public static bool?IsMirrorTileInvalid(int tileX, int tileY) { if (Main.netMode == 1) { if (!TileChunkHelpers.IsTileSyncedForCurrentClient(tileX, tileY)) { if (TileHelpers.IsEqual(Main.tile[tileX, tileY], new Tile())) { return(null); } } } return(!MountedMagicMirrorsMod.Instance.MMMTilePattern.Check(tileX, tileY)); }