Radiation API

technic/doc/api.md

@@ -193,6 +193,12 @@ Groups:
 	* UNRELIABLE. Indicates whether the item or node belongs to technic
 * `connect_sides = {"top", "left", ...}`
 	* Extends the Minetest API. Indicates where the machine can be connected.
+* `radioactive = <radiation>`
+	* Makes the node radioactive.
+ 	* `<radiation>`: Strength of the node's radiation (ex. `2`).
+* `rad_resistant = <resistance>`
+	* Makes the node resistant to radiation.
+	* `<resistance>`: Strength of the node's resistance (ex. `80`).
 
 Additional definition fields:
 
@@ -251,7 +257,7 @@ The switching station is the center of all electricity distribution. It collects
 power from sources (PR), distributes it to sinks (RE), and uses the
 excess/shortfall to charge and discharge batteries (BA).
 
-As a thumb of rule, "EU" (energy unit) values are expressed in kW.
+As a rule of thumb, "EU" (energy unit) values are expressed in kW.
 
 Network functionality:
 
@@ -266,6 +272,20 @@ Network functionality:
 5. If the total demand is more than the available power all RE nodes will be shut
    down. We have a brown-out situation.
 
+
+## Radiation
+* `technic.register_rad_resistance(node_name, resistance)`
+	* Sets the radiation resistance of the given node.
+	* `node_name`: name of the node
+	* `resistance`: number, radiation resistance of the node
+* `technic.register_group_resistance(group_name, resistance)`
+	* Sets the radiation resistance of the given group of nodes.
+	* `group_name`: name of the group
+	* `resistance`: number, radiation resistance of the group
+* `technic.cache_resistances()`
+	* Cache radiation resistances after Technic loads.
+
+
 ## Deprecated functions
 
 Following functions are either no longer used by technic, or are planned to

technic/radiation.lua

@@ -28,9 +28,20 @@ or complex internal structure should show no radiation resistance.
 Fractional resistance values are permitted.
 --]]
 
+-- Function to register node-specific resistance
+function technic.register_rad_resistance(node_name, resistance)
+	local node = minetest.registered_nodes[node_name]
+	if node then
+		if not node.groups then
+			node.groups = {}
+		end
+        node.groups.rad_resistant = resistance
+	end
+end
+
 local S = technic.getter
 
-local rad_resistance_node = {
+local node_resistances = {
 	["default:brick"] = 13,
 	["default:bronzeblock"] = 45,
 	["default:clay"] = 15,
@@ -147,56 +158,56 @@ local rad_resistance_node = {
 	["moreores:silver_block"] = 53,
 	["snow:snow_brick"] = 2.8,
 	["basic_materials:brass_block"] = 43,
-	["technic:carbon_steel_block"] = 40,
-	["technic:cast_iron_block"] = 40,
-	["technic:chernobylite_block"] = 40,
-	["technic:chromium_block"] = 37,
 	["technic:corium_flowing"] = 40,
 	["technic:corium_source"] = 80,
-	["technic:granite"] = 18,
-	["technic:lead_block"] = 80,
-	["technic:marble"] = 18,
-	["technic:marble_bricks"] = 18,
-	["technic:mineral_chromium"] = 19,
-	["technic:mineral_uranium"] = 71,
-	["technic:mineral_zinc"] = 19,
-	["technic:stainless_steel_block"] = 40,
-	["technic:zinc_block"] = 36,
 	["tnt:tnt"] = 11,
 	["tnt:tnt_burning"] = 11,
 }
-local rad_resistance_group = {
-	concrete = 16,
-	tree = 3.4,
-	uranium_block = 500,
-	wood = 1.7,
-}
-local cache_radiation_resistance = {}
-local function node_radiation_resistance(node_name)
-	local resistance = cache_radiation_resistance[node_name]
-	if resistance then
-		return resistance
-	end
-	local def = minetest.registered_nodes[node_name]
-	if not def then
-		cache_radiation_resistance[node_name] = 0
-		return 0
-	end
-	resistance = def.radiation_resistance or
-			rad_resistance_node[node_name]
-	if not resistance then
-		resistance = 0
-		for g, v in pairs(def.groups) do
-			if v > 0 and rad_resistance_group[g] then
-				resistance = resistance + rad_resistance_group[g]
+
+-- Register all node resistances at once
+for node_name, resistance in pairs(node_resistances) do
+	technic.register_rad_resistance(node_name, resistance)
+end
+
+-- Function to register group-specific resistance
+function technic.register_group_resistance(group_name, resistance)
+	for node_name, node_def in pairs(minetest.registered_nodes) do
+		if node_def.groups[group_name] then
+			if not node_def.groups.rad_resistant then
+				node_def.groups.rad_resistant = resistance
 			end
 		end
 	end
-	resistance = math.sqrt(resistance)
-	cache_radiation_resistance[node_name] = resistance
-	return resistance
 end
 
+technic.register_group_resistance("concrete", 16)
+technic.register_group_resistance("tree", 3.4)
+technic.register_group_resistance("uranium_block", 500)
+technic.register_group_resistance("wood", 1.7)
+
+--Radiation resistances cache
+technic.resistance_cache = {}
+
+function technic.cache_resistances()
+	for node_name, node_def in pairs(minetest.registered_nodes) do
+		local resistance = 0
+		if node_def.groups and node_def.groups.rad_resistant then
+			resistance = node_def.groups.rad_resistant
+		end
+		technic.resistance_cache[node_name] = resistance
+	end
+end
+
+local function node_radiation_resistance(node_name)
+	technic.cache_resistances()
+
+	local cached_resistance = technic.resistance_cache[node_name]
+	if cached_resistance then
+		return math.sqrt(cached_resistance)
+	else
+		return 0
+	end
+end
 
 --[[
 Radioactive nodes cause damage to nearby players.  The damage
@@ -456,7 +467,7 @@ minetest.register_node("technic:chernobylite_block", {
         description = S("Chernobylite Block"),
 	tiles = {"technic_chernobylite_block.png"},
 	is_ground_content = true,
-	groups = {cracky=1, radioactive=4, level=2},
+	groups = {cracky=1, radioactive=4, level=2, rad_resistant=40},
 	sounds = default.node_sound_stone_defaults(),
 	light_source = 2,
 })

technic_worldgen/nodes.lua

@@ -5,7 +5,7 @@ minetest.register_node( ":technic:mineral_uranium", {
 	description = S("Uranium Ore"),
 	tiles = { "default_stone.png^technic_mineral_uranium.png" },
 	is_ground_content = true,
-	groups = {cracky=3, radioactive=1},
+	groups = {cracky=3, radioactive=1, rad_resistant=71},
 	sounds = default.node_sound_stone_defaults(),
 	drop = "technic:uranium_lump",
 })
@@ -14,7 +14,7 @@ minetest.register_node( ":technic:mineral_chromium", {
 	description = S("Chromium Ore"),
 	tiles = { "default_stone.png^technic_mineral_chromium.png" },
 	is_ground_content = true,
-	groups = {cracky=3},
+	groups = {cracky=3, rad_resistant=19},
 	sounds = default.node_sound_stone_defaults(),
 	drop = "technic:chromium_lump",
 })
@@ -23,7 +23,7 @@ minetest.register_node( ":technic:mineral_zinc", {
 	description = S("Zinc Ore"),
 	tiles = { "default_stone.png^technic_mineral_zinc.png" },
 	is_ground_content = true,
-	groups = {cracky=3},
+	groups = {cracky=3, rad_resistant=19},
 	sounds = default.node_sound_stone_defaults(),
 	drop = "technic:zinc_lump",
 })
@@ -50,31 +50,31 @@ minetest.register_node( ":technic:granite", {
 	description = S("Granite"),
 	tiles = { "technic_granite.png" },
 	is_ground_content = true,
-	groups = {cracky=1},
+	groups = {cracky=1, rad_resistant=18},
 	sounds = default.node_sound_stone_defaults(),
 })
 
 minetest.register_node( ":technic:granite_bricks", {
 	description = S("Granite Bricks"),
 	tiles = { "technic_granite_bricks.png" },
 	is_ground_content = false,
-	groups = {cracky=1},
+	groups = {cracky=1, rad_resistant=18},
 	sounds = default.node_sound_stone_defaults(),
 })
 
 minetest.register_node( ":technic:marble", {
 	description = S("Marble"),
 	tiles = { "technic_marble.png" },
 	is_ground_content = true,
-	groups = {cracky=3, marble=1},
+	groups = {cracky=3, marble=1, rad_resistant=18},
 	sounds = default.node_sound_stone_defaults(),
 })
 
 minetest.register_node( ":technic:marble_bricks", {
 	description = S("Marble Bricks"),
 	tiles = { "technic_marble_bricks.png" },
 	is_ground_content = false,
-	groups = {cracky=3},
+	groups = {cracky=3, rad_resistant=18},
 	sounds = default.node_sound_stone_defaults(),
 })
 
@@ -90,23 +90,23 @@ minetest.register_node(":technic:chromium_block", {
 	description = S("Chromium Block"),
 	tiles = { "technic_chromium_block.png" },
 	is_ground_content = true,
-	groups = {cracky=1, level=2},
+	groups = {cracky=1, level=2, rad_resistant=37},
 	sounds = default.node_sound_stone_defaults()
 })
 
 minetest.register_node(":technic:zinc_block", {
 	description = S("Zinc Block"),
 	tiles = { "technic_zinc_block.png" },
 	is_ground_content = true,
-	groups = {cracky=1, level=2},
+	groups = {cracky=1, level=2, rad_resistant=36},
 	sounds = default.node_sound_stone_defaults()
 })
 
 minetest.register_node(":technic:lead_block", {
 	description = S("Lead Block"),
 	tiles = { "technic_lead_block.png" },
 	is_ground_content = true,
-	groups = {cracky=1, level=2},
+	groups = {cracky=1, level=2, rad_resistant=80},
 	sounds = default.node_sound_stone_defaults()
 })
 
@@ -121,23 +121,23 @@ minetest.register_node(":technic:cast_iron_block", {
 	description = S("Cast Iron Block"),
 	tiles = { "technic_cast_iron_block.png" },
 	is_ground_content = true,
-	groups = {cracky=1, level=2},
+	groups = {cracky=1, level=2, rad_resistant=40},
 	sounds = default.node_sound_stone_defaults()
 })
 
 minetest.register_node(":technic:carbon_steel_block", {
 	description = S("Carbon Steel Block"),
 	tiles = { "technic_carbon_steel_block.png" },
 	is_ground_content = true,
-	groups = {cracky=1, level=2},
+	groups = {cracky=1, level=2, rad_resistant=40},
 	sounds = default.node_sound_stone_defaults()
 })
 
 minetest.register_node(":technic:stainless_steel_block", {
 	description = S("Stainless Steel Block"),
 	tiles = { "technic_stainless_steel_block.png" },
 	is_ground_content = true,
-	groups = {cracky=1, level=2},
+	groups = {cracky=1, level=2, rad_resistant=40},
 	sounds = default.node_sound_stone_defaults()
 })