technic/technic/sonic_screwdriver.lua

local sonic_screwdriver_max_charge=15000
technic.register_HV_power_tool ("technic:sonic_screwdriver",sonic_screwdriver_max_charge)

minetest.register_tool("technic:sonic_screwdriver", {
			description = "Sonic Screwdriver",
			inventory_image = "technic_sonic_screwdriver.png",
			on_use = function(itemstack, user, pointed_thing)
					-- Must be pointing to facedir applicable node
					if pointed_thing.type~="node" then return end
					local pos=minetest.get_pointed_thing_position(pointed_thing,above)
					local node=minetest.env:get_node(pos)
					local node_name=node.name
						if minetest.registered_nodes[node_name].paramtype2 == "facedir" or minetest.registered_nodes[node_name].paramtype2 == "wallmounted" then
					if node.param2==nil  then return end
					item=itemstack:to_table()
					local meta1=get_item_meta(item["metadata"])
					if meta1==nil then return end --tool not charghed
					if meta1["charge"]==nil then return end
					charge=meta1["charge"]
					if charge-100>0 then
						minetest.sound_play("technic_sonic_screwdriver", {pos = pos, gain = 0.3, max_hear_distance = 10,})
						local n = node.param2
						if minetest.registered_nodes[node_name].paramtype2 == "facedir" then
						   n = n+1
						if n == 4 then n = 0 end
						else
							n = n+1
							if n == 6 then n = 0 end
						end
						-- hacky_swap_node, unforunatly.
						local meta = minetest.env:get_meta(pos)
						local meta0 = meta:to_table()
						node.param2 = n
						minetest.env:set_node(pos,node)
						meta = minetest.env:get_meta(pos)
						meta:from_table(meta0)

						charge=charge-100;  
						meta1["charge"]=charge
						item["metadata"]=set_item_meta(meta1)
						set_RE_wear(item,charge,sonic_screwdriver_max_charge)
						itemstack:replace(item)
						end
						return itemstack
						else
						return itemstack
						end
						end,
		 
	})
 
minetest.register_craft({
	output = "technic:sonic_screwdriver",
	recipe = {
		{"default:diamond"},
		{"technic:battery"},
		{"technic:stainless_steel_ingot"}
		}
})