示例#1
0
        /// <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;
                }
            }
        }
示例#2
0
        /// <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;
                }
            }
        }