-- get node
local pos = self.object:getpos()
local node = minetest.env:get_node(pos)

-------SNIP!-------

-- Become item when hitting a node
if self.lastpos.x~=nil then --If there is no lastpos for some reason
	if node.name ~= "air" and node.name ~= "turret:turret" then
		minetest.env:add_item(self.lastpos, 'throwing:arrow')
		self.object:remove()
	end
end
self.lastpos={x=pos.x, y=pos.y, z=pos.z}