local modname = minetest.get_current_modname()

local root_alive = modname .. ":root_alive"

blockgame.register_abm({
	label = "kill roots",
	nodenames = {root_alive},
	interval = 20,
	chance = 1,
	action = function (pos, node)
		local can_live = blockgame.any(blockgame.vector.get_neighbors(pos), function (pos)
			return blockgame.item_matches(minetest.get_node(pos).name, {
				root_alive,
				modname .. ":log_alive",
				modname .. ":sapling",
			})
		end)

		if can_live then return end

		minetest.set_node(pos, {name = modname .. ":root"})
	end,
})