From 6154a04c00d7650664b78e2bca37631ae3778411 Mon Sep 17 00:00:00 2001
From: David Leal <halfpacho@gmail.com>
Date: Wed, 24 Jun 2020 21:14:04 +0200
Subject: [PATCH] Remove node_ownership support, cleanup (#560)

---
 technic/machines/HV/nuclear_reactor.lua |  658 ++++++++++++++++++++++++++++++++++-------------------------
 1 files changed, 379 insertions(+), 279 deletions(-)

diff --git a/technic/machines/HV/nuclear_reactor.lua b/technic/machines/HV/nuclear_reactor.lua
index b240a9d..c6ed4df 100644
--- a/technic/machines/HV/nuclear_reactor.lua
+++ b/technic/machines/HV/nuclear_reactor.lua
@@ -1,206 +1,428 @@
--- The enriched uranium rod driven EU generator.
--- A very large and advanced machine providing vast amounts of power.
--- Very efficient but also expensive to run as it needs uranium. (10000EU 86400 ticks (one week))
--- Provides HV EUs that can be down converted as needed.
---
--- The nuclear reactor core needs water and a protective shield to work.
--- This is checked now and then and if the machine is tampered with... BOOM!
+--[[
+ The enriched uranium rod driven EU generator.
+A very large and advanced machine providing vast amounts of power.
+Very efficient but also expensive to run as it needs uranium.
+Provides 10000 HV EUs for one week (only counted when loaded).
 
-local burn_ticks   = 7 * 24 * 60 * 60       -- (seconds).
-local power_supply = 100000                 -- EUs
-local fuel_type    = "technic:uranium_fuel" -- The reactor burns this stuff
+The nuclear reactor core requires a casing of water and a protective
+shield to work.  This is checked now and then and if the casing is not
+intact the reactor will melt down!
+--]]
+
+local burn_ticks = 7 * 24 * 60 * 60  -- Seconds
+local power_supply = 100000  -- EUs
+local fuel_type = "technic:uranium_fuel"  -- The reactor burns this
+local digiline_meltdown = technic.config:get_bool("enable_nuclear_reactor_digiline_selfdestruct")
+local digiline_remote_path = minetest.get_modpath("digiline_remote")
 
 local S = technic.getter
 
--- FIXME: recipe must make more sense like a rod recepticle, steam chamber, HV generator?
+local reactor_desc = S("@1 Nuclear Reactor Core", S("HV"))
+local cable_entry = "^technic_cable_connection_overlay.png"
+
+-- FIXME: Recipe should make more sense like a rod recepticle, steam chamber, HV generator?
 minetest.register_craft({
 	output = 'technic:hv_nuclear_reactor_core',
 	recipe = {
 		{'technic:carbon_plate',          'default:obsidian_glass', 'technic:carbon_plate'},
 		{'technic:composite_plate',       'technic:machine_casing', 'technic:composite_plate'},
-		{'technic:stainless_steel_ingot',      'technic:hv_cable0', 'technic:stainless_steel_ingot'},
+		{'technic:stainless_steel_ingot', 'technic:hv_cable',       'technic:stainless_steel_ingot'},
 	}
 })
 
-local generator_formspec =
-	"invsize[8,9;]"..
+local function make_reactor_formspec(meta)
+	local f = "size[8,9]"..
 	"label[0,0;"..S("Nuclear Reactor Rod Compartment").."]"..
 	"list[current_name;src;2,1;3,2;]"..
-	"list[current_player;main;0,5;8,4;]"
+	"list[current_player;main;0,5;8,4;]"..
+	"listring[]"..
+	"button[5.5,1.5;2,1;start;Start]"..
+	"checkbox[5.5,2.5;autostart;automatic Start;"..meta:get_string("autostart").."]"
+	if not digiline_remote_path then
+		return f
+	end
+	local digiline_enabled = meta:get_string("enable_digiline")
+	f = f.."checkbox[0.5,2.8;enable_digiline;Enable Digiline;"..digiline_enabled.."]"
+	if digiline_enabled ~= "true" then
+		return f
+	end
+	return f..
+		"button_exit[4.6,3.69;2,1;save;Save]"..
+		"field[1,4;4,1;remote_channel;Digiline Remote Channel;${remote_channel}]"
+end
 
--- "Boxy sphere"
-local nodebox = {
-	{ -0.353, -0.353, -0.353, 0.353, 0.353, 0.353 }, -- Box
-	{ -0.495, -0.064, -0.064, 0.495, 0.064, 0.064 }, -- Circle +-x
-	{ -0.483, -0.128, -0.128, 0.483, 0.128, 0.128 },
-	{ -0.462, -0.191, -0.191, 0.462, 0.191, 0.191 },
-	{ -0.433, -0.249, -0.249, 0.433, 0.249, 0.249 },
-	{ -0.397, -0.303, -0.303, 0.397, 0.303, 0.303 },
-	{ -0.305, -0.396, -0.305, 0.305, 0.396, 0.305 }, -- Circle +-y
-	{ -0.250, -0.432, -0.250, 0.250, 0.432, 0.250 },
-	{ -0.191, -0.461, -0.191, 0.191, 0.461, 0.191 },
-	{ -0.130, -0.482, -0.130, 0.130, 0.482, 0.130 },
-	{ -0.066, -0.495, -0.066, 0.066, 0.495, 0.066 },
-	{ -0.064, -0.064, -0.495, 0.064, 0.064, 0.495 }, -- Circle +-z
-	{ -0.128, -0.128, -0.483, 0.128, 0.128, 0.483 },
-	{ -0.191, -0.191, -0.462, 0.191, 0.191, 0.462 },
-	{ -0.249, -0.249, -0.433, 0.249, 0.249, 0.433 },
-	{ -0.303, -0.303, -0.397, 0.303, 0.303, 0.397 },
-}
+local SS_OFF = 0
+local SS_DANGER = 1
+local SS_CLEAR = 2
 
-local check_reactor_structure = function(pos)
-	-- The reactor consists of a 9x9x9 cube structure
-	-- A cross section through the middle:
-	--  CCCC CCCC
-	--  CBBB BBBC
-	--  CBSS SSBC
-	--  CBSWWWSBC
-	--  CBSW#WSBC
-	--  CBSW|WSBC
-	--  CBSS|SSBC
-	--  CBBB|BBBC
-	--  CCCC|CCCC
-	--  C = Concrete, B = Blast resistant concrete, S = Stainless Steel,
-	--  W = water node, # = reactor core, | = HV cable
-	--  The man-hole and the HV cable is only in the middle
-	--  The man-hole is optional
+local reactor_siren = {}
+local function siren_set_state(pos, state)
+	local hpos = minetest.hash_node_position(pos)
+	local siren = reactor_siren[hpos]
+	if not siren then
+		if state == SS_OFF then return end
+		siren = {state=SS_OFF}
+		reactor_siren[hpos] = siren
+	end
+	if state == SS_DANGER and siren.state ~= SS_DANGER then
+		if siren.handle then minetest.sound_stop(siren.handle) end
+		siren.handle = minetest.sound_play("technic_hv_nuclear_reactor_siren_danger_loop",
+				{pos=pos, gain=1.5, loop=true, max_hear_distance=48})
+		siren.state = SS_DANGER
+	elseif state == SS_CLEAR then
+		if siren.handle then minetest.sound_stop(siren.handle) end
+		local clear_handle = minetest.sound_play("technic_hv_nuclear_reactor_siren_clear",
+				{pos=pos, gain=1.5, loop=false, max_hear_distance=48})
+		siren.handle = clear_handle
+		siren.state = SS_CLEAR
+		minetest.after(10, function()
+			if siren.handle ~= clear_handle then return end
+			minetest.sound_stop(clear_handle)
+			if reactor_siren[hpos] == siren then
+				reactor_siren[hpos] = nil
+			end
+		end)
+	elseif state == SS_OFF and siren.state ~= SS_OFF then
+		if siren.handle then minetest.sound_stop(siren.handle) end
+		reactor_siren[hpos] = nil
+	end
+end
 
+local function siren_danger(pos, meta)
+	meta:set_int("siren", 1)
+	siren_set_state(pos, SS_DANGER)
+end
+
+local function siren_clear(pos, meta)
+	if meta:get_int("siren") ~= 0 then
+		siren_set_state(pos, SS_CLEAR)
+		meta:set_int("siren", 0)
+	end
+end
+
+--[[
+The standard reactor structure consists of a 9x9x9 cube.  A cross
+section through the middle:
+
+	CCCC CCCC
+	CBBB BBBC
+	CBLL LLBC
+	CBLWWWLBC
+	CBLW#WLBC
+	CBLW|WLBC
+	CBLL|LLBC
+	CBBB|BBBC
+	CCCC|CCCC
+	C = Concrete, B = Blast-resistant concrete, L = Lead,
+	W = water node, # = reactor core, | = HV cable
+
+The man-hole is optional (but necessary for refueling).
+
+For the reactor to operate and not melt down, it insists on the inner
+7x7x7 portion (from the core out to the blast-resistant concrete)
+being intact.  Intactness only depends on the number of nodes of the
+right type in each layer.  The water layer must have water in all but
+at most one node; the steel and blast-resistant concrete layers must
+have the right material in all but at most two nodes.  The permitted
+gaps are meant for the cable and man-hole, but can actually be anywhere
+and contain anything.  For the reactor to be useful, a cable must
+connect to the core, but it can go in any direction.
+
+The outer concrete layer of the standard structure is not required
+for the reactor to operate.  It is noted here because it used to
+be mandatory, and for historical reasons (that it predates the
+implementation of radiation) it needs to continue being adequate
+shielding of legacy reactors.  If it ever ceases to be adequate
+shielding for new reactors, legacy ones should be grandfathered.
+
+For legacy reasons, if the reactor has a stainless steel layer instead
+of a lead layer it will be converted to a lead layer.
+--]]
+local function reactor_structure_badness(pos)
 	local vm = VoxelManip()
-	local pos1 = vector.subtract(pos, 4)
-	local pos2 = vector.add(pos, 4)
+	local pos1 = vector.subtract(pos, 3)
+	local pos2 = vector.add(pos, 3)
 	local MinEdge, MaxEdge = vm:read_from_map(pos1, pos2)
 	local data = vm:get_data()
 	local area = VoxelArea:new({MinEdge=MinEdge, MaxEdge=MaxEdge})
 
-	local c_concrete = minetest.get_content_id("technic:concrete")
 	local c_blast_concrete = minetest.get_content_id("technic:blast_resistant_concrete")
-	local c_stainless_steel = minetest.get_content_id("technic:stainless_steel_block")
+	local c_lead = minetest.get_content_id("technic:lead_block")
+	local c_steel = minetest.get_content_id("technic:stainless_steel_block")
 	local c_water_source = minetest.get_content_id("default:water_source")
 	local c_water_flowing = minetest.get_content_id("default:water_flowing")
 
-	local concretelayer, blastlayer, steellayer, waterlayer = 0, 0, 0, 0
+	local blast_layer, steel_layer, lead_layer, water_layer = 0, 0, 0, 0
 
 	for z = pos1.z, pos2.z do
 	for y = pos1.y, pos2.y do
 	for x = pos1.x, pos2.x do
-		-- If the position is in the outer layer
+		local cid = data[area:index(x, y, z)]
 		if x == pos1.x or x == pos2.x or
 		   y == pos1.y or y == pos2.y or
 		   z == pos1.z or z == pos2.z then
-			if data[area:index(x, y, z)] == c_concrete then
-				concretelayer = concretelayer + 1
+			if cid == c_blast_concrete then
+				blast_layer = blast_layer + 1
 			end
 		elseif x == pos1.x+1 or x == pos2.x-1 or
-		   y == pos1.y+1 or y == pos2.y-1 or
-		   z == pos1.z+1 or z == pos2.z-1 then
-			if data[area:index(x, y, z)] == c_blast_concrete then
-				blastlayer = blastlayer + 1
+		       y == pos1.y+1 or y == pos2.y-1 or
+		       z == pos1.z+1 or z == pos2.z-1 then
+			if cid == c_lead then
+				lead_layer = lead_layer + 1
+			elseif cid == c_steel then
+				steel_layer = steel_layer + 1
 			end
 		elseif x == pos1.x+2 or x == pos2.x-2 or
-		   y == pos1.y+2 or y == pos2.y-2 or
-		   z == pos1.z+2 or z == pos2.z-2 then
-			if data[area:index(x, y, z)] == c_stainless_steel then
-				steellayer = steellayer + 1
-			end
-		elseif x == pos1.x+3 or x == pos2.x-3 or
-		   y == pos1.y+3 or y == pos2.y-3 or
-		   z == pos1.z+3 or z == pos2.z-3 then
-		   	local cid = data[area:index(x, y, z)]
+		       y == pos1.y+2 or y == pos2.y-2 or
+		       z == pos1.z+2 or z == pos2.z-2 then
 			if cid == c_water_source or cid == c_water_flowing then
-				waterlayer = waterlayer + 1
+				water_layer = water_layer + 1
 			end
 		end
 	end
 	end
 	end
-	if waterlayer >= 25 and
-	   steellayer >= 96 and
-	   blastlayer >= 216 and
-	   concretelayer >= 384 then
-		return true
-	end
-end
 
-local explode_reactor = function(pos)
-	print("A reactor exploded at "..minetest.pos_to_string(pos))
-	minetest.set_node(pos, {name="technic:corium_source"})
-end
-
-local run = function(pos, node)
-	local meta = minetest.get_meta(pos)
-	local machine_name = S("Nuclear %s Generator Core"):format("HV")
-	local burn_time = meta:get_int("burn_time") or 0
-
-	if burn_time >= burn_ticks or burn_time == 0 then
-		local inv = meta:get_inventory()
-		if not inv:is_empty("src") then 
-			local srclist = inv:get_list("src")
-			local correct_fuel_count = 0
-			for _, srcstack in pairs(srclist) do
-				if srcstack then
-					if  srcstack:get_name() == fuel_type then
-						correct_fuel_count = correct_fuel_count + 1
-					end
+	if steel_layer >= 96 then
+		for z = pos1.z+1, pos2.z-1 do
+		for y = pos1.y+1, pos2.y-1 do
+		for x = pos1.x+1, pos2.x-1 do
+			local vi = area:index(x, y, z)
+			if x == pos1.x+1 or x == pos2.x-1 or
+			   y == pos1.y+1 or y == pos2.y-1 or
+			   z == pos1.z+1 or z == pos2.z-1 then
+				if data[vi] == c_steel then
+					data[vi] = c_lead
 				end
 			end
-			-- Check that the reactor is complete as well
-			-- as the correct number of correct fuel
-			if correct_fuel_count == 6 and
-			   check_reactor_structure(pos) then
-				meta:set_int("burn_time", 1)
-				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()
-					inv:set_stack("src", idx, srcstack)
-				end
+		end
+		end
+		end
+		vm:set_data(data)
+		vm:write_to_map()
+		lead_layer = steel_layer
+	end
+
+	if water_layer > 25 then water_layer = 25 end
+	if lead_layer > 96 then lead_layer = 96 end
+	if blast_layer > 216 then blast_layer = 216 end
+	return (25 - water_layer) + (96 - lead_layer) + (216 - blast_layer)
+end
+
+
+local function melt_down_reactor(pos)
+	minetest.log("action", "A reactor melted down at "..minetest.pos_to_string(pos))
+	minetest.set_node(pos, {name = "technic:corium_source"})
+end
+
+
+local function start_reactor(pos, meta)
+	if minetest.get_node(pos).name ~= "technic:hv_nuclear_reactor_core" then
+		return false
+	end
+	local inv = meta:get_inventory()
+	if inv:is_empty("src") then
+		return false
+	end
+	local src_list = inv:get_list("src")
+	local correct_fuel_count = 0
+	for _, src_stack in pairs(src_list) do
+		if src_stack and src_stack:get_name() == fuel_type then
+			correct_fuel_count = correct_fuel_count + 1
+		end
+	end
+	-- Check that the reactor is complete and has the correct fuel
+	if correct_fuel_count ~= 6 or reactor_structure_badness(pos) ~= 0 then
+		return false
+	end
+	meta:set_int("burn_time", 1)
+	technic.swap_node(pos, "technic:hv_nuclear_reactor_core_active")
+	meta:set_int("HV_EU_supply", power_supply)
+	for idx, src_stack in pairs(src_list) do
+		src_stack:take_item()
+		inv:set_stack("src", idx, src_stack)
+	end
+	return true
+end
+
+
+minetest.register_abm({
+	label = "Machines: reactor melt-down check",
+	nodenames = {"technic:hv_nuclear_reactor_core_active"},
+	interval = 4,
+	chance = 1,
+	action = function (pos, node)
+		local meta = minetest.get_meta(pos)
+		local badness = reactor_structure_badness(pos)
+		local accum_badness = meta:get_int("structure_accumulated_badness")
+		if badness == 0 then
+			if accum_badness ~= 0 then
+				meta:set_int("structure_accumulated_badness", math.max(accum_badness - 4, 0))
+				siren_clear(pos, meta)
+			end
+		else
+			siren_danger(pos, meta)
+			accum_badness = accum_badness + badness
+			if accum_badness >= 25 then
+				melt_down_reactor(pos)
+			else
+				meta:set_int("structure_accumulated_badness", accum_badness)
+			end
+		end
+	end,
+})
+
+local function run(pos, node)
+	local meta = minetest.get_meta(pos)
+	local burn_time = meta:get_int("burn_time") or 0
+	if burn_time >= burn_ticks or burn_time == 0 then
+		if digiline_remote_path and meta:get_int("HV_EU_supply") == power_supply then
+			digiline_remote.send_to_node(pos, meta:get_string("remote_channel"),
+					"fuel used", 6, true)
+		end
+		if meta:get_string("autostart") == "true" then
+			if start_reactor(pos, meta) then
 				return
 			end
 		end
 		meta:set_int("HV_EU_supply", 0)
 		meta:set_int("burn_time", 0)
-		meta:set_string("infotext", S("%s Idle"):format(machine_name))
+		meta:set_string("infotext", S("%s Idle"):format(reactor_desc))
 		technic.swap_node(pos, "technic:hv_nuclear_reactor_core")
+		meta:set_int("structure_accumulated_badness", 0)
+		siren_clear(pos, meta)
 	elseif burn_time > 0 then
-		if not check_reactor_structure(pos) then
-			explode_reactor(pos)
-		end
 		burn_time = burn_time + 1
 		meta:set_int("burn_time", burn_time)
 		local percent = math.floor(burn_time / burn_ticks * 100)
-		meta:set_string("infotext", machine_name.." ("..percent.."%)")
+		meta:set_string("infotext", reactor_desc.." ("..percent.."%)")
 		meta:set_int("HV_EU_supply", power_supply)
 	end
 end
 
+local nuclear_reactor_receive_fields = function(pos, formname, fields, sender)
+	local player_name = sender:get_player_name()
+	if minetest.is_protected(pos, player_name) then
+		minetest.chat_send_player(player_name, "You are not allowed to edit this!")
+		minetest.record_protection_violation(pos, player_name)
+		return
+	end
+	local meta = minetest.get_meta(pos)
+	local update_formspec = false
+	if fields.remote_channel then
+		meta:set_string("remote_channel", fields.remote_channel)
+	end
+	if fields.start then
+		local b = start_reactor(pos, meta)
+		if b then
+			minetest.chat_send_player(player_name, "Start successful")
+		else
+			minetest.chat_send_player(player_name, "Error")
+		end
+	end
+	if fields.autostart then
+		meta:set_string("autostart", fields.autostart)
+		update_formspec = true
+	end
+	if fields.enable_digiline then
+		meta:set_string("enable_digiline", fields.enable_digiline)
+		update_formspec = true
+	end
+	if update_formspec then
+		meta:set_string("formspec", make_reactor_formspec(meta))
+	end
+end
+
+local digiline_remote_def = function(pos, channel, msg)
+	local meta = minetest.get_meta(pos)
+	if meta:get_string("enable_digiline") ~= "true" or
+			channel ~= meta:get_string("remote_channel") then
+		return
+	end
+	-- Convert string messages to tables:
+	local msgt = type(msg)
+	if msgt == "string" then
+		local smsg = msg:lower()
+		msg = {}
+		if smsg == "get" then
+			msg.command = "get"
+		elseif smsg:sub(1, 13) == "self_destruct" then
+			msg.command = "self_destruct"
+			msg.timer = tonumber(smsg:sub(15)) or 0
+		elseif smsg == "start" then
+			msg.command = "start"
+		end
+	elseif msgt ~= "table" then
+		return
+	end
+
+	if msg.command == "get" then
+		local inv = meta:get_inventory()
+		local invtable = {}
+		for i = 1, 6 do
+			local stack = inv:get_stack("src", i)
+			if stack:is_empty() then
+				invtable[i] = 0
+			elseif stack:get_name() == fuel_type then
+				invtable[i] = stack:get_count()
+			else
+				invtable[i] = -stack:get_count()
+			end
+		end
+		digiline_remote.send_to_node(pos, channel, {
+			burn_time = meta:get_int("burn_time"),
+			enabled   = meta:get_int("HV_EU_supply") == power_supply,
+			siren     = meta:get_int("siren") == 1,
+			structure_accumulated_badness = meta:get_int("structure_accumulated_badness"),
+			rods = invtable
+		}, 6, true)
+	elseif digiline_meltdown and msg.command == "self_destruct" and
+			minetest.get_node(pos).name == "technic:hv_nuclear_reactor_core_active" then
+		if msg.timer ~= 0 and type(msg.timer) == "number" then
+			siren_danger(pos, meta)
+			minetest.after(msg.timer, melt_down_reactor, pos)
+		else
+			melt_down_reactor(pos)
+		end
+	elseif msg.command == "start" then
+		local b = start_reactor(pos, meta)
+		if b then
+			digiline_remote.send_to_node(pos, channel, "Start successful", 6, true)
+		else
+			digiline_remote.send_to_node(pos, channel, "Error", 6, true)
+		end
+	end
+end
+
 minetest.register_node("technic:hv_nuclear_reactor_core", {
-	description = S("Nuclear %s Generator Core"):format("HV"),
-	tiles = {"technic_hv_nuclear_reactor_core.png", "technic_hv_nuclear_reactor_core.png",
-	         "technic_hv_nuclear_reactor_core.png", "technic_hv_nuclear_reactor_core.png",
-	         "technic_hv_nuclear_reactor_core.png", "technic_hv_nuclear_reactor_core.png"},
-	groups = {snappy=2, choppy=2, oddly_breakable_by_hand=2, technic_machine=1},
+	description = reactor_desc,
+	tiles = {
+		"technic_hv_nuclear_reactor_core.png",
+		"technic_hv_nuclear_reactor_core.png"..cable_entry
+	},
+	drawtype = "mesh",
+	mesh = "technic_reactor.obj",
+	groups = {cracky = 1, technic_machine = 1, technic_hv = 1, digiline_remote_receive = 1},
 	legacy_facedir_simple = true,
 	sounds = default.node_sound_wood_defaults(),
-	drawtype="nodebox",
 	paramtype = "light",
+	paramtype2 = "facedir",
 	stack_max = 1,
-	node_box = {
-		type = "fixed",
-		fixed = nodebox
-	},
+	on_receive_fields = nuclear_reactor_receive_fields,
 	on_construct = function(pos)
 		local meta = minetest.get_meta(pos)
-		meta:set_string("infotext", S("Nuclear %s Generator Core"):format("HV"))
-		meta:set_int("HV_EU_supply", 0)
-		-- Signal to the switching station that this device burns some
-		-- sort of fuel and needs special handling
-		meta:set_int("HV_EU_from_fuel", 1)
-		meta:set_int("burn_time", 0)
-		meta:set_string("formspec", generator_formspec)
+		meta:set_string("infotext", reactor_desc)
+		meta:set_string("formspec", make_reactor_formspec(meta))
+		if digiline_remote_path then
+			meta:set_string("remote_channel",
+					"nucelear_reactor"..minetest.pos_to_string(pos))
+		end
 		local inv = meta:get_inventory()
 		inv:set_size("src", 6)
-	end,	
+	end,
+	_on_digiline_remote_receive = digiline_remote_def,
 	can_dig = technic.machine_can_dig,
+	on_destruct = function(pos) siren_set_state(pos, SS_OFF) end,
 	allow_metadata_inventory_put = technic.machine_inventory_put,
 	allow_metadata_inventory_take = technic.machine_inventory_take,
 	allow_metadata_inventory_move = technic.machine_inventory_move,
@@ -208,177 +430,55 @@
 })
 
 minetest.register_node("technic:hv_nuclear_reactor_core_active", {
-	tiles = {"technic_hv_nuclear_reactor_core.png", "technic_hv_nuclear_reactor_core.png",
-	         "technic_hv_nuclear_reactor_core.png", "technic_hv_nuclear_reactor_core.png",
-		 "technic_hv_nuclear_reactor_core.png", "technic_hv_nuclear_reactor_core.png"},
-	groups = {snappy=2, choppy=2, oddly_breakable_by_hand=2, technic_machine=1, radioactive=2, not_in_creative_inventory=1},
+	tiles = {
+		"technic_hv_nuclear_reactor_core.png",
+		"technic_hv_nuclear_reactor_core.png"..cable_entry
+	},
+	drawtype = "mesh",
+	mesh = "technic_reactor.obj",
+	groups = {cracky = 1, technic_machine = 1, technic_hv = 1, radioactive = 4,
+		not_in_creative_inventory = 1, digiline_remote_receive = 1},
 	legacy_facedir_simple = true,
 	sounds = default.node_sound_wood_defaults(),
-	drop="technic:hv_nuclear_reactor_core",
-	drawtype="nodebox",
-	light_source = 15,
+	drop = "technic:hv_nuclear_reactor_core",
+	light_source = 14,
 	paramtype = "light",
-	node_box = {
-		type = "fixed",
-		fixed = nodebox
-	},
+	paramtype2 = "facedir",
+	on_receive_fields = nuclear_reactor_receive_fields,
+	_on_digiline_remote_receive = digiline_remote_def,
 	can_dig = technic.machine_can_dig,
+	after_dig_node = melt_down_reactor,
+	on_destruct = function(pos) siren_set_state(pos, SS_OFF) end,
 	allow_metadata_inventory_put = technic.machine_inventory_put,
 	allow_metadata_inventory_take = technic.machine_inventory_take,
 	allow_metadata_inventory_move = technic.machine_inventory_move,
 	technic_run = run,
 	technic_on_disable = function(pos, node)
 		local timer = minetest.get_node_timer(pos)
-        	timer:start(1)
+		timer:start(1)
         end,
 	on_timer = function(pos, node)
 		local meta = minetest.get_meta(pos)
-		
+
 		-- Connected back?
-		if meta:get_int("HV_EU_timeout") > 0 then return end	
-		
+		if meta:get_int("HV_EU_timeout") > 0 then return false end
+
 		local burn_time = meta:get_int("burn_time") or 0
 
 		if burn_time >= burn_ticks or burn_time == 0 then
 			meta:set_int("HV_EU_supply", 0)
 			meta:set_int("burn_time", 0)
 			technic.swap_node(pos, "technic:hv_nuclear_reactor_core")
-			return
+			meta:set_int("structure_accumulated_badness", 0)
+			siren_clear(pos, meta)
+			return false
 		end
-		
+
 		meta:set_int("burn_time", burn_time + 1)
-		local timer = minetest.get_node_timer(pos)
-        	timer:start(1)
+		return true
 	end,
 })
 
 technic.register_machine("HV", "technic:hv_nuclear_reactor_core",        technic.producer)
 technic.register_machine("HV", "technic:hv_nuclear_reactor_core_active", technic.producer)
 
--- radioactive materials that can result from destroying a reactor
-
-minetest.register_abm({
-	nodenames = {"group:radioactive"},
-	interval = 1,
-	chance = 1,
-	action = function (pos, node)
-		for r = 1, minetest.registered_nodes[node.name].groups.radioactive do
-			for _, o in ipairs(minetest.get_objects_inside_radius(pos, r*2)) do
-				if o:is_player() then
-					o:set_hp(math.max(o:get_hp() - 1, 0))
-				end
-			end
-		end
-	end,
-})
-
-for _, state in ipairs({ "flowing", "source" }) do
-	minetest.register_node("technic:corium_"..state, {
-		description = S(state == "source" and "Corium Source" or "Flowing Corium"),
-		drawtype = (state == "source" and "liquid" or "flowingliquid"),
-		[state == "source" and "tiles" or "special_tiles"] = {{
-			name = "technic_corium_"..state.."_animated.png",
-			animation = {
-				type = "vertical_frames",
-				aspect_w = 16,
-				aspect_h = 16,
-				length = 3.0,
-			},
-		}},
-		paramtype = "light",
-		paramtype2 = (state == "flowing" and "flowingliquid" or nil),
-		light_source = (state == "source" and 8 or 5),
-		walkable = false,
-		pointable = false,
-		diggable = false,
-		buildable_to = true,
-		drop = "",
-		drowning = 1,
-		liquidtype = state,
-		liquid_alternative_flowing = "technic:corium_flowing",
-		liquid_alternative_source = "technic:corium_source",
-		liquid_viscosity = LAVA_VISC,
-		liquid_renewable = false,
-		damage_per_second = 6,
-		post_effect_color = { a=192, r=80, g=160, b=80 },
-		groups = {
-			liquid = 2,
-			hot = 3,
-			igniter = 1,
-			radioactive = (state == "source" and 3 or 2),
-			not_in_creative_inventory = (state == "flowing" and 1 or nil),
-		},
-	})
-end
-
-if bucket and bucket.register_liquid then
-	bucket.register_liquid(
-		"technic:corium_source",
-		"technic:corium_flowing",
-		"technic:bucket_corium",
-		"technic_bucket_corium.png",
-		"Corium Bucket"
-	)
-end
-
-minetest.register_node("technic:chernobylite_block", {
-        description = S("Chernobylite Block"),
-	tiles = { "technic_chernobylite_block.png" },
-	is_ground_content = true,
-	groups = { cracky=1, radioactive=1, level=2 },
-	sounds = default.node_sound_stone_defaults(),
-	light_source = 2,
-
-})
-
-minetest.register_abm({
-	nodenames = {"group:water"},
-	neighbors = {"technic:corium_source"},
-	interval = 1,
-	chance = 1,
-	action = function (pos, node)
-		minetest.remove_node(pos)
-	end,
-})
-
-minetest.register_abm({
-	nodenames = {"technic:corium_flowing"},
-	neighbors = {"group:water"},
-	interval = 1,
-	chance = 1,
-	action = function (pos, node)
-		minetest.set_node(pos, {name="technic:chernobylite_block"})
-	end,
-})
-
-local griefing = technic.config:get_bool("enable_corium_griefing")
-
-minetest.register_abm({
-	nodenames = {"technic:corium_flowing"},
-	interval = 5,
-	chance = (griefing and 10 or 1),
-	action = function (pos, node)
-		minetest.set_node(pos, {name="technic:chernobylite_block"})
-	end,
-})
-
-if griefing then
-	minetest.register_abm({
-		nodenames = { "technic:corium_source", "technic:corium_flowing" },
-		interval = 4,
-		chance = 4,
-		action = function (pos, node)
-			for _, offset in ipairs({
-				vector.new(1,0,0),
-				vector.new(-1,0,0),
-				vector.new(0,0,1),
-				vector.new(0,0,-1),
-				vector.new(0,-1,0),
-			}) do
-				if math.random(8) == 1 then
-					minetest.dig_node(vector.add(pos, offset))
-				end
-			end
-		end,
-	})
-end

--
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