feat: only stream portals within 12 meters of the player

MosswartMassacre/PluginCore.cs

@@ -804,6 +804,12 @@ namespace MosswartMassacre
                 var decalCoords = portal.Coordinates();
                 if (decalCoords == null) return;
 
+                // Only report portals within 12 meters of the player
+                var portalPos = new Coordinates(decalCoords.EastWest, decalCoords.NorthSouth);
+                var playerPos = Coordinates.Me;
+                double dist = playerPos.DistanceToFlat(portalPos);
+                if (dist > 12.0) return;
+
                 const string fmt = "F7";
                 string ns = decalCoords.NorthSouth.ToString(fmt, CultureInfo.InvariantCulture);
                 string ew = decalCoords.EastWest.ToString(fmt, CultureInfo.InvariantCulture);