Rex Dark

Thanks, that all helped a lot. Is there anything other than metadata and TileEntity that can determine how a block is placed?

Thanks. I know they have the same id. The thing I'm worried about is ids for mod blocks changing in config files to resolve block ids being used double. I still want the files to be reliable when that happens. It's supposed to be distributed with other mods for generating structures. If the block ids change to compensate between mods, you might end up with castles made out of MFSUs instead of FancyBrickX, that's kind of what I'm trying to prevent. So that's why I'm looking for a different way to identify the blocks.

I've been trying to get blocks from coordinates in the world. I figured out how to get the id and metadata of a block at the coordinates, but I can't seem to figure out how to get the block itself from that. I'm trying to create something to select a number of blocks in the world and save that to a file to use later as generated structures, but I don't really want to use the block ids for it if I can, since they might change.