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-rw-r--r--mesecons_luacontroller/init.lua94
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', ''},
}
})
+