More work on fusion reactor..

elepower_machines/machines/electrolyzer.lua

@@ -9,7 +9,7 @@ elepm.electrolyzer_recipes = {
 		time = 20
 	},
 	{
-		recipe = "elepower_nuclear:heavy_water 1000",
+		recipe = "elepower_nuclear:heavy_water_source 1000",
 		output = {
 			"elepower_nuclear:deuterium 600",
 			"elepower_dynamics:oxygen 400",
@@ -167,7 +167,7 @@ ele.register_machine("elepower_machines:electrolyzer", {
 	on_timer = electrolyzer_timer,
 	fluid_buffers = {
 		input = {
-			accepts = {"default:water_source", "elepower_nuclear:heavy_water",
+			accepts = {"default:water_source", "elepower_nuclear:heavy_water_source",
 				"group:biomass", "group:electrolysis_recipe"},
 			drainable = false,
 			capacity = 8000,

elepower_nuclear/fluids.lua

@@ -6,12 +6,6 @@
 -- These nodes are used as "fluids"
 -- They do not actually exist as nodes that should be placed.
 
-minetest.register_node("elepower_nuclear:heavy_water", {
-	description = "Heavy Water",
-	groups      = {not_in_creative_inventory = 1, oddly_breakable_by_hand = 1, water = 1},
-	tiles       = {"elenuclear_heavy_water.png"},
-})
-
 minetest.register_node("elepower_nuclear:tritium", {
 	description = "Tritium Gas",
 	groups      = {not_in_creative_inventory = 1, oddly_breakable_by_hand = 1, gas = 1},
@@ -30,13 +24,112 @@ minetest.register_node("elepower_nuclear:helium", {
 	tiles       = {"elenuclear_helium.png"},
 })
 
+minetest.register_node("elepower_nuclear:helium_plasma", {
+	description = "Helium Plasma\nSuperheated",
+	groups      = {not_in_creative_inventory = 1, oddly_breakable_by_hand = 1, gas = 1},
+	tiles       = {"elenuclear_helium_plasma.png"},
+})
+
 ele.register_gas(nil, "Tritium", "elepower_nuclear:tritium")
 ele.register_gas(nil, "Deuterium", "elepower_nuclear:deuterium")
 ele.register_gas(nil, "Helium", "elepower_nuclear:helium")
+ele.register_gas(nil, "Helium Plasma", "elepower_nuclear:helium_plasma")
+
+-------------
+-- Liquids --
+-------------
+
+-- Heavy Water
+minetest.register_node("elepower_nuclear:heavy_water_source", {
+	description = "Heavy Water Source",
+	drawtype = "liquid",
+	tiles = {
+		{
+			name = "elenuclear_heavy_water_source_animated.png",
+			animation = {
+				type = "vertical_frames",
+				aspect_w = 16,
+				aspect_h = 16,
+				length = 2.0,
+			},
+		},
+	},
+	special_tiles = {
+		{
+			name = "elenuclear_heavy_water_source_animated.png",
+			animation = {
+				type = "vertical_frames",
+				aspect_w = 16,
+				aspect_h = 16,
+				length = 2.0,
+			},
+			backface_culling = false,
+		},
+	},
+	alpha = 160,
+	paramtype = "light",
+	walkable = false,
+	pointable = false,
+	diggable = false,
+	buildable_to = true,
+	is_ground_content = false,
+	drop = "",
+	drowning = 1,
+	liquidtype = "source",
+	liquid_alternative_flowing = "elepower_nuclear:heavy_water_flowing",
+	liquid_alternative_source = "elepower_nuclear:heavy_water_source",
+	liquid_viscosity = 4,
+	post_effect_color = {a = 103, r = 13, g = 69, b = 121},
+	groups = {heavy_water = 3, liquid = 3, puts_out_fire = 1, cools_lava = 1},
+	sounds = default.node_sound_water_defaults(),
+})
+
+minetest.register_node("elepower_nuclear:heavy_water_flowing", {
+	description = "Flowing Heavy Water",
+	drawtype = "flowingliquid",
+	tiles = {"elenuclear_heavy_water.png"},
+	special_tiles = {
+		{
+			name = "elenuclear_heavy_water_flowing_animated.png",
+			backface_culling = false,
+			animation = {
+				type = "vertical_frames",
+				aspect_w = 16,
+				aspect_h = 16,
+				length = 0.8,
+			},
+		},
+		{
+			name = "elenuclear_heavy_water_flowing_animated.png",
+			backface_culling = true,
+			animation = {
+				type = "vertical_frames",
+				aspect_w = 16,
+				aspect_h = 16,
+				length = 0.8,
+			},
+		},
+	},
+	alpha = 160,
+	paramtype = "light",
+	paramtype2 = "flowingliquid",
+	walkable = false,
+	pointable = false,
+	diggable = false,
+	buildable_to = true,
+	is_ground_content = false,
+	drop = "",
+	drowning = 1,
+	liquidtype = "flowing",
+	liquid_alternative_flowing = "elepower_nuclear:heavy_water_flowing",
+	liquid_alternative_source = "elepower_nuclear:heavy_water_source",
+	liquid_viscosity = 4,
+	post_effect_color = {a = 103, r = 13, g = 69, b = 121},
+	groups = {heavy_water = 3, liquid = 3, puts_out_fire = 1,
+		not_in_creative_inventory = 1, cools_lava = 1},
+	sounds = default.node_sound_water_defaults(),
+})
 
-------------
--- Fluids --
-------------
 
 -- Cold coolant
 
@@ -136,8 +229,13 @@ minetest.register_node("elepower_nuclear:hot_coolant_flowing", {
 	sounds = default.node_sound_water_defaults(),
 })
 
+if minetest.get_modpath("bucket") ~= nil then
 	bucket.register_liquid("elepower_nuclear:coolant_source", "elepower_nuclear:hot_coolant_flowing",
 		"elepower_nuclear:bucket_coolant", "#2497ff", "Coolant (Cold)")
 
 	bucket.register_liquid("elepower_nuclear:hot_coolant_source", "elepower_nuclear:hot_coolant_flowing",
 		"elepower_nuclear:bucket_hot_coolant", "#88649e", "Coolant (Hot)")
+
+	bucket.register_liquid("elepower_nuclear:heavy_water_source", "elepower_nuclear:heavy_water_flowing",
+		"elepower_nuclear:bucket_heavy_water", "#0d4579", "Heavy Water Bucket")
+end

elepower_nuclear/machines/fusion_reactor.lua

@@ -1,4 +1,6 @@
 
+local struct_cache = {}
+
 local iC = 1 -- Casing
 local iR = 2 -- Controller
 local iI = 3 -- Inputs
@@ -55,9 +57,11 @@ local function determine_structure(pos, player)
 				local scan_pos = vector.add(pos, {x = relX, y = y, z = relZ})
 				local index = area:indexp(scan_pos)
 				if data[index] ~= ntype then
+					if player then
 						minetest.chat_send_player(player, ('Incorrect node at %d,%d,%d; expected %s, found %s'):format(
 							scan_pos.x,scan_pos.y,scan_pos.z,minetest.get_name_from_content_id(ntype),
 							minetest.get_name_from_content_id(data[index])))
+					end
 					success = false
 					break
 				end
@@ -73,13 +77,180 @@ local function determine_structure(pos, player)
 		end
 	end
 
-	if success then
+	if success and player then
 		minetest.chat_send_player(player, "Multi-node structure complete!")
 	end
 
 	return success, inputs, outputs, power
 end
 
+local function notify_controller_presence(posi, posj)
+	for _, pos in pairs(posi) do
+		local meta = minetest.get_meta(pos)
+		meta:set_string("ctrl", posj)
+
+		local t = minetest.get_node_timer(pos)
+		if not t:is_started() then
+			t:start(1.0)
+		end
+	end
+end
+
+local function controller_formspec(in1, in2, out, power, time, state)
+	local bar = "image[3.5,1;1,1;gui_furnace_arrow_bg.png^[transformR270]"
+
+	if time ~= nil then
+		bar = "image[3.5,1;1,1;gui_furnace_arrow_bg.png^[lowpart:"..
+			  (time)..":gui_furnace_arrow_fg.png^[transformR270]"
+	end
+
+	return "size[8,8.5]"..
+		default.gui_bg..
+		default.gui_bg_img..
+		default.gui_slots..
+		ele.formspec.power_meter(power)..
+		ele.formspec.fluid_bar(1, 0, in1)..
+		ele.formspec.fluid_bar(2, 0, in2)..
+		bar..
+		ele.formspec.fluid_bar(7, 0, out)..
+		ele.formspec.state_switcher(7, 2.5, state)
+end
+
+local function controller_timer(pos)
+	local refresh = false
+	local meta = minetest.get_meta(pos)
+
+	-- Cache all reactor components
+	local cpos = minetest.pos_to_string(pos)
+	if not struct_cache[cpos] then
+		local st, i, o, p = determine_structure(pos)
+		if st then
+			struct_cache[cpos] = {
+				inputs = i,
+				outputs = o,
+				power = p,
+			}
+
+			notify_controller_presence(i, cpos)
+			notify_controller_presence(o, cpos)
+			notify_controller_presence(p, cpos)
+		else
+			return false
+		end
+	end
+
+	local in1_buffer = fluid_lib.get_buffer_data(pos, "in1")
+	local in2_buffer = fluid_lib.get_buffer_data(pos, "in2")
+	local out_buffer = fluid_lib.get_buffer_data(pos, "out")
+
+	local capacity   = ele.helpers.get_node_property(meta, pos, "capacity")
+	local storage    = ele.helpers.get_node_property(meta, pos, "storage")
+	local pow_buffer = {capacity = capacity, storage = storage, usage = 0}
+
+	meta:set_string("formspec", controller_formspec(in1_buffer, in2_buffer, out_buffer, pow_buffer, 0, 0))
+
+	-- Factors:
+	-- 1. Power. Power keeps these stats up:
+	--   1. Field Strength
+	--   2. Internal Temperature
+	-- 2. Fuel
+
+	-- Deuterium + Tritium -> Helium Plasma
+	-- Ignition temperature: 2000K (70% scale)
+	-- Field strength: >90%
+	-- 1000 + 1000 mB of fuel : 2600 sec, 675 neutrons/s
+	-- Helium plasma will be used to create electricity via heat exchange.
+
+	return refresh
+end
+
+local function get_port_controller(pos)
+	local meta = minetest.get_meta(pos)
+	local ctrl = minetest.string_to_pos(meta:get_string("ctrl"))
+	local ctrl_node = minetest.get_node_or_nil(ctrl)
+
+	if not ctrl_node or ctrl_node.name ~= "elepower_nuclear:reactor_controller" then
+		return nil
+	end
+
+	return ctrl, minetest.get_meta(ctrl)
+end
+
+local function port_destruct(pos)
+	local meta = minetest.get_meta(pos)
+	local ctrl, ctrl_meta = get_port_controller(pos)
+	if not ctrl then return nil end
+
+	-- Remove controller's cache entry, forcing it to redetect its structure
+	local ctrl_name = minetest.pos_to_string(ctrl)
+	if struct_cache[ctrl_name] then
+		struct_cache[ctrl_name] = nil
+	end
+
+	local t = minetest.get_node_timer(ctrl)
+	if not t:is_started() then
+		t:start(1.0)
+	end
+end
+
+-- Transfer power from the power port to the controller
+local function power_timer(pos)
+	local refresh = false
+	local meta = minetest.get_meta(pos)
+	local ctrl, ctrl_meta = get_port_controller(pos)
+
+	if not ctrl then
+		meta:set_string("No controller found.")
+		return false
+	end
+
+	local localc = ele.helpers.get_node_property(meta, pos, "capacity")
+	local locals = ele.helpers.get_node_property(meta, pos, "storage")
+
+	local remotec = ele.helpers.get_node_property(ctrl_meta, ctrl, "capacity")
+	local remotes = ele.helpers.get_node_property(ctrl_meta, ctrl, "storage")
+
+	if remotes ~= remotec then
+		if remotes + locals > remotec then
+			local add = remotec - remotes
+			locals  = locals - add
+			remotes = remotes + add
+		else
+			remotes = remotes + locals
+			locals  = 0
+		end
+		refresh = true
+	end
+
+	if refresh then
+		meta:set_int("storage", locals)
+		ctrl_meta:set_int("storage", remotes)
+
+		local t = minetest.get_node_timer(ctrl)
+		if not t:is_started() then
+			t:start(1.0)
+		end
+	end
+
+	meta:set_string("infotext", ("Feeding controller at %s\nLocal %s"):format(
+		minetest.pos_to_string(ctrl), ele.capacity_text(localc, locals)))
+
+	return refresh
+end
+
+local function port_timer(pos)
+	local meta = minetest.get_meta(pos)
+	local ctrl = get_port_controller(pos)
+
+	if not ctrl then
+		meta:set_string("No controller found.")
+		return false
+	end
+
+	meta:set_string("infotext", "Feeding controller at " .. minetest.pos_to_string(ctrl))
+	return false
+end
+
 -----------
 -- Nodes --
 -----------
@@ -90,9 +261,30 @@ minetest.register_node("elepower_nuclear:reactor_controller", {
 		"elepower_advblock_combined.png", "elepower_advblock_combined.png", "elepower_advblock_combined.png",
 		"elepower_advblock_combined.png", "elepower_advblock_combined.png", "elepower_advblock_combined.png^elenuclear_fusion_controller.png",
 	},
-	groups = {cracky = 2},
+	groups = {
+		cracky = 2,
+	},
+	fluid_buffers = {
+		in1 = {
+			capacity  = 16000,
+			accepts   = {"elepower_nuclear:deuterium"},
+			drainable = false,
+		},
+		in2 = {
+			capacity  = 16000,
+			accepts   = {"elepower_nuclear:tritium", "elepower_nuclear:helium"},
+			drainable = false,
+		},
+		out = {
+			capacity  = 16000,
+			accepts   = nil,
+			drainable = true,
+		},
+	},
+	ele_capacity = 64000,
+	on_timer = controller_timer,
 	on_punch = function (pos, node, puncher, pointed_thing)
-		print(determine_structure(pos, puncher:get_player_name()))
+		determine_structure(pos, puncher:get_player_name())
 		minetest.node_punch(pos, node, puncher, pointed_thing)
 	end,
 })
@@ -104,7 +296,16 @@ minetest.register_node("elepower_nuclear:reactor_power", {
 		"elepower_advblock_combined.png", "elepower_advblock_combined.png", "elepower_advblock_combined.png^elenuclear_power_port.png^elepower_power_port.png",
 	},
 	paramtype2 = "facedir",
-	groups = {cracky = 2},
+	groups = {
+		cracky = 2,
+		ele_machine = 1,
+		ele_user = 1,
+	},
+	ele_capacity = 8000,
+	ele_usage = 0,
+	ele_inrush = 64,
+	on_timer = power_timer,
+	on_destruct = port_destruct,
 })
 
 minetest.register_node("elepower_nuclear:reactor_fluid", {
@@ -115,7 +316,66 @@ minetest.register_node("elepower_nuclear:reactor_fluid", {
 		"elepower_advblock_combined.png^elenuclear_fluid_port.png^elepower_power_port.png",
 	},
 	paramtype2 = "facedir",
-	groups = {cracky = 2},
+	groups = {
+		cracky = 2,
+		fluid_container = 1,
+		tube = 1,
+	},
+	fluid_buffers = {},
+	on_timer = port_timer,
+	on_destruct = port_destruct,
+	node_io_can_put_liquid = function (pos, node, side)
+		return true
+	end,
+	node_io_can_take_liquid = function (pos, node, side)
+		return false
+	end,
+	node_io_get_liquid_size = function (pos, node, side)
+		return 2
+	end,
+	node_io_get_liquid_name = function(pos, node, side, index)
+		local ctrl, ctrl_meta = get_port_controller(pos)
+		if not ctrl then return nil end
+
+		return ctrl_meta:get_string("in" .. index .. "_fluid")
+	end,
+	node_io_get_liquid_stack = function(pos, node, side, index)
+		local ctrl, ctrl_meta = get_port_controller(pos)
+		if not ctrl then return ItemStack(nil) end
+
+		return ItemStack(ctrl_meta:get_string("in" .. index .. "_fluid") .. " " ..
+			ctrl_meta:get_int("in" .. index .. "_fluid_storage"))
+	end,
+	node_io_accepts_millibuckets = function(pos, node, side) return true end,
+	node_io_put_liquid = function(pos, node, side, putter, liquid, millibuckets)
+		local ctrl, ctrl_meta = get_port_controller(pos)
+		if not ctrl then return nil end
+
+		local buffers = fluid_lib.get_node_buffers(ctrl)
+		local leftovers = 0
+		for buffer,data in pairs(buffers) do
+			if millibuckets == 0 then break end
+			local didnt_fit = fluid_lib.insert_into_buffer(ctrl, buffer, liquid, millibuckets)
+			millibuckets = millibuckets - (millibuckets - didnt_fit)
+			leftovers = leftovers + didnt_fit
+		end
+		return leftovers
+	end,
+	node_io_room_for_liquid = function(pos, node, side, liquid, millibuckets)
+		local ctrl, ctrl_meta = get_port_controller(pos)
+		if not ctrl then return nil end
+
+		local buffers = fluid_lib.get_node_buffers(ctrl)
+		local insertable = 0
+		for buffer,data in pairs(buffers) do
+			local insert = fluid_lib.can_insert_into_buffer(ctrl, buffer, liquid, millibuckets)
+			if insert > 0 then
+				insertable = insert
+				break
+			end
+		end
+		return insertable
+	end,
 })
 
 minetest.register_node("elepower_nuclear:reactor_output", {
@@ -126,7 +386,67 @@ minetest.register_node("elepower_nuclear:reactor_output", {
 		"elepower_advblock_combined.png^elenuclear_fluid_port_out.png^elepower_power_port.png",
 	},
 	paramtype2 = "facedir",
-	groups = {cracky = 2},
+	groups = {
+		cracky = 2,
+		fluid_container = 1,
+		tube = 1,
+	},
+	fluid_buffers = {},
+	on_timer = port_timer,
+	on_destruct = port_destruct,
+	node_io_can_put_liquid = function (pos, node, side)
+		return false
+	end,
+	node_io_can_take_liquid = function (pos, node, side)
+		return true
+	end,
+	node_io_accepts_millibuckets = function(pos, node, side) return true end,
+	node_io_take_liquid = function(pos, node, side, taker, want_liquid, want_millibuckets)
+		local ctrl, ctrl_meta = get_port_controller(pos)
+		if not ctrl then return nil end
+
+		local buffers = fluid_lib.get_node_buffers(ctrl)
+		local buffer  = "out"
+		local took    = 0
+		local name    = ""
+
+		local bfdata = fluid_lib.get_buffer_data(ctrl, buffer)
+		local storage = bfdata.amount
+		local fluid = bfdata.fluid
+		if (fluid == want_liquid or want_liquid == "") and storage >= want_millibuckets then
+			name, took = fluid_lib.take_from_buffer(ctrl, buffer, want_millibuckets)
+		end
+
+		return {name = name, millibuckets = took}
+	end,
+	node_io_get_liquid_size = function (pos, node, side)
+		return 1
+	end,
+	node_io_get_liquid_name = function(pos, node, side, index)
+		local ctrl, ctrl_meta = get_port_controller(pos)
+		if not ctrl then return "" end
+		return ctrl_meta:get_string("out_fluid")
+	end,
+	node_io_get_liquid_stack = function(pos, node, side, index)
+		local ctrl, ctrl_meta = get_port_controller(pos)
+		if not ctrl then return ItemStack(nil) end
+
+		return ItemStack(ctrl_meta:get_string("out_fluid") .. " " ..
+			ctrl_meta:get_int("out_fluid_storage"))
+	end,
+})
+
+minetest.register_lbm({
+	label = "Enable Fusion Reactors on load",
+	name = "elepower_nuclear:fusion_reactors",
+	nodenames = {"elepower_nuclear:reactor_controller"},
+	run_at_every_load = true,
+	action = function (pos)
+		local t = minetest.get_node_timer(pos)
+		if not t:is_started() then
+			t:start(1.0)
+		end
+	end,
 })
 
 -- Define reactor structure with Content IDs

elepower_nuclear/machines/heat_exchanger.lua

@@ -15,6 +15,17 @@ local function get_formspec(heat, cold, water, steam)
 		default.get_hotbar_bg(0, 4.25)
 end
 
+local heat_recipes = {
+	["elepower_nuclear:hot_coolant_source"] = {
+		out = "elepower_nuclear:coolant_source",
+		factor = 1,
+	},
+	["elepower_nuclear:helium_plasma"] = {
+		out = "elepower_nuclear:helium",
+		factor = 8,
+	},
+}
+
 local function heat_exchanger_timer(pos)
 	local meta = minetest.get_meta(pos)
 	local change = false
@@ -24,15 +35,25 @@ local function heat_exchanger_timer(pos)
 	local water = fluid_lib.get_buffer_data(pos, "water")
 	local steam = fluid_lib.get_buffer_data(pos, "steam")
 
+	while true do
+		if heat.amount < 1000 or heat.fluid == "" or not heat_recipes[heat.fluid] then
+			break
+		end
+
 		-- See if we have enough hot coolant
-	if heat.amount >= 1000 then
+		if heat.amount >= 1000 and heat.fluid ~= "" then
-		local water_convert = math.min(water.amount, 1000)
+			local damnt = heat_recipes[heat.fluid]
+			local water_convert = math.min(water.amount, 1000 * damnt.factor)
+
+			if cold.fluid ~= damnt.fluid and cold.fluid ~= "" then
+				break
+			end
+
 			if steam.amount + water_convert > steam.capacity then
 				water_convert = steam.capacity - steam.amount
 			end
 
-		if water_convert > 0 then
+			if water_convert > 0 and cold.amount + 1000 < cold.capacity then
-			if cold.amount + 1000 < cold.capacity then
 				-- Conversion
 				heat.amount = heat.amount - 1000
 				cold.amount = cold.amount + 1000
@@ -40,13 +61,16 @@ local function heat_exchanger_timer(pos)
 				water.amount = water.amount - water_convert
 				steam.amount = steam.amount + water_convert
 
+				cold.fluid = damnt.out
 				change = true
 			end
 		end
+
+		break
 	end
 
 	if change then
-		meta:set_string("cold_fluid", "elepower_nuclear:coolant_source")
+		meta:set_string("cold_fluid", cold.fluid)
 		meta:set_string("steam_fluid", "elepower_dynamics:steam")
 
 		meta:set_int("heat_fluid_storage", heat.amount)
@@ -58,7 +82,7 @@ local function heat_exchanger_timer(pos)
 
 	meta:set_string("formspec", get_formspec(heat, cold, water, steam))
 
-	return false
+	return change
 end
 
 ele.register_machine("elepower_nuclear:heat_exchanger", {
@@ -71,12 +95,12 @@ ele.register_machine("elepower_nuclear:heat_exchanger", {
 	fluid_buffers = {
 		heat = {
 			capacity  = 8000,
-			accepts   = {"elepower_nuclear:hot_coolant_source"},
+			accepts   = {"elepower_nuclear:hot_coolant_source", "elepower_nuclear:helium_plasma"},
 			drainable = false,
 		},
 		cold = {
 			capacity  = 8000,
-			accepts   = {"elepower_nuclear:coolant_source"},
+			accepts   = {"elepower_nuclear:coolant_source", "elepower_nuclear:helium"},
 			drainable = true,
 		},
 		water = {