random_messages/init.lua

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--[[
RandomMessages mod by arsdragonfly.
arsdragonfly@gmail.com
6/19/2013
--]]
--Time between two subsequent messages.
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local MESSAGE_INTERVAL = 0
-- Added default messages file
local default_messages_file = "default_random_messages"
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math.randomseed(os.time())
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random_messages = {}
random_messages.messages = {} --This table contains all messages.
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-- Load support for intllib.
local MP = minetest.get_modpath(minetest.get_current_modname())
local S, NS = dofile(MP.."/intllib.lua")
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function table.count( t )
local i = 0
for k in pairs( t ) do i = i + 1 end
return i
end
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function table.random( t )
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local rk = math.random( 1, table.count( t ) )
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local i = 1
for k, v in pairs( t ) do
if ( i == rk ) then return v, k end
i = i + 1
end
end
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function random_messages.initialize() --Set the interval in minetest.conf.
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minetest.settings:set("random_messages_interval",120)
minetest.settings:save();
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return 120
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end
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function random_messages.set_interval() --Read the interval from minetest.conf(set it if it doesn'st exist)
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MESSAGE_INTERVAL = tonumber(minetest.settings:get("random_messages_interval")) or random_messages.initialize()
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end
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function random_messages.check_params(name,func,params)
local stat,msg = func(params)
if not stat then
minetest.chat_send_player(name,msg)
return false
end
return true
end
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function random_messages.read_messages()
local line_number = 1
-- define input
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local input = io.open(minetest.get_worldpath().."/random_messages","r")
-- no input file found
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if not input then
-- look for default file
local default_input = io.open(minetest.get_modpath("random_messages").."/"..default_messages_file,"r")
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local output = io.open(minetest.get_worldpath().."/random_messages","w")
if not default_input then
-- blame the admin if not found
output:write(S("Blame the server admin! He/She has probably not edited the random messages yet.\n"))
output:write(S("Tell your dumb admin that this line is in (worldpath)/random_messages\n"))
return
else
-- or write default_input content in worldpath message file
local content = default_input:read("*all")
output:write(content)
end
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io.close(output)
io.close(default_input)
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input = io.open(minetest.get_worldpath().."/random_messages","r")
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end
-- we should have input by now, so lets read it
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for line in input:lines() do
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random_messages.messages[line_number] = line
line_number = line_number + 1
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end
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io.close(input)
end
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function random_messages.display_message(message_number)
local msg = random_messages.messages[message_number] or message_number
if msg then
minetest.chat_send_all(msg)
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end
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end
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function random_messages.show_message()
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random_messages.display_message(table.random(random_messages.messages))
end
function random_messages.list_messages()
local str = ""
for k,v in pairs(random_messages.messages) do
str = str .. k .. " | " .. v .. "\n"
end
return str
end
function random_messages.remove_message(k)
table.remove(random_messages.messages,k)
random_messages.save_messages()
end
function random_messages.add_message(t)
table.insert(random_messages.messages,table.concat(t," ",2))
random_messages.save_messages()
end
function random_messages.save_messages()
local output = io.open(minetest.get_worldpath().."/random_messages","w")
for k,v in pairs(random_messages.messages) do
output:write(v .. "\n")
end
io.close(output)
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end
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--When server starts:
random_messages.set_interval()
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random_messages.read_messages()
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local TIMER = 0
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if random_messages.messages[1] then
minetest.register_globalstep(function(dtime)
TIMER = TIMER + dtime;
if TIMER > MESSAGE_INTERVAL then
random_messages.show_message()
TIMER = 0
end
end)
end
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local register_chatcommand_table = {
params = "viewmessages | removemessage <number> | addmessage <number>",
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privs = {server = true},
description = S("View and/or alter the server's random messages"),
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func = function(name,param)
local t = string.split(param, " ")
if t[1] == "viewmessages" then
minetest.chat_send_player(name,random_messages.list_messages())
elseif t[1] == "removemessage" then
if not random_messages.check_params(
name,
function (params)
if not tonumber(params[2]) or
random_messages.messages[tonumber(params[2])] == nil then
return false,S("ERROR: No such message.")
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end
return true
end,
t) then return end
random_messages.remove_message(t[2])
elseif t[1] == "addmessage" then
if not t[2] then
minetest.chat_send_player(name,S("ERROR: No message."))
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else
random_messages.add_message(t)
end
else
minetest.chat_send_player(name,S("ERROR: Invalid command."))
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end
end
}
minetest.register_chatcommand("random_messages", register_chatcommand_table)
minetest.register_chatcommand("rmessages", register_chatcommand_table)