Hey all, I noticed that on the server hivemc.eu they have invisible blocks. Since I had no client side mod I was a little confused since I know that bukkit doesn't support creating new blocks. So I came to the conclusion that it must have something to do with a server texture pack. If anyone knows how to do this I would love to know. I would only like to have the invisible blocks on one part of my server if possible. If you know anything I would love to know. - Iroh
If you mean blocks that cannot be seen but have a collision box then there is a special door block you can use for that, SethBling made a video on it a while back.
There are invisible blocks in minecraft. I think they are piston extensions that you can only get via creative.
Thanks this worked. Useing //set 64depends on which way the door faces) I was able to create invisible door blocks. Piston extensions are visible.