added player list system

mods/playerlist/README.txt

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+Playerlist mod
+==================
+By Kaadmy, for Pixture
+
+Adds player lists(recent/current).
+
+Use the chatcommand "/plist" to show current players
+Use the chatcommand "/precent" to show players that have connected in the last hour
+
+Source license: WTFPL

mods/playerlist/depends.txt

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+default

mods/playerlist/init.lua

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+--
+-- Playerlist mod
+-- By Kaadmy, for Pixture
+--
+
+playerlist = {}
+
+playerlist.step = tonumber(minetest.setting_get("playerlist_step")) or 3
+
+-- current players format:
+-- {<playername> = <last connect(if connected, or nil)>}
+playerlist.players = {}
+
+local function divmod(f, d)
+   return {math.floor(f / d), f % d}
+end
+
+local function prettytime(time)
+   local a = divmod(time, 60)
+   local seconds = a[2]
+   local minutes = a[1]
+
+   local b = divmod(minutes, 60)
+   local hours = b[1]
+   minutes = b[2]
+
+   local c = divmod(hours, 24)
+   local days = c[1]
+   hours = c[2]
+
+   local str = ""
+   if days ~= 0 then str = str .. days .. "d " end
+   if hours ~= 0 then str = str .. hours .. "h " end
+   if minutes ~= 0 then str = str .. minutes .. "m " end
+   str = str .. seconds .. "s"
+
+   return str
+end
+
+local function on_joinplayer(player)
+   local name = player:get_player_name()
+
+   playerlist.players[name] = minetest.get_gametime()
+end
+
+local function on_leaveplayer(player)
+   local name = player:get_player_name()
+
+   playerlist.players[name] = minetest.get_gametime()
+end
+
+minetest.register_on_joinplayer(on_joinplayer)
+minetest.register_on_leaveplayer(on_leaveplayer)
+
+minetest.register_chatcommand(
+   "plist",
+   {
+      description = "List players that are connected and have connected since the last server restart",
+      func = function(name, param)
+		local time = minetest.get_gametime()
+
+		minetest.chat_send_player(name, "Player list:")
+
+		local player_count = 0
+		for name, jointime in pairs(playerlist.players) do
+		   if minetest.get_player_by_name(name) ~= nil then
+		      player_count = player_count + 1
+		      minetest.chat_send_player(name, "  " .. name .. ": connected for " .. prettytime(time - jointime))
+		   else
+		      minetest.chat_send_player(name, "  " .. name .. ": last seen " .. prettytime(time - jointime) .. " ago")
+		   end
+		end
+
+		minetest.chat_send_player(name, player_count .. " players connected")
+	     end
+   })
+default.log("mod:playerlist", "loaded")