String checkTileMap() {
return this.getNumberOfTiles() == 7 ? null : "requires exactly 7 tiles";
}
Icon getTileImpl(IBlockAccess blockAccess, Block block, Icon origIcon, int i, int j, int k, int face) {
Icon icon = super.getTileImpl(blockAccess, block, origIcon, i, j, k, face);
if (icon != this.icons[3]) {
return icon;
} else {
int[][] offsets = NEIGHBOR_OFFSET[face];