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mesecons
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mesecons/mesecons_microcontroller/init.lua

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EEPROM_SIZE = 255
for a = 0, 1 do
for b = 0, 1 do
for c = 0, 1 do
for d = 0, 1 do
local nodename = "mesecons_microcontroller:microcontroller"..tostring(d)..tostring(c)..tostring(b)..tostring(a)
local top = "jeija_microcontroller_top.png"
if tostring(a) == "1" then
top = top.."^jeija_microcontroller_LED_A.png"
end
if tostring(b) == "1" then
top = top.."^jeija_microcontroller_LED_B.png"
end
if tostring(c) == "1" then
top = top.."^jeija_microcontroller_LED_C.png"
end
if tostring(d) == "1" then
top = top.."^jeija_microcontroller_LED_D.png"
end
if tostring(d)..tostring(c)..tostring(b)..tostring(a) ~= "0000" then
groups = {dig_immediate=2, not_in_creative_inventory=1, mesecon = 3}
else
groups = {dig_immediate=2, mesecon = 3}
end
local rules={}
if (a == 1) then table.insert(rules, {x = -1, y = 0, z = 0}) end
if (b == 1) then table.insert(rules, {x = 0, y = 0, z = 1}) end
if (c == 1) then table.insert(rules, {x = 1, y = 0, z = 0}) end
if (d == 1) then table.insert(rules, {x = 0, y = 0, z = -1}) end
local input_rules={}
if (a == 0) then table.insert(input_rules, {x = -1, y = 0, z = 0, name = "A"}) end
if (b == 0) then table.insert(input_rules, {x = 0, y = 0, z = 1, name = "B"}) end
if (c == 0) then table.insert(input_rules, {x = 1, y = 0, z = 0, name = "C"}) end
if (d == 0) then table.insert(input_rules, {x = 0, y = 0, z = -1, name = "D"}) end
mesecon:add_rules(nodename, rules)
local mesecons = {effector =
{
rules = input_rules,
action_change = function (pos, node, rulename)
update_yc(pos)
end
}}
if nodename ~= "mesecons_microcontroller:microcontroller0000" then
mesecons.receptor = {
state = mesecon.state.on,
rules = rules
}
end
minetest.register_node(nodename, {
description = "Microcontroller",
drawtype = "nodebox",
tiles = {
top,
"jeija_microcontroller_bottom.png",
"jeija_microcontroller_sides.png",
"jeija_microcontroller_sides.png",
"jeija_microcontroller_sides.png",
"jeija_microcontroller_sides.png"
},
sunlight_propagates = true,
paramtype = "light",
walkable = true,
groups = groups,
drop = '"mesecons_microcontroller:microcontroller0000" 1',
selection_box = {
type = "fixed",
fixed = { -8/16, -8/16, -8/16, 8/16, -5/16, 8/16 },
},
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
}
},
on_construct = function(pos)
local meta = minetest.env:get_meta(pos)
meta:set_string("code", "")
meta:set_string("formspec", "size[9,2.5]"..
"field[0.256,-0.2;9,2;code;Code:;]"..
"button[0 ,0.2;1.5,3;band;AND]"..
"button[1.5,0.2;1.5,3;bxor;XOR]"..
"button[3 ,0.2;1.5,3;bnot;NOT]"..
"button[4.5,0.2;1.5,3;bnand;NAND]"..
"button[6 ,0.2;1.5,3;btflop;T-Flop]"..
"button[7.5,0.2;1.5,3;brsflop;RS-Flop]"..
"button_exit[3.5,1;2,3;program;Program]")
meta:set_string("infotext", "Unprogrammed Microcontroller")
meta:set_int("heat", 0)
local r = ""
for i=1, EEPROM_SIZE+1 do r=r.."0" end --Generate a string with EEPROM_SIZE*"0"
meta:set_string("eeprom", r)
end,
on_receive_fields = function(pos, formanme, fields, sender)
local meta = minetest.env:get_meta(pos)
if fields.band then
fields.code = "sbi(C, A&B) :A and B are inputs, C is output"
elseif fields.bxor then
fields.code = "sbi(C, A~B) :A and B are inputs, C is output"
elseif fields.bnot then
fields.code = "sbi(B, !A) :A is input, B is output"
elseif fields.bnand then
fields.code = "sbi(C, !A|!B) :A and B are inputs, C is output"
elseif fields.btflop then
fields.code = "if(A)sbi(1,1);if(!A&#1)sbi(B,!B)sbi(1,0); if(C)off(B,1); :A is input, B is output (Q), C is reset, toggles with falling edge"
elseif fields.brsflop then
fields.code = "if(A)on(C);if(B)off(C); :A is S (Set), B is R (Reset), C is output (R dominates)"
elseif fields.program or fields.code then --nothing
else return nil end
meta:set_string("code", fields.code)
meta:set_string("formspec", "size[9,2.5]"..
"field[0.256,-0.2;9,2;code;Code:;"..fields.code.."]"..
"button[0 ,0.2;1.5,3;band;AND]"..
"button[1.5,0.2;1.5,3;bxor;XOR]"..
"button[3 ,0.2;1.5,3;bnot;NOT]"..
"button[4.5,0.2;1.5,3;bnand;NAND]"..
"button[6 ,0.2;1.5,3;btflop;T-Flop]"..
"button[7.5,0.2;1.5,3;brsflop;RS-Flop]"..
"button_exit[3.5,1;2,3;program;Program]")
meta:set_string("infotext", "Programmed Microcontroller")
yc_reset (pos)
update_yc(pos)
end,
sounds = default.node_sound_stone_defaults(),
mesecons = mesecons,
after_dig_node = function (pos, node)
rules = mesecon:get_rules(node.name)
mesecon:receptor_off(pos, rules)
end,
})
end
end
end
end
minetest.register_craft({
output = 'craft "mesecons_microcontroller:microcontroller0000" 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', ''},
}
})
function yc_reset(pos)
yc_action(pos, {a=false, b=false, c=false, d=false})
local meta = minetest.env:get_meta(pos)
meta:set_int("heat", 0)
meta:set_int("afterid", 0)
local r = ""
for i=1, EEPROM_SIZE+1 do r=r.."0" end --Generate a string with EEPROM_SIZE*"0"
meta:set_string("eeprom", r)
end
function update_yc(pos)
local meta = minetest.env:get_meta(pos)
yc_heat(meta)
minetest.after(0.5, yc_cool, meta)
if (yc_overheat(meta)) then
minetest.env:remove_node(pos)
minetest.after(0.2, yc_overheat_off, pos) --wait for pending parsings
minetest.env:add_item(pos, "mesecons_microcontroller:microcontroller0000")
end
local code = meta:get_string("code")
code = yc_code_remove_commentary(code)
code = string.gsub(code, " ", "") --Remove all spaces
code = string.gsub(code, " ", "") --Remove all tabs
if yc_parsecode(code, pos) == nil then
meta:set_string("infotext", "Code not valid!\n"..code)
else
meta:set_string("infotext", "Working Microcontroller\n"..code)
end
end
--Code Parsing
function yc_code_remove_commentary(code)
is_string = false
for i = 1, #code do
if code:sub(i, i) == '"' then
is_string = not is_string --toggle is_string
elseif code:sub(i, i) == ":" and not is_string then
return code:sub(1, i-1)
end
end
return code
end
function yc_parsecode(code, pos)
local meta = minetest.env:get_meta(pos)
local endi = 1
local Lreal = yc_get_real_portstates(pos)
local Lvirtual = yc_get_virtual_portstates(pos)
if Lvirtual == nil then return nil end
local c
local eeprom = meta:get_string("eeprom")
while true do
command, endi = parse_get_command(code, endi)
if command == nil then return nil end
if command == true then break end --end of code
if command == "if" then
r, endi = yc_command_if(code, endi, yc_merge_portstates(Lreal, Lvirtual), eeprom)
if r == nil then return nil end
if r == true then -- nothing
elseif r == false then
endi_new = yc_skip_to_else (code, endi)
if endi_new == nil then --else > not found
endi = yc_skip_to_endif(code, endi)
else
endi = endi_new
end
if endi == nil then return nil end
end
else
params, endi = parse_get_params(code, endi)
if params == nil then return nil end
end
if command == "on" then
L = yc_command_on (params, Lvirtual)
elseif command == "off" then
L = yc_command_off(params, Lvirtual)
elseif command == "print" then
local su = yc_command_print(params, eeprom, yc_merge_portstates(Lreal, Lvirtual))
if su ~= true then return nil end
elseif command == "after" then
local su = yc_command_after(params, pos)
if su == nil then return nil end
elseif command == "sbi" then
new_eeprom, Lvirtual = yc_command_sbi (params, eeprom, yc_merge_portstates(Lreal, Lvirtual), Lvirtual)
if new_eeprom == nil then return nil
else eeprom = new_eeprom end
elseif command == "if" then --nothing
else
return nil
end
if Lvirtual == nil then return nil end
if eeprom == nil then return nil else
minetest.env:get_meta(pos):set_string("eeprom", eeprom) end
end
yc_action(pos, Lvirtual)
return true
end
function parse_get_command(code, starti)
i = starti
s = nil
while s ~= "" do
s = string.sub(code, i, i)
if s == "(" then
return string.sub(code, starti, i-1), i + 1 -- i: ( i+1 after (
end
if s == ";" and starti == i then
starti = starti + 1
i = starti
elseif s == ">" then
starti = yc_skip_to_endif(code, starti)
if starti == nil then return nil end
i = starti
else
i = i + 1
end
end
if starti == i-1 then
return true, true
end
return nil, nil
end
function parse_get_params(code, starti)
i = starti
s = nil
local params = {}
local is_string = false
while s ~= "" do
s = string.sub(code, i, i)
if code:sub(i, i) == '"' then
is_string = (is_string==false) --toggle is_string
end
if s == ")" and is_string == false then
table.insert(params, string.sub(code, starti, i-1)) -- i: ) i+1 after )
return params, i + 1
end
if s == "," and is_string == false then
table.insert(params, string.sub(code, starti, i-1)) -- i: ) i+1 after )
starti = i + 1
end
i = i + 1
end
return nil, nil
end
function yc_parse_get_eeprom_param(cond, starti)
i = starti
s = nil
local addr
while s ~= "" do
s = string.sub(cond, i, i)
if string.find("0123456789", s) == nil or s == "" then
addr = string.sub(cond, starti, i-1) -- i: last number i+1 after last number
return addr, i
end
if s == "," then return nil, nil end
i = i + 1
end
return nil, nil
end
function yc_skip_to_endif(code, starti)
local i = starti
local s = false
local open_ifs = 1
while s ~= nil and s~= "" do
s = code:sub(i, i)
if s == "i" and code:sub(i+1, i+1) == "f" then --if in µCScript
open_ifs = open_ifs + 1
end
if s == ";" then
open_ifs = open_ifs - 1
end
if open_ifs == 0 then
return i + 1
end
i = i + 1
end
return nil
end
function yc_skip_to_else(code, starti)
local i = starti
local s = false
local open_ifs = 1
while s ~= nil and s~= "" do
s = code:sub(i, i)
if s == "i" and code:sub(i+1, i+1) == "f" then --if in µCScript
open_ifs = open_ifs + 1
end
if s == ";" then
open_ifs = open_ifs - 1
end
if open_ifs == 1 and s == ">" then
return i + 1
end
i = i + 1
end
return nil
end
--Commands
function yc_command_on(params, L)
local rules = {}
for i, port in ipairs(params) do
L = yc_set_portstate (port, true, L)
end
return L
end
function yc_command_off(params, L)
local rules = {}
for i, port in ipairs(params) do
L = yc_set_portstate (port, false, L)
end
return L
end
function yc_command_print(params, eeprom, L)
local s = ""
for i, param in ipairs(params) do
if param:sub(1,1) == '"' and param:sub(#param, #param) == '"' then
s = s..param:sub(2, #param-1)
else
r = yc_command_parsecondition(param, L, eeprom)
if r == "1" or r == "0" then
s = s..r
else return nil end
end
end
print(s) --don't remove
return true
end
function yc_command_sbi(params, eeprom, L, Lv)
if params[1]==nil or params[2]==nil or params[3] ~=nil then return nil end
local status = yc_command_parsecondition(params[2], L, eeprom)
if status == nil then return nil, nil end
if string.find("ABCD", params[1])~=nil and #params[1]==1 then --is a port
if status == "1" then
Lv = yc_set_portstate (params[1], true, Lv)
else
Lv = yc_set_portstate (params[1], false, Lv)
end
return eeprom, Lv;
end
--is an eeprom address
new_eeprom = "";
for i=1, #eeprom do
if tonumber(params[1])==i then
new_eeprom = new_eeprom..status
else
new_eeprom = new_eeprom..eeprom:sub(i, i)
end
end
return new_eeprom, Lv
end
-- after (delay)
function yc_command_after(params, pos)
if params[1] == nil or params[2] == nil or params[3] ~= nil then return nil end
--get time (maximum time is 200)
local time = tonumber(params[1])
if time == nil or time > 200 then
return nil
end
--get code in quotes "code"
if string.sub(params[2], 1, 1) ~= '"' or string.sub(params[2], #params[2], #params[2]) ~= '"' then return nil end
local code = string.sub(params[2], 2, #params[2] - 1)
local afterid = math.random(10000)
local meta = minetest.env:get_meta(pos)
meta:set_int("afterid", afterid)
minetest.after(time, yc_command_after_execute, {pos = pos, code = code, afterid = afterid})
return true
end
function yc_command_after_execute(params)
local meta = minetest.env:get_meta(params.pos)
if meta:get_int("afterid") == params.afterid then --make sure the node has not been changed
if yc_parsecode(params.code, params.pos) == nil then
meta:set_string("infotext", "Code in after() not valid!")
else
if code ~= nil then
meta:set_string("infotext", "Working Microcontroller\n"..code)
else
meta:set_string("infotext", "Working Microcontroller")
end
end
end
end
--If
function yc_command_if(code, starti, L, eeprom)
local cond, endi = yc_command_if_getcondition(code, starti)
if cond == nil then return nil end
cond = yc_command_parsecondition(cond, L, eeprom)
if cond == "0" then result = false
elseif cond == "1" then result = true
else result = nil end
if result == nil then end
return result, endi --endi from local cond, endi = yc_command_if_getcondition(code, starti)
end
--Condition parsing
function yc_command_if_getcondition(code, starti)
i = starti
s = nil
local brackets = 1 --1 Bracket to close
while s ~= "" do
s = string.sub(code, i, i)
if s == ")" then
brackets = brackets - 1
end
if s == "(" then
brackets = brackets + 1
end
if brackets == 0 then
return string.sub(code, starti, i-1), i + 1 -- i: ( i+1 after (
end
i = i + 1
end
return nil, nil
end
function yc_command_parsecondition(cond, L, eeprom)
cond = string.gsub(cond, "A", tonumber(L.a and 1 or 0))
cond = string.gsub(cond, "B", tonumber(L.b and 1 or 0))
cond = string.gsub(cond, "C", tonumber(L.c and 1 or 0))
cond = string.gsub(cond, "D", tonumber(L.d and 1 or 0))
local i = 1
local l = string.len(cond)
while i<=l do
local s = cond:sub(i,i)
if s == "#" then
addr, endi = yc_parse_get_eeprom_param(cond, i+1)
buf = yc_eeprom_read(tonumber(addr), eeprom)
if buf == nil then return nil end
local call = cond:sub(i, endi-1)
cond = string.gsub(cond, call, buf)
i = 0
l = string.len(cond)
end
i = i + 1
end
cond = string.gsub(cond, "!0", "1")
cond = string.gsub(cond, "!1", "0")
local i = 2
local l = string.len(cond)
while i<=l do
local s = cond:sub(i,i)
local b = tonumber(cond:sub(i-1, i-1))
local a = tonumber(cond:sub(i+1, i+1))
if cond:sub(i+1, i+1) == nil then break end
if s == "=" then
if a==nil then return nil end
if b==nil then return nil end
if a == b then buf = "1" end
if a ~= b then buf = "0" end
cond = string.gsub(cond, b..s..a, buf)
i = 1
l = string.len(cond)
end
i = i + 1
end
local i = 2
local l = string.len(cond)
while i<=l do
local s = cond:sub(i,i)
local b = tonumber(cond:sub(i-1, i-1))
local a = tonumber(cond:sub(i+1, i+1))
if cond:sub(i+1, i+1) == nil then break end
if s == "&" then
if a==nil then return nil end
local buf = ((a==1) and (b==1))
if buf == true then buf = "1" end
if buf == false then buf = "0" end
cond = string.gsub(cond, b..s..a, buf)
i = 1
l = string.len(cond)
end
if s == "|" then
if a==nil then return nil end
local buf = ((a == 1) or (b == 1))
if buf == true then buf = "1" end
if buf == false then buf = "0" end
cond = string.gsub(cond, b..s..a, buf)
i = 1
l = string.len(cond)
end
if s == "~" then
if a==nil then return nil end
local buf = (((a == 1) or (b == 1)) and not((a==1) and (b==1)))
if buf == true then buf = "1" end
if buf == false then buf = "0" end
cond = string.gsub(cond, b..s..a, buf)
i = 1
l = string.len(cond)
end
i = i + 1
end
return cond
end
--Virtual-Hardware functions
function yc_eeprom_read(number, eeprom)
if number == nil then return nil, nil end
value = eeprom:sub(number, number)
if value == nil then return nil, nil end
return value, endi
end
--Real I/O functions
function yc_action(pos, L) --L-->Lvirtual
local Lv = yc_get_virtual_portstates(pos)
local name = "mesecons_microcontroller:microcontroller"
..tonumber(L.d and 1 or 0)
..tonumber(L.c and 1 or 0)
..tonumber(L.b and 1 or 0)
..tonumber(L.a and 1 or 0)
mesecon:swap_node(pos, name)
yc_action_setports(pos, L, Lv)
end
function yc_action_setports(pos, L, Lv)
local name = "mesecons_microcontroller:microcontroller"
local rules
if Lv.a ~= L.a then
rules = mesecon:get_rules(name.."0001")
if L.a == true then mesecon:receptor_on(pos, rules)
else mesecon:receptor_off(pos, rules) end
end
if Lv.b ~= L.b then
rules = mesecon:get_rules(name.."0010")
if L.b == true then mesecon:receptor_on(pos, rules)
else mesecon:receptor_off(pos, rules) end
end
if Lv.c ~= L.c then
rules = mesecon:get_rules(name.."0100")
if L.c == true then mesecon:receptor_on(pos, rules)
else mesecon:receptor_off(pos, rules) end
end
if Lv.d ~= L.d then
rules = mesecon:get_rules(name.."1000")
if L.d == true then mesecon:receptor_on(pos, rules)
else mesecon:receptor_off(pos, rules) end
end
end
function yc_set_portstate(port, state, L)
if port == "A" then L.a = state
elseif port == "B" then L.b = state
elseif port == "C" then L.c = state
elseif port == "D" then L.d = state
else return nil end
return L
end
function yc_get_real_portstates(pos) -- port powered or not (by itself or from outside)?
rulesA = mesecon:get_rules("mesecons_microcontroller:microcontroller0001")
rulesB = mesecon:get_rules("mesecons_microcontroller:microcontroller0010")
rulesC = mesecon:get_rules("mesecons_microcontroller:microcontroller0100")
rulesD = mesecon:get_rules("mesecons_microcontroller:microcontroller1000")
L = {
a = mesecon:is_power_on({x=pos.x+rulesA[1].x, y=pos.y+rulesA[1].y, z=pos.z+rulesA[1].z}) and mesecon:rules_link({x=pos.x+rulesA[1].x, y=pos.y+rulesA[1].y, z=pos.z+rulesA[1].z}, pos),
b = mesecon:is_power_on({x=pos.x+rulesB[1].x, y=pos.y+rulesB[1].y, z=pos.z+rulesB[1].z}) and mesecon:rules_link({x=pos.x+rulesB[1].x, y=pos.y+rulesB[1].y, z=pos.z+rulesB[1].z}, pos),
c = mesecon:is_power_on({x=pos.x+rulesC[1].x, y=pos.y+rulesC[1].y, z=pos.z+rulesC[1].z}) and mesecon:rules_link({x=pos.x+rulesC[1].x, y=pos.y+rulesC[1].y, z=pos.z+rulesC[1].z}, pos),
d = mesecon:is_power_on({x=pos.x+rulesD[1].x, y=pos.y+rulesD[1].y, z=pos.z+rulesD[1].z}) and mesecon:rules_link({x=pos.x+rulesD[1].x, y=pos.y+rulesD[1].y, z=pos.z+rulesD[1].z}, pos)
}
return L
end
function yc_get_virtual_portstates(pos) -- portstates according to the name
name = minetest.env:get_node(pos).name
b, a = string.find(name, ":microcontroller")
if a == nil then return nil end
a = a + 1
Lvirtual = {a=false, b=false, c=false, d=false}
if name:sub(a , a ) == "1" then Lvirtual.d = true end
if name:sub(a+1, a+1) == "1" then Lvirtual.c = true end
if name:sub(a+2, a+2) == "1" then Lvirtual.b = true end
if name:sub(a+3, a+3) == "1" then Lvirtual.a = true end
return Lvirtual
end
function yc_merge_portstates(Lreal, Lvirtual)
local L = {a=false, b=false, c=false, d=false}
if Lvirtual.a or Lreal.a then L.a = true end
if Lvirtual.b or Lreal.b then L.b = true end
if Lvirtual.c or Lreal.c then L.c = true end
if Lvirtual.d or Lreal.d then L.d = true end
return L
end
--"Overheat" protection
function yc_heat(meta)
h = meta:get_int("heat")
if h ~= nil then
meta:set_int("heat", h + 1)
end
end
function yc_cool(meta)
h = meta:get_int("heat")
if h ~= nil then
meta:set_int("heat", h - 1)
end
end
function yc_overheat(meta)
h = meta:get_int("heat")
if h == nil then return true end -- if nil the overheat
if h>30 then
return true
else
return false
end
end
function yc_overheat_off(pos)
rules = mesecon:get_rules("mesecons_microcontroller:microcontroller1111")
mesecon:receptor_off(pos, rules)
end
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