Localize most variables

12 files changed, 292 insertions, 304 deletions

diff --git a/technic/helpers.lua b/technic/helpers.lua
index 459b482..663a66a 100644
--- a/technic/helpers.lua
+++ b/technic/helpers.lua
@@ -1,21 +1,3 @@
-function get_item_meta (string)
-	if string.find(string, "return {") then
-		return minetest.deserialize(string)
-	else return nil
-	end
-end
-
-function set_item_meta (table)
-	return minetest.serialize(table)
-end
-
-function has_locked_chest_privilege(meta, player)
-	if player:get_player_name() ~= meta:get_string("owner") then
-		return false
-	end
-	return true
-end
-
 minetest.swap_node = minetest.swap_node or function(pos, node)
 	local oldmeta = minetest.get_meta(pos):to_table()
 	minetest.set_node(pos, node)
diff --git a/technic/machines/MV/init.lua b/technic/machines/MV/init.lua
index 92d1da9..d51bdf5 100644
--- a/technic/machines/MV/init.lua
+++ b/technic/machines/MV/init.lua
@@ -17,6 +17,7 @@ dofile(path.."/generator.lua")
 
 -- The power radiator supplies appliances with inductive coupled power:
 -- Lighting and associated textures is taken directly from VanessaE's homedecor and made electric.
-dofile(path.."/power_radiator.lua")
-dofile(path.."/lighting.lua")
+-- This is currently useless, slow, and mostly copied
+--dofile(path.."/power_radiator.lua")
+--dofile(path.."/lighting.lua")
 
diff --git a/technic/machines/other/constructor.lua b/technic/machines/other/constructor.lua
index f4f541f..1210c5b 100644
--- a/technic/machines/other/constructor.lua
+++ b/technic/machines/other/constructor.lua
@@ -21,7 +21,7 @@ minetest.register_craft({
 
 })
 
-mk1_on = function(pos, node)
+local function mk1_on(pos, node)
 	local meta = minetest.get_meta(pos)
 	local inv = meta:get_inventory()
 	local pos1={}
@@ -41,7 +41,7 @@ mk1_on = function(pos, node)
 	end
 end
 
-mk1_off = function(pos, node)
+local function mk1_off(pos, node)
 	if node.name == "technic:constructor_mk1_on" then
 		technic.swap_node(pos,"technic:constructor_mk1_off")
 		nodeupdate(pos)
@@ -97,7 +97,7 @@ minetest.register_node("technic:constructor_mk1_on", {
 
 --Constructor Mk2
 
-mk2_on = function(pos, node)
+local function mk2_on(pos, node)
 	local meta = minetest.get_meta(pos)
 	local inv = meta:get_inventory()
 	local pos1={}
@@ -123,7 +123,7 @@ mk2_on = function(pos, node)
 	end
 end
 
-mk2_off = function(pos, node)
+local function mk2_off(pos, node)
 	if node.name == "technic:constructor_mk2_on" then
 		technic.swap_node(pos,"technic:constructor_mk2_off")
 		nodeupdate(pos)
@@ -181,7 +181,7 @@ minetest.register_node("technic:constructor_mk2_on", {
 
 
 -- Constructor Mk3
-mk3_on = function(pos, node)
+local function mk3_on(pos, node)
 	local meta = minetest.get_meta(pos)
 	local inv = meta:get_inventory()
 	
@@ -225,7 +225,7 @@ mk3_on = function(pos, node)
 	end
 end
 
-mk3_off = function(pos, node)
+local function mk3_off(pos, node)
 	if node.name == "technic:constructor_mk3_on" then
 		technic.swap_node(pos,"technic:constructor_mk3_off")
 		nodeupdate(pos)
@@ -289,7 +289,7 @@ minetest.register_node("technic:constructor_mk3_on", {
 })
 
 
-deploy_node =function (inv, slot_name, pos1, node1, node)
+local function deploy_node(inv, slot_name, pos1, node1, node)
 	if node1.name == "air" then 
 		if not inv:is_empty(slot_name) then
 			stack1=inv:get_list(slot_name)
diff --git a/technic/machines/other/frames.lua b/technic/machines/other/frames.lua
index 9eaf63e..9ee25da 100644
--- a/technic/machines/other/frames.lua
+++ b/technic/machines/other/frames.lua
@@ -43,7 +43,7 @@ local function get_face(pos,ppos,pvect)
 	end
 end
 
-function lines(str)
+local function lines(str)
 	local t = {}
 	local function helper(line) table.insert(t, line) return "" end
 	helper((str:gsub("(.-)\r?\n", helper)))
diff --git a/technic/machines/other/injector.lua b/technic/machines/other/injector.lua
index f59867c..205b8b4 100644
--- a/technic/machines/other/injector.lua
+++ b/technic/machines/other/injector.lua
@@ -74,7 +74,7 @@ minetest.register_abm({
 	end,
 })
 
-function inject_items (pos)
+local function inject_items (pos)
 		local meta=minetest.env:get_meta(pos) 
 		local inv = meta:get_inventory()
 		local mode=meta:get_string("mode")
diff --git a/technic/machines/register/alloy_furnace.lua b/technic/machines/register/alloy_furnace.lua
index 64080c1..1195b50 100644
--- a/technic/machines/register/alloy_furnace.lua
+++ b/technic/machines/register/alloy_furnace.lua
@@ -6,11 +6,11 @@ technic.alloy_recipes = {}
 
 -- Register recipe in a table
 technic.register_alloy_recipe = function(metal1, count1, metal2, count2, result, count3)
-	in1 = {
+	local in1 = {
 		name  = metal1,
 		count = count1,
 	}
-	in2 = {
+	local in2 = {
 		name  = metal2,
 		count = count2,
 	}
diff --git a/technic/machines/register/battery_box.lua b/technic/machines/register/battery_box.lua
index f9bc893..55431e7 100644
--- a/technic/machines/register/battery_box.lua
+++ b/technic/machines/register/battery_box.lua
@@ -161,14 +161,14 @@ function technic.charge_tools(meta, batt_charge, charge_step)
 		return batt_charge
 	end
 	local srcstack = inv:get_stack("src", 1)
-	local src_meta = get_item_meta(srcstack:get_metadata())
+	local src_meta = minetest.deserialize(srcstack:get_metadata())
 
 	local toolname = srcstack:get_name()
 	if not technic.power_tools[toolname] then
 		return batt_charge
 	end
 	-- Set meta data for the tool if it didn't do it itself
-	src_meta = get_item_meta(srcstack:get_metadata())
+	src_meta = minetest.deserialize(srcstack:get_metadata())
 	src_meta = src_meta or {}
 	if not src_meta.charge then
 		src_meta.charge = 0
@@ -185,7 +185,7 @@ function technic.charge_tools(meta, batt_charge, charge_step)
 	batt_charge = batt_charge - charge_step
 	technic.set_RE_wear(srcstack, tool_charge, item_max_charge)
 	src_meta.charge = tool_charge
-	srcstack:set_metadata(set_item_meta(src_meta))
+	srcstack:set_metadata(minetest.serialize(src_meta))
 	inv:set_stack("src", 1, srcstack)
 	return batt_charge
 end
@@ -202,7 +202,7 @@ function technic.discharge_tools(meta, batt_charge, charge_step, max_charge)
 		return batt_charge
 	end
 	-- Set meta data for the tool if it didn't do it itself :-(
-	local src_meta = get_item_meta(srcstack:get_metadata())
+	local src_meta = minetest.deserialize(srcstack:get_metadata())
 	src_meta = src_meta or {}
 	if not src_meta.charge then
 		src_meta.charge = 0
@@ -220,7 +220,7 @@ function technic.discharge_tools(meta, batt_charge, charge_step, max_charge)
 	batt_charge = batt_charge + charge_step
 	technic.set_RE_wear(srcstack, tool_charge, item_max_charge)
 	src_meta.charge = tool_charge
-	srcstack:set_metadata(set_item_meta(src_meta))
+	srcstack:set_metadata(minetest.serialize(src_meta))
 	inv:set_stack("dst", 1, srcstack)
 	return batt_charge
 end
diff --git a/technic/tools/chainsaw.lua b/technic/tools/chainsaw.lua
index 67ec43d..fd8ce2c 100644
--- a/technic/tools/chainsaw.lua
+++ b/technic/tools/chainsaw.lua
@@ -3,44 +3,6 @@ local chainsaw_max_charge      = 30000 -- 30000 - Maximum charge of the saw
 local chainsaw_charge_per_node = 12    -- 12    - Gives 2500 nodes on a single charge (about 50 complete normal trees)
 local chainsaw_leaves          = true  -- true  - Cut down entire trees, leaves and all
 
-local S = technic.getter
-
-technic.register_power_tool("technic:chainsaw", chainsaw_max_charge)
-
-minetest.register_tool("technic:chainsaw", {
-	description = S("Chainsaw"),
-	inventory_image = "technic_chainsaw.png",
-	stack_max = 1,
-	on_use = function(itemstack, user, pointed_thing)
-		if pointed_thing.type ~= "node" then
-			return itemstack
-		end
-		local meta = get_item_meta(itemstack:get_metadata())
-		if not meta or not meta.charge then
-			return
-		end
-		-- Send current charge to digging function so that the chainsaw will stop after digging a number of nodes.
-		if meta.charge < chainsaw_charge_per_node then
-			return
-		end
-
-		local pos = minetest.get_pointed_thing_position(pointed_thing, above)
-		meta.charge = chainsaw_dig_it(pos, user, meta.charge)
-		technic.set_RE_wear(itemstack, meta.charge, chainsaw_max_charge)
-		itemstack:set_metadata(set_item_meta(meta))
-		return itemstack
-	end,
-})
-
-minetest.register_craft({
-        output = 'technic:chainsaw',
-        recipe = {
-                {'technic:stainless_steel_ingot', 'technic:stainless_steel_ingot', 'technic:battery'},
-                {'technic:stainless_steel_ingot', 'technic:motor',                 'technic:battery'},
-                {'',                               '',                             'default:copper_ingot'},
-        }
-})
-
 -- The default stuff
 local timber_nodenames={["default:jungletree"] = true,
                         ["default:papyrus"]    = true,
@@ -155,55 +117,17 @@ if( minetest.get_modpath("farming_plus") ~= nil ) then
    end
 end
 
--- Table for saving what was sawed down
-local produced
 
--- Saw down trees entry point
-chainsaw_dig_it = function(pos, player,current_charge)
-        local remaining_charge=current_charge
-
-        -- Save the currently installed dropping mechanism so we can restore it.
-	local original_handle_node_drops = minetest.handle_node_drops
-
-        -- A bit of trickery here: use a different node drop callback
-        -- and restore the original afterwards.
-        minetest.handle_node_drops = chainsaw_handle_node_drops
-
-        -- clear result and start sawing things down
-        produced = {}
-        remaining_charge = recursive_dig(pos, remaining_charge, player)
-        minetest.sound_play("chainsaw", {pos = pos, gain = 1.0, max_hear_distance = 10,})
+local S = technic.getter
 
-        -- Restore the original noder drop handler
-        minetest.handle_node_drops = original_handle_node_drops
+technic.register_power_tool("technic:chainsaw", chainsaw_max_charge)
 
-        -- Now drop items for the player
-        local number, produced_item, p
-        for produced_item,number in pairs(produced) do
-                --print("ADDING ITEM: " .. produced_item .. " " .. number)
-                -- Drop stacks of 99 or less
-                p = {
-                        x = pos.x + math.random()*4,
-                        y = pos.y,
-                        z = pos.z + math.random()*4
-                }
-                while number > 99 do
-                        minetest.env:add_item(p, produced_item .. " 99")
-                        p = {
-                                x = pos.x + math.random()*4,
-                                y = pos.y,
-                                z = pos.z + math.random()*4
-                        }
-                        number = number - 99
-                end
-                minetest.env:add_item(p, produced_item .. " " .. number)
-        end
-        return remaining_charge
-end
+-- Table for saving what was sawed down
+local produced = nil
 
 -- Override the default handling routine to be able to count up the
 -- items sawed down so that we can drop them i an nice single stack
-chainsaw_handle_node_drops = function(pos, drops, digger)
+local function chainsaw_handle_node_drops(pos, drops, digger)
         -- Add dropped items to list of collected nodes
         local _, dropped_item
         for _, dropped_item in ipairs(drops) do
@@ -217,7 +141,7 @@ end
 
 -- This function does all the hard work. Recursively we dig the node at hand
 -- if it is in the table and then search the surroundings for more stuff to dig.
-recursive_dig = function(pos, remaining_charge, player)
+local function recursive_dig(pos, remaining_charge, player)
         local node=minetest.env:get_node(pos)
         local i=1
         -- Lookup node name in timber table:
@@ -277,3 +201,81 @@ recursive_dig = function(pos, remaining_charge, player)
         return remaining_charge
 end
 
+-- Saw down trees entry point
+local function chainsaw_dig_it(pos, player,current_charge)
+        local remaining_charge=current_charge
+
+        -- Save the currently installed dropping mechanism so we can restore it.
+	local original_handle_node_drops = minetest.handle_node_drops
+
+        -- A bit of trickery here: use a different node drop callback
+        -- and restore the original afterwards.
+        minetest.handle_node_drops = chainsaw_handle_node_drops
+
+        -- clear result and start sawing things down
+        produced = {}
+        remaining_charge = recursive_dig(pos, remaining_charge, player)
+        minetest.sound_play("chainsaw", {pos = pos, gain = 1.0, max_hear_distance = 10,})
+
+        -- Restore the original noder drop handler
+        minetest.handle_node_drops = original_handle_node_drops
+
+        -- Now drop items for the player
+        local number, produced_item, p
+        for produced_item,number in pairs(produced) do
+                --print("ADDING ITEM: " .. produced_item .. " " .. number)
+                -- Drop stacks of 99 or less
+                p = {
+                        x = pos.x + math.random()*4,
+                        y = pos.y,
+                        z = pos.z + math.random()*4
+                }
+                while number > 99 do
+                        minetest.env:add_item(p, produced_item .. " 99")
+                        p = {
+                                x = pos.x + math.random()*4,
+                                y = pos.y,
+                                z = pos.z + math.random()*4
+                        }
+                        number = number - 99
+                end
+                minetest.env:add_item(p, produced_item .. " " .. number)
+        end
+        return remaining_charge
+end
+
+
+minetest.register_tool("technic:chainsaw", {
+	description = S("Chainsaw"),
+	inventory_image = "technic_chainsaw.png",
+	stack_max = 1,
+	on_use = function(itemstack, user, pointed_thing)
+		if pointed_thing.type ~= "node" then
+			return itemstack
+		end
+		local meta = minetest.deserialize(itemstack:get_metadata())
+		if not meta or not meta.charge then
+			return
+		end
+		-- Send current charge to digging function so that the chainsaw will stop after digging a number of nodes.
+		if meta.charge < chainsaw_charge_per_node then
+			return
+		end
+
+		local pos = minetest.get_pointed_thing_position(pointed_thing, above)
+		meta.charge = chainsaw_dig_it(pos, user, meta.charge)
+		technic.set_RE_wear(itemstack, meta.charge, chainsaw_max_charge)
+		itemstack:set_metadata(minetest.serialize(meta))
+		return itemstack
+	end,
+})
+
+minetest.register_craft({
+        output = 'technic:chainsaw',
+        recipe = {
+                {'technic:stainless_steel_ingot', 'technic:stainless_steel_ingot', 'technic:battery'},
+                {'technic:stainless_steel_ingot', 'technic:motor',                 'technic:battery'},
+                {'',                               '',                             'default:copper_ingot'},
+        }
+})
+
diff --git a/technic/tools/flashlight.lua b/technic/tools/flashlight.lua
index 56d3137..61eceae 100644
--- a/technic/tools/flashlight.lua
+++ b/technic/tools/flashlight.lua
@@ -151,14 +151,14 @@ function check_for_flashlight(player)
 	local hotbar = inv:get_list("main")
 	for i = 1, 8 do
 		if hotbar[i]:get_name() == "technic:flashlight" then
-			local meta = get_item_meta(hotbar[i]:get_metadata())
+			local meta = minetest.deserialize(hotbar[i]:get_metadata())
 			if not meta or not meta.charge then
 				return false
 			end
 			if meta.charge - 2 > 0 then
 				meta.charge = meta.charge - 2;
 				technic.set_RE_wear(hotbar[i], meta.charge, flashlight_max_charge)
-				hotbar[i]:set_metadata(set_item_meta(meta))
+				hotbar[i]:set_metadata(minetest.serialize(meta))
 				inv:set_stack("main", i, hotbar[i])
 				return true
 			end
diff --git a/technic/tools/mining_drill.lua b/technic/tools/mining_drill.lua
index d5548fb..79eef53 100644
--- a/technic/tools/mining_drill.lua
+++ b/technic/tools/mining_drill.lua
@@ -42,7 +42,102 @@ for i = 1, 4 do
 	})
 end
 
-function drill_dig_it(pos, player, drill_type, mode)
+local mining_drill_mode_text = {
+	{S("Single node.")},
+	{S("3 nodes deep.")},
+	{S("3 nodes wide.")},
+	{S("3 nodes tall.")},
+	{S("3x3 nodes.")},
+}
+
+local function drill_dig_it0 (pos,player)
+	local node=minetest.env:get_node(pos)
+	if node.name == "air" or node.name == "ignore" then return end
+	if node.name == "default:lava_source" then return end
+	if node.name == "default:lava_flowing" then return end
+	if node.name == "default:water_source" then minetest.env:remove_node(pos) return end
+	if node.name == "default:water_flowing" then minetest.env:remove_node(pos) return end
+	minetest.node_dig(pos,node,player)
+end
+
+local function drill_dig_it1 (player)
+	local dir=player:get_look_dir()
+	if math.abs(dir.x)>math.abs(dir.z) then 
+		if dir.x>0 then return 0 end
+		return 1
+	end
+	if dir.z>0 then return 2 end
+	return 3
+end
+
+local function drill_dig_it2 (pos,player)
+	drill_dig_it0 (pos,player)
+	pos.z=pos.z+1
+	drill_dig_it0 (pos,player)
+	pos.z=pos.z-2
+	drill_dig_it0 (pos,player)
+	pos.z=pos.z+1
+	pos.y=pos.y+1
+	drill_dig_it0 (pos,player)
+	pos.z=pos.z+1
+	drill_dig_it0 (pos,player)
+	pos.z=pos.z-2
+	drill_dig_it0 (pos,player)
+	pos.z=pos.z+1
+	pos.y=pos.y-2
+	drill_dig_it0 (pos,player)
+	pos.z=pos.z+1
+	drill_dig_it0 (pos,player)
+	pos.z=pos.z-2
+	drill_dig_it0 (pos,player)
+end
+
+local function drill_dig_it3 (pos,player)
+	drill_dig_it0 (pos,player)
+	pos.x=pos.x+1
+	drill_dig_it0 (pos,player)
+	pos.x=pos.x-2
+	drill_dig_it0 (pos,player)
+	pos.x=pos.x+1
+	pos.y=pos.y+1
+	drill_dig_it0 (pos,player)
+	pos.x=pos.x+1
+	drill_dig_it0 (pos,player)
+	pos.x=pos.x-2
+	drill_dig_it0 (pos,player)
+	pos.x=pos.x+1
+	pos.y=pos.y-2
+	drill_dig_it0 (pos,player)
+	pos.x=pos.x+1
+	drill_dig_it0 (pos,player)
+	pos.x=pos.x-2
+	drill_dig_it0 (pos,player)
+end
+
+local function drill_dig_it4 (pos,player)
+	drill_dig_it0 (pos,player)
+	pos.x=pos.x+1
+	drill_dig_it0 (pos,player)
+	pos.x=pos.x-2
+	drill_dig_it0 (pos,player)
+	pos.x=pos.x+1
+	pos.z=pos.z+1
+	drill_dig_it0 (pos,player)
+	pos.x=pos.x+1
+	drill_dig_it0 (pos,player)
+	pos.x=pos.x-2
+	drill_dig_it0 (pos,player)
+	pos.x=pos.x+1
+	pos.z=pos.z-2
+	drill_dig_it0 (pos,player)
+	pos.x=pos.x+1
+	drill_dig_it0 (pos,player)
+	pos.x=pos.x-2
+	drill_dig_it0 (pos,player)
+end
+
+
+local function drill_dig_it(pos, player, drill_type, mode)
 	local charge
 	if mode == 1 then
 		drill_dig_it0(pos, player)
@@ -100,9 +195,9 @@ function drill_dig_it(pos, player, drill_type, mode)
 	
 	if mode==4 then -- 3 tall, selected in the middle
 		drill_dig_it0 (pos,player)
-		pos.y=pos.y+1
+		pos.y=pos.y-1
 		drill_dig_it0 (pos,player)
-		pos.y=pos.y-2
+		pos.y=pos.y-1
 		drill_dig_it0 (pos,player)
 	end
 
@@ -135,92 +230,99 @@ function drill_dig_it(pos, player, drill_type, mode)
 	return charge
 end
 
-function drill_dig_it0 (pos,player)
-	local node=minetest.env:get_node(pos)
-	if node.name == "air" or node.name == "ignore" then return end
-	if node.name == "default:lava_source" then return end
-	if node.name == "default:lava_flowing" then return end
-	if node.name == "default:water_source" then minetest.env:remove_node(pos) return end
-	if node.name == "default:water_flowing" then minetest.env:remove_node(pos) return end
-	minetest.node_dig(pos,node,player)
+local function mining_drill_mk2_setmode(user,itemstack)
+	local player_name=user:get_player_name()
+	local item=itemstack:to_table()
+	local meta=minetest.deserialize(item["metadata"])
+	if meta==nil then
+		meta={}
+		mode=0
+	end
+	if meta["mode"]==nil then
+		minetest.chat_send_player(player_name, S("Hold shift and use to change Mining Drill Mk%d modes."):format(2))
+		meta["mode"]=0
+		mode=0
+	end
+	mode=(meta["mode"])
+	mode=mode+1
+	if mode>=5 then mode=1 end
+	minetest.chat_send_player(player_name, S("Mining Drill Mk%d Mode %d"):format(2, mode)..": "..mining_drill_mode_text[mode][1])
+	item["name"]="technic:mining_drill_mk2_"..mode
+	meta["mode"]=mode
+	item["metadata"]=minetest.serialize(meta)
+	itemstack:replace(item)
+	return itemstack
 end
 
-function drill_dig_it1 (player)
-	local dir=player:get_look_dir()
-	if math.abs(dir.x)>math.abs(dir.z) then 
-		if dir.x>0 then return 0 end
-		return 1
+local function mining_drill_mk3_setmode(user,itemstack)
+	local player_name=user:get_player_name()
+	local item=itemstack:to_table()
+	local meta=minetest.deserialize(item["metadata"])
+	if meta==nil then
+		meta={}
+		mode=0
 	end
-	if dir.z>0 then return 2 end
-	return 3
+	if meta["mode"]==nil then
+		minetest.chat_send_player(player_name, S("Hold shift and use to change Mining Drill Mk%d modes."):format(3))
+		meta["mode"]=0
+		mode=0
+	end
+	mode=(meta["mode"])
+	mode=mode+1
+	if mode>=6 then mode=1 end
+	minetest.chat_send_player(player_name, S("Mining Drill Mk%d Mode %d"):format(3, mode)..": "..mining_drill_mode_text[mode][1])
+	item["name"]="technic:mining_drill_mk3_"..mode
+	meta["mode"]=mode
+	item["metadata"]=minetest.serialize(meta)
+	itemstack:replace(item)
+	return itemstack
 end
 
-function drill_dig_it2 (pos,player)
-	drill_dig_it0 (pos,player)
-	pos.z=pos.z+1
-	drill_dig_it0 (pos,player)
-	pos.z=pos.z-2
-	drill_dig_it0 (pos,player)
-	pos.z=pos.z+1
-	pos.y=pos.y+1
-	drill_dig_it0 (pos,player)
-	pos.z=pos.z+1
-	drill_dig_it0 (pos,player)
-	pos.z=pos.z-2
-	drill_dig_it0 (pos,player)
-	pos.z=pos.z+1
-	pos.y=pos.y-2
-	drill_dig_it0 (pos,player)
-	pos.z=pos.z+1
-	drill_dig_it0 (pos,player)
-	pos.z=pos.z-2
-	drill_dig_it0 (pos,player)
-end
-function drill_dig_it3 (pos,player)
-	drill_dig_it0 (pos,player)
-	pos.x=pos.x+1
-	drill_dig_it0 (pos,player)
-	pos.x=pos.x-2
-	drill_dig_it0 (pos,player)
-	pos.x=pos.x+1
-	pos.y=pos.y+1
-	drill_dig_it0 (pos,player)
-	pos.x=pos.x+1
-	drill_dig_it0 (pos,player)
-	pos.x=pos.x-2
-	drill_dig_it0 (pos,player)
-	pos.x=pos.x+1
-	pos.y=pos.y-2
-	drill_dig_it0 (pos,player)
-	pos.x=pos.x+1
-	drill_dig_it0 (pos,player)
-	pos.x=pos.x-2
-	drill_dig_it0 (pos,player)
+
+local function mining_drill_mk2_handler(itemstack, user, pointed_thing)
+	local keys = user:get_player_control()
+	local player_name = user:get_player_name()
+	local meta = minetest.deserialize(itemstack:get_metadata())
+	if not meta or not meta.mode or keys.sneak then
+		return mining_drill_mk2_setmode(user, itemstack)
+	end
+	if pointed_thing.type ~= "node" or not meta.charge then
+		return
+	end
+	if meta.charge - mining_drill_power_usage > 0 then
+		local pos = minetest.get_pointed_thing_position(pointed_thing, above)
+		local charge_to_take = drill_dig_it(pos, user, 2, meta.mode)
+		meta.charge = meta.charge - charge_to_take
+		meta.charge = math.max(meta.charge, 0)
+		itemstack:set_metadata(minetest.serialize(meta))
+		technic.set_RE_wear(itemstack, meta.charge, mining_drill_mk2_max_charge)
+	end
+	return itemstack
 end
 
-function drill_dig_it4 (pos,player)
-	drill_dig_it0 (pos,player)
-	pos.x=pos.x+1
-	drill_dig_it0 (pos,player)
-	pos.x=pos.x-2
-	drill_dig_it0 (pos,player)
-	pos.x=pos.x+1
-	pos.z=pos.z+1
-	drill_dig_it0 (pos,player)
-	pos.x=pos.x+1
-	drill_dig_it0 (pos,player)
-	pos.x=pos.x-2
-	drill_dig_it0 (pos,player)
-	pos.x=pos.x+1
-	pos.z=pos.z-2
-	drill_dig_it0 (pos,player)
-	pos.x=pos.x+1
-	drill_dig_it0 (pos,player)
-	pos.x=pos.x-2
-	drill_dig_it0 (pos,player)
+local function mining_drill_mk3_handler(itemstack, user, pointed_thing)
+	local keys = user:get_player_control()
+	local player_name = user:get_player_name()
+	local meta = minetest.deserialize(itemstack:get_metadata())
+	if not meta or not meta.mode or keys.sneak then
+		return mining_drill_mk3_setmode(user, itemstack)
+	end
+	if pointed_thing.type ~= "node" or not meta.charge then
+		return
+	end
+	if meta.charge - mining_drill_power_usage > 0 then
+		local pos = minetest.get_pointed_thing_position(pointed_thing, above)
+		local charge_to_take = drill_dig_it(pos, user, 3, meta.mode)
+		meta.charge = meta.charge - charge_to_take
+		meta.charge = math.max(meta.charge, 0)
+		itemstack:set_metadata(minetest.serialize(meta))
+		technic.set_RE_wear(itemstack, meta.charge, mining_drill_mk3_max_charge)
+	end
+	return itemstack
 end
 
 technic.register_power_tool("technic:mining_drill", mining_drill_max_charge)
+
 minetest.register_tool("technic:mining_drill", {
 	description = S("Mining Drill Mk%d"):format(1),
 	inventory_image = "technic_mining_drill.png",
@@ -229,7 +331,7 @@ minetest.register_tool("technic:mining_drill", {
 		if pointed_thing.type ~= "node" then
 			return itemstack
 		end
-		local meta = get_item_meta(itemstack:get_metadata())
+		local meta = minetest.deserialize(itemstack:get_metadata())
 		if not meta or not meta.charge then
 			return
 		end
@@ -237,7 +339,7 @@ minetest.register_tool("technic:mining_drill", {
 			local pos = minetest.get_pointed_thing_position(pointed_thing, above)
 			charge_to_take = drill_dig_it(pos, user, 1, 1)
 			meta.charge = meta.charge - mining_drill_power_usage
-			itemstack:set_metadata(set_item_meta(meta))
+			itemstack:set_metadata(minetest.serialize(meta))
 			technic.set_RE_wear(itemstack, meta.charge, mining_drill_max_charge)
 		end
 		return itemstack
@@ -293,102 +395,3 @@ for i=1,5,1 do
 		end,
 	})
 end
-
-function mining_drill_mk2_handler(itemstack, user, pointed_thing)
-	local keys = user:get_player_control()
-	local player_name = user:get_player_name()
-	local meta = get_item_meta(itemstack:get_metadata())
-	if not meta or not meta.mode or keys.sneak then
-		return mining_drill_mk2_setmode(user, itemstack)
-	end
-	if pointed_thing.type ~= "node" or not meta.charge then
-		return
-	end
-	if meta.charge - mining_drill_power_usage > 0 then
-		local pos = minetest.get_pointed_thing_position(pointed_thing, above)
-		local charge_to_take = drill_dig_it(pos, user, 2, meta.mode)
-		meta.charge = meta.charge - charge_to_take
-		meta.charge = math.max(meta.charge, 0)
-		itemstack:set_metadata(set_item_meta(meta))
-		technic.set_RE_wear(itemstack, meta.charge, mining_drill_mk2_max_charge)
-	end
-	return itemstack
-end
-
-function mining_drill_mk3_handler(itemstack, user, pointed_thing)
-	local keys = user:get_player_control()
-	local player_name = user:get_player_name()
-	local meta = get_item_meta(itemstack:get_metadata())
-	if not meta or not meta.mode or keys.sneak then
-		return mining_drill_mk3_setmode(user, itemstack)
-	end
-	if pointed_thing.type ~= "node" or not meta.charge then
-		return
-	end
-	if meta.charge - mining_drill_power_usage > 0 then
-		local pos = minetest.get_pointed_thing_position(pointed_thing, above)
-		local charge_to_take = drill_dig_it(pos, user, 3, meta.mode)
-		meta.charge = meta.charge - charge_to_take
-		meta.charge = math.max(meta.charge, 0)
-		itemstack:set_metadata(set_item_meta(meta))
-		technic.set_RE_wear(itemstack, meta.charge, mining_drill_mk3_max_charge)
-	end
-	return itemstack
-end
-
-mining_drill_mode_text = {
-	{S("Single node.")},
-	{S("3 nodes deep.")},
-	{S("3 nodes wide.")},
-	{S("3 nodes tall.")},
-	{S("3x3 nodes.")},
-}
-
-function mining_drill_mk2_setmode(user,itemstack)
-	local player_name=user:get_player_name()
-	local item=itemstack:to_table()
-	local meta=get_item_meta(item["metadata"])
-	if meta==nil then
-		meta={}
-		mode=0
-	end
-	if meta["mode"]==nil then
-		minetest.chat_send_player(player_name, S("Hold shift and use to change Mining Drill Mk%d modes."):format(2))
-		meta["mode"]=0
-		mode=0
-	end
-	mode=(meta["mode"])
-	mode=mode+1
-	if mode>=5 then mode=1 end
-	minetest.chat_send_player(player_name, S("Mining Drill Mk%d Mode %d"):format(2, mode)..": "..mining_drill_mode_text[mode][1])
-	item["name"]="technic:mining_drill_mk2_"..mode
-	meta["mode"]=mode
-	item["metadata"]=set_item_meta(meta)
-	itemstack:replace(item)
-	return itemstack
-end
-
-function mining_drill_mk3_setmode(user,itemstack)
-	local player_name=user:get_player_name()
-	local item=itemstack:to_table()
-	local meta=get_item_meta(item["metadata"])
-	if meta==nil then
-		meta={}
-		mode=0
-	end
-	if meta["mode"]==nil then
-		minetest.chat_send_player(player_name, S("Hold shift and use to change Mining Drill Mk%d modes."):format(3))
-		meta["mode"]=0
-		mode=0
-	end
-	mode=(meta["mode"])
-	mode=mode+1
-	if mode>=6 then mode=1 end
-	minetest.chat_send_player(player_name, S("Mining Drill Mk%d Mode %d"):format(3, mode)..": "..mining_drill_mode_text[mode][1])
-	item["name"]="technic:mining_drill_mk3_"..mode
-	meta["mode"]=mode
-	item["metadata"]=set_item_meta(meta)
-	itemstack:replace(item)
-	return itemstack
-end
-
diff --git a/technic/tools/mining_lasers.lua b/technic/tools/mining_lasers.lua
index caa416f..64628eb 100644
--- a/technic/tools/mining_lasers.lua
+++ b/technic/tools/mining_lasers.lua
@@ -150,7 +150,7 @@ for _, m in pairs(mining_lasers_list) do
 		inventory_image = "technic_mining_laser_mk"..m[1]..".png",
 		stack_max = 1,
 		on_use = function(itemstack, user)
-			local meta = get_item_meta(itemstack:get_metadata())
+			local meta = minetest.deserialize(itemstack:get_metadata())
 			if not meta or not meta.charge then
 				return
 			end
@@ -158,7 +158,7 @@ for _, m in pairs(mining_lasers_list) do
 				laser_shoot(user, m[2], "technic_laser_beam_mk"..m[1]..".png", "technic_laser_mk"..m[1])
 				meta.charge = meta.charge - 400
 				technic.set_RE_wear(itemstack, meta.charge, m[3])
-				itemstack:set_metadata(set_item_meta(meta))
+				itemstack:set_metadata(minetest.serialize(meta))
 			end
 			return itemstack
 		end,
diff --git a/technic/tools/sonic_screwdriver.lua b/technic/tools/sonic_screwdriver.lua
index 1639834..cd2ce51 100644
--- a/technic/tools/sonic_screwdriver.lua
+++ b/technic/tools/sonic_screwdriver.lua
@@ -22,7 +22,7 @@ minetest.register_tool("technic:sonic_screwdriver", {
 		if node.param2 == nil then
 			return
 		end
-		local meta1 = get_item_meta(itemstack:get_metadata())
+		local meta1 = minetest.deserialize(itemstack:get_metadata())
 		if not meta1 or not meta1.charge then
 			return
 		end
@@ -48,7 +48,7 @@ minetest.register_tool("technic:sonic_screwdriver", {
 				minetest.swap_node(pos, node)
 
 				meta1.charge = meta1.charge - 100
-				itemstack:set_metadata(set_item_meta(meta1))
+				itemstack:set_metadata(minetest.serialize(meta1))
 				technic.set_RE_wear(itemstack, meta1.charge, sonic_screwdriver_max_charge)
 			end
 		end