mesecons/mesecons_luacontroller/init.lua
luk3yx 028c290cd7 Mark 'code' as private as well
Saves on bandwidth, however the code is still accessible via the formspec.
2018-09-18 13:01:18 +02:00

883 lines
27 KiB
Lua
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

-- ______
-- |
-- |
-- | __ ___ _ __ _ _
-- | | | | | |\ | | |_| | | | | |_ |_|
-- |___| |______ |__| | \| | | \ |__| |_ |_ |_ |\
-- |
-- |
--
-- Reference
-- ports = get_real_port_states(pos): gets if inputs are powered from outside
-- newport = merge_port_states(state1, state2): just does result = state1 or state2 for every port
-- set_port(pos, rule, state): activates/deactivates the mesecons according to the port states
-- set_port_states(pos, ports): Applies new port states to a Luacontroller at pos
-- run_inner(pos, code, event): runs code on the controller at pos and event
-- reset_formspec(pos, code, errmsg): installs new code and prints error messages, without resetting LCID
-- reset_meta(pos, code, errmsg): performs a software-reset, installs new code and prints error message
-- run(pos, event): a wrapper for run_inner which gets code & handles errors via reset_meta
-- resetn(pos): performs a hardware reset, turns off all ports
--
-- The Sandbox
-- The whole code of the controller runs in a sandbox,
-- a very restricted environment.
-- Actually the only way to damage the server is to
-- use too much memory from the sandbox.
-- You can add more functions to the environment
-- (see where local env is defined)
-- Something nice to play is is appending minetest.env to it.
local BASENAME = "mesecons_luacontroller:luacontroller"
local rules = {
a = {x = -1, y = 0, z = 0, name="A"},
b = {x = 0, y = 0, z = 1, name="B"},
c = {x = 1, y = 0, z = 0, name="C"},
d = {x = 0, y = 0, z = -1, name="D"},
}
------------------
-- Action stuff --
------------------
-- These helpers are required to set the port states of the luacontroller
local function update_real_port_states(pos, rule_name, new_state)
local meta = minetest.get_meta(pos)
if rule_name == nil then
meta:set_int("real_portstates", 1)
return
end
local n = meta:get_int("real_portstates") - 1
local L = {}
for i = 1, 4 do
L[i] = n % 2
n = math.floor(n / 2)
end
-- (0,-1) (-1,0) (1,0) (0,1)
local pos_to_side = { 4, 1, nil, 3, 2 }
if rule_name.x == nil then
for _, rname in ipairs(rule_name) do
local port = pos_to_side[rname.x + (2 * rname.z) + 3]
L[port] = (newstate == "on") and 1 or 0
end
else
local port = pos_to_side[rule_name.x + (2 * rule_name.z) + 3]
L[port] = (new_state == "on") and 1 or 0
end
meta:set_int("real_portstates",
1 +
1 * L[1] +
2 * L[2] +
4 * L[3] +
8 * L[4])
end
local port_names = {"a", "b", "c", "d"}
local function get_real_port_states(pos)
-- Determine if ports are powered (by itself or from outside)
local meta = minetest.get_meta(pos)
local L = {}
local n = meta:get_int("real_portstates") - 1
for _, name in ipairs(port_names) do
L[name] = ((n % 2) == 1)
n = math.floor(n / 2)
end
return L
end
local function merge_port_states(ports, vports)
return {
a = ports.a or vports.a,
b = ports.b or vports.b,
c = ports.c or vports.c,
d = ports.d or vports.d,
}
end
local function generate_name(ports)
local d = ports.d and 1 or 0
local c = ports.c and 1 or 0
local b = ports.b and 1 or 0
local a = ports.a and 1 or 0
return BASENAME..d..c..b..a
end
local function set_port(pos, rule, state)
if state then
mesecon.receptor_on(pos, {rule})
else
mesecon.receptor_off(pos, {rule})
end
end
local function clean_port_states(ports)
ports.a = ports.a and true or false
ports.b = ports.b and true or false
ports.c = ports.c and true or false
ports.d = ports.d and true or false
end
local function set_port_states(pos, ports)
local node = minetest.get_node(pos)
local name = node.name
clean_port_states(ports)
local vports = minetest.registered_nodes[name].virtual_portstates
local new_name = generate_name(ports)
if name ~= new_name and vports then
-- Problem:
-- We need to place the new node first so that when turning
-- off some port, it won't stay on because the rules indicate
-- there is an onstate output port there.
-- When turning the output off then, it will however cause feedback
-- so that the luacontroller will receive an "off" event by turning
-- its output off.
-- Solution / Workaround:
-- Remember which output was turned off and ignore next "off" event.
local meta = minetest.get_meta(pos)
local ign = minetest.deserialize(meta:get_string("ignore_offevents"), true) or {}
if ports.a and not vports.a and not mesecon.is_powered(pos, rules.a) then ign.A = true end
if ports.b and not vports.b and not mesecon.is_powered(pos, rules.b) then ign.B = true end
if ports.c and not vports.c and not mesecon.is_powered(pos, rules.c) then ign.C = true end
if ports.d and not vports.d and not mesecon.is_powered(pos, rules.d) then ign.D = true end
meta:set_string("ignore_offevents", minetest.serialize(ign))
minetest.swap_node(pos, {name = new_name, param2 = node.param2})
if ports.a ~= vports.a then set_port(pos, rules.a, ports.a) end
if ports.b ~= vports.b then set_port(pos, rules.b, ports.b) end
if ports.c ~= vports.c then set_port(pos, rules.c, ports.c) end
if ports.d ~= vports.d then set_port(pos, rules.d, ports.d) end
end
end
-----------------
-- Overheating --
-----------------
local function burn_controller(pos)
local node = minetest.get_node(pos)
node.name = BASENAME.."_burnt"
minetest.swap_node(pos, node)
minetest.get_meta(pos):set_string("lc_memory", "");
-- Wait for pending operations
minetest.after(0.2, mesecon.receptor_off, pos, mesecon.rules.flat)
end
local function overheat(pos, meta)
if mesecon.do_overheat(pos) then -- If too hot
burn_controller(pos)
return true
end
end
------------------------
-- Ignored off events --
------------------------
local function ignore_event(event, meta)
if event.type ~= "off" then return false end
local ignore_offevents = minetest.deserialize(meta:get_string("ignore_offevents"), true) or {}
if ignore_offevents[event.pin.name] then
ignore_offevents[event.pin.name] = nil
meta:set_string("ignore_offevents", minetest.serialize(ignore_offevents))
return true
end
end
-------------------------
-- Parsing and running --
-------------------------
local function safe_print(param)
local string_meta = getmetatable("")
local sandbox = string_meta.__index
string_meta.__index = string -- Leave string sandbox temporarily
print(dump(param))
string_meta.__index = sandbox -- Restore string sandbox
end
local function safe_date()
return(os.date("*t",os.time()))
end
-- string.rep(str, n) with a high value for n can be used to DoS
-- the server. Therefore, limit max. length of generated string.
local function safe_string_rep(str, n)
if #str * n > mesecon.setting("luacontroller_string_rep_max", 64000) then
debug.sethook() -- Clear hook
error("string.rep: string length overflow", 2)
end
return string.rep(str, n)
end
-- string.find with a pattern can be used to DoS the server.
-- Therefore, limit string.find to patternless matching.
local function safe_string_find(...)
if (select(4, ...)) ~= true then
debug.sethook() -- Clear hook
error("string.find: 'plain' (fourth parameter) must always be true in a Luacontroller")
end
return string.find(...)
end
local function remove_functions(x)
local tp = type(x)
if tp == "function" then
return nil
end
-- Make sure to not serialize the same table multiple times, otherwise
-- writing mem.test = mem in the Luacontroller will lead to infinite recursion
local seen = {}
local function rfuncs(x)
if x == nil then return end
if seen[x] then return end
seen[x] = true
if type(x) ~= "table" then return end
for key, value in pairs(x) do
if type(key) == "function" or type(value) == "function" then
x[key] = nil
else
if type(key) == "table" then
rfuncs(key)
end
if type(value) == "table" then
rfuncs(value)
end
end
end
end
rfuncs(x)
return x
end
-- itbl: Flat table of functions to run after sandbox cleanup, used to prevent various security hazards
local function get_interrupt(pos, itbl, send_warning)
-- iid = interrupt id
local function interrupt(time, iid)
-- NOTE: This runs within string metatable sandbox, so don't *rely* on anything of the form (""):y
-- Hence the values get moved out. Should take less time than original, so totally compatible
if type(time) ~= "number" then return end
table.insert(itbl, function ()
-- Outside string metatable sandbox, can safely run this now
local luac_id = minetest.get_meta(pos):get_int("luac_id")
-- Check if IID is dodgy, so you can't use interrupts to store an infinite amount of data.
-- Note that this is safe from alter-after-free because this code gets run after the sandbox has ended.
-- This runs outside of the timer and *shouldn't* harm perf. unless dodgy data is being sent in the first place
iid = remove_functions(iid)
local msg_ser = minetest.serialize(iid)
if #msg_ser <= mesecon.setting("luacontroller_interruptid_maxlen", 256) then
mesecon.queue:add_action(pos, "lc_interrupt", {luac_id, iid}, time, iid, 1)
else
send_warning("An interrupt ID was too large!")
end
end)
end
return interrupt
end
-- Given a message object passed to digiline_send, clean it up into a form
-- which is safe to transmit over the network and compute its "cost" (a very
-- rough estimate of its memory usage).
--
-- The cleaning comprises the following:
-- 1. Functions (and userdata, though user scripts ought not to get hold of
-- those in the first place) are removed, because they break the model of
-- Digilines as a network that carries basic data, and they could exfiltrate
-- references to mutable objects from one Luacontroller to another, allowing
-- inappropriate high-bandwidth, no-wires communication.
-- 2. Tables are duplicated because, being mutable, they could otherwise be
-- modified after the send is complete in order to change what data arrives
-- at the recipient, perhaps in violation of the previous cleaning rule or
-- in violation of the message size limit.
--
-- The cost indication is only approximate; its not a perfect measurement of
-- the number of bytes of memory used by the message object.
--
-- Parameters:
-- msg -- the message to clean
-- back_references -- for internal use only; do not provide
--
-- Returns:
-- 1. The cleaned object.
-- 2. The approximate cost of the object.
local function clean_and_weigh_digiline_message(msg, back_references)
local t = type(msg)
if t == "string" then
-- Strings are immutable so can be passed by reference, and cost their
-- length plus the size of the Lua object header (24 bytes on a 64-bit
-- platform) plus one byte for the NUL terminator.
return msg, #msg + 25
elseif t == "number" then
-- Numbers are passed by value so need not be touched, and cost 8 bytes
-- as all numbers in Lua are doubles.
return msg, 8
elseif t == "boolean" then
-- Booleans are passed by value so need not be touched, and cost 1
-- byte.
return msg, 1
elseif t == "table" then
-- Tables are duplicated. Check if this table has been seen before
-- (self-referential or shared table); if so, reuse the cleaned value
-- of the previous occurrence, maintaining table topology and avoiding
-- infinite recursion, and charge zero bytes for this as the object has
-- already been counted.
back_references = back_references or {}
local bref = back_references[msg]
if bref then
return bref, 0
end
-- Construct a new table by cleaning all the keys and values and adding
-- up their costs, plus 8 bytes as a rough estimate of table overhead.
local cost = 8
local ret = {}
back_references[msg] = ret
for k, v in pairs(msg) do
local k_cost, v_cost
k, k_cost = clean_and_weigh_digiline_message(k, back_references)
v, v_cost = clean_and_weigh_digiline_message(v, back_references)
if k ~= nil and v ~= nil then
-- Only include an element if its key and value are of legal
-- types.
ret[k] = v
end
-- If we only counted the cost of a table element when we actually
-- used it, we would be vulnerable to the following attack:
-- 1. Construct a huge table (too large to pass the cost limit).
-- 2. Insert it somewhere in a table, with a function as a key.
-- 3. Insert it somewhere in another table, with a number as a key.
-- 4. The first occurrence doesnt pay the cost because functions
-- are stripped and therefore the element is dropped.
-- 5. The second occurrence doesnt pay the cost because its in
-- back_references.
-- By counting the costs regardless of whether the objects will be
-- included, we avoid this attack; it may overestimate the cost of
-- some messages, but only those that wont be delivered intact
-- anyway because they contain illegal object types.
cost = cost + k_cost + v_cost
end
return ret, cost
else
return nil, 0
end
end
-- itbl: Flat table of functions to run after sandbox cleanup, used to prevent various security hazards
local function get_digiline_send(pos, itbl, send_warning)
if not minetest.global_exists("digilines") then return end
local chan_maxlen = mesecon.setting("luacontroller_digiline_channel_maxlen", 256)
local maxlen = mesecon.setting("luacontroller_digiline_maxlen", 50000)
return function(channel, msg)
-- NOTE: This runs within string metatable sandbox, so don't *rely* on anything of the form (""):y
-- or via anything that could.
-- Make sure channel is string, number or boolean
if type(channel) == "string" then
if #channel > chan_maxlen then
send_warning("Channel string too long.")
return false
end
elseif (type(channel) ~= "string" and type(channel) ~= "number" and type(channel) ~= "boolean") then
send_warning("Channel must be string, number or boolean.")
return false
end
local msg_cost
msg, msg_cost = clean_and_weigh_digiline_message(msg)
if msg == nil or msg_cost > maxlen then
send_warning("Message was too complex, or contained invalid data.")
return false
end
table.insert(itbl, function ()
-- Runs outside of string metatable sandbox
local luac_id = minetest.get_meta(pos):get_int("luac_id")
mesecon.queue:add_action(pos, "lc_digiline_relay", {channel, luac_id, msg})
end)
return true
end
end
local safe_globals = {
-- Don't add pcall/xpcall unless willing to deal with the consequences (unless very careful, incredibly likely to allow killing server indirectly)
"assert", "error", "ipairs", "next", "pairs", "select",
"tonumber", "tostring", "type", "unpack", "_VERSION"
}
local function create_environment(pos, mem, event, itbl, send_warning)
-- Gather variables for the environment
local vports = minetest.registered_nodes[minetest.get_node(pos).name].virtual_portstates
local vports_copy = {}
for k, v in pairs(vports) do vports_copy[k] = v end
local rports = get_real_port_states(pos)
-- Create new library tables on each call to prevent one Luacontroller
-- from breaking a library and messing up other Luacontrollers.
local env = {
pin = merge_port_states(vports, rports),
port = vports_copy,
event = event,
mem = mem,
heat = mesecon.get_heat(pos),
heat_max = mesecon.setting("overheat_max", 20),
print = safe_print,
interrupt = get_interrupt(pos, itbl, send_warning),
digiline_send = get_digiline_send(pos, itbl, send_warning),
string = {
byte = string.byte,
char = string.char,
format = string.format,
len = string.len,
lower = string.lower,
upper = string.upper,
rep = safe_string_rep,
reverse = string.reverse,
sub = string.sub,
find = safe_string_find,
},
math = {
abs = math.abs,
acos = math.acos,
asin = math.asin,
atan = math.atan,
atan2 = math.atan2,
ceil = math.ceil,
cos = math.cos,
cosh = math.cosh,
deg = math.deg,
exp = math.exp,
floor = math.floor,
fmod = math.fmod,
frexp = math.frexp,
huge = math.huge,
ldexp = math.ldexp,
log = math.log,
log10 = math.log10,
max = math.max,
min = math.min,
modf = math.modf,
pi = math.pi,
pow = math.pow,
rad = math.rad,
random = math.random,
sin = math.sin,
sinh = math.sinh,
sqrt = math.sqrt,
tan = math.tan,
tanh = math.tanh,
},
table = {
concat = table.concat,
insert = table.insert,
maxn = table.maxn,
remove = table.remove,
sort = table.sort,
},
os = {
clock = os.clock,
difftime = os.difftime,
time = os.time,
datetable = safe_date,
},
}
env._G = env
for _, name in pairs(safe_globals) do
env[name] = _G[name]
end
return env
end
local function timeout()
debug.sethook() -- Clear hook
error("Code timed out!", 2)
end
local function create_sandbox(code, env)
if code:byte(1) == 27 then
return nil, "Binary code prohibited."
end
local f, msg = loadstring(code)
if not f then return nil, msg end
setfenv(f, env)
-- Turn off JIT optimization for user code so that count
-- events are generated when adding debug hooks
if rawget(_G, "jit") then
jit.off(f, true)
end
local maxevents = mesecon.setting("luacontroller_maxevents", 10000)
return function(...)
-- NOTE: This runs within string metatable sandbox, so the setting's been moved out for safety
-- Use instruction counter to stop execution
-- after luacontroller_maxevents
debug.sethook(timeout, "", maxevents)
local ok, ret = pcall(f, ...)
debug.sethook() -- Clear hook
if not ok then error(ret, 0) end
return ret
end
end
local function load_memory(meta)
return minetest.deserialize(meta:get_string("lc_memory"), true) or {}
end
local function save_memory(pos, meta, mem)
local memstring = minetest.serialize(remove_functions(mem))
local memsize_max = mesecon.setting("luacontroller_memsize", 100000)
if (#memstring <= memsize_max) then
meta:set_string("lc_memory", memstring)
meta:mark_as_private("lc_memory")
else
print("Error: Luacontroller memory overflow. "..memsize_max.." bytes available, "
..#memstring.." required. Controller overheats.")
burn_controller(pos)
end
end
-- Returns success (boolean), errmsg (string)
-- run (as opposed to run_inner) is responsible for setting up meta according to this output
local function run_inner(pos, code, event)
local meta = minetest.get_meta(pos)
-- Note: These return success, presumably to avoid changing LC ID.
if overheat(pos) then return true, "" end
if ignore_event(event, meta) then return true, "" end
-- Load code & mem from meta
local mem = load_memory(meta)
local code = meta:get_string("code")
-- 'Last warning' label.
local warning = ""
local function send_warning(str)
warning = "Warning: " .. str
end
-- Create environment
local itbl = {}
local env = create_environment(pos, mem, event, itbl, send_warning)
-- Create the sandbox and execute code
local f, msg = create_sandbox(code, env)
if not f then return false, msg end
-- Start string true sandboxing
local onetruestring = getmetatable("")
-- If a string sandbox is already up yet inconsistent, something is very wrong
assert(onetruestring.__index == string)
onetruestring.__index = env.string
local success, msg = pcall(f)
onetruestring.__index = string
-- End string true sandboxing
if not success then return false, msg end
if type(env.port) ~= "table" then
return false, "Ports set are invalid."
end
-- Actually set the ports
set_port_states(pos, env.port)
-- Save memory. This may burn the luacontroller if a memory overflow occurs.
save_memory(pos, meta, env.mem)
-- Execute deferred tasks
for _, v in ipairs(itbl) do
local failure = v()
if failure then
return false, failure
end
end
return true, warning
end
local function reset_formspec(meta, code, errmsg)
meta:set_string("code", code)
meta:mark_as_private("code")
code = minetest.formspec_escape(code or "")
errmsg = minetest.formspec_escape(tostring(errmsg or ""))
meta:set_string("formspec", "size[12,10]"..
"background[-0.2,-0.25;12.4,10.75;jeija_luac_background.png]"..
"textarea[0.2,0.2;12.2,9.5;code;;"..code.."]"..
"image_button[4.75,8.75;2.5,1;jeija_luac_runbutton.png;program;]"..
"image_button_exit[11.72,-0.25;0.425,0.4;jeija_close_window.png;exit;]"..
"label[0.1,9;"..errmsg.."]")
end
local function reset_meta(pos, code, errmsg)
local meta = minetest.get_meta(pos)
reset_formspec(meta, code, errmsg)
meta:set_int("luac_id", math.random(1, 65535))
end
-- Wraps run_inner with LC-reset-on-error
local function run(pos, event)
local meta = minetest.get_meta(pos)
local code = meta:get_string("code")
local ok, errmsg = run_inner(pos, code, event)
if not ok then
reset_meta(pos, code, errmsg)
else
reset_formspec(meta, code, errmsg)
end
return ok, errmsg
end
local function reset(pos)
set_port_states(pos, {a=false, b=false, c=false, d=false})
end
-----------------------
-- A.Queue callbacks --
-----------------------
mesecon.queue:add_function("lc_interrupt", function (pos, luac_id, iid)
-- There is no luacontroller anymore / it has been reprogrammed / replaced / burnt
if (minetest.get_meta(pos):get_int("luac_id") ~= luac_id) then return end
if (minetest.registered_nodes[minetest.get_node(pos).name].is_burnt) then return end
run(pos, {type="interrupt", iid = iid})
end)
mesecon.queue:add_function("lc_digiline_relay", function (pos, channel, luac_id, msg)
if not digiline then return end
-- This check is only really necessary because in case of server crash, old actions can be thrown into the future
if (minetest.get_meta(pos):get_int("luac_id") ~= luac_id) then return end
if (minetest.registered_nodes[minetest.get_node(pos).name].is_burnt) then return end
-- The actual work
digiline:receptor_send(pos, digiline.rules.default, channel, msg)
end)
-----------------------
-- Node Registration --
-----------------------
local output_rules = {}
local input_rules = {}
local node_box = {
type = "fixed",
fixed = {
{-8/16, -8/16, -8/16, 8/16, -7/16, 8/16}, -- Bottom slab
{-5/16, -7/16, -5/16, 5/16, -6/16, 5/16}, -- Circuit board
{-3/16, -6/16, -3/16, 3/16, -5/16, 3/16}, -- IC
}
}
local selection_box = {
type = "fixed",
fixed = { -8/16, -8/16, -8/16, 8/16, -5/16, 8/16 },
}
local digiline = {
receptor = {},
effector = {
action = function(pos, node, channel, msg)
msg = clean_and_weigh_digiline_message(msg)
run(pos, {type = "digiline", channel = channel, msg = msg})
end
}
}
local function get_program(pos)
local meta = minetest.get_meta(pos)
return meta:get_string("code")
end
local function set_program(pos, code)
reset(pos)
reset_meta(pos, code)
return run(pos, {type="program"})
end
local function on_receive_fields(pos, form_name, fields, sender)
if not fields.program then
return
end
local name = sender:get_player_name()
if minetest.is_protected(pos, name) and not minetest.check_player_privs(name, {protection_bypass=true}) then
minetest.record_protection_violation(pos, name)
return
end
local ok, err = set_program(pos, fields.code)
if not ok then
-- it's not an error from the server perspective
minetest.log("action", "Lua controller programming error: " .. tostring(err))
end
end
for a = 0, 1 do -- 0 = off 1 = on
for b = 0, 1 do
for c = 0, 1 do
for d = 0, 1 do
local cid = tostring(d)..tostring(c)..tostring(b)..tostring(a)
local node_name = BASENAME..cid
local top = "jeija_luacontroller_top.png"
if a == 1 then
top = top.."^jeija_luacontroller_LED_A.png"
end
if b == 1 then
top = top.."^jeija_luacontroller_LED_B.png"
end
if c == 1 then
top = top.."^jeija_luacontroller_LED_C.png"
end
if d == 1 then
top = top.."^jeija_luacontroller_LED_D.png"
end
local groups
if a + b + c + d ~= 0 then
groups = {dig_immediate=2, not_in_creative_inventory=1, overheat = 1}
else
groups = {dig_immediate=2, overheat = 1}
end
output_rules[cid] = {}
input_rules[cid] = {}
if a == 1 then table.insert(output_rules[cid], rules.a) end
if b == 1 then table.insert(output_rules[cid], rules.b) end
if c == 1 then table.insert(output_rules[cid], rules.c) end
if d == 1 then table.insert(output_rules[cid], rules.d) end
if a == 0 then table.insert( input_rules[cid], rules.a) end
if b == 0 then table.insert( input_rules[cid], rules.b) end
if c == 0 then table.insert( input_rules[cid], rules.c) end
if d == 0 then table.insert( input_rules[cid], rules.d) end
local mesecons = {
effector = {
rules = input_rules[cid],
action_change = function (pos, _, rule_name, new_state)
update_real_port_states(pos, rule_name, new_state)
run(pos, {type=new_state, pin=rule_name})
end,
},
receptor = {
state = mesecon.state.on,
rules = output_rules[cid]
},
luacontroller = {
get_program = get_program,
set_program = set_program,
},
}
minetest.register_node(node_name, {
description = "Luacontroller",
drawtype = "nodebox",
tiles = {
top,
"jeija_microcontroller_bottom.png",
"jeija_microcontroller_sides.png",
"jeija_microcontroller_sides.png",
"jeija_microcontroller_sides.png",
"jeija_microcontroller_sides.png"
},
inventory_image = top,
paramtype = "light",
is_ground_content = false,
groups = groups,
drop = BASENAME.."0000",
sunlight_propagates = true,
selection_box = selection_box,
node_box = node_box,
on_construct = reset_meta,
on_receive_fields = on_receive_fields,
sounds = default.node_sound_stone_defaults(),
mesecons = mesecons,
digiline = digiline,
-- Virtual portstates are the ports that
-- the node shows as powered up (light up).
virtual_portstates = {
a = a == 1,
b = b == 1,
c = c == 1,
d = d == 1,
},
after_dig_node = function (pos, node)
mesecon.do_cooldown(pos)
mesecon.receptor_off(pos, output_rules)
end,
is_luacontroller = true,
on_blast = mesecon.on_blastnode,
})
end
end
end
end
------------------------------
-- Overheated Luacontroller --
------------------------------
minetest.register_node(BASENAME .. "_burnt", {
drawtype = "nodebox",
tiles = {
"jeija_luacontroller_burnt_top.png",
"jeija_microcontroller_bottom.png",
"jeija_microcontroller_sides.png",
"jeija_microcontroller_sides.png",
"jeija_microcontroller_sides.png",
"jeija_microcontroller_sides.png"
},
inventory_image = "jeija_luacontroller_burnt_top.png",
is_burnt = true,
paramtype = "light",
is_ground_content = false,
groups = {dig_immediate=2, not_in_creative_inventory=1},
drop = BASENAME.."0000",
sunlight_propagates = true,
selection_box = selection_box,
node_box = node_box,
on_construct = reset_meta,
on_receive_fields = on_receive_fields,
sounds = default.node_sound_stone_defaults(),
virtual_portstates = {a = false, b = false, c = false, d = false},
mesecons = {
effector = {
rules = mesecon.rules.flat,
action_change = function(pos, _, rule_name, new_state)
update_real_port_states(pos, rule_name, new_state)
end,
},
},
on_blast = mesecon.on_blastnode,
})
------------------------
-- Craft Registration --
------------------------
minetest.register_craft({
output = BASENAME.."0000 2",
recipe = {
{'mesecons_materials:silicon', 'mesecons_materials:silicon', 'group:mesecon_conductor_craftable'},
{'mesecons_materials:silicon', 'mesecons_materials:silicon', 'group:mesecon_conductor_craftable'},
{'group:mesecon_conductor_craftable', 'group:mesecon_conductor_craftable', ''},
}
})