GlobalEvent Event... for TFS 0.3.

	<globalevent name="event" interval="10800" script="event.lua"/> <!-- 3 hours -->

local timeToCreate = 20 -- minutes
local walls = {
	{ x = 229, y = 562, z = 6, stackpos = STACKPOS_FIRST_ITEM_ABOVE_GROUNDTILE },
	{ x = 230, y = 562, z = 6, stackpos = STACKPOS_FIRST_ITEM_ABOVE_GROUNDTILE }
}

function removeWalls(item, position)
	doBroadcastMessage("Event is open!")
	addEvent(createWalls, timeToCreate * 1000 * 60)
	for i = 1, table.maxn(walls) do
		doRemoveItem(getThingfromPos(walls[i]).uid)
		doSendMagicEffect(walls[i], CONST_ME_MAGIC_RED)
	end
	return TRUE
end

function createWalls(item, position)
	for i = 1,table.maxn(walls) do
		doCreateItem(1039, 1, walls[i])
		doSendMagicEffect(walls[i], CONST_ME_MAGIC_GREEN)
	end
	return TRUE
end

function onThink(interval, lastExecution)
	doBroadcastMessage("Next event in 3 hours.")
	addEvent(removeWalls, 1000)
	return TRUE
end

local config = {
	timeToCreate = 20 * 60 * 1000
}
local walls = {
	{ x = 229, y = 562, z = 6, stackpos = STACKPOS_FIRST_ITEM_ABOVE_GROUNDTILE },
	{ x = 230, y = 562, z = 6, stackpos = STACKPOS_FIRST_ITEM_ABOVE_GROUNDTILE }
}

local function doRemoveWalls()
	addEvent(doCreateWalls, config.timeToCreate)
	for i = 1, table.maxn(walls) do
		local tmp = getThingFromPos(walls[i])
		if(tmp.itemid > 0) then
			doRemoveItem(tmp.uid)
			doSendMagicEffect(walls[i], CONST_ME_MAGIC_GREEN)
		end
	end
end

local function doCreateWalls()
	for i = 1, table.maxn(walls) do
		doCreateItem(1039, 1, walls[i])
		doSendMagicEffect(walls[i], CONST_ME_MAGIC_RED)
	end
end

function onThink(interval, lastExecution)
	doBroadcastMessage("Event is open!")
	addEvent(doRemoveWalls, 1000)
	return TRUE
end

local config = {
        Wallid = XXXX
	timeToCreate = 20 * 60 * 1000
}
local walls = {
	{ x = 229, y = 562, z = 6, stackpos = STACKPOS_FIRST_ITEM_ABOVE_GROUNDTILE },
	{ x = 230, y = 562, z = 6, stackpos = STACKPOS_FIRST_ITEM_ABOVE_GROUNDTILE }
}

local function doRemoveWalls()
	addEvent(doCreateWalls, config.timeToCreate)
	for i = 1, table.maxn(walls) do
		local tmp = getThingFromPos(walls[i])
		if(tmp.itemid > 0) then
			doRemoveItem(tmp.uid)
			doSendMagicEffect(walls[i], CONST_ME_MAGIC_GREEN)
		end
	end
end

local function doCreateWalls()
	for i = 1, table.maxn(walls) do
		doCreateItem(config.Wallid, 1, walls[i])
		doSendMagicEffect(walls[i], CONST_ME_MAGIC_RED)
	end
end

function onThink(interval, lastExecution)
	doBroadcastMessage("Event is open!")
	addEvent(doRemoveWalls, 1000)
	return TRUE
end

21/06/2009 00:58:54] > Broadcasted message: "Event is open!".

[21/06/2009 00:58:55] Lua Script Error: [GlobalEvent Interface] 
[21/06/2009 00:58:55] in a timer event called from: 
[21/06/2009 00:58:55] data/globalevents/scripts/event.lua:onThink

[21/06/2009 00:58:55] luaDoRemoveItem(). Item not found

local  enterPos = { x=100, y=100, z=7 }
local  createPos = { x=102, y=102, z=7 }
doCreateTeleport(1387, enterPos, createPos)