Hard Blocks

Hard Blocks is an attempt to encourage caving over branch mining.

Hard Blocks makes the blocks listed in the hard_blocks.json config file harder to mine.
By default, the only effected blocks are:
stone, granite, diorite, andesite, tuff, deepslate, dripstone_block, and netherrack

These blocks take longer to mine when their neighbors are made of the same material.

A block with no similar neighbors can be broken normally.
A block touching only one other block of the same material takes somewhat longer to break.
A block that has two similar neighbors takes much longer to break.
A block with three similar neighbors will likely make a player decide to break something else,
and blocks with four or more neighbors are practically unbreakable.

This is my first mod and is essentially a tutorial exercise gone haywire.