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init.lua

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+playerid = {}
+local playerid_read = {}
+local player_has_id = {}
+local lastid = 0
+
+minetest.register_on_joinplayer(function(player)
+	local name = player:get_player_name()
+	if not player_has_id[name] then
+		player_has_id[name] = true
+		local id = lastid+1
+		lastid = id
+		playerid[id] = name
+		playerid_read[id] = name.." ("..id..")"
+	end
+end)
+
+minetest.register_chatcommand("idlist", {
+	privs = {interact=true},
+	func = function(name)
+		minetest.chat_send_player(name, table.concat(playerid_read, ","))
+	end
+})
+
+minetest.register_on_chat_message(function(name, message)
+	if message:sub(1,3) == "/id" then
+		msg = string.split(message, "%s", false, -1, true)
+		msg[1] = msg[1]:gsub("/id", "")
+		local params = ""
+		local new_param
+		local i = 2
+		while msg[i] do
+			msg[i] = msg[i]:gsub("id:", "")
+			if not playerid[tonumber(msg[i])] then
+				msg[i]=msg[i]
+			else
+				msg[i] = playerid[tonumber(msg[i])]
+			end
+			params = params.." "..msg[i]
+			i = i+1
+		end
+		params = params:sub(2, params:len())
+		command = minetest.chatcommands[msg[1]]
+		if command then
+			local has, missing = minetest.check_player_privs(name, command.privs)
+			if has then
+				return command.func(name, params)
+			else
+				minetest.chat_send_player(name, "Fehlende Privilegien: "..dump(missing))
+				return true
+			end
+		else
+			minetest.chat_send_player(name,"Befehl nicht gefunden")
+			return true
+		end
+	end
+end)