Hello. I would like to have a block that has a variable hardness and tool requirement based on an item contained within the block's inventory.

While I have been able to adjust the block's hardness in this way, I have not been able to figure out how to change the tool requirements.

 

So far, I have:

• A block with a tile entity.
• The tile entity can contain an item that increases the block's hardness
• The item can be enchanted to further increase the block's hardness

 

What I would like to have:

• As the block's hardness increases (as a result of the item and enchantment), so does the tool level needed to break it (none -> wood -> ... -> diamond)

 

Can anybody help with this?

Thanks. That seems to have put me on the right track.