public void mouseButtonUp()
    {
        for (int x = mc.start_x; x <= mc.end_x; x++)
        {
            for (int y = mc.start_y; y <= mc.end_y; y++)
            {
                Tile t = WorldController.Instance.world.GetTileAt(x, y);
                // This Places the building instantly at mouse
                // bc.PlaceBuilding(paintingType, t);

                if (BuildingController.BuildingTileClear(t) &&
                    t.pendingJob == null)
                {
                    //
                    Job j = new Job(t, (theJob) => { OnBuildingJobComplete(paintingType, theJob.tile);
                                                     t.pendingJob = null; });
                    j.JobObjectType = "RockWallTile";
                    t.world.jobQueue.Enqueue(j);
                    t.pendingJob = j;

                    j.RegisterJobCancelCallBack((theJob) => { theJob.tile.pendingJob = null; });
                    j.RegisterJobCompleteCallBack((theJob) => { theJob.tile.pendingJob = null; });
                }
            }
        }
    }