carpets/api.lua

local modname = minetest.get_current_modname()
local modpath = minetest.get_modpath(modname)

local config = Settings(modpath .. "/settings.txt")

local carpet_proto = {
	drawtype = "nodebox",
	paramtype = "light",
	paramtype2 = "facedir",
	node_box = {
		type = "fixed",
		fixed = {-0.5, -0.5, -0.5, 0.5, -0.45, 0.5}
	}
}

if config:get_bool("WoolFeeling") then
	carpet_proto.sounds = default.node_sound_defaults()
	carpet_proto.groups = {snappy = 2, choppy = 2, oddly_breakable_by_hand = 3, flammable = 3}
end

function carpets.register(recipe, def)
	local node = {}

	if def then
		for k, v in pairs(def) do
			node[k] = v
		end
	end

	for k, v in pairs(carpet_proto) do
		node[k] = v
	end

	local recipe_def = minetest.registered_nodes[recipe]

	node.description = node.description or recipe_def.description .. " Carpet"
	node.tiles = node.tiles or recipe_def.tiles

	if node.tiles[6] then
		-- prefer "front" site for carpet
		node.tiles = {node.tiles[6]}
	end

	if not node.sounds then
		--copy by reference because no change expected
		node.sounds = recipe_def.sounds
	end

	if not node.groups then
		node.groups = {}
		-- copy by value because of some changes
		if recipe_def.groups then
			for k, v in pairs(recipe_def.groups) do
				node.groups[k] = v
			end
		end
		node.groups.leafdecay = nil
	end

	if config:get_bool("FallingCarpet") and node.groups.falling_node == nil then
		node.groups.falling_node = 1
	elseif node.groups.falling_node == 1 then
		node.groups.falling_node = 0
	end

	local name = "carpet:" .. (node.name or recipe:gsub(":", "_"))
	node.name = nil

	if config:get_bool("NoFlyCarpet") then
		local previous_on_place = node.on_place or minetest.item_place
		node.on_place = function(itemstack, placer, pointed_thing, ...)
			if not pointed_thing then
				return
			end

			local above = pointed_thing.above
			local under = pointed_thing.under
			local under_node = minetest.get_node(under)

			if above.y == (under.y + 1) and under_node.name == name then
				return
			end
			return previous_on_place(itemstack, placer, pointed_thing, ...)
		end
	end

	minetest.register_node(":" .. name, node)

	minetest.register_craft({
		output = name .. " 32",
		recipe = {
			{"group:wool", "group:wool", "group:wool"},
			{"group:wool", recipe, "group:wool"}
		}
	})
end