Rename functions to use numeracy_ prefix, and update block descriptions
to call the blocks "Numeracy Blocks".
Signed-off-by: James Hogan <james@albanarts.com>
Give them connectedness and split them into groups of 10, so that each
group of 10 has a sort of border on the front. It isn't perfect but it
makes it stand out slightly.
Signed-off-by: James Hogan <james@albanarts.com>
When any kind of block is dug, drop a plain block without any colour, so
the inventory doesn't fill with different coloured blocks.
Also hide ten blocks from the creative inventory as they get placed
automatically when needed.
Signed-off-by: James Hogan <james@albanarts.com>
James Hogan