Terraria.ModLoader.ModTile.GetMapOption C# (CSharp) Method

		public virtual ushort GetMapOption(int i, int j)
		{
			return 0;
		}

 //at end of Terraria.Map.MapHelper.CreateMapTile before returning call
 //  MapLoader.ModMapOption(ref num16, i, j);
 internal static void ModMapOption(ref ushort mapType, int i, int j)
 {
     if (entryToTile.ContainsKey(mapType))
     {
         ModTile tile   = TileLoader.GetTile(entryToTile[mapType]);
         ushort  option = tile.GetMapOption(i, j);
         if (option < 0 || option >= modTileOptions(tile.Type))
         {
             throw new ArgumentOutOfRangeException("Bad map option for tile " + tile.Name + " from mod " + tile.mod.Name);
         }
         mapType += option;
     }
     else if (entryToWall.ContainsKey(mapType))
     {
         ModWall wall   = WallLoader.GetWall(entryToWall[mapType]);
         ushort  option = wall.GetMapOption(i, j);
         if (option < 0 || option >= modWallOptions(wall.Type))
         {
             throw new ArgumentOutOfRangeException("Bad map option for wall " + wall.Name + " from mod " + wall.mod.Name);
         }
         mapType += option;
     }
 }