local modname = minetest.get_current_modname()

-- settle nodes that have been still for a while.
blockgame.register_increasing_abm({
	id = modname .. ":settle_loose_nodes",
	label = "settle loose nodes",
	nodenames = {"group:loose"},
	interval = 20,
	chance = 5,
	rate = function (pos, node, data)
		return data.value + math.random(1, 9)
	end,
	check = function (pos, node, data)
		local below = pos + blockgame.vector.dirs.down
		if minetest.get_node(below).name == "air" then
			minetest.check_for_falling(pos)
			return false
		end

		return data.value >= 30
	end,
	action = function (pos, node, data)
		local def = minetest.registered_nodes[node.name]
		minetest.set_node(pos, {name = def.settle_into})
	end,
})



local events = blockgame.events.namespace("api")

events.listen("before_register_node", function (data)
	local name = data.name
	local def = data.def
	local mod = data.mod

	if not def.loose_variant then return end

	blockgame.register_node(def.loose_variant, {
		description = "Loose " .. def.description,
		tiles = def.tiles, -- temporary
		groups = blockgame.underride({
			loose = 1,
			falling_node = 1
		}, def.groups),
		settle_into = mod .. ":" .. name,
	}, mod)
end)