minetest-mods/mesecons
1
0
Fork 2
mirror of https://github.com/minetest-mods/mesecons.git synced 2024-11-17 15:48:28 +01:00
Code Issues Releases Wiki Activity
f388dc475a
mesecons/mesecons_luacontroller/init.lua

553 lines
15 KiB
Lua
Raw Blame History

-- Reference
-- ports = get_real_portstates(pos): gets if inputs are powered from outside
-- newport = merge_portstates(state1, state2): just does result = state1 or state2 for every port
-- action_setports(pos, rule, state): activates/deactivates the mesecons according to the portstates (helper for action)
-- action(pos, ports): Applies new portstates to a luacontroller at pos
-- lc_update(pos): updates the controller at pos by executing the code
-- reset_meta (pos, code, errmsg): performs a software-reset, installs new code and prints error messages
-- reset (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.
-- However, as this does not prevent you from using e.g. loops,
-- we need to check for these prohibited commands first.
-- 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 = {}
rules.a = {x = -1, y = 0, z = 0, name="A"}
rules.b = {x = 0, y = 0, z = 1, name="B"}
rules.c = {x = 1, y = 0, z = 0, name="C"}
rules.d = {x = 0, y = 0, z = -1, name="D"}
------------------
-- Action stuff --
------------------
-- These helpers are required to set the portstates of the luacontroller
function lc_update_real_portstates(pos, rulename, newstate)
local meta = minetest.get_meta(pos)
if rulename == 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
if rulename.x == nil then
for _, rname in ipairs(rulename) do
local port = ({4, 1, nil, 3, 2})[rname.x+2*rname.z+3]
L[port] = (newstate == "on") and 1 or 0
end
else
local port = ({4, 1, nil, 3, 2})[rulename.x+2*rulename.z+3]
L[port] = (newstate == "on") and 1 or 0
end
meta:set_int("real_portstates", 1 + L[1] + 2*L[2] + 4*L[3] + 8*L[4])
end
local get_real_portstates = function(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 _, index in ipairs({"a", "b", "c", "d"}) do
L[index] = ((n%2) == 1)
n = math.floor(n/2)
end
return L
end
local merge_portstates = function (ports, vports)
local npo = {a=false, b=false, c=false, d=false}
npo.a = vports.a or ports.a
npo.b = vports.b or ports.b
npo.c = vports.c or ports.c
npo.d = vports.d or ports.d
return npo
end
local generate_name = function (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 setport = function (pos, rule, state)
if state then
mesecon.receptor_on(pos, {rule})
else
mesecon.receptor_off(pos, {rule})
end
end
local action = function (pos, ports)
local node = minetest.get_node(pos)
local name = node.name
local vports = minetest.registered_nodes[name].virtual_portstates
local newname = generate_name(ports)
if name ~= newname and vports then
local rules_on = {}
local rules_off = {}
minetest.swap_node(pos, {name = newname, param2 = node.param2})
if ports.a ~= vports.a then setport(pos, rules.a, ports.a) end
if ports.b ~= vports.b then setport(pos, rules.b, ports.b) end
if ports.c ~= vports.c then setport(pos, rules.c, ports.c) end
if ports.d ~= vports.d then setport(pos, rules.d, ports.d) end
end
end
--------------------
-- Overheat stuff --
--------------------
local overheat_off = function(pos)
mesecon.receptor_off(pos, mesecon.rules.flat)
end
-------------------
-- Parsing stuff --
-------------------
local code_prohibited = function(code)
-- Clean code
local prohibited = {"while", "for", "repeat", "until", "function", "goto"}
for _, p in ipairs(prohibited) do
if string.find(code, p) then
return "Prohibited command: "..p
end
end
end
local safe_print = function(param)
print(dump(param))
end
deep_copy = function(original, visited) --deep copy that removes functions
visited = visited or {}
if visited[original] ~= nil then --already visited this node
return visited[original]
end
if type(original) == 'table' then --nested table
local copy = {}
visited[original] = copy
for key, value in next, original, nil do
copy[deep_copy(key, visited)] = deep_copy(value, visited)
end
setmetatable(copy, deep_copy(getmetatable(original), visited))
return copy
elseif type(original) == 'function' then --ignore functions
return nil
else --by-value type
return original
end
end
local safe_serialize = function(value)
return minetest.serialize(deep_copy(value))
end
mesecon.queue:add_function("lc_interrupt", function (pos, luac_id, iid)
-- There is no luacontroller anymore / it has been reprogrammed / replaced
if (minetest.get_meta(pos):get_int("luac_id") ~= luac_id) then return end
lc_update(pos, {type="interrupt", iid = iid})
end)
local getinterrupt = function(pos)
local interrupt = function (time, iid) -- iid = interrupt id
if type(time) ~= "number" then return end
local luac_id = minetest.get_meta(pos):get_int("luac_id")
mesecon.queue:add_action(pos, "lc_interrupt", {luac_id, iid}, time, iid, 1)
end
return interrupt
end
local getdigiline_send = function(pos)
if not digiline then return end
-- Send messages on next serverstep
return function(channel, msg)
minetest.after(0, function()
digiline:receptor_send(pos, digiline.rules.default, channel, msg)
end)
end
end
local create_environment = function(pos, mem, event)
-- Gather variables for the environment
local vports = minetest.registered_nodes[minetest.get_node(pos).name].virtual_portstates
vports = {a = vports.a, b = vports.b, c = vports.c, d = vports.d}
local rports = get_real_portstates(pos)
return {
print = safe_print,
pin = merge_portstates(vports, rports),
port = vports,
interrupt = getinterrupt(pos),
digiline_send = getdigiline_send(pos),
mem = mem,
tostring = tostring,
tonumber = tonumber,
heat = minetest.get_meta(pos):get_int("heat"),
-- overheat_max Unit: actions per second, checks are every 1 second
heat_max = mesecon.setting("overheat_max", 20),
string = {
byte = string.byte,
char = string.char,
find = string.find,
format = string.format,
gmatch = string.gmatch,
gsub = string.gsub,
len = string.len,
lower = string.lower,
upper = string.upper,
match = string.match,
rep = string.rep,
reverse = string.reverse,
sub = string.sub,
},
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 = {
insert = table.insert,
maxn = table.maxn,
remove = table.remove,
sort = table.sort
},
event = event,
}
end
local create_sandbox = function (code, env)
-- Create Sandbox
if code:byte(1) == 27 then
return _, "You Hacker You! Don't use binary code!"
end
local f, msg = loadstring(code)
if not f then return _, msg end
setfenv(f, env)
return f
end
local lc_overheat = function (pos, meta)
if mesecon.do_overheat(pos) then -- if too hot
local node = minetest.get_node(pos)
minetest.swap_node(pos, {name = BASENAME.."_burnt", param2 = node.param2})
minetest.after(0.2, overheat_off, pos) -- wait for pending operations
return true
end
end
local load_memory = function(meta)
return minetest.deserialize(meta:get_string("lc_memory")) or {}
end
local save_memory = function(meta, mem)
meta:set_string("lc_memory", safe_serialize(mem))
end
local ports_invalid = function (var)
if type(var) == "table" then
return false
end
return "The ports you set are invalid"
end
----------------------
-- Parsing function --
----------------------
lc_update = function (pos, event)
local meta = minetest.get_meta(pos)
if lc_overheat(pos) then return end
-- load code & mem from memory
local mem = load_memory(meta)
local code = meta:get_string("code")
-- make sure code is ok and create environment
local prohibited = code_prohibited(code)
if prohibited then return prohibited end
local env = create_environment(pos, mem, event)
-- create the sandbox and execute code
local chunk, msg = create_sandbox (code, env)
if not chunk then return msg end
local success, msg = pcall(chunk)
if not success then return msg end
if ports_invalid(env.port) then return ports_invalid(env.port) end
save_memory(meta, mem)
-- Actually set the ports
action(pos, env.port)
end
local reset_meta = function(pos, code, errmsg)
local meta = minetest.get_meta(pos)
meta:set_string("code", code)
code = minetest.formspec_escape(code or "")
errmsg = minetest.formspec_escape(errmsg or "")
meta:set_string("formspec", "size[10,8]"..
"background[-0.2,-0.25;10.4,8.75;jeija_luac_background.png]"..
"textarea[0.2,0.6;10.2,5;code;;"..code.."]"..
"image_button[3.75,6;2.5,1;jeija_luac_runbutton.png;program;]"..
"image_button_exit[9.72,-0.25;0.425,0.4;jeija_close_window.png;exit;]"..
"label[0.1,5;"..errmsg.."]")
meta:set_int("heat", 0)
meta:set_int("luac_id", math.random(1, 1000000))
end
local reset = function (pos)
action(pos, {a=false, b=false, c=false, d=false})
end
-- ______
-- |
-- |
-- | __ ___ _ __ _ _
-- | | | | | |\ | | |_| | | | | |_ |_|
-- |___| |______ |__| | \| | | \ |__| |_ |_ |_ |\
-- |
-- |
--
-----------------------
-- Node Registration --
-----------------------
local output_rules={}
local input_rules={}
local nodebox = {
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 selectionbox = {
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)
lc_update (pos, {type = "digiline", channel = channel, msg = msg})
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 nodename = 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
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, _, rulename, newstate)
lc_update_real_portstates(pos, rulename, newstate)
lc_update(pos, {type=newstate, pin=rulename})
end,
},
receptor =
{
state = mesecon.state.on,
rules = output_rules[cid]
}
}
minetest.register_node(nodename, {
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",
groups = groups,
drop = BASENAME.."0000",
sunlight_propagates = true,
selection_box = selectionbox,
node_box = nodebox,
on_construct = reset_meta,
on_receive_fields = function(pos, formname, fields)
if not fields.program then
return
end
reset(pos)
reset_meta(pos, fields.code)
local err = lc_update(pos, {type="program"})
if err then
print(err)
reset_meta(pos, fields.code, err)
end
end,
sounds = default.node_sound_stone_defaults(),
mesecons = mesecons,
digiline = digiline,
virtual_portstates = { a = a == 1, -- virtual portstates are
b = b == 1, -- the ports the the
c = c == 1, -- controller powers itself
d = d == 1},-- so those that light up
after_dig_node = function (pos, node)
mesecon.receptor_off(pos, output_rules)
end,
is_luacontroller = true,
})
end
end
end
end
------------------------------
-- overheated luacontroller --
------------------------------
local mesecons_burnt = {
effector =
{
rules = mesecon.rules.flat,
action_change = function (pos, _, rulename, newstate)
-- only update portstates when changes are triggered
lc_update_real_portstates(pos, rulename, newstate)
end
}
}
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",
paramtype = "light",
groups = {dig_immediate=2, not_in_creative_inventory=1},
drop = BASENAME.."0000",
sunlight_propagates = true,
selection_box = selectionbox,
node_box = nodebox,
on_construct = reset_meta,
on_receive_fields = function(pos, formname, fields)
if fields.quit then
return
end
reset(pos)
reset_meta(pos, fields.code)
local err = lc_update(pos, {type="program"})
if err then
print(err)
reset_meta(pos, fields.code, err)
end
end,
sounds = default.node_sound_stone_defaults(),
virtual_portstates = {a = false, b = false, c = false, d = false},
mesecons = mesecons_burnt,
})
------------------------
-- 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', ''},
}
})
View Git Blame Copy Permalink