minetest.register_craftitem("default:book", {
description = "Book",
inventory_image = "default_book.png",
+ groups = {book=1},
})
minetest.register_craftitem("default:coal_lump", {
description = "Coal Lump",
inventory_image = "default_coal_lump.png",
+ groups = {coal = 1}
})
minetest.register_craftitem("default:iron_lump", {