Timber mod - Minetest

minetest.register_tool("timber:axe",{
 type="tool",

    description = "Mese axe",
    groups = {},
    inventory_image = "mese_axe.png",
    wield_image = "mese_axe.png",
    wield_scale = {x=1,y=1,z=1},
    stack_max = 1,
    liquids_pointable = false,
    tool_capabilities = {
        full_punch_interval=1.5,
        max_drop_level=1,
        groupcaps={
        choppy={maxlevel=2, uses=20, leveldiff=1, times={[1]=1.60, [2]=1.20, [3]=0.80}}
        }
    },
})


minetest.register_craft({
    output = 'timber:axe 1',
    recipe = {
        {'default:mese', 'default:mese'},
        {'default:mese', 'default:stick'},
        {'', 'default:stick'}

    },
})

timber_nodenames={"default:jungletree", "default:papyrus", "default:cactus", "default:tree"}

minetest.register_on_dignode(function(pos, node, digger)
    if digger:get_wielded_item():get_name() ~= "timber:axe" then
    return
end
    local i=1
    while timber_nodenames[i]~=nil do
        if node.name==timber_nodenames[i] then
            np={x=pos.x, y=pos.y+1, z=pos.z}
            while minetest.env:get_node(np).name==timber_nodenames[i] do
                minetest.env:remove_node(np)
                digger:get_inventory():add_item('main', timber_nodenames[i])
                np={x=np.x, y=np.y+1, z=np.z}
            end
        end
        i=i+1
    end
end)