mirror of
https://github.com/mt-mods/led_marquee.git
synced 2024-11-15 06:10:21 +01:00
452102cc7c
instead of string.char(0-27), use "/" as an escape followed by
"[0-9][A-R][a-r]", all inside the string.
e.g. digiline_send("chan", "/0this /1is /2some /3colorful /4text")
"/" followed by any other character than the above will be treated as an
invalid color code and will be taken literally.
"//" will print a single slash.
Note: on receipt, all instances of "//" in a message are actually
translated to string.char(30) -- one for each pair. This makes the
scrolling code easier. Keep this in mind if you use the "getstr" and
"getindex" commands.
Also, this expands the max string length to 6 kB, to allow a full 80x25
display with one color code er character. "clear" and "allon" remain at
2kB since that's still enough.
411 lines
11 KiB
Lua
411 lines
11 KiB
Lua
-- simple LED marquee mod
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-- by Vanessa Dannenberg
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led_marquee = {}
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local S
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if minetest.get_modpath("intllib") then
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S = intllib.make_gettext_pair()
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else
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S = function(s) return s end
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end
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local color_to_char = {
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"0",
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"1",
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"2",
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"3",
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"4",
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"5",
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"6",
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"7",
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"8",
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"9",
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"A",
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"B",
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"C",
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"D",
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"E",
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"F",
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"G",
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"H",
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"I",
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"J",
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"K",
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"L",
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"M",
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"N",
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"O",
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"P",
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"Q",
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"R"
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}
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local char_to_color = {
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["0"] = 0,
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["1"] = 1,
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["2"] = 2,
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["3"] = 3,
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["4"] = 4,
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["5"] = 5,
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["6"] = 6,
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["7"] = 7,
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["8"] = 8,
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["9"] = 9,
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["A"] = 10,
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["B"] = 11,
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["C"] = 12,
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["D"] = 13,
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["E"] = 14,
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["F"] = 15,
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["G"] = 16,
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["H"] = 17,
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["I"] = 18,
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["J"] = 19,
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["K"] = 20,
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["L"] = 21,
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["M"] = 22,
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["N"] = 23,
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["O"] = 24,
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["P"] = 25,
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["Q"] = 26,
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["R"] = 27
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}
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-- the following functions based on the so-named ones in Jeija's digilines mod
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local reset_meta = function(pos)
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minetest.get_meta(pos):set_string("formspec", "field[channel;Channel;${channel}]")
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end
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local on_digiline_receive_std = function(pos, node, channel, msg)
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local meta = minetest.get_meta(pos)
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local setchan = meta:get_string("channel")
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if setchan ~= channel then return end
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local num = tonumber(msg)
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if msg == "colon" or msg == "period" or msg == "off" or (num and (num >= 0 and num <= 9)) then
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minetest.swap_node(pos, { name = "led_marquee:marquee_"..msg, param2 = node.param2})
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end
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end
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-- convert Lua's idea of a UTF-8 char to ISO-8859-1
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-- first char is non-break space, 0xA0
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local iso_chars=" ¡¢£¤¥¦§¨©ª«¬®¯°±²³´µ¶·¸¹º»¼½¾¿ÀÁÂÃÄÅÆÇÈÉÊËÌÍÎÏÐÑÒÓÔÕÖ×ØÙÚÛÜÝÞßàáâãäåæçèéêëìíîïðñòóôõö÷øùúûüýþÿ"
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local get_iso = function(c)
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local hb = string.byte(c,1) or 0
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local lb = string.byte(c,2) or 0
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local dec = lb+hb*256
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local char = dec - 49664
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if dec > 49855 then char = dec - 49856 end
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return char
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end
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local make_iso = function(s)
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local i = 1
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local s2 = ""
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while i <= string.len(s) do
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if string.byte(s,i) > 159 then
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s2 = s2..string.char(get_iso(string.sub(s, i, i+1)))
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i = i + 2
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else
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s2 = s2..string.sub(s, i, i)
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i = i + 1
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end
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end
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return s2
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end
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-- scrolling
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led_marquee.set_timer = function(pos, timeout)
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local timer = minetest.get_node_timer(pos)
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timer:stop()
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if timeout > 0 then
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local meta = minetest.get_meta(pos)
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timer:start(timeout)
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end
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end
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led_marquee.scroll_text = function(pos, elapsed, skip)
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local meta = minetest.get_meta(pos)
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local msg = meta:get_string("last_msg")
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local channel = meta:get_string("channel")
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local index = meta:get_int("index")
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local color = meta:get_int("last_color")
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local colorchar = color_to_char[color+1]
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if not index or index < 1 or not string.byte(msg, index) then index = 1 end
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local len = string.len(msg)
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skip = skip or 1
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index = index + skip
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-- search backward to find the most recent color code in the string
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local r = index
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while r > 0 and not string.match(string.sub(msg, r, r+1), "/[0-9A-Ra-r]") do
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r = r - 1
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end
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if r == 0 then r = 1 end
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if string.match(string.sub(msg, r, r+1), "/[0-9A-Ra-r]") then
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colorchar = string.sub(msg, r+1, r+1)
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end
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-- search forward to find the next printable symbol after the current index
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local f = index
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while f < len do
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if string.match(string.sub(msg, f, f+1), "/[0-9A-Ra-r]") then
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f = f + 2
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else
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break
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end
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end
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led_marquee.display_msg(pos, channel, "/"..colorchar..string.sub(msg, f)..string.rep(" ", skip + 1))
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meta:set_int("index", f)
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if not elapsed or elapsed < 0.5 then return false end
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return true
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end
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-- the nodes:
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local fdir_to_right = {
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{ 0, -1 },
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{ 0, -1 },
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{ 0, -1 },
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{ 0, 1 },
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{ 1, 0 },
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{ -1, 0 },
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}
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local cbox = {
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type = "wallmounted",
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wall_top = { -8/16, 7/16, -8/16, 8/16, 8/16, 8/16 },
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wall_bottom = { -8/16, -8/16, -8/16, 8/16, -7/16, 8/16 },
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wall_side = { -8/16, -8/16, -8/16, -7/16, 8/16, 8/16 }
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}
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led_marquee.decode_color = function(msg)
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end
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led_marquee.display_msg = function(pos, channel, msg)
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msg = string.sub(msg, 1, 6144).." "
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if string.sub(msg,1,1) == string.char(255) then -- treat it as incoming UTF-8
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msg = make_iso(string.sub(msg, 2, 6144))
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end
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local master_fdir = minetest.get_node(pos).param2 % 8
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local master_meta = minetest.get_meta(pos)
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local last_color = master_meta:get_int("last_color")
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local pos2 = table.copy(pos)
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if not last_color or last_color < 0 or last_color > 27 then
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last_color = 0
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master_meta:set_int("last_color", 0)
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end
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local i = 1
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local len = string.len(msg)
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local wrapped = nil
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while i <= len do
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local node = minetest.get_node(pos2)
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local fdir = node.param2 % 8
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local meta = minetest.get_meta(pos2)
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local setchan = nil
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if meta then setchan = meta:get_string("channel") end
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local asc = string.byte(msg, i, i)
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if not string.match(node.name, "led_marquee:char_") then
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if not wrapped then
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pos2.x = pos.x
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pos2.y = pos2.y-1
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pos2.z = pos.z
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wrapped = true
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else
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break
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end
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elseif string.match(node.name, "led_marquee:char_")
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and fdir ~= master_fdir or (setchan ~= nil and setchan ~= "" and setchan ~= channel) then
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break
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elseif asc == 28 then
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pos2.x = pos.x
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pos2.y = pos2.y-1
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pos2.z = pos.z
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i = i + 1
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wrapped = nil
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elseif asc == 29 then
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local c = string.byte(msg, i+1, i+1) or 0
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local r = string.byte(msg, i+2, i+2) or 0
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pos2.x = pos.x + (fdir_to_right[fdir+1][1])*c
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pos2.y = pos.y - r
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pos2.z = pos.z + (fdir_to_right[fdir+1][2])*c
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i = i + 3
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wrapped = nil
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elseif asc == 30 then -- translate to slash for printing
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minetest.swap_node(pos2, { name = "led_marquee:char_47", param2 = master_fdir + (last_color*8)})
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pos2.x = pos2.x + fdir_to_right[fdir+1][1]
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pos2.z = pos2.z + fdir_to_right[fdir+1][2]
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i = i + 1
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elseif asc == 47 then -- slash
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local ccode = string.sub(msg, i+1, i+1)
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if ccode then
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if char_to_color[ccode] then
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last_color = char_to_color[ccode]
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i = i + 2
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else
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minetest.swap_node(pos2, { name = "led_marquee:char_47", param2 = master_fdir + (last_color*8)})
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pos2.x = pos2.x + fdir_to_right[fdir+1][1]
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pos2.z = pos2.z + fdir_to_right[fdir+1][2]
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i = i + 1
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end
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end
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master_meta:set_int("last_color", last_color)
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wrapped = nil
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elseif asc > 30 and asc < 256 then
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minetest.swap_node(pos2, { name = "led_marquee:char_"..asc, param2 = master_fdir + (last_color*8)})
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pos2.x = pos2.x + fdir_to_right[fdir+1][1]
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pos2.z = pos2.z + fdir_to_right[fdir+1][2]
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i = i + 1
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wrapped = nil
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end
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end
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end
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local on_digiline_receive_string = function(pos, node, channel, msg)
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local meta = minetest.get_meta(pos)
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local setchan = meta:get_string("channel")
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local last_color = meta:get_int("last_color")
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if not last_color or last_color < 0 or last_color > 27 then
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last_color = 0
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meta:set_int("last_color", 0)
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end
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local fdir = node.param2 % 8
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if setchan ~= channel then return end
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if msg and msg ~= "" and type(msg) == "string" then
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if string.len(msg) > 1 then
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if msg == "clear" then
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led_marquee.set_timer(pos, 0)
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msg = string.rep(" ", 2048)
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meta:set_string("last_msg", msg)
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led_marquee.display_msg(pos, channel, msg)
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meta:set_int("index", 1)
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elseif msg == "allon" then
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led_marquee.set_timer(pos, 0)
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msg = string.rep(string.char(144), 2048)
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meta:set_string("last_msg", msg)
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led_marquee.display_msg(pos, channel, msg)
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meta:set_int("index", 1)
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elseif msg == "start_scroll" then
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local timeout = meta:get_int("timeout")
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if not timeout or timeout < 0.5 or timeout > 5 then timeout = 0 end
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led_marquee.set_timer(pos, timeout)
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elseif msg == "stop_scroll" then
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led_marquee.set_timer(pos, 0)
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return
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elseif string.sub(msg, 1, 12) == "scroll_speed" then
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local timeout = tonumber(string.sub(msg, 13))
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if not timeout or timeout < 0.5 or timeout > 5 then timeout = 0 end
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meta:set_int("timeout", timeout)
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led_marquee.set_timer(pos, timeout)
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elseif string.sub(msg, 1, 11) == "scroll_step" then
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local skip = tonumber(string.sub(msg, 12))
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led_marquee.scroll_text(pos, nil, skip)
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elseif msg == "get" then -- get the master panel's displayed char as ASCII numerical value
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digilines.receptor_send(pos, digiline.rules.default, channel, tonumber(string.match(minetest.get_node(pos).name,"led_marquee:char_(.+)"))) -- wonderfully horrible string manipulaiton
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elseif msg == "getstr" then -- get the last stored message
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digilines.receptor_send(pos, digiline.rules.default, channel, meta:get_string("last_msg"))
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elseif msg == "getindex" then -- get the scroll index
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digilines.receptor_send(pos, digiline.rules.default, channel, meta:get_int("index"))
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else
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msg = string.gsub(msg, "//", string.char(30))
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led_marquee.set_timer(pos, 0)
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meta:set_string("last_msg", msg)
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led_marquee.display_msg(pos, channel, msg)
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meta:set_int("index", 1)
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end
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else
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local asc = string.byte(msg)
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if asc > 29 and asc < 256 then
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minetest.swap_node(pos, { name = "led_marquee:char_"..asc, param2 = fdir + (last_color*8)})
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meta:set_string("last_msg", tostring(msg))
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meta:set_int("index", 1)
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end
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end
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elseif msg and type(msg) == "number" then
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meta:set_string("last_msg", tostring(msg))
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led_marquee.display_msg(pos, channel, tostring(msg))
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meta:set_int("index", 1)
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end
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end
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-- the nodes!
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for i = 31, 255 do
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local groups = { cracky = 2, not_in_creative_inventory = 1}
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local light = LIGHT_MAX-2
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local description = S("Alphanumeric LED marquee panel ("..i..")")
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local tiles = {
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{ name="led_marquee_base.png", color="white"},
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{ name="led_marquee_leds_off.png", color="white"},
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"led_marquee_char_"..i..".png",
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}
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if i == 31 then
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tiles = {
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{ name="led_marquee_base.png", color="white"},
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{ name="led_marquee_leds_off.png", color="white"},
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{
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name = "led_marquee_char_31.png",
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animation = {type = "vertical_frames", aspect_w = 32, aspect_h = 32, length = 0.75}
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}
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}
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end
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if i == 32 then
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groups = {cracky = 2}
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light = nil
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description = S("Alphanumeric LED marquee panel")
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end
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minetest.register_node("led_marquee:char_"..i, {
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description = description,
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drawtype = "mesh",
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mesh = "led_marquee.obj",
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tiles = tiles,
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palette="led_marquee_palette.png",
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use_texture_alpha = true,
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groups = groups,
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paramtype = "light",
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paramtype2 = "colorwallmounted",
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light_source = light,
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selection_box = cbox,
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node_box = cbox,
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on_construct = function(pos)
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reset_meta(pos)
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end,
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on_receive_fields = function(pos, formname, fields, sender)
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if (fields.channel) then
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minetest.get_meta(pos):set_string("channel", fields.channel)
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end
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end,
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digiline = {
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receptor = {},
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effector = {
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action = on_digiline_receive_string,
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},
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},
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drop = "led_marquee:char_32",
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on_timer = led_marquee.scroll_text
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})
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end
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-- crafts
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minetest.register_craft({
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output = "led_marquee:char_32 6",
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recipe = {
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{ "default:glass", "default:glass", "default:glass" },
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{ "mesecons_lamp:lamp_off", "mesecons_lamp:lamp_off", "mesecons_lamp:lamp_off" },
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{ "group:wood", "mesecons_microcontroller:microcontroller0000", "group:wood" }
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},
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})
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