mirror of
https://github.com/mt-mods/led_marquee.git
synced 2024-11-24 08:13:52 +01:00
use printable strings for color codes
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.
This commit is contained in:
Vanessa Dannenberg
parent
bee8d5c32d
commit
452102cc7c
133
init.lua
133
init.lua
@ -10,6 +10,68 @@ 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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@ -71,31 +133,35 @@ led_marquee.scroll_text = function(pos, elapsed, skip)
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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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while index < len and string.byte(msg, index) < 28 do
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index = index + 1
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if index > len then index = 1 break end
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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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if string.byte(msg, index - 1) < 28 then
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led_marquee.display_msg(pos, channel, string.sub(msg, index - 1)..string.rep(" ", skip + 1))
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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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local i = index - 1
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local color = ""
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while i > 0 and string.byte(msg, i) > 27 do
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i = i - 1
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if i == 0 then break end
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break
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end
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if i > 0 then color = string.sub(msg, i, i) end
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led_marquee.display_msg(pos, channel, color..string.sub(msg, index)..string.rep(" ", skip + 1))
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end
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meta:set_int("index", index)
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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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@ -118,10 +184,14 @@ local cbox = {
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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, 4096)
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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, 4096))
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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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@ -168,17 +238,32 @@ led_marquee.display_msg = function(pos, channel, msg)
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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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elseif asc < 28 then
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last_color = asc
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master_meta:set_int("last_color", asc)
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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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@ -230,6 +315,7 @@ local on_digiline_receive_string = function(pos, node, channel, 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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@ -237,13 +323,10 @@ local on_digiline_receive_string = function(pos, node, channel, msg)
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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 > 30 and asc < 256 then
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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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elseif asc < 28 then
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last_color = asc
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meta:set_int("last_color", asc)
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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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