local minetest, nodecore
    = minetest, nodecore

local MOD_NAME = minetest.get_current_modname()

-- Properties that every non-full block we're adding should share.
local SHARED_NONFULL_PROPERTIES = {
    drawtype   = "nodebox",
    paramtype  = "light",
    paramtype2 = "facedir",
    sunlight_propagates = true,
}

local function make_node_box(...) return { type = "fixed", fixed = { ... } } end
local STAIR_NODE_BOX = make_node_box({ -0.5, -0.5, -0.5, 0.5, 0.0, 0.5 },
                                     { -0.5,  0.0,  0.0, 0.5, 0.5, 0.5 })
local SLAB_NODE_BOX  = make_node_box({ -0.5, -0.5, -0.5, 0.5, 0.0, 0.5 })
local STEP_NODE_BOX  = make_node_box({ -0.5, -0.5,  0.0, 0.5, 0.0, 0.5 })

local function do_the_cursed_thing(base_full_name, base_def)
    base_def = base_def or minetest.registered_nodes[base_full_name]

    local base_mod_name  = base_full_name:gsub(":.*", "")
    local base_node_name = base_full_name:gsub(".*:", "")

    local function register_node_variant(variant, node_box)
        minetest.register_node(
            MOD_NAME .. ":" .. base_mod_name .. "__" .. base_node_name .. "_" .. variant:lower(),
            nodecore.underride({
                description = base_def.description .. " " .. variant,
                groups = { [MOD_NAME .. ":" .. variant:lower()] = 1 },

                tiles = { { name = base_def.tiles[1], align_style = "world" } },
                node_box = node_box, selection_box = node_box,

                drop = base_def.drop or base_full_name,
                silktouch_as = base_def.silktouch_as or base_full_name,
            }, SHARED_NONFULL_PROPERTIES, base_def))
    end

    register_node_variant("Stair", STAIR_NODE_BOX)
    register_node_variant("Slab" , SLAB_NODE_BOX)
    register_node_variant("Step" , STEP_NODE_BOX)
end

do_the_cursed_thing("nc_woodwork:plank")