diff options
| -rw-r--r-- | mesecons_luacontroller/init.lua | 94 |
1 files changed, 73 insertions, 21 deletions
diff --git a/mesecons_luacontroller/init.lua b/mesecons_luacontroller/init.lua index e3aa6fd..f24a8ad 100644 --- a/mesecons_luacontroller/init.lua +++ b/mesecons_luacontroller/init.lua @@ -26,6 +26,11 @@ rules.b = {x = 0, y = 0, z = 1} rules.c = {x = 1, y = 0, z = 0} rules.d = {x = 0, y = 0, z = -1} +------------------ +-- Action stuff -- +------------------ +-- These helpers are required to set the portstates of the luacontroller + local get_real_portstates = function(pos) -- determine if ports are powered (by itself or from outside) ports = { a = mesecon:is_power_on(mesecon:addPosRule(pos, rules.a)) @@ -80,7 +85,10 @@ local action = function (pos, ports) action_setports (pos, ports, vports) end --- Overheat Stuff +-------------------- +-- Overheat stuff -- +-------------------- + local heat = function (meta) -- warm up h = meta:get_int("heat") if h ~= nil then @@ -106,14 +114,14 @@ local overheat = function (meta) -- determine if too hot end local overheat_off = function(pos) - rules = mesecon:get_rules("mesecons_microcontroller:microcontroller1111") - mesecon:receptor_off(pos, rules) + mesecon:receptor_off(pos, mesecon.rules.flat) end -local update = function (pos) - local meta = minetest.env:get_meta(pos) - code = meta:get_string("code") +------------------- +-- Parsing stuff -- +------------------- +local code_prohibited = function(code) -- Clean code local prohibited = {"while", "for", "repeat", "until"} for _, p in ipairs(prohibited) do @@ -121,27 +129,36 @@ local update = function (pos) return "Prohibited command: "..p end end +end + +local safeprint = function(param) + print(dump(param)) +end +local create_environment = function(pos, mem) -- Gather variables for the environment local vports = minetest.registered_nodes[minetest.env: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) - local env = { print = print, - selfpos = pos, - dump = dump, - pin = merge_portstates(vports, rports), - port = vports} + return { print = safeprint, + pin = merge_portstates(vports, rports), + port = vports, + mem = mem} +end +local create_sandbox = function (code, env) -- Create Sandbox if code:byte(1) == 27 then - return "You Hacker You! Don't use binary code!" + return _, "You Hacker You! Don't use binary code!" end - local f, msg = loadstring(code) - if not f then return msg end + f, msg = loadstring(code) + if not f then return _, msg end setfenv(f, env) - success, msg = pcall(f) + return f +end +local do_overheat = function (pos, meta) -- Overheat protection heat(meta) minetest.after(0.5, cool, meta) @@ -151,13 +168,40 @@ local update = function (pos) minetest.env:add_item(pos, BASENAME.."0000") return 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", minetest.serialize(mem)) +end + +---------------------- +-- Parsing function -- +---------------------- + +local update = function (pos) + local meta = minetest.env:get_meta(pos) + + local mem = load_memory(meta) + local code = meta:get_string("code") + + local prohibited = code_prohibited(code) + if prohibited then return prohibited end + local env = create_environment(pos, mem) + + local chunk, msg = create_sandbox (code, env) + if not chunk then return msg end + local success, msg = pcall(f) + if not success then return msg end + + do_overheat(pos, meta) + save_memory(meta, mem) -- Actually set the ports - if not success then - return msg - else - action(pos, env.port) - end + action(pos, env.port) end local reset_meta = function(pos, code, errmsg) @@ -186,7 +230,10 @@ end -- | | | | |\ | | |_| | | | | |_ |_| -- | |______ |__| | \| | | \ |__| |_ |_ |_ |\ -- --- Actually register all the stuff: + +----------------------- +-- Node Registration -- +----------------------- for a = 0, 1 do for b = 0, 1 do @@ -293,6 +340,10 @@ end end end +------------------------ +-- Craft Registration -- +------------------------ + minetest.register_craft({ output = BASENAME.."0000 2", recipe = { @@ -301,3 +352,4 @@ minetest.register_craft({ {'group:mesecon_conductor_craftable', 'group:mesecon_conductor_craftable', ''}, } }) + |