private void AddLiftedFootprint(SmartEntity building)
 {
     if (!this.liftedFootprints.ContainsKey(building))
     {
         SizeComponent sizeComp  = building.SizeComp;
         Footprint     footprint = new Footprint(this.LIFTED_FOOTPRINT_NAME, 3f);
         footprint.AddTiles(0f, 0f, sizeComp.Width, sizeComp.Depth, building.WallComp != null);
         footprint.GenerateMesh(true, true);
         this.liftedFootprints.Add(building, footprint);
     }
 }