EEPROM_SIZE = 255 local microc_rules = {} 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, overheat = 1} else groups = {dig_immediate=2, mesecon = 3, overheat = 1} 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 microc_rules[nodename] = rules local mesecons = {effector = { rules = input_rules, action_change = function (pos, node, rulename, newstate) yc_update_real_portstates(pos, node, rulename, newstate) 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.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") 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.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)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)" end if fields.code == nil then return end meta:set_string("code", fields.code) meta:set_string("formspec", "size[9,2.5]".. "field[0.256,-0.2;9,2;code;Code:;"..minetest.formspec_escape(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 = microc_rules[node.name] mesecon.receptor_off(pos, rules) end, }) end end end end minetest.register_craft({ output = 'craft "mesecons_microcontroller:microcontroller0000" 2', recipe = { {'group:mesecon_conductor_craftable', 'group:mesecon_conductor_craftable', ''}, {'mesecons_materials:silicon', 'mesecons_materials:silicon', ''}, {'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.get_meta(pos) 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.get_meta(pos) if (mesecon.do_overheat(pos)) then minetest.remove_node(pos) minetest.after(0.2, function (pos) mesecon.receptor_off(pos, mesecon.rules.flat) end , pos) -- wait for pending parsings minetest.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) local 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.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 local command, params 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 local r 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 local 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 not params 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 local new_eeprom 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.get_meta(pos):set_string("eeprom", eeprom) end end yc_action(pos, Lvirtual) return true end function parse_get_command(code, starti) i = starti local s 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 local s 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 local s 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 local 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.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.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) local result if cond == "0" then result = false elseif cond == "1" then result = true end if not result 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 local s 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 local addr, endi = yc_parse_get_eeprom_param(cond, i+1) local 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 not number then return end return eeprom:sub(number, number) 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) local node = minetest.get_node(pos) minetest.swap_node(pos, {name = name, param2 = node.param2}) 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 = microc_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 = microc_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 = microc_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 = microc_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_update_real_portstates(pos, node, 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 function yc_get_real_portstates(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 function yc_get_virtual_portstates(pos) -- portstates according to the name local name = minetest.get_node(pos).name local b, a = string.find(name, ":microcontroller") if a == nil then return nil end a = a + 1 local 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