functions.lua

local S = cottages.S

--- if no owner is set, all players may use the node, else only the owner
cottages.player_can_use = function(meta, player)
	if( not( player) or not( meta )) then
		return false
	end
	local pname = player:get_player_name()
	local owner = meta:get_string('owner' )
	local public = meta:get_string('public')
	if( not(owner) or owner=="" or owner==pname or public=="public") then
		return true
	end
	return false
end

-- call this in on_receive_fields and add suitable buttons in order
-- to switch between public and private use
cottages.switch_public = function(pos, formname, fields, sender, name_of_the_thing)
	-- switch between public and private
	local meta = minetest.get_meta(pos)
	local public = meta:get_string("public")
	local owner = meta:get_string("owner")
	if( sender and sender:get_player_name() == owner and fields.public) then
		if(public ~= "public") then
			meta:set_string("public", "public")
			meta:set_string("infotext",
				S("Public "..name_of_the_thing.." (owned by @1)", owner))
			minetest.chat_send_player(owner,
				S("Your "..name_of_the_thing.." can now be used by other players as well."))
		else
			meta:set_string("public", "")
			meta:set_string("infotext",
				S("Private "..name_of_the_thing.." (owned by @1)", owner))
			minetest.chat_send_player(owner,
				S("Your "..name_of_the_thing.." can only be used by yourself."))
		end
		return true
	end
end

cottages.get_def_field = function(type, name, fieldname)
	if type == "craftitem" then
		if not minetest.registered_craftitems[name] then
			return nil
		end
		return minetest.registered_craftitems[name][fieldname]
	else
		if not minetest.registered_nodes[name] then
			return nil
		end
		return minetest.registered_nodes[name][fieldname]
	end
end