mesecons/mesecons_fpga/init.lua

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local S = minetest.get_translator(minetest.get_current_modname())
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local plg = {}
plg.rules = {}
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-- per-player formspec positions
plg.open_formspecs = {}
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local lcore = dofile(minetest.get_modpath(minetest.get_current_modname()) .. "/logic.lua")
dofile(minetest.get_modpath(minetest.get_current_modname()) .. "/tool.lua")(plg)
plg.register_nodes = function(template)
-- each loop is for one of the 4 IO ports
for a = 0, 1 do
for b = 0, 1 do
for c = 0, 1 do
for d = 0, 1 do
local ndef = table.copy(template)
local nodename = "mesecons_fpga:fpga"
.. tostring(d) .. tostring(c) .. tostring(b) .. tostring(a)
-- build top texture string
local texture = "jeija_fpga_top.png"
if a == 1 then texture = texture .. "^jeija_luacontroller_LED_A.png" end
if b == 1 then texture = texture .. "^jeija_luacontroller_LED_B.png" end
if c == 1 then texture = texture .. "^jeija_luacontroller_LED_C.png" end
if d == 1 then texture = texture .. "^jeija_luacontroller_LED_D.png" end
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ndef.tiles[1] = texture
ndef.inventory_image = texture
if (a + b + c + d) > 0 then
ndef.groups["not_in_creative_inventory"] = 1
end
-- interaction with mesecons (input / output)
local rules_out = {}
if a == 1 then table.insert(rules_out, {x = -1, y = 0, z = 0}) end
if b == 1 then table.insert(rules_out, {x = 0, y = 0, z = 1}) end
if c == 1 then table.insert(rules_out, {x = 1, y = 0, z = 0}) end
if d == 1 then table.insert(rules_out, {x = 0, y = 0, z = -1}) end
plg.rules[nodename] = rules_out
local rules_in = {}
if a == 0 then table.insert(rules_in, {x = -1, y = 0, z = 0}) end
if b == 0 then table.insert(rules_in, {x = 0, y = 0, z = 1}) end
if c == 0 then table.insert(rules_in, {x = 1, y = 0, z = 0}) end
if d == 0 then table.insert(rules_in, {x = 0, y = 0, z = -1}) end
ndef.mesecons.effector.rules = rules_in
if (a + b + c + d) > 0 then
ndef.mesecons.receptor = {
state = mesecon.state.on,
rules = rules_out,
}
end
minetest.register_node(nodename, ndef)
end
end
end
end
end
plg.register_nodes({
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description = S("FPGA"),
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drawtype = "nodebox",
tiles = {
"", -- replaced later
"jeija_microcontroller_bottom.png",
"jeija_fpga_sides.png",
"jeija_fpga_sides.png",
"jeija_fpga_sides.png",
"jeija_fpga_sides.png"
},
inventory_image = "", -- replaced later
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is_ground_content = false,
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sunlight_propagates = true,
paramtype = "light",
walkable = true,
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groups = {dig_immediate = 2, mesecon = 3, overheat = 1},
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drop = "mesecons_fpga:fpga0000",
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)
local is = { {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {}, {} }
meta:set_string("instr", lcore.serialize(is))
meta:set_int("valid", 0)
meta:set_string("infotext", "FPGA")
end,
on_rightclick = function(pos, _, clicker)
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if not minetest.is_player(clicker) then
return
end
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local meta = minetest.get_meta(pos)
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local name = clicker:get_player_name()
-- Erase formspecs of old FPGAs
meta:set_string("formspec", "")
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plg.open_formspecs[name] = pos
local is = lcore.deserialize(meta:get_string("instr"))
minetest.show_formspec(name, "mesecons:fpga", plg.to_formspec_string(is, nil))
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end,
sounds = mesecon.node_sound.stone,
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mesecons = {
effector = {
rules = {}, -- replaced later
action_change = function(pos, _, rule, newstate)
if plg.ports_changed(pos, rule, newstate) then
plg.update(pos)
end
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end
}
},
after_dig_node = function(pos, node)
mesecon.receptor_off(pos, plg.rules[node.name])
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for name, open_pos in pairs(plg.open_formspecs) do
if vector.equals(pos, open_pos) then
minetest.close_formspec(name, "mesecons:fpga")
plg.open_formspecs[name] = nil
end
end
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end,
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on_blast = mesecon.on_blastnode,
on_rotate = function(pos, _, user, mode)
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local abcd1 = {"A", "B", "C", "D"}
local abcd2 = {A = 1, B = 2, C = 3, D = 4}
local ops = {"op1", "op2", "dst"}
local dir = 0
if mode == screwdriver.ROTATE_FACE then -- clock-wise
dir = 1
if user and user:is_player() then
minetest.chat_send_player(user:get_player_name(),
"FPGA ports have been rotated clockwise.")
end
elseif mode == screwdriver.ROTATE_AXIS then -- counter-clockwise
dir = -1
if user and user:is_player() then
minetest.chat_send_player(user:get_player_name(),
"FPGA ports have been rotated counter-clockwise.")
end
end
local meta = minetest.get_meta(pos)
local instr = lcore.deserialize(meta:get_string("instr"))
for i = 1, #instr do
for _, op in ipairs(ops) do
local o = instr[i][op]
if o and o.type == "io" then
local num = abcd2[o.port]
num = num + dir
if num > 4 then num = 1
elseif num < 1 then num = 4 end
instr[i][op].port = abcd1[num]
end
end
end
meta:set_string("instr", lcore.serialize(instr))
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plg.update_meta(pos, instr)
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return true
end,
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})
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plg.to_formspec_string = function(is, err)
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local function dropdown_op(x, y, name, val)
local s = "dropdown[" .. tostring(x) .. "," .. tostring(y) .. ";"
.. "0.75,0.5;" .. name .. ";" -- the height seems to be ignored?
s = s .. " ,A,B,C,D,0,1,2,3,4,5,6,7,8,9;"
if val == nil then
s = s .. "0" -- actually selects no field at all
elseif val.type == "io" then
local mapping = {
["A"] = 1,
["B"] = 2,
["C"] = 3,
["D"] = 4,
}
s = s .. tostring(1 + mapping[val.port])
else -- "reg"
s = s .. tostring(6 + val.n)
end
return s .. "]"
end
local function dropdown_action(x, y, name, val)
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local selected = 0
local titles = { " " }
for i, data in ipairs(lcore.get_operations()) do
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titles[i + 1] = data.fs_name
if val == data.gate then
selected = i + 1
end
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end
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return ("dropdown[%f,%f;1.125,0.5;%s;%s;%i]"):format(
x, y, name, table.concat(titles, ","), selected)
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end
local s = "size[9,9]"..
"label[3.4,-0.15;FPGA gate configuration]"..
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"button[7,7.5;2,2.5;program;Program]"..
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"box[4.2,0.5;0.03,7;#ffffff]"..
"label[0.25,0.25;op. 1]"..
"label[1.0,0.25;gate type]"..
"label[2.125,0.25;op. 2]"..
"label[3.15,0.25;dest]"..
"label[4.5,0.25;op. 1]"..
"label[5.25,0.25;gate type]"..
"label[6.375,0.25;op. 2]"..
"label[7.4,0.25;dest]"
local x = 1 - 0.75
local y = 1 - 0.25
for i = 1, 14 do
local cur = is[i]
s = s .. dropdown_op (x , y, tostring(i).."op1", cur.op1)
s = s .. dropdown_action(x+0.75 , y, tostring(i).."act", cur.action)
s = s .. dropdown_op (x+1.875, y, tostring(i).."op2", cur.op2)
s = s .. "label[" .. tostring(x+2.625) .. "," .. tostring(y+0.1) .. "; ->]"
s = s .. dropdown_op (x+2.9 , y, tostring(i).."dst", cur.dst)
y = y + 1
if i == 7 then
x = 4.5
y = 1 - 0.25
end
end
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if err then
local fmsg = minetest.colorize("#ff0000", minetest.formspec_escape(err.msg))
s = s .. plg.red_box_around(err.i) ..
"label[0.25,8.25;The gate configuration is erroneous in the marked area:]"..
"label[0.25,8.5;" .. fmsg .. "]"
end
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return s
end
plg.from_formspec_fields = function(fields)
local function read_op(s)
if s == nil or s == " " then
return nil
elseif s == "A" or s == "B" or s == "C" or s == "D" then
return {type = "io", port = s}
else
return {type = "reg", n = tonumber(s)}
end
end
local function read_action(s)
for i, data in ipairs(lcore.get_operations()) do
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if data.fs_name == s then
return data.gate
end
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end
end
local is = {}
for i = 1, 14 do
local cur = {}
cur.op1 = read_op(fields[tonumber(i) .. "op1"])
cur.action = read_action(fields[tonumber(i) .. "act"])
cur.op2 = read_op(fields[tonumber(i) .. "op2"])
cur.dst = read_op(fields[tonumber(i) .. "dst"])
is[#is + 1] = cur
end
return is
end
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plg.update_meta = function(pos, is)
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if type(is) == "string" then -- serialized string
is = lcore.deserialize(is)
end
local meta = minetest.get_meta(pos)
local err = lcore.validate(is)
if err == nil then
meta:set_int("valid", 1)
meta:set_string("infotext", "FPGA (functional)")
else
meta:set_int("valid", 0)
meta:set_string("infotext", "FPGA")
end
-- reset ports and run programmed logic
plg.setports(pos, false, false, false, false)
plg.update(pos)
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-- Refresh open formspecs
local form = plg.to_formspec_string(is, err)
for name, open_pos in pairs(plg.open_formspecs) do
if vector.equals(pos, open_pos) then
minetest.show_formspec(name, "mesecons:fpga", form)
end
end
return err
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end
plg.red_box_around = function(i)
local x, y
if i > 7 then
x = 4.5
y = 0.75 + (i - 8)
else
x = 0.25
y = 0.75 + (i - 1)
end
return string.format("box[%f,%f;3.8,0.8;#ff0000]", x-0.1, y-0.05)
end
plg.update = function(pos)
local meta = minetest.get_meta(pos)
if meta:get_int("valid") ~= 1 then
return
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elseif mesecon.do_overheat(pos) then
plg.setports(pos, false, false, false, false)
meta:set_int("valid", 0)
meta:set_string("infotext", "FPGA (overheated)")
return
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end
local is = lcore.deserialize(meta:get_string("instr"))
local A, B, C, D = plg.getports(pos)
A, B, C, D = lcore.interpret(is, A, B, C, D)
plg.setports(pos, A, B, C, D)
end
-- Updates the port states according to the signal change.
-- Returns whether the port states actually changed.
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plg.ports_changed = function(pos, rule, newstate)
if rule == nil then return false end
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local meta = minetest.get_meta(pos)
local states
local s = meta:get_string("portstates")
if s == nil then
states = {false, false, false, false}
else
states = {
s:sub(1, 1) == "1",
s:sub(2, 2) == "1",
s:sub(3, 3) == "1",
s:sub(4, 4) == "1",
}
end
-- trick to transform rules (see register_node) into port number
local portno = ({4, 1, nil, 3, 2})[3 + rule.x + 2*rule.z]
states[portno] = (newstate == "on")
local new_portstates =
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(states[1] and "1" or "0") .. (states[2] and "1" or "0") ..
(states[3] and "1" or "0") .. (states[4] and "1" or "0")
if new_portstates ~= s then
meta:set_string("portstates", new_portstates)
return true
end
return false
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end
plg.getports = function(pos) -- gets merged states of INPUT & OUTPUT
local sin, sout
local s = minetest.get_meta(pos):get_string("portstates")
if s == nil then
sin = {false, false, false, false}
else
sin = {
s:sub(1, 1) == "1",
s:sub(2, 2) == "1",
s:sub(3, 3) == "1",
s:sub(4, 4) == "1",
}
end
local name = minetest.get_node(pos).name
assert(name:find("mesecons_fpga:fpga") == 1)
local off = #"mesecons_fpga:fpga"
sout = {
name:sub(off+4, off+4) == "1",
name:sub(off+3, off+3) == "1",
name:sub(off+2, off+2) == "1",
name:sub(off+1, off+1) == "1",
}
return unpack({
sin[1] or sout[1],
sin[2] or sout[2],
sin[3] or sout[3],
sin[4] or sout[4],
})
end
plg.setports = function(pos, A, B, C, D) -- sets states of OUTPUT
local base = "mesecons_fpga:fpga"
local name = base
.. (D and "1" or "0") .. (C and "1" or "0")
.. (B and "1" or "0") .. (A and "1" or "0")
minetest.swap_node(pos, {name = name, param2 = minetest.get_node(pos).param2})
if A ~= nil then
local ru = plg.rules[base .. "0001"]
if A then mesecon.receptor_on(pos, ru) else mesecon.receptor_off(pos, ru) end
end
if B ~= nil then
local ru = plg.rules[base .. "0010"]
if B then mesecon.receptor_on(pos, ru) else mesecon.receptor_off(pos, ru) end
end
if C ~= nil then
local ru = plg.rules[base .. "0100"]
if C then mesecon.receptor_on(pos, ru) else mesecon.receptor_off(pos, ru) end
end
if D ~= nil then
local ru = plg.rules[base .. "1000"]
if D then mesecon.receptor_on(pos, ru) else mesecon.receptor_off(pos, ru) end
end
end
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minetest.register_on_player_receive_fields(function(player, formname, fields)
local player_name = player:get_player_name()
if formname ~= "mesecons:fpga" or fields.quit then
plg.open_formspecs[player_name] = nil -- potential garbage
return
end
if not fields.program then
return -- we only care when the user clicks "Program"
end
local pos = plg.open_formspecs[player_name]
if minetest.is_protected(pos, player_name) then
minetest.record_protection_violation(pos, player_name)
return
end
local meta = minetest.get_meta(pos)
local is = plg.from_formspec_fields(fields)
meta:set_string("instr", lcore.serialize(is))
local err = plg.update_meta(pos, is)
if not err then
plg.open_formspecs[player_name] = nil
-- Close on success
minetest.close_formspec(player_name, "mesecons:fpga")
end
end)
minetest.register_on_leaveplayer(function(player)
plg.open_formspecs[player:get_player_name()] = nil
end)
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minetest.register_craft({
output = "mesecons_fpga:fpga0000 2",
recipe = {
{'group:mesecon_conductor_craftable', 'group:mesecon_conductor_craftable'},
{'mesecons_materials:silicon', 'mesecons_materials:silicon'},
{'group:mesecon_conductor_craftable', 'group:mesecon_conductor_craftable'},
}
})