add mod random_messages

mods/random_messages/depends.txt

+default

mods/random_messages/init.lua

+--[[
+RandomMessages mod by arsdragonfly.
+arsdragonfly@gmail.com
+6/19/2013
+--]]
+--Time between two subsequent messages.
+local MESSAGE_INTERVAL = 0
+
+math.randomseed(os.time())
+
+random_messages = {}
+random_messages.messages = {} --This table contains all messages.
+
+function table.count( t )
+	local i = 0
+	for k in pairs( t ) do i = i + 1 end
+	return i
+end
+
+function table.random( t )
+	local rk = math.random( 1, table.count( t ) )
+	local i = 1
+	for k, v in pairs( t ) do
+		if ( i == rk ) then return v, k end
+		i = i + 1
+	end
+end
+
+function random_messages.initialize() --Set the interval in minetest.conf.
+	minetest.setting_set("random_messages_interval",300)
+	minetest.setting_save();
+	return 300
+end
+
+function random_messages.set_interval() --Read the interval from minetest.conf(set it if it doesn'st exist)
+	MESSAGE_INTERVAL = tonumber(minetest.setting_get("random_messages_interval")) or random_messages.initialize()
+end
+
+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
+
+function random_messages.read_messages()
+	random_messages.messages = {
+		"# Illuna-Notes: Soup is very useful to fight hunger, everyone should have some.",
+		"# Illuna-Notes: Meet your fellows on our Mumbleserver at tchncs.de",
+		"# Illuna-Notes: Enjoy Illuna? Invite your friends today!",
+		"# Illuna-Notes: Have something to share? Create and join discussion at the Illuna forum: https://forum.illuna-minetest.tk!",
+        "# Illuna-Notes: Sell and buy stuff on the Illuna marketplace. It is below the spawnhouse."
+	}
+end
+
+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)
+	end
+end
+
+function random_messages.show_message()
+	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)
+end
+
+--When server starts:
+random_messages.set_interval()
+random_messages.read_messages()
+
+local TIMER = 0
+minetest.register_globalstep(function(dtime)
+	TIMER = TIMER + dtime;
+	if TIMER > MESSAGE_INTERVAL then
+		random_messages.show_message()
+		TIMER = 0
+	end
+end)
+
+local register_chatcommand_table = {
+	params = "viewmessages | removemessage <number> | addmessage <number>",
+	privs = {server = true},
+	description = "View and/or alter the server's random messages",
+	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,"ERROR: No such message."
+				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,"ERROR: No message.")
+			else
+				random_messages.add_message(t)
+			end
+		else
+				minetest.chat_send_player(name,"ERROR: Invalid command.")
+		end
+	end
+}
+
+minetest.register_chatcommand("random_messages", register_chatcommand_table)
+minetest.register_chatcommand("rmessages", register_chatcommand_table)

mods/random_messages/readme.md

+RandomMessages mod by arsdragonfly.
+Put your messages in (world directory)/random_messages,1 message per line.
+Messages can be all kinds of hints, mod usage, etc.
+Add/Remove messages on the fly:
+/rmessages viewmessages
+to see all the messages.
+/rmessages addmessage blah blah blah
+to add the random message blah blah blah.
+/rmessages removemessage 2
+to remove the 2nd random message in /rmessages viewmessages .
+In minetest.conf, random_messages_interval decides how often a message is sent.
+Released under CC0.
+Special thanks to:
+Michael Rasmussen (michael@jamhome.us)
+Enjoy it! ^_^
+arsdragonfly@gmail.com
+6/19/2013
\ No newline at end of file