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local modstorage = core.get_mod_storage()
local register_on_message = core.register_on_sending_chat_message
if core.register_on_sending_chat_messages then
register_on_message = core.register_on_sending_chat_messages
end
local function rgb_to_hex(rgb)
local hexadecimal = '#'
for key, value in pairs(rgb) do
local hex = ''
while(value > 0)do
local index = math.fmod(value, 16) + 1
value = math.floor(value / 16)
hex = string.sub('0123456789ABCDEF', index, index) .. hex
end
if(string.len(hex) == 0)then
hex = '00'
elseif(string.len(hex) == 1)then
hex = '0' .. hex
end
hexadecimal = hexadecimal .. hex
end
return hexadecimal
end
local function color_from_hue(hue)
local h = hue / 60
local c = 255
local x = (1 - math.abs(h%2 - 1)) * 255
local i = math.floor(h);
if (i == 0) then
return rgb_to_hex({c, x, 0})
elseif (i == 1) then
return rgb_to_hex({x, c, 0})
elseif (i == 2) then
return rgb_to_hex({0, c, x})
elseif (i == 3) then
return rgb_to_hex({0, x, c});
elseif (i == 4) then
return rgb_to_hex({x, 0, c});
else
return rgb_to_hex({c, 0, x});
end
end
local function pastel_from_hue(hue)
local h = hue / 60
local c = 255
local d = 192
local x = (1 - math.abs(h%2 - 1)) * 255
local i = math.floor(h);
if (i == 0) then
return rgb_to_hex({c, x, d})
elseif (i == 1) then
return rgb_to_hex({x, c, d})
elseif (i == 2) then
return rgb_to_hex({d, c, x})
elseif (i == 3) then
return rgb_to_hex({d, x, c});
elseif (i == 4) then
return rgb_to_hex({x, d, c});
else
return rgb_to_hex({c, d, x});
end
end
function hex2rgb(hex) -- added - found on github
hex = hex:gsub("#","")
return {tonumber("0x"..hex:sub(1,2)), tonumber("0x"..hex:sub(3,4)), tonumber("0x"..hex:sub(5,6))}
end
local function color_step(pos, col1, col2) -- added - gets a color between colors
local rgb1 = hex2rgb(col1)
local rgb2 = hex2rgb(col2)
local rgb = {}
for i, v in pairs(rgb1) do
rgb[i] = rgb1[i]+(rgb2[i]-rgb1[i])*(pos/255)
end
return rgb_to_hex(rgb)
end
local function canTalk()
if core.get_privilege_list then
return core.get_privilege_list().shout
else
return true
end
end
local function say(message)
if not canTalk() then
minetest.display_chat_message("You need 'shout' in order to talk")
return
end
minetest.send_chat_message(message)
if minetest.get_server_info().protocol_version < 29 then
local name = minetest.localplayer:get_name()
minetest.display_chat_message("<"..name.."> " .. message)
end
end
function fade(parameter)
local col1 = string.sub(parameter, 1, 7)
local col2 = string.sub(parameter, 9, 15)
local message = string.sub(parameter, 17)
if not canTalk() then
return false, "You need 'shout' in order to use this command"
end
if col1 == col2 then
say(core.get_color_escape_sequence(col1) .. message)
return true
end
local step = 255 / message:len()
local pos = 0
local output = ""
for i = 1, message:len() do
local char = message:sub(i,i)
if char:match("%s") then
output = output .. char
else
output = output .. core.get_color_escape_sequence(color_step(pos, col1, col2)) .. char
end
pos = pos + step
end
say(output)
return true
end
register_on_message(function(message)
if message:sub(1,1) == "/" or modstorage:get_string("colour") == "" or modstorage:get_string("colour") == "white" then
return false
end
fade(modstorage:get_string("colour") .. " " .. message)
return true
end)
core.register_chatcommand("set_colour", {
description = core.gettext("Change chat colour"),
func = function(colour)
if colour:len() == 7 then
modstorage:set_string("colour", colour.." "..colour)
else
modstorage:set_string("colour", colour)
end
return true, "Chat colour changed."
end,
})
core.register_chatcommand("get_colour", {
description = core.gettext("Display chat colour"),
func = function()
local cc = modstorage:get_string("colour")
return true, "Current chat colour: " .. cc
end,
})
core.register_chatcommand("rainbow", {
description = core.gettext("rainbow text"),
func = function(param)
if not canTalk() then
return false, "You need 'shout' in order to use this command"
end
local step = 360 / param:len()
local hue = 0
-- iterate the whole 360 degrees
local output = ""
for i = 1, param:len() do
local char = param:sub(i,i)
if char:match("%s") then
output = output .. char
else
output = output .. core.get_color_escape_sequence(colour_from_hue(hue)) .. char
end
hue = hue + step
end
say(output)
return true
end,
})
core.register_chatcommand("fade", { -- added - fades between any two colors
description = core.gettext("fade message between two colors"),
func = fade,
})
core.register_chatcommand("pastel", {
description = core.gettext("pastel rainbow text"),
func = function(param)
if not canTalk() then
return false, "You need 'shout' in order to use this command"
end
local step = 360 / param:len()
local hue = 0
-- iterate the whole 360 degrees
local output = ""
for i = 1, param:len() do
local char = param:sub(i,i)
if char:match("%s") then
output = output .. char
else
output = output .. core.get_color_escape_sequence(pastel_from_hue(hue)) .. char
end
hue = hue + step
end
say(output)
return true
end,
})
core.register_chatcommand("mw", {
description = core.gettext("moderator warning"),
func = function(param)
if not canTalk() then
return false, "You need 'shout' in order to use this comand"
end
local output = ""
output = core.get_color_escape_sequence("#ffdf00") .. "MODERATOR WARNING: "
output = output .. core.get_color_escape_sequence("#ff7fff") ..param
say(output)
return true
end,
})
core.register_chatcommand("mi", {
description = core.gettext("moderator info"),
func = function(param)
if not canTalk() then
return false, "You need 'shout' in order to use this command"
end
local output = ""
output = core.get_color_escape_sequence("#d0ff00") .. "MODERATOR INFO: "
output = output .. core.get_color_escape_sequence("#dfdfff") .. param
say(output)
return true
end,
})
core.register_chatcommand("rainbow", {
description = core.gettext("rainbow text"),
func = function(param)
if not canTalk() then
return false, "You need 'shout' in order to use this command"
end
local step = 360 / param:len()
local hue = 0
-- iterate the whole 360 degrees
local output = ""
for i = 1, param:len() do
local char = param:sub(i,i)
if char:match("%s") then
output = output .. char
else
output = output .. core.get_color_escape_sequence(color_from_hue(hue)) .. char
end
hue = hue + step
end
say(output)
return true
end,
})
core.register_chatcommand("say", {
description = core.gettext("Send text without applying colour to it"),
func = function(text)
say(text)
return true
end,
})
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