it there an event that will fire when blocks are placed or, even better, when tile entities are placed?

 

Thanks in advance,

Curin

I need it when it is placed in the world at all. I'm trying to keep track of Machines within an area around a block. The initial finding will just be a check for the entire area, but that would be expensive to check every time the block functions.

Yes that is actually what I was looking for. Thanks so much for the help diesieben