public void TileZMod(MultiTile tile, int modz) { AddToUndoList("Modify Z"); tile.Z += modz; if (tile.Z > 127) tile.Z = 127; if (tile.Z < -128) tile.Z = -128; CalcSolver(tile.X, tile.Y); Tiles.Sort(); Modified = true; RecalcMinMax(tile); }