EEPROM_SIZE = 255 minetest.register_node("mesecons_microcontroller:microcontroller", { description = "Microcontroller", drawtype = "nodebox", tiles = {"jeija_ic.png"}, inventory_image = {"jeija_ic.png"}, sunlight_propagates = true, paramtype = "light", walkable = true, groups = {dig_immediate=2}, material = minetest.digprop_constanttime(1.0), selection_box = { type = "fixed", fixed = {-0.5, -0.5, -0.5, 0.5, -0.35, 0.5}, }, node_box = { type = "fixed", fixed = {-0.5, -0.5, -0.5, 0.5, -0.35, 0.5}, }, on_construct = function(pos) local meta = minetest.env:get_meta(pos) meta:set_string("code", "") meta:set_string("formspec", "size[8,2]".. "field[0.256,0.5;8,1;code;Code:;]".. "button_exit[3,0.5;2,2;program;Program]") meta:set_string("infotext", "Unprogrammed Microcontroller") 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) if fields.program then local meta = minetest.env:get_meta(pos) meta:set_string("infotext", "Programmed Microcontroller") meta:set_string("code", fields.code) meta:set_string("formspec", "size[8,2]".. "field[0.256,0.5;8,1;code;Code:;"..fields.code.."]".. "button_exit[3,0.5;2,2;program;Program]") reset_yc (pos) update_yc(pos) end end }) minetest.register_craft({ output = 'craft "mesecons_microcontroller:microcontroller" 2', recipe = { {'mesecons_materials:silicon', 'mesecons_materials:silicon', 'mesecons:mesecon_off'}, {'mesecons_materials:silicon', 'mesecons_materials:silicon', 'mesecons:mesecon_off'}, {'mesecons:mesecon_off', 'mesecons:mesecon_off', ''}, } }) function reset_yc(pos) mesecon:receptor_off(pos, mesecon:get_rules("microcontrollerA")) mesecon:receptor_off(pos, mesecon:get_rules("microcontrollerB")) mesecon:receptor_off(pos, mesecon:get_rules("microcontrollerC")) mesecon:receptor_off(pos, mesecon:get_rules("microcontrollerD")) local meta = minetest.env:get_meta(pos) 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) 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 parse_yccode(code, pos) == nil then meta:set_string("infotext", "Code not valid!") else meta:set_string("infotext", "Working Microcontroller") end end function yc_code_remove_commentary(code) for i = 1, #code do if code:sub(i, i) == ":" then return code:sub(1, i-1) end end return code end function parse_yccode(code, pos) local endi = 1 local L = yc_get_portstates(pos) local c local eeprom = minetest.env:get_meta(pos):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 if command == "if" then r, endi = yc_command_if(code, endi, L, eeprom) if r == nil then return nil end if r == true then -- nothing elseif r == false then endi = yc_skip_to_endif(code, endi) 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, L) elseif command == "off" then L = yc_command_off(params, L) elseif command == "sbi" then new_eeprom = yc_command_sbi (params, eeprom, L) if new_eeprom == nil then return nil else eeprom = new_eeprom end elseif command == "if" then --nothing else return nil end if L == 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, L) return true end function parse_get_command(code, starti) i = starti s = nil while s ~= "" do s = string.sub(code, i, i) if s == ";" and starti == i then starti = starti + 1 i = starti s = string.sub(code, i, i) end if s == "(" then return string.sub(code, starti, i-1), i + 1 -- i: ( i+1 after ( end i = i + 1 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 = {} while s ~= "" do s = string.sub(code, i, i) if s == ")" then table.insert(params, string.sub(code, starti, i-1)) -- i: ) i+1 after ) return params, i + 1 end if s == "," 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_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_sbi(params, eeprom, L) if params[1]==nil or params[2]==nil or params[3] ~=nil or tonumber(params[1])==nil then return nil end local status = yc_command_parsecondition(params[2], L, eeprom) if tonumber(params[1])>EEPROM_SIZE or tonumber(params[1])<1 or (status ~= "0" and status ~= "1") then return nil end 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 end 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 return result, endi --endi from local cond, endi = yc_command_if_getcondition(code, starti) end 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", tostring(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 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 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 function yc_get_port_rules(port) local rules = nil if port == "A" then rules = mesecon:get_rules("microcontrollerA") elseif port == "B" then rules = mesecon:get_rules("microcontrollerB") elseif port == "C" then rules = mesecon:get_rules("microcontrollerC") elseif port == "D" then rules = mesecon:get_rules("microcontrollerD") end return rules end function yc_action(pos, L) yc_action_setport("A", L.a, pos) yc_action_setport("B", L.b, pos) yc_action_setport("C", L.c, pos) yc_action_setport("D", L.d, pos) end function yc_action_setport(port, state, pos) local rules = mesecon:get_rules("microcontroller"..port) if state == false then if mesecon:is_power_on({x=pos.x+rules[1].x, y=pos.y+rules[1].y, z=pos.z+rules[1].z}) then mesecon:turnoff(pos, rules[1].x, rules[1].y, rules[1].z, false) end elseif state == true then if mesecon:is_power_off({x=pos.x+rules[1].x, y=pos.y+rules[1].y, z=pos.z+rules[1].z}) then mesecon:turnon(pos, rules[1].x, rules[1].y, rules[1].z, false) 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_portstates(pos) rulesA = mesecon:get_rules("microcontrollerA") rulesB = mesecon:get_rules("microcontrollerB") rulesC = mesecon:get_rules("microcontrollerC") rulesD = mesecon:get_rules("microcontrollerD") local L = { a = mesecon:is_power_on({x=pos.x+rulesA[1].x, y=pos.y+rulesA[1].y, z=pos.z+rulesA[1].z}), b = mesecon:is_power_on({x=pos.x+rulesB[1].x, y=pos.y+rulesB[1].y, z=pos.z+rulesB[1].z}), c = mesecon:is_power_on({x=pos.x+rulesC[1].x, y=pos.y+rulesC[1].y, z=pos.z+rulesC[1].z}), d = mesecon:is_power_on({x=pos.x+rulesD[1].x, y=pos.y+rulesD[1].y, z=pos.z+rulesD[1].z}) } return L end function yc_skip_to_endif(code, starti) local i = starti local s = false while s ~= nil and s~= "" do s = code:sub(i, i) if s == ";" then return i + 1 end i = i + 1 end return nil end mesecon:register_on_signal_change(function(pos, node) if node.name == "mesecons_microcontroller:microcontroller" then minetest.after(0.5, update_yc, pos) end end) mesecon:add_rules("microcontrollerA", {{x = -1, y = 0, z = 0}}) mesecon:add_rules("microcontrollerB", {{x = 0, y = 0, z = 1}}) mesecon:add_rules("microcontrollerC", {{x = 1, y = 0, z = 0}}) mesecon:add_rules("microcontrollerD", {{x = 0, y = 0, z = -1}}) mesecon:add_rules("microcontroller_default", {}) mesecon:add_receptor_node("mesecons_microcontroller:microcontroller", mesecon:get_rules("microcontroller_default")) mesecon:add_receptor_node("mesecons_microcontroller:microcontroller", mesecon:get_rules("microcontroller_default"))