Add support for minetest.swap_node

technic/helpers.lua

@@ -8,3 +8,27 @@ 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)
+	minetest.get_meta(pos):from_table(oldmeta)
+end
+
+-- Only changes name, keeps other params
+function technic.swap_node(pos, name)
+	local node = minetest.get_node(pos)
+	if node.name ~= name then
+		node.name = name
+		minetest.swap_node(pos, node)
+	end
+	return node.name
+end
+

technic/init.lua

@@ -40,27 +40,6 @@ dofile(modpath.."/tools/init.lua")
 -- Aliases for legacy node/item names
 dofile(modpath.."/legacy.lua")
 
-function has_locked_chest_privilege(meta, player)
-	if player:get_player_name() ~= meta:get_string("owner") then
-		return false
-	end
-	return true
-end
-
--- Swap nodes out. Return the node name.
-function hacky_swap_node(pos, name)
-	local node = minetest.get_node(pos)
-	if node.name ~= name then
-		local meta = minetest.get_meta(pos)
-		local meta_table = meta:to_table()
-		node.name = name
-		minetest.set_node(pos, node)
-		meta = minetest.get_meta(pos)
-		meta:from_table(meta_table)
-	end
-	return node.name
-end
-
 if minetest.setting_get("log_mod") then
 	print(S("[Technic] Loaded in %f seconds"):format(os.clock() - load_start))
 end

technic/machines/HV/forcefield.lua

@@ -178,7 +178,7 @@ minetest.register_abm({
 			if node.name == "technic:forcefield_emitter_on" then
 				meta:set_int("HV_EU_demand", 0)
 				update_forcefield(pos, meta:get_int("range"), false)
-				hacky_swap_node(pos, "technic:forcefield_emitter_off")
+				technic.swap_node(pos, "technic:forcefield_emitter_off")
 				meta:set_string("infotext", S("%s Disabled"):format(machine_name))
 				return
 			end
@@ -186,11 +186,11 @@ minetest.register_abm({
 			meta:set_string("infotext", S("%s Unpowered"):format(machine_name))
 			if node.name == "technic:forcefield_emitter_on" then
 				update_forcefield(pos, meta:get_int("range"), false)
-				hacky_swap_node(pos, "technic:forcefield_emitter_off")
+				technic.swap_node(pos, "technic:forcefield_emitter_off")
 			end
 		elseif eu_input >= power_requirement then
 			if node.name == "technic:forcefield_emitter_off" then
-				hacky_swap_node(pos, "technic:forcefield_emitter_on")
+				technic.swap_node(pos, "technic:forcefield_emitter_on")
 				meta:set_string("infotext", S("%s Active"):format(machine_name))
 			end
 			update_forcefield(pos, meta:get_int("range"), true)

technic/machines/HV/nuclear_reactor.lua

@@ -214,7 +214,7 @@ minetest.register_abm({
 				if correct_fuel_count == 6 and
 				   check_reactor_structure(pos) then
 					meta:set_int("burn_time", 1)
-					hacky_swap_node(pos, "technic:hv_nuclear_reactor_core_active") 
+					technic.swap_node(pos, "technic:hv_nuclear_reactor_core_active") 
 					meta:set_int("HV_EU_supply", power_supply)
 					for idx, srcstack in pairs(srclist) do
 						srcstack:take_item()
@@ -226,7 +226,7 @@ minetest.register_abm({
 			meta:set_int("HV_EU_supply", 0)
 			meta:set_int("burn_time", 0)
 			meta:set_string("infotext", S("%s Idle"):format(machine_name))
-			hacky_swap_node(pos, "technic:hv_nuclear_reactor_core")
+			technic.swap_node(pos, "technic:hv_nuclear_reactor_core")
 		elseif burn_time > 0 then
 			damage_nearby_players(pos)
 			if not check_reactor_structure(pos) then

technic/machines/LV/cnc.lua

@@ -200,17 +200,17 @@ minetest.register_abm({
 		if inv:is_empty("src") or 
 		   (not minetest.registered_nodes[result]) or
 		   (not inv:room_for_item("dst", result)) then
-			hacky_swap_node(pos, machine_node)
+			technic.swap_node(pos, machine_node)
 			meta:set_string("infotext", S("%s Idle"):format(machine_name))
 			meta:set_string("cnc_product", "")
 			return
 		end
 
 		if eu_input < demand then
-			hacky_swap_node(pos, machine_node)
+			technic.swap_node(pos, machine_node)
 			meta:set_string("infotext", S("%s Unpowered"):format(machine_name))
 		elseif eu_input >= demand then
-			hacky_swap_node(pos, machine_node.."_active")
+			technic.swap_node(pos, machine_node.."_active")
 			meta:set_string("infotext", S("%s Active"):format(machine_name))
 			meta:set_int("src_time", meta:get_int("src_time") + 1)
 			if meta:get_int("src_time") >= 3 then -- 3 ticks per output

technic/machines/LV/coal_alloy_furnace.lua

@@ -121,7 +121,7 @@ minetest.register_abm({
 			local percent = math.floor(meta:get_float("fuel_time") /
 					meta:get_float("fuel_totaltime") * 100)
 			meta:set_string("infotext", S("%s Active"):format(machine_name).." ("..percent.."%)")
-			hacky_swap_node(pos, "technic:coal_alloy_furnace_active")
+			technic.swap_node(pos, "technic:coal_alloy_furnace_active")
 			meta:set_string("formspec",
 					"size[8,9]"..
 					"label[0,0;"..machine_name.."]"..
@@ -144,7 +144,7 @@ minetest.register_abm({
 		if recipe then
 			if was_active then
 				meta:set_string("infotext", "Furnace is empty")
-				hacky_swap_node(pos, "technic:coal_alloy_furnace")
+				technic.swap_node(pos, "technic:coal_alloy_furnace")
 				meta:set_string("formspec", formspec)
 			end
 			return
@@ -160,7 +160,7 @@ minetest.register_abm({
 
 		if fuel.time <= 0 then
 			meta:set_string("infotext", S("%s Out Of Fuel"):format(machine_name))
-			hacky_swap_node(pos, "technic:coal_alloy_furnace")
+			technic.swap_node(pos, "technic:coal_alloy_furnace")
 			meta:set_string("formspec", formspec)
 			return
 		end

technic/machines/LV/compressor.lua

@@ -125,7 +125,7 @@ minetest.register_abm({
 		end 
 		if empty or (not result) or
 		   (not inv:room_for_item("dst", result)) then
-			hacky_swap_node(pos, machine_node)
+			technic.swap_node(pos, machine_node)
 			meta:set_string("infotext", S("%s Idle"):format(machine_name))
 			meta:set_int("LV_EU_demand", 0)
 			meta:set_int("src_time", 0)
@@ -133,10 +133,10 @@ minetest.register_abm({
 		end
 
 		if eu_input < demand then
-			hacky_swap_node(pos, machine_node)
+			technic.swap_node(pos, machine_node)
 			meta:set_string("infotext", S("%s Unpowered"):format(machine_name))
 		elseif eu_input >= demand then
-			hacky_swap_node(pos, machine_node.."_active")
+			technic.swap_node(pos, machine_node.."_active")
 			meta:set_string("infotext", S("%s Active"):format(machine_name))
 
 			meta:set_int("src_time", meta:get_int("src_time") + 1)

technic/machines/LV/extractor.lua

@@ -132,7 +132,7 @@ minetest.register_abm({
 		end 
 		if inv:is_empty("src") or (not recipe) or (not result) or
 		   (not inv:room_for_item("dst", result)) then
-			hacky_swap_node(pos, machine_node)
+			technic.swap_node(pos, machine_node)
 			meta:set_string("infotext", S("%s Idle"):format(machine_name))
 			meta:set_int("LV_EU_demand", 0)
 			return
@@ -140,11 +140,11 @@ minetest.register_abm({
 
 		if eu_input < demand then
 			-- unpowered - go idle
-			hacky_swap_node(pos, machine_node)
+			technic.swap_node(pos, machine_node)
 			meta:set_string("infotext", S("%s Unpowered"):format(machine_name))
 		elseif eu_input >= demand then
 			-- Powered
-			hacky_swap_node(pos, machine_node.."_active")
+			technic.swap_node(pos, machine_node.."_active")
 			meta:set_string("infotext", S("%s Active"):format(machine_name))
 
 			meta:set_int("src_time", meta:get_int("src_time") + 1)

technic/machines/LV/geothermal.lua

@@ -99,11 +99,11 @@ minetest.register_abm({
 			S("Geothermal Generator").." ("..production_level.."%)")
 
 		if production_level > 0 and minetest.get_node(pos).name == "technic:geothermal" then
-			hacky_swap_node (pos, "technic:geothermal_active")
+			technic.swap_node (pos, "technic:geothermal_active")
 			return
 		end
 		if production_level == 0 then
-			hacky_swap_node(pos, "technic:geothermal")
+			technic.swap_node(pos, "technic:geothermal")
 			meta:set_int("LV_EU_supply", 0)
 		end
 	end

technic/machines/LV/water_mill.lua

@@ -89,12 +89,12 @@ minetest.register_abm({
 
 		if production_level > 0 and
 		   minetest.get_node(pos).name == "technic:water_mill" then
-			hacky_swap_node (pos, "technic:water_mill_active")
+			technic.swap_node (pos, "technic:water_mill_active")
 			meta:set_int("LV_EU_supply", 0)
 			return
 		end
 		if production_level == 0 then
-			hacky_swap_node(pos, "technic:water_mill")
+			technic.swap_node(pos, "technic:water_mill")
 		end
 	end
 }) 

technic/machines/MV/power_radiator.lua

@@ -43,7 +43,7 @@ end
 technic.inductive_on_punch_off = function(pos, eu_charge, swapnode)
 	local meta = minetest.get_meta(pos)
 	if meta:get_string("has_supply") ~= "" then
-		hacky_swap_node(pos, swapnode)
+		technic.swap_node(pos, swapnode)
 		meta:set_int("active", 1)
 		meta:set_int("EU_charge",eu_charge)
 		--print("-----------")
@@ -56,7 +56,7 @@ end
 
 technic.inductive_on_punch_on = function(pos, eu_charge, swapnode)
 	local meta = minetest.get_meta(pos)
-	hacky_swap_node(pos, swapnode)
+	technic.swap_node(pos, swapnode)
 	meta:set_int("active", 0)
 	meta:set_int("EU_charge",eu_charge)
 	--print("-----------")
@@ -82,7 +82,7 @@ local shutdown_inductive_appliances = function(pos)
 			local nodename = minetest.get_node(pos1).name
 			-- Swap the node and make sure it is off and unpowered
 			if string.sub(nodename, -7) == "_active" then
-				hacky_swap_node(pos1, string.sub(nodename, 1, -8))
+				technic.swap_node(pos1, string.sub(nodename, 1, -8))
 				meta1:set_int("active", 0)
 				meta1:set_int("EU_charge", 0)
 			end

technic/machines/other/constructor.lua

@@ -34,7 +34,7 @@ mk1_on = function(pos, node)
 	if node.param2==0 then pos1.z=pos1.z-1 end
 
 	if node.name == "technic:constructor_mk1_off" then
-		hacky_swap_node(pos,"technic:constructor_mk1_on")
+		technic.swap_node(pos,"technic:constructor_mk1_on")
 		nodeupdate(pos)
 		local node1=minetest.get_node(pos1)
 		deploy_node (inv,"slot1",pos1,node1,node)
@@ -43,7 +43,7 @@ end
 
 mk1_off = function(pos, node)
 	if node.name == "technic:constructor_mk1_on" then
-		hacky_swap_node(pos,"technic:constructor_mk1_off")
+		technic.swap_node(pos,"technic:constructor_mk1_off")
 		nodeupdate(pos)
 	end
 end
@@ -114,7 +114,7 @@ mk2_on = function(pos, node)
 	if node.param2==0 then pos1.z=pos1.z-1 pos2.z=pos2.z-2 end
 
 	if node.name == "technic:constructor_mk2_off" then
-		hacky_swap_node(pos,"technic:constructor_mk2_on")
+		technic.swap_node(pos,"technic:constructor_mk2_on")
 		nodeupdate(pos)
 		local node1=minetest.get_node(pos1)
 		deploy_node (inv,"slot1",pos1,node1,node)
@@ -125,7 +125,7 @@ end
 
 mk2_off = function(pos, node)
 	if node.name == "technic:constructor_mk2_on" then
-		hacky_swap_node(pos,"technic:constructor_mk2_off")
+		technic.swap_node(pos,"technic:constructor_mk2_off")
 		nodeupdate(pos)
 	end
 end
@@ -212,7 +212,7 @@ mk3_on = function(pos, node)
 	if node.param2==0 then pos1.z=pos1.z-1 pos2.z=pos2.z-2 pos3.z=pos3.z-3 pos4.z=pos4.z-4 end
 
 	if node.name == "technic:constructor_mk3_off" then
-		hacky_swap_node(pos,"technic:constructor_mk3_on")
+		technic.swap_node(pos,"technic:constructor_mk3_on")
 		nodeupdate(pos)
 		local node1=minetest.get_node(pos1)
 		deploy_node (inv,"slot1",pos1,node1,node)
@@ -227,7 +227,7 @@ end
 
 mk3_off = function(pos, node)
 	if node.name == "technic:constructor_mk3_on" then
-		hacky_swap_node(pos,"technic:constructor_mk3_off")
+		technic.swap_node(pos,"technic:constructor_mk3_off")
 		nodeupdate(pos)
 	end
 end

technic/machines/other/frames.lua

@@ -342,7 +342,7 @@ local function swap_template(pos, new)
 	local meta = minetest.get_meta(pos)
 	local saved_node = meta:get_string("saved_node")
 	meta:set_string("saved_node", "")
-	hacky_swap_node(pos, new)
+	technic.swap_node(pos, new)
 	local meta = minetest.get_meta(pos)
 	meta:set_string("saved_node", saved_node)
 end

technic/machines/register/alloy_furnace.lua

@@ -205,7 +205,7 @@ function technic.register_alloy_furnace(data)
 			end
 			if not result or
 			   not inv:room_for_item("dst", result) then
-				hacky_swap_node(pos, machine_node)
+				technic.swap_node(pos, machine_node)
 				meta:set_string("infotext", S("%s Idle"):format(machine_name))
 				meta:set_int(tier.."_EU_demand", 0)
 				return
@@ -213,11 +213,11 @@ function technic.register_alloy_furnace(data)
 
 			if eu_input < machine_demand[EU_upgrade+1] then
 				-- Unpowered - go idle
-				hacky_swap_node(pos, machine_node)
+				technic.swap_node(pos, machine_node)
 				meta:set_string("infotext", S("%s Unpowered"):format(machine_name))
 			elseif eu_input >= machine_demand[EU_upgrade+1] then
 				-- Powered
-				hacky_swap_node(pos, machine_node.."_active")
+				technic.swap_node(pos, machine_node.."_active")
 				meta:set_string("infotext", S("%s Active"):format(machine_name))
 				meta:set_int("src_time", meta:get_int("src_time") + 1)
 				if meta:get_int("src_time") == data.cook_time then

technic/machines/register/battery_box.lua

@@ -126,7 +126,7 @@ function technic.register_battery_box(data)
 			charge_count = math.max(charge_count, 0)
 			local last_count = meta:get_float("last_side_shown")
 			if charge_count ~= last_count then
-				hacky_swap_node(pos,"technic:"..ltier.."_battery_box"..charge_count)
+				technic.swap_node(pos,"technic:"..ltier.."_battery_box"..charge_count)
 				meta:set_float("last_side_shown", charge_count)
 			end
 

technic/machines/register/electric_furnace.lua

@@ -142,18 +142,18 @@ function technic.register_electric_furnace(data)
 			if not result or result.time == 0 or
 			   not inv:room_for_item("dst", result.item) then
 				meta:set_int(tier.."_EU_demand", 0)
-				hacky_swap_node(pos, machine_node)
+				technic.swap_node(pos, machine_node)
 				meta:set_string("infotext", S("%s Idle"):format(machine_name))
 				return
 			end
 
 			if eu_input < machine_demand[EU_upgrade+1] then
 				-- Unpowered - go idle
-				hacky_swap_node(pos, machine_node)
+				technic.swap_node(pos, machine_node)
 				meta:set_string("infotext", S("%s Unpowered"):format(machine_name))
 			elseif eu_input >= machine_demand[EU_upgrade+1] then
 				-- Powered
-				hacky_swap_node(pos, machine_node.."_active")
+				technic.swap_node(pos, machine_node.."_active")
 				meta:set_string("infotext", S("%s Active"):format(machine_name))
 				technic.smelt_item(meta, result, data.speed)
 

technic/machines/register/generator.lua

@@ -99,7 +99,7 @@ function technic.register_generator(data)
 					fuel = minetest.get_craft_result({method = "fuel", width = 1, items = fuellist})
 					if not fuel or fuel.time == 0 then
 						meta:set_string("infotext", S("%s Out Of Fuel"):format(desc))
-						hacky_swap_node(pos, "technic:"..ltier.."_generator")
+						technic.swap_node(pos, "technic:"..ltier.."_generator")
 						return
 					end
 					meta:set_int("burn_time", fuel.time)
@@ -107,10 +107,10 @@ function technic.register_generator(data)
 					local stack = inv:get_stack("src", 1)
 					stack:take_item()
 					inv:set_stack("src", 1, stack)
-					hacky_swap_node(pos, "technic:"..ltier.."_generator_active")
+					technic.swap_node(pos, "technic:"..ltier.."_generator_active")
 					meta:set_int(tier.."_EU_supply", data.supply)
 				else
-					hacky_swap_node(pos, "technic:"..ltier.."_generator")
+					technic.swap_node(pos, "technic:"..ltier.."_generator")
 					meta:set_int(tier.."_EU_supply", 0)
 				end
 			end

technic/machines/register/grinder.lua

@@ -120,7 +120,7 @@ function technic.register_grinder(data)
 			local result = technic.get_grinder_recipe(inv:get_stack("src", 1))
 
 			if not result then
-				hacky_swap_node(pos, machine_node)
+				technic.swap_node(pos, machine_node)
 				meta:set_string("infotext", S("%s Idle"):format(machine_name))
 				meta:set_int(tier.."_EU_demand", 0)
 				return
@@ -128,11 +128,11 @@ function technic.register_grinder(data)
 		
 			if eu_input < machine_demand[EU_upgrade+1] then
 				-- Unpowered - go idle
-				hacky_swap_node(pos, machine_node)
+				technic.swap_node(pos, machine_node)
 				meta:set_string("infotext", S("%s Unpowered"):format(machine_name))
 			elseif eu_input >= machine_demand[EU_upgrade+1] then
 				-- Powered	
-				hacky_swap_node(pos, machine_node.."_active")
+				technic.swap_node(pos, machine_node.."_active")
 				meta:set_string("infotext", S("%s Active"):format(machine_name))
 
 				meta:set_int("src_time", meta:get_int("src_time") + 1)

technic/tools/sonic_screwdriver.lua

@@ -44,12 +44,8 @@ minetest.register_tool("technic:sonic_screwdriver", {
 			if minetest.is_protected(pos, user:get_player_name()) then
 				minetest.record_protection_violation(pos, user:get_player_name())
 			else
-				local meta = minetest.get_meta(pos)
-				local meta0 = meta:to_table()
 				node.param2 = p
-				minetest.set_node(pos, node)
-				meta = minetest.get_meta(pos)
-				meta:from_table(meta0)
+				minetest.swap_node(pos, node)
 
 				meta1.charge = meta1.charge - 100
 				itemstack:set_metadata(set_item_meta(meta1))
@@ -68,3 +64,4 @@ minetest.register_craft({
 		{"technic:stainless_steel_ingot"}
 	}
 })
+