MineClone2/mods/ITEMS/mcl_raw_ores/init.lua

local function register_raw_ore(description, n)
    local ore = description:lower()
    local n = n or ""
    local raw_ingot = "mcl_raw_ores:raw_"..ore
    local texture = "mcl_raw_ores_raw_"..ore

    minetest.register_craftitem(raw_ingot, {
		description = ("Raw "..description),
		_doc_items_longdesc = ("Raw "..ore..". Mine a"..n.." "..ore.." ore to get it."),
		inventory_image = texture..".png",
		groups = { craftitem = 1 },
    })

    minetest.register_node(raw_ingot.."_block", {
        description = ("Block of Raw "..description),
        _doc_items_longdesc = ("A block of raw "..ore.." is mostly a decorative block but also useful as a compact storage of raw "..ore.."."),
        tiles = { texture.."_block.png" },
        is_ground_content = false,
        groups = { pickaxey = 2, building_block = 1 },
        sounds = mcl_sounds.node_sound_metal_defaults(),
        _mcl_blast_resistance = 6,
        _mcl_hardness = 5,
    })

    minetest.register_craft({
        output = raw_ingot.."_block",
        recipe = {
            { raw_ingot, raw_ingot, raw_ingot },
            { raw_ingot, raw_ingot, raw_ingot },
            { raw_ingot, raw_ingot, raw_ingot },
        },
    })

    minetest.register_craft({
        type = "cooking",
        output = "mcl_core:"..ore.."_ingot",
        recipe = raw_ingot,
        cooktime = 10,
    })

    minetest.register_craft({
        output = raw_ingot.." 9",
        recipe = {
            { raw_ingot.."_block" },
        },
    })
end

register_raw_ore("Iron", "n")
register_raw_ore("Gold")