.GetAngle() == cline.GetAngle() && l.v1 == cline.v2).ToList();
if (possiblelines.Count > 0)
{
lines[lines.Count - 1] = new Line2D(cline.v1, possiblelines[0].v2);
tmplines.Remove(possiblelines[0]);
}
else
{
// Get all lines with the same angle as the current line and the end position is the start position of the current line
possiblelines = tmplines.Where(l => l.GetAngle() == cline.GetAngle() && l.v2 == cline.v1).ToList();
if (possiblelines.Count > 0)
{
lines[lines.Count - 1] = new Line2D(possiblelines[0].v1, cline.v2);
tmplines.Remove(possiblelines[0]);
}
else
{
lines.Add(tmplines[0]);
tmplines.Remove(tmplines[0]);
}
}
}
}
