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Finer gradations of radioactivity

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Make the "radioactive" group value be the safe distance in millimeters
rather than meters, to allow for intermediate values.  Use such
intermediate values for the uranium blocks, using the existing formula
with this finer quantisation.  All other radioactive nodes retain their
existing radioactivity exactly.
This commit is contained in:
Zefram
2014-08-20 19:14:03 +01:00
parent 7d610b7c80
commit 7a9d2ffe5f
3 changed files with 16 additions and 16 deletions
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18
technic/machines/HV/nuclear_reactor.lua
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@ -293,7 +293,7 @@ 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 = {cracky=1, technic_machine=1, radioactive=7, not_in_creative_inventory=1},
groups = {cracky=1, technic_machine=1, radioactive=7000, not_in_creative_inventory=1},
legacy_facedir_simple = true,
sounds = default.node_sound_wood_defaults(),
drop="technic:hv_nuclear_reactor_core",
@ -541,10 +541,10 @@ end
--
-- A radioactive node is identified by being in the "radioactive" group,
-- and the group value signifies the strength of the radiation source.
-- The group value is the distance in metres from a node at which an
-- unshielded player will be damaged by 0.25 HP/s. Or, equivalently, it
-- is half the square root of the damage rate in HP/s that an unshielded
-- player 1 m away will take.
-- The group value is the distance in millimetres from a node at which
-- an unshielded player will be damaged by 0.25 HP/s. Or, equivalently,
-- it is 500 times the square root of the damage rate in HP/s that an
-- unshielded player 1 m away will take.
--
-- Shielding is assessed by sampling every 0.25 m along the path
-- from the source to the player, ignoring the source node itself.
@ -571,7 +571,7 @@ minetest.register_abm({
chance = 1,
action = function (pos, node)
local strength = minetest.registered_nodes[node.name].groups.radioactive
for _, o in ipairs(minetest.get_objects_inside_radius(pos, strength + assumed_abdomen_offset_length)) do
for _, o in ipairs(minetest.get_objects_inside_radius(pos, strength*0.001 + assumed_abdomen_offset_length)) do
if o:is_player() then
local rel = vector.subtract(vector.add(o:getpos(), assumed_abdomen_offset), pos)
local dist_sq = vector.length_square(rel)
@ -586,7 +586,7 @@ minetest.register_abm({
resistance = resistance + node_radiation_resistance(minetest.get_node(intnodepos).name)
end
end
local dmg_rate = 0.25 * strength*strength * math.exp(-0.0025*resistance) / math.max(0.75, dist_sq)
local dmg_rate = 0.25e-6 * strength*strength * math.exp(-0.0025*resistance) / math.max(0.75, dist_sq)
if dmg_rate >= 0.25 then
local dmg_int = math.floor(dmg_rate)
if math.random() < dmg_rate-dmg_int then
@ -636,7 +636,7 @@ for _, state in ipairs({ "flowing", "source" }) do
liquid = 2,
hot = 3,
igniter = 1,
radioactive = (state == "source" and 32 or 16),
radioactive = (state == "source" and 32000 or 16000),
not_in_creative_inventory = (state == "flowing" and 1 or nil),
},
})
@ -656,7 +656,7 @@ minetest.register_node("technic:chernobylite_block", {
description = S("Chernobylite Block"),
tiles = { "technic_chernobylite_block.png" },
is_ground_content = true,
groups = { cracky=1, radioactive=5, level=2 },
groups = { cracky=1, radioactive=5000, level=2 },
sounds = default.node_sound_stone_defaults(),
light_source = 2,