--[[ Nodestacking function by https://github.com/minetest-mods/gloopblocks ]]

local nodes={"scaffolding:reinforced_iron_scaffolding",
            "scaffolding:iron_scaffolding",
            "scaffolding:scaffolding",
            "scaffolding:reinforced_scaffolding"
        }

for i = 1, 4 do
    local nodes = nodes[i]
    minetest.override_item(nodes, {
        on_rightclick = function(pos, node, clicker, itemstack)
            if itemstack and itemstack:get_name() == node.name then
                for i = 1,19 do
                    if minetest.get_node({x=pos.x,z=pos.z}).name == nodes and scafffound ~= 0 and scafffound ~= 1 then
                        local scafffound = 1
                        return itemstack
                    else
                        break
                    end
                end
                for i = 1,19 do
                    if minetest.get_node({x=pos.x,y=pos.y+i,z=pos.z}).name == "air" and scaffworked ~= 1 and scaffworked ~= 0 then
                        minetest.set_node({x=pos.x,y=pos.y+i,z=pos.z}, {name=nodes})
                        local scaffworked = 1
                        return ItemStack(tostring(itemstack:get_name().." "..tostring(itemstack:get_count()-1)))
                    elseif minetest.get_node({x=pos.x,y=pos.y+i,z=pos.z}).name == nodes then	
                    else
                        local scaffworked = 0
                    end
                end
                if scaffworked == 1 then
                    return ItemStack(tostring(itemstack:get_name().." "..tostring(itemstack:get_count()-1)))
                else
                    return itemstack
                end
            else return itemstack end
        end,
    })
end