forked from minetest-mods/mesecons
FPGA: Unify actions in single table
This commit is contained in:
SmallJoker
SmallJoker
parent
bfd952b51a
commit
e78bbd6f98
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@ -1,10 +1,10 @@
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local plg = {}
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plg.rules = {}
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local lcore = dofile(minetest.get_modpath(minetest.get_current_modname()) .. "/logic.lua")
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dofile(minetest.get_modpath(minetest.get_current_modname()) .. "/tool.lua")(plg)
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plg.register_nodes = function(template)
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-- each loop is for one of the 4 IO ports
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for a = 0, 1 do
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@ -180,22 +180,16 @@ plg.to_formspec_string = function(is)
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return s .. "]"
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end
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local function dropdown_action(x, y, name, val)
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local s = "dropdown[" .. tostring(x) .. "," .. tostring(y) .. ";"
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.. "1.125,0.5;" .. name .. ";" -- the height seems to be ignored?
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s = s .. " , AND, OR, NOT, XOR,NAND, =,XNOR;"
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if val == nil then
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return s .. "0]" -- actually selects no field at all
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local selected = 0
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local titles = { " " }
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for i, data in ipairs(lcore.get_operands()) do
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titles[i + 1] = data.fs_name
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if val == data.gate then
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selected = i + 1
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end
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end
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local mapping = {
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["and"] = 1,
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["or"] = 2,
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["not"] = 3,
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["xor"] = 4,
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["nand"] = 5,
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["buf"] = 6,
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["xnor"] = 7,
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}
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return s .. tostring(1 + mapping[val]) .. "]"
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return ("dropdown[%f,%f;1.125,0.5;%s;%s;%i]"):format(
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x, y, name, table.concat(titles, ","), selected)
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end
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local s = "size[9,9]"..
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"label[3.4,-0.15;FPGA gate configuration]"..
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@ -239,20 +233,11 @@ plg.from_formspec_fields = function(fields)
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end
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end
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local function read_action(s)
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if s == nil or s == " " then
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return nil
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for i, data in ipairs(lcore.get_operands()) do
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if data.fs_name == s then
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return data.gate
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end
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end
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local mapping = {
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["AND"] = "and",
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["OR"] = "or",
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["NOT"] = "not",
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["XOR"] = "xor",
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["NAND"] = "nand",
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["="] = "buf",
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["XNOR"] = "xnor",
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}
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s = s:gsub("^%s*", "") -- remove leading spaces
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return mapping[s]
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end
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local is = {}
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for i = 1, 14 do
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@ -1,5 +1,21 @@
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local lg = {}
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local operands = {
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-- index: Index in formspec
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{ gate = "and", short = "&", fs_name = " AND", func = function(a, b) return a and b end },
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{ gate = "or", short = "|", fs_name = " OR", func = function(a, b) return a or b end },
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{ gate = "not", short = "~", fs_name = " NOT", func = function(a, b) return not b end },
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{ gate = "xor", short = "^", fs_name = " XOR", func = function(a, b) return a ~= b end },
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{ gate = "nand", short = "?", fs_name = "NAND", func = function(a, b) return not (a and b) end },
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{ gate = "buf", short = "_", fs_name = " =", func = function(a, b) return b end },
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{ gate = "xnor", short = "=", fs_name = "XNOR", func = function(a, b) return a == b end }
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}
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lg.get_operands = function()
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return operands
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end
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-- (de)serialize
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lg.serialize = function(t)
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local function _op(t)
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@ -11,20 +27,14 @@ lg.serialize = function(t)
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return tostring(t.n)
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end
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end
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local function _action(s)
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if s == nil then
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return " "
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-- Serialize actions (gates) from eg. "and" to "&"
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local function _action(action)
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for i, data in ipairs(operands) do
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if data.gate == action then
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return data.short
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end
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end
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local mapping = {
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["and"] = "&",
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["or"] = "|",
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["not"] = "~",
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["xor"] = "^",
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["nand"] = "?", --dunno
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["buf"] = "_",
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["xnor"] = "=",
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}
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return mapping[s]
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return " "
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end
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local s = ""
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@ -48,18 +58,14 @@ lg.deserialize = function(s)
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return {type = "reg", n = tonumber(c)}
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end
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end
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local function _action(c)
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local mapping = {
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["&"] = "and",
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["|"] = "or",
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["~"] = "not",
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["^"] = "xor",
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["?"] = "nand",
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["_"] = "buf",
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["="] = "xnor",
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[" "] = nil,
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}
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return mapping[c]
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-- Deserialize actions (gates) from eg. "&" to "and"
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local function _action(action)
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for i, data in ipairs(operands) do
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if data.short == action then
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return data.gate
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end
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end
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-- nil
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end
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local ret = {}
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@ -159,21 +165,12 @@ end
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-- interpreter
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lg.interpret = function(t, a, b, c, d)
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local function _action(s, v1, v2)
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if s == "and" then
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return v1 and v2
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elseif s == "or" then
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return v1 or v2
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elseif s == "not" then
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return not v2
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elseif s == "xor" then
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return v1 ~= v2
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elseif s == "nand" then
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return not (v1 and v2)
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elseif s == "buf" then
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return v2
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else -- s == "xnor"
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return v1 == v2
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for i, data in ipairs(operands) do
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if data.gate == s then
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return data.func(v1, v2)
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end
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end
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return false -- unknown gate
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end
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local function _op(t, regs, io_in)
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if t.type == "reg" then
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