/// <summary>
/// Determines what sector a thing is in, given a blockmap
/// </summary>
/// <param name="blockmap">The blockmap to use</param>
public void DetermineSector(BlockMap <BlockEntry> blockmap)
{
BlockEntry be = blockmap.GetBlockAt(pos);
List <Sector> sectors = new List <Sector>(1);
foreach (Sector s in be.Sectors)
{
if (s.Intersect(pos))
{
sectors.Add(s);
}
}
if (sectors.Count == 0)
{
sector = null;
}
else if (sectors.Count == 1)
{
sector = sectors[0];
}
else
{
// Having multiple intersections indicates that there are self-referencing sectors in this spot.
// In this case we have to check which side of the nearest linedef pos is on, and then use that sector
HashSet <Linedef> linedefs = new HashSet <Linedef>(sectors[0].Sidedefs.Count * sectors.Count);
foreach (Sector s in sectors)
{
foreach (Sidedef sd in s.Sidedefs)
{
linedefs.Add(sd.Line);
}
}
Linedef nearest = MapSet.NearestLinedef(linedefs, pos);
double d = nearest.SideOfLine(pos);
if (d <= 0.0 && nearest.Front != null)
{
sector = nearest.Front.Sector;
}
else if (nearest.Back != null)
{
sector = nearest.Back.Sector;
}
else
{
sector = null;
}
}
}
/// <summary>
/// Determines what sector a thing is in, given a blockmap
/// </summary>
/// <param name="blockmap">The blockmap to use</param>
public void DetermineSector(BlockMap <BlockEntry> blockmap)
{
BlockEntry be = blockmap.GetBlockAt(pos);
foreach (Sector s in be.Sectors)
{
if (s.Intersect(pos))
{
sector = s;
return;
}
}
}